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Jetpack/kernel/nvidia/drivers/video/tegra/dc/dc.c

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/*
* dc.c: dc driver.
*
* Copyright (C) 2010 Google, Inc.
* Author: Erik Gilling <konkers@android.com>
*
* Copyright (c) 2010-2019, NVIDIA CORPORATION, All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/pm.h>
#include <linux/tegra-pm.h>
#include <linux/pm_runtime.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/ktime.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/backlight.h>
#include <linux/gpio.h>
#include <linux/nvhost.h>
#include <linux/clk/tegra.h>
#include <linux/platform/tegra/emc_bwmgr.h>
#include <uapi/video/tegrafb.h>
#include <drm/drm_fixed.h>
#include <linux/dma-buf.h>
#include <linux/extcon/extcon-disp.h>
#include <linux/extcon.h>
#ifdef CONFIG_SWITCH
#include <linux/switch.h>
#endif
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/tegra_pm_domains.h>
#include <linux/uaccess.h>
#if defined(CONFIG_TRUSTED_LITTLE_KERNEL) || defined(CONFIG_TRUSTY)
#include <linux/ote_protocol.h>
#endif
#include <linux/version.h>
#define CREATE_TRACE_POINTS
#include <trace/events/display.h>
EXPORT_TRACEPOINT_SYMBOL(display_writel);
EXPORT_TRACEPOINT_SYMBOL(display_readl);
#include <linux/nvhost.h>
#include <uapi/linux/nvhost_ioctl.h>
#include <linux/platform/tegra/latency_allowance.h>
#include <linux/platform/tegra/mc.h>
#include <soc/tegra/tegra_bpmp.h>
#include <uapi/video/tegra_dc_ext.h>
#include "dc.h"
#include "dc_reg.h"
#include "dc_config.h"
#include "dc_priv.h"
#include "dc_shared_isr.h"
#include "nvhost_sync.h"
#include "nvhost_syncpt.h" /* Preset and flush vblank_syncpt*/
#include "dpaux.h"
#include "lvds.h"
#include "dc_common.h"
#include "edid.h"
#ifdef CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT
#include "fake_panel.h"
#endif /*CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT*/
/* HACK! This needs to come from DT */
#include "../../../../arch/arm/mach-tegra/iomap.h"
#define TEGRA_CRC_LATCHED_DELAY 34
#define DC_COM_PIN_OUTPUT_POLARITY1_INIT_VAL 0x01000000
#define DC_COM_PIN_OUTPUT_POLARITY3_INIT_VAL 0x0
#define MAX_VRR_V_FRONT_PORCH 0x1000
static struct tegra_dc_hw_data *hw_data;
static struct tegra_dc_hw_data t21x_hw_data;
static struct tegra_dc_hw_data t18x_hw_data;
static struct tegra_dc_hw_data t19x_hw_data;
static const struct of_device_id tegra_display_of_match[] = {
{.compatible = "nvidia,tegra210-dc", .data = &t21x_hw_data },
{.compatible = "nvidia,tegra186-dc", .data = &t18x_hw_data },
{.compatible = "nvidia,tegra194-dc", .data = &t19x_hw_data },
{ },
};
MODULE_DEVICE_TABLE(of, tegra_display_of_match);
/* Used only on T21x*/
static struct of_device_id tegra_disa_pd[] = {
{ .compatible = "nvidia,tegra210-disa-pd", },
{},
};
/* Used only on T21x */
static struct of_device_id tegra_disb_pd[] = {
{ .compatible = "nvidia,tegra210-disb-pd", },
{},
};
static unsigned int display_la_emc_client_id[] = {
TEGRA_BWMGR_CLIENT_DISP1_LA_EMC,
TEGRA_BWMGR_CLIENT_DISP2_LA_EMC
};
struct fb_videomode tegra_dc_vga_mode = {
.refresh = 60,
.xres = 640,
.yres = 480,
.pixclock = KHZ2PICOS(25200),
.hsync_len = 96, /* h_sync_width */
.vsync_len = 2, /* v_sync_width */
.left_margin = 48, /* h_back_porch */
.upper_margin = 33, /* v_back_porch */
.right_margin = 16, /* h_front_porch */
.lower_margin = 10, /* v_front_porch */
.vmode = 0,
.sync = 0,
};
/* needs to be big enough to be index by largest supported out->type */
static struct tegra_dc_mode override_disp_mode[TEGRA_DC_OUT_NULL + 1];
static void _tegra_dc_controller_disable(struct tegra_dc *dc);
static void tegra_dc_disable_irq_ops(struct tegra_dc *dc, bool from_irq);
static int _tegra_dc_config_frame_end_intr(struct tegra_dc *dc, bool enable);
static int tegra_dc_set_out(struct tegra_dc *dc, struct tegra_dc_out *out,
bool initialized);
#ifdef PM
static int tegra_dc_suspend(struct platform_device *ndev, pm_message_t state);
static int tegra_dc_resume(struct platform_device *ndev);
#endif
static struct tegra_dc **tegra_dcs;
/* Used only on Nvdisplay */
static struct tegra_dc_win tegra_dc_windows[DC_N_WINDOWS];
static u64 tegra_dc_get_scanline_timestamp(struct tegra_dc *dc,
const u32 scanline);
static void tegra_dc_collect_latency_data(struct tegra_dc *dc);
static DEFINE_MUTEX(tegra_dc_lock);
/* Lock to serialize extcon switch reporting across heads*/
static DEFINE_MUTEX(tegra_dc_extcon_lock);
/* Lock to serialize dc registration during probe */
static DEFINE_MUTEX(tegra_dc_registration_lock);
static struct device_dma_parameters tegra_dc_dma_parameters = {
.max_segment_size = UINT_MAX,
};
static const struct {
bool h;
bool v;
} can_filter[] = {
/* Window A has no filtering */
{ false, false },
/* Window B has both H and V filtering */
{ true, true },
/* Window C has only H filtering */
{ false, true },
};
static struct tegra_dc_cmu default_cmu = {
/* lut1 maps sRGB to linear space. */
{
0, 1, 2, 4, 5, 6, 7, 9,
10, 11, 12, 14, 15, 16, 18, 20,
21, 23, 25, 27, 29, 31, 33, 35,
37, 40, 42, 45, 48, 50, 53, 56,
59, 62, 66, 69, 72, 76, 79, 83,
87, 91, 95, 99, 103, 107, 112, 116,
121, 126, 131, 136, 141, 146, 151, 156,
162, 168, 173, 179, 185, 191, 197, 204,
210, 216, 223, 230, 237, 244, 251, 258,
265, 273, 280, 288, 296, 304, 312, 320,
329, 337, 346, 354, 363, 372, 381, 390,
400, 409, 419, 428, 438, 448, 458, 469,
479, 490, 500, 511, 522, 533, 544, 555,
567, 578, 590, 602, 614, 626, 639, 651,
664, 676, 689, 702, 715, 728, 742, 755,
769, 783, 797, 811, 825, 840, 854, 869,
884, 899, 914, 929, 945, 960, 976, 992,
1008, 1024, 1041, 1057, 1074, 1091, 1108, 1125,
1142, 1159, 1177, 1195, 1213, 1231, 1249, 1267,
1286, 1304, 1323, 1342, 1361, 1381, 1400, 1420,
1440, 1459, 1480, 1500, 1520, 1541, 1562, 1582,
1603, 1625, 1646, 1668, 1689, 1711, 1733, 1755,
1778, 1800, 1823, 1846, 1869, 1892, 1916, 1939,
1963, 1987, 2011, 2035, 2059, 2084, 2109, 2133,
2159, 2184, 2209, 2235, 2260, 2286, 2312, 2339,
2365, 2392, 2419, 2446, 2473, 2500, 2527, 2555,
2583, 2611, 2639, 2668, 2696, 2725, 2754, 2783,
2812, 2841, 2871, 2901, 2931, 2961, 2991, 3022,
3052, 3083, 3114, 3146, 3177, 3209, 3240, 3272,
3304, 3337, 3369, 3402, 3435, 3468, 3501, 3535,
3568, 3602, 3636, 3670, 3705, 3739, 3774, 3809,
3844, 3879, 3915, 3950, 3986, 4022, 4059, 4095,
},
/* csc */
{
0x100, 0x0, 0x0,
0x0, 0x100, 0x0,
0x0, 0x0, 0x100,
},
/* lut2 maps linear space to sRGB*/
{
0, 1, 2, 2, 3, 4, 5, 6,
6, 7, 8, 9, 10, 10, 11, 12,
13, 13, 14, 15, 15, 16, 16, 17,
18, 18, 19, 19, 20, 20, 21, 21,
22, 22, 23, 23, 23, 24, 24, 25,
25, 25, 26, 26, 27, 27, 27, 28,
28, 29, 29, 29, 30, 30, 30, 31,
31, 31, 32, 32, 32, 33, 33, 33,
34, 34, 34, 34, 35, 35, 35, 36,
36, 36, 37, 37, 37, 37, 38, 38,
38, 38, 39, 39, 39, 40, 40, 40,
40, 41, 41, 41, 41, 42, 42, 42,
42, 43, 43, 43, 43, 43, 44, 44,
44, 44, 45, 45, 45, 45, 46, 46,
46, 46, 46, 47, 47, 47, 47, 48,
48, 48, 48, 48, 49, 49, 49, 49,
49, 50, 50, 50, 50, 50, 51, 51,
51, 51, 51, 52, 52, 52, 52, 52,
53, 53, 53, 53, 53, 54, 54, 54,
54, 54, 55, 55, 55, 55, 55, 55,
56, 56, 56, 56, 56, 57, 57, 57,
57, 57, 57, 58, 58, 58, 58, 58,
58, 59, 59, 59, 59, 59, 59, 60,
60, 60, 60, 60, 60, 61, 61, 61,
61, 61, 61, 62, 62, 62, 62, 62,
62, 63, 63, 63, 63, 63, 63, 64,
64, 64, 64, 64, 64, 64, 65, 65,
65, 65, 65, 65, 66, 66, 66, 66,
66, 66, 66, 67, 67, 67, 67, 67,
67, 67, 68, 68, 68, 68, 68, 68,
68, 69, 69, 69, 69, 69, 69, 69,
70, 70, 70, 70, 70, 70, 70, 71,
71, 71, 71, 71, 71, 71, 72, 72,
72, 72, 72, 72, 72, 72, 73, 73,
73, 73, 73, 73, 73, 74, 74, 74,
74, 74, 74, 74, 74, 75, 75, 75,
75, 75, 75, 75, 75, 76, 76, 76,
76, 76, 76, 76, 77, 77, 77, 77,
77, 77, 77, 77, 78, 78, 78, 78,
78, 78, 78, 78, 78, 79, 79, 79,
79, 79, 79, 79, 79, 80, 80, 80,
80, 80, 80, 80, 80, 81, 81, 81,
81, 81, 81, 81, 81, 81, 82, 82,
82, 82, 82, 82, 82, 82, 83, 83,
83, 83, 83, 83, 83, 83, 83, 84,
84, 84, 84, 84, 84, 84, 84, 84,
85, 85, 85, 85, 85, 85, 85, 85,
85, 86, 86, 86, 86, 86, 86, 86,
86, 86, 87, 87, 87, 87, 87, 87,
87, 87, 87, 88, 88, 88, 88, 88,
88, 88, 88, 88, 88, 89, 89, 89,
89, 89, 89, 89, 89, 89, 90, 90,
90, 90, 90, 90, 90, 90, 90, 90,
91, 91, 91, 91, 91, 91, 91, 91,
91, 91, 92, 92, 92, 92, 92, 92,
92, 92, 92, 92, 93, 93, 93, 93,
93, 93, 93, 93, 93, 93, 94, 94,
94, 94, 94, 94, 94, 94, 94, 94,
95, 95, 95, 95, 95, 95, 95, 95,
95, 95, 96, 96, 96, 96, 96, 96,
96, 96, 96, 96, 96, 97, 97, 97,
97, 97, 97, 97, 97, 97, 97, 98,
98, 98, 98, 98, 98, 98, 98, 98,
98, 98, 99, 99, 99, 99, 99, 99,
99, 100, 101, 101, 102, 103, 103, 104,
105, 105, 106, 107, 107, 108, 109, 109,
110, 111, 111, 112, 113, 113, 114, 115,
115, 116, 116, 117, 118, 118, 119, 119,
120, 120, 121, 122, 122, 123, 123, 124,
124, 125, 126, 126, 127, 127, 128, 128,
129, 129, 130, 130, 131, 131, 132, 132,
133, 133, 134, 134, 135, 135, 136, 136,
137, 137, 138, 138, 139, 139, 140, 140,
141, 141, 142, 142, 143, 143, 144, 144,
145, 145, 145, 146, 146, 147, 147, 148,
148, 149, 149, 150, 150, 150, 151, 151,
152, 152, 153, 153, 153, 154, 154, 155,
155, 156, 156, 156, 157, 157, 158, 158,
158, 159, 159, 160, 160, 160, 161, 161,
162, 162, 162, 163, 163, 164, 164, 164,
165, 165, 166, 166, 166, 167, 167, 167,
168, 168, 169, 169, 169, 170, 170, 170,
171, 171, 172, 172, 172, 173, 173, 173,
174, 174, 174, 175, 175, 176, 176, 176,
177, 177, 177, 178, 178, 178, 179, 179,
179, 180, 180, 180, 181, 181, 182, 182,
182, 183, 183, 183, 184, 184, 184, 185,
185, 185, 186, 186, 186, 187, 187, 187,
188, 188, 188, 189, 189, 189, 189, 190,
190, 190, 191, 191, 191, 192, 192, 192,
193, 193, 193, 194, 194, 194, 195, 195,
195, 196, 196, 196, 196, 197, 197, 197,
198, 198, 198, 199, 199, 199, 200, 200,
200, 200, 201, 201, 201, 202, 202, 202,
202, 203, 203, 203, 204, 204, 204, 205,
205, 205, 205, 206, 206, 206, 207, 207,
207, 207, 208, 208, 208, 209, 209, 209,
209, 210, 210, 210, 211, 211, 211, 211,
212, 212, 212, 213, 213, 213, 213, 214,
214, 214, 214, 215, 215, 215, 216, 216,
216, 216, 217, 217, 217, 217, 218, 218,
218, 219, 219, 219, 219, 220, 220, 220,
220, 221, 221, 221, 221, 222, 222, 222,
223, 223, 223, 223, 224, 224, 224, 224,
225, 225, 225, 225, 226, 226, 226, 226,
227, 227, 227, 227, 228, 228, 228, 228,
229, 229, 229, 229, 230, 230, 230, 230,
231, 231, 231, 231, 232, 232, 232, 232,
233, 233, 233, 233, 234, 234, 234, 234,
235, 235, 235, 235, 236, 236, 236, 236,
237, 237, 237, 237, 238, 238, 238, 238,
239, 239, 239, 239, 240, 240, 240, 240,
240, 241, 241, 241, 241, 242, 242, 242,
242, 243, 243, 243, 243, 244, 244, 244,
244, 244, 245, 245, 245, 245, 246, 246,
246, 246, 247, 247, 247, 247, 247, 248,
248, 248, 248, 249, 249, 249, 249, 249,
250, 250, 250, 250, 251, 251, 251, 251,
251, 252, 252, 252, 252, 253, 253, 253,
253, 253, 254, 254, 254, 254, 255, 255,
},
};
static struct tegra_dc_cmu default_limited_cmu = {
/* lut1 maps sRGB to linear space. */
{
0, 1, 2, 4, 5, 6, 7, 9,
10, 11, 12, 14, 15, 16, 18, 20,
21, 23, 25, 27, 29, 31, 33, 35,
37, 40, 42, 45, 48, 50, 53, 56,
59, 62, 66, 69, 72, 76, 79, 83,
87, 91, 95, 99, 103, 107, 112, 116,
121, 126, 131, 136, 141, 146, 151, 156,
162, 168, 173, 179, 185, 191, 197, 204,
210, 216, 223, 230, 237, 244, 251, 258,
265, 273, 280, 288, 296, 304, 312, 320,
329, 337, 346, 354, 363, 372, 381, 390,
400, 409, 419, 428, 438, 448, 458, 469,
479, 490, 500, 511, 522, 533, 544, 555,
567, 578, 590, 602, 614, 626, 639, 651,
664, 676, 689, 702, 715, 728, 742, 755,
769, 783, 797, 811, 825, 840, 854, 869,
884, 899, 914, 929, 945, 960, 976, 992,
1008, 1024, 1041, 1057, 1074, 1091, 1108, 1125,
1142, 1159, 1177, 1195, 1213, 1231, 1249, 1267,
1286, 1304, 1323, 1342, 1361, 1381, 1400, 1420,
1440, 1459, 1480, 1500, 1520, 1541, 1562, 1582,
1603, 1625, 1646, 1668, 1689, 1711, 1733, 1755,
1778, 1800, 1823, 1846, 1869, 1892, 1916, 1939,
1963, 1987, 2011, 2035, 2059, 2084, 2109, 2133,
2159, 2184, 2209, 2235, 2260, 2286, 2312, 2339,
2365, 2392, 2419, 2446, 2473, 2500, 2527, 2555,
2583, 2611, 2639, 2668, 2696, 2725, 2754, 2783,
2812, 2841, 2871, 2901, 2931, 2961, 2991, 3022,
3052, 3083, 3114, 3146, 3177, 3209, 3240, 3272,
3304, 3337, 3369, 3402, 3435, 3468, 3501, 3535,
3568, 3602, 3636, 3670, 3705, 3739, 3774, 3809,
3844, 3879, 3915, 3950, 3986, 4022, 4059, 4095,
},
/* csc */
{
0x100, 0x000, 0x000,
0x000, 0x100, 0x000,
0x000, 0x000, 0x100,
},
/*
* lut2 maps linear space back to sRGB, where
* the output range is [16...235] (limited).
*/
{
16, 17, 18, 18, 19, 19, 20, 21,
21, 22, 23, 24, 25, 25, 25, 26,
27, 27, 28, 28, 29, 30, 30, 31,
31, 31, 31, 32, 32, 33, 33, 34,
34, 35, 35, 36, 36, 37, 37, 37,
37, 37, 38, 38, 38, 39, 39, 39,
40, 40, 41, 41, 41, 42, 42, 42,
43, 43, 43, 43, 43, 43, 44, 44,
44, 44, 45, 45, 45, 46, 46, 46,
47, 47, 47, 47, 48, 48, 48, 49,
49, 49, 49, 49, 49, 49, 49, 50,
50, 50, 50, 51, 51, 51, 51, 52,
52, 52, 52, 53, 53, 53, 53, 54,
54, 54, 54, 55, 55, 55, 55, 55,
56, 56, 56, 56, 56, 56, 56, 56,
56, 57, 57, 57, 57, 57, 58, 58,
58, 58, 58, 59, 59, 59, 59, 59,
60, 60, 60, 60, 60, 61, 61, 61,
61, 61, 62, 62, 62, 62, 62, 62,
62, 62, 62, 62, 63, 63, 63, 63,
63, 63, 64, 64, 64, 64, 64, 64,
65, 65, 65, 65, 65, 66, 66, 66,
66, 66, 66, 67, 67, 67, 67, 67,
67, 68, 68, 68, 68, 68, 68, 68,
68, 68, 68, 68, 68, 69, 69, 69,
69, 69, 69, 69, 70, 70, 70, 70,
70, 70, 71, 71, 71, 71, 71, 71,
72, 72, 72, 72, 72, 72, 72, 73,
73, 73, 73, 73, 73, 73, 74, 74,
74, 74, 74, 74, 74, 74, 74, 74,
74, 74, 74, 74, 75, 75, 75, 75,
75, 75, 75, 76, 76, 76, 76, 76,
76, 76, 77, 77, 77, 77, 77, 77,
77, 78, 78, 78, 78, 78, 78, 78,
78, 79, 79, 79, 79, 79, 79, 79,
80, 80, 80, 80, 80, 80, 80, 80,
80, 80, 80, 80, 80, 80, 80, 80,
81, 81, 81, 81, 81, 81, 81, 81,
82, 82, 82, 82, 82, 82, 82, 82,
83, 83, 83, 83, 83, 83, 83, 83,
84, 84, 84, 84, 84, 84, 84, 84,
84, 85, 85, 85, 85, 85, 85, 85,
85, 86, 86, 86, 86, 86, 86, 86,
86, 86, 86, 86, 86, 86, 86, 86,
86, 86, 87, 87, 87, 87, 87, 87,
87, 87, 87, 88, 88, 88, 88, 88,
88, 88, 88, 88, 89, 89, 89, 89,
89, 89, 89, 89, 89, 90, 90, 90,
90, 90, 90, 90, 90, 90, 91, 91,
91, 91, 91, 91, 91, 91, 91, 91,
92, 92, 92, 92, 92, 92, 92, 92,
92, 92, 92, 92, 92, 92, 92, 92,
92, 92, 92, 93, 93, 93, 93, 93,
93, 93, 93, 93, 94, 94, 94, 94,
94, 94, 94, 94, 94, 94, 95, 95,
95, 95, 95, 95, 95, 95, 95, 95,
96, 96, 96, 96, 96, 96, 96, 96,
96, 96, 97, 97, 97, 97, 97, 97,
97, 97, 97, 97, 97, 98, 98, 98,
98, 98, 98, 98, 98, 98, 98, 98,
98, 98, 98, 98, 98, 98, 98, 98,
98, 98, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 100, 100, 100, 100,
100, 100, 100, 100, 100, 100, 100, 101,
101, 102, 103, 103, 104, 104, 105, 105,
106, 107, 107, 108, 109, 109, 110, 110,
110, 111, 111, 112, 113, 113, 114, 115,
115, 116, 116, 116, 117, 117, 118, 118,
119, 120, 120, 121, 121, 122, 122, 122,
122, 123, 124, 124, 125, 125, 126, 126,
127, 127, 128, 128, 129, 129, 129, 129,
130, 130, 131, 131, 132, 132, 133, 133,
134, 134, 135, 135, 135, 135, 136, 136,
137, 137, 138, 138, 139, 139, 140, 140,
141, 141, 141, 141, 141, 142, 142, 143,
143, 144, 144, 144, 145, 145, 146, 146,
147, 147, 147, 147, 147, 148, 148, 149,
149, 149, 150, 150, 151, 151, 151, 152,
152, 153, 153, 153, 153, 153, 154, 154,
154, 155, 155, 156, 156, 156, 157, 157,
158, 158, 158, 159, 159, 159, 159, 159,
160, 160, 160, 161, 161, 162, 162, 162,
163, 163, 163, 164, 164, 165, 165, 165,
165, 165, 165, 166, 166, 166, 167, 167,
167, 168, 168, 169, 169, 169, 170, 170,
170, 171, 171, 171, 171, 171, 171, 172,
172, 172, 173, 173, 173, 174, 174, 174,
175, 175, 175, 176, 176, 176, 177, 177,
177, 177, 177, 177, 178, 178, 178, 179,
179, 179, 180, 180, 180, 181, 181, 181,
181, 182, 182, 182, 183, 183, 183, 183,
183, 183, 184, 184, 184, 185, 185, 185,
185, 186, 186, 186, 187, 187, 187, 188,
188, 188, 188, 189, 189, 189, 189, 189,
189, 190, 190, 190, 190, 191, 191, 191,
192, 192, 192, 193, 193, 193, 193, 194,
194, 194, 195, 195, 195, 195, 195, 195,
195, 196, 196, 196, 196, 197, 197, 197,
197, 198, 198, 198, 199, 199, 199, 199,
200, 200, 200, 201, 201, 201, 201, 202,
202, 202, 202, 202, 202, 202, 203, 203,
203, 203, 204, 204, 204, 204, 205, 205,
205, 205, 206, 206, 206, 207, 207, 207,
207, 208, 208, 208, 208, 208, 208, 208,
208, 209, 209, 209, 209, 210, 210, 210,
210, 211, 211, 211, 211, 212, 212, 212,
212, 213, 213, 213, 213, 214, 214, 214,
214, 214, 214, 214, 214, 215, 215, 215,
215, 216, 216, 216, 216, 217, 217, 217,
217, 218, 218, 218, 218, 219, 219, 219,
219, 220, 220, 220, 220, 220, 220, 220,
220, 221, 221, 221, 221, 221, 222, 222,
222, 222, 223, 223, 223, 223, 224, 224,
224, 224, 225, 225, 225, 225, 225, 226,
226, 226, 226, 226, 226, 226, 226, 227,
227, 227, 227, 227, 228, 228, 228, 228,
229, 229, 229, 229, 230, 230, 230, 230,
230, 231, 231, 231, 231, 232, 232, 232,
232, 232, 232, 232, 232, 232, 233, 233,
233, 233, 233, 234, 234, 234, 234, 235
},
};
static struct tegra_dc_nvdisp_cmu default_nvdisp_cmu = {
{},
};
static struct tegra_dc_nvdisp_cmu default_limited_nvdisp_cmu = {
{},
};
#define DSC_MAX_RC_BUF_THRESH_REGS 4
static int dsc_rc_buf_thresh_regs[DSC_MAX_RC_BUF_THRESH_REGS] = {
DC_COM_DSC_RC_BUF_THRESH_0,
DC_COM_DSC_RC_BUF_THRESH_1,
DC_COM_DSC_RC_BUF_THRESH_2,
DC_COM_DSC_RC_BUF_THRESH_3,
};
/*
* Always set the first two values to 0. This is to ensure that RC threshold
* values are programmed in the correct registers.
*/
static int dsc_rc_buf_thresh[] = {
0, 0, 14, 28, 42, 56, 70, 84, 98, 105, 112, 119, 121,
123, 125, 126,
};
#define DSC_MAX_RC_RANGE_CFG_REGS 8
static int dsc_rc_range_config[DSC_MAX_RC_RANGE_CFG_REGS] = {
DC_COM_DSC_RC_RANGE_CFG_0,
DC_COM_DSC_RC_RANGE_CFG_1,
DC_COM_DSC_RC_RANGE_CFG_2,
DC_COM_DSC_RC_RANGE_CFG_3,
DC_COM_DSC_RC_RANGE_CFG_4,
DC_COM_DSC_RC_RANGE_CFG_5,
DC_COM_DSC_RC_RANGE_CFG_6,
DC_COM_DSC_RC_RANGE_CFG_7,
};
static int dsc_rc_ranges_8bpp_8bpc[16][3] = {
{0, 4, 2},
{0, 4, 0},
{1, 5, 0},
{1, 6, -2},
{3, 7, -4},
{3, 7, -6},
{3, 7, -8},
{3, 8, -8},
{3, 9, -8},
{3, 10, -10},
{5, 11, -10},
{5, 12, -12},
{5, 13, -12},
{7, 13, -12},
{13, 15, -12},
{0, 0, 0},
};
static void tegra_dc_t21x_activate_general_channel(struct tegra_dc *dc)
{
tegra_dc_writel(dc, GENERAL_UPDATE, DC_CMD_STATE_CONTROL);
tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); /* flush */
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); /* flush */
}
void tegra_dc_activate_general_channel(struct tegra_dc *dc)
{
if (tegra_dc_is_t21x())
tegra_dc_t21x_activate_general_channel(dc);
else
tegra_nvdisp_activate_general_channel(dc);
}
unsigned long tegra_dc_readl_exported(struct tegra_dc *dc, unsigned long reg)
{
return tegra_dc_readl(dc, reg);
}
EXPORT_SYMBOL(tegra_dc_readl_exported);
void tegra_dc_writel_exported(struct tegra_dc *dc,
unsigned long val, unsigned long reg)
{
tegra_dc_writel(dc, val, reg);
}
EXPORT_SYMBOL(tegra_dc_writel_exported);
void tegra_dc_clk_enable(struct tegra_dc *dc)
{
tegra_disp_clk_prepare_enable(dc->clk);
#ifdef CONFIG_TEGRA_CORE_DVFS
tegra_dvfs_set_rate(dc->clk, dc->mode.pclk);
#endif
}
void tegra_dc_clk_disable(struct tegra_dc *dc)
{
tegra_disp_clk_disable_unprepare(dc->clk);
#ifdef CONFIG_TEGRA_CORE_DVFS
tegra_dvfs_set_rate(dc->clk, 0);
#endif
}
void tegra_dc_get(struct tegra_dc *dc)
{
int enable_count = atomic_inc_return(&dc->enable_count);
BUG_ON(enable_count < 1);
if (enable_count == 1) {
tegra_dc_io_start(dc);
/* extra reference to dc clk */
tegra_disp_clk_prepare_enable(dc->clk);
}
}
EXPORT_SYMBOL(tegra_dc_get);
void tegra_dc_put(struct tegra_dc *dc)
{
if (WARN_ONCE(atomic_read(&dc->enable_count) == 0,
"unbalanced clock calls"))
return;
if (atomic_dec_return(&dc->enable_count) == 0) {
/* balance extra dc clk reference */
tegra_disp_clk_disable_unprepare(dc->clk);
tegra_dc_io_end(dc);
}
}
EXPORT_SYMBOL(tegra_dc_put);
unsigned tegra_dc_out_flags_from_dev(struct device *dev)
{
struct platform_device *ndev = NULL;
struct tegra_dc *dc = NULL;
if (dev)
ndev = to_platform_device(dev);
if (ndev)
dc = platform_get_drvdata(ndev);
if (dc)
return dc->out->flags;
else
return 0;
}
EXPORT_SYMBOL(tegra_dc_out_flags_from_dev);
inline bool tegra_dc_in_cmode(struct tegra_dc *dc)
{
u32 nc_mode_flags = (TEGRA_DC_OUT_ONE_SHOT_MODE |
TEGRA_DC_OUT_N_SHOT_MODE |
TEGRA_DC_OUT_ONE_SHOT_LP_MODE);
return !(dc->out->flags & nc_mode_flags);
}
EXPORT_SYMBOL(tegra_dc_in_cmode);
bool tegra_dc_initialized(struct device *dev)
{
struct platform_device *ndev = NULL;
struct tegra_dc *dc = NULL;
if (dev)
ndev = to_platform_device(dev);
if (ndev)
dc = platform_get_drvdata(ndev);
if (dc)
return dc->initialized;
else
return false;
}
EXPORT_SYMBOL(tegra_dc_initialized);
void tegra_dc_hold_dc_out(struct tegra_dc *dc)
{
if (1 == atomic_inc_return(&dc->holding)) {
tegra_dc_get(dc);
if (dc->out_ops && dc->out_ops->hold)
dc->out_ops->hold(dc);
}
}
void tegra_dc_release_dc_out(struct tegra_dc *dc)
{
if (0 == atomic_dec_return(&dc->holding)) {
if (dc->out_ops && dc->out_ops->release)
dc->out_ops->release(dc);
tegra_dc_put(dc);
}
}
bool tegra_dc_hotplug_supported(struct tegra_dc *dc)
{
/* For HDMI|DP, hotplug always supported
* For eDP, hotplug is never supported
* For fake DP, SW hotplug is supported
* Else GPIO# determines if hotplug supported
*/
if (dc->out->type == TEGRA_DC_OUT_HDMI)
return true;
else if (dc->out->type == TEGRA_DC_OUT_DP ||
dc->out->type == TEGRA_DC_OUT_FAKE_DP ||
dc->out->type == TEGRA_DC_OUT_DSI)
return tegra_dc_is_ext_panel(dc);
else
return (dc->out->hotplug_gpio > 0 ? true : false);
}
#define DUMP_REG(a) do { \
snprintf(buff, sizeof(buff), "%-32s\t%03x\t%08lx\n", \
#a, a, tegra_dc_readl(dc, a)); \
print(data, buff); \
} while (0)
void tegra_dc_reg_dump(struct tegra_dc *dc, void *data,
void (* print)(void *data, const char *str))
{
int i;
char buff[256];
const char winname[] = "ABCDHT";
/* for above, see also: DC_CMD_DISPLAY_WINDOW_HEADER and DC_N_WINDOWS */
unsigned long cmd_state;
/* If gated, quietly return. */
if (!tegra_dc_is_powered(dc))
return;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
cmd_state = tegra_dc_readl(dc, DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, WRITE_MUX_ACTIVE | READ_MUX_ACTIVE,
DC_CMD_STATE_ACCESS);
DUMP_REG(DC_CMD_DISPLAY_COMMAND_OPTION0);
DUMP_REG(DC_CMD_DISPLAY_COMMAND);
DUMP_REG(DC_CMD_SIGNAL_RAISE);
DUMP_REG(DC_CMD_INT_STATUS);
DUMP_REG(DC_CMD_INT_MASK);
DUMP_REG(DC_CMD_INT_ENABLE);
DUMP_REG(DC_CMD_INT_TYPE);
DUMP_REG(DC_CMD_INT_POLARITY);
DUMP_REG(DC_CMD_SIGNAL_RAISE1);
DUMP_REG(DC_CMD_SIGNAL_RAISE2);
DUMP_REG(DC_CMD_SIGNAL_RAISE3);
DUMP_REG(DC_CMD_STATE_ACCESS);
DUMP_REG(DC_CMD_STATE_CONTROL);
DUMP_REG(DC_CMD_DISPLAY_WINDOW_HEADER);
DUMP_REG(DC_CMD_REG_ACT_CONTROL);
DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS0);
DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS1);
DUMP_REG(DC_DISP_DISP_WIN_OPTIONS);
DUMP_REG(DC_DISP_MEM_HIGH_PRIORITY);
DUMP_REG(DC_DISP_MEM_HIGH_PRIORITY_TIMER);
DUMP_REG(DC_DISP_DISP_TIMING_OPTIONS);
DUMP_REG(DC_DISP_REF_TO_SYNC);
DUMP_REG(DC_DISP_SYNC_WIDTH);
DUMP_REG(DC_DISP_BACK_PORCH);
DUMP_REG(DC_DISP_DISP_ACTIVE);
DUMP_REG(DC_DISP_FRONT_PORCH);
DUMP_REG(DC_DISP_H_PULSE0_CONTROL);
DUMP_REG(DC_DISP_H_PULSE0_POSITION_A);
DUMP_REG(DC_DISP_H_PULSE0_POSITION_B);
DUMP_REG(DC_DISP_H_PULSE0_POSITION_C);
DUMP_REG(DC_DISP_H_PULSE0_POSITION_D);
DUMP_REG(DC_DISP_H_PULSE1_CONTROL);
DUMP_REG(DC_DISP_H_PULSE1_POSITION_A);
DUMP_REG(DC_DISP_H_PULSE1_POSITION_B);
DUMP_REG(DC_DISP_H_PULSE1_POSITION_C);
DUMP_REG(DC_DISP_H_PULSE1_POSITION_D);
DUMP_REG(DC_DISP_H_PULSE2_CONTROL);
DUMP_REG(DC_DISP_H_PULSE2_POSITION_A);
DUMP_REG(DC_DISP_H_PULSE2_POSITION_B);
DUMP_REG(DC_DISP_H_PULSE2_POSITION_C);
DUMP_REG(DC_DISP_H_PULSE2_POSITION_D);
DUMP_REG(DC_DISP_V_PULSE0_CONTROL);
DUMP_REG(DC_DISP_V_PULSE0_POSITION_A);
DUMP_REG(DC_DISP_V_PULSE0_POSITION_B);
DUMP_REG(DC_DISP_V_PULSE0_POSITION_C);
DUMP_REG(DC_DISP_V_PULSE1_CONTROL);
DUMP_REG(DC_DISP_V_PULSE1_POSITION_A);
DUMP_REG(DC_DISP_V_PULSE1_POSITION_B);
DUMP_REG(DC_DISP_V_PULSE1_POSITION_C);
DUMP_REG(DC_DISP_V_PULSE2_CONTROL);
DUMP_REG(DC_DISP_V_PULSE2_POSITION_A);
DUMP_REG(DC_DISP_V_PULSE3_CONTROL);
DUMP_REG(DC_DISP_V_PULSE3_POSITION_A);
DUMP_REG(DC_DISP_M0_CONTROL);
DUMP_REG(DC_DISP_M1_CONTROL);
DUMP_REG(DC_DISP_DI_CONTROL);
DUMP_REG(DC_DISP_PP_CONTROL);
DUMP_REG(DC_DISP_PP_SELECT_A);
DUMP_REG(DC_DISP_PP_SELECT_B);
DUMP_REG(DC_DISP_PP_SELECT_C);
DUMP_REG(DC_DISP_PP_SELECT_D);
DUMP_REG(DC_DISP_DISP_CLOCK_CONTROL);
DUMP_REG(DC_DISP_DISP_INTERFACE_CONTROL);
DUMP_REG(DC_DISP_DISP_COLOR_CONTROL);
DUMP_REG(DC_DISP_SHIFT_CLOCK_OPTIONS);
DUMP_REG(DC_DISP_DATA_ENABLE_OPTIONS);
DUMP_REG(DC_DISP_SERIAL_INTERFACE_OPTIONS);
DUMP_REG(DC_DISP_LCD_SPI_OPTIONS);
DUMP_REG(DC_DISP_COLOR_KEY0_LOWER);
DUMP_REG(DC_DISP_COLOR_KEY0_UPPER);
DUMP_REG(DC_DISP_COLOR_KEY1_LOWER);
DUMP_REG(DC_DISP_COLOR_KEY1_UPPER);
DUMP_REG(DC_DISP_CURSOR_FOREGROUND);
DUMP_REG(DC_DISP_CURSOR_BACKGROUND);
DUMP_REG(DC_DISP_CURSOR_START_ADDR);
DUMP_REG(DC_DISP_CURSOR_START_ADDR_NS);
if (tegra_dc_is_t21x()) {
DUMP_REG(DC_DISP_CURSOR_START_ADDR_HI);
DUMP_REG(DC_DISP_CURSOR_START_ADDR_HI_NS);
}
DUMP_REG(DC_DISP_CURSOR_POSITION);
DUMP_REG(DC_DISP_CURSOR_POSITION_NS);
DUMP_REG(DC_DISP_INIT_SEQ_CONTROL);
DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_A);
DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_B);
DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_C);
DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_D);
DUMP_REG(DC_DISP_DC_MCCIF_FIFOCTRL);
DUMP_REG(DC_DISP_MCCIF_DISPLAY0A_HYST);
DUMP_REG(DC_DISP_MCCIF_DISPLAY0B_HYST);
DUMP_REG(DC_DISP_MCCIF_DISPLAY0C_HYST);
DUMP_REG(DC_DISP_DAC_CRT_CTRL);
DUMP_REG(DC_DISP_DISP_MISC_CONTROL);
DUMP_REG(DC_DISP_INTERLACE_CONTROL);
DUMP_REG(DC_DISP_INTERLACE_FIELD2_REF_TO_SYNC);
DUMP_REG(DC_DISP_INTERLACE_FIELD2_SYNC_WIDTH);
DUMP_REG(DC_DISP_INTERLACE_FIELD2_BACK_PORCH);
DUMP_REG(DC_DISP_INTERLACE_FIELD2_FRONT_PORCH);
DUMP_REG(DC_DISP_INTERLACE_FIELD2_DISP_ACTIVE);
DUMP_REG(DC_CMD_DISPLAY_POWER_CONTROL);
DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE2);
DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY2);
DUMP_REG(DC_COM_PIN_OUTPUT_DATA2);
DUMP_REG(DC_COM_PIN_INPUT_ENABLE2);
DUMP_REG(DC_COM_PIN_OUTPUT_SELECT5);
DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS0);
DUMP_REG(DC_DISP_M1_CONTROL);
DUMP_REG(DC_COM_PM1_CONTROL);
DUMP_REG(DC_COM_PM1_DUTY_CYCLE);
DUMP_REG(DC_DISP_SD_CONTROL);
if (tegra_dc_is_t21x()) {
DUMP_REG(DC_COM_CMU_CSC_KRR);
DUMP_REG(DC_COM_CMU_CSC_KGR);
DUMP_REG(DC_COM_CMU_CSC_KBR);
DUMP_REG(DC_COM_CMU_CSC_KRG);
DUMP_REG(DC_COM_CMU_CSC_KGG);
DUMP_REG(DC_COM_CMU_CSC_KBG);
DUMP_REG(DC_COM_CMU_CSC_KRB);
DUMP_REG(DC_COM_CMU_CSC_KGB);
DUMP_REG(DC_COM_CMU_CSC_KBB);
}
for_each_set_bit(i, &dc->valid_windows,
tegra_dc_get_numof_dispwindows()) {
print(data, "\n");
snprintf(buff, sizeof(buff), "WINDOW %c:\n", winname[i]);
print(data, buff);
tegra_dc_writel(dc, WINDOW_A_SELECT << i,
DC_CMD_DISPLAY_WINDOW_HEADER);
DUMP_REG(DC_CMD_DISPLAY_WINDOW_HEADER);
DUMP_REG(DC_WIN_WIN_OPTIONS);
DUMP_REG(DC_WIN_BYTE_SWAP);
DUMP_REG(DC_WIN_BUFFER_CONTROL);
DUMP_REG(DC_WIN_COLOR_DEPTH);
DUMP_REG(DC_WIN_POSITION);
DUMP_REG(DC_WIN_SIZE);
DUMP_REG(DC_WIN_PRESCALED_SIZE);
DUMP_REG(DC_WIN_H_INITIAL_DDA);
DUMP_REG(DC_WIN_V_INITIAL_DDA);
DUMP_REG(DC_WIN_DDA_INCREMENT);
DUMP_REG(DC_WIN_LINE_STRIDE);
DUMP_REG(DC_WIN_BLEND_NOKEY);
DUMP_REG(DC_WIN_BLEND_1WIN);
DUMP_REG(DC_WIN_BLEND_2WIN_X);
DUMP_REG(DC_WIN_BLEND_2WIN_Y);
DUMP_REG(DC_WIN_BLEND_3WIN_XY);
DUMP_REG(DC_WIN_GLOBAL_ALPHA);
DUMP_REG(DC_WINBUF_BLEND_LAYER_CONTROL);
DUMP_REG(DC_WINBUF_START_ADDR);
DUMP_REG(DC_WINBUF_START_ADDR_U);
DUMP_REG(DC_WINBUF_START_ADDR_V);
DUMP_REG(DC_WINBUF_ADDR_H_OFFSET);
DUMP_REG(DC_WINBUF_ADDR_V_OFFSET);
DUMP_REG(DC_WINBUF_START_ADDR_HI);
DUMP_REG(DC_WINBUF_START_ADDR_HI_U);
DUMP_REG(DC_WINBUF_START_ADDR_HI_V);
DUMP_REG(DC_WINBUF_START_ADDR_FIELD2);
DUMP_REG(DC_WINBUF_START_ADDR_FIELD2_U);
DUMP_REG(DC_WINBUF_START_ADDR_FIELD2_V);
DUMP_REG(DC_WINBUF_START_ADDR_FIELD2_HI);
DUMP_REG(DC_WINBUF_START_ADDR_FIELD2_HI_U);
DUMP_REG(DC_WINBUF_START_ADDR_FIELD2_HI_V);
DUMP_REG(DC_WINBUF_ADDR_H_OFFSET_FIELD2);
DUMP_REG(DC_WINBUF_ADDR_V_OFFSET_FIELD2);
DUMP_REG(DC_WINBUF_UFLOW_STATUS);
DUMP_REG(DC_WIN_CSC_YOF);
DUMP_REG(DC_WIN_CSC_KYRGB);
DUMP_REG(DC_WIN_CSC_KUR);
DUMP_REG(DC_WIN_CSC_KVR);
DUMP_REG(DC_WIN_CSC_KUG);
DUMP_REG(DC_WIN_CSC_KVG);
DUMP_REG(DC_WIN_CSC_KUB);
DUMP_REG(DC_WIN_CSC_KVB);
if (tegra_dc_is_t21x()) {
DUMP_REG(DC_WINBUF_CDE_CONTROL);
DUMP_REG(DC_WINBUF_CDE_COMPTAG_BASE_0);
DUMP_REG(DC_WINBUF_CDE_COMPTAG_BASEHI_0);
DUMP_REG(DC_WINBUF_CDE_ZBC_COLOR_0);
DUMP_REG(DC_WINBUF_CDE_SURFACE_OFFSET_0);
DUMP_REG(DC_WINBUF_CDE_CTB_ENTRY_0);
DUMP_REG(DC_WINBUF_CDE_CG_SW_OVR);
DUMP_REG(DC_WINBUF_CDE_PM_CONTROL);
DUMP_REG(DC_WINBUF_CDE_PM_COUNTER);
}
}
tegra_dc_writel(dc, cmd_state, DC_CMD_STATE_ACCESS);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
#undef DUMP_REG
#ifdef DEBUG
static void dump_regs_print(void *data, const char *str)
{
struct tegra_dc *dc = data;
dev_dbg(&dc->ndev->dev, "%s", str);
}
void dump_regs(struct tegra_dc *dc)
{
reg_dump(dc, dc, dump_regs_print);
}
#else /* !DEBUG */
void dump_regs(struct tegra_dc *dc) {}
#endif /* DEBUG */
#ifdef CONFIG_DEBUG_FS
static int dbg_timestamp_show(struct seq_file *s, void *unused)
{
u32 tmp;
u64 timestamp;
u32 frame_cnt;
struct tegra_dc *dc;
dc = s->private;
do {
tmp = (u32)(tegra_dc_readl(dc, DC_COM_RG_DPCA) >> 16);
timestamp = tegra_dc_get_vsync_timestamp(dc);
frame_cnt = tegra_dc_get_frame_cnt(dc);
} while (tmp != frame_cnt);
seq_printf(s, "vsync_timestamp : %llu\n"
"frame_no : %u\n", timestamp, frame_cnt);
return 0;
}
static int dbg_timestamp_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_timestamp_show, inode->i_private);
}
static const struct file_operations timestamp_fops = {
.open = dbg_timestamp_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void dbg_regs_print(void *data, const char *str)
{
struct seq_file *s = data;
seq_printf(s, "%s", str);
}
#undef DUMP_REG
static int dbg_dc_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
reg_dump(dc, s, dbg_regs_print);
return 0;
}
static int dbg_dc_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_show, inode->i_private);
}
static const struct file_operations regs_fops = {
.open = dbg_dc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_dc_mode_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
struct tegra_dc_mode *m;
mutex_lock(&dc->lock);
m = &dc->mode;
seq_printf(s,
"pclk: %d\n"
"h_ref_to_sync: %d\n"
"v_ref_to_sync: %d\n"
"h_sync_width: %d\n"
"v_sync_width: %d\n"
"h_back_porch: %d\n"
"v_back_porch: %d\n"
"h_active: %d\n"
"v_active: %d\n"
"h_front_porch: %d\n"
"v_front_porch: %d\n"
"flags: 0x%x\n"
"stereo_mode: %d\n"
"avi_m: 0x%x\n"
"vmode: 0x%x\n",
m->pclk, m->h_ref_to_sync, m->v_ref_to_sync,
m->h_sync_width, m->v_sync_width,
m->h_back_porch, m->v_back_porch,
m->h_active, m->v_active,
m->h_front_porch, m->v_front_porch,
m->flags, m->stereo_mode, m->avi_m, m->vmode);
mutex_unlock(&dc->lock);
return 0;
}
static int dbg_dc_mode_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_mode_show, inode->i_private);
}
static const struct file_operations mode_fops = {
.open = dbg_dc_mode_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_dc_stats_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
mutex_lock(&dc->lock);
seq_printf(s,
"underflows: %llu\n",
dc->stats.underflows);
if (tegra_dc_is_nvdisplay()) {
seq_printf(s,
"underflow_frames: %llu\n",
dc->stats.underflow_frames);
} else {
seq_printf(s,
"underflows_a: %llu\n"
"underflows_b: %llu\n"
"underflows_c: %llu\n",
dc->stats.underflows_a,
dc->stats.underflows_b,
dc->stats.underflows_c);
seq_printf(s,
"underflows_d: %llu\n"
"underflows_h: %llu\n"
"underflows_t: %llu\n",
dc->stats.underflows_d,
dc->stats.underflows_h,
dc->stats.underflows_t);
}
mutex_unlock(&dc->lock);
return 0;
}
static int dbg_dc_stats_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_stats_show, inode->i_private);
}
static int dbg_dc_event_inject_show(struct seq_file *s, void *unused)
{
return 0;
}
static ssize_t dbg_dc_event_inject_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data; /* single_open() initialized */
struct tegra_dc *dc = m ? m->private : NULL;
long event;
int ret;
if (!dc)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &event);
if (ret < 0)
return ret;
/*
* ADF has two seperate events for hotplug connect and disconnect.
* We map event 0x0, and 0x1 for them accordingly. For DC_EXT,
* both events map to HOTPLUG.
*/
if (event == 0x0 || event == 0x1) /* TEGRA_DC_EXT_EVENT_HOTPLUG */
tegra_dc_ext_process_hotplug(dc->ndev->id);
else if (event == 0x2) /* TEGRA_DC_EXT_EVENT_BANDWIDTH_DEC */
tegra_dc_ext_process_bandwidth_renegotiate(
dc->ndev->id, NULL);
else {
dev_err(&dc->ndev->dev, "Unknown event 0x%lx\n", event);
return -EINVAL; /* unknown event number */
}
return len;
}
/* Update the strings as dc.h get updated for new output types*/
static const char * const dc_outtype_strings[] = {
"TEGRA_DC_OUT_RGB",
"TEGRA_DC_OUT_HDMI",
"TEGRA_DC_OUT_DSI",
"TEGRA_DC_OUT_DP",
"TEGRA_DC_OUT_LVDS",
"TEGRA_DC_OUT_NVSR_DP",
"TEGRA_DC_OUT_FAKE_DP",
"TEGRA_DC_OUT_FAKE_DSIA",
"TEGRA_DC_OUT_FAKE_DSIB",
"TEGRA_DC_OUT_FAKE_DSI_GANGED",
"TEGRA_DC_OUT_NULL",
"TEGRA_DC_OUT_UNKNOWN"
};
static int dbg_dc_outtype_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
mutex_lock(&dc->lock);
seq_puts(s, "\n");
seq_printf(s,
"\tDC OUTPUT: \t%s (%d)\n",
dc_outtype_strings[dc->out->type], dc->out->type);
seq_puts(s, "\n");
mutex_unlock(&dc->lock);
return 0;
}
/* Add specific variable related to each output type.
* Save and reuse on changing the output type
*/
#if defined(CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT)
/* array for saving the out_type for each head */
static int *boot_out_type;
static int is_invalid_dc_out(struct tegra_dc *dc, long dc_outtype)
{
if ((dc_outtype != boot_out_type[dc->ndev->id]) &&
(dc_outtype != TEGRA_DC_OUT_FAKE_DP) &&
(dc_outtype != TEGRA_DC_OUT_FAKE_DSIA) &&
(dc_outtype != TEGRA_DC_OUT_FAKE_DSIB) &&
(dc_outtype != TEGRA_DC_OUT_FAKE_DSI_GANGED) &&
(dc_outtype != TEGRA_DC_OUT_NULL)) {
dev_err(&dc->ndev->dev, "Request 0x%lx is unsupported target out_type\n",
dc_outtype);
dev_err(&dc->ndev->dev, "boot_out_type[%d] is 0x%x\n",
dc->ndev->id, boot_out_type[dc->ndev->id]);
return -EINVAL;
}
return 0;
}
static int is_valid_dsi_out(struct tegra_dc *dc, long dc_outtype)
{
if (((dc_outtype >= TEGRA_DC_OUT_FAKE_DSIA) &&
(dc_outtype <= TEGRA_DC_OUT_FAKE_DSI_GANGED)) ||
(dc_outtype == TEGRA_DC_OUT_DSI))
return 1;
return 0;
}
static int is_valid_fake_support(struct tegra_dc *dc, long dc_outtype)
{
if ((dc_outtype == TEGRA_DC_OUT_FAKE_DP) ||
(dc_outtype == TEGRA_DC_OUT_FAKE_DSIA) ||
(dc_outtype == TEGRA_DC_OUT_FAKE_DSIB) ||
(dc_outtype == TEGRA_DC_OUT_FAKE_DSI_GANGED) ||
(dc_outtype == TEGRA_DC_OUT_NULL))
return 1;
return 0;
}
static int set_avdd(struct tegra_dc *dc, long cur_out, long new_out)
{
/* T210 macro_clk is failing SOR access
* if avdd_lcd is not enabled
*/
bool is_enable = false;
struct tegra_dc_out *dc_out =
&dc->dbg_dc_out_info[boot_out_type[dc->ndev->id]].out;
if (tegra_dc_is_nvdisplay())
return 0;
/* cur is fake and new is fake - skip */
if (is_valid_fake_support(dc, cur_out) &&
is_valid_fake_support(dc, new_out))
return 0;
/* cur is valid and new is fake - enable */
if (!is_valid_fake_support(dc, cur_out) &&
is_valid_fake_support(dc, new_out))
is_enable = true;
if (is_enable) {
if (dc_out && dc_out->enable)
dc_out->enable(&dc->ndev->dev);
} else {
if (dc_out && dc_out->disable)
dc_out->disable(&dc->ndev->dev);
}
return 0;
}
static ssize_t dbg_dc_out_type_set(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data; /* single_open() initialized */
struct tegra_dc *dc = m ? m->private : NULL;
long cur_dc_out;
long out_type;
int ret = 0;
bool allocate = false;
if (!dc)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &out_type);
if (ret < 0)
return ret;
if (!dc->pdata->default_out)
return -EINVAL;
/* check out type is out of range then skip */
if (out_type < TEGRA_DC_OUT_RGB || out_type >= TEGRA_DC_OUT_MAX) {
dev_err(&dc->ndev->dev, "Unknown out_type 0x%lx\n", out_type);
return -EINVAL;
}
if (boot_out_type[dc->ndev->id] == -1)
boot_out_type[dc->ndev->id] = dc->pdata->default_out->type;
cur_dc_out = dc->pdata->default_out->type;
/* Nothing to do if new outtype is same as old
* Allow to switch between booted out type and fake panel out
*/
if ((cur_dc_out == out_type) || is_invalid_dc_out(dc, out_type))
return -EINVAL;
/* disable the dc and output controllers */
if (dc->enabled)
tegra_dc_disable(dc);
/* Clear EDID error flags */
if (dc->edid)
dc->edid->errors = 0;
/* If output is already created - save it */
if (dc->out_data) {
dc->dbg_dc_out_info[cur_dc_out].out_data = dc->out_data;
dc->dbg_dc_out_info[cur_dc_out].out_ops = dc->out_ops;
memcpy(&dc->dbg_dc_out_info[cur_dc_out].out, dc->out,
sizeof(struct tegra_dc_out));
dc->dbg_dc_out_info[cur_dc_out].mode = dc->mode;
dc->dbg_dc_out_info[cur_dc_out].edid = dc->edid;
if (is_valid_dsi_out(dc, cur_dc_out) &&
dc->dbg_dc_out_info[cur_dc_out].out_data)
tegra_dc_destroy_dsi_resources(dc, cur_dc_out);
if (!is_valid_fake_support(dc, cur_dc_out))
dc->dbg_dc_out_info[cur_dc_out].fblistindex =
tegra_fb_update_modelist(dc, 0);
set_avdd(dc, cur_dc_out, out_type);
}
/* If output already created - reuse it */
if (dc->dbg_dc_out_info[out_type].out_data) {
mutex_lock(&dc->lp_lock);
mutex_lock(&dc->lock);
/* Change the out type */
dc->pdata->default_out->type = out_type;
dc->out_ops = dc->dbg_dc_out_info[out_type].out_ops;
dc->out_data = dc->dbg_dc_out_info[out_type].out_data;
memcpy(dc->out, &dc->dbg_dc_out_info[out_type].out,
sizeof(struct tegra_dc_out));
dc->mode = dc->dbg_dc_out_info[out_type].mode;
dc->edid = dc->dbg_dc_out_info[out_type].edid;
/* Re-init the resources that are destroyed for dsi */
if (is_valid_dsi_out(dc, out_type))
ret = tegra_dc_reinit_dsi_resources(dc, out_type);
if (!is_valid_fake_support(dc, out_type))
tegra_fb_update_modelist(dc,
dc->dbg_dc_out_info[out_type].fblistindex);
mutex_unlock(&dc->lock);
mutex_unlock(&dc->lp_lock);
if (ret) {
dev_err(&dc->ndev->dev, "Failed to reinit!!!\n");
return -EINVAL;
}
} else {
/* Change the out type */
dc->pdata->default_out->type = out_type;
/* create new - now restricted to fake_dp only */
if (out_type == TEGRA_DC_OUT_FAKE_DP) {
/* set to default bpp */
if (!dc->pdata->default_out->depth)
dc->pdata->default_out->depth = 24;
/* DP and Fake_DP use same data
* Reuse DP data for fake_DP */
if (cur_dc_out != TEGRA_DC_OUT_DP) {
allocate = true;
}
} else if ((out_type >= TEGRA_DC_OUT_FAKE_DSIA) &&
(out_type <= TEGRA_DC_OUT_FAKE_DSI_GANGED)) {
/* DSI and fake DSI use same data
* create new if not created yet
*/
if (!dc->pdata->default_out->depth)
dc->pdata->default_out->depth = 18;
allocate = true;
tegra_dc_init_fakedsi_panel(dc, out_type);
} else if (out_type == TEGRA_DC_OUT_NULL) {
if (!dc->dbg_dc_out_info[TEGRA_DC_OUT_NULL].out_data) {
allocate = true;
}
} else {
/* set back to existing one */
dc->pdata->default_out->type = cur_dc_out;
dev_err(&dc->ndev->dev, "Unknown type is asked: %ld\n",
out_type);
goto by_pass;
}
if (allocate) {
ret = tegra_dc_set_out(dc, dc->pdata->default_out,
true);
if (ret < 0) {
dev_err(&dc->ndev->dev,
"Failed to initialize DC out ops\n");
return -EINVAL;
}
}
dc->dbg_dc_out_info[out_type].out_ops = dc->out_ops;
dc->dbg_dc_out_info[out_type].out_data = dc->out_data;
memcpy(&dc->dbg_dc_out_info[out_type].out, dc->out,
sizeof(struct tegra_dc_out));
dc->dbg_dc_out_info[out_type].mode = dc->mode;
dc->dbg_dc_out_info[out_type].edid = dc->edid;
}
if (tegra_fb_is_console_enabled(dc->pdata))
switch (out_type) {
case TEGRA_DC_OUT_DSI:
case TEGRA_DC_OUT_DP:
if (dc->out_ops->detect)
dc->out_ops->detect(dc);
break;
case TEGRA_DC_OUT_FAKE_DP:
case TEGRA_DC_OUT_FAKE_DSIA:
case TEGRA_DC_OUT_FAKE_DSIB:
case TEGRA_DC_OUT_FAKE_DSI_GANGED:
tegra_fb_update_monspecs(dc->fb, NULL, NULL);
break;
}
by_pass:
/*enable the dc and output controllers */
if (!dc->enabled)
tegra_dc_enable(dc);
return len;
}
#else
static ssize_t dbg_dc_out_type_set(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
return -EINVAL;
}
#endif /*CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT*/
static const struct file_operations stats_fops = {
.open = dbg_dc_stats_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_dc_event_inject_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_event_inject_show, inode->i_private);
}
static const struct file_operations event_inject_fops = {
.open = dbg_dc_event_inject_open,
.read = seq_read,
.write = dbg_dc_event_inject_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_dc_outtype_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_outtype_show, inode->i_private);
}
static const struct file_operations outtype_fops = {
.open = dbg_dc_outtype_open,
.read = seq_read,
.write = dbg_dc_out_type_set,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_edid_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
struct tegra_edid *edid = dc->edid;
struct tegra_dc_edid *data;
u8 *buf;
int i;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
if (dc->out->type == TEGRA_DC_OUT_DSI ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSIA ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSIB ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSI_GANGED) {
seq_puts(s, "No EDID\n");
return 0;
}
if (WARN_ON(!dc->edid))
return -EINVAL;
data = tegra_edid_get_data(edid);
if (!data) {
seq_puts(s, "No EDID\n");
return 0;
}
buf = data->buf;
for (i = 0; i < data->len; i++) {
#ifdef DEBUG
if (i % 16 == 0)
seq_printf(s, "edid[%03x] =", i);
#endif
seq_printf(s, " %02x", buf[i]);
if (i % 16 == 15)
seq_puts(s, "\n");
}
tegra_edid_put_data(data);
return 0;
}
static int dbg_edid_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_edid_show, inode->i_private);
}
static ssize_t dbg_edid_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc *dc = m ? m->private : NULL;
int ret;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
dc->vedid = false;
kfree(dc->vedid_data);
dc->vedid_data = NULL;
if (len < 128) /* invalid edid, turn off vedid */
return 1;
dc->vedid_data = kmalloc(sizeof(char) * len, GFP_KERNEL);
if (!dc->vedid_data) {
dev_err(&dc->ndev->dev, "no memory for edid\n");
return 0; /* dc->vedid is false */
}
ret = copy_from_user(dc->vedid_data, addr, len);
if (ret < 0) {
dev_err(&dc->ndev->dev, "error copying edid\n");
kfree(dc->vedid_data);
dc->vedid_data = NULL;
return ret; /* dc->vedid is false */
}
dc->vedid = true;
return len;
}
static const struct file_operations edid_fops = {
.open = dbg_edid_open,
.read = seq_read,
.llseek = seq_lseek,
.write = dbg_edid_write,
.release = single_release,
};
static int dbg_hotplug_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
rmb();
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
seq_put_decimal_ll(s, '\0', dc->out->hotplug_state);
#else
seq_put_decimal_ll(s, "", dc->out->hotplug_state);
#endif
seq_putc(s, '\n');
return 0;
}
static int dbg_hotplug_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_hotplug_show, inode->i_private);
}
static ssize_t dbg_hotplug_write(struct file *file, const char __user *addr,
size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data; /* single_open() initialized */
struct tegra_dc *dc = m ? m->private : NULL;
int ret;
long new_state;
int hotplug_state;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &new_state);
if (ret < 0)
return ret;
mutex_lock(&dc->lock);
rmb();
hotplug_state = dc->out->hotplug_state;
if (tegra_platform_is_sim() || tegra_platform_is_fpga())
goto skip_gpio;
if (hotplug_state == TEGRA_HPD_STATE_NORMAL &&
new_state != TEGRA_HPD_STATE_NORMAL &&
dc->hotplug_supported) {
/* we are overriding the hpd GPIO, so ignore the interrupt. */
int gpio_irq = gpio_to_irq(dc->out->hotplug_gpio);
disable_irq(gpio_irq);
} else if (hotplug_state != TEGRA_HPD_STATE_NORMAL &&
new_state == TEGRA_HPD_STATE_NORMAL &&
dc->hotplug_supported) {
/* restore the interrupt for hpd GPIO. */
int gpio_irq = gpio_to_irq(dc->out->hotplug_gpio);
enable_irq(gpio_irq);
}
skip_gpio:
dc->out->hotplug_state = new_state;
wmb();
/* retrigger the hotplug
* exception: dont trigger for simulator with hotplug
* state TEGRA_HPD_STATE_NORMAL since hpd_state
* callback for sim always returns true
* */
reinit_completion(&dc->hpd_complete);
if (dc->out_ops->detect)
dc->connected = dc->out_ops->detect(dc);
mutex_unlock(&dc->lock);
wait_for_completion(&dc->hpd_complete);
return len;
}
static const struct file_operations dbg_hotplug_fops = {
.open = dbg_hotplug_open,
.read = seq_read,
.write = dbg_hotplug_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_color_expand_enable_show(struct seq_file *m, void *unused)
{
struct tegra_dc_win *win = m->private;
if (!win)
return -EINVAL;
seq_printf(m, "%d\n", win->color_expand_enable);
return 0;
}
static int dbg_color_expand_enable_open(struct inode *inode,
struct file *file)
{
return single_open(file, dbg_color_expand_enable_show,
inode->i_private);
}
static ssize_t dbg_color_expand_enable_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc_win *win = m->private;
long new_state;
int ret;
if (!win)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &new_state);
if (ret < 0)
return ret;
if (new_state == 1)
win->color_expand_enable = true;
else if (new_state == 0)
win->color_expand_enable = false;
return len;
}
static const struct file_operations dbg_color_expand_enable_fops = {
.open = dbg_color_expand_enable_open,
.read = seq_read,
.write = dbg_color_expand_enable_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_degamma_show(struct seq_file *m, void *unused)
{
struct tegra_dc_win *win = m->private;
long degamma_setting = 0;
if (!win)
return -EINVAL;
degamma_setting = tegra_nvdisp_get_degamma_user_config(win);
seq_printf(m, "%ld\n", degamma_setting);
return 0;
}
static int dbg_degamma_open(struct inode *inode,
struct file *file)
{
return single_open(file, dbg_degamma_show,
inode->i_private);
}
/* Note that degamma programmed here will not be persistent across
* window attach/detach.
*/
static ssize_t dbg_degamma_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc_win *win = m->private;
long degamma_setting;
int ret;
if (!win)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &degamma_setting);
if (ret < 0)
return ret;
tegra_nvdisp_set_degamma_user_config(win, degamma_setting);
return len;
}
static int dbg_force_user_degamma_show(struct seq_file *m, void *unused)
{
struct tegra_dc_win *win = m->private;
if (!win)
return -EINVAL;
seq_printf(m, "%d\n", win->force_user_degamma);
return 0;
}
static int dbg_force_user_degamma_open(struct inode *inode,
struct file *file)
{
return single_open(file, dbg_force_user_degamma_show,
inode->i_private);
}
static ssize_t dbg_force_user_degamma_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc_win *win = m->private;
long new_state;
int ret;
if (!win)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &new_state);
if (ret < 0)
return ret;
if (new_state == 1)
win->force_user_degamma = true;
else if (new_state == 0)
win->force_user_degamma = false;
return len;
}
static const struct file_operations dbg_force_user_degamma_fops = {
.open = dbg_force_user_degamma_open,
.read = seq_read,
.write = dbg_force_user_degamma_write,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations dbg_degamma_fops = {
.open = dbg_degamma_open,
.read = seq_read,
.write = dbg_degamma_write,
.llseek = seq_lseek,
.release = single_release,
};
static bool tegra_dc_or_is_dsi(struct tegra_dc *dc)
{
if (dc->out_ops && !dc->out_ops->get_connector_instance &&
dc->out->type == TEGRA_DC_OUT_DSI)
return true;
else
return false;
}
static int dbg_nvdisp_topology_show(struct seq_file *m, void *unused)
{
int i;
struct tegra_dc *dc;
for (i = 0; i < tegra_dc_get_numof_reg_disps(); i++) {
dc = tegra_dc_get_dc(i);
if (!dc->current_topology.valid) {
seq_printf(m, "DISPLAY ID:%d HEAD:%d DANGLING TOPOLOGY\n",
i, tegra_dc_get_head(dc));
continue;
}
if (tegra_dc_or_is_dsi(dc))
seq_printf(m, "DISPLAY ID:%d HEAD:%d OUT_TYPE:%d DSI\n",
i, tegra_dc_get_head(dc),
dc->current_topology.protocol);
else
seq_printf(m, "DISPLAY ID:%d HEAD:%d OUT_TYPE:%d SOR%d\n",
i, tegra_dc_get_head(dc),
dc->current_topology.protocol,
dc->current_topology.conn_inst);
}
return 0;
}
static int dbg_nvdisp_topology_open(struct inode *inode,
struct file *file)
{
return single_open(file, dbg_nvdisp_topology_show,
inode->i_private);
}
static bool is_topology_same(struct tegra_dc_topology topology1,
struct tegra_dc_topology topology2)
{
if (topology1.disp_id != topology2.disp_id)
return false;
if (topology1.protocol != topology2.protocol)
return false;
if (topology1.conn_inst != topology2.conn_inst)
return false;
return true;
}
static bool is_topology_reset(struct tegra_dc_topology topology)
{
if ((topology.disp_id == TEGRA_DC_TOPOLOGY_RESTORE) &&
(topology.protocol == TEGRA_DC_TOPOLOGY_RESTORE) &&
(topology.conn_inst == TEGRA_DC_TOPOLOGY_RESTORE))
return true;
return false;
}
static bool is_topology_possible(struct tegra_dc_topology topology)
{
struct tegra_dc *dc = NULL;
/* Check to see if restore boot topology is called */
if (is_topology_reset(topology))
return true;
if (topology.disp_id >= tegra_dc_get_numof_reg_disps())
return false;
if (topology.conn_inst >= tegra_dc_get_numof_dispsors())
return false;
/* Prevent crossbar on DSI display until support is added in sw */
dc = tegra_dc_get_dc(topology.disp_id);
if (tegra_dc_or_is_dsi(dc))
return false;
/* Currently supports only DP,FAKE_DP and HDMI in SW */
if ((topology.protocol == TEGRA_DC_OUT_FAKE_DP) ||
(topology.protocol == TEGRA_DC_OUT_DP) ||
(topology.protocol == TEGRA_DC_OUT_HDMI)) {
return true;
}
return false;
}
static int tegra_dc_topology_parse(char *buf, int nargs,
struct tegra_dc_topology *topology)
{
char *b = NULL, *orig_b = NULL, *c = NULL;
int i = 0, args[TEGRA_DC_TOPOLOGY_NARGS] = {TEGRA_DC_TOPOLOGY_INVALID};
orig_b = kstrdup(buf, GFP_KERNEL);
b = orig_b;
for (i = 0; i < nargs; i++) {
if (!b)
break;
b = strim(b);
c = strsep(&b, ":");
if (!strlen(c))
break;
args[i] = simple_strtol(c, NULL, 10);
if (args[i] < TEGRA_DC_TOPOLOGY_ARG_MIN ||
args[i] > TEGRA_DC_TOPOLOGY_ARG_MAX)
break;
}
kfree(orig_b);
if (i == nargs) {
topology->disp_id = args[0];
topology->protocol = args[1];
topology->conn_inst = args[2];
return 0;
} else {
return -EINVAL;
}
}
static int tegra_dc_crossbar_display_reinit(struct tegra_dc *dc,
struct tegra_dc_topology topology)
{
int ret = 0;
dc->pdata->default_out->type = topology.protocol;
dc->current_topology = topology;
/* Parse the platform data again */
dc->pdata = of_dc_parse_platform_data(dc->ndev, dc->pdata);
if (IS_ERR_OR_NULL(dc->pdata)) {
pr_warn("crossbar: parsing platform data for new topology failed\n");
return -EFAULT;
}
if (dc->out && dc->out->hotplug_init)
dc->out->hotplug_init(&dc->ndev->dev);
ret = tegra_dc_set_out(dc, dc->pdata->default_out, true);
if (ret < 0) {
pr_warn("crossbar: initialize DC out ops for new topology failed\n");
return -EFAULT;
}
if (dc->out_ops->get_connector_instance) {
char sor_path[CHAR_BUF_SIZE_MAX];
int ctrl_num = -1;
ctrl_num = dc->out_ops->get_connector_instance(dc);
if (ctrl_num < 0) {
pr_err("crossbar: SOR controller instance not found\n");
return -EFAULT;
}
snprintf(sor_path, sizeof(sor_path),
"/sys/kernel/debug/tegra_sor%d", ctrl_num);
dc->sor_link = debugfs_create_symlink("sor", dc->debugdir, sor_path);
if (!dc->sor_link) {
pr_err("crossbar: couldn't create symbolic link to SOR%d for DC%d\n",
ctrl_num, dc->ctrl_num);
return -EFAULT;
}
}
if (dc->out_ops && dc->out_ops->hotplug_init)
dc->out_ops->hotplug_init(dc);
if (dc->out_ops && dc->out_ops->detect)
dc->connected = dc->out_ops->detect(dc);
dc->current_topology.valid = true;
return ret;
}
static ssize_t dbg_nvdisp_topology_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
int res = 0, ret = 0;
int i = 0;
char buf[CHAR_BUF_SIZE_MAX] = {'\0'};
struct tegra_dc *primary = NULL;
struct tegra_dc *curr = NULL;
bool dangling = false;
struct tegra_dc_topology topology = {false, TEGRA_DC_TOPOLOGY_INVALID,
TEGRA_DC_TOPOLOGY_INVALID, TEGRA_DC_TOPOLOGY_INVALID};
res = copy_from_user(buf, addr, CHAR_BUF_SIZE_MAX);
ret = tegra_dc_topology_parse(buf, TEGRA_DC_TOPOLOGY_NARGS, &topology);
if (ret < 0) {
pr_warn("crossbar: invalid input format for topology\n");
return -EINVAL;
}
/* Check to see if all registered displays are disabled */
for (i = 0; i < tegra_dc_get_numof_reg_disps(); i++) {
curr = tegra_dc_get_dc(i);
if (curr->enabled) {
pr_warn("crossbar: all displays are not disabled\n");
return -EINVAL;
}
}
curr = NULL;
if (!is_topology_possible(topology)) {
pr_warn("crossbar: topology %d:%d:%d not possible\n",
topology.disp_id, topology.protocol,
topology.conn_inst);
return -EINVAL;
}
if (is_topology_reset(topology)) {
/* Reset topology */
/* Destroy out_type and sor for reconfigured displays */
for (i = 0; i < tegra_dc_get_numof_reg_disps(); i++) {
curr = tegra_dc_get_dc(i);
if (curr->current_topology.valid &&
!is_topology_same(curr->current_topology,
curr->boot_topology)) {
/* disable the dc and output controllers */
tegra_dc_shutdown(curr->ndev);
if (curr->out_ops && curr->out_ops->destroy)
curr->out_ops->destroy(curr);
}
}
/* Reinitialize only reconfigured displays */
for (i = 0; i < tegra_dc_get_numof_reg_disps(); i++) {
curr = tegra_dc_get_dc(i);
if (!curr->current_topology.valid ||
!is_topology_same(curr->current_topology,
curr->boot_topology)) {
ret = tegra_dc_crossbar_display_reinit(curr,
topology);
curr->current_topology = curr->boot_topology;
if (ret < 0)
break;
}
}
} else {
/* Single display workflow */
primary = tegra_dc_get_dc(topology.disp_id);
for (i = 0; i < tegra_dc_get_numof_reg_disps(); i++) {
curr = tegra_dc_get_dc(i);
if (tegra_dc_or_is_dsi(curr)) {
continue;
} else {
if (curr->out_ops &&
curr->out_ops->get_connector_instance &&
(curr->out_ops->get_connector_instance(curr)
== topology.conn_inst)) {
dangling = true;
break;
}
}
}
tegra_dc_shutdown(primary->ndev);
if (primary->out_ops && primary->out_ops->destroy)
primary->out_ops->destroy(primary);
if (dangling) {
tegra_dc_shutdown(curr->ndev);
if (curr->out_ops && curr->out_ops->destroy)
curr->out_ops->destroy(curr);
}
ret = tegra_dc_crossbar_display_reinit(primary, topology);
}
if (ret < 0) {
pr_warn("crossbar: switching to topology %d:%d:%d failed\n",
topology.disp_id, topology.protocol,
topology.conn_inst);
return -EINVAL;
}
pr_info("crossbar: switching to topology %d:%d:%d success\n",
topology.disp_id, topology.protocol, topology.conn_inst);
return len;
}
static const struct file_operations dbg_nvdisp_topology_fops = {
.open = dbg_nvdisp_topology_open,
.read = seq_read,
.write = dbg_nvdisp_topology_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_vrr_enable_show(struct seq_file *m, void *unused)
{
struct tegra_vrr *vrr = m->private;
if (!vrr)
return -EINVAL;
seq_printf(m, "vrr enable state: %d\n", vrr->enable);
return 0;
}
static int dbg_vrr_enable_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_vrr_enable_show, inode->i_private);
}
static const struct file_operations dbg_vrr_enable_ops = {
.open = dbg_vrr_enable_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_vrr_dcb_show(struct seq_file *m, void *unused)
{
struct tegra_vrr *vrr = m->private;
if (!vrr)
return -EINVAL;
seq_printf(m, "vrr dc balance: %d\n", vrr->dcb);
return 0;
}
static int dbg_vrr_dcb_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_vrr_dcb_show, inode->i_private);
}
static const struct file_operations dbg_vrr_dcb_ops = {
.open = dbg_vrr_dcb_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_vrr_db_tolerance_show(struct seq_file *m, void *unused)
{
struct tegra_vrr *vrr = m->private;
if (!vrr)
return -EINVAL;
seq_printf(m, "vrr db tolerance: %d\n", vrr->db_tolerance);
return 0;
}
static ssize_t dbg_vrr_db_tolerance_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_vrr *vrr = m->private;
long new_value;
int ret;
if (!vrr)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &new_value);
if (ret < 0)
return ret;
vrr->db_tolerance = new_value;
return len;
}
static int dbg_vrr_db_tolerance_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_vrr_db_tolerance_show, inode->i_private);
}
static const struct file_operations dbg_vrr_db_tolerance_ops = {
.open = dbg_vrr_db_tolerance_open,
.read = seq_read,
.write = dbg_vrr_db_tolerance_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_vrr_frame_avg_pct_show(struct seq_file *m, void *unused)
{
struct tegra_vrr *vrr = m->private;
if (!vrr)
return -EINVAL;
seq_printf(m, "vrr frame average percent: %d\n", vrr->frame_avg_pct);
return 0;
}
static ssize_t dbg_vrr_frame_avg_pct_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_vrr *vrr = m->private;
long new_pct;
int ret;
if (!vrr)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &new_pct);
if (ret < 0)
return ret;
vrr->frame_avg_pct = new_pct;
return len;
}
static int dbg_vrr_frame_avg_pct_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_vrr_frame_avg_pct_show, inode->i_private);
}
static const struct file_operations dbg_vrr_frame_avg_pct_ops = {
.open = dbg_vrr_frame_avg_pct_open,
.read = seq_read,
.write = dbg_vrr_frame_avg_pct_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_vrr_fluct_avg_pct_show(struct seq_file *m, void *unused)
{
struct tegra_vrr *vrr = m->private;
if (!vrr)
return -EINVAL;
seq_printf(m, "vrr fluct average percent: %d\n", vrr->fluct_avg_pct);
return 0;
}
static ssize_t dbg_vrr_fluct_avg_pct_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_vrr *vrr = m->private;
long new_pct;
int ret;
if (!vrr)
return -EINVAL;
ret = kstrtol_from_user(addr, len, 10, &new_pct);
if (ret < 0)
return ret;
vrr->fluct_avg_pct = new_pct;
return len;
}
static int dbg_vrr_fluct_avg_pct_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_vrr_fluct_avg_pct_show, inode->i_private);
}
static const struct file_operations dbg_vrr_fluct_avg_pct_ops = {
.open = dbg_vrr_fluct_avg_pct_open,
.read = seq_read,
.write = dbg_vrr_fluct_avg_pct_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_tegrahw_type_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
/* All platforms other than real silicon are taken
as simulation */
seq_printf(m,
"real_silicon: %d\n",
tegra_platform_is_silicon());
return 0;
}
static int dbg_tegrahw_type_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_tegrahw_type_show, inode->i_private);
}
static const struct file_operations dbg_tegrahw_type_ops = {
.open = dbg_tegrahw_type_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static ssize_t dbg_background_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc *dc = m->private;
unsigned long background;
u32 old_state;
if (!dc)
return -EINVAL;
if (kstrtoul_from_user(addr, len, 0, &background) < 0)
return -EINVAL;
if (!dc->enabled)
return -EBUSY;
tegra_dc_get(dc);
mutex_lock(&dc->lock);
old_state = tegra_dc_readl(dc, DC_CMD_STATE_ACCESS);
/* write active version */
tegra_dc_writel(dc, WRITE_MUX_ACTIVE | READ_MUX_ACTIVE,
DC_CMD_STATE_ACCESS);
tegra_dc_readl(dc, DC_CMD_STATE_ACCESS); /* flush */
tegra_dc_writel(dc, background, DC_DISP_BLEND_BACKGROUND_COLOR);
/* write assembly version */
tegra_dc_writel(dc, WRITE_MUX_ASSEMBLY | READ_MUX_ASSEMBLY,
DC_CMD_STATE_ACCESS);
tegra_dc_readl(dc, DC_CMD_STATE_ACCESS); /* flush */
tegra_dc_writel(dc, background, DC_DISP_BLEND_BACKGROUND_COLOR);
/* cycle the values through assemby -> arm -> active */
tegra_dc_writel(dc, GENERAL_UPDATE, DC_CMD_STATE_CONTROL);
tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); /* flush */
tegra_dc_writel(dc, NC_HOST_TRIG | GENERAL_ACT_REQ,
DC_CMD_STATE_CONTROL);
tegra_dc_writel(dc, old_state, DC_CMD_STATE_ACCESS);
tegra_dc_readl(dc, DC_CMD_STATE_ACCESS); /* flush */
mutex_unlock(&dc->lock);
tegra_dc_put(dc);
return len;
}
static int dbg_background_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
u32 old_state;
u32 background;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
if (!dc->enabled)
return -EBUSY;
tegra_dc_get(dc);
mutex_lock(&dc->lock);
old_state = tegra_dc_readl(dc, DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, WRITE_MUX_ACTIVE | READ_MUX_ACTIVE,
DC_CMD_STATE_ACCESS);
background = tegra_dc_readl(dc, DC_DISP_BLEND_BACKGROUND_COLOR);
tegra_dc_writel(dc, old_state, DC_CMD_STATE_ACCESS);
mutex_unlock(&dc->lock);
tegra_dc_put(dc);
seq_printf(m, "%#x\n", (unsigned)background);
return 0;
}
static int dbg_background_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_background_show, inode->i_private);
}
static const struct file_operations dbg_background_ops = {
.open = dbg_background_open,
.write = dbg_background_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* toggly the enable/disable for any windows with 1 bit set */
static ssize_t dbg_window_toggle_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc *dc = m->private;
unsigned long windows;
int i;
u32 status;
int retries;
if (!dc)
return -EINVAL;
if (kstrtoul_from_user(addr, len, 0, &windows) < 0)
return -EINVAL;
if (!dc->enabled)
return 0;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
/* limit the request only to valid windows */
windows &= dc->valid_windows;
for_each_set_bit(i, &windows, tegra_dc_get_numof_dispwindows()) {
u32 val;
/* select the assembly registers for window i */
tegra_dc_writel(dc, WRITE_MUX_ASSEMBLY | READ_MUX_ASSEMBLY,
DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, WINDOW_A_SELECT << i,
DC_CMD_DISPLAY_WINDOW_HEADER);
/* toggle the enable bit */
val = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
val ^= WIN_ENABLE;
dev_dbg(&dc->ndev->dev, "%s window #%d\n",
(val & WIN_ENABLE) ? "enabling" : "disabling", i);
tegra_dc_writel(dc, val, DC_WIN_WIN_OPTIONS);
/* post the update */
tegra_dc_writel(dc, WIN_A_UPDATE << i, DC_CMD_STATE_CONTROL);
retries = 8;
do {
status = tegra_dc_readl(dc, DC_CMD_STATE_CONTROL);
retries--;
} while (retries && (status & (WIN_A_UPDATE << i)));
tegra_dc_writel(dc, WIN_A_ACT_REQ << i, DC_CMD_STATE_CONTROL);
}
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return len;
}
/* reading shows the enabled windows */
static int dbg_window_toggle_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
int i;
unsigned long windows;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
/* limit the request only to valid windows */
windows = 0;
for_each_set_bit(i, &dc->valid_windows,
tegra_dc_get_numof_dispwindows()) {
u32 val;
/* select the active registers for window i */
tegra_dc_writel(dc, WRITE_MUX_ACTIVE | READ_MUX_ACTIVE,
DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, WINDOW_A_SELECT << i,
DC_CMD_DISPLAY_WINDOW_HEADER);
/* add i to a bitmap if WIN_ENABLE is set */
val = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
if (val & WIN_ENABLE)
set_bit(i, &windows);
}
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
seq_printf(m, "%#lx %#lx\n", dc->valid_windows, windows);
return 0;
}
static int dbg_window_toggle_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_window_toggle_show, inode->i_private);
}
static const struct file_operations dbg_window_toggle_ops = {
.open = dbg_window_toggle_open,
.write = dbg_window_toggle_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_dc_cmu_lut1_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
u32 val;
int i;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
/* Disable CMU while reading LUTs */
val = tegra_dc_readl(dc, DC_DISP_DISP_COLOR_CONTROL);
tegra_dc_writel(dc, val & ~CMU_ENABLE, DC_DISP_DISP_COLOR_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
_tegra_dc_wait_for_frame_end(dc,
div_s64(dc->frametime_ns, 1000000ll) * 2);
for (i = 0; i < 256; i++) {
tegra_dc_writel(dc, LUT1_READ_EN | LUT1_READ_ADDR(i),
DC_COM_CMU_LUT1_READ);
seq_printf(s, "%lu\n",
LUT1_READ_DATA(tegra_dc_readl(dc, DC_COM_CMU_LUT1)));
}
tegra_dc_writel(dc, 0, DC_COM_CMU_LUT1_READ);
tegra_dc_writel(dc, val, DC_DISP_DISP_COLOR_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return 0;
}
static int dbg_dc_cmu_lut1_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_cmu_lut1_show, inode->i_private);
}
static const struct file_operations cmu_lut1_fops = {
.open = dbg_dc_cmu_lut1_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_dc_cmu_lut2_show(struct seq_file *s, void *unused)
{
struct tegra_dc *dc = s->private;
u32 val;
int i;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
/* Disable CMU while reading LUTs */
val = tegra_dc_readl(dc, DC_DISP_DISP_COLOR_CONTROL);
tegra_dc_writel(dc, val & ~CMU_ENABLE, DC_DISP_DISP_COLOR_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
_tegra_dc_wait_for_frame_end(dc,
div_s64(dc->frametime_ns, 1000000ll) * 2);
for (i = 0; i < 960; i++) {
tegra_dc_writel(dc, LUT2_READ_EN | LUT2_READ_ADDR(i),
DC_COM_CMU_LUT2_READ);
seq_printf(s, "%lu\n",
LUT2_READ_DATA(tegra_dc_readl(dc, DC_COM_CMU_LUT2)));
}
tegra_dc_writel(dc, 0, DC_COM_CMU_LUT2_READ);
tegra_dc_writel(dc, val, DC_DISP_DISP_COLOR_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return 0;
}
static int dbg_dc_cmu_lut2_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_dc_cmu_lut2_show, inode->i_private);
}
static const struct file_operations cmu_lut2_fops = {
.open = dbg_dc_cmu_lut2_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
#define NVDISP_WIN_CSC_FILEOPS(name) \
static int dbg_nvdisp_win_csc_##name##_show(struct seq_file *m, void *unused)\
{ \
struct tegra_dc_win *win = m->private; \
\
if (!win) \
return -EINVAL; \
seq_printf(m, "%u\n", win->nvdisp_win_csc.name); \
return 0; \
} \
\
static int dbg_nvdisp_win_csc_##name##_open(struct inode *inode, \
struct file *file) \
{ \
return single_open(file, dbg_nvdisp_win_csc_##name##_show, \
inode->i_private); \
} \
\
static ssize_t dbg_nvdisp_win_csc_##name##_write(struct file *file, \
const char __user *addr, size_t len, loff_t *pos) \
{ \
struct tegra_dc_win *win; \
struct seq_file *m = file->private_data; \
u32 user_csc; \
\
win = m ? m->private : NULL; \
if (kstrtou32_from_user(addr, len, 10, &user_csc) < 0) \
return -EINVAL; \
\
win->nvdisp_win_csc.name = user_csc; \
win->csc_dirty = 1; \
return len; \
} \
\
static const struct file_operations dbg_nvdisp_win_csc_##name##_fops = {\
.open = dbg_nvdisp_win_csc_##name##_open, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
.write = dbg_nvdisp_win_csc_##name##_write, \
}
NVDISP_WIN_CSC_FILEOPS(r2r);
NVDISP_WIN_CSC_FILEOPS(g2r);
NVDISP_WIN_CSC_FILEOPS(b2r);
NVDISP_WIN_CSC_FILEOPS(const2r);
NVDISP_WIN_CSC_FILEOPS(r2g);
NVDISP_WIN_CSC_FILEOPS(g2g);
NVDISP_WIN_CSC_FILEOPS(b2g);
NVDISP_WIN_CSC_FILEOPS(const2g);
NVDISP_WIN_CSC_FILEOPS(r2b);
NVDISP_WIN_CSC_FILEOPS(g2b);
NVDISP_WIN_CSC_FILEOPS(b2b);
NVDISP_WIN_CSC_FILEOPS(const2b);
#undef NVDISP_WIN_CSC_FILEOPS
static int dbg_nvdisp_win_csc_force_user_csc_show(struct seq_file *m,
void *unused)
{
struct tegra_dc_win *win = m ? m->private : NULL;
if (win == NULL)
return -EINVAL;
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
seq_put_decimal_ll(m, '\0', win->force_user_csc);
#else
seq_put_decimal_ll(m, "", win->force_user_csc);
#endif
seq_putc(m, '\n');
return 0;
}
static int dbg_nvdisp_win_csc_force_user_csc_open(struct inode *inode,
struct file *file)
{
return single_open(file, dbg_nvdisp_win_csc_force_user_csc_show,
inode->i_private);
}
static ssize_t dbg_nvdisp_win_csc_force_user_csc_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
int ret = 0;
int force_user_csc = 0;
struct tegra_dc_win *win;
struct seq_file *m = file->private_data;
win = m ? m->private : NULL;
if (!win)
return -EFAULT;
ret = kstrtoint_from_user(addr, len, 10,
&force_user_csc);
if (ret < 0)
return ret;
win->force_user_csc = (force_user_csc == 0)?0:1;
return len;
}
static const struct file_operations nvdisp_win_csc_force_user_csc_fops = {
.open = dbg_nvdisp_win_csc_force_user_csc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = dbg_nvdisp_win_csc_force_user_csc_write,
};
static int dbg_measure_refresh_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
seq_puts(m, "Write capture time in seconds to this node.\n");
seq_puts(m, "Results will show up in dmesg.\n");
return 0;
}
static ssize_t dbg_measure_refresh_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
struct seq_file *m = file->private_data;
struct tegra_dc *dc = m->private;
s32 seconds;
u32 fe_count;
int ret;
fixed20_12 refresh_rate;
fixed20_12 seconds_fixed;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
ret = kstrtoint_from_user(addr, len, 10, &seconds);
if (ret < 0 || seconds < 1) {
dev_info(&dc->ndev->dev,
"specify integer number of seconds greater than 0\n");
return -EINVAL;
}
dev_info(&dc->ndev->dev, "measuring for %d seconds\n", seconds);
mutex_lock(&dc->lock);
_tegra_dc_config_frame_end_intr(dc, true);
dc->dbg_fe_count = 0;
mutex_unlock(&dc->lock);
msleep(1000 * seconds);
mutex_lock(&dc->lock);
_tegra_dc_config_frame_end_intr(dc, false);
fe_count = dc->dbg_fe_count;
mutex_unlock(&dc->lock);
refresh_rate.full = dfixed_const(fe_count);
seconds_fixed.full = dfixed_const(seconds);
refresh_rate.full = dfixed_div(refresh_rate, seconds_fixed);
/* Print fixed point 20.12 in decimal, truncating the 12-bit fractional
part to 2 decimal points */
dev_info(&dc->ndev->dev, "refresh rate: %d.%dHz\n",
dfixed_trunc(refresh_rate),
dfixed_frac(refresh_rate) * 100 / 4096);
return len;
}
static int dbg_measure_refresh_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_measure_refresh_show, inode->i_private);
}
static const struct file_operations dbg_measure_refresh_ops = {
.open = dbg_measure_refresh_open,
.read = seq_read,
.write = dbg_measure_refresh_write,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_hw_index_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
seq_printf(m, "Hardware index: %d\n", dc->ctrl_num);
return 0;
}
static int dbg_hw_index_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_hw_index_show, inode->i_private);
}
static const struct file_operations dbg_hw_index_ops = {
.open = dbg_hw_index_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_flip_stats_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
if (WARN_ON(!dc || !dc->out))
return -EINVAL;
seq_printf(m, "Flips queued: %ld\n",
atomic64_read(&dc->flip_stats.flips_queued));
seq_printf(m, "Flips skipped: %ld\n",
atomic64_read(&dc->flip_stats.flips_skipped));
seq_printf(m, "Flips completed: %ld\n",
atomic64_read(&dc->flip_stats.flips_cmpltd));
return 0;
}
static int dbg_flip_stats_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_flip_stats_show, inode->i_private);
}
static const struct file_operations dbg_flip_stats_ops = {
.open = dbg_flip_stats_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dbg_measure_latency_show(struct seq_file *m, void *unused)
{
struct tegra_dc *dc = m->private;
if (WARN_ON(!dc))
return -EINVAL;
mutex_lock(&dc->msrmnt_info.lock);
seq_printf(m, "%d\n", dc->msrmnt_info.enabled);
mutex_unlock(&dc->msrmnt_info.lock);
return 0;
}
static ssize_t dbg_measure_latency_write(struct file *file,
const char __user *addr, size_t len, loff_t *pos)
{
int ret;
int enable_val;
struct seq_file *m = file->private_data;
struct tegra_dc *dc = m->private;
ret = kstrtoint_from_user(addr, len, 10, &enable_val);
if (ret < 0)
return ret;
ret = tegra_dc_en_dis_latency_msrmnt_mode(dc, enable_val);
return len;
}
static int dbg_measure_latency_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_measure_latency_show, inode->i_private);
}
static const struct file_operations dbg_measure_latency_ops = {
.open = dbg_measure_latency_open,
.read = seq_read,
.write = dbg_measure_latency_write,
.llseek = seq_lseek,
.release = single_release,
};
static void tegra_dc_remove_debugfs(struct tegra_dc *dc)
{
if (dc->debugdir)
debugfs_remove_recursive(dc->debugdir);
dc->debugdir = NULL;
if (tegra_dc_is_nvdisplay()) {
debugfs_remove_recursive(dc->debug_common_dir);
dc->debug_common_dir = NULL;
}
}
/*Create file for all elements of nvdc_nvdisp_cmu per window*/
#define CREATE_NVDISP_WIN_CSC_SYSFS(name) \
do { \
retval = debugfs_create_file(#name, 0444, wincscdir, win, \
&dbg_nvdisp_win_csc_##name##_fops); \
if (!retval) \
goto remove_out; \
} \
while (0)
static void tegra_dc_create_debugfs(struct tegra_dc *dc)
{
struct dentry *retval, *vrrdir;
struct dentry *windir, *wincscdir, *windegammadir;
char winname[50];
u32 i;
char devname[50];
snprintf(devname, sizeof(devname), "tegradc.%d", dc->ndev->id);
dc->debugdir = debugfs_create_dir(devname, NULL);
if (!dc->debugdir)
goto remove_out;
retval = debugfs_create_file("timestamp", 0444, dc->debugdir, dc,
&timestamp_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("regs", 0444, dc->debugdir, dc,
&regs_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("mode", 0444, dc->debugdir, dc,
&mode_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("stats", 0444, dc->debugdir, dc,
&stats_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("event_inject", 0444, dc->debugdir, dc,
&event_inject_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("out_type", 0444, dc->debugdir, dc,
&outtype_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("edid", 0444, dc->debugdir, dc,
&edid_fops);
if (!retval)
goto remove_out;
if (dc->out_ops->detect) {
/* only create the file if hotplug is supported */
retval = debugfs_create_file("hotplug", 0444, dc->debugdir,
dc, &dbg_hotplug_fops);
if (!retval)
goto remove_out;
}
vrrdir = debugfs_create_dir("vrr", dc->debugdir);
if (!vrrdir)
goto remove_out;
retval = debugfs_create_file("enable", 0444, vrrdir,
dc->out->vrr, &dbg_vrr_enable_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("dcb", 0444, vrrdir,
dc->out->vrr, &dbg_vrr_dcb_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("frame_avg_pct", 0444, vrrdir,
dc->out->vrr, &dbg_vrr_frame_avg_pct_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("fluct_avg_pct", 0444, vrrdir,
dc->out->vrr, &dbg_vrr_fluct_avg_pct_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("tegrahw_type", 0444, dc->debugdir,
dc, &dbg_tegrahw_type_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("background", 0444, dc->debugdir,
dc, &dbg_background_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("window_toggle", 0444, dc->debugdir,
dc, &dbg_window_toggle_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("cmu_lut1", 0444, dc->debugdir, dc,
&cmu_lut1_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("cmu_lut2", 0444, dc->debugdir, dc,
&cmu_lut2_fops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("measure_refresh", 0444, dc->debugdir,
dc, &dbg_measure_refresh_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("hw_index", 0444, dc->debugdir,
dc, &dbg_hw_index_ops);
if (!retval)
goto remove_out;
retval = debugfs_create_file("flip_stats", 0444, dc->debugdir,
dc, &dbg_flip_stats_ops);
if (!retval)
goto remove_out;
if (dc->out_ops->get_connector_instance) {
char sor_path[CHAR_BUF_SIZE_MAX];
int ctrl_num = -1;
ctrl_num = dc->out_ops->get_connector_instance(dc);
if (ctrl_num < 0)
goto remove_out;
snprintf(sor_path, sizeof(sor_path),
"/sys/kernel/debug/tegra_sor%d", ctrl_num);
dc->sor_link = debugfs_create_symlink("sor", dc->debugdir, sor_path);
if (!dc->sor_link)
goto remove_out;
}
if (tegra_dc_is_nvdisplay()) {
/*Create directory for elements common to all DC heads*/
if (!dc->ndev->id) {
dc->debug_common_dir = debugfs_create_dir(
"tegradc.common",
NULL);
if (!dc->debug_common_dir)
goto remove_out;
for (i = 0; i < tegra_dc_get_numof_dispwindows(); i++) {
struct tegra_dc_win *win = &tegra_dc_windows[i];
snprintf(winname, sizeof(winname),
"tegra_win.%d", i);
windir = debugfs_create_dir(winname,
dc->debug_common_dir);
if (!windir)
goto remove_out;
retval = debugfs_create_file(
"color_expand_enable",
0444, windir, win,
&dbg_color_expand_enable_fops);
if (!retval)
goto remove_out;
windegammadir = debugfs_create_dir("degamma",
windir);
if (!windegammadir)
goto remove_out;
retval = debugfs_create_file("degamma",
0444, windegammadir, win,
&dbg_degamma_fops);
retval = debugfs_create_file(
"force_user_degamma",
0444, windegammadir, win,
&dbg_force_user_degamma_fops);
if (!retval)
goto remove_out;
wincscdir = debugfs_create_dir("csc", windir);
if (!wincscdir)
goto remove_out;
CREATE_NVDISP_WIN_CSC_SYSFS(r2r);
CREATE_NVDISP_WIN_CSC_SYSFS(g2r);
CREATE_NVDISP_WIN_CSC_SYSFS(b2r);
CREATE_NVDISP_WIN_CSC_SYSFS(const2r);
CREATE_NVDISP_WIN_CSC_SYSFS(r2g);
CREATE_NVDISP_WIN_CSC_SYSFS(g2g);
CREATE_NVDISP_WIN_CSC_SYSFS(b2g);
CREATE_NVDISP_WIN_CSC_SYSFS(const2g);
CREATE_NVDISP_WIN_CSC_SYSFS(r2b);
CREATE_NVDISP_WIN_CSC_SYSFS(g2b);
CREATE_NVDISP_WIN_CSC_SYSFS(b2b);
CREATE_NVDISP_WIN_CSC_SYSFS(const2b);
/* Create file to use user-defined CSC values as
* override over user-space CSC
*/
retval = debugfs_create_file("force_user_csc",
0444, wincscdir, win,
&nvdisp_win_csc_force_user_csc_fops);
if (!retval)
goto remove_out;
}
retval = debugfs_create_file("nvdisp_topology",
0444, dc->debug_common_dir, NULL,
&dbg_nvdisp_topology_fops);
if (!retval)
goto remove_out;
retval = tegra_nvdisp_create_imp_lock_debugfs(dc);
if (!retval)
goto remove_out;
}
}
if (tegra_dc_is_nvdisplay()) {
retval = debugfs_create_file("measure_latency", 0444,
dc->debugdir, dc, &dbg_measure_latency_ops);
if (!retval)
goto remove_out;
}
return;
remove_out:
dev_err(&dc->ndev->dev, "could not create debugfs\n");
tegra_dc_remove_debugfs(dc);
}
#undef CREATE_NVDISP_WIN_CSC_SYSFS
#else /* !CONFIG_DEBUGFS */
static inline void tegra_dc_create_debugfs(struct tegra_dc *dc) { };
static inline void tegra_dc_remove_debugfs(struct tegra_dc *dc) { };
#endif /* CONFIG_DEBUGFS */
s32 tegra_dc_calc_v_front_porch(struct tegra_dc_mode *mode,
int desired_fps)
{
int vfp = 0;
if (desired_fps > 0) {
int line = mode->h_sync_width + mode->h_back_porch +
mode->h_active + mode->h_front_porch;
int lines_per_frame = mode->pclk / line / desired_fps;
vfp = lines_per_frame - mode->v_sync_width -
mode->v_active - mode->v_back_porch;
}
return vfp;
}
static void tegra_dc_setup_vrr(struct tegra_dc *dc)
{
int lines_per_frame_max, lines_per_frame_min;
struct tegra_dc_mode *m;
struct tegra_vrr *vrr = dc->out->vrr;
if (!vrr)
return;
m = &dc->out->modes[dc->out->n_modes-1];
vrr->v_front_porch = m->v_front_porch;
vrr->v_back_porch = m->v_back_porch;
vrr->pclk = m->pclk;
if (vrr->vrr_min_fps > 0)
vrr->v_front_porch_max = tegra_dc_calc_v_front_porch(m,
vrr->vrr_min_fps);
vrr->vrr_max_fps =
(s32)div_s64(NSEC_PER_SEC, dc->frametime_ns);
vrr->v_front_porch_min = m->v_front_porch;
vrr->line_width = m->h_sync_width + m->h_back_porch +
m->h_active + m->h_front_porch;
vrr->lines_per_frame_common = m->v_sync_width +
m->v_back_porch + m->v_active;
lines_per_frame_max = vrr->lines_per_frame_common +
vrr->v_front_porch_max;
lines_per_frame_min = vrr->lines_per_frame_common +
vrr->v_front_porch_min;
if (lines_per_frame_max < 2*lines_per_frame_min) {
pr_err("max fps is less than 2 times min fps.\n");
return;
}
vrr->frame_len_max = vrr->line_width * lines_per_frame_max /
(m->pclk / 1000000);
vrr->frame_len_min = vrr->line_width * lines_per_frame_min /
(m->pclk / 1000000);
vrr->vfp_extend = vrr->v_front_porch_max;
vrr->vfp_shrink = vrr->v_front_porch_min;
vrr->frame_type = 0;
vrr->frame_delta_us = 0;
vrr->max_adj_pct = 50;
vrr->max_flip_pct = 20;
vrr->max_dcb = 20000;
vrr->max_inc_pct = 5;
vrr->dcb = 0;
vrr->frame_avg_pct = 75;
vrr->fluct_avg_pct = 75;
vrr->db_tolerance = 5000;
}
unsigned long tegra_dc_poll_register(struct tegra_dc *dc, u32 reg, u32 mask,
u32 exp_val, u32 poll_interval_us, u32 timeout_ms)
{
unsigned long timeout_jf = jiffies + msecs_to_jiffies(timeout_ms);
u32 reg_val = 0;
if (tegra_platform_is_vdk())
return 0;
do {
usleep_range(poll_interval_us, poll_interval_us << 1);
/* usleep_range(1000, 1500);*/
reg_val = tegra_dc_readl(dc, reg);
} while (((reg_val & mask) != exp_val) &&
time_after(timeout_jf, jiffies));
if ((reg_val & mask) == exp_val)
return 0; /* success */
dev_err(&dc->ndev->dev,
"dc_poll_register 0x%x: timeout\n", reg);
return jiffies - timeout_jf + 1;
}
void tegra_dc_enable_general_act(struct tegra_dc *dc)
{
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
if (tegra_dc_poll_register(dc, DC_CMD_STATE_CONTROL,
GENERAL_ACT_REQ, 0, 1,
TEGRA_DC_POLL_TIMEOUT_MS))
dev_err(&dc->ndev->dev,
"dc timeout waiting for DC to stop\n");
}
int tegra_dc_enable_update_and_act(struct tegra_dc *dc, u32 update_mask,
u32 act_req_mask)
{
tegra_dc_writel(dc, update_mask, DC_CMD_STATE_CONTROL);
tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); /* flush */
tegra_dc_writel(dc, act_req_mask, DC_CMD_STATE_CONTROL);
tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); /* flush */
return tegra_dc_poll_register(dc, DC_CMD_STATE_CONTROL, act_req_mask,
0, 1, TEGRA_DC_POLL_TIMEOUT_MS);
}
void tegra_dc_disable_disp_ctrl_mode(struct tegra_dc *dc)
{
tegra_dc_get(dc);
tegra_dc_writel(dc, DISP_CTRL_MODE_STOP, DC_CMD_DISPLAY_COMMAND);
tegra_dc_enable_general_act(dc);
tegra_dc_put(dc);
}
void tegra_dc_enable_disp_ctrl_mode(struct tegra_dc *dc)
{
tegra_dc_get(dc);
/* Enable DC */
if (dc->out->flags & TEGRA_DC_OUT_NVSR_MODE)
tegra_dc_writel(dc, DISP_CTRL_MODE_NC_DISPLAY,
DC_CMD_DISPLAY_COMMAND);
else
tegra_dc_writel(dc, DISP_CTRL_MODE_C_DISPLAY,
DC_CMD_DISPLAY_COMMAND);
tegra_dc_enable_general_act(dc);
tegra_dc_put(dc);
}
/* Set dc at the next available index in the tegra_dcs array. */
static int tegra_dc_set(struct tegra_dc *dc)
{
int ret = -EBUSY;
int i;
if (!dc)
return -EINVAL;
mutex_lock(&tegra_dc_lock);
for (i = 0; i < tegra_dc_get_numof_dispheads(); i++) {
if (tegra_dcs[i] == NULL) {
tegra_dcs[i] = dc;
ret = i;
break;
}
}
mutex_unlock(&tegra_dc_lock);
return ret;
}
/* Clear this dc from its current slot in the tegra_dcs array. */
static void tegra_dc_clear(struct tegra_dc *dc)
{
int i;
if (!dc)
return;
mutex_lock(&tegra_dc_lock);
for (i = 0; i < tegra_dc_get_numof_dispheads(); i++) {
if (tegra_dcs[i] == dc) {
tegra_dcs[i] = NULL;
break;
}
}
mutex_unlock(&tegra_dc_lock);
}
unsigned int tegra_dc_get_numof_reg_disps(void)
{
unsigned int idx;
unsigned int cnt = 0;
struct tegra_dc *dc;
mutex_lock(&tegra_dc_lock);
for (idx = 0; idx < tegra_dc_get_numof_dispheads(); idx++)
cnt += ((dc = tegra_dcs[idx]) != NULL) ? 1 : 0;
mutex_unlock(&tegra_dc_lock);
return cnt;
}
unsigned int tegra_dc_has_multiple_dc(void)
{
unsigned int idx;
unsigned int cnt = 0;
struct tegra_dc *dc;
mutex_lock(&tegra_dc_lock);
for (idx = 0; idx < tegra_dc_get_numof_dispheads(); idx++)
cnt += ((dc = tegra_dcs[idx]) != NULL && dc->enabled) ? 1 : 0;
mutex_unlock(&tegra_dc_lock);
return (cnt > 1);
}
static const char * const extcon_cable_strings[] = {
[TEGRA_DC_OUT_HDMI] = "HDMI",
[TEGRA_DC_OUT_DSI] = "DSI",
[TEGRA_DC_OUT_DP] = "DP"
};
static const int hdmi_extcon_cable_id[] = {
EXTCON_DISP_HDMI,
EXTCON_DISP_HDMI2
};
/* the map of dc->ctrl_num to the index of tegra_hdmi_extcon_cable_id[] */
unsigned long extcon_hdmi_dc_map[ARRAY_SIZE(hdmi_extcon_cable_id)] = {
[0 ... (ARRAY_SIZE(hdmi_extcon_cable_id) - 1)] = -1};
void tegra_dc_extcon_hpd_notify(struct tegra_dc *dc)
{
unsigned int cable = 0;
int i;
mutex_lock(&tegra_dc_extcon_lock);
if (dc && dc->out) {
switch (dc->out->type) {
case TEGRA_DC_OUT_HDMI:
cable = EXTCON_NONE;
for (i = 0; i < ARRAY_SIZE(hdmi_extcon_cable_id); i++) {
if (extcon_hdmi_dc_map[i] == dc->ctrl_num) {
cable = hdmi_extcon_cable_id[i];
break;
}
}
break;
case TEGRA_DC_OUT_DP:
cable = EXTCON_DISP_DP;
break;
case TEGRA_DC_OUT_DSI:
cable = EXTCON_DISP_DSIHPD;
break;
default:
mutex_unlock(&tegra_dc_extcon_lock);
return;
}
if (dc->connected) {
disp_state_extcon_switch_report(cable,
EXTCON_DISP_HPD_STATE_ENABLED);
pr_info("Extcon %s: HPD enabled\n",
extcon_cable_strings[dc->out->type]);
} else {
disp_state_extcon_switch_report(cable,
EXTCON_DISP_HPD_STATE_DISABLED);
pr_info("Extcon %s: HPD disabled\n",
extcon_cable_strings[dc->out->type]);
}
}
mutex_unlock(&tegra_dc_extcon_lock);
}
/* get the stride size of a window.
* return: stride size in bytes for window win. or 0 if unavailble. */
int tegra_dc_get_stride(struct tegra_dc *dc, unsigned win)
{
u32 stride;
if (!dc->enabled)
return 0;
WARN_ON(win > tegra_dc_get_numof_dispwindows());
mutex_lock(&dc->lock);
tegra_dc_get(dc);
if (tegra_dc_is_nvdisplay()) {
stride = tegra_nvdisp_get_linestride(dc, win);
} else {
tegra_dc_writel(dc, WINDOW_A_SELECT << win,
DC_CMD_DISPLAY_WINDOW_HEADER);
stride = tegra_dc_readl(dc, DC_WIN_LINE_STRIDE);
}
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return GET_LINE_STRIDE(stride);
}
EXPORT_SYMBOL(tegra_dc_get_stride);
struct tegra_dc *tegra_dc_get_dc(unsigned idx)
{
if (idx < tegra_dc_get_numof_dispheads())
return tegra_dcs[idx];
else
return NULL;
}
EXPORT_SYMBOL(tegra_dc_get_dc);
struct tegra_dc_win *tegra_dc_get_window(struct tegra_dc *dc, unsigned win)
{
if (win >= tegra_dc_get_numof_dispwindows() ||
!test_bit(win, &dc->valid_windows))
return NULL;
if (tegra_dc_is_nvdisplay())
return &tegra_dc_windows[win];
else
return &dc->windows[win];
}
EXPORT_SYMBOL(tegra_dc_get_window);
bool tegra_dc_get_connected(struct tegra_dc *dc)
{
return dc->connected;
}
EXPORT_SYMBOL(tegra_dc_get_connected);
bool tegra_dc_hpd(struct tegra_dc *dc)
{
int hpd = false;
int hotplug_state;
if (WARN_ON(!dc || !dc->out))
return false;
rmb();
hotplug_state = dc->out->hotplug_state;
if (hotplug_state != TEGRA_HPD_STATE_NORMAL) {
if (hotplug_state == TEGRA_HPD_STATE_FORCE_ASSERT)
return true;
if (hotplug_state == TEGRA_HPD_STATE_FORCE_DEASSERT)
return false;
}
if (!dc->hotplug_supported)
return true;
if (dc->out_ops && dc->out_ops->hpd_state)
hpd = dc->out_ops->hpd_state(dc);
if (dc->out->hotplug_report)
dc->out->hotplug_report(hpd);
return hpd;
}
EXPORT_SYMBOL(tegra_dc_hpd);
/* Used only on T21x */
static void tegra_dc_set_scaling_filter(struct tegra_dc *dc)
{
unsigned i;
unsigned v0 = 128;
unsigned v1 = 0;
/* linear horizontal and vertical filters */
for (i = 0; i < 16; i++) {
tegra_dc_writel(dc, (v1 << 16) | (v0 << 8),
DC_WIN_H_FILTER_P(i));
tegra_dc_writel(dc, v0,
DC_WIN_V_FILTER_P(i));
v0 -= 8;
v1 += 8;
}
}
static int _tegra_dc_config_frame_end_intr(struct tegra_dc *dc, bool enable)
{
tegra_dc_get(dc);
if (enable) {
atomic_inc(&dc->frame_end_ref);
tegra_dc_unmask_interrupt(dc, FRAME_END_INT);
} else if (!atomic_dec_return(&dc->frame_end_ref))
tegra_dc_mask_interrupt(dc, FRAME_END_INT);
tegra_dc_put(dc);
return 0;
}
static struct tegra_dc_cmu *tegra_dc_get_cmu(struct tegra_dc *dc)
{
if (dc->out->type == TEGRA_DC_OUT_FAKE_DP ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSIA ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSIB ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSI_GANGED ||
dc->out->type == TEGRA_DC_OUT_NULL) {
return &default_cmu;
}
if (dc->pdata->cmu && !dc->pdata->default_clr_space)
return dc->pdata->cmu;
else if (dc->pdata->cmu_adbRGB && dc->pdata->default_clr_space)
return dc->pdata->cmu_adbRGB;
else if (dc->out->type == TEGRA_DC_OUT_HDMI)
return &default_limited_cmu;
else
return &default_cmu;
}
static struct tegra_dc_nvdisp_cmu *tegra_dc_get_nvdisp_cmu(struct tegra_dc *dc)
{
if (dc->out->type == TEGRA_DC_OUT_FAKE_DP ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSIA ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSIB ||
dc->out->type == TEGRA_DC_OUT_FAKE_DSI_GANGED ||
dc->out->type == TEGRA_DC_OUT_NULL) {
tegra_nvdisp_get_default_cmu(&default_nvdisp_cmu);
return &default_nvdisp_cmu;
}
if (dc->pdata->cmu && !dc->pdata->default_clr_space) {
return dc->pdata->nvdisp_cmu;
} else if (dc->out->type == TEGRA_DC_OUT_HDMI) {
tegra_nvdisp_get_default_cmu(&default_limited_nvdisp_cmu);
return &default_limited_nvdisp_cmu;
}
tegra_nvdisp_get_default_cmu(&default_nvdisp_cmu);
return &default_nvdisp_cmu;
}
void tegra_dc_cmu_enable(struct tegra_dc *dc, bool cmu_enable)
{
dc->cmu_enabled = cmu_enable;
dc->pdata->cmu_enable = cmu_enable;
if (tegra_dc_is_nvdisplay()) {
tegra_dc_cache_nvdisp_cmu(dc, tegra_dc_get_nvdisp_cmu(dc));
tegra_nvdisp_update_cmu(dc, &dc->nvdisp_postcomp_lut);
} else if (tegra_dc_is_t21x()) {
tegra_dc_update_cmu(dc, tegra_dc_get_cmu(dc));
}
}
EXPORT_SYMBOL(tegra_dc_cmu_enable);
static void tegra_dc_cache_cmu(struct tegra_dc *dc,
struct tegra_dc_cmu *src_cmu)
{
if (&dc->cmu != src_cmu) /* ignore if it would require memmove() */
memcpy(&dc->cmu, src_cmu, sizeof(*src_cmu));
dc->cmu_dirty = true;
}
static void tegra_dc_set_cmu(struct tegra_dc *dc, struct tegra_dc_cmu *cmu)
{
u32 val;
u32 i;
for (i = 0; i < 256; i++) {
val = LUT1_ADDR(i) | LUT1_DATA(cmu->lut1[i]);
tegra_dc_writel(dc, val, DC_COM_CMU_LUT1);
}
tegra_dc_writel(dc, cmu->csc.krr, DC_COM_CMU_CSC_KRR);
tegra_dc_writel(dc, cmu->csc.kgr, DC_COM_CMU_CSC_KGR);
tegra_dc_writel(dc, cmu->csc.kbr, DC_COM_CMU_CSC_KBR);
tegra_dc_writel(dc, cmu->csc.krg, DC_COM_CMU_CSC_KRG);
tegra_dc_writel(dc, cmu->csc.kgg, DC_COM_CMU_CSC_KGG);
tegra_dc_writel(dc, cmu->csc.kbg, DC_COM_CMU_CSC_KBG);
tegra_dc_writel(dc, cmu->csc.krb, DC_COM_CMU_CSC_KRB);
tegra_dc_writel(dc, cmu->csc.kgb, DC_COM_CMU_CSC_KGB);
tegra_dc_writel(dc, cmu->csc.kbb, DC_COM_CMU_CSC_KBB);
for (i = 0; i < 960; i++) {
val = LUT2_ADDR(i) | LUT1_DATA(cmu->lut2[i]);
tegra_dc_writel(dc, val, DC_COM_CMU_LUT2);
}
dc->cmu_dirty = false;
}
static void _tegra_dc_update_cmu(struct tegra_dc *dc, struct tegra_dc_cmu *cmu)
{
u32 val;
if (!dc->cmu_enabled)
return;
tegra_dc_cache_cmu(dc, cmu);
if (dc->cmu_dirty) {
/* Disable CMU to avoid programming it while it is in use */
val = tegra_dc_readl(dc, DC_DISP_DISP_COLOR_CONTROL);
if (val & CMU_ENABLE) {
val &= ~CMU_ENABLE;
tegra_dc_writel(dc, val,
DC_DISP_DISP_COLOR_CONTROL);
val = GENERAL_ACT_REQ;
tegra_dc_writel(dc, val, DC_CMD_STATE_CONTROL);
/*TODO: Sync up with vsync */
mdelay(20);
}
dev_dbg(&dc->ndev->dev, "updating CMU cmu_dirty=%d\n",
dc->cmu_dirty);
tegra_dc_set_cmu(dc, &dc->cmu);
}
}
void _tegra_dc_cmu_enable(struct tegra_dc *dc, bool cmu_enable)
{
dc->cmu_enabled = cmu_enable;
_tegra_dc_update_cmu(dc, tegra_dc_get_cmu(dc));
tegra_dc_set_color_control(dc);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
}
EXPORT_SYMBOL(_tegra_dc_cmu_enable);
int tegra_dc_update_cmu(struct tegra_dc *dc, struct tegra_dc_cmu *cmu)
{
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return 0;
}
tegra_dc_get(dc);
_tegra_dc_update_cmu(dc, cmu);
tegra_dc_set_color_control(dc);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return 0;
}
EXPORT_SYMBOL(tegra_dc_update_cmu);
static int _tegra_dc_update_cmu_aligned(struct tegra_dc *dc,
struct tegra_dc_cmu *cmu,
bool force)
{
memcpy(&dc->cmu_shadow, cmu, sizeof(dc->cmu));
dc->cmu_shadow_dirty = true;
dc->cmu_shadow_force_update = dc->cmu_shadow_force_update || force;
_tegra_dc_config_frame_end_intr(dc, true);
return 0;
}
int tegra_dc_update_cmu_aligned(struct tegra_dc *dc, struct tegra_dc_cmu *cmu)
{
int ret;
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return 0;
}
ret = _tegra_dc_update_cmu_aligned(dc, cmu, false);
mutex_unlock(&dc->lock);
return ret;
}
EXPORT_SYMBOL(tegra_dc_update_cmu_aligned);
int tegra_dc_set_hdr(struct tegra_dc *dc, struct tegra_dc_hdr *hdr,
bool cache_dirty)
{
int ret;
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return 0;
}
trace_hdr_data_update(dc, hdr);
if (cache_dirty) {
dc->hdr.eotf = hdr->eotf;
dc->hdr.static_metadata_id = hdr->static_metadata_id;
memcpy(dc->hdr.static_metadata, hdr->static_metadata,
sizeof(dc->hdr.static_metadata));
} else if (dc->hdr.enabled == hdr->enabled) {
mutex_unlock(&dc->lock);
return 0;
}
dc->hdr.enabled = hdr->enabled;
dc->hdr_cache_dirty = true;
if (!dc->hdr.enabled)
memset(&dc->hdr, 0, sizeof(dc->hdr));
ret = _tegra_dc_config_frame_end_intr(dc, true);
mutex_unlock(&dc->lock);
return ret;
}
EXPORT_SYMBOL(tegra_dc_set_hdr);
/* disable_irq() blocks until handler completes, calling this function while
* holding dc->lock can deadlock. */
static inline void disable_dc_irq(const struct tegra_dc *dc)
{
disable_irq(dc->irq);
}
u32 tegra_dc_get_syncpt_id(struct tegra_dc *dc, int i)
{
struct tegra_dc_win *win = tegra_dc_get_window(dc, i);
BUG_ON(!win);
return win->syncpt.id;
}
EXPORT_SYMBOL(tegra_dc_get_syncpt_id);
static u32 tegra_dc_incr_syncpt_max_locked(struct tegra_dc *dc, int i)
{
u32 max;
struct tegra_dc_win *win = tegra_dc_get_window(dc, i);
BUG_ON(!win);
max = nvhost_syncpt_incr_max_ext(dc->ndev,
win->syncpt.id, ((dc->enabled) ? 1 : 0));
win->syncpt.max = max;
return max;
}
u32 tegra_dc_incr_syncpt_max(struct tegra_dc *dc, int i)
{
u32 max;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
max = tegra_dc_incr_syncpt_max_locked(dc, i);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return max;
}
void tegra_dc_incr_syncpt_min(struct tegra_dc *dc, int i, u32 val)
{
struct tegra_dc_win *win = tegra_dc_get_window(dc, i);
BUG_ON(!win);
mutex_lock(&dc->lock);
tegra_dc_get(dc);
while (win->syncpt.min < val) {
win->syncpt.min++;
nvhost_syncpt_cpu_incr_ext(dc->ndev, win->syncpt.id);
}
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
struct sync_fence *tegra_dc_create_fence(struct tegra_dc *dc, int i, u32 val)
{
struct nvhost_ctrl_sync_fence_info syncpt;
u32 id = tegra_dc_get_syncpt_id(dc, i);
syncpt.id = id;
syncpt.thresh = val;
return nvhost_sync_create_fence(
to_platform_device(dc->ndev->dev.parent),
&syncpt, 1, dev_name(&dc->ndev->dev));
}
void
tegra_dc_config_pwm(struct tegra_dc *dc, struct tegra_dc_pwm_params *cfg)
{
unsigned int ctrl;
unsigned long out_sel;
unsigned long cmd_state;
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return;
}
tegra_dc_get(dc);
ctrl = ((cfg->period << PM_PERIOD_SHIFT) |
(cfg->clk_div << PM_CLK_DIVIDER_SHIFT) |
cfg->clk_select);
/* The new value should be effected immediately */
cmd_state = tegra_dc_readl(dc, DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, (cmd_state | (1 << 2)), DC_CMD_STATE_ACCESS);
switch (cfg->which_pwm) {
case TEGRA_PWM_PM0:
/* Select the LM0 on PM0 */
out_sel = tegra_dc_readl(dc, DC_COM_PIN_OUTPUT_SELECT5);
out_sel &= ~(7 << 0);
out_sel |= (3 << 0);
tegra_dc_writel(dc, out_sel, DC_COM_PIN_OUTPUT_SELECT5);
tegra_dc_writel(dc, ctrl, DC_COM_PM0_CONTROL);
tegra_dc_writel(dc, cfg->duty_cycle, DC_COM_PM0_DUTY_CYCLE);
break;
case TEGRA_PWM_PM1:
/* Select the LM1 on PM1 */
out_sel = tegra_dc_readl(dc, DC_COM_PIN_OUTPUT_SELECT5);
out_sel &= ~(7 << 4);
out_sel |= (3 << 4);
tegra_dc_writel(dc, out_sel, DC_COM_PIN_OUTPUT_SELECT5);
tegra_dc_writel(dc, ctrl, DC_COM_PM1_CONTROL);
tegra_dc_writel(dc, cfg->duty_cycle, DC_COM_PM1_DUTY_CYCLE);
break;
default:
dev_err(&dc->ndev->dev, "Error: Need which_pwm\n");
break;
}
tegra_dc_writel(dc, cmd_state, DC_CMD_STATE_ACCESS);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
EXPORT_SYMBOL(tegra_dc_config_pwm);
void tegra_dc_set_out_pin_polars(struct tegra_dc *dc,
const struct tegra_dc_out_pin *pins,
const unsigned int n_pins)
{
unsigned int i;
int name;
int pol;
u32 pol1, pol3;
u32 set1, unset1;
u32 set3, unset3;
set1 = set3 = unset1 = unset3 = 0;
for (i = 0; i < n_pins; i++) {
name = (pins + i)->name;
pol = (pins + i)->pol;
/* set polarity by name */
switch (name) {
case TEGRA_DC_OUT_PIN_DATA_ENABLE:
if (pol == TEGRA_DC_OUT_PIN_POL_LOW)
set3 |= LSPI_OUTPUT_POLARITY_LOW;
else
unset3 |= LSPI_OUTPUT_POLARITY_LOW;
break;
case TEGRA_DC_OUT_PIN_H_SYNC:
if (pol == TEGRA_DC_OUT_PIN_POL_LOW)
set1 |= LHS_OUTPUT_POLARITY_LOW;
else
unset1 |= LHS_OUTPUT_POLARITY_LOW;
break;
case TEGRA_DC_OUT_PIN_V_SYNC:
if (pol == TEGRA_DC_OUT_PIN_POL_LOW)
set1 |= LVS_OUTPUT_POLARITY_LOW;
else
unset1 |= LVS_OUTPUT_POLARITY_LOW;
break;
case TEGRA_DC_OUT_PIN_PIXEL_CLOCK:
if (pol == TEGRA_DC_OUT_PIN_POL_LOW)
set1 |= LSC0_OUTPUT_POLARITY_LOW;
else
unset1 |= LSC0_OUTPUT_POLARITY_LOW;
break;
default:
printk("Invalid argument in function %s\n",
__FUNCTION__);
break;
}
}
pol1 = DC_COM_PIN_OUTPUT_POLARITY1_INIT_VAL;
pol3 = DC_COM_PIN_OUTPUT_POLARITY3_INIT_VAL;
pol1 |= set1;
pol1 &= ~unset1;
pol3 |= set3;
pol3 &= ~unset3;
tegra_dc_writel(dc, pol1, DC_COM_PIN_OUTPUT_POLARITY1);
tegra_dc_writel(dc, pol3, DC_COM_PIN_OUTPUT_POLARITY3);
}
static struct tegra_dc_mode *tegra_dc_get_override_mode(struct tegra_dc *dc)
{
unsigned long refresh;
if (((dc->out->type == TEGRA_DC_OUT_HDMI) ||
(dc->out->type == TEGRA_DC_OUT_DP)) &&
tegra_is_bl_display_initialized(dc->ctrl_num)) {
/* For seamless HDMI, read mode parameters from bootloader
* set DC configuration
*/
u32 val = 0;
struct tegra_dc_mode *mode = &override_disp_mode[dc->out->type];
struct clk *parent_clk = NULL;
if (tegra_dc_is_nvdisplay())
parent_clk = tegra_disp_clk_get(&dc->ndev->dev,
dc->out->parent_clk ? : "plld2");
else
parent_clk = clk_get_sys(NULL,
dc->out->parent_clk ? : "pll_d2");
memset(mode, 0, sizeof(struct tegra_dc_mode));
mode->pclk = clk_get_rate(parent_clk);
mode->rated_pclk = 0;
tegra_dc_get(dc);
/* {V,H}_REF_TO_SYNC do NOT exist on nvdisplay. */
if (!tegra_dc_is_nvdisplay()) {
val = tegra_dc_readl(dc, DC_DISP_REF_TO_SYNC);
mode->h_ref_to_sync = val & 0xffff;
mode->v_ref_to_sync = (val >> 16) & 0xffff;
}
val = tegra_dc_readl(dc, DC_DISP_SYNC_WIDTH);
mode->h_sync_width = val & 0xffff;
mode->v_sync_width = (val >> 16) & 0xffff;
val = tegra_dc_readl(dc, DC_DISP_BACK_PORCH);
mode->h_back_porch = val & 0xffff;
mode->v_back_porch = (val >> 16) & 0xffff;
val = tegra_dc_readl(dc, DC_DISP_FRONT_PORCH);
mode->h_front_porch = val & 0xffff;
mode->v_front_porch = (val >> 16) & 0xffff;
val = tegra_dc_readl(dc, DC_DISP_DISP_ACTIVE);
mode->h_active = val & 0xffff;
mode->v_active = (val >> 16) & 0xffff;
/* Check the freq setup by the BL, 59.94 or 60Hz
* If 59.94, vmode needs to be FB_VMODE_1000DIV1001
* for seamless
*/
refresh = tegra_dc_calc_refresh(mode);
if (refresh % 1000)
mode->vmode |= FB_VMODE_1000DIV1001;
/*
* Implicit contract between BL and us. If CMU is enabled,
* assume limited range. This sort of works because we know
* BL doesn't support YUV
*/
val = tegra_dc_readl(dc, DC_DISP_DISP_COLOR_CONTROL);
if (val & CMU_ENABLE)
mode->vmode |= FB_VMODE_LIMITED_RANGE;
tegra_dc_put(dc);
}
if (dc->out->type == TEGRA_DC_OUT_RGB ||
dc->out->type == TEGRA_DC_OUT_HDMI ||
dc->out->type == TEGRA_DC_OUT_DP ||
dc->out->type == TEGRA_DC_OUT_DSI ||
dc->out->type == TEGRA_DC_OUT_NULL)
return override_disp_mode[dc->out->type].pclk ?
&override_disp_mode[dc->out->type] : NULL;
else
return NULL;
}
static int tegra_dc_set_out(struct tegra_dc *dc, struct tegra_dc_out *out,
bool initialized)
{
struct tegra_dc_mode *mode = NULL;
int err = 0;
int i, free_slot = -1;
dc->out = out;
dc->hotplug_supported = tegra_dc_hotplug_supported(dc);
if (dc->out->type == TEGRA_DC_OUT_HDMI) {
for (i = 0; i < ARRAY_SIZE(hdmi_extcon_cable_id); i++) {
/* bail out if the map has already been done */
if (extcon_hdmi_dc_map[i] == dc->ctrl_num) {
free_slot = i;
break;
} else if (extcon_hdmi_dc_map[i] == -1) {
free_slot = i;
}
}
if (unlikely(free_slot == -1)) {
dev_err(&dc->ndev->dev,
"No free extcon HDMI slot for DC %d\n",
dc->ctrl_num);
} else {
extcon_hdmi_dc_map[free_slot] = dc->ctrl_num;
}
}
if (initialized) {
dc->initialized = false;
goto bypass_init_check;
}
if (((dc->out->type == TEGRA_DC_OUT_HDMI) ||
(dc->out->type == TEGRA_DC_OUT_DP)) &&
tegra_is_bl_display_initialized(dc->ctrl_num)) {
/*
* Bootloader enables clk and host1x in seamless
* usecase. Below extra reference accounts for it
*/
tegra_dc_get(dc);
}
/*
* This config enables seamless feature only for
* android usecase as a WAR for improper DSI initialization
* in bootloader for L4T usecase.
* Bug 200122858
*/
#ifdef CONFIG_ANDROID
/*
* Seamless supporting panels can work in seamless mode
* only if BL initializes DC/DSI. If not, panel should
* go with complete initialization.
*/
if (dc->out->type == TEGRA_DC_OUT_DSI &&
!tegra_is_bl_display_initialized(dc->ctrl_num)) {
dc->initialized = false;
} else if (dc->out->type == TEGRA_DC_OUT_DSI &&
tegra_is_bl_display_initialized(dc->ctrl_num)) {
/*
* In case of dsi->csi loopback support, force re-initialize
* all DSI controllers. So, set dc->initialized to false.
*/
if (dc->out->dsi->dsi_csi_loopback)
dc->initialized = false;
else
dc->initialized = true;
}
#endif
mode = tegra_dc_get_override_mode(dc);
bypass_init_check:
if (mode && tegra_is_bl_display_initialized(dc->ctrl_num)) {
tegra_dc_set_mode(dc, mode);
/*
* Bootloader should and should only pass disp_params if
* it has initialized display controller. Whenever we see
* override modes, we should skip things cause display resets.
*/
dev_info(&dc->ndev->dev, "Bootloader disp_param detected. "
"Detected mode: %dx%d (on %dx%dmm) pclk=%d\n",
dc->mode.h_active, dc->mode.v_active,
dc->out->h_size, dc->out->v_size,
dc->mode.pclk);
dc->initialized = true;
} else if (out->n_modes > 0) {
/* For VRR panels, default mode is first in the list,
* and native panel mode is the last.
* Initialization must occur using the native panel mode. */
if (dc->out->vrr) {
tegra_dc_set_mode(dc,
&dc->out->modes[dc->out->n_modes-1]);
tegra_dc_setup_vrr(dc);
} else
tegra_dc_set_mode(dc, &dc->out->modes[0]);
}
switch (out->type) {
case TEGRA_DC_OUT_HDMI:
#if defined(CONFIG_TEGRA_HDMI2_0)
dc->out_ops = &tegra_dc_hdmi2_0_ops;
#endif
break;
case TEGRA_DC_OUT_DSI:
case TEGRA_DC_OUT_FAKE_DSIA:
case TEGRA_DC_OUT_FAKE_DSIB:
case TEGRA_DC_OUT_FAKE_DSI_GANGED:
dc->out_ops = &tegra_dc_dsi_ops;
break;
#ifdef CONFIG_TEGRA_DP
case TEGRA_DC_OUT_FAKE_DP:
case TEGRA_DC_OUT_DP:
dc->out_ops = &tegra_dc_dp_ops;
break;
#endif
#ifdef CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT
case TEGRA_DC_OUT_NULL:
break;
#endif /*CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT*/
default:
dc->out_ops = NULL;
break;
}
if (tegra_dc_is_t21x())
tegra_dc_cache_cmu(dc, tegra_dc_get_cmu(dc));
if (dc->out_ops && dc->out_ops->init) {
err = dc->out_ops->init(dc);
if (err < 0) {
dc->out = NULL;
dc->out_ops = NULL;
dev_err(&dc->ndev->dev,
"Error: out->type:%d out_ops->init() failed. err=%d\n",
out->type, err);
return err;
}
}
return err;
}
void tegra_dc_out_destroy(struct tegra_dc *dc)
{
if (dc->out->hdmi_out) {
if (dc->out->hdmi_out->spd_infoframe)
devm_kfree(&dc->ndev->dev,
dc->out->hdmi_out->spd_infoframe);
dc->out->hdmi_out->spd_infoframe = NULL;
devm_kfree(&dc->ndev->dev, dc->out->hdmi_out);
}
dc->out->hdmi_out = NULL;
if (dc->out->dp_out)
devm_kfree(&dc->ndev->dev, dc->out->dp_out);
dc->out->dp_out = NULL;
if (dc->out->modes)
devm_kfree(&dc->ndev->dev, dc->out->modes);
dc->out->modes = NULL;
dc->out->n_modes = 0;
if (dc->out->vrr)
devm_kfree(&dc->ndev->dev, dc->out->vrr);
dc->out->vrr = NULL;
if (dc->out->out_pins)
devm_kfree(&dc->ndev->dev, dc->out->out_pins);
dc->out->out_pins = NULL;
tegra_panel_unregister_ops(dc->out);
}
int tegra_dc_get_head(const struct tegra_dc *dc)
{
if (dc)
return dc->ctrl_num;
return -EINVAL;
}
/* returns on error: -EINVAL
* on success: TEGRA_DC_OUT_RGB, TEGRA_DC_OUT_HDMI, ... */
int tegra_dc_get_out(const struct tegra_dc *dc)
{
if (dc && dc->out)
return dc->out->type;
return -EINVAL;
}
int tegra_dc_get_source_physical_address(u8 *phy_address)
{
int i;
struct tegra_dc *dc;
if (!phy_address)
return -EFAULT;
for (i = 0; i < tegra_dc_get_numof_dispheads(); i++) {
dc = tegra_dc_get_dc(i);
if (dc && dc->enabled && dc->edid && dc->out &&
(dc->out->type == TEGRA_DC_OUT_HDMI))
return tegra_edid_get_source_physical_address(dc->edid,
phy_address);
}
return -ENODEV;
}
bool tegra_dc_is_ext_panel(const struct tegra_dc *dc)
{
if (dc && dc->out)
return dc->out->is_ext_panel;
return false;
}
unsigned tegra_dc_get_out_height(const struct tegra_dc *dc)
{
unsigned height = 0;
if (dc->out) {
if (dc->out->height)
height = dc->out->height;
else if (dc->out->h_size && dc->out->v_size)
height = dc->out->v_size;
}
return height;
}
EXPORT_SYMBOL(tegra_dc_get_out_height);
unsigned tegra_dc_get_out_width(const struct tegra_dc *dc)
{
unsigned width = 0;
if (dc->out) {
if (dc->out->width)
width = dc->out->width;
else if (dc->out->h_size && dc->out->v_size)
width = dc->out->h_size;
}
return width;
}
EXPORT_SYMBOL(tegra_dc_get_out_width);
unsigned tegra_dc_get_out_max_pixclock(const struct tegra_dc *dc)
{
if (dc && dc->out)
return dc->out->max_pixclock;
else
return 0;
}
EXPORT_SYMBOL(tegra_dc_get_out_max_pixclock);
/*
* Check if mode's pixel clock requirement can be satisfied. Note that
* the pixclock value is in pico seconds.
*/
bool tegra_dc_valid_pixclock(const struct tegra_dc *dc,
const struct fb_videomode *mode)
{
unsigned max_pixclock = tegra_dc_get_out_max_pixclock(dc);
if (max_pixclock)
return mode->pixclock >= max_pixclock;
else
return true;
}
EXPORT_SYMBOL(tegra_dc_valid_pixclock);
void tegra_dc_sysfs_enable_crc(struct tegra_dc *dc)
{
u32 val;
if (dc->crc_ref_cnt.legacy) {
pr_err("CRC is already enabled.\n");
return;
}
dc->crc_ref_cnt.legacy = true;
mutex_lock(&dc->lock);
tegra_dc_get(dc);
val = CRC_ALWAYS_ENABLE | CRC_INPUT_DATA_ACTIVE_DATA |
CRC_ENABLE_ENABLE;
tegra_dc_writel(dc, val, DC_COM_CRC_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
/* Register a client of frame_end interrupt */
tegra_dc_config_frame_end_intr(dc, true);
}
void tegra_dc_sysfs_disable_crc(struct tegra_dc *dc)
{
if (!dc->crc_ref_cnt.legacy) {
pr_err("CRC is already disabled.\n");
return;
}
dc->crc_ref_cnt.legacy = false;
/* Unregister a client of frame_end interrupt */
tegra_dc_config_frame_end_intr(dc, false);
mutex_lock(&dc->lock);
tegra_dc_get(dc);
tegra_dc_writel(dc, 0x0, DC_COM_CRC_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
u32 tegra_dc_sysfs_read_checksum_latched(struct tegra_dc *dc)
{
int crc = 0;
if (!dc) {
pr_err("Failed to get dc: NULL parameter.\n");
goto crc_error;
}
if (!dc->crc_ref_cnt.legacy) {
pr_err("CRC is not enabled.\n");
goto crc_error;
}
/* If gated quitely return */
if (!tegra_dc_is_powered(dc))
return 0;
reinit_completion(&dc->crc_complete);
if (dc->crc_pending &&
wait_for_completion_interruptible(&dc->crc_complete)) {
pr_err("CRC read interrupted.\n");
goto crc_error;
}
mutex_lock(&dc->lock);
tegra_dc_get(dc);
crc = tegra_dc_readl(dc, DC_COM_CRC_CHECKSUM_LATCHED);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
crc_error:
return crc;
}
EXPORT_SYMBOL(tegra_dc_sysfs_read_checksum_latched);
bool tegra_dc_windows_are_dirty(struct tegra_dc *dc, u32 win_act_req_mask)
{
u32 val;
if (tegra_platform_is_vdk())
return false;
val = tegra_dc_readl(dc, DC_CMD_STATE_CONTROL);
if (val & (win_act_req_mask))
return true;
return false;
}
static inline void __maybe_unused
enable_dc_irq(const struct tegra_dc *dc)
{
if (tegra_platform_is_fpga())
/* Always disable DC interrupts on FPGA. */
disable_irq(dc->irq);
else
enable_irq(dc->irq);
}
/* assumes dc->lock is already taken. */
static void _tegra_dc_vsync_enable(struct tegra_dc *dc)
{
int vsync_irq;
if (test_bit(V_BLANK_USER, &dc->vblank_ref_count))
return; /* already set, nothing needs to be done */
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
vsync_irq = MSF_INT;
else
vsync_irq = V_BLANK_INT;
tegra_dc_hold_dc_out(dc);
set_bit(V_BLANK_USER, &dc->vblank_ref_count);
tegra_dc_unmask_interrupt(dc, vsync_irq);
}
int tegra_dc_vsync_enable(struct tegra_dc *dc)
{
mutex_lock(&dc->lock);
if (dc->enabled) {
_tegra_dc_vsync_enable(dc);
mutex_unlock(&dc->lock);
return 0;
}
mutex_unlock(&dc->lock);
return 1;
}
/* assumes dc->lock is already taken. */
static void _tegra_dc_vsync_disable(struct tegra_dc *dc)
{
int vsync_irq;
if (!test_bit(V_BLANK_USER, &dc->vblank_ref_count))
return; /* already clear, nothing needs to be done */
if (dc->out->type == TEGRA_DC_OUT_DSI)
vsync_irq = MSF_INT;
else
vsync_irq = V_BLANK_INT;
clear_bit(V_BLANK_USER, &dc->vblank_ref_count);
if (!dc->vblank_ref_count)
tegra_dc_mask_interrupt(dc, vsync_irq);
tegra_dc_release_dc_out(dc);
}
void tegra_dc_vsync_disable(struct tegra_dc *dc)
{
mutex_lock(&dc->lock);
_tegra_dc_vsync_disable(dc);
mutex_unlock(&dc->lock);
}
bool tegra_dc_has_vsync(struct tegra_dc *dc)
{
return true;
}
/* assumes dc->lock is already taken. */
static void _tegra_dc_user_vsync_enable(struct tegra_dc *dc, bool enable)
{
if (enable) {
dc->out->user_needs_vblank++;
init_completion(&dc->out->user_vblank_comp);
_tegra_dc_vsync_enable(dc);
} else {
_tegra_dc_vsync_disable(dc);
if (dc->out->user_needs_vblank > 0)
dc->out->user_needs_vblank--;
}
}
int tegra_dc_wait_for_vsync(struct tegra_dc *dc)
{
unsigned long timeout_ms;
unsigned long refresh; /* in 1000th Hz */
int ret;
mutex_lock(&dc->lp_lock);
mutex_lock(&dc->lock);
if (!dc->enabled) {
ret = -ENOTTY;
goto out;
}
refresh = tegra_dc_calc_refresh(&dc->mode);
if (refresh == 0) {
dev_err(&dc->ndev->dev, "dc:refresh is %lu\n", refresh);
ret = -ERANGE;
goto out;
}
/* time out if waiting took more than 2 frames */
timeout_ms = DIV_ROUND_UP(2 * 1000000, refresh);
_tegra_dc_user_vsync_enable(dc, true);
mutex_unlock(&dc->lock);
ret = wait_for_completion_interruptible_timeout(
&dc->out->user_vblank_comp, msecs_to_jiffies(timeout_ms));
mutex_lock(&dc->lock);
_tegra_dc_user_vsync_enable(dc, false);
out:
mutex_unlock(&dc->lock);
mutex_unlock(&dc->lp_lock);
return ret;
}
int _tegra_dc_wait_for_frame_end(struct tegra_dc *dc,
u32 timeout_ms)
{
int ret;
reinit_completion(&dc->frame_end_complete);
tegra_dc_get(dc);
tegra_dc_flush_interrupt(dc, FRAME_END_INT);
/* unmask frame end interrupt */
_tegra_dc_config_frame_end_intr(dc, true);
ret = wait_for_completion_interruptible_timeout(
&dc->frame_end_complete,
msecs_to_jiffies(timeout_ms));
_tegra_dc_config_frame_end_intr(dc, false);
tegra_dc_put(dc);
return ret;
}
void tegra_dc_set_act_vfp(struct tegra_dc *dc, int vfp)
{
WARN_ON(!mutex_is_locked(&dc->lock));
WARN_ON(!tegra_dc_is_nvdisplay() && vfp < dc->mode.v_ref_to_sync + 1);
/* It's very unlikely that active vfp will need to
* be changed outside of vrr context */
WARN_ON(!dc->out->vrr || !dc->out->vrr->capability);
tegra_dc_writel(dc, WRITE_MUX_ACTIVE | READ_MUX_ACTIVE,
DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, dc->mode.h_front_porch |
(vfp << 16), DC_DISP_FRONT_PORCH);
tegra_dc_writel(dc, WRITE_MUX_ASSEMBLY | READ_MUX_ASSEMBLY,
DC_CMD_STATE_ACCESS);
}
static void tegra_dc_vrr_extend_vfp(struct tegra_dc *dc)
{
struct tegra_vrr *vrr = dc->out->vrr;
if (!vrr || !vrr->capability)
return;
if (!vrr->enable)
return;
tegra_dc_set_act_vfp(dc, MAX_VRR_V_FRONT_PORCH);
}
int tegra_dc_get_v_count(struct tegra_dc *dc)
{
u32 value;
value = tegra_dc_readl(dc, DC_DISP_DISPLAY_DBG_TIMING);
return (value & DBG_V_COUNT_MASK) >> DBG_V_COUNT_SHIFT;
}
static void tegra_dc_vrr_get_ts(struct tegra_dc *dc)
{
struct timespec time_now;
struct tegra_vrr *vrr = dc->out->vrr;
if (!vrr || !vrr->capability ||
(!vrr->enable && !vrr->lastenable))
return;
getnstimeofday(&time_now);
vrr->fe_time_us = (s64)time_now.tv_sec * 1000000 +
time_now.tv_nsec / 1000;
vrr->v_count = tegra_dc_get_v_count(dc);
}
static void tegra_dc_vrr_sec(struct tegra_dc *dc)
{
struct tegra_vrr *vrr = dc->out->vrr;
if (!vrr || !vrr->capability)
return;
if (!vrr->enable && !vrr->fe_intr_req)
return;
if (tegra_dc_is_nvdisplay())
cancel_delayed_work_sync(&dc->vrr_work);
/* Decrement frame end interrupt refcount previously
requested by secure library */
if (vrr->fe_intr_req) {
_tegra_dc_config_frame_end_intr(dc, false);
vrr->fe_intr_req = 0;
}
#if defined(CONFIG_TEGRA_HDMIVRR) && (defined(CONFIG_TRUSTED_LITTLE_KERNEL) || defined(CONFIG_OTE_TRUSTY))
if (te_is_secos_dev_enabled())
tegra_hdmivrr_te_vrr_sec(vrr);
#endif
/* Increment frame end interrupt refcount requested
by secure library */
if (vrr->fe_intr_req)
_tegra_dc_config_frame_end_intr(dc, true);
if (tegra_dc_is_nvdisplay()) {
if (vrr->insert_frame)
schedule_delayed_work(&dc->vrr_work,
msecs_to_jiffies(vrr->insert_frame/1000));
}
}
static void tegra_dc_vblank(struct work_struct *work)
{
struct tegra_dc *dc = container_of(work, struct tegra_dc, vblank_work);
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return;
}
tegra_dc_get(dc);
/* Clear the V_BLANK_FLIP bit of vblank ref-count if update is clean. */
if (!tegra_dc_windows_are_dirty(dc, WIN_ALL_ACT_REQ))
clear_bit(V_BLANK_FLIP, &dc->vblank_ref_count);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
#define CSC_UPDATE_IF_CHANGED(entry, ENTRY) do { \
if (cmu_active->csc.entry != cmu_shadow->csc.entry || \
dc->cmu_shadow_force_update) { \
cmu_active->csc.entry = cmu_shadow->csc.entry; \
tegra_dc_writel(dc, \
cmu_active->csc.entry, \
DC_COM_CMU_CSC_##ENTRY); \
} \
} while (0)
static void _tegra_dc_handle_hdr(struct tegra_dc *dc)
{
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return;
}
tegra_dc_get(dc);
if (dc->out_ops->set_hdr)
dc->out_ops->set_hdr(dc);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return;
}
static void tegra_dc_frame_end(struct work_struct *work)
{
struct tegra_dc *dc = container_of(work,
struct tegra_dc, frame_end_work);
u32 val;
u32 i;
if (tegra_dc_is_t21x()) {
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return;
}
tegra_dc_get(dc);
if (dc->cmu_shadow_dirty) {
struct tegra_dc_cmu *cmu_active = &dc->cmu;
struct tegra_dc_cmu *cmu_shadow = &dc->cmu_shadow;
for (i = 0; i < 256; i++) {
if (cmu_active->lut1[i] != cmu_shadow->lut1[i]
||
dc->cmu_shadow_force_update) {
cmu_active->lut1[i] =
cmu_shadow->lut1[i];
val = LUT1_ADDR(i) |
LUT1_DATA(cmu_shadow->lut1[i]);
tegra_dc_writel(dc, val,
DC_COM_CMU_LUT1);
}
}
CSC_UPDATE_IF_CHANGED(krr, KRR);
CSC_UPDATE_IF_CHANGED(kgr, KGR);
CSC_UPDATE_IF_CHANGED(kbr, KBR);
CSC_UPDATE_IF_CHANGED(krg, KRG);
CSC_UPDATE_IF_CHANGED(kgg, KGG);
CSC_UPDATE_IF_CHANGED(kbg, KBG);
CSC_UPDATE_IF_CHANGED(krb, KRB);
CSC_UPDATE_IF_CHANGED(kgb, KGB);
CSC_UPDATE_IF_CHANGED(kbb, KBB);
for (i = 0; i < 960; i++)
if (cmu_active->lut2[i] != cmu_shadow->lut2[i]
||
dc->cmu_shadow_force_update) {
cmu_active->lut2[i] =
cmu_shadow->lut2[i];
val = LUT2_ADDR(i) |
LUT2_DATA(cmu_active->lut2[i]);
tegra_dc_writel(dc, val,
DC_COM_CMU_LUT2);
}
dc->cmu_shadow_dirty = false;
dc->cmu_shadow_force_update = false;
_tegra_dc_config_frame_end_intr(dc, false);
}
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
if (dc->hdr_cache_dirty) {
_tegra_dc_handle_hdr(dc);
_tegra_dc_config_frame_end_intr(dc, false);
dc->hdr_cache_dirty = false;
}
return;
}
static void tegra_dc_one_shot_worker(struct work_struct *work)
{
struct tegra_dc *dc = container_of(
to_delayed_work(work), struct tegra_dc, one_shot_work);
mutex_lock(&dc->lock);
/* memory client has gone idle */
tegra_dc_clear_bandwidth(dc);
if (dc->out_ops && dc->out_ops->idle) {
tegra_dc_io_start(dc);
dc->out_ops->idle(dc);
tegra_dc_io_end(dc);
}
mutex_unlock(&dc->lock);
}
/* return an arbitrarily large number if count overflow occurs.
* make it a nice base-10 number to show up in stats output */
static u64 tegra_dc_underflow_count(struct tegra_dc *dc, unsigned reg)
{
unsigned count = tegra_dc_readl(dc, reg);
tegra_dc_writel(dc, 0, reg);
return ((count & 0x80000000) == 0) ? count : 10000000000ll;
}
static void tegra_dc_underflow_handler(struct tegra_dc *dc)
{
if (tegra_dc_is_t21x()) {
const u32 masks[] = {
WIN_A_UF_INT,
WIN_B_UF_INT,
WIN_C_UF_INT,
WIN_D_UF_INT,
HC_UF_INT,
WIN_T_UF_INT,
};
int i;
dc->stats.underflows++;
if (dc->underflow_mask & WIN_A_UF_INT)
dc->stats.underflows_a += tegra_dc_underflow_count(dc,
DC_WINBUF_AD_UFLOW_STATUS);
if (dc->underflow_mask & WIN_B_UF_INT)
dc->stats.underflows_b += tegra_dc_underflow_count(dc,
DC_WINBUF_BD_UFLOW_STATUS);
if (dc->underflow_mask & WIN_C_UF_INT)
dc->stats.underflows_c += tegra_dc_underflow_count(dc,
DC_WINBUF_CD_UFLOW_STATUS);
if (dc->underflow_mask & HC_UF_INT)
dc->stats.underflows_h += tegra_dc_underflow_count(dc,
DC_WINBUF_HD_UFLOW_STATUS);
if (dc->underflow_mask & WIN_D_UF_INT)
dc->stats.underflows_d += tegra_dc_underflow_count(dc,
DC_WINBUF_DD_UFLOW_STATUS);
if (dc->underflow_mask & WIN_T_UF_INT)
dc->stats.underflows_t += tegra_dc_underflow_count(dc,
DC_WINBUF_TD_UFLOW_STATUS);
/* Check for any underflow reset conditions */
for_each_set_bit(i, &dc->valid_windows, DC_N_WINDOWS) {
struct tegra_dc_win *win = tegra_dc_get_window(dc, i);
if (WARN_ONCE(i >= ARRAY_SIZE(masks),
"underflow stats unsupported"))
/* bail if the table above is missing entries */
break;
if (!masks[i])
continue; /* skip empty entries */
if (dc->underflow_mask & masks[i])
win->underflows++;
else
win->underflows = 0;
}
} else {
tegra_nvdisp_underflow_handler(dc);
}
/* Clear the underflow mask now that we've checked it. */
tegra_dc_writel(dc, dc->underflow_mask, DC_CMD_INT_STATUS);
dc->underflow_mask = 0;
tegra_dc_unmask_interrupt(dc, ALL_UF_INT());
trace_underflow(dc);
}
static void tegra_dc_vpulse2(struct work_struct *work)
{
struct tegra_dc *dc = container_of(work, struct tegra_dc, vpulse2_work);
mutex_lock(&dc->lock);
if (!dc->enabled) {
mutex_unlock(&dc->lock);
return;
}
tegra_dc_get(dc);
/* Clear the V_PULSE2_FLIP if no update */
if (!tegra_dc_windows_are_dirty(dc, WIN_ALL_ACT_REQ))
clear_bit(V_PULSE2_FLIP, &dc->vpulse2_ref_count);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
static void tegra_dc_process_vblank(struct tegra_dc *dc)
{
/* pending user vblank, so wakeup */
if (dc->out->user_needs_vblank) {
dc->out->user_needs_vblank = false;
complete(&dc->out->user_vblank_comp);
}
if (test_bit(V_BLANK_USER, &dc->vblank_ref_count)) {
u64 timestamp = tegra_dc_get_scanline_timestamp(dc,
dc->mode_metadata.vblank_lines);
if (unlikely(!timestamp))
dev_err(&dc->ndev->dev, "Invalid Timestamp Value\n");
tegra_dc_ext_process_vblank(dc->ndev->id, timestamp);
}
}
int tegra_dc_config_frame_end_intr(struct tegra_dc *dc, bool enable)
{
int ret;
mutex_lock(&dc->lock);
ret = _tegra_dc_config_frame_end_intr(dc, enable);
mutex_unlock(&dc->lock);
return ret;
}
static void tegra_dc_one_shot_irq(struct tegra_dc *dc, unsigned long status)
{
if (status & MSF_INT)
tegra_dc_process_vblank(dc);
if (status & V_BLANK_INT) {
/* Sync up windows. */
tegra_dc_trigger_windows(dc);
/* Check COMMON_ACT_REQ. */
if (tegra_dc_handle_common_channel_promotion(dc))
clear_bit(V_BLANK_IMP, &dc->vblank_ref_count);
/* Schedule any additional bottom-half vblank actvities. */
queue_work(system_freezable_wq, &dc->vblank_work);
}
if (status & FRAME_END_INT) {
if (atomic_read(&dc->crc_ref_cnt.global))
tegra_dc_crc_process(dc);
/* Mark the frame_end as complete. */
dc->crc_pending = false;
if (!completion_done(&dc->frame_end_complete))
complete(&dc->frame_end_complete);
if (!completion_done(&dc->crc_complete))
complete(&dc->crc_complete);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
tegra_dc_put(dc);
queue_work(system_freezable_wq, &dc->frame_end_work);
}
if (status & V_PULSE2_INT) {
if (test_bit(V_PULSE2_LATENCY_MSRMNT, &dc->vpulse2_ref_count))
tegra_dc_collect_latency_data(dc);
queue_work(system_freezable_wq, &dc->vpulse2_work);
}
}
static void tegra_dc_continuous_irq(struct tegra_dc *dc, unsigned long status)
{
/* Schedule any additional bottom-half vblank actvities. */
if (status & V_BLANK_INT)
queue_work(system_freezable_wq, &dc->vblank_work);
if (status & (V_BLANK_INT | MSF_INT)) {
if (dc->out->user_needs_vblank) {
dc->out->user_needs_vblank = false;
complete(&dc->out->user_vblank_comp);
}
tegra_dc_process_vblank(dc);
}
if (status & FRAME_END_INT) {
struct timespec tm;
ktime_get_ts(&tm);
dc->frame_end_timestamp = timespec_to_ns(&tm);
wake_up(&dc->timestamp_wq);
if (!tegra_dc_windows_are_dirty(dc, WIN_ALL_ACT_REQ)) {
if (dc->out->type == TEGRA_DC_OUT_DSI) {
tegra_dc_vrr_get_ts(dc);
tegra_dc_vrr_sec(dc);
} else
tegra_dc_vrr_extend_vfp(dc);
}
if (atomic_read(&dc->crc_ref_cnt.global))
tegra_dc_crc_process(dc);
/* Mark the frame_end as complete. */
if (!completion_done(&dc->frame_end_complete))
complete(&dc->frame_end_complete);
if (!completion_done(&dc->crc_complete))
complete(&dc->crc_complete);
if (dc->frm_lck_info.frame_lock_enable &&
((dc->out->type == TEGRA_DC_OUT_HDMI) ||
(dc->out->type == TEGRA_DC_OUT_DP) ||
(dc->out->type == TEGRA_DC_OUT_FAKE_DP))) {
mutex_unlock(&dc->lock);
tegra_dc_common_handle_flip_lock_error(dc);
mutex_lock(&dc->lock);
} else {
tegra_dc_trigger_windows(dc);
}
/* Check COMMON_ACT_REQ. */
if (tegra_dc_handle_common_channel_promotion(dc))
_tegra_dc_config_frame_end_intr(dc, false);
queue_work(system_freezable_wq, &dc->frame_end_work);
}
if (status & V_PULSE2_INT) {
if (test_bit(V_PULSE2_LATENCY_MSRMNT, &dc->vpulse2_ref_count))
tegra_dc_collect_latency_data(dc);
queue_work(system_freezable_wq, &dc->vpulse2_work);
}
}
/* XXX: Not sure if we limit look ahead to 1 frame */
bool tegra_dc_is_within_n_vsync(struct tegra_dc *dc, s64 ts)
{
BUG_ON(!dc->frametime_ns);
return ((ts - dc->frame_end_timestamp) < dc->frametime_ns);
}
bool tegra_dc_does_vsync_separate(struct tegra_dc *dc, s64 new_ts, s64 old_ts)
{
BUG_ON(!dc->frametime_ns);
return (((new_ts - old_ts) > dc->frametime_ns)
|| (div_s64((new_ts - dc->frame_end_timestamp), dc->frametime_ns)
!= div_s64((old_ts - dc->frame_end_timestamp),
dc->frametime_ns)));
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0))
inline u64 tegra_dc_get_tsc_time(void)
{
struct timecounter *tc;
cycle_t value;
u64 frac = 0;
tc = arch_timer_get_timecounter();
if (tc) {
const struct cyclecounter *cc = tc->cc;
value = cc->read(cc);
return cyclecounter_cyc2ns(cc, value, 0, &frac);
}
return 0;
}
#else
inline u64 tegra_dc_get_tsc_time(void)
{
/* TBD: Add support for kernel 4.9 */
/* arch_timer_get_timecounter() doesn't exist in 4.9 */
return 0;
}
#endif
static inline void tegra_dc_scanline_trace(struct tegra_dc *dc)
{
int current_scanline, vp3_scanline;
int current_frame, diff_frames;
int vblank_diff_lines, vp3_diff_lines;
u64 vblank_delta_time, vp3_delta_time;
u64 curr_timestamp, vblank_timestamp, vp3_timestamp;
/* TBD: Currently, if this function is delayed by greater than
* one frame duration, then prints for those frames would be skipped.
*/
/* Get current TSC time & raster position */
curr_timestamp = tegra_dc_get_tsc_time();
current_scanline = tegra_dc_get_v_count(dc);
current_frame = tegra_dc_readl(dc, DC_COM_RG_DPCA) >> 16;
/* TBD: Extend for more than one programmable scanline. */
/* Is there a programmed scanline ? */
vp3_scanline = tegra_dc_ext_get_scanline(dc->ext);
/* Compare current scanline to actual event occurrence */
if (current_scanline >= dc->mode_metadata.vblank_lines &&
current_scanline <= dc->mode_metadata.vtotal_lines) {
/* If control still in old frame; where vblank occurred */
vblank_diff_lines = current_scanline -
dc->mode_metadata.vblank_lines;
if (vp3_scanline >= 0)
vp3_diff_lines = current_scanline - vp3_scanline;
diff_frames = 0;
} else {
/* If in next frame */
vblank_diff_lines = current_scanline + dc->mode.v_front_porch;
if (vp3_scanline >= 0)
vp3_diff_lines = (dc->mode_metadata.vtotal_lines
- vp3_scanline) + current_scanline;
diff_frames = -1;
}
/* Calculate time delta & accurate timestamps */
vblank_delta_time = (u64)vblank_diff_lines *
dc->mode_metadata.line_in_nsec;
vblank_timestamp = curr_timestamp - vblank_delta_time;
if (vp3_scanline >= 0) {
vp3_delta_time = (u64)vp3_diff_lines *
dc->mode_metadata.line_in_nsec;
vp3_timestamp = curr_timestamp - vp3_delta_time;
}
/* Write to ftrace buffer */
if (vp3_scanline >= 0) {
trace_display_scanline(dc->ctrl_num, vp3_scanline,
current_frame+diff_frames, vp3_timestamp);
}
/* Write -1 for line number to indicate its vblank line # */
trace_display_scanline(dc->ctrl_num, -1,
current_frame+diff_frames, vblank_timestamp);
}
static irqreturn_t tegra_dc_irq(int irq, void *ptr)
{
struct tegra_dc *dc = ptr;
unsigned long status;
unsigned long underflow_mask;
u32 val;
int need_disable = 0;
if (tegra_dc_is_t21x() && tegra_platform_is_fpga())
return IRQ_NONE;
mutex_lock(&dc->lock);
if (!tegra_dc_is_powered(dc)) {
mutex_unlock(&dc->lock);
return IRQ_HANDLED;
}
tegra_dc_get(dc);
if (!dc->enabled || !nvhost_module_powered_ext(dc->ndev)) {
dev_dbg(&dc->ndev->dev, "IRQ when DC not powered!\n");
status = tegra_dc_readl(dc, DC_CMD_INT_STATUS);
tegra_dc_writel(dc, status, DC_CMD_INT_STATUS);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
return IRQ_HANDLED;
}
/* clear all status flags except underflow, save those for the worker */
status = tegra_dc_readl(dc, DC_CMD_INT_STATUS);
tegra_dc_writel(dc, status & ~ALL_UF_INT(), DC_CMD_INT_STATUS);
val = tegra_dc_readl(dc, DC_CMD_INT_MASK);
tegra_dc_writel(dc, val & ~ALL_UF_INT(), DC_CMD_INT_MASK);
/*
* Overlays can get thier internal state corrupted during and underflow
* condition. The only way to fix this state is to reset the DC.
* if we get 4 consecutive frames with underflows, assume we're
* hosed and reset.
*/
underflow_mask = status & ALL_UF_INT();
/* Check underflow */
if (underflow_mask) {
dc->underflow_mask |= underflow_mask;
schedule_delayed_work(&dc->underflow_work,
msecs_to_jiffies(1));
}
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
tegra_dc_one_shot_irq(dc, status);
else
tegra_dc_continuous_irq(dc, status);
/* Trace scanlines before mode change takes effect below */
if (status & V_BLANK_INT) {
/* Do any extra work only if tracepoint enabled */
if (trace_display_scanline_enabled())
tegra_dc_scanline_trace(dc);
}
/* update video mode if it has changed since the last frame */
if (status & (FRAME_END_INT | V_BLANK_INT))
if (tegra_dc_update_mode(dc))
need_disable = 1; /* force display off on error */
if (status & FRAME_END_INT) {
dc->dbg_fe_count++;
if (dc->disp_active_dirty) {
tegra_dc_writel(dc, dc->mode.h_active |
(dc->mode.v_active << 16), DC_DISP_DISP_ACTIVE);
tegra_dc_writel(dc,
GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
dc->disp_active_dirty = false;
}
}
if (status & V_BLANK_INT)
trace_display_vblank(dc->ctrl_num,
tegra_dc_readl(dc, DC_COM_RG_DPCA) >> 16);
tegra_dc_put(dc);
#ifdef TEGRA_DC_USR_SHARED_IRQ
/* user shared display ISR call-back */
if (dc->isr_usr_cb)
dc->isr_usr_cb(dc->ctrl_num, status, dc->isr_usr_pdt);
#endif /* TEGRA_DC_USR_SHARED_IRQ */
mutex_unlock(&dc->lock);
if (need_disable)
tegra_dc_disable_irq_ops(dc, true);
return IRQ_HANDLED;
}
void tegra_dc_set_color_control(struct tegra_dc *dc)
{
u32 color_control;
switch (dc->out->depth) {
case 3:
color_control = BASE_COLOR_SIZE111;
break;
case 6:
color_control = BASE_COLOR_SIZE222;
break;
case 8:
color_control = BASE_COLOR_SIZE332;
break;
case 9:
color_control = BASE_COLOR_SIZE333;
break;
case 12:
color_control = BASE_COLOR_SIZE444;
break;
case 15:
color_control = BASE_COLOR_SIZE555;
break;
case 16:
color_control = BASE_COLOR_SIZE565;
break;
case 18:
color_control = BASE_COLOR_SIZE666;
break;
default:
color_control = BASE_COLOR_SIZE888;
break;
}
switch (dc->out->dither) {
case TEGRA_DC_UNDEFINED_DITHER:
case TEGRA_DC_DISABLE_DITHER:
color_control |= DITHER_CONTROL_DISABLE;
break;
case TEGRA_DC_ORDERED_DITHER:
color_control |= DITHER_CONTROL_ORDERED;
break;
#ifdef CONFIG_TEGRA_DC_TEMPORAL_DITHER
case TEGRA_DC_TEMPORAL_DITHER:
color_control |= DITHER_CONTROL_TEMPORAL;
break;
#else
case TEGRA_DC_ERRDIFF_DITHER:
/* The line buffer for error-diffusion dither is limited
* to 1280 pixels per line. This limits the maximum
* horizontal active area size to 1280 pixels when error
* diffusion is enabled.
*/
BUG_ON(dc->mode.h_active > 1280);
color_control |= DITHER_CONTROL_ERRDIFF;
break;
#endif
default:
dev_err(&dc->ndev->dev, "Error: Unsupported dithering mode\n");
}
if (tegra_dc_is_t21x()) {
if (dc->cmu_enabled)
color_control |= CMU_ENABLE;
}
tegra_dc_writel(dc, color_control, DC_DISP_DISP_COLOR_CONTROL);
}
/*
* Due to the limitations in DSC architecture, program DSC block with predefined
* values.
*/
void tegra_dc_dsc_init(struct tegra_dc *dc)
{
struct tegra_dc_mode *mode = &dc->mode;
u32 val;
u32 slice_width, slice_height, chunk_size, hblank;
u32 min_rate_buf_size, num_xtra_mux_bits, hrdelay;
u32 initial_offset, final_offset;
u32 initial_xmit_delay, initial_dec_delay;
u32 initial_scale_value, final_scale;
u32 scale_dec_interval, scale_inc_interval;
u32 groups_per_line, total_groups, first_line_bpg_offset;
u32 nfl_bpg_offset, slice_bpg_offset;
u32 rc_model_size = DSC_DEF_RC_MODEL_SIZE;
u32 delay_in_slice, output_delay, wrap_output_delay;
u8 i, j;
u8 bpp;
u32 check_flatness;
/* Link compression is only supported for DSI panels */
if ((dc->out->type != TEGRA_DC_OUT_DSI) || !dc->out->dsc_en) {
dev_dbg(&dc->ndev->dev,
"Link compression not supported by the panel\n");
return;
}
dev_info(&dc->ndev->dev, "Configuring DSC\n");
/*
* Slice height and width are in pixel. When the whole picture is one
* slice, slice height and width should be equal to picture height or
* width.
*/
bpp = dc->out->dsc_bpp;
slice_height = dc->out->slice_height;
slice_width = (mode->h_active / dc->out->num_of_slices);
val = DSC_VALID_SLICE_HEIGHT(slice_height) |
DSC_VALID_SLICE_WIDTH(slice_width);
tegra_dc_writel(dc, val, DSC_COM_DSC_SLICE_INFO);
if (tegra_dc_is_t21x()) {
/*
* Use RC overflow solution 2.
* Program overflow threshold values and
* enable flatness checking.
*/
check_flatness = ((3 - (slice_width % 3)) != 2);
val = DC_DISP_SPARE0_VALID_OVERFLOW_THRES(
DC_DISP_DEF_OVERFLOW_THRES) |
DC_DISP_SPARE0_RC_SOLUTION_MODE(
DC_SPARE0_RC_SOLUTION_2) |
(check_flatness << 1) | 0x1;
tegra_dc_writel(dc, val, DC_DISP_DISPLAY_SPARE0);
}
/*
* Calculate chunk size based on slice width. Enable block prediction
* and set compressed bpp rate.
*/
chunk_size = DIV_ROUND_UP((slice_width * bpp), 8);
val = DSC_VALID_BITS_PER_PIXEL(bpp << 4) |
DSC_VALID_CHUNK_SIZE(chunk_size);
if (dc->out->en_block_pred)
val |= DSC_BLOCK_PRED_ENABLE;
tegra_dc_writel(dc, val, DSC_COM_DSC_COMMON_CTRL);
/* Set output delay */
initial_xmit_delay = (4096 / bpp);
if (slice_height == mode->v_active)
initial_xmit_delay = 475;
delay_in_slice = DIV_ROUND_UP(DSC_ENC_FIFO_SIZE * 8 * 3, bpp) +
slice_width + initial_xmit_delay + DSC_START_PIXEL_POS;
hblank = mode->h_sync_width + mode->h_front_porch + mode->h_back_porch;
output_delay = ((delay_in_slice / slice_width) *
(mode->h_active + hblank)) + (delay_in_slice % slice_width);
if (dc->out->dual_dsc_en) {
wrap_output_delay = output_delay * 2 + mode->h_active / 2 + 28;
if (wrap_output_delay % 2)
wrap_output_delay += 1;
} else {
wrap_output_delay = output_delay + 20;
}
val = DSC_VALID_OUTPUT_DELAY(output_delay);
val |= DSC_VALID_WRAP_OUTPUT_DELAY(wrap_output_delay);
tegra_dc_writel(dc, val, DC_COM_DSC_DELAY);
/* Set RC flatness info and bpg offset for first line of slice */
first_line_bpg_offset = (bpp == 8) ? DSC_DEF_8BPP_FIRST_LINE_BPG_OFFS :
DSC_DEF_12BPP_FIRST_LINE_BPG_OFFS;
val = DSC_VALID_FLATNESS_MAX_QP(12) | DSC_VALID_FLATNESS_MIN_QP(3) |
DSC_VALID_FIRST_LINE_BPG_OFFS(first_line_bpg_offset);
tegra_dc_writel(dc, val, DC_COM_DSC_RC_FLATNESS_INFO);
/* Set RC model offset values to be used at slice start and end */
initial_offset = (bpp == 8) ? DSC_DEF_8BPP_INITIAL_OFFSET :
DSC_DEF_12BPP_INITIAL_OFFSET;
num_xtra_mux_bits = 198 + ((chunk_size * slice_height * 8 - 246) % 48);
final_offset = rc_model_size - (initial_xmit_delay * bpp) +
num_xtra_mux_bits;
val = DSC_VALID_INITIAL_OFFSET(initial_offset) |
DSC_VALID_FINAL_OFFSET(final_offset);
tegra_dc_writel(dc, val, DC_COM_DSC_RC_OFFSET_INFO);
/*
* DSC_SLICE_BPG_OFFSET:Bpg offset used to enforce slice bit constraint
* DSC_NFL_BPG_OFFSET:Non-first line bpg offset to use
*/
nfl_bpg_offset = DIV_ROUND_UP((first_line_bpg_offset << 11),
(slice_height - 1));
slice_bpg_offset = (rc_model_size - initial_offset +
num_xtra_mux_bits) * (1 << 11);
groups_per_line = slice_width / 3;
total_groups = slice_height * groups_per_line;
slice_bpg_offset = DIV_ROUND_UP(slice_bpg_offset, total_groups);
val = DSC_VALID_SLICE_BPG_OFFSET(slice_bpg_offset) |
DSC_VALID_NFL_BPG_OFFSET(nfl_bpg_offset);
tegra_dc_writel(dc, val, DC_COM_DSC_RC_BPGOFF_INFO);
/*
* INITIAL_DEC_DELAY:Num of pixels to delay the VLD on the decoder
* INITIAL_XMIT_DELAY:Num of pixels to delay the initial transmission
*/
min_rate_buf_size = rc_model_size - initial_offset +
(initial_xmit_delay * bpp) +
(groups_per_line * first_line_bpg_offset);
hrdelay = DIV_ROUND_UP(min_rate_buf_size, bpp);
initial_dec_delay = hrdelay - initial_xmit_delay;
val = DSC_VALID_INITIAL_XMIT_DELAY(initial_xmit_delay) |
DSC_VALID_INITIAL_DEC_DELAY(initial_dec_delay);
tegra_dc_writel(dc, val, DSC_COM_DSC_RC_RELAY_INFO);
/*
* SCALE_DECR_INTERVAL:Decrement scale factor every scale_decr_interval
* groups.
* INITIAL_SCALE_VALUE:Initial value for scale factor
* SCALE_INCR_INTERVAL:Increment scale factor every scale_incr_interval
* groups.
*/
initial_scale_value = (8 * rc_model_size) / (rc_model_size -
initial_offset);
scale_dec_interval = groups_per_line / (initial_scale_value - 8);
val = DSC_VALID_SCALE_DECR_INTERVAL(scale_dec_interval) |
DSC_VALID_INITIAL_SCALE_VALUE(initial_scale_value);
tegra_dc_writel(dc, val, DC_COM_DSC_RC_SCALE_INFO);
final_scale = (8 * rc_model_size) / (rc_model_size - final_offset);
scale_inc_interval = (2048 * final_offset) /
((final_scale - 9) * (slice_bpg_offset + nfl_bpg_offset));
val = DSC_VALID_SCALE_INCR_INTERVAL(scale_inc_interval);
tegra_dc_writel(dc, val, DC_COM_DSC_RC_SCALE_INFO_2);
/* Set the RC parameters */
val = DSC_VALID_RC_TGT_OFFSET_LO(3) | DSC_VALID_RC_TGT_OFFSET_HI(3) |
DSC_VALID_RC_EDGE_FACTOR(6) |
DSC_VALID_RC_QUANT_INCR_LIMIT1(11) |
DSC_VALID_RC_QUANT_INCR_LIMIT0(11);
tegra_dc_writel(dc, val, DC_COM_DSC_RC_PARAM_SET);
for (i = 0, j = 0; j < DSC_MAX_RC_BUF_THRESH_REGS; j++) {
val = DSC_VALID_RC_BUF_THRESH_0(dsc_rc_buf_thresh[i++]);
val |= DSC_VALID_RC_BUF_THRESH_1(dsc_rc_buf_thresh[i++]);
val |= DSC_VALID_RC_BUF_THRESH_2(dsc_rc_buf_thresh[i++]);
val |= DSC_VALID_RC_BUF_THRESH_3(dsc_rc_buf_thresh[i++]);
if (dsc_rc_buf_thresh_regs[j] == DC_COM_DSC_RC_BUF_THRESH_0)
val |= DSC_VALID_RC_MODEL_SIZE(rc_model_size);
tegra_dc_writel(dc, val, dsc_rc_buf_thresh_regs[j]);
}
for (i = 0, j = 0; j < DSC_MAX_RC_RANGE_CFG_REGS; j++) {
val = DSC_VALID_RC_RANGE_PARAM_LO(
SET_RC_RANGE_MIN_QP(dsc_rc_ranges_8bpp_8bpc[i][0]) |
SET_RC_RANGE_MAX_QP(dsc_rc_ranges_8bpp_8bpc[i][1]) |
SET_RC_RANGE_BPG_OFFSET(dsc_rc_ranges_8bpp_8bpc[i][2]));
i++;
val |= DSC_VALID_RC_RANGE_PARAM_HI(
SET_RC_RANGE_MIN_QP(dsc_rc_ranges_8bpp_8bpc[i][0]) |
SET_RC_RANGE_MAX_QP(dsc_rc_ranges_8bpp_8bpc[i][1]) |
SET_RC_RANGE_BPG_OFFSET(dsc_rc_ranges_8bpp_8bpc[i][2]));
i++;
tegra_dc_writel(dc, val, dsc_rc_range_config[j]);
}
val = tegra_dc_readl(dc, DC_COM_DSC_UNIT_SET);
val &= ~DSC_LINEBUF_DEPTH_8_BIT;
/* If dual dsc is enabled then the number slices are distributed
* between each link i.e 2 links with 4 lanes each.
*/
val |= DSC_VALID_SLICE_NUM_MINUS1_IN_LINE((dc->out->dual_dsc_en ?
dc->out->num_of_slices / 2 : dc->out->num_of_slices)
- 1);
val |= DSC_CHECK_FLATNESS2;
val |= DSC_FLATNESS_FIX_EN;
tegra_dc_writel(dc, val, DC_COM_DSC_UNIT_SET);
dev_info(&dc->ndev->dev, "DSC configured\n");
}
void tegra_dc_en_dis_dsc(struct tegra_dc *dc, bool enable)
{
u32 val, set_bits = 0x0;
bool is_enabled = false, set_reg = false;
if ((dc->out->type != TEGRA_DC_OUT_DSI) || !dc->out->dsc_en)
return;
val = tegra_dc_readl(dc, DC_COM_DSC_TOP_CTL);
if (dc->out->dual_dsc_en) {
set_bits = DSC_ENABLE | DSC_DUAL_ENABLE;
if ((val & DSC_ENABLE) && (val & DSC_DUAL_ENABLE))
is_enabled = true;
} else {
set_bits = DSC_ENABLE;
if (val & DSC_ENABLE)
is_enabled = true;
}
if (enable && !is_enabled) {
val |= set_bits;
set_reg = true;
} else if (!enable && is_enabled) {
val &= ~set_bits;
set_reg = true;
}
if (set_reg) {
dev_info(&dc->ndev->dev, "Link compression %s\n",
enable ? "enabled" : "disabled");
val &= ~DSC_AUTO_RESET;
tegra_dc_writel(dc, val, DC_COM_DSC_TOP_CTL);
}
}
/* Used only on T21x */
static void tegra_dc_init_vpulse2_int(struct tegra_dc *dc)
{
u32 start, end;
unsigned long val;
val = V_PULSE2_H_POSITION(0) | V_PULSE2_LAST(0x1);
tegra_dc_writel(dc, val, DC_DISP_V_PULSE2_CONTROL);
start = dc->mode.v_ref_to_sync + dc->mode.v_sync_width +
dc->mode.v_back_porch + dc->mode.v_active;
end = start + 1;
val = V_PULSE2_START_A(start) + V_PULSE2_END_A(end);
tegra_dc_writel(dc, val, DC_DISP_V_PULSE2_POSITION_A);
val = tegra_dc_readl(dc, DC_CMD_INT_ENABLE);
val |= V_PULSE2_INT;
tegra_dc_writel(dc, val , DC_CMD_INT_ENABLE);
tegra_dc_mask_interrupt(dc, V_PULSE2_INT);
val = tegra_dc_readl(dc, DC_DISP_DISP_SIGNAL_OPTIONS0);
val |= V_PULSE_2_ENABLE;
tegra_dc_writel(dc, val, DC_DISP_DISP_SIGNAL_OPTIONS0);
}
/* Used only on T21x */
static int tegra_dc_init(struct tegra_dc *dc)
{
int i;
int int_enable;
u32 val;
tegra_dc_io_start(dc);
tegra_dc_writel(dc, 0x00000100, DC_CMD_GENERAL_INCR_SYNCPT_CNTRL);
tegra_dc_writel(dc, 0x00000100 | dc->vblank_syncpt,
DC_CMD_CONT_SYNCPT_VSYNC);
tegra_dc_writel(dc, 0x00004700, DC_CMD_INT_TYPE);
tegra_dc_writel(dc, WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT |
WIN_T_UF_INT | WIN_D_UF_INT | HC_UF_INT |
WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT,
DC_CMD_INT_POLARITY);
tegra_dc_writel(dc, 0x00202020, DC_DISP_MEM_HIGH_PRIORITY);
tegra_dc_writel(dc, 0x00010101, DC_DISP_MEM_HIGH_PRIORITY_TIMER);
/* enable interrupts for vblank, frame_end and underflows */
int_enable = (FRAME_END_INT | V_BLANK_INT | ALL_UF_INT());
/* for panels with one-shot mode enable tearing effect interrupt */
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
int_enable |= MSF_INT;
tegra_dc_writel(dc, int_enable, DC_CMD_INT_ENABLE);
tegra_dc_writel(dc, ALL_UF_INT(), DC_CMD_INT_MASK);
tegra_dc_init_vpulse2_int(dc);
tegra_dc_writel(dc, WRITE_MUX_ASSEMBLY | READ_MUX_ASSEMBLY,
DC_CMD_STATE_ACCESS);
tegra_dc_writel(dc, 0x00000000, DC_DISP_BLEND_BACKGROUND_COLOR);
if (tegra_dc_is_t21x()) {
if (dc->is_cmu_set_bl)
_tegra_dc_update_cmu_aligned(dc, &dc->cmu, true);
else
_tegra_dc_update_cmu(dc, &dc->cmu);
dc->is_cmu_set_bl = false;
}
tegra_dc_set_color_control(dc);
for_each_set_bit(i, &dc->valid_windows,
tegra_dc_get_numof_dispwindows()) {
struct tegra_dc_win *win = tegra_dc_get_window(dc, i);
tegra_dc_writel(dc, WINDOW_A_SELECT << i,
DC_CMD_DISPLAY_WINDOW_HEADER);
if (tegra_dc_is_t21x()) {
tegra_dc_set_win_csc(dc, &win->win_csc);
tegra_dc_set_lut(dc, win);
}
if (tegra_dc_is_nvdisplay()) {
tegra_dc_set_nvdisp_win_csc(dc, &win->nvdisp_win_csc);
tegra_dc_set_nvdisp_lut(dc, win);
}
tegra_dc_set_scaling_filter(dc);
}
for_each_set_bit(i, &dc->valid_windows,
tegra_dc_get_numof_dispwindows()) {
struct tegra_dc_win *win = tegra_dc_get_window(dc, i);
BUG_ON(!win);
/* refuse to operate on invalid syncpts */
if (WARN_ON(win->syncpt.id == NVSYNCPT_INVALID))
continue;
if (!nvhost_syncpt_read_ext_check(dc->ndev, win->syncpt.id, &val))
win->syncpt.min = win->syncpt.max = val;
}
dc->crc_pending = false;
trace_display_mode(dc, &dc->mode);
if (dc->mode.pclk) {
if (!dc->initialized) {
if (tegra_dc_program_mode(dc, &dc->mode)) {
tegra_dc_io_end(dc);
dev_warn(&dc->ndev->dev,
"%s: tegra_dc_program_mode failed\n",
__func__);
return -EINVAL;
}
} else {
dev_info(&dc->ndev->dev, "DC initialized, "
"skipping tegra_dc_program_mode.\n");
}
}
tegra_dc_io_end(dc);
return 0;
}
/* Used only on T21x */
static bool _tegra_dc_controller_enable(struct tegra_dc *dc)
{
int failed_init = 0;
int i;
if (WARN_ON(!dc || !dc->out || !dc->out_ops))
return false;
tegra_dc_unpowergate_locked(dc);
if (dc->out->enable)
dc->out->enable(&dc->ndev->dev);
tegra_dc_setup_clk(dc, dc->clk);
/* dc clk always on for continuous mode */
if (!(dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE))
tegra_dc_clk_enable(dc);
else
#ifdef CONFIG_TEGRA_CORE_DVFS
tegra_dvfs_set_rate(dc->clk, dc->mode.pclk);
#else
;
#endif
tegra_dc_get(dc);
tegra_dc_power_on(dc);
/* do not accept interrupts during initialization */
tegra_dc_writel(dc, 0, DC_CMD_INT_MASK);
enable_dc_irq(dc);
failed_init = tegra_dc_init(dc);
if (failed_init) {
tegra_dc_writel(dc, 0, DC_CMD_INT_MASK);
disable_irq_nosync(dc->irq);
tegra_dc_clear_bandwidth(dc);
if (dc->out && dc->out->disable)
dc->out->disable(&dc->ndev->dev);
tegra_dc_put(dc);
if (!(dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE))
tegra_dc_clk_disable(dc);
else
#ifdef CONFIG_TEGRA_CORE_DVFS
tegra_dvfs_set_rate(dc->clk, 0);
#else
;
#endif
dev_warn(&dc->ndev->dev,
"%s: tegra_dc_init failed\n", __func__);
return false;
}
if (dc->out_ops && dc->out_ops->enable)
dc->out_ops->enable(dc);
/* force a full blending update */
for (i = 0; i < tegra_dc_get_numof_dispwindows(); i++)
dc->blend.z[i] = -1;
tegra_dc_ext_enable(dc->ext);
/* initialize cursor to defaults, as driver depends on HW state */
tegra_dc_writel(dc, 0, DC_DISP_CURSOR_START_ADDR);
tegra_dc_writel(dc, 0, DC_DISP_CURSOR_START_ADDR_NS);
tegra_dc_writel(dc, 0, DC_DISP_CURSOR_START_ADDR_HI);
tegra_dc_writel(dc, 0, DC_DISP_CURSOR_START_ADDR_HI_NS);
tegra_dc_writel(dc, 0, DC_DISP_CURSOR_POSITION);
tegra_dc_writel(dc, 0, DC_DISP_CURSOR_POSITION_NS);
tegra_dc_writel(dc, 0xffffff, DC_DISP_CURSOR_FOREGROUND); /* white */
tegra_dc_writel(dc, 0x000000, DC_DISP_CURSOR_BACKGROUND); /* black */
tegra_dc_writel(dc, 0, DC_DISP_BLEND_CURSOR_CONTROL);
trace_display_enable(dc);
tegra_dc_writel(dc, CURSOR_UPDATE, DC_CMD_STATE_CONTROL);
tegra_dc_writel(dc, CURSOR_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
tegra_dc_dsc_init(dc);
if (dc->out->postpoweron)
dc->out->postpoweron(&dc->ndev->dev);
if (dc->out_ops && dc->out_ops->postpoweron)
dc->out_ops->postpoweron(dc);
tegra_log_resume_time();
tegra_dc_put(dc);
return true;
}
static int _tegra_dc_set_default_videomode(struct tegra_dc *dc)
{
if (dc->mode.pclk == 0) {
switch (dc->out->type) {
case TEGRA_DC_OUT_HDMI:
/* No fallback mode. If no mode info available
* from bootloader or device tree,
* mode will be set by userspace during unblank.
*/
break;
case TEGRA_DC_OUT_DP:
if (tegra_dc_is_nvdisplay())
break;
case TEGRA_DC_OUT_FAKE_DP:
case TEGRA_DC_OUT_NULL:
return tegra_dc_set_fb_mode(dc, &tegra_dc_vga_mode, 0);
/* Do nothing for other outputs for now */
case TEGRA_DC_OUT_RGB:
case TEGRA_DC_OUT_DSI:
default:
return false;
}
}
return false;
}
int tegra_dc_set_default_videomode(struct tegra_dc *dc)
{
return _tegra_dc_set_default_videomode(dc);
}
/* Preset sync point maxval for maximum range. */
static u32 tegra_dc_syncpt_preset_maxval(struct platform_device *dev, u32 id)
{
u32 old;
old = nvhost_syncpt_read_minval(dev, id);
nvhost_syncpt_set_maxval(dev, id, old - 2);
return old;
}
/* Advance sync point to flush all waiters, return value before advancing. */
static u32 tegra_dc_syncpt_flush(struct platform_device *dev, u32 id)
{
u32 old;
old = nvhost_syncpt_read_minval(dev, id);
nvhost_syncpt_set_min_eq_max_ext(dev, id);
return old;
}
static bool _tegra_dc_enable(struct tegra_dc *dc)
{
if (dc->mode.pclk == 0)
return false;
if (!dc->out)
return false;
if (dc->enabled)
return true;
dc->shutdown = false;
if ((dc->out->type == TEGRA_DC_OUT_HDMI ||
dc->out->type == TEGRA_DC_OUT_DP ||
dc->out->type == TEGRA_DC_OUT_DSI) &&
!tegra_dc_hpd(dc))
return false;
pm_runtime_get_sync(&dc->ndev->dev);
if (tegra_dc_is_nvdisplay()) {
if (tegra_nvdisp_head_enable(dc)) {
pm_runtime_put_sync(&dc->ndev->dev);
return false;
}
} else {
if (!_tegra_dc_controller_enable(dc)) {
pm_runtime_put_sync(&dc->ndev->dev);
return false;
}
}
if (tegra_dc_is_nvdisplay())
tegra_dc_crc_reset(dc);
tegra_dc_client_handle_event(dc, NOTIFY_DC_ENABLED_EVENT);
return true;
}
void tegra_dc_enable(struct tegra_dc *dc)
{
if (WARN_ON(!dc || !dc->out || !dc->out_ops))
return;
mutex_lock(&dc->lock);
if (!dc->enabled) {
if (tegra_dc_reserve_common_channel(dc)) {
dev_err(&dc->ndev->dev,
"%s: DC %d enable failed due to timeout\n",
__func__, dc->ctrl_num);
mutex_unlock(&dc->lock);
return;
}
tegra_dc_syncpt_preset_maxval(dc->ndev, dc->vblank_syncpt);
dc->enabled = _tegra_dc_enable(dc);
tegra_dc_release_common_channel(dc);
}
mutex_unlock(&dc->lock);
trace_display_mode(dc, &dc->mode);
}
static void tegra_dc_flush_syncpts_window(struct tegra_dc *dc, unsigned win)
{
struct tegra_dc_win *w = tegra_dc_get_window(dc, win);
u32 max;
/* refuse to operate on invalid syncpts */
if (WARN_ON(w->syncpt.id == NVSYNCPT_INVALID))
return;
/* flush any pending syncpt waits */
max = tegra_dc_incr_syncpt_max_locked(dc, win);
while (w->syncpt.min < w->syncpt.max) {
trace_display_syncpt_flush(dc, w->syncpt.id,
w->syncpt.min, w->syncpt.max);
w->syncpt.min++;
nvhost_syncpt_cpu_incr_ext(dc->ndev, w->syncpt.id);
}
}
void tegra_dc_disable_window(struct tegra_dc *dc, unsigned win)
{
struct tegra_dc_win *w = tegra_dc_get_window(dc, win);
/* reset window bandwidth */
w->bandwidth = 0;
w->new_bandwidth = 0;
/* disable windows */
w->flags &= ~TEGRA_WIN_FLAG_ENABLED;
/* flush pending syncpts */
tegra_dc_flush_syncpts_window(dc, win);
}
static void _tegra_dc_controller_disable(struct tegra_dc *dc)
{
unsigned i;
tegra_dc_get(dc);
if (atomic_read(&dc->holding)) {
/* Force release all refs but the last one */
atomic_set(&dc->holding, 1);
tegra_dc_release_dc_out(dc);
}
if (dc->out && dc->out->prepoweroff)
dc->out->prepoweroff();
if (dc->out_ops && dc->out_ops->vrr_enable &&
dc->out && dc->out->vrr && dc->out->vrr->capability) {
dc->out_ops->vrr_enable(dc, 0);
/* TODO: Fix properly. Bug 1644102. */
tegra_dc_set_act_vfp(dc, dc->mode.v_front_porch);
}
if (dc->out_ops && dc->out_ops->disable)
dc->out_ops->disable(dc);
if (tegra_dc_is_powered(dc))
tegra_dc_writel(dc, 0, DC_CMD_INT_MASK);
disable_irq_nosync(dc->irq);
tegra_dc_clear_bandwidth(dc);
if (dc->out && dc->out->disable)
dc->out->disable(&dc->ndev->dev);
for_each_set_bit(i, &dc->valid_windows,
tegra_dc_get_numof_dispwindows()) {
tegra_dc_disable_window(dc, i);
}
trace_display_disable(dc);
if (dc->out_ops && dc->out_ops->postpoweroff)
dc->out_ops->postpoweroff(dc);
if (tegra_dc_is_nvdisplay())
/* clear the windows ownership from head*/
tegra_nvdisp_head_disable(dc);
/* clean up tegra_dc_vsync_enable() */
while (dc->out->user_needs_vblank > 0)
_tegra_dc_user_vsync_enable(dc, false);
if (test_bit(V_BLANK_USER, &dc->vblank_ref_count)) {
tegra_dc_release_dc_out(dc);
clear_bit(V_BLANK_USER, &dc->vblank_ref_count);
}
tegra_dc_put(dc);
if (tegra_dc_is_t21x()) {
/* disable always on dc clk in continuous mode */
if (!(dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE))
tegra_dc_clk_disable(dc);
else
#ifdef CONFIG_TEGRA_CORE_DVFS
tegra_dvfs_set_rate(dc->clk, 0);
#else
;
#endif
}
}
void tegra_dc_stats_enable(struct tegra_dc *dc, bool enable)
{
return;
}
bool tegra_dc_stats_get(struct tegra_dc *dc)
{
return true;
}
/* blank selected windows by disabling them */
void tegra_dc_blank_wins(struct tegra_dc *dc, unsigned windows)
{
int nwins = tegra_dc_get_numof_dispwindows();
struct tegra_dc_win *dcwins[nwins];
struct tegra_dc_win blank_win;
unsigned i;
unsigned long int blank_windows;
int nr_win = 0;
/* YUV420 10bpc variables */
bool yuv_420_10b_path = false;
int fb_win_idx = -1;
int fb_win_pos = -1;
if (dc->yuv_bypass && tegra_dc_is_yuv420_10bpc(&dc->mode))
yuv_420_10b_path = true;
if (tegra_dc_is_nvdisplay() && dc->shutdown)
yuv_420_10b_path = false;
if (yuv_420_10b_path) {
u32 active_width = dc->mode.h_active;
u32 active_height = dc->mode.v_active;
blank_win = *tegra_fb_get_blank_win(dc->fb);
/*
* 420 10bpc blank frame statically
* created for this pixel format
*/
blank_win.h.full = dfixed_const(1);
blank_win.w.full = dfixed_const(active_width);
blank_win.fmt = TEGRA_DC_EXT_FMT_T_A8R8G8B8;
blank_win.out_w = active_width;
blank_win.out_h = active_height;
dcwins[0] = &blank_win;
fb_win_idx = dcwins[0]->idx;
nr_win++;
}
blank_windows = windows & dc->valid_windows;
if (!blank_windows)
return;
for_each_set_bit(i, &blank_windows, tegra_dc_get_numof_dispwindows()) {
dcwins[nr_win] = tegra_dc_get_window(dc, i);
if (!dcwins[nr_win])
continue;
/*
* Prevent disabling the YUV410 10bpc window in case
* it is also in blank_windows, additionally, prevent
* adding it to the list twice.
*/
if (fb_win_idx == dcwins[nr_win]->idx) {
fb_win_pos = i;
continue;
}
dcwins[nr_win++]->flags &= ~TEGRA_WIN_FLAG_ENABLED;
}
tegra_dc_update_windows(dcwins, nr_win, NULL, true, false);
tegra_dc_sync_windows(dcwins, nr_win);
tegra_dc_program_bandwidth(dc, true);
/*
* Disable, reset bandwidth and advance pending syncpoints
* of all windows. In case the statically created 420 10bpc
* is also present in blank_windows, only advance syncpoints.
*/
for_each_set_bit(i, &blank_windows, tegra_dc_get_numof_dispwindows()) {
if (fb_win_pos == i) {
tegra_dc_flush_syncpts_window(dc, i);
continue;
}
tegra_dc_disable_window(dc, i);
}
}
int tegra_dc_restore(struct tegra_dc *dc)
{
return tegra_dc_ext_restore(dc->ext);
}
static void _tegra_dc_disable(struct tegra_dc *dc)
{
/* power down resets the registers, setting to true
* causes CMU to be restored in tegra_dc_init(). */
if (tegra_dc_is_t21x())
dc->cmu_dirty = true;
tegra_dc_crc_deinit(dc);
tegra_dc_get(dc);
_tegra_dc_controller_disable(dc);
tegra_dc_put(dc);
tegra_dc_powergate_locked(dc);
pm_runtime_put(&dc->ndev->dev);
tegra_log_suspend_entry_time();
tegra_dc_client_handle_event(dc, NOTIFY_DC_DISABLED_EVENT);
}
void tegra_dc_disable(struct tegra_dc *dc)
{
dc->shutdown = true;
tegra_dc_disable_irq_ops(dc, false);
tegra_dc_syncpt_flush(dc->ndev, dc->vblank_syncpt);
}
static inline void tegra_dc_disable_all_wins(struct tegra_dc *dc)
{
int blank_windows = tegra_dc_ext_disable(dc->ext);
/*
* The tegra_dc_ext_disable() call above will disable the windows on
* this head that are owned by the given dc_ext owner. Any active
* windows on this head that have no dc_ext owner will be left
* untouched. The following tegra_dc_blank_wins() call will ensure that
* any remaining windows are actually disabled.
*/
tegra_dc_blank_wins(dc, ~blank_windows);
}
static void tegra_dc_disable_irq_ops(struct tegra_dc *dc, bool from_irq)
{
if (WARN_ON(!dc || !dc->out || !dc->out_ops))
return;
if (dc->shutdown) {
if ((dc->out->type == TEGRA_DC_OUT_HDMI) ||
(dc->out->type == TEGRA_DC_OUT_DP))
if (dc->out_ops && dc->out_ops->shutdown_interface)
dc->out_ops->shutdown_interface(dc);
}
if (tegra_dc_reserve_common_channel(dc)) {
dev_err(&dc->ndev->dev,
"%s: DC %d disable failed due to timeout\n",
__func__, dc->ctrl_num);
return;
}
tegra_dc_disable_all_wins(dc);
if (dc->cursor.enabled)
tegra_dc_cursor_suspend(dc);
/* it's important that new underflow work isn't scheduled before the
* lock is acquired. */
cancel_delayed_work_sync(&dc->underflow_work);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE) {
mutex_lock(&dc->one_shot_lock);
cancel_delayed_work_sync(&dc->one_shot_work);
}
mutex_lock(&dc->lp_lock);
mutex_lock(&dc->lock);
if (dc->enabled) {
dc->enabled = false;
dc->blanked = false;
if (!dc->suspended)
_tegra_dc_disable(dc);
}
tegra_dc_release_common_channel(dc);
#ifdef CONFIG_SWITCH
if (dc->switchdev_registered)
switch_set_state(&dc->modeset_switch, 0);
#endif
mutex_unlock(&dc->lock);
mutex_unlock(&dc->lp_lock);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
mutex_unlock(&dc->one_shot_lock);
if (!from_irq)
synchronize_irq(dc->irq);
trace_display_mode(dc, &dc->mode);
/* disable pending clks due to uncompleted frames */
while (tegra_platform_is_silicon() && atomic_read(&dc->enable_count))
tegra_dc_put(dc);
}
static void tegra_dc_underflow_worker(struct work_struct *work)
{
struct tegra_dc *dc = container_of(
to_delayed_work(work), struct tegra_dc, underflow_work);
mutex_lock(&dc->lock);
tegra_dc_get(dc);
if (dc->enabled)
tegra_dc_underflow_handler(dc);
tegra_dc_put(dc);
mutex_unlock(&dc->lock);
}
static void (*flip_callback)(void);
static spinlock_t flip_callback_lock;
static bool init_tegra_dc_flip_callback_called;
static int __init init_tegra_dc_flip_callback(void)
{
spin_lock_init(&flip_callback_lock);
init_tegra_dc_flip_callback_called = true;
return 0;
}
pure_initcall(init_tegra_dc_flip_callback);
int tegra_dc_set_flip_callback(void (*callback)(void))
{
WARN_ON(!init_tegra_dc_flip_callback_called);
spin_lock(&flip_callback_lock);
flip_callback = callback;
spin_unlock(&flip_callback_lock);
return 0;
}
EXPORT_SYMBOL(tegra_dc_set_flip_callback);
int tegra_dc_unset_flip_callback(void)
{
spin_lock(&flip_callback_lock);
flip_callback = NULL;
spin_unlock(&flip_callback_lock);
return 0;
}
EXPORT_SYMBOL(tegra_dc_unset_flip_callback);
void tegra_dc_call_flip_callback(void)
{
spin_lock(&flip_callback_lock);
if (flip_callback)
flip_callback();
spin_unlock(&flip_callback_lock);
}
EXPORT_SYMBOL(tegra_dc_call_flip_callback);
#ifdef CONFIG_SWITCH
static ssize_t switch_modeset_print_mode(struct switch_dev *sdev, char *buf)
{
struct tegra_dc *dc =
container_of(sdev, struct tegra_dc, modeset_switch);
if (!sdev->state)
return sprintf(buf, "offline\n");
return sprintf(buf, "%dx%d\n", dc->mode.h_active, dc->mode.v_active);
}
#endif
/* enables pads and clocks to perform DDC/I2C */
int tegra_dc_ddc_enable(struct tegra_dc *dc, bool enabled)
{
int ret = -ENOSYS;
if (dc->out_ops) {
if (enabled && dc->out_ops->ddc_enable)
ret = dc->out_ops->ddc_enable(dc);
else if (!enabled && dc->out_ops->ddc_disable)
ret = dc->out_ops->ddc_disable(dc);
}
return ret;
}
#if IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)
int tegra_dc_slgc_disp0(struct notifier_block *nb,
unsigned long unused0, void *unused1)
{
struct tegra_dc *dc = NULL;
u32 val;
if (tegra_dc_is_nvdisplay())
return NOTIFY_OK;
dc = container_of(nb, struct tegra_dc, slgc_notifier);
tegra_dc_get(dc);
val = tegra_dc_readl(dc, DC_COM_DSC_TOP_CTL);
val |= DSC_SLCG_OVERRIDE;
tegra_dc_writel(dc, val, DC_COM_DSC_TOP_CTL); /* set */
/* flush the previous write */
(void)tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);
val &= ~DSC_SLCG_OVERRIDE;
tegra_dc_writel(dc, val, DC_COM_DSC_TOP_CTL); /* restore */
tegra_dc_put(dc);
return NOTIFY_OK;
}
#endif
int tegra_dc_update_winmask(struct tegra_dc *dc, unsigned long winmask)
{
struct tegra_dc *dc_other;
struct tegra_dc_win *win;
int i, j, ret = 0;
int win_idx = -1;
if (tegra_dc_is_t21x())
return -EINVAL;
/* check that dc is not NULL and do range check */
if (!dc || (winmask >= (1 << tegra_dc_get_numof_dispwindows())))
return -EINVAL;
mutex_lock(&dc->lock);
if ((!dc->ndev) || (dc->enabled)) {
ret = -EINVAL;
goto exit;
}
/* check requested=enabled windows NOT owned by other dcs */
for_each_set_bit(i, &winmask, tegra_dc_get_numof_dispwindows()) {
j = dc->ndev->id;
win = tegra_dc_get_window(dc, i);
/* is window already owned by this dc? */
if (win && win->dc && (win->dc == dc)) {
/* get first valid window index for fb win index */
if (win_idx == -1)
win_idx = i;
continue;
}
/* is window already owned by other dc? */
for (j = 0; j < tegra_dc_get_numof_dispheads(); j++) {
dc_other = tegra_dc_get_dc(j);
if (!dc_other)
continue;
if (!dc_other->pdata) {
ret = -EINVAL;
goto exit;
}
/* found valid dc, does it own window=i? */
if ((dc_other->pdata->win_mask >> i) & 0x1) {
dev_err(&dc->ndev->dev,
"win[%d] already on fb%d\n", i, j);
ret = -EINVAL;
goto exit;
}
}
/* get first valid window index for fb win index */
if (win_idx == -1)
win_idx = i;
}
/* attach window happens on device enable call and
* detach window happens on device disable call
*/
dc->pdata->win_mask = winmask;
dc->valid_windows = winmask;
tegra_fb_set_win_index(dc, winmask);
dc->pdata->fb->win = win_idx;
exit:
mutex_unlock(&dc->lock);
return ret;
}
struct clk *tegra_disp_of_clk_get_by_name(struct device_node *np,
const char *name)
{
return of_clk_get_by_name(np, name);
}
struct clk *tegra_disp_clk_get(struct device *dev, const char *id)
{
struct clk *disp_clk;
if (tegra_dc_is_t21x())
return devm_clk_get(dev, id);
disp_clk = devm_clk_get(dev, id);
if (IS_ERR_OR_NULL(disp_clk))
pr_err("Failed to get %s clk\n", id);
return disp_clk;
}
void tegra_disp_clk_put(struct device *dev, struct clk *clk)
{
if (tegra_dc_is_nvdisplay()) {
if (tegra_platform_is_silicon() && tegra_bpmp_running())
devm_clk_put(dev, clk);
} else {
return clk_put(clk);
}
}
bool tegra_is_bl_display_initialized(int instance)
{
struct tegra_dc *dc = find_dc_by_ctrl_num(instance);
if (!dc) {
pr_err("could not find dc with ctrl number %d\n", instance);
return false;
}
if (!dc->fb_mem) {
pr_debug("dc->fb_mem not initialized\n");
return false;
}
return (dc->fb_mem->start != 0);
}
EXPORT_SYMBOL(tegra_is_bl_display_initialized);
#if KERNEL_VERSION(4, 14, 0) <= LINUX_VERSION_CODE
void tegra_get_fb_resource(struct resource *fb_res, int instance)
{
}
#endif
static int tegra_dc_probe(struct platform_device *ndev)
{
struct tegra_dc *dc;
struct tegra_dc_mode *mode;
struct tegra_dc_platform_data *dt_pdata = NULL;
struct clk *clk;
#ifndef CONFIG_TEGRA_ISOMGR
struct clk *emc_clk;
#else
int isomgr_client_id = -1;
#endif
struct tegra_bwmgr_client *emc_la_handle;
struct device_node *np = ndev->dev.of_node;
struct resource *fb_mem = NULL;
char clk_name[16];
int ret = 0;
void __iomem *base;
int irq;
int i;
#if IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)
int partition_id_disa, partition_id_disb;
#endif
struct resource of_fb_res;
struct resource of_lut_res;
int hotplug_init_status = -1;
if (tegra_dc_is_nvdisplay() && !tegra_dc_common_probe_status())
return -EPROBE_DEFER;
/* Serialize dc device registration */
mutex_lock(&tegra_dc_registration_lock);
/* Specify parameters for the maximum physical segment size. */
ndev->dev.dma_parms = &tegra_dc_dma_parameters;
dc = kzalloc(sizeof(struct tegra_dc), GFP_KERNEL);
if (!dc) {
dev_err(&ndev->dev, "can't allocate memory for tegra_dc\n");
mutex_unlock(&tegra_dc_registration_lock);
return -ENOMEM;
}
irq = of_irq_to_resource(np, 0, NULL);
if (!irq)
goto err_free;
ndev->id = tegra_dc_set(dc);
if (ndev->id < 0) {
dev_err(&ndev->dev, "can't add dc\n");
goto err_free;
}
dt_pdata = of_dc_parse_platform_data(ndev, dt_pdata);
if (IS_ERR_OR_NULL(dt_pdata)) {
ret = dt_pdata ? PTR_ERR(dt_pdata) : -EINVAL;
goto err_free;
}
dc->ctrl_num = dt_pdata->ctrl_num;
base = of_iomap(np, 0);
if (!base) {
dev_err(&ndev->dev, "registers can't be mapped\n");
ret = -EBUSY;
goto err_release_resource_reg;
}
dev_info(&ndev->dev, "Display dc.%p registered with id=%d\n",
base, ndev->id);
if (tegra_dc_is_t21x()) {
int i;
char syncpt_name[25];
const char win_name[] = "abcd";
for (i = 0; i < tegra_dc_get_numof_dispwindows(); i++)
dc->windows[i].syncpt.id = NVSYNCPT_INVALID;
dc->valid_windows = dt_pdata->win_mask;
for_each_set_bit(i, &dc->valid_windows,
tegra_dc_get_numof_dispwindows()) {
/* Get syncpt_name like disp0_a */
snprintf(syncpt_name, sizeof(syncpt_name),
"disp%d_%c", dc->ctrl_num, win_name[i]);
dc->windows[i].syncpt.id =
nvhost_get_syncpt_client_managed(ndev,
syncpt_name);
/* Use first valid window as fb window */
if (dt_pdata->fb->win == TEGRA_FB_WIN_INVALID)
dt_pdata->fb->win = i;
}
if (dc->ctrl_num == 0) {
dc->vblank_syncpt = NVSYNCPT_VBLANK0;
#if IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)
partition_id_disa = tegra_pd_get_powergate_id(
tegra_disa_pd);
if (partition_id_disa < 0) {
ret = -EINVAL;
goto err_iounmap_reg;
}
dc->powergate_id = partition_id_disa;
#ifdef CONFIG_TEGRA_ISOMGR
isomgr_client_id = TEGRA_ISO_CLIENT_DISP_0;
#endif
dc->slgc_notifier.notifier_call = tegra_dc_slgc_disp0;
slcg_register_notifier(dc->powergate_id,
&dc->slgc_notifier);
#endif
} else if (dc->ctrl_num == 1) {
dc->vblank_syncpt = NVSYNCPT_VBLANK1;
#if IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)
partition_id_disb = tegra_pd_get_powergate_id(
tegra_disb_pd);
if (partition_id_disb < 0) {
ret = -EINVAL;
goto err_iounmap_reg;
}
dc->powergate_id = partition_id_disb;
#endif
#ifdef CONFIG_TEGRA_ISOMGR
isomgr_client_id = TEGRA_ISO_CLIENT_DISP_1;
#endif
} else {
dev_err(&ndev->dev, "unknown dc number:%d\n",
dc->ctrl_num);
}
}
memset(&of_fb_res, 0, sizeof(struct resource));
if (tegra_dc_is_nvdisplay()) {
/* on T186+ k4.4, k4.9, k4.14, fb is passed through the DT */
ret = of_tegra_get_fb_resource(np, &of_fb_res, "surface");
if (!ret)
ret = of_tegra_get_fb_resource(np, &of_lut_res, "lut");
} else {
#if KERNEL_VERSION(4, 14, 0) <= LINUX_VERSION_CODE
/* on T210 k4.14, use the DT -FIXME: debug T210 lut passing */
(void) of_lut_res;
ret = of_tegra_get_fb_resource(np, &of_fb_res, "surface");
#else
/* FIXME: still use the command line for T210 k4.9 */
tegra_get_fb_resource(&of_fb_res, dc->ctrl_num);
#endif
}
if (ret < 0)
goto err_iounmap_reg;
fb_mem = kzalloc(sizeof(struct resource), GFP_KERNEL);
if (fb_mem == NULL) {
ret = -ENOMEM;
goto err_iounmap_reg;
}
fb_mem->name = "fbmem";
fb_mem->flags = IORESOURCE_MEM;
fb_mem->start = (resource_size_t)of_fb_res.start;
fb_mem->end = (resource_size_t)of_fb_res.end;
if (tegra_dc_is_nvdisplay())
snprintf(clk_name, sizeof(clk_name), "nvdisplay_p%u",
dc->ctrl_num);
else
snprintf(clk_name, sizeof(clk_name), "disp%u",
dc->ctrl_num + 1);
clk = tegra_disp_clk_get(&ndev->dev, clk_name);
if (IS_ERR_OR_NULL(clk)) {
dev_err(&ndev->dev, "can't get clock: %s\n", clk_name);
ret = -ENOENT;
goto err_iounmap_reg;
}
dc->clk = clk;
dc->shift_clk_div.mul = dc->shift_clk_div.div = 1;
/* Initialize one shot work delay, it will be assigned by dsi
* according to refresh rate later. */
dc->one_shot_delay_ms = 40;
dc->base = base;
dc->irq = irq;
dc->ndev = ndev;
dc->fb_mem = fb_mem;
dc->pdata = dt_pdata;
dc->bw_kbps = 0;
if (tegra_dc_is_nvdisplay()) {
/* dc variables need to initialized before nvdisp init */
ret = tegra_nvdisp_init(dc);
if (ret)
goto err_iounmap_reg;
}
mutex_init(&dc->lock);
mutex_init(&dc->one_shot_lock);
mutex_init(&dc->lp_lock);
mutex_init(&dc->msrmnt_info.lock);
init_completion(&dc->frame_end_complete);
init_completion(&dc->crc_complete);
init_completion(&dc->hpd_complete);
init_waitqueue_head(&dc->wq);
init_waitqueue_head(&dc->timestamp_wq);
INIT_WORK(&dc->vblank_work, tegra_dc_vblank);
dc->vblank_ref_count = 0;
INIT_WORK(&dc->frame_end_work, tegra_dc_frame_end);
INIT_WORK(&dc->vpulse2_work, tegra_dc_vpulse2);
dc->vpulse2_ref_count = 0;
INIT_DELAYED_WORK(&dc->underflow_work, tegra_dc_underflow_worker);
INIT_DELAYED_WORK(&dc->one_shot_work, tegra_dc_one_shot_worker);
if (tegra_dc_is_nvdisplay())
INIT_DELAYED_WORK(&dc->vrr_work, tegra_nvdisp_vrr_work);
if (tegra_dc_is_t21x())
tegra_dc_init_lut_defaults(&dc->fb_lut);
if (tegra_dc_is_nvdisplay())
tegra_dc_init_nvdisp_lut_defaults(&dc->fb_nvdisp_lut);
dc->n_windows = tegra_dc_get_numof_dispwindows();
if (tegra_dc_is_t21x()) {
for (i = 0; i < tegra_dc_get_numof_dispwindows(); i++) {
struct tegra_dc_win *tmp_win = &dc->tmp_wins[i];
struct tegra_dc_win *win = &dc->windows[i];
win->dc = dc;
if (test_bit(i, &dc->valid_windows)) {
win->idx = i;
tmp_win->idx = i;
tmp_win->dc = dc;
tegra_dc_init_win_csc_defaults(&win->win_csc);
tegra_dc_init_lut_defaults(&win->lut);
}
}
}
if (tegra_dc_is_nvdisplay()) {
if (dc->pdata->nvdisp_cmu)
dc->default_csc = dc->pdata->nvdisp_cmu->panel_csc;
else
tegra_nvdisp_init_win_csc_defaults(&dc->default_csc);
}
platform_set_drvdata(ndev, dc);
#ifdef CONFIG_SWITCH
dc->modeset_switch.name = dev_name(&ndev->dev);
dc->modeset_switch.state = 0;
dc->modeset_switch.print_state = switch_modeset_print_mode;
ret = switch_dev_register(&dc->modeset_switch);
if (ret < 0) {
dev_err(&ndev->dev,
"failed to register switch driver ret(%d)\n", ret);
dc->switchdev_registered = false;
} else
dc->switchdev_registered = true;
#endif
tegra_dc_feature_register(dc);
if (dc->pdata->default_out) {
if (dc->pdata->default_out->hotplug_init)
dc->pdata->default_out->hotplug_init(&dc->ndev->dev);
ret = tegra_dc_set_out(dc, dc->pdata->default_out, false);
if (ret < 0) {
dev_err(&dc->ndev->dev, "failed to initialize DC out ops\n");
goto err_put_clk;
}
} else {
dev_err(&ndev->dev,
"No default output specified. Leaving output disabled.\n");
}
dc->mode_dirty = false; /* ignore changes tegra_dc_set_out has done */
if (!dc->out) {
ret = -EINVAL;
goto err_put_clk;
}
if (tegra_dc_is_nvdisplay())
nvdisp_register_backlight_notifier(dc);
dc->boot_topology.disp_id = dc->ndev->id;
dc->boot_topology.protocol = dc->out->type;
if (dc->out_ops->get_connector_instance)
dc->boot_topology.conn_inst =
dc->out_ops->get_connector_instance(dc);
else
dc->boot_topology.conn_inst = TEGRA_DC_TOPOLOGY_INVALID;
dc->boot_topology.valid = true;
dc->current_topology = dc->boot_topology;
if ((dc->pdata->flags & TEGRA_DC_FLAG_ENABLED) &&
dc->out->type == TEGRA_DC_OUT_LVDS) {
struct fb_monspecs specs;
struct tegra_dc_lvds_data *lvds = tegra_dc_get_outdata(dc);
if (!tegra_edid_get_monspecs(lvds->edid, &specs))
tegra_dc_set_fb_mode(dc, specs.modedb, false);
}
#ifndef CONFIG_TEGRA_ISOMGR
/*
* The emc is a shared clock, it will be set based on
* the requirements for each user on the bus.
*/
snprintf(clk_name, sizeof(clk_name), "disp%u_emc",
dc->ctrl_num + 1);
emc_clk = tegra_disp_clk_get(&ndev->dev, clk_name);
if (IS_ERR_OR_NULL(emc_clk)) {
dev_err(&ndev->dev, "can't get %s clock\n", clk_name);
ret = -ENOENT;
goto err_put_clk;
}
dc->emc_clk = emc_clk;
#endif
/*
* The emc_la clock is being added to set the floor value
* for emc depending on the LA calculaions for each window
*/
if (!tegra_dc_is_nvdisplay()) {
snprintf(clk_name, sizeof(clk_name), "disp%u_la_emc",
dc->ctrl_num + 1);
emc_la_handle = tegra_bwmgr_register(
display_la_emc_client_id[dc->ctrl_num]);
if (IS_ERR_OR_NULL(emc_la_handle)) {
dev_err(&ndev->dev, "can't get handle %s\n", clk_name);
ret = -ENOENT;
goto err_disable_dc;
}
dc->emc_la_handle = emc_la_handle;
ret = tegra_bwmgr_set_emc(dc->emc_la_handle, 0,
TEGRA_BWMGR_SET_EMC_FLOOR);
if (ret) {
dev_err(&ndev->dev, "can't set emc clock: %d\n", ret);
ret = -EINVAL;
goto err_disable_dc;
}
}
dc->ext = tegra_dc_ext_register(ndev, dc);
if (IS_ERR_OR_NULL(dc->ext)) {
dev_warn(&ndev->dev, "Failed to enable Tegra DC extensions.\n");
dc->ext = NULL;
}
/* interrupt handler must be registered before tegra_fb_register() */
if (request_threaded_irq(irq, NULL, tegra_dc_irq, IRQF_ONESHOT,
dev_name(&ndev->dev), dc)) {
dev_err(&ndev->dev, "request_irq %d failed\n", irq);
ret = -EBUSY;
goto err_disable_dc;
}
disable_dc_irq(dc);
tegra_pd_add_device(&ndev->dev);
pm_runtime_use_autosuspend(&ndev->dev);
pm_runtime_set_autosuspend_delay(&ndev->dev, 100);
pm_runtime_enable(&ndev->dev);
/* Enable async suspend/resume to reduce LP0 latency */
device_enable_async_suspend(&ndev->dev);
/* if bootloader leaves this head enabled, then skip CMU programming. */
dc->is_cmu_set_bl = (dc->pdata->flags & TEGRA_DC_FLAG_ENABLED) != 0;
dc->cmu_enabled = dc->pdata->cmu_enable;
#if defined(CONFIG_TEGRA_ISOMGR)
if (tegra_dc_is_t21x()) {
if (isomgr_client_id == -1) {
dc->isomgr_handle = NULL;
} else {
dc->isomgr_handle = tegra_isomgr_register(
isomgr_client_id,
tegra_dc_calc_min_bandwidth(dc),
tegra_dc_bandwidth_renegotiate, dc);
if (IS_ERR(dc->isomgr_handle)) {
dev_err(&dc->ndev->dev,
"could not register isomgr. err=%ld\n",
PTR_ERR(dc->isomgr_handle));
ret = -ENOENT;
goto err_put_clk;
}
dc->reserved_bw = tegra_dc_calc_min_bandwidth(dc);
/*
* Use maximum value so we can try to reserve as much as
* needed until we are told by isomgr to backoff.
*/
dc->available_bw = UINT_MAX;
}
}
#endif
/* Initialize the flip stats to 0. */
atomic64_set(&dc->flip_stats.flips_queued, 0);
atomic64_set(&dc->flip_stats.flips_skipped, 0);
atomic64_set(&dc->flip_stats.flips_cmpltd, 0);
tegra_dc_create_debugfs(dc);
dc->frm_lck_info.frame_lock_enable = dc->pdata->frame_lock_enable;
dc->frm_lck_info.job_pending = false;
init_waitqueue_head(&(dc->frm_lck_info.win_upd_reqs));
dev_info(&ndev->dev, "probed\n");
if (dc->pdata->fb) {
if (dc->enabled && dc->pdata->fb->bits_per_pixel == -1) {
unsigned long fmt;
tegra_dc_writel(dc,
WINDOW_A_SELECT << dc->pdata->fb->win,
DC_CMD_DISPLAY_WINDOW_HEADER);
fmt = tegra_dc_readl(dc, DC_WIN_COLOR_DEPTH);
dc->pdata->fb->bits_per_pixel =
tegra_dc_fmt_bpp(fmt);
}
mode = tegra_dc_get_override_mode(dc);
if (mode) {
dc->pdata->fb->xres = mode->h_active;
dc->pdata->fb->yres = mode->v_active;
}
/* if current mode is not set, add 640x480 to current mode
* because fb_register always adds the current mode to the
* modelist.
*/
if (tegra_dc_is_t21x() && (!dc->mode.pclk || !dc->mode.h_active
|| !dc->mode.v_active))
tegra_dc_set_fb_mode(dc, &tegra_dc_vga_mode, false);
ret = tegra_dc_io_start(dc);
dc->fb = tegra_fb_register(ndev, dc, dc->pdata->fb, fb_mem);
if (!ret)
tegra_dc_io_end(dc);
if (IS_ERR_OR_NULL(dc->fb)) {
dc->fb = NULL;
dev_err(&ndev->dev, "failed to register fb\n");
ret = -EINVAL;
goto err_remove_debugfs;
}
}
if (dc->pdata->flags & TEGRA_DC_FLAG_ENABLED) {
/* WAR: BL is putting DC in bad state for EDP configuration */
if (!tegra_platform_is_vdk() &&
(dc->out->type == TEGRA_DC_OUT_DP)) {
if (tegra_dc_is_t21x()) {
dc->rst = of_reset_control_get(np, "dc_rst");
if (IS_ERR_OR_NULL(dc->rst)) {
dev_err(&dc->ndev->dev,
"Unable to get dc_rst%u reset control\n",
dc->ctrl_num);
ret = dc->rst ? PTR_ERR(dc->rst) : -ENOENT;
goto err_remove_debugfs;
}
if (dc->rst) {
tegra_disp_clk_prepare_enable(dc->clk);
reset_control_assert(dc->rst);
udelay(10);
reset_control_deassert(dc->rst);
udelay(10);
tegra_disp_clk_disable_unprepare(
dc->clk);
}
}
}
}
if (dc->out_ops && dc->out_ops->hotplug_init)
hotplug_init_status = dc->out_ops->hotplug_init(dc);
if (dc->out->type == TEGRA_DC_OUT_DP) {
ret = tegra_dc_set_fbcon_boot_mode(dc, dc->edid);
if (ret)
dev_err(&dc->ndev->dev,
"Failed to set fbcon mode for DC %d\n",
dc->ctrl_num);
}
if (dc->pdata->flags & TEGRA_DC_FLAG_ENABLED) {
_tegra_dc_set_default_videomode(dc);
dc->enabled = _tegra_dc_enable(dc);
#if IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)
/* BL or PG init will keep DISA unpowergated after booting.
* Adding an extra powergate to balance the refcount
* since _tegra_dc_enable() increases the refcount.
*/
if (tegra_dc_is_t21x()) {
if (!tegra_platform_is_fpga())
if (dc->powergate_id == TEGRA_POWERGATE_DISA)
tegra_dc_powergate_locked(dc);
}
#endif
}
if (dc->out_ops) {
if (dc->out_ops->detect && hotplug_init_status >= 0)
dc->connected = dc->out_ops->detect(dc);
else
dc->connected = true;
} else
dc->connected = false;
/* Powergate display module when it's unconnected. */
/* detect() function, if presetns, responsible for the powergate */
if (!tegra_dc_get_connected(dc) &&
!(dc->out_ops && dc->out_ops->detect))
tegra_dc_powergate_locked(dc);
tegra_dc_create_sysfs(&dc->ndev->dev);
/*
* Overriding the display mode only applies for modes set up during
* boot. It should not apply for e.g. HDMI hotplug.
*/
dc->initialized = false;
/*
* Initialize vedid state. This is placed here
* to allow persistence across sw HDMI hotplugs.
*/
dc->vedid = false;
dc->vedid_data = NULL;
mutex_unlock(&tegra_dc_registration_lock);
return 0;
err_remove_debugfs:
tegra_dc_remove_debugfs(dc);
free_irq(irq, dc);
err_disable_dc:
if (dc->ext) {
tegra_dc_ext_disable(dc->ext);
tegra_dc_ext_unregister(dc->ext);
}
mutex_lock(&dc->lock);
if (dc->enabled)
_tegra_dc_disable(dc);
dc->enabled = false;
mutex_unlock(&dc->lock);
#if defined(CONFIG_TEGRA_ISOMGR)
if (tegra_dc_is_t21x())
tegra_isomgr_unregister(dc->isomgr_handle);
#elif !defined(CONFIG_TEGRA_ISOMGR)
tegra_disp_clk_put(&ndev->dev, emc_clk);
#endif
if (!tegra_dc_is_nvdisplay())
tegra_bwmgr_unregister(dc->emc_la_handle);
err_put_clk:
#ifdef CONFIG_SWITCH
if (dc->switchdev_registered)
switch_dev_unregister(&dc->modeset_switch);
#endif
tegra_disp_clk_put(&ndev->dev, clk);
err_iounmap_reg:
iounmap(base);
kfree(fb_mem);
err_release_resource_reg:
err_free:
tegra_dc_clear(dc);
kfree(dc);
dc = NULL;
mutex_unlock(&tegra_dc_registration_lock);
return ret;
}
static int tegra_dc_remove(struct platform_device *ndev)
{
struct tegra_dc *dc = platform_get_drvdata(ndev);
int i;
if (!dc)
return 0;
if (dc->out->type == TEGRA_DC_OUT_HDMI)
for (i = 0; i < ARRAY_SIZE(hdmi_extcon_cable_id); i++)
if (extcon_hdmi_dc_map[i] == dc->ctrl_num) {
extcon_hdmi_dc_map[i] = -1;
break;
}
tegra_dc_remove_sysfs(&dc->ndev->dev);
tegra_dc_remove_debugfs(dc);
if (dc->fb) {
tegra_fb_unregister(dc->fb);
kfree(dc->fb_mem);
}
if (dc->ext) {
tegra_dc_ext_disable(dc->ext);
tegra_dc_ext_unregister(dc->ext);
}
kfree(dc->flip_buf.data);
kfree(dc->crc_buf.data);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE) {
mutex_lock(&dc->one_shot_lock);
cancel_delayed_work_sync(&dc->one_shot_work);
}
mutex_lock(&dc->lock);
if (dc->enabled)
_tegra_dc_disable(dc);
dc->enabled = false;
mutex_unlock(&dc->lock);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
mutex_unlock(&dc->one_shot_lock);
synchronize_irq(dc->irq); /* wait for IRQ handlers to finish */
#ifdef CONFIG_SWITCH
if (dc->switchdev_registered)
switch_dev_unregister(&dc->modeset_switch);
#endif
free_irq(dc->irq, dc);
#if defined(CONFIG_TEGRA_ISOMGR)
if (tegra_dc_is_nvdisplay()) {
if (!tegra_platform_is_vdk())
tegra_nvdisp_bandwidth_unregister();
} else {
if (dc->isomgr_handle) {
tegra_isomgr_unregister(dc->isomgr_handle);
dc->isomgr_handle = NULL;
}
}
#else
tegra_disp_clk_put(&ndev->dev, dc->emc_clk);
#endif
if (!tegra_dc_is_nvdisplay())
tegra_bwmgr_unregister(dc->emc_la_handle);
tegra_disp_clk_put(&ndev->dev, dc->clk);
iounmap(dc->base);
tegra_dc_clear(dc);
kfree(dc);
return 0;
}
#ifdef CONFIG_PM
static int tegra_dc_suspend(struct platform_device *ndev, pm_message_t state)
{
struct tegra_dc *dc = platform_get_drvdata(ndev);
int ret = 0;
if (!dc)
return ret;
trace_display_suspend(dc);
dev_info(&ndev->dev, "suspend\n");
ret = tegra_dc_reserve_common_channel(dc);
if (ret) {
dev_err(&dc->ndev->dev,
"%s: DC %d suspend failed due to timeout\n",
__func__, dc->ctrl_num);
return ret;
}
tegra_dc_disable_all_wins(dc);
tegra_dc_cursor_suspend(dc);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE) {
mutex_lock(&dc->one_shot_lock);
cancel_delayed_work_sync(&dc->one_shot_work);
}
mutex_lock(&dc->lock);
ret = tegra_dc_io_start(dc);
if (dc->enabled) {
_tegra_dc_disable(dc);
dc->enabled = false;
dc->reenable_on_resume = true;
}
dc->suspended = true;
if (dc->out_ops && dc->out_ops->suspend)
dc->out_ops->suspend(dc);
tegra_dc_release_common_channel(dc);
if (dc->out && dc->out->postsuspend) {
dc->out->postsuspend();
/* avoid resume event due to voltage falling on interfaces that
* support hotplug wake. And only do this if a panel is
* connected, if we are already disconnected, then no phantom
* hotplug can occur by disabling the voltage.
*/
if ((dc->out->flags & TEGRA_DC_OUT_HOTPLUG_WAKE_LP0)
&& tegra_dc_get_connected(dc))
msleep(100);
}
if (!ret)
tegra_dc_io_end(dc);
tegra_dc_syncpt_flush(dc->ndev, dc->vblank_syncpt);
mutex_unlock(&dc->lock);
if (dc->out->flags & TEGRA_DC_OUT_ONE_SHOT_MODE)
mutex_unlock(&dc->one_shot_lock);
synchronize_irq(dc->irq); /* wait for IRQ handlers to finish */
return 0;
}
static int tegra_dc_resume(struct platform_device *ndev)
{
struct tegra_dc *dc = platform_get_drvdata(ndev);
if (!dc)
return 0;
trace_display_resume(dc);
dev_info(&ndev->dev, "resume\n");
tegra_dc_syncpt_preset_maxval(dc->ndev, dc->vblank_syncpt);
/* To pan the fb on resume */
tegra_fb_pan_display_reset(dc->fb);
if (dc->out && dc->out->hotplug_init)
dc->out->hotplug_init(&ndev->dev);
if (dc->out_ops && dc->out_ops->resume)
dc->out_ops->resume(dc);
mutex_lock(&dc->lock);
if (!dc->enabled && dc->reenable_on_resume)
dc->enabled = _tegra_dc_enable(dc);
dc->reenable_on_resume = false;
dc->suspended = false;
mutex_unlock(&dc->lock);
tegra_dc_cursor_resume(dc);
return 0;
}
#endif /* CONFIG_PM */
void tegra_dc_shutdown(struct platform_device *ndev)
{
struct tegra_dc *dc = platform_get_drvdata(ndev);
if (WARN_ON(!dc || !dc->out || !dc->out_ops))
return;
if (!dc->enabled)
return;
kfree(dc->vedid_data);
dc->vedid_data = NULL;
dc->vedid = false;
/* Let dc clients know about shutdown event before calling disable */
if (dc->out_ops && dc->out_ops->shutdown)
dc->out_ops->shutdown(dc);
tegra_dc_disable(dc);
}
static int suspend_set(const char *val, struct kernel_param *kp)
{
if (!strcmp(val, "dump"))
dump_regs(tegra_dcs[0]);
#ifdef CONFIG_PM
else if (!strcmp(val, "suspend"))
tegra_dc_suspend(tegra_dcs[0]->ndev, PMSG_SUSPEND);
else if (!strcmp(val, "resume"))
tegra_dc_resume(tegra_dcs[0]->ndev);
#endif
return 0;
}
static int suspend_get(char *buffer, struct kernel_param *kp)
{
return 0;
}
static int suspend;
#if ((LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 135)) && (LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0)))
module_param_call(suspend, (void *)suspend_set, (void *)suspend_get, &suspend, 0644);
#else
module_param_call(suspend, suspend_set, suspend_get, &suspend, 0644);
#endif
#ifndef MODULE
static int __init parse_disp_params(char *options, struct tegra_dc_mode *mode)
{
int i, params[11];
char *p;
memset(params, 0, ARRAY_SIZE(params) * sizeof(int));
for (i = 0; i < ARRAY_SIZE(params); i++) {
if ((p = strsep(&options, ",")) != NULL) {
if (*p)
params[i] = simple_strtoul(p, &p, 10);
} else
return -EINVAL;
}
if ((mode->pclk = params[0]) == 0)
return -EINVAL;
mode->h_active = params[1];
mode->v_active = params[2];
mode->h_ref_to_sync = params[3];
mode->v_ref_to_sync = params[4];
mode->h_sync_width = params[5];
mode->v_sync_width = params[6];
mode->h_back_porch = params[7];
mode->v_back_porch = params[8];
mode->h_front_porch = params[9];
mode->v_front_porch = params[10];
return 0;
}
static int __init tegra_dc_mode_override(char *str)
{
char *p = str, *options;
if (!p || !*p)
return -EINVAL;
p = strstr(str, "hdmi:");
if (p) {
p += 5;
options = strsep(&p, ";");
if (parse_disp_params(options, &override_disp_mode[TEGRA_DC_OUT_HDMI]))
return -EINVAL;
}
p = strstr(str, "rgb:");
if (p) {
p += 4;
options = strsep(&p, ";");
if (parse_disp_params(options, &override_disp_mode[TEGRA_DC_OUT_RGB]))
return -EINVAL;
}
p = strstr(str, "dsi:");
if (p) {
p += 4;
options = strsep(&p, ";");
if (parse_disp_params(options, &override_disp_mode[TEGRA_DC_OUT_DSI]))
return -EINVAL;
}
p = strstr(str, "null:");
if (p) {
p += 5;
options = strsep(&p, ";");
if (parse_disp_params(options,
&override_disp_mode[TEGRA_DC_OUT_NULL]))
return -EINVAL;
}
return 0;
}
__setup("disp_params=", tegra_dc_mode_override);
#endif
#ifdef TEGRA_DC_USR_SHARED_IRQ
static struct tegra_dc *tegra_dc_hwidx2dc(int dcid)
{
struct tegra_dc *dc;
int i;
for (i = 0; i < tegra_dc_get_numof_dispheads(); i++) {
dc = tegra_dc_get_dc(i);
if (dc && (dcid == dc->ctrl_num))
return dc;
}
return NULL;
}
/*
* get Tegra display head status
* o inputs:
* - dcid: display head HW index (0 to max_dc_heads-1)
* - pSts: pointer to the head status structure to be returned
* o outputs:
* - return: error number
* . 0: registration successful without an error
* . !0: registration failed with an error
* - *pSts: head status
* o notes:
*/
int tegra_dc_get_disphead_sts(int dcid, struct tegra_dc_head_status *pSts)
{
struct tegra_dc *dc = tegra_dc_hwidx2dc(dcid);
if (dc) {
pSts->magic = TEGRA_DC_HEAD_STATUS_MAGIC1;
pSts->irqnum = dc->irq;
pSts->init = dc->initialized ? 1 : 0;
pSts->connected = dc->connected ? 1 : 0;
pSts->active = dc->enabled ? 1 : 0;
return 0;
} else {
return -ENODEV;
}
}
EXPORT_SYMBOL(tegra_dc_get_disphead_sts);
/*
* to register the Tegra display ISR user call-back routine
* o inputs:
* - dcid: display head HW index (0 to max_dc_heads-1)
* - usr_isr_cb: function pointer to the user call-back routine
* - usr_isr_pdt: user call-back private data
* o outputs:
* - return: error code
* . 0: registration successful without an error
* . !0: registration failed with an error
* o notes: will overwrite the old CB always
*/
int tegra_dc_register_isr_usr_cb(int dcid,
int (*usr_isr_cb)(int dcid, unsigned long irq_sts, void *usr_isr_pdt),
void *usr_isr_pdt)
{
struct tegra_dc *dc = tegra_dc_hwidx2dc(dcid);
/* register usr ISR */
if (dc && usr_isr_cb) {
if (dc->isr_usr_cb) {
dev_warn(&dc->ndev->dev,
"%s DC%d: overwriting ISR USR CB:%p PDT:%p\n",
__func__, dcid,
dc->isr_usr_cb, dc->isr_usr_pdt);
}
mutex_lock(&dc->lock);
/* always replace the old ISR */
dc->isr_usr_cb = usr_isr_cb;
dc->isr_usr_pdt = usr_isr_pdt;
mutex_unlock(&dc->lock);
dev_info(&dc->ndev->dev,
"DC%d: ISR USR CB:%p PDT:%p registered\n",
dcid, usr_isr_cb, usr_isr_pdt);
return 0;
} else {
return dc ? -EINVAL : -ENODEV;
}
}
EXPORT_SYMBOL(tegra_dc_register_isr_usr_cb);
/*
* to unregister the Tegra display ISR user call-back routine
* o inputs:
* - dcid: display head HW index (0 to max_dc_heads-1)
* - usr_isr_cb: registered user call-back. ignored.
* - usr_isr_pdt: registered user call-back private data. ignored.
* o outputs:
* - return: error code
* . 0: unregistration successful
* . !0: unregistration failed with an error
* o notes: will unregister the current CB always
*/
int tegra_dc_unregister_isr_usr_cb(int dcid,
int (*usr_isr_cb)(int dcid, unsigned long irq_sts, void *usr_isr_pdt),
void *usr_isr_pdt)
{
struct tegra_dc *dc = tegra_dc_hwidx2dc(dcid);
/* unregister USR ISR CB */
if (dc) {
mutex_lock(&dc->lock);
dc->isr_usr_cb = NULL;
dc->isr_usr_pdt = NULL;
mutex_unlock(&dc->lock);
dev_info(&dc->ndev->dev,
"DC%d: USR ISR CB unregistered\n", dcid);
return 0;
} else {
return -ENODEV;
}
}
EXPORT_SYMBOL(tegra_dc_unregister_isr_usr_cb);
#endif /* TEGRA_DC_USR_SHARED_IRQ */
/**
* tegra_dc_enable_disable_frame_lock - enables/disables frame_lock in dc.
* @dc: Pointer to tegra_dc struct.
* @enable: Boolean value for enabling or disabling.
*
* The only call(entry point) to this function should be from dc_common.
* dc_common makes sure that dc!=NULL before calling this API.
*
* Return: void
*/
void tegra_dc_enable_disable_frame_lock(struct tegra_dc *dc, bool enable)
{
mutex_lock(&dc->lock);
dc->frm_lck_info.frame_lock_enable = enable;
mutex_unlock(&dc->lock);
}
EXPORT_SYMBOL(tegra_dc_enable_disable_frame_lock);
/**
* tegra_dc_request_trigger_wins - enables/disables frame_lock in dc.
* @dc: Pointer to tegra_dc struct.
* @enable: Boolean value for status.
*
* Return: void
*/
void tegra_dc_request_trigger_wins(struct tegra_dc *dc)
{
mutex_lock(&dc->lock);
tegra_dc_trigger_windows(dc);
mutex_unlock(&dc->lock);
}
EXPORT_SYMBOL(tegra_dc_request_trigger_wins);
int tegra_dc_get_numof_dispheads(void)
{
if (!hw_data || !hw_data->valid)
return -ENODEV;
return hw_data->nheads;
}
EXPORT_SYMBOL(tegra_dc_get_numof_dispheads);
int tegra_dc_get_numof_dispwindows(void)
{
if (!hw_data || !hw_data->valid)
return DC_N_WINDOWS;
return hw_data->nwins;
}
EXPORT_SYMBOL(tegra_dc_get_numof_dispwindows);
int tegra_dc_get_numof_dispsors(void)
{
if (!hw_data || !hw_data->valid)
return -ENODEV;
return hw_data->nsors;
}
EXPORT_SYMBOL(tegra_dc_get_numof_dispsors);
/* tegra_dc_get_max_lines() - gets v_total for current mode
* @disp_id : the display id of the concerned head.
*
* Return : v_total if successful else error value.
*/
int tegra_dc_get_max_lines(int disp_id)
{
int max_lines;
struct tegra_dc *dc;
struct tegra_dc_mode *m;
dc = tegra_dc_get_dc(disp_id);
if (!dc)
return -ENODEV;
m = &dc->mode;
max_lines = m->v_back_porch + m->v_active +
m->v_front_porch + m->v_sync_width;
return max_lines;
}
EXPORT_SYMBOL(tegra_dc_get_max_lines);
/* tegra_dc_get_addr_info() - gets the base address for a head
* @disp_id : the display id of the concerned head.
* @res : ptr to the resource from the caller.
*
* Return : 0 if successful else error value.
*/
int tegra_dc_get_addr_info(int disp_id, struct resource *res)
{
int ret;
struct tegra_dc *dc;
dc = tegra_dc_get_dc(disp_id);
if (!dc || !res)
return -ENODEV;
ret = of_address_to_resource(dc->ndev->dev.of_node, 0, res);
if (ret)
return ret;
return 0;
}
EXPORT_SYMBOL(tegra_dc_get_addr_info);
/*
* tegra_dc_get_vsync_timestamp() - Reads the vsync timestamp.
* @dc : pointer to struct tegra_dc for the current head.
*
* Currently supported for one chip version. TODO for others.
*
* Return : The 64 bit timestamp value.
*/
uint64_t tegra_dc_get_vsync_timestamp(struct tegra_dc *dc)
{
if (!dc->enabled)
return 0;
if (tegra_dc_is_t21x() || tegra_dc_is_t18x())
return 0;
else if (tegra_dc_is_t19x())
return tegra_dc_get_vsync_timestamp_t19x(dc);
pr_warn("%s: Couldn't find the right chip version\n", __func__);
return 0;
}
/*
* tegra_dc_line2ns() - gets the time required to scan a given number of lines.
* @dc : points to struct tegra_dc for the current head.
*
* Return : time in nanosecs
*/
static inline u64 tegra_dc_line2ns(struct tegra_dc *dc, int nr_lines)
{
return nr_lines * dc->mode_metadata.line_in_nsec;
}
/*
* tegra_dc_get_scanline_timestamp() - gets the timestamp of a scanline
* @dc : pointer to struct tegra_dc of the cuurent head.
* @scanline : the scanline for which timestamp is needed.
*
* This helper function gives the timestamp of the @scanline when it occurred
* last.
*
* Return : the timestamp value.
*/
static u64 tegra_dc_get_scanline_timestamp(struct tegra_dc *dc,
const u32 scanline)
{
ktime_t ts;
u64 timestamp;
int curr_scanline;
curr_scanline = tegra_dc_get_v_count(dc);
ts = ktime_get();
timestamp = ktime_to_ns(ts);
if (scanline < curr_scanline)
timestamp -= tegra_dc_line2ns(dc, curr_scanline - scanline);
else
timestamp -= tegra_dc_line2ns(dc, curr_scanline +
(dc->mode_metadata.vtotal_lines - scanline));
return timestamp;
}
/*
* tegra_dc_collect_latency_data() - stores relevant info needed
* for latency instrumentation.
* @dc : pointer to struct tegra_dc of the current head.
*
* Currently supports nvdisplay only. Using the already stored
* dma_buff_handle and the relevant offset, reads the first 2 pixels of
* framebuffer. Returns if not nvdisplay, or the latency_measuring
* functionality is disabled or the handle is NULL.
*
* Return : void
*/
static void tegra_dc_collect_latency_data(struct tegra_dc *dc)
{
int ret;
struct dma_buf *handle;
int page_num = 0;
void *ptr;
u64 value;
if (tegra_dc_is_t21x() || !dc->enabled)
return;
mutex_lock(&dc->msrmnt_info.lock);
handle = dc->msrmnt_info.buf_handle;
if (!handle || !dc->msrmnt_info.enabled) {
dev_dbg(&dc->ndev->dev,
"dma_buff is NULL or latency collection is disabled\n");
mutex_unlock(&dc->msrmnt_info.lock);
return;
}
ret = dma_buf_begin_cpu_access(handle, 0,
handle->size, DMA_BIDIRECTIONAL);
if (ret) {
dev_err(&dc->ndev->dev, "dma_buf_begin_cpu_access failed\n");
mutex_unlock(&dc->msrmnt_info.lock);
return;
}
ptr = dma_buf_kmap(handle, page_num);
if (!ptr) {
dev_err(&dc->ndev->dev, "dma_buf_kmap failed\n");
dma_buf_end_cpu_access(handle, 0,
handle->size, DMA_BIDIRECTIONAL);
mutex_unlock(&dc->msrmnt_info.lock);
return;
}
value = *((u64 *)(ptr + dc->msrmnt_info.offset));
trace_display_embedded_latency(dc->ctrl_num,
dc->msrmnt_info.line_num, be64_to_cpup(&value));
dma_buf_kunmap(handle, page_num, ptr);
dma_buf_end_cpu_access(handle, 0, handle->size, DMA_BIDIRECTIONAL);
mutex_unlock(&dc->msrmnt_info.lock);
}
/*
* tegra_dc_en_dis_latency_msrmnt_mode() - enables/disables latency
* measurement mode in dc.
* @dc : pointer to struct tegra_dc of the current head.
* @enable : tells if the latency_measuring functionality has to be enabled
* or disabled.
*
* This wrapper functions calls into the pertinent enable/disable function based
* on the chip type.
*
* Return : 0 if successful else relevant error number
*/
int tegra_dc_en_dis_latency_msrmnt_mode(struct tegra_dc *dc, int enable)
{
if (!dc)
return -ENODEV;
if (tegra_dc_is_nvdisplay())
tegra_nvdisp_set_msrmnt_mode(dc, enable);
return 0;
}
struct tegra_dc_pd_table *tegra_dc_get_disp_pd_table(void)
{
if (!hw_data || !hw_data->valid)
return ERR_PTR(-ENODEV);
return hw_data->pd_table;
}
static int tegra_dc_assign_hw_data(void)
{
const struct of_device_id *match = NULL;
if (hw_data) {
pr_warn("%s: hw data already assigned\n", __func__);
return 0;
}
of_find_matching_node_and_match(NULL, tegra_display_of_match, &match);
if (!match) {
pr_err("%s: no matching compatible node\n", __func__);
return -ENODEV;
}
hw_data = (struct tegra_dc_hw_data *)match->data;
if (!hw_data->valid) {
hw_data = NULL;
pr_err("%s: hw_data is not valid for %s\n", __func__,
match->compatible);
return -EINVAL;
}
return 0;
}
inline bool tegra_dc_is_t21x(void)
{
return hw_data && (hw_data->version == TEGRA_DC_HW_T210);
}
inline bool tegra_dc_is_t18x(void)
{
return hw_data && (hw_data->version == TEGRA_DC_HW_T18x);
}
inline bool tegra_dc_is_t19x(void)
{
return hw_data && (hw_data->version == TEGRA_DC_HW_T19x);
}
inline bool tegra_dc_is_nvdisplay(void)
{
return (tegra_dc_is_t18x() || tegra_dc_is_t19x());
}
EXPORT_SYMBOL(tegra_dc_is_nvdisplay);
static void tegra_dc_populate_t21x_hw_data(struct tegra_dc_hw_data *hw_data)
{
if (!hw_data)
return;
hw_data->nheads = 2;
hw_data->nwins = 5;
hw_data->nsors = 2;
/* unused */
hw_data->pd_table = NULL;
hw_data->valid = true;
hw_data->version = TEGRA_DC_HW_T210;
}
/**
* tegra_dc_hw_init - Initializes hardware specific data for dc.
*
* The only call(entry point) to this function as of today should
* be from dc_common. Since dc_common needs to be probed before
* tegradc and the former also needs some hardware related info,
* dc_common initializes hw data in its module_init(). The order
* of calls to module_init() is kept as dc_common's followed by
* tegra_dc's module_init().
*
* Return: 0 if success else corresponding error number from
* @tegra_dc_assign_hw_data().
*/
int tegra_dc_hw_init(void)
{
int ret;
tegra_dc_populate_t21x_hw_data(&t21x_hw_data);
if (tegra_dc_populate_t18x_hw_data)
tegra_dc_populate_t18x_hw_data(&t18x_hw_data);
if (tegra_dc_populate_t19x_hw_data)
tegra_dc_populate_t19x_hw_data(&t19x_hw_data);
ret = tegra_dc_assign_hw_data();
return ret;
}
static struct platform_driver tegra_dc_driver = {
.driver = {
.name = "tegradc",
.owner = THIS_MODULE,
.of_match_table =
of_match_ptr(tegra_display_of_match),
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe = tegra_dc_probe,
.remove = tegra_dc_remove,
#ifdef CONFIG_PM
.suspend = tegra_dc_suspend,
.resume = tegra_dc_resume,
#endif
.shutdown = tegra_dc_shutdown,
};
static int __init tegra_dc_module_init(void)
{
int ret;
int max_heads;
#if defined(CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT) && defined(CONFIG_DEBUG_FS)
int i;
#endif
max_heads = tegra_dc_get_numof_dispheads();
if (max_heads < 0) {
printk(KERN_ERR "tegradc module_init failed\n");
return -ENOENT;
}
tegra_dcs = kzalloc(max_heads * sizeof(struct tegra_dc *), GFP_KERNEL);
if (!tegra_dcs)
return -ENOMEM;
#if defined(CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT) && defined(CONFIG_DEBUG_FS)
boot_out_type = kzalloc(max_heads * sizeof(int), GFP_KERNEL);
if (!boot_out_type) {
kfree(tegra_dcs);
return -ENOMEM;
}
for (i = 0; i < max_heads; i++)
boot_out_type[i] = -1;
#endif
ret = tegra_dc_ext_module_init();
if (ret) {
#if defined(CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT) && defined(CONFIG_DEBUG_FS)
kfree(boot_out_type);
#endif
kfree(tegra_dcs);
return ret;
}
return platform_driver_register(&tegra_dc_driver);
}
static void __exit tegra_dc_module_exit(void)
{
#if defined(CONFIG_TEGRA_DC_FAKE_PANEL_SUPPORT) && defined(CONFIG_DEBUG_FS)
kfree(boot_out_type);
#endif
kfree(tegra_dcs);
platform_driver_unregister(&tegra_dc_driver);
tegra_dc_ext_module_exit();
}
module_exit(tegra_dc_module_exit);
module_init(tegra_dc_module_init);
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