forked from rrcarlosr/Jetpack
432 lines
12 KiB
C
432 lines
12 KiB
C
/*
|
|
* saa7706.c Philips SAA7706H Car Radio DSP driver
|
|
* Copyright (c) 2009 Intel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/slab.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-ctrls.h>
|
|
|
|
#define DRIVER_NAME "saa7706h"
|
|
|
|
/* the I2C memory map looks like this
|
|
|
|
$1C00 - $FFFF Not Used
|
|
$2200 - $3FFF Reserved YRAM (DSP2) space
|
|
$2000 - $21FF YRAM (DSP2)
|
|
$1FF0 - $1FFF Hardware Registers
|
|
$1280 - $1FEF Reserved XRAM (DSP2) space
|
|
$1000 - $127F XRAM (DSP2)
|
|
$0FFF DSP CONTROL
|
|
$0A00 - $0FFE Reserved
|
|
$0980 - $09FF Reserved YRAM (DSP1) space
|
|
$0800 - $097F YRAM (DSP1)
|
|
$0200 - $07FF Not Used
|
|
$0180 - $01FF Reserved XRAM (DSP1) space
|
|
$0000 - $017F XRAM (DSP1)
|
|
*/
|
|
|
|
#define SAA7706H_REG_CTRL 0x0fff
|
|
#define SAA7706H_CTRL_BYP_PLL 0x0001
|
|
#define SAA7706H_CTRL_PLL_DIV_MASK 0x003e
|
|
#define SAA7706H_CTRL_PLL3_62975MHZ 0x003e
|
|
#define SAA7706H_CTRL_DSP_TURBO 0x0040
|
|
#define SAA7706H_CTRL_PC_RESET_DSP1 0x0080
|
|
#define SAA7706H_CTRL_PC_RESET_DSP2 0x0100
|
|
#define SAA7706H_CTRL_DSP1_ROM_EN_MASK 0x0600
|
|
#define SAA7706H_CTRL_DSP1_FUNC_PROM 0x0000
|
|
#define SAA7706H_CTRL_DSP2_ROM_EN_MASK 0x1800
|
|
#define SAA7706H_CTRL_DSP2_FUNC_PROM 0x0000
|
|
#define SAA7706H_CTRL_DIG_SIL_INTERPOL 0x8000
|
|
|
|
#define SAA7706H_REG_EVALUATION 0x1ff0
|
|
#define SAA7706H_EVAL_DISABLE_CHARGE_PUMP 0x000001
|
|
#define SAA7706H_EVAL_DCS_CLOCK 0x000002
|
|
#define SAA7706H_EVAL_GNDRC1_ENABLE 0x000004
|
|
#define SAA7706H_EVAL_GNDRC2_ENABLE 0x000008
|
|
|
|
#define SAA7706H_REG_CL_GEN1 0x1ff3
|
|
#define SAA7706H_CL_GEN1_MIN_LOOPGAIN_MASK 0x00000f
|
|
#define SAA7706H_CL_GEN1_LOOPGAIN_MASK 0x0000f0
|
|
#define SAA7706H_CL_GEN1_COARSE_RATION 0xffff00
|
|
|
|
#define SAA7706H_REG_CL_GEN2 0x1ff4
|
|
#define SAA7706H_CL_GEN2_WSEDGE_FALLING 0x000001
|
|
#define SAA7706H_CL_GEN2_STOP_VCO 0x000002
|
|
#define SAA7706H_CL_GEN2_FRERUN 0x000004
|
|
#define SAA7706H_CL_GEN2_ADAPTIVE 0x000008
|
|
#define SAA7706H_CL_GEN2_FINE_RATIO_MASK 0x0ffff0
|
|
|
|
#define SAA7706H_REG_CL_GEN4 0x1ff6
|
|
#define SAA7706H_CL_GEN4_BYPASS_PLL1 0x001000
|
|
#define SAA7706H_CL_GEN4_PLL1_DIV_MASK 0x03e000
|
|
#define SAA7706H_CL_GEN4_DSP1_TURBO 0x040000
|
|
|
|
#define SAA7706H_REG_SEL 0x1ff7
|
|
#define SAA7706H_SEL_DSP2_SRCA_MASK 0x000007
|
|
#define SAA7706H_SEL_DSP2_FMTA_MASK 0x000031
|
|
#define SAA7706H_SEL_DSP2_SRCB_MASK 0x0001c0
|
|
#define SAA7706H_SEL_DSP2_FMTB_MASK 0x000e00
|
|
#define SAA7706H_SEL_DSP1_SRC_MASK 0x003000
|
|
#define SAA7706H_SEL_DSP1_FMT_MASK 0x01c003
|
|
#define SAA7706H_SEL_SPDIF2 0x020000
|
|
#define SAA7706H_SEL_HOST_IO_FMT_MASK 0x1c0000
|
|
#define SAA7706H_SEL_EN_HOST_IO 0x200000
|
|
|
|
#define SAA7706H_REG_IAC 0x1ff8
|
|
#define SAA7706H_REG_CLK_SET 0x1ff9
|
|
#define SAA7706H_REG_CLK_COEFF 0x1ffa
|
|
#define SAA7706H_REG_INPUT_SENS 0x1ffb
|
|
#define SAA7706H_INPUT_SENS_RDS_VOL_MASK 0x0003f
|
|
#define SAA7706H_INPUT_SENS_FM_VOL_MASK 0x00fc0
|
|
#define SAA7706H_INPUT_SENS_FM_MPX 0x01000
|
|
#define SAA7706H_INPUT_SENS_OFF_FILTER_A_EN 0x02000
|
|
#define SAA7706H_INPUT_SENS_OFF_FILTER_B_EN 0x04000
|
|
#define SAA7706H_REG_PHONE_NAV_AUDIO 0x1ffc
|
|
#define SAA7706H_REG_IO_CONF_DSP2 0x1ffd
|
|
#define SAA7706H_REG_STATUS_DSP2 0x1ffe
|
|
#define SAA7706H_REG_PC_DSP2 0x1fff
|
|
|
|
#define SAA7706H_DSP1_MOD0 0x0800
|
|
#define SAA7706H_DSP1_ROM_VER 0x097f
|
|
#define SAA7706H_DSP2_MPTR0 0x1000
|
|
|
|
#define SAA7706H_DSP1_MODPNTR 0x0000
|
|
|
|
#define SAA7706H_DSP2_XMEM_CONTLLCW 0x113e
|
|
#define SAA7706H_DSP2_XMEM_BUSAMP 0x114a
|
|
#define SAA7706H_DSP2_XMEM_FDACPNTR 0x11f9
|
|
#define SAA7706H_DSP2_XMEM_IIS1PNTR 0x11fb
|
|
|
|
#define SAA7706H_DSP2_YMEM_PVGA 0x212a
|
|
#define SAA7706H_DSP2_YMEM_PVAT1 0x212b
|
|
#define SAA7706H_DSP2_YMEM_PVAT 0x212c
|
|
#define SAA7706H_DSP2_YMEM_ROM_VER 0x21ff
|
|
|
|
#define SUPPORTED_DSP1_ROM_VER 0x667
|
|
|
|
struct saa7706h_state {
|
|
struct v4l2_subdev sd;
|
|
struct v4l2_ctrl_handler hdl;
|
|
unsigned muted;
|
|
};
|
|
|
|
static inline struct saa7706h_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct saa7706h_state, sd);
|
|
}
|
|
|
|
static int saa7706h_i2c_send(struct i2c_client *client, const u8 *data, int len)
|
|
{
|
|
int err = i2c_master_send(client, data, len);
|
|
if (err == len)
|
|
return 0;
|
|
return err > 0 ? -EIO : err;
|
|
}
|
|
|
|
static int saa7706h_i2c_transfer(struct i2c_client *client,
|
|
struct i2c_msg *msgs, int num)
|
|
{
|
|
int err = i2c_transfer(client->adapter, msgs, num);
|
|
if (err == num)
|
|
return 0;
|
|
return err > 0 ? -EIO : err;
|
|
}
|
|
|
|
static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[5];
|
|
int pos = 0;
|
|
|
|
buf[pos++] = reg >> 8;
|
|
buf[pos++] = reg;
|
|
buf[pos++] = val >> 16;
|
|
buf[pos++] = val >> 8;
|
|
buf[pos++] = val;
|
|
|
|
return saa7706h_i2c_send(client, buf, pos);
|
|
}
|
|
|
|
static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val,
|
|
int *err)
|
|
{
|
|
return *err ? *err : saa7706h_set_reg24(sd, reg, val);
|
|
}
|
|
|
|
static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[4];
|
|
int pos = 0;
|
|
|
|
buf[pos++] = reg >> 8;
|
|
buf[pos++] = reg;
|
|
buf[pos++] = val >> 8;
|
|
buf[pos++] = val;
|
|
|
|
return saa7706h_i2c_send(client, buf, pos);
|
|
}
|
|
|
|
static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val,
|
|
int *err)
|
|
{
|
|
return *err ? *err : saa7706h_set_reg16(sd, reg, val);
|
|
}
|
|
|
|
static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[2];
|
|
int err;
|
|
u8 regaddr[] = {reg >> 8, reg};
|
|
struct i2c_msg msg[] = {
|
|
{
|
|
.addr = client->addr,
|
|
.len = sizeof(regaddr),
|
|
.buf = regaddr
|
|
},
|
|
{
|
|
.addr = client->addr,
|
|
.flags = I2C_M_RD,
|
|
.len = sizeof(buf),
|
|
.buf = buf
|
|
}
|
|
};
|
|
|
|
err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg));
|
|
if (err)
|
|
return err;
|
|
|
|
return buf[0] << 8 | buf[1];
|
|
}
|
|
|
|
static int saa7706h_unmute(struct v4l2_subdev *sd)
|
|
{
|
|
struct saa7706h_state *state = to_state(sd);
|
|
int err = 0;
|
|
|
|
err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
|
|
SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 |
|
|
SAA7706H_CTRL_PC_RESET_DSP2, &err);
|
|
|
|
/* newer versions of the chip requires a small sleep after reset */
|
|
msleep(1);
|
|
|
|
err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL,
|
|
SAA7706H_CTRL_PLL3_62975MHZ, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2,
|
|
SAA7706H_CL_GEN2_WSEDGE_FALLING, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO,
|
|
0x0e22ff, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err);
|
|
|
|
err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err);
|
|
|
|
err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800,
|
|
&err);
|
|
|
|
err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err);
|
|
|
|
err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905,
|
|
&err);
|
|
if (!err)
|
|
state->muted = 0;
|
|
return err;
|
|
}
|
|
|
|
static int saa7706h_mute(struct v4l2_subdev *sd)
|
|
{
|
|
struct saa7706h_state *state = to_state(sd);
|
|
int err;
|
|
|
|
err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL,
|
|
SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 |
|
|
SAA7706H_CTRL_PC_RESET_DSP2);
|
|
if (!err)
|
|
state->muted = 1;
|
|
return err;
|
|
}
|
|
|
|
static int saa7706h_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct saa7706h_state *state =
|
|
container_of(ctrl->handler, struct saa7706h_state, hdl);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
if (ctrl->val)
|
|
return saa7706h_mute(&state->sd);
|
|
return saa7706h_unmute(&state->sd);
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops saa7706h_ctrl_ops = {
|
|
.s_ctrl = saa7706h_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops empty_ops = {};
|
|
|
|
/*
|
|
* Generic i2c probe
|
|
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
|
|
*/
|
|
|
|
static int saa7706h_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct saa7706h_state *state;
|
|
struct v4l2_subdev *sd;
|
|
int err;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
v4l_info(client, "chip found @ 0x%02x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL);
|
|
if (state == NULL)
|
|
return -ENOMEM;
|
|
sd = &state->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &empty_ops);
|
|
|
|
v4l2_ctrl_handler_init(&state->hdl, 4);
|
|
v4l2_ctrl_new_std(&state->hdl, &saa7706h_ctrl_ops,
|
|
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
|
|
sd->ctrl_handler = &state->hdl;
|
|
err = state->hdl.error;
|
|
if (err)
|
|
goto err;
|
|
|
|
/* check the rom versions */
|
|
err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER);
|
|
if (err < 0)
|
|
goto err;
|
|
if (err != SUPPORTED_DSP1_ROM_VER)
|
|
v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err);
|
|
state->muted = 1;
|
|
|
|
/* startup in a muted state */
|
|
err = saa7706h_mute(sd);
|
|
if (err)
|
|
goto err;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
v4l2_device_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(&state->hdl);
|
|
kfree(to_state(sd));
|
|
|
|
printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int saa7706h_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct saa7706h_state *state = to_state(sd);
|
|
|
|
saa7706h_mute(sd);
|
|
v4l2_device_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(&state->hdl);
|
|
kfree(to_state(sd));
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id saa7706h_id[] = {
|
|
{DRIVER_NAME, 0},
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, saa7706h_id);
|
|
|
|
static struct i2c_driver saa7706h_driver = {
|
|
.driver = {
|
|
.name = DRIVER_NAME,
|
|
},
|
|
.probe = saa7706h_probe,
|
|
.remove = saa7706h_remove,
|
|
.id_table = saa7706h_id,
|
|
};
|
|
|
|
module_i2c_driver(saa7706h_driver);
|
|
|
|
MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver");
|
|
MODULE_AUTHOR("Mocean Laboratories");
|
|
MODULE_LICENSE("GPL v2");
|