Merge pull request 'jetpack-4.4.1' (#8 ) from jetpack-4.4.1 into master

Reviewed-on: #8
Clean up comments in the code
2021-03-16 04:29:32 +00:00 · 2021-03-15 22:27:57 -06:00 · 2021-03-15 22:22:34 -06:00 · 2021-03-15 21:57:27 -06:00 · 2021-03-10 18:23:42 -06:00 · 2021-03-10 17:59:54 -06:00
3 changed files with 48 additions and 61 deletions
--- a/README.md
+++ b/README.md
@ -105,23 +105,24 @@ As the AE has interdependency with the digital gain. This gain it's and operatio
   * Digital gain equation:
   *
   *  RANGE: 1x, 7.97x
-   *  GAIN: VAL / STEPS;
   *  STEPS: 1/32
   *
-   *  SCALE FACTOR = 100.000
+   *  SCALE FACTOR = 3
   *
-   *  min_gain_val = 100.000
-   *  max_gain_val = 797.000
-   *  step_gain_val = 3125
+   *  min_gain_val = 102
+   *  max_gain_val = 160
+   *  gain_factor = 3
+   *
+   *  gain accepts mapping to range 32 - 53
   */
-
-   MT9M021 sensor datasheet:
-   * <a href="https://files.niemo.de/aptina_pdfs/MT9M021-M031_Developer_Guide.pdf">MT9M021 Developer Guide</a>
 ```
+   MT9M021 sensor datasheet:
 	
-Where, the min_gain_val, max_gain_val, step_gain_val are part of the cameras' DTSI (tegra186-tx2-spiri-camera.dtsi) fixed parameters
-as per the datasheet. The step_gain_val consists of the steps (1/32 for the register) scaled to a value that makes this fraction become an significant
-in integer.
+   * <a href="https://files.niemo.de/aptina_pdfs/MT9M021-M031_Developer_Guide.pdf">MT9M021 Developer Guide</a>
+
+
+Where, the `min_gain_val, max_gain_val, step_gain_val` are part of the cameras' DTSI (tegra186-tx2-spiri-camera.dtsi) fixed parameters
+as per the datasheet. The `gain` consists on the steps (1x + n * 1/32 for the register) scaled to a value that represents this fraction in an integer value for the gain register.

 #### Kernel Changes

--- a/hardware/nvidia-spiri/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-tx2-spiri-camera.dtsi
+++ b/hardware/nvidia-spiri/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-tx2-spiri-camera.dtsi
@ -98,13 +98,13 @@ i2c8 = "/i2c@31e0000";
 				inherent_gain = "1";
 				pix_clk_hz = "74250000";

-			        gain_factor = "3125";
+        gain_factor = "3";
        framerate_factor = "1000000";
        exposure_factor = "1000000";
-				min_gain_val = "100000";
-        max_gain_val = "796000";
+        min_gain_val = "102";
+        max_gain_val = "160";
        step_gain_val = "1";
-				default_gain = "100000";
+        default_gain = "102";
 				min_hdr_ratio = "1";
 				max_hdr_ratio = "1";

@ -113,10 +113,10 @@ i2c8 = "/i2c@31e0000";
 				step_framerate = "1";
        default_framerate = "60000000"; // 60.0 fps

-				min_exp_time = "500"; // us
-				max_exp_time = "16000"; // us
+        min_exp_time = "24000"; // us
+        max_exp_time = "74000"; // us
        step_exp_time = "1";
-        default_exp_time = "12000"; // us
+        default_exp_time = "50000"; // us
 			};
 			ports {  
 				#address-cells = <0x1>;
@ -185,13 +185,13 @@ i2c8 = "/i2c@31e0000";
 				inherent_gain = "1";
 				pix_clk_hz = "74250000";

-			        gain_factor = "3125";
+        gain_factor = "3";
        framerate_factor = "1000000";
        exposure_factor = "1000000";
-				min_gain_val = "100000";
-        max_gain_val = "796000";
+        min_gain_val = "102";
+        max_gain_val = "160" ;
        step_gain_val = "1";
-			        default_gain = "100000";
+        default_gain = "102";
 				min_hdr_ratio = "1";
 				max_hdr_ratio = "1";

@ -200,10 +200,10 @@ i2c8 = "/i2c@31e0000";
 				step_framerate = "1";
        default_framerate = "60000000"; // 60.0 fps

-				min_exp_time = "500"; // us
-				max_exp_time = "16000"; // us
+        min_exp_time = "24000"; // us
+        max_exp_time = "74000"; // us
        step_exp_time = "1";
-              default_exp_time = "12000"; // us
+        default_exp_time = "50000"; // us
 			};
 			ports {  
 				#address-cells = <0x1>;
--- a/kernel/nvidia-spiri/drivers/media/i2c/mt9m021.c
+++ b/kernel/nvidia-spiri/drivers/media/i2c/mt9m021.c
@ -135,8 +135,8 @@
 #define MT9M021_ANALOG_GAIN_SHIFT       4
 #define MT9M021_ANALOG_GAIN_MASK        0x0030

-#define MT9M021_GLOBAL_GAIN_MIN         100000
-#define MT9M021_GLOBAL_GAIN_MAX         796000
+#define MT9M021_GLOBAL_GAIN_MIN         100
+#define MT9M021_GLOBAL_GAIN_MAX         762
 #define MT9M021_GLOBAL_GAIN_DEF         100

 #define MT9M021_COARSE_INT_TIME_MIN     0x0001
@ -417,18 +417,17 @@ static int mt9m021_set_gain(struct tegracam_device *tc_dev, s64 val)
   * Digital gain equation:
   *
   *  RANGE: 1x, 7.97x
-   *  GAIN: VAL / STEPS;
   *  STEPS: 1/32
   *
-   *  SCALE FACTOR = 100.000
+   *  SCALE FACTOR = 3
   *
-   *  min_gain_val = 100.000
-   *  max_gain_val = 797.000
-   *  gain_factor = 3125
+   *  min_gain_val = 102
+   *  max_gain_val = 160
+   *  gain_factor = 3
   *
-   *  gain maps to range 32 - 255
+   *  gain accepts mapping to range 32 - 53
   */
-  gain = val / 3125;
+  gain = val / 3;

  /* Update analog gain multiplier */
  err = mt9m021_read_reg16(s_data, MT9M021_DIGITAL_TEST, &reg16);
@ -439,14 +438,12 @@ static int mt9m021_set_gain(struct tegracam_device *tc_dev, s64 val)
      ((gain_mul << MT9M021_ANALOG_GAIN_SHIFT) &
       MT9M021_ANALOG_GAIN_MASK);
  err = mt9m021_write_reg16(s_data, MT9M021_DIGITAL_TEST, reg16);
-//  msleep(10);
  if (err)
    goto exit;

 	/* Update global gain */
 	err =
      mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN, gain);
-//	msleep(10);
 	if (err)
 		goto exit;
 	err =
@ -520,7 +517,6 @@ static int mt9m021_set_coarse_time(struct mt9m021 *priv, s64 val)
 	err = mt9m021_write_reg16(s_data, MT9M021_COARSE_INT_TIME_CB, val);
 	if (err)
 		return err;
-//	msleep(30);

 	return 0;
 }
@ -571,7 +567,6 @@ static int mt9m021_set_analog_gain(struct tegracam_device *tc_dev, s64 val)
 	    ((val << MT9M021_ANALOG_GAIN_SHIFT) &
 	     MT9M021_ANALOG_GAIN_MASK);
 	err = mt9m021_write_reg16(s_data, MT9M021_DIGITAL_TEST, reg16);
-//	msleep(30);
 	if (err)
 		goto exit;

@ -627,7 +622,6 @@ static int mt9m021_set_digital_gain(struct tegracam_device *tc_dev, s64 val,
 	err = mt9m021_write_reg16(s_data, gain_cb_reg, val);
 	if (err)
 		goto exit;
-//	msleep(30);

 	return 0;

@ -650,7 +644,6 @@ static int mt9m021_set_test_pattern(struct tegracam_device *tc_dev, s32 val)
 	else
 		err = mt9m021_write_reg16(s_data, MT9M021_TEST_PATTERN,
 					  val);
-//	msleep(30);
 	if (err)
 		goto exit;

@ -963,15 +956,10 @@ static int mt9m021_col_correction(struct mt9m021 *priv)
 	if (ret < 0)
 		return ret;

-//	msleep(200);
-//  usleep(200);
-
 	/* Enable Streaming */
 	ret = mt9m021_write_table(priv, mode_table[MT9M021_MODE_START_STREAM]);
 	if (ret < 0)
 		return ret;
-//	msleep(200);
-//  usleep(200);

 	/* Disable Streaming */
 	ret = mt9m021_write_table(priv, mode_table[MT9M021_MODE_STOP_STREAM]);
@ -982,8 +970,6 @@ static int mt9m021_col_correction(struct mt9m021 *priv)
 	ret = mt9m021_write_reg16(s_data, MT9M021_COLUMN_CORRECTION, 0xE007);
 	if (ret < 0)
 		return ret;
-//  msleep(200);
-//  usleep(200);

 	return ret;
 }
Author	SHA1	Message	Date
dchvs	0c8e4c04c7	Merge pull request 'jetpack-4.4.1' (#8 ) from jetpack-4.4.1 into master Reviewed-on: #8	2021-03-16 04:29:32 +00:00
dchvs	e00ce6abcc	Clean up comments in the code	2021-03-15 22:27:57 -06:00
dchvs	d4df26e9f9	documentation: Fix gain equation on Driver	2021-03-15 22:22:34 -06:00
dchvs	809d88dd93	documentation: Update README	2021-03-15 21:57:27 -06:00
dchvs	e4327010bd	Fix dotted image -- with fixed blinking	2021-03-10 18:23:42 -06:00
dchvs	abc331988f	Fix dotted image -- still have some blinking	2021-03-10 17:59:54 -06:00
dchvs	5cede1ef85	Fix dotted image	2021-03-10 13:56:55 -06:00