media: i2c: ov4689: Clean up and annotate the register table

Many values in the register table are actually power-on defaults. Remove those and also unused HDR exposures and gains. Annotate the remaining values using the publicly available datasheet to facilitate further development. No functional change intended. Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: i2c: ov4689: Clean up and annotate the register table
Many values in the register table are actually power-on defaults. Remove those and also unused HDR exposures and gains. Annotate the remaining values using the publicly available datasheet to facilitate further development. No functional change intended. Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
af9874c9 · Mikhail Rudenko · Mauro Carvalho Chehab · 19b372d9 · af9874c9
Commit af9874c9 authored Apr 16, 2024 by Mikhail Rudenko Committed by Mauro Carvalho Chehab Apr 26, 2024
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drivers/media/i2c/ov4689.c drivers/media/i2c/ov4689.c +119 -86

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--- a/drivers/media/i2c/ov4689.c
+++ b/drivers/media/i2c/ov4689.c
@@ -3,7 +3,7 @@
 * ov4689 driver
 *
 * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
- * Copyright (C) 2022 Mikhail Rudenko
+ * Copyright (C) 2022, 2024 Mikhail Rudenko
 */

 #include <linux/clk.h>
@@ -123,91 +123,124 @@ struct ov4689_gain_range {
 * mipi_datarate per lane 1008Mbps
 */
 static const struct regval ov4689_2688x1520_regs[] = {
-	{0x0103, 0x01}, {0x3638, 0x00}, {0x0300, 0x00},
-	{0x0302, 0x2a}, {0x0303, 0x00}, {0x0304, 0x03},
-	{0x030b, 0x00}, {0x030d, 0x1e}, {0x030e, 0x04},
-	{0x030f, 0x01}, {0x0312, 0x01}, {0x031e, 0x00},
-	{0x3000, 0x20}, {0x3002, 0x00}, {0x3018, 0x72},
-	{0x3020, 0x93}, {0x3021, 0x03}, {0x3022, 0x01},
-	{0x3031, 0x0a}, {0x303f, 0x0c}, {0x3305, 0xf1},
-	{0x3307, 0x04}, {0x3309, 0x29}, {0x3500, 0x00},
-	{0x3501, 0x60}, {0x3502, 0x00}, {0x3503, 0x04},
-	{0x3504, 0x00}, {0x3505, 0x00}, {0x3506, 0x00},
-	{0x3507, 0x00}, {0x3508, 0x00}, {0x3509, 0x80},
-	{0x350a, 0x00}, {0x350b, 0x00}, {0x350c, 0x00},
-	{0x350d, 0x00}, {0x350e, 0x00}, {0x350f, 0x80},
-	{0x3510, 0x00}, {0x3511, 0x00}, {0x3512, 0x00},
-	{0x3513, 0x00}, {0x3514, 0x00}, {0x3515, 0x80},
-	{0x3516, 0x00}, {0x3517, 0x00}, {0x3518, 0x00},
-	{0x3519, 0x00}, {0x351a, 0x00}, {0x351b, 0x80},
-	{0x351c, 0x00}, {0x351d, 0x00}, {0x351e, 0x00},
-	{0x351f, 0x00}, {0x3520, 0x00}, {0x3521, 0x80},
-	{0x3522, 0x08}, {0x3524, 0x08}, {0x3526, 0x08},
-	{0x3528, 0x08}, {0x352a, 0x08}, {0x3602, 0x00},
-	{0x3603, 0x40}, {0x3604, 0x02}, {0x3605, 0x00},
-	{0x3606, 0x00}, {0x3607, 0x00}, {0x3609, 0x12},
-	{0x360a, 0x40}, {0x360c, 0x08}, {0x360f, 0xe5},
-	{0x3608, 0x8f}, {0x3611, 0x00}, {0x3613, 0xf7},
-	{0x3616, 0x58}, {0x3619, 0x99}, {0x361b, 0x60},
-	{0x361c, 0x7a}, {0x361e, 0x79}, {0x361f, 0x02},
-	{0x3632, 0x00}, {0x3633, 0x10}, {0x3634, 0x10},
-	{0x3635, 0x10}, {0x3636, 0x15}, {0x3646, 0x86},
-	{0x364a, 0x0b}, {0x3700, 0x17}, {0x3701, 0x22},
-	{0x3703, 0x10}, {0x370a, 0x37}, {0x3705, 0x00},
-	{0x3706, 0x63}, {0x3709, 0x3c}, {0x370b, 0x01},
-	{0x370c, 0x30}, {0x3710, 0x24}, {0x3711, 0x0c},
-	{0x3716, 0x00}, {0x3720, 0x28}, {0x3729, 0x7b},
-	{0x372a, 0x84}, {0x372b, 0xbd}, {0x372c, 0xbc},
-	{0x372e, 0x52}, {0x373c, 0x0e}, {0x373e, 0x33},
-	{0x3743, 0x10}, {0x3744, 0x88}, {0x3745, 0xc0},
-	{0x374a, 0x43}, {0x374c, 0x00}, {0x374e, 0x23},
-	{0x3751, 0x7b}, {0x3752, 0x84}, {0x3753, 0xbd},
-	{0x3754, 0xbc}, {0x3756, 0x52}, {0x375c, 0x00},
-	{0x3760, 0x00}, {0x3761, 0x00}, {0x3762, 0x00},
-	{0x3763, 0x00}, {0x3764, 0x00}, {0x3767, 0x04},
-	{0x3768, 0x04}, {0x3769, 0x08}, {0x376a, 0x08},
-	{0x376b, 0x20}, {0x376c, 0x00}, {0x376d, 0x00},
-	{0x376e, 0x00}, {0x3773, 0x00}, {0x3774, 0x51},
-	{0x3776, 0xbd}, {0x3777, 0xbd}, {0x3781, 0x18},
-	{0x3783, 0x25}, {0x3798, 0x1b}, {0x3800, 0x00},
-	{0x3801, 0x08}, {0x3802, 0x00}, {0x3803, 0x04},
-	{0x3804, 0x0a}, {0x3805, 0x97}, {0x3806, 0x05},
-	{0x3807, 0xfb}, {0x3808, 0x0a}, {0x3809, 0x80},
-	{0x380a, 0x05}, {0x380b, 0xf0}, {0x380c, 0x0a},
-	{0x380d, 0x0e}, {0x380e, 0x06}, {0x380f, 0x12},
-	{0x3810, 0x00}, {0x3811, 0x08}, {0x3812, 0x00},
-	{0x3813, 0x04}, {0x3814, 0x01}, {0x3815, 0x01},
-	{0x3819, 0x01}, {0x3820, 0x00}, {0x3821, 0x06},
-	{0x3829, 0x00}, {0x382a, 0x01}, {0x382b, 0x01},
-	{0x382d, 0x7f}, {0x3830, 0x04}, {0x3836, 0x01},
-	{0x3837, 0x00}, {0x3841, 0x02}, {0x3846, 0x08},
-	{0x3847, 0x07}, {0x3d85, 0x36}, {0x3d8c, 0x71},
-	{0x3d8d, 0xcb}, {0x3f0a, 0x00}, {0x4000, 0xf1},
-	{0x4001, 0x40}, {0x4002, 0x04}, {0x4003, 0x14},
-	{0x400e, 0x00}, {0x4011, 0x00}, {0x401a, 0x00},
-	{0x401b, 0x00}, {0x401c, 0x00}, {0x401d, 0x00},
-	{0x401f, 0x00}, {0x4020, 0x00}, {0x4021, 0x10},
-	{0x4022, 0x07}, {0x4023, 0xcf}, {0x4024, 0x09},
-	{0x4025, 0x60}, {0x4026, 0x09}, {0x4027, 0x6f},
-	{0x4028, 0x00}, {0x4029, 0x02}, {0x402a, 0x06},
-	{0x402b, 0x04}, {0x402c, 0x02}, {0x402d, 0x02},
-	{0x402e, 0x0e}, {0x402f, 0x04}, {0x4302, 0xff},
-	{0x4303, 0xff}, {0x4304, 0x00}, {0x4305, 0x00},
-	{0x4306, 0x00}, {0x4308, 0x02}, {0x4500, 0x6c},
-	{0x4501, 0xc4}, {0x4502, 0x40}, {0x4503, 0x01},
-	{0x4601, 0xa7}, {0x4800, 0x04}, {0x4813, 0x08},
-	{0x481f, 0x40}, {0x4829, 0x78}, {0x4837, 0x10},
-	{0x4b00, 0x2a}, {0x4b0d, 0x00}, {0x4d00, 0x04},
-	{0x4d01, 0x42}, {0x4d02, 0xd1}, {0x4d03, 0x93},
-	{0x4d04, 0xf5}, {0x4d05, 0xc1}, {0x5000, 0xf3},
-	{0x5001, 0x11}, {0x5004, 0x00}, {0x500a, 0x00},
-	{0x500b, 0x00}, {0x5032, 0x00}, {0x5040, 0x00},
-	{0x5050, 0x0c}, {0x5500, 0x00}, {0x5501, 0x10},
-	{0x5502, 0x01}, {0x5503, 0x0f}, {0x8000, 0x00},
-	{0x8001, 0x00}, {0x8002, 0x00}, {0x8003, 0x00},
-	{0x8004, 0x00}, {0x8005, 0x00}, {0x8006, 0x00},
-	{0x8007, 0x00}, {0x8008, 0x00}, {0x3638, 0x00},
-	{REG_NULL, 0x00},
+	/* System control*/
+	{ 0x0103, 0x01 }, /* SC_CTRL0103 software_reset = 1 */
+	{ 0x3000, 0x20 }, /* SC_CMMN_PAD_OEN0 FSIN_output_enable = 1 */
+	{ 0x3021, 0x03 }, /*
+			   * SC_CMMN_MISC_CTRL fst_stby_ctr = 0,
+			   * sleep_no_latch_enable = 0
+			   */
+
+	/* AEC PK */
+	{ 0x3503, 0x04 }, /* AEC_MANUAL gain_input_as_sensor_gain_format = 1 */
+	{ 0x352a, 0x08 }, /* DIG_GAIN_FRAC_LONG dig_gain_long[14:8] = 0x08 (2x) */
+
+	/* ADC and analog control*/
+	{ 0x3603, 0x40 },
+	{ 0x3604, 0x02 },
+	{ 0x3609, 0x12 },
+	{ 0x360c, 0x08 },
+	{ 0x360f, 0xe5 },
+	{ 0x3608, 0x8f },
+	{ 0x3611, 0x00 },
+	{ 0x3613, 0xf7 },
+	{ 0x3616, 0x58 },
+	{ 0x3619, 0x99 },
+	{ 0x361b, 0x60 },
+	{ 0x361e, 0x79 },
+	{ 0x3634, 0x10 },
+	{ 0x3635, 0x10 },
+	{ 0x3636, 0x15 },
+	{ 0x3646, 0x86 },
+	{ 0x364a, 0x0b },
+
+	/* Sensor control */
+	{ 0x3700, 0x17 },
+	{ 0x3701, 0x22 },
+	{ 0x3703, 0x10 },
+	{ 0x370a, 0x37 },
+	{ 0x3706, 0x63 },
+	{ 0x3709, 0x3c },
+	{ 0x370c, 0x30 },
+	{ 0x3710, 0x24 },
+	{ 0x3720, 0x28 },
+	{ 0x3729, 0x7b },
+	{ 0x372b, 0xbd },
+	{ 0x372c, 0xbc },
+	{ 0x372e, 0x52 },
+	{ 0x373c, 0x0e },
+	{ 0x373e, 0x33 },
+	{ 0x3743, 0x10 },
+	{ 0x3744, 0x88 },
+	{ 0x3745, 0xc0 },
+	{ 0x374c, 0x00 },
+	{ 0x374e, 0x23 },
+	{ 0x3751, 0x7b },
+	{ 0x3753, 0xbd },
+	{ 0x3754, 0xbc },
+	{ 0x3756, 0x52 },
+	{ 0x376b, 0x20 },
+	{ 0x3774, 0x51 },
+	{ 0x3776, 0xbd },
+	{ 0x3777, 0xbd },
+	{ 0x3781, 0x18 },
+	{ 0x3783, 0x25 },
+	{ 0x3798, 0x1b },
+
+	/* Timing control */
+	{ 0x3801, 0x08 }, /* H_CROP_START_L h_crop_start[7:0] = 0x08 */
+	{ 0x3805, 0x97 }, /* H_CROP_END_L h_crop_end[7:0] = 0x97 */
+	{ 0x380c, 0x0a }, /* TIMING_HTS_H hts[14:8] = 0x0a */
+	{ 0x380d, 0x0e }, /* TIMING_HTS_L hts[7:0] = 0x0e */
+	{ 0x3811, 0x08 }, /* H_WIN_OFF_L h_win_off[7:0] = 0x08*/
+	{ 0x3813, 0x04 }, /* V_WIN_OFF_L v_win_off[7:0] = 0x04 */
+	{ 0x3819, 0x01 }, /* VSYNC_END_L vsync_end_point[7:0] = 0x01 */
+	{ 0x3821, 0x06 }, /* TIMING_FORMAT2 array_h_mirror = 1, digital_h_mirror = 1 */
+
+	/* OTP control */
+	{ 0x3d85, 0x36 }, /* OTP_REG85 OTP_power_up_load_setting_enable = 1,
+			   * OTP_power_up_load_data_enable = 1,
+			   * OTP_bist_select = 1 (compare with zero)
+			   */
+	{ 0x3d8c, 0x71 }, /* OTP_SETTING_STT_ADDRESS_H */
+	{ 0x3d8d, 0xcb }, /* OTP_SETTING_STT_ADDRESS_L */
+
+	/* BLC registers*/
+	{ 0x4001, 0x40 }, /* DEBUG_MODE */
+	{ 0x401b, 0x00 }, /* DEBUG_MODE */
+	{ 0x401d, 0x00 }, /* DEBUG_MODE */
+	{ 0x401f, 0x00 }, /* DEBUG_MODE */
+	{ 0x4020, 0x00 }, /* ANCHOR_LEFT_START_H anchor_left_start[11:8] = 0 */
+	{ 0x4021, 0x10 }, /* ANCHOR_LEFT_START_L anchor_left_start[7:0] = 0x10 */
+	{ 0x4022, 0x07 }, /* ANCHOR_LEFT_END_H anchor_left_end[11:8] = 0x07 */
+	{ 0x4023, 0xcf }, /* ANCHOR_LEFT_END_L anchor_left_end[7:0] = 0xcf */
+	{ 0x4024, 0x09 }, /* ANCHOR_RIGHT_START_H anchor_right_start[11:8] = 0x09 */
+	{ 0x4025, 0x60 }, /* ANCHOR_RIGHT_START_L anchor_right_start[7:0] = 0x60 */
+	{ 0x4026, 0x09 }, /* ANCHOR_RIGHT_END_H anchor_right_end[11:8] = 0x09 */
+	{ 0x4027, 0x6f }, /* ANCHOR_RIGHT_END_L anchor_right_end[7:0] = 0x6f */
+
+	/* ADC sync control */
+	{ 0x4500, 0x6c }, /* ADC_SYNC_CTRL */
+	{ 0x4503, 0x01 }, /* ADC_SYNC_CTRL */
+
+	/* VFIFO */
+	{ 0x4601, 0xa7 }, /* VFIFO_CTRL_01 r_vfifo_read_start[7:0] = 0xa7 */
+
+	/* Temperature monitor */
+	{ 0x4d00, 0x04 }, /* TPM_CTRL_00 tmp_slope[15:8] = 0x04 */
+	{ 0x4d01, 0x42 }, /* TPM_CTRL_01 tmp_slope[7:0] = 0x42 */
+	{ 0x4d02, 0xd1 }, /* TPM_CTRL_02 tpm_offset[31:24] = 0xd1 */
+	{ 0x4d03, 0x93 }, /* TPM_CTRL_03 tpm_offset[23:16] = 0x93 */
+	{ 0x4d04, 0xf5 }, /* TPM_CTRL_04 tpm_offset[15:8]  = 0xf5 */
+	{ 0x4d05, 0xc1 }, /* TPM_CTRL_05 tpm_offset[7:0]   = 0xc1 */
+
+	/* pre-ISP control */
+	{ 0x5050, 0x0c }, /* DEBUG_MODE */
+
+	/* OTP-DPC control */
+	{ 0x5501, 0x10 }, /* OTP_DPC_START_L otp_start_address[7:0] = 0x10 */
+	{ 0x5503, 0x0f }, /* OTP_DPC_END_L otp_end_address[7:0] = 0x0f */
+	{ REG_NULL, 0x00 },
 };

 static const struct ov4689_mode supported_modes[] = {