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2128 lines
52 KiB
2128 lines
52 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* imx274.c - IMX274 CMOS Image Sensor driver |
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* |
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* Copyright (C) 2017, Leopard Imaging, Inc. |
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* |
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* Leon Luo <[email protected]> |
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* Edwin Zou <[email protected]> |
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* Luca Ceresoli <[email protected]> |
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*/ |
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|
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#include <linux/clk.h> |
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#include <linux/delay.h> |
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#include <linux/gpio.h> |
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#include <linux/gpio/consumer.h> |
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#include <linux/i2c.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/of_gpio.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/consumer.h> |
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#include <linux/slab.h> |
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#include <linux/v4l2-mediabus.h> |
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#include <linux/videodev2.h> |
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#include <media/v4l2-ctrls.h> |
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#include <media/v4l2-device.h> |
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#include <media/v4l2-subdev.h> |
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|
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/* |
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* See "SHR, SVR Setting" in datasheet |
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*/ |
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#define IMX274_DEFAULT_FRAME_LENGTH (4550) |
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#define IMX274_MAX_FRAME_LENGTH (0x000fffff) |
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|
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/* |
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* See "Frame Rate Adjustment" in datasheet |
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*/ |
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#define IMX274_PIXCLK_CONST1 (72000000) |
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#define IMX274_PIXCLK_CONST2 (1000000) |
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/* |
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* The input gain is shifted by IMX274_GAIN_SHIFT to get |
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* decimal number. The real gain is |
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* (float)input_gain_value / (1 << IMX274_GAIN_SHIFT) |
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*/ |
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#define IMX274_GAIN_SHIFT (8) |
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#define IMX274_GAIN_SHIFT_MASK ((1 << IMX274_GAIN_SHIFT) - 1) |
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|
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/* |
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* See "Analog Gain" and "Digital Gain" in datasheet |
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* min gain is 1X |
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* max gain is calculated based on IMX274_GAIN_REG_MAX |
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*/ |
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#define IMX274_GAIN_REG_MAX (1957) |
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#define IMX274_MIN_GAIN (0x01 << IMX274_GAIN_SHIFT) |
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#define IMX274_MAX_ANALOG_GAIN ((2048 << IMX274_GAIN_SHIFT)\ |
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/ (2048 - IMX274_GAIN_REG_MAX)) |
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#define IMX274_MAX_DIGITAL_GAIN (8) |
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#define IMX274_DEF_GAIN (20 << IMX274_GAIN_SHIFT) |
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#define IMX274_GAIN_CONST (2048) /* for gain formula */ |
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|
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/* |
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* 1 line time in us = (HMAX / 72), minimal is 4 lines |
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*/ |
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#define IMX274_MIN_EXPOSURE_TIME (4 * 260 / 72) |
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|
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#define IMX274_MAX_WIDTH (3840) |
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#define IMX274_MAX_HEIGHT (2160) |
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#define IMX274_MAX_FRAME_RATE (120) |
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#define IMX274_MIN_FRAME_RATE (5) |
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#define IMX274_DEF_FRAME_RATE (60) |
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|
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/* |
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* register SHR is limited to (SVR value + 1) x VMAX value - 4 |
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*/ |
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#define IMX274_SHR_LIMIT_CONST (4) |
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|
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/* |
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* Min and max sensor reset delay (microseconds) |
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*/ |
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#define IMX274_RESET_DELAY1 (2000) |
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#define IMX274_RESET_DELAY2 (2200) |
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|
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/* |
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* shift and mask constants |
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*/ |
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#define IMX274_SHIFT_8_BITS (8) |
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#define IMX274_SHIFT_16_BITS (16) |
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#define IMX274_MASK_LSB_2_BITS (0x03) |
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#define IMX274_MASK_LSB_3_BITS (0x07) |
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#define IMX274_MASK_LSB_4_BITS (0x0f) |
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#define IMX274_MASK_LSB_8_BITS (0x00ff) |
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#define DRIVER_NAME "IMX274" |
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/* |
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* IMX274 register definitions |
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*/ |
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#define IMX274_SHR_REG_MSB 0x300D /* SHR */ |
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#define IMX274_SHR_REG_LSB 0x300C /* SHR */ |
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#define IMX274_SVR_REG_MSB 0x300F /* SVR */ |
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#define IMX274_SVR_REG_LSB 0x300E /* SVR */ |
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#define IMX274_HTRIM_EN_REG 0x3037 |
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#define IMX274_HTRIM_START_REG_LSB 0x3038 |
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#define IMX274_HTRIM_START_REG_MSB 0x3039 |
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#define IMX274_HTRIM_END_REG_LSB 0x303A |
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#define IMX274_HTRIM_END_REG_MSB 0x303B |
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#define IMX274_VWIDCUTEN_REG 0x30DD |
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#define IMX274_VWIDCUT_REG_LSB 0x30DE |
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#define IMX274_VWIDCUT_REG_MSB 0x30DF |
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#define IMX274_VWINPOS_REG_LSB 0x30E0 |
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#define IMX274_VWINPOS_REG_MSB 0x30E1 |
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#define IMX274_WRITE_VSIZE_REG_LSB 0x3130 |
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#define IMX274_WRITE_VSIZE_REG_MSB 0x3131 |
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#define IMX274_Y_OUT_SIZE_REG_LSB 0x3132 |
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#define IMX274_Y_OUT_SIZE_REG_MSB 0x3133 |
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#define IMX274_VMAX_REG_1 0x30FA /* VMAX, MSB */ |
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#define IMX274_VMAX_REG_2 0x30F9 /* VMAX */ |
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#define IMX274_VMAX_REG_3 0x30F8 /* VMAX, LSB */ |
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#define IMX274_HMAX_REG_MSB 0x30F7 /* HMAX */ |
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#define IMX274_HMAX_REG_LSB 0x30F6 /* HMAX */ |
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#define IMX274_ANALOG_GAIN_ADDR_LSB 0x300A /* ANALOG GAIN LSB */ |
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#define IMX274_ANALOG_GAIN_ADDR_MSB 0x300B /* ANALOG GAIN MSB */ |
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#define IMX274_DIGITAL_GAIN_REG 0x3012 /* Digital Gain */ |
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#define IMX274_VFLIP_REG 0x301A /* VERTICAL FLIP */ |
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#define IMX274_TEST_PATTERN_REG 0x303D /* TEST PATTERN */ |
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#define IMX274_STANDBY_REG 0x3000 /* STANDBY */ |
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#define IMX274_TABLE_WAIT_MS 0 |
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#define IMX274_TABLE_END 1 |
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|
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/* regulator supplies */ |
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static const char * const imx274_supply_names[] = { |
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"vddl", /* IF (1.2V) supply */ |
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"vdig", /* Digital Core (1.8V) supply */ |
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"vana", /* Analog (2.8V) supply */ |
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}; |
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#define IMX274_NUM_SUPPLIES ARRAY_SIZE(imx274_supply_names) |
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/* |
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* imx274 I2C operation related structure |
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*/ |
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struct reg_8 { |
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u16 addr; |
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u8 val; |
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}; |
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static const struct regmap_config imx274_regmap_config = { |
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.reg_bits = 16, |
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.val_bits = 8, |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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/* |
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* Parameters for each imx274 readout mode. |
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* |
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* These are the values to configure the sensor in one of the |
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* implemented modes. |
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* |
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* @init_regs: registers to initialize the mode |
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* @wbin_ratio: width downscale factor (e.g. 3 for 1280; 3 = 3840/1280) |
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* @hbin_ratio: height downscale factor (e.g. 3 for 720; 3 = 2160/720) |
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* @min_frame_len: Minimum frame length for each mode (see "Frame Rate |
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* Adjustment (CSI-2)" in the datasheet) |
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* @min_SHR: Minimum SHR register value (see "Shutter Setting (CSI-2)" in the |
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* datasheet) |
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* @max_fps: Maximum frames per second |
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* @nocpiop: Number of clocks per internal offset period (see "Integration Time |
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* in Each Readout Drive Mode (CSI-2)" in the datasheet) |
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*/ |
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struct imx274_mode { |
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const struct reg_8 *init_regs; |
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u8 wbin_ratio; |
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u8 hbin_ratio; |
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int min_frame_len; |
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int min_SHR; |
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int max_fps; |
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int nocpiop; |
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}; |
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|
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/* |
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* imx274 test pattern related structure |
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*/ |
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enum { |
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TEST_PATTERN_DISABLED = 0, |
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TEST_PATTERN_ALL_000H, |
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TEST_PATTERN_ALL_FFFH, |
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TEST_PATTERN_ALL_555H, |
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TEST_PATTERN_ALL_AAAH, |
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TEST_PATTERN_VSP_5AH, /* VERTICAL STRIPE PATTERN 555H/AAAH */ |
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TEST_PATTERN_VSP_A5H, /* VERTICAL STRIPE PATTERN AAAH/555H */ |
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TEST_PATTERN_VSP_05H, /* VERTICAL STRIPE PATTERN 000H/555H */ |
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TEST_PATTERN_VSP_50H, /* VERTICAL STRIPE PATTERN 555H/000H */ |
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TEST_PATTERN_VSP_0FH, /* VERTICAL STRIPE PATTERN 000H/FFFH */ |
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TEST_PATTERN_VSP_F0H, /* VERTICAL STRIPE PATTERN FFFH/000H */ |
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TEST_PATTERN_H_COLOR_BARS, |
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TEST_PATTERN_V_COLOR_BARS, |
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}; |
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static const char * const tp_qmenu[] = { |
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"Disabled", |
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"All 000h Pattern", |
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"All FFFh Pattern", |
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"All 555h Pattern", |
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"All AAAh Pattern", |
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"Vertical Stripe (555h / AAAh)", |
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"Vertical Stripe (AAAh / 555h)", |
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"Vertical Stripe (000h / 555h)", |
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"Vertical Stripe (555h / 000h)", |
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"Vertical Stripe (000h / FFFh)", |
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"Vertical Stripe (FFFh / 000h)", |
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"Vertical Color Bars", |
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"Horizontal Color Bars", |
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}; |
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/* |
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* All-pixel scan mode (10-bit) |
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* imx274 mode1(refer to datasheet) register configuration with |
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* 3840x2160 resolution, raw10 data and mipi four lane output |
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*/ |
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static const struct reg_8 imx274_mode1_3840x2160_raw10[] = { |
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{0x3004, 0x01}, |
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{0x3005, 0x01}, |
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{0x3006, 0x00}, |
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{0x3007, 0xa2}, |
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{0x3018, 0xA2}, /* output XVS, HVS */ |
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{0x306B, 0x05}, |
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{0x30E2, 0x01}, |
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{0x30EE, 0x01}, |
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{0x3342, 0x0A}, |
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{0x3343, 0x00}, |
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{0x3344, 0x16}, |
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{0x3345, 0x00}, |
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{0x33A6, 0x01}, |
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{0x3528, 0x0E}, |
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{0x3554, 0x1F}, |
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{0x3555, 0x01}, |
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{0x3556, 0x01}, |
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{0x3557, 0x01}, |
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{0x3558, 0x01}, |
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{0x3559, 0x00}, |
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{0x355A, 0x00}, |
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{0x35BA, 0x0E}, |
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{0x366A, 0x1B}, |
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{0x366B, 0x1A}, |
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{0x366C, 0x19}, |
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{0x366D, 0x17}, |
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{0x3A41, 0x08}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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/* |
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* Horizontal/vertical 2/2-line binning |
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* (Horizontal and vertical weightedbinning, 10-bit) |
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* imx274 mode3(refer to datasheet) register configuration with |
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* 1920x1080 resolution, raw10 data and mipi four lane output |
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*/ |
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static const struct reg_8 imx274_mode3_1920x1080_raw10[] = { |
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{0x3004, 0x02}, |
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{0x3005, 0x21}, |
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{0x3006, 0x00}, |
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{0x3007, 0xb1}, |
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{0x3018, 0xA2}, /* output XVS, HVS */ |
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{0x306B, 0x05}, |
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{0x30E2, 0x02}, |
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{0x30EE, 0x01}, |
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{0x3342, 0x0A}, |
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{0x3343, 0x00}, |
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{0x3344, 0x1A}, |
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{0x3345, 0x00}, |
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{0x33A6, 0x01}, |
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{0x3528, 0x0E}, |
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{0x3554, 0x00}, |
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{0x3555, 0x01}, |
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{0x3556, 0x01}, |
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{0x3557, 0x01}, |
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{0x3558, 0x01}, |
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{0x3559, 0x00}, |
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{0x355A, 0x00}, |
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{0x35BA, 0x0E}, |
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{0x366A, 0x1B}, |
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{0x366B, 0x1A}, |
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{0x366C, 0x19}, |
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{0x366D, 0x17}, |
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{0x3A41, 0x08}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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/* |
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* Vertical 2/3 subsampling binning horizontal 3 binning |
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* imx274 mode5(refer to datasheet) register configuration with |
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* 1280x720 resolution, raw10 data and mipi four lane output |
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*/ |
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static const struct reg_8 imx274_mode5_1280x720_raw10[] = { |
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{0x3004, 0x03}, |
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{0x3005, 0x31}, |
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{0x3006, 0x00}, |
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{0x3007, 0xa9}, |
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{0x3018, 0xA2}, /* output XVS, HVS */ |
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{0x306B, 0x05}, |
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{0x30E2, 0x03}, |
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{0x30EE, 0x01}, |
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{0x3342, 0x0A}, |
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{0x3343, 0x00}, |
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{0x3344, 0x1B}, |
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{0x3345, 0x00}, |
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{0x33A6, 0x01}, |
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{0x3528, 0x0E}, |
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{0x3554, 0x00}, |
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{0x3555, 0x01}, |
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{0x3556, 0x01}, |
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{0x3557, 0x01}, |
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{0x3558, 0x01}, |
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{0x3559, 0x00}, |
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{0x355A, 0x00}, |
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{0x35BA, 0x0E}, |
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{0x366A, 0x1B}, |
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{0x366B, 0x19}, |
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{0x366C, 0x17}, |
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{0x366D, 0x17}, |
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{0x3A41, 0x04}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* |
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* Vertical 2/8 subsampling horizontal 3 binning |
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* imx274 mode6(refer to datasheet) register configuration with |
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* 1280x540 resolution, raw10 data and mipi four lane output |
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*/ |
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static const struct reg_8 imx274_mode6_1280x540_raw10[] = { |
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{0x3004, 0x04}, /* mode setting */ |
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{0x3005, 0x31}, |
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{0x3006, 0x00}, |
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{0x3007, 0x02}, /* mode setting */ |
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{0x3018, 0xA2}, /* output XVS, HVS */ |
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{0x306B, 0x05}, |
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{0x30E2, 0x04}, /* mode setting */ |
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|
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{0x30EE, 0x01}, |
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{0x3342, 0x0A}, |
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{0x3343, 0x00}, |
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{0x3344, 0x16}, |
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{0x3345, 0x00}, |
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{0x33A6, 0x01}, |
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{0x3528, 0x0E}, |
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{0x3554, 0x1F}, |
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{0x3555, 0x01}, |
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{0x3556, 0x01}, |
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{0x3557, 0x01}, |
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{0x3558, 0x01}, |
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{0x3559, 0x00}, |
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{0x355A, 0x00}, |
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{0x35BA, 0x0E}, |
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{0x366A, 0x1B}, |
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{0x366B, 0x1A}, |
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{0x366C, 0x19}, |
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{0x366D, 0x17}, |
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{0x3A41, 0x04}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* |
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* imx274 first step register configuration for |
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* starting stream |
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*/ |
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static const struct reg_8 imx274_start_1[] = { |
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{IMX274_STANDBY_REG, 0x12}, |
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|
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/* PLRD: clock settings */ |
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{0x3120, 0xF0}, |
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{0x3121, 0x00}, |
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{0x3122, 0x02}, |
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{0x3129, 0x9C}, |
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{0x312A, 0x02}, |
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{0x312D, 0x02}, |
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|
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{0x310B, 0x00}, |
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|
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/* PLSTMG */ |
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{0x304C, 0x00}, /* PLSTMG01 */ |
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{0x304D, 0x03}, |
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{0x331C, 0x1A}, |
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{0x331D, 0x00}, |
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{0x3502, 0x02}, |
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{0x3529, 0x0E}, |
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{0x352A, 0x0E}, |
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{0x352B, 0x0E}, |
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{0x3538, 0x0E}, |
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{0x3539, 0x0E}, |
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{0x3553, 0x00}, |
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{0x357D, 0x05}, |
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{0x357F, 0x05}, |
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{0x3581, 0x04}, |
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{0x3583, 0x76}, |
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{0x3587, 0x01}, |
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{0x35BB, 0x0E}, |
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{0x35BC, 0x0E}, |
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{0x35BD, 0x0E}, |
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{0x35BE, 0x0E}, |
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{0x35BF, 0x0E}, |
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{0x366E, 0x00}, |
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{0x366F, 0x00}, |
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{0x3670, 0x00}, |
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{0x3671, 0x00}, |
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|
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/* PSMIPI */ |
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{0x3304, 0x32}, /* PSMIPI1 */ |
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{0x3305, 0x00}, |
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{0x3306, 0x32}, |
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{0x3307, 0x00}, |
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{0x3590, 0x32}, |
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{0x3591, 0x00}, |
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{0x3686, 0x32}, |
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{0x3687, 0x00}, |
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|
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* |
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* imx274 second step register configuration for |
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* starting stream |
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*/ |
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static const struct reg_8 imx274_start_2[] = { |
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{IMX274_STANDBY_REG, 0x00}, |
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{0x303E, 0x02}, /* SYS_MODE = 2 */ |
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{IMX274_TABLE_END, 0x00} |
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}; |
|
|
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/* |
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* imx274 third step register configuration for |
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* starting stream |
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*/ |
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static const struct reg_8 imx274_start_3[] = { |
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{0x30F4, 0x00}, |
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{0x3018, 0xA2}, /* XHS VHS OUTPUT */ |
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* |
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* imx274 register configuration for stopping stream |
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*/ |
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static const struct reg_8 imx274_stop[] = { |
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{IMX274_STANDBY_REG, 0x01}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* |
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* imx274 disable test pattern register configuration |
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*/ |
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static const struct reg_8 imx274_tp_disabled[] = { |
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{0x303C, 0x00}, |
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{0x377F, 0x00}, |
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{0x3781, 0x00}, |
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{0x370B, 0x00}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* |
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* imx274 test pattern register configuration |
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* reg 0x303D defines the test pattern modes |
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*/ |
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static const struct reg_8 imx274_tp_regs[] = { |
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{0x303C, 0x11}, |
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{0x370E, 0x01}, |
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{0x377F, 0x01}, |
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{0x3781, 0x01}, |
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{0x370B, 0x11}, |
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{IMX274_TABLE_END, 0x00} |
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}; |
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|
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/* nocpiop happens to be the same number for the implemented modes */ |
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static const struct imx274_mode imx274_modes[] = { |
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{ |
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/* mode 1, 4K */ |
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.wbin_ratio = 1, /* 3840 */ |
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.hbin_ratio = 1, /* 2160 */ |
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.init_regs = imx274_mode1_3840x2160_raw10, |
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.min_frame_len = 4550, |
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.min_SHR = 12, |
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.max_fps = 60, |
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.nocpiop = 112, |
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}, |
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{ |
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/* mode 3, 1080p */ |
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.wbin_ratio = 2, /* 1920 */ |
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.hbin_ratio = 2, /* 1080 */ |
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.init_regs = imx274_mode3_1920x1080_raw10, |
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.min_frame_len = 2310, |
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.min_SHR = 8, |
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.max_fps = 120, |
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.nocpiop = 112, |
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}, |
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{ |
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/* mode 5, 720p */ |
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.wbin_ratio = 3, /* 1280 */ |
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.hbin_ratio = 3, /* 720 */ |
|
.init_regs = imx274_mode5_1280x720_raw10, |
|
.min_frame_len = 2310, |
|
.min_SHR = 8, |
|
.max_fps = 120, |
|
.nocpiop = 112, |
|
}, |
|
{ |
|
/* mode 6, 540p */ |
|
.wbin_ratio = 3, /* 1280 */ |
|
.hbin_ratio = 4, /* 540 */ |
|
.init_regs = imx274_mode6_1280x540_raw10, |
|
.min_frame_len = 2310, |
|
.min_SHR = 4, |
|
.max_fps = 120, |
|
.nocpiop = 112, |
|
}, |
|
}; |
|
|
|
/* |
|
* struct imx274_ctrls - imx274 ctrl structure |
|
* @handler: V4L2 ctrl handler structure |
|
* @exposure: Pointer to expsure ctrl structure |
|
* @gain: Pointer to gain ctrl structure |
|
* @vflip: Pointer to vflip ctrl structure |
|
* @test_pattern: Pointer to test pattern ctrl structure |
|
*/ |
|
struct imx274_ctrls { |
|
struct v4l2_ctrl_handler handler; |
|
struct v4l2_ctrl *exposure; |
|
struct v4l2_ctrl *gain; |
|
struct v4l2_ctrl *vflip; |
|
struct v4l2_ctrl *test_pattern; |
|
}; |
|
|
|
/* |
|
* struct stim274 - imx274 device structure |
|
* @sd: V4L2 subdevice structure |
|
* @pad: Media pad structure |
|
* @client: Pointer to I2C client |
|
* @ctrls: imx274 control structure |
|
* @crop: rect to be captured |
|
* @compose: compose rect, i.e. output resolution |
|
* @format: V4L2 media bus frame format structure |
|
* (width and height are in sync with the compose rect) |
|
* @frame_rate: V4L2 frame rate structure |
|
* @regmap: Pointer to regmap structure |
|
* @reset_gpio: Pointer to reset gpio |
|
* @supplies: List of analog and digital supply regulators |
|
* @inck: Pointer to sensor input clock |
|
* @lock: Mutex structure |
|
* @mode: Parameters for the selected readout mode |
|
*/ |
|
struct stimx274 { |
|
struct v4l2_subdev sd; |
|
struct media_pad pad; |
|
struct i2c_client *client; |
|
struct imx274_ctrls ctrls; |
|
struct v4l2_rect crop; |
|
struct v4l2_mbus_framefmt format; |
|
struct v4l2_fract frame_interval; |
|
struct regmap *regmap; |
|
struct gpio_desc *reset_gpio; |
|
struct regulator_bulk_data supplies[IMX274_NUM_SUPPLIES]; |
|
struct clk *inck; |
|
struct mutex lock; /* mutex lock for operations */ |
|
const struct imx274_mode *mode; |
|
}; |
|
|
|
#define IMX274_ROUND(dim, step, flags) \ |
|
((flags) & V4L2_SEL_FLAG_GE \ |
|
? roundup((dim), (step)) \ |
|
: ((flags) & V4L2_SEL_FLAG_LE \ |
|
? rounddown((dim), (step)) \ |
|
: rounddown((dim) + (step) / 2, (step)))) |
|
|
|
/* |
|
* Function declaration |
|
*/ |
|
static int imx274_set_gain(struct stimx274 *priv, struct v4l2_ctrl *ctrl); |
|
static int imx274_set_exposure(struct stimx274 *priv, int val); |
|
static int imx274_set_vflip(struct stimx274 *priv, int val); |
|
static int imx274_set_test_pattern(struct stimx274 *priv, int val); |
|
static int imx274_set_frame_interval(struct stimx274 *priv, |
|
struct v4l2_fract frame_interval); |
|
|
|
static inline void msleep_range(unsigned int delay_base) |
|
{ |
|
usleep_range(delay_base * 1000, delay_base * 1000 + 500); |
|
} |
|
|
|
/* |
|
* v4l2_ctrl and v4l2_subdev related operations |
|
*/ |
|
static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) |
|
{ |
|
return &container_of(ctrl->handler, |
|
struct stimx274, ctrls.handler)->sd; |
|
} |
|
|
|
static inline struct stimx274 *to_imx274(struct v4l2_subdev *sd) |
|
{ |
|
return container_of(sd, struct stimx274, sd); |
|
} |
|
|
|
/* |
|
* Writing a register table |
|
* |
|
* @priv: Pointer to device |
|
* @table: Table containing register values (with optional delays) |
|
* |
|
* This is used to write register table into sensor's reg map. |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static int imx274_write_table(struct stimx274 *priv, const struct reg_8 table[]) |
|
{ |
|
struct regmap *regmap = priv->regmap; |
|
int err = 0; |
|
const struct reg_8 *next; |
|
u8 val; |
|
|
|
int range_start = -1; |
|
int range_count = 0; |
|
u8 range_vals[16]; |
|
int max_range_vals = ARRAY_SIZE(range_vals); |
|
|
|
for (next = table;; next++) { |
|
if ((next->addr != range_start + range_count) || |
|
(next->addr == IMX274_TABLE_END) || |
|
(next->addr == IMX274_TABLE_WAIT_MS) || |
|
(range_count == max_range_vals)) { |
|
if (range_count == 1) |
|
err = regmap_write(regmap, |
|
range_start, range_vals[0]); |
|
else if (range_count > 1) |
|
err = regmap_bulk_write(regmap, range_start, |
|
&range_vals[0], |
|
range_count); |
|
else |
|
err = 0; |
|
|
|
if (err) |
|
return err; |
|
|
|
range_start = -1; |
|
range_count = 0; |
|
|
|
/* Handle special address values */ |
|
if (next->addr == IMX274_TABLE_END) |
|
break; |
|
|
|
if (next->addr == IMX274_TABLE_WAIT_MS) { |
|
msleep_range(next->val); |
|
continue; |
|
} |
|
} |
|
|
|
val = next->val; |
|
|
|
if (range_start == -1) |
|
range_start = next->addr; |
|
|
|
range_vals[range_count++] = val; |
|
} |
|
return 0; |
|
} |
|
|
|
static inline int imx274_write_reg(struct stimx274 *priv, u16 addr, u8 val) |
|
{ |
|
int err; |
|
|
|
err = regmap_write(priv->regmap, addr, val); |
|
if (err) |
|
dev_err(&priv->client->dev, |
|
"%s : i2c write failed, %x = %x\n", __func__, |
|
addr, val); |
|
else |
|
dev_dbg(&priv->client->dev, |
|
"%s : addr 0x%x, val=0x%x\n", __func__, |
|
addr, val); |
|
return err; |
|
} |
|
|
|
/** |
|
* imx274_read_mbreg - Read a multibyte register. |
|
* |
|
* Uses a bulk read where possible. |
|
* |
|
* @priv: Pointer to device structure |
|
* @addr: Address of the LSB register. Other registers must be |
|
* consecutive, least-to-most significant. |
|
* @val: Pointer to store the register value (cpu endianness) |
|
* @nbytes: Number of bytes to read (range: [1..3]). |
|
* Other bytes are zet to 0. |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static int imx274_read_mbreg(struct stimx274 *priv, u16 addr, u32 *val, |
|
size_t nbytes) |
|
{ |
|
__le32 val_le = 0; |
|
int err; |
|
|
|
err = regmap_bulk_read(priv->regmap, addr, &val_le, nbytes); |
|
if (err) { |
|
dev_err(&priv->client->dev, |
|
"%s : i2c bulk read failed, %x (%zu bytes)\n", |
|
__func__, addr, nbytes); |
|
} else { |
|
*val = le32_to_cpu(val_le); |
|
dev_dbg(&priv->client->dev, |
|
"%s : addr 0x%x, val=0x%x (%zu bytes)\n", |
|
__func__, addr, *val, nbytes); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* imx274_write_mbreg - Write a multibyte register. |
|
* |
|
* Uses a bulk write where possible. |
|
* |
|
* @priv: Pointer to device structure |
|
* @addr: Address of the LSB register. Other registers must be |
|
* consecutive, least-to-most significant. |
|
* @val: Value to be written to the register (cpu endianness) |
|
* @nbytes: Number of bytes to write (range: [1..3]) |
|
*/ |
|
static int imx274_write_mbreg(struct stimx274 *priv, u16 addr, u32 val, |
|
size_t nbytes) |
|
{ |
|
__le32 val_le = cpu_to_le32(val); |
|
int err; |
|
|
|
err = regmap_bulk_write(priv->regmap, addr, &val_le, nbytes); |
|
if (err) |
|
dev_err(&priv->client->dev, |
|
"%s : i2c bulk write failed, %x = %x (%zu bytes)\n", |
|
__func__, addr, val, nbytes); |
|
else |
|
dev_dbg(&priv->client->dev, |
|
"%s : addr 0x%x, val=0x%x (%zu bytes)\n", |
|
__func__, addr, val, nbytes); |
|
return err; |
|
} |
|
|
|
/* |
|
* Set mode registers to start stream. |
|
* @priv: Pointer to device structure |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static int imx274_mode_regs(struct stimx274 *priv) |
|
{ |
|
int err = 0; |
|
|
|
err = imx274_write_table(priv, imx274_start_1); |
|
if (err) |
|
return err; |
|
|
|
err = imx274_write_table(priv, priv->mode->init_regs); |
|
|
|
return err; |
|
} |
|
|
|
/* |
|
* imx274_start_stream - Function for starting stream per mode index |
|
* @priv: Pointer to device structure |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static int imx274_start_stream(struct stimx274 *priv) |
|
{ |
|
int err = 0; |
|
|
|
err = __v4l2_ctrl_handler_setup(&priv->ctrls.handler); |
|
if (err) { |
|
dev_err(&priv->client->dev, "Error %d setup controls\n", err); |
|
return err; |
|
} |
|
|
|
/* |
|
* Refer to "Standby Cancel Sequence when using CSI-2" in |
|
* imx274 datasheet, it should wait 10ms or more here. |
|
* give it 1 extra ms for margin |
|
*/ |
|
msleep_range(11); |
|
err = imx274_write_table(priv, imx274_start_2); |
|
if (err) |
|
return err; |
|
|
|
/* |
|
* Refer to "Standby Cancel Sequence when using CSI-2" in |
|
* imx274 datasheet, it should wait 7ms or more here. |
|
* give it 1 extra ms for margin |
|
*/ |
|
msleep_range(8); |
|
err = imx274_write_table(priv, imx274_start_3); |
|
if (err) |
|
return err; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* imx274_reset - Function called to reset the sensor |
|
* @priv: Pointer to device structure |
|
* @rst: Input value for determining the sensor's end state after reset |
|
* |
|
* Set the senor in reset and then |
|
* if rst = 0, keep it in reset; |
|
* if rst = 1, bring it out of reset. |
|
* |
|
*/ |
|
static void imx274_reset(struct stimx274 *priv, int rst) |
|
{ |
|
gpiod_set_value_cansleep(priv->reset_gpio, 0); |
|
usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2); |
|
gpiod_set_value_cansleep(priv->reset_gpio, !!rst); |
|
usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2); |
|
} |
|
|
|
static int imx274_power_on(struct device *dev) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
int ret; |
|
|
|
/* keep sensor in reset before power on */ |
|
imx274_reset(imx274, 0); |
|
|
|
ret = clk_prepare_enable(imx274->inck); |
|
if (ret) { |
|
dev_err(&imx274->client->dev, |
|
"Failed to enable input clock: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = regulator_bulk_enable(IMX274_NUM_SUPPLIES, imx274->supplies); |
|
if (ret) { |
|
dev_err(&imx274->client->dev, |
|
"Failed to enable regulators: %d\n", ret); |
|
goto fail_reg; |
|
} |
|
|
|
udelay(2); |
|
imx274_reset(imx274, 1); |
|
|
|
return 0; |
|
|
|
fail_reg: |
|
clk_disable_unprepare(imx274->inck); |
|
return ret; |
|
} |
|
|
|
static int imx274_power_off(struct device *dev) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
|
|
imx274_reset(imx274, 0); |
|
|
|
regulator_bulk_disable(IMX274_NUM_SUPPLIES, imx274->supplies); |
|
|
|
clk_disable_unprepare(imx274->inck); |
|
|
|
return 0; |
|
} |
|
|
|
static int imx274_regulators_get(struct device *dev, struct stimx274 *imx274) |
|
{ |
|
unsigned int i; |
|
|
|
for (i = 0; i < IMX274_NUM_SUPPLIES; i++) |
|
imx274->supplies[i].supply = imx274_supply_names[i]; |
|
|
|
return devm_regulator_bulk_get(dev, IMX274_NUM_SUPPLIES, |
|
imx274->supplies); |
|
} |
|
|
|
/** |
|
* imx274_s_ctrl - This is used to set the imx274 V4L2 controls |
|
* @ctrl: V4L2 control to be set |
|
* |
|
* This function is used to set the V4L2 controls for the imx274 sensor. |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static int imx274_s_ctrl(struct v4l2_ctrl *ctrl) |
|
{ |
|
struct v4l2_subdev *sd = ctrl_to_sd(ctrl); |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
int ret = -EINVAL; |
|
|
|
if (!pm_runtime_get_if_in_use(&imx274->client->dev)) |
|
return 0; |
|
|
|
dev_dbg(&imx274->client->dev, |
|
"%s : s_ctrl: %s, value: %d\n", __func__, |
|
ctrl->name, ctrl->val); |
|
|
|
switch (ctrl->id) { |
|
case V4L2_CID_EXPOSURE: |
|
dev_dbg(&imx274->client->dev, |
|
"%s : set V4L2_CID_EXPOSURE\n", __func__); |
|
ret = imx274_set_exposure(imx274, ctrl->val); |
|
break; |
|
|
|
case V4L2_CID_GAIN: |
|
dev_dbg(&imx274->client->dev, |
|
"%s : set V4L2_CID_GAIN\n", __func__); |
|
ret = imx274_set_gain(imx274, ctrl); |
|
break; |
|
|
|
case V4L2_CID_VFLIP: |
|
dev_dbg(&imx274->client->dev, |
|
"%s : set V4L2_CID_VFLIP\n", __func__); |
|
ret = imx274_set_vflip(imx274, ctrl->val); |
|
break; |
|
|
|
case V4L2_CID_TEST_PATTERN: |
|
dev_dbg(&imx274->client->dev, |
|
"%s : set V4L2_CID_TEST_PATTERN\n", __func__); |
|
ret = imx274_set_test_pattern(imx274, ctrl->val); |
|
break; |
|
} |
|
|
|
pm_runtime_put(&imx274->client->dev); |
|
|
|
return ret; |
|
} |
|
|
|
static int imx274_binning_goodness(struct stimx274 *imx274, |
|
int w, int ask_w, |
|
int h, int ask_h, u32 flags) |
|
{ |
|
struct device *dev = &imx274->client->dev; |
|
const int goodness = 100000; |
|
int val = 0; |
|
|
|
if (flags & V4L2_SEL_FLAG_GE) { |
|
if (w < ask_w) |
|
val -= goodness; |
|
if (h < ask_h) |
|
val -= goodness; |
|
} |
|
|
|
if (flags & V4L2_SEL_FLAG_LE) { |
|
if (w > ask_w) |
|
val -= goodness; |
|
if (h > ask_h) |
|
val -= goodness; |
|
} |
|
|
|
val -= abs(w - ask_w); |
|
val -= abs(h - ask_h); |
|
|
|
dev_dbg(dev, "%s: ask %dx%d, size %dx%d, goodness %d\n", |
|
__func__, ask_w, ask_h, w, h, val); |
|
|
|
return val; |
|
} |
|
|
|
/** |
|
* __imx274_change_compose - Helper function to change binning and set both |
|
* compose and format. |
|
* |
|
* We have two entry points to change binning: set_fmt and |
|
* set_selection(COMPOSE). Both have to compute the new output size |
|
* and set it in both the compose rect and the frame format size. We |
|
* also need to do the same things after setting cropping to restore |
|
* 1:1 binning. |
|
* |
|
* This function contains the common code for these three cases, it |
|
* has many arguments in order to accommodate the needs of all of |
|
* them. |
|
* |
|
* Must be called with imx274->lock locked. |
|
* |
|
* @imx274: The device object |
|
* @sd_state: The subdev state we are editing for TRY requests |
|
* @which: V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY from the caller |
|
* @width: Input-output parameter: set to the desired width before |
|
* the call, contains the chosen value after returning successfully |
|
* @height: Input-output parameter for height (see @width) |
|
* @flags: Selection flags from struct v4l2_subdev_selection, or 0 if not |
|
* available (when called from set_fmt) |
|
*/ |
|
static int __imx274_change_compose(struct stimx274 *imx274, |
|
struct v4l2_subdev_state *sd_state, |
|
u32 which, |
|
u32 *width, |
|
u32 *height, |
|
u32 flags) |
|
{ |
|
struct device *dev = &imx274->client->dev; |
|
const struct v4l2_rect *cur_crop; |
|
struct v4l2_mbus_framefmt *tgt_fmt; |
|
unsigned int i; |
|
const struct imx274_mode *best_mode = &imx274_modes[0]; |
|
int best_goodness = INT_MIN; |
|
|
|
if (which == V4L2_SUBDEV_FORMAT_TRY) { |
|
cur_crop = &sd_state->pads->try_crop; |
|
tgt_fmt = &sd_state->pads->try_fmt; |
|
} else { |
|
cur_crop = &imx274->crop; |
|
tgt_fmt = &imx274->format; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(imx274_modes); i++) { |
|
u8 wratio = imx274_modes[i].wbin_ratio; |
|
u8 hratio = imx274_modes[i].hbin_ratio; |
|
|
|
int goodness = imx274_binning_goodness( |
|
imx274, |
|
cur_crop->width / wratio, *width, |
|
cur_crop->height / hratio, *height, |
|
flags); |
|
|
|
if (goodness >= best_goodness) { |
|
best_goodness = goodness; |
|
best_mode = &imx274_modes[i]; |
|
} |
|
} |
|
|
|
*width = cur_crop->width / best_mode->wbin_ratio; |
|
*height = cur_crop->height / best_mode->hbin_ratio; |
|
|
|
if (which == V4L2_SUBDEV_FORMAT_ACTIVE) |
|
imx274->mode = best_mode; |
|
|
|
dev_dbg(dev, "%s: selected %ux%u binning\n", |
|
__func__, best_mode->wbin_ratio, best_mode->hbin_ratio); |
|
|
|
tgt_fmt->width = *width; |
|
tgt_fmt->height = *height; |
|
tgt_fmt->field = V4L2_FIELD_NONE; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* imx274_get_fmt - Get the pad format |
|
* @sd: Pointer to V4L2 Sub device structure |
|
* @sd_state: Pointer to sub device state structure |
|
* @fmt: Pointer to pad level media bus format |
|
* |
|
* This function is used to get the pad format information. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_get_fmt(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_state *sd_state, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
|
|
mutex_lock(&imx274->lock); |
|
fmt->format = imx274->format; |
|
mutex_unlock(&imx274->lock); |
|
return 0; |
|
} |
|
|
|
/** |
|
* imx274_set_fmt - This is used to set the pad format |
|
* @sd: Pointer to V4L2 Sub device structure |
|
* @sd_state: Pointer to sub device state information structure |
|
* @format: Pointer to pad level media bus format |
|
* |
|
* This function is used to set the pad format. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_fmt(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_state *sd_state, |
|
struct v4l2_subdev_format *format) |
|
{ |
|
struct v4l2_mbus_framefmt *fmt = &format->format; |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
int err = 0; |
|
|
|
mutex_lock(&imx274->lock); |
|
|
|
err = __imx274_change_compose(imx274, sd_state, format->which, |
|
&fmt->width, &fmt->height, 0); |
|
|
|
if (err) |
|
goto out; |
|
|
|
/* |
|
* __imx274_change_compose already set width and height in the |
|
* applicable format, but we need to keep all other format |
|
* values, so do a full copy here |
|
*/ |
|
fmt->field = V4L2_FIELD_NONE; |
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY) |
|
sd_state->pads->try_fmt = *fmt; |
|
else |
|
imx274->format = *fmt; |
|
|
|
out: |
|
mutex_unlock(&imx274->lock); |
|
|
|
return err; |
|
} |
|
|
|
static int imx274_get_selection(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_state *sd_state, |
|
struct v4l2_subdev_selection *sel) |
|
{ |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
const struct v4l2_rect *src_crop; |
|
const struct v4l2_mbus_framefmt *src_fmt; |
|
int ret = 0; |
|
|
|
if (sel->pad != 0) |
|
return -EINVAL; |
|
|
|
if (sel->target == V4L2_SEL_TGT_CROP_BOUNDS) { |
|
sel->r.left = 0; |
|
sel->r.top = 0; |
|
sel->r.width = IMX274_MAX_WIDTH; |
|
sel->r.height = IMX274_MAX_HEIGHT; |
|
return 0; |
|
} |
|
|
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { |
|
src_crop = &sd_state->pads->try_crop; |
|
src_fmt = &sd_state->pads->try_fmt; |
|
} else { |
|
src_crop = &imx274->crop; |
|
src_fmt = &imx274->format; |
|
} |
|
|
|
mutex_lock(&imx274->lock); |
|
|
|
switch (sel->target) { |
|
case V4L2_SEL_TGT_CROP: |
|
sel->r = *src_crop; |
|
break; |
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
|
sel->r.top = 0; |
|
sel->r.left = 0; |
|
sel->r.width = src_crop->width; |
|
sel->r.height = src_crop->height; |
|
break; |
|
case V4L2_SEL_TGT_COMPOSE: |
|
sel->r.top = 0; |
|
sel->r.left = 0; |
|
sel->r.width = src_fmt->width; |
|
sel->r.height = src_fmt->height; |
|
break; |
|
default: |
|
ret = -EINVAL; |
|
} |
|
|
|
mutex_unlock(&imx274->lock); |
|
|
|
return ret; |
|
} |
|
|
|
static int imx274_set_selection_crop(struct stimx274 *imx274, |
|
struct v4l2_subdev_state *sd_state, |
|
struct v4l2_subdev_selection *sel) |
|
{ |
|
struct v4l2_rect *tgt_crop; |
|
struct v4l2_rect new_crop; |
|
bool size_changed; |
|
|
|
/* |
|
* h_step could be 12 or 24 depending on the binning. But we |
|
* won't know the binning until we choose the mode later in |
|
* __imx274_change_compose(). Thus let's be safe and use the |
|
* most conservative value in all cases. |
|
*/ |
|
const u32 h_step = 24; |
|
|
|
new_crop.width = min_t(u32, |
|
IMX274_ROUND(sel->r.width, h_step, sel->flags), |
|
IMX274_MAX_WIDTH); |
|
|
|
/* Constraint: HTRIMMING_END - HTRIMMING_START >= 144 */ |
|
if (new_crop.width < 144) |
|
new_crop.width = 144; |
|
|
|
new_crop.left = min_t(u32, |
|
IMX274_ROUND(sel->r.left, h_step, 0), |
|
IMX274_MAX_WIDTH - new_crop.width); |
|
|
|
new_crop.height = min_t(u32, |
|
IMX274_ROUND(sel->r.height, 2, sel->flags), |
|
IMX274_MAX_HEIGHT); |
|
|
|
new_crop.top = min_t(u32, IMX274_ROUND(sel->r.top, 2, 0), |
|
IMX274_MAX_HEIGHT - new_crop.height); |
|
|
|
sel->r = new_crop; |
|
|
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY) |
|
tgt_crop = &sd_state->pads->try_crop; |
|
else |
|
tgt_crop = &imx274->crop; |
|
|
|
mutex_lock(&imx274->lock); |
|
|
|
size_changed = (new_crop.width != tgt_crop->width || |
|
new_crop.height != tgt_crop->height); |
|
|
|
/* __imx274_change_compose needs the new size in *tgt_crop */ |
|
*tgt_crop = new_crop; |
|
|
|
/* if crop size changed then reset the output image size */ |
|
if (size_changed) |
|
__imx274_change_compose(imx274, sd_state, sel->which, |
|
&new_crop.width, &new_crop.height, |
|
sel->flags); |
|
|
|
mutex_unlock(&imx274->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static int imx274_set_selection(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_state *sd_state, |
|
struct v4l2_subdev_selection *sel) |
|
{ |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
|
|
if (sel->pad != 0) |
|
return -EINVAL; |
|
|
|
if (sel->target == V4L2_SEL_TGT_CROP) |
|
return imx274_set_selection_crop(imx274, sd_state, sel); |
|
|
|
if (sel->target == V4L2_SEL_TGT_COMPOSE) { |
|
int err; |
|
|
|
mutex_lock(&imx274->lock); |
|
err = __imx274_change_compose(imx274, sd_state, sel->which, |
|
&sel->r.width, &sel->r.height, |
|
sel->flags); |
|
mutex_unlock(&imx274->lock); |
|
|
|
/* |
|
* __imx274_change_compose already set width and |
|
* height in set->r, we still need to set top-left |
|
*/ |
|
if (!err) { |
|
sel->r.top = 0; |
|
sel->r.left = 0; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
static int imx274_apply_trimming(struct stimx274 *imx274) |
|
{ |
|
u32 h_start; |
|
u32 h_end; |
|
u32 hmax; |
|
u32 v_cut; |
|
s32 v_pos; |
|
u32 write_v_size; |
|
u32 y_out_size; |
|
int err; |
|
|
|
h_start = imx274->crop.left + 12; |
|
h_end = h_start + imx274->crop.width; |
|
|
|
/* Use the minimum allowed value of HMAX */ |
|
/* Note: except in mode 1, (width / 16 + 23) is always < hmax_min */ |
|
/* Note: 260 is the minimum HMAX in all implemented modes */ |
|
hmax = max_t(u32, 260, (imx274->crop.width) / 16 + 23); |
|
|
|
/* invert v_pos if VFLIP */ |
|
v_pos = imx274->ctrls.vflip->cur.val ? |
|
(-imx274->crop.top / 2) : (imx274->crop.top / 2); |
|
v_cut = (IMX274_MAX_HEIGHT - imx274->crop.height) / 2; |
|
write_v_size = imx274->crop.height + 22; |
|
y_out_size = imx274->crop.height; |
|
|
|
err = imx274_write_mbreg(imx274, IMX274_HMAX_REG_LSB, hmax, 2); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_HTRIM_EN_REG, 1, 1); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_HTRIM_START_REG_LSB, |
|
h_start, 2); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_HTRIM_END_REG_LSB, |
|
h_end, 2); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_VWIDCUTEN_REG, 1, 1); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_VWIDCUT_REG_LSB, |
|
v_cut, 2); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_VWINPOS_REG_LSB, |
|
v_pos, 2); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_WRITE_VSIZE_REG_LSB, |
|
write_v_size, 2); |
|
if (!err) |
|
err = imx274_write_mbreg(imx274, IMX274_Y_OUT_SIZE_REG_LSB, |
|
y_out_size, 2); |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* imx274_g_frame_interval - Get the frame interval |
|
* @sd: Pointer to V4L2 Sub device structure |
|
* @fi: Pointer to V4l2 Sub device frame interval structure |
|
* |
|
* This function is used to get the frame interval. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_g_frame_interval(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_frame_interval *fi) |
|
{ |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
|
|
fi->interval = imx274->frame_interval; |
|
dev_dbg(&imx274->client->dev, "%s frame rate = %d / %d\n", |
|
__func__, imx274->frame_interval.numerator, |
|
imx274->frame_interval.denominator); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* imx274_s_frame_interval - Set the frame interval |
|
* @sd: Pointer to V4L2 Sub device structure |
|
* @fi: Pointer to V4l2 Sub device frame interval structure |
|
* |
|
* This function is used to set the frame intervavl. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_s_frame_interval(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_frame_interval *fi) |
|
{ |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
struct v4l2_ctrl *ctrl = imx274->ctrls.exposure; |
|
int min, max, def; |
|
int ret; |
|
|
|
mutex_lock(&imx274->lock); |
|
ret = imx274_set_frame_interval(imx274, fi->interval); |
|
|
|
if (!ret) { |
|
fi->interval = imx274->frame_interval; |
|
|
|
/* |
|
* exposure time range is decided by frame interval |
|
* need to update it after frame interval changes |
|
*/ |
|
min = IMX274_MIN_EXPOSURE_TIME; |
|
max = fi->interval.numerator * 1000000 |
|
/ fi->interval.denominator; |
|
def = max; |
|
ret = __v4l2_ctrl_modify_range(ctrl, min, max, 1, def); |
|
if (ret) { |
|
dev_err(&imx274->client->dev, |
|
"Exposure ctrl range update failed\n"); |
|
goto unlock; |
|
} |
|
|
|
/* update exposure time accordingly */ |
|
imx274_set_exposure(imx274, ctrl->val); |
|
|
|
dev_dbg(&imx274->client->dev, "set frame interval to %uus\n", |
|
fi->interval.numerator * 1000000 |
|
/ fi->interval.denominator); |
|
} |
|
|
|
unlock: |
|
mutex_unlock(&imx274->lock); |
|
|
|
return ret; |
|
} |
|
|
|
/** |
|
* imx274_load_default - load default control values |
|
* @priv: Pointer to device structure |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static void imx274_load_default(struct stimx274 *priv) |
|
{ |
|
/* load default control values */ |
|
priv->frame_interval.numerator = 1; |
|
priv->frame_interval.denominator = IMX274_DEF_FRAME_RATE; |
|
priv->ctrls.exposure->val = 1000000 / IMX274_DEF_FRAME_RATE; |
|
priv->ctrls.gain->val = IMX274_DEF_GAIN; |
|
priv->ctrls.vflip->val = 0; |
|
priv->ctrls.test_pattern->val = TEST_PATTERN_DISABLED; |
|
} |
|
|
|
/** |
|
* imx274_s_stream - It is used to start/stop the streaming. |
|
* @sd: V4L2 Sub device |
|
* @on: Flag (True / False) |
|
* |
|
* This function controls the start or stop of streaming for the |
|
* imx274 sensor. |
|
* |
|
* Return: 0 on success, errors otherwise |
|
*/ |
|
static int imx274_s_stream(struct v4l2_subdev *sd, int on) |
|
{ |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
int ret = 0; |
|
|
|
dev_dbg(&imx274->client->dev, "%s : %s, mode index = %td\n", __func__, |
|
on ? "Stream Start" : "Stream Stop", |
|
imx274->mode - &imx274_modes[0]); |
|
|
|
mutex_lock(&imx274->lock); |
|
|
|
if (on) { |
|
ret = pm_runtime_resume_and_get(&imx274->client->dev); |
|
if (ret < 0) { |
|
mutex_unlock(&imx274->lock); |
|
return ret; |
|
} |
|
|
|
/* load mode registers */ |
|
ret = imx274_mode_regs(imx274); |
|
if (ret) |
|
goto fail; |
|
|
|
ret = imx274_apply_trimming(imx274); |
|
if (ret) |
|
goto fail; |
|
|
|
/* |
|
* update frame rate & expsoure. if the last mode is different, |
|
* HMAX could be changed. As the result, frame rate & exposure |
|
* are changed. |
|
* gain is not affected. |
|
*/ |
|
ret = imx274_set_frame_interval(imx274, |
|
imx274->frame_interval); |
|
if (ret) |
|
goto fail; |
|
|
|
/* start stream */ |
|
ret = imx274_start_stream(imx274); |
|
if (ret) |
|
goto fail; |
|
} else { |
|
/* stop stream */ |
|
ret = imx274_write_table(imx274, imx274_stop); |
|
if (ret) |
|
goto fail; |
|
|
|
pm_runtime_put(&imx274->client->dev); |
|
} |
|
|
|
mutex_unlock(&imx274->lock); |
|
dev_dbg(&imx274->client->dev, "%s : Done\n", __func__); |
|
return 0; |
|
|
|
fail: |
|
pm_runtime_put(&imx274->client->dev); |
|
mutex_unlock(&imx274->lock); |
|
dev_err(&imx274->client->dev, "s_stream failed\n"); |
|
return ret; |
|
} |
|
|
|
/* |
|
* imx274_get_frame_length - Function for obtaining current frame length |
|
* @priv: Pointer to device structure |
|
* @val: Pointer to obainted value |
|
* |
|
* frame_length = vmax x (svr + 1), in unit of hmax. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_get_frame_length(struct stimx274 *priv, u32 *val) |
|
{ |
|
int err; |
|
u32 svr; |
|
u32 vmax; |
|
|
|
err = imx274_read_mbreg(priv, IMX274_SVR_REG_LSB, &svr, 2); |
|
if (err) |
|
goto fail; |
|
|
|
err = imx274_read_mbreg(priv, IMX274_VMAX_REG_3, &vmax, 3); |
|
if (err) |
|
goto fail; |
|
|
|
*val = vmax * (svr + 1); |
|
|
|
return 0; |
|
|
|
fail: |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
return err; |
|
} |
|
|
|
static int imx274_clamp_coarse_time(struct stimx274 *priv, u32 *val, |
|
u32 *frame_length) |
|
{ |
|
int err; |
|
|
|
err = imx274_get_frame_length(priv, frame_length); |
|
if (err) |
|
return err; |
|
|
|
if (*frame_length < priv->mode->min_frame_len) |
|
*frame_length = priv->mode->min_frame_len; |
|
|
|
*val = *frame_length - *val; /* convert to raw shr */ |
|
if (*val > *frame_length - IMX274_SHR_LIMIT_CONST) |
|
*val = *frame_length - IMX274_SHR_LIMIT_CONST; |
|
else if (*val < priv->mode->min_SHR) |
|
*val = priv->mode->min_SHR; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* imx274_set_digital gain - Function called when setting digital gain |
|
* @priv: Pointer to device structure |
|
* @dgain: Value of digital gain. |
|
* |
|
* Digital gain has only 4 steps: 1x, 2x, 4x, and 8x |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_digital_gain(struct stimx274 *priv, u32 dgain) |
|
{ |
|
u8 reg_val; |
|
|
|
reg_val = ffs(dgain); |
|
|
|
if (reg_val) |
|
reg_val--; |
|
|
|
reg_val = clamp(reg_val, (u8)0, (u8)3); |
|
|
|
return imx274_write_reg(priv, IMX274_DIGITAL_GAIN_REG, |
|
reg_val & IMX274_MASK_LSB_4_BITS); |
|
} |
|
|
|
/* |
|
* imx274_set_gain - Function called when setting gain |
|
* @priv: Pointer to device structure |
|
* @val: Value of gain. the real value = val << IMX274_GAIN_SHIFT; |
|
* @ctrl: v4l2 control pointer |
|
* |
|
* Set the gain based on input value. |
|
* The caller should hold the mutex lock imx274->lock if necessary |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_gain(struct stimx274 *priv, struct v4l2_ctrl *ctrl) |
|
{ |
|
int err; |
|
u32 gain, analog_gain, digital_gain, gain_reg; |
|
|
|
gain = (u32)(ctrl->val); |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : input gain = %d.%d\n", __func__, |
|
gain >> IMX274_GAIN_SHIFT, |
|
((gain & IMX274_GAIN_SHIFT_MASK) * 100) >> IMX274_GAIN_SHIFT); |
|
|
|
if (gain > IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN) |
|
gain = IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN; |
|
else if (gain < IMX274_MIN_GAIN) |
|
gain = IMX274_MIN_GAIN; |
|
|
|
if (gain <= IMX274_MAX_ANALOG_GAIN) |
|
digital_gain = 1; |
|
else if (gain <= IMX274_MAX_ANALOG_GAIN * 2) |
|
digital_gain = 2; |
|
else if (gain <= IMX274_MAX_ANALOG_GAIN * 4) |
|
digital_gain = 4; |
|
else |
|
digital_gain = IMX274_MAX_DIGITAL_GAIN; |
|
|
|
analog_gain = gain / digital_gain; |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : digital gain = %d, analog gain = %d.%d\n", |
|
__func__, digital_gain, analog_gain >> IMX274_GAIN_SHIFT, |
|
((analog_gain & IMX274_GAIN_SHIFT_MASK) * 100) |
|
>> IMX274_GAIN_SHIFT); |
|
|
|
err = imx274_set_digital_gain(priv, digital_gain); |
|
if (err) |
|
goto fail; |
|
|
|
/* convert to register value, refer to imx274 datasheet */ |
|
gain_reg = (u32)IMX274_GAIN_CONST - |
|
(IMX274_GAIN_CONST << IMX274_GAIN_SHIFT) / analog_gain; |
|
if (gain_reg > IMX274_GAIN_REG_MAX) |
|
gain_reg = IMX274_GAIN_REG_MAX; |
|
|
|
err = imx274_write_mbreg(priv, IMX274_ANALOG_GAIN_ADDR_LSB, gain_reg, |
|
2); |
|
if (err) |
|
goto fail; |
|
|
|
if (IMX274_GAIN_CONST - gain_reg == 0) { |
|
err = -EINVAL; |
|
goto fail; |
|
} |
|
|
|
/* convert register value back to gain value */ |
|
ctrl->val = (IMX274_GAIN_CONST << IMX274_GAIN_SHIFT) |
|
/ (IMX274_GAIN_CONST - gain_reg) * digital_gain; |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : GAIN control success, gain_reg = %d, new gain = %d\n", |
|
__func__, gain_reg, ctrl->val); |
|
|
|
return 0; |
|
|
|
fail: |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
return err; |
|
} |
|
|
|
/* |
|
* imx274_set_coarse_time - Function called when setting SHR value |
|
* @priv: Pointer to device structure |
|
* @val: Value for exposure time in number of line_length, or [HMAX] |
|
* |
|
* Set SHR value based on input value. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_coarse_time(struct stimx274 *priv, u32 *val) |
|
{ |
|
int err; |
|
u32 coarse_time, frame_length; |
|
|
|
coarse_time = *val; |
|
|
|
/* convert exposure_time to appropriate SHR value */ |
|
err = imx274_clamp_coarse_time(priv, &coarse_time, &frame_length); |
|
if (err) |
|
goto fail; |
|
|
|
err = imx274_write_mbreg(priv, IMX274_SHR_REG_LSB, coarse_time, 2); |
|
if (err) |
|
goto fail; |
|
|
|
*val = frame_length - coarse_time; |
|
return 0; |
|
|
|
fail: |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
return err; |
|
} |
|
|
|
/* |
|
* imx274_set_exposure - Function called when setting exposure time |
|
* @priv: Pointer to device structure |
|
* @val: Variable for exposure time, in the unit of micro-second |
|
* |
|
* Set exposure time based on input value. |
|
* The caller should hold the mutex lock imx274->lock if necessary |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_exposure(struct stimx274 *priv, int val) |
|
{ |
|
int err; |
|
u32 hmax; |
|
u32 coarse_time; /* exposure time in unit of line (HMAX)*/ |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : EXPOSURE control input = %d\n", __func__, val); |
|
|
|
/* step 1: convert input exposure_time (val) into number of 1[HMAX] */ |
|
|
|
err = imx274_read_mbreg(priv, IMX274_HMAX_REG_LSB, &hmax, 2); |
|
if (err) |
|
goto fail; |
|
|
|
if (hmax == 0) { |
|
err = -EINVAL; |
|
goto fail; |
|
} |
|
|
|
coarse_time = (IMX274_PIXCLK_CONST1 / IMX274_PIXCLK_CONST2 * val |
|
- priv->mode->nocpiop) / hmax; |
|
|
|
/* step 2: convert exposure_time into SHR value */ |
|
|
|
/* set SHR */ |
|
err = imx274_set_coarse_time(priv, &coarse_time); |
|
if (err) |
|
goto fail; |
|
|
|
priv->ctrls.exposure->val = |
|
(coarse_time * hmax + priv->mode->nocpiop) |
|
/ (IMX274_PIXCLK_CONST1 / IMX274_PIXCLK_CONST2); |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : EXPOSURE control success\n", __func__); |
|
return 0; |
|
|
|
fail: |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
|
|
return err; |
|
} |
|
|
|
/* |
|
* imx274_set_vflip - Function called when setting vertical flip |
|
* @priv: Pointer to device structure |
|
* @val: Value for vflip setting |
|
* |
|
* Set vertical flip based on input value. |
|
* val = 0: normal, no vertical flip |
|
* val = 1: vertical flip enabled |
|
* The caller should hold the mutex lock imx274->lock if necessary |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_vflip(struct stimx274 *priv, int val) |
|
{ |
|
int err; |
|
|
|
err = imx274_write_reg(priv, IMX274_VFLIP_REG, val); |
|
if (err) { |
|
dev_err(&priv->client->dev, "VFLIP control error\n"); |
|
return err; |
|
} |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : VFLIP control success\n", __func__); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* imx274_set_test_pattern - Function called when setting test pattern |
|
* @priv: Pointer to device structure |
|
* @val: Variable for test pattern |
|
* |
|
* Set to different test patterns based on input value. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_test_pattern(struct stimx274 *priv, int val) |
|
{ |
|
int err = 0; |
|
|
|
if (val == TEST_PATTERN_DISABLED) { |
|
err = imx274_write_table(priv, imx274_tp_disabled); |
|
} else if (val <= TEST_PATTERN_V_COLOR_BARS) { |
|
err = imx274_write_reg(priv, IMX274_TEST_PATTERN_REG, val - 1); |
|
if (!err) |
|
err = imx274_write_table(priv, imx274_tp_regs); |
|
} else { |
|
err = -EINVAL; |
|
} |
|
|
|
if (!err) |
|
dev_dbg(&priv->client->dev, |
|
"%s : TEST PATTERN control success\n", __func__); |
|
else |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
|
|
return err; |
|
} |
|
|
|
/* |
|
* imx274_set_frame_length - Function called when setting frame length |
|
* @priv: Pointer to device structure |
|
* @val: Variable for frame length (= VMAX, i.e. vertical drive period length) |
|
* |
|
* Set frame length based on input value. |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_frame_length(struct stimx274 *priv, u32 val) |
|
{ |
|
int err; |
|
u32 frame_length; |
|
|
|
dev_dbg(&priv->client->dev, "%s : input length = %d\n", |
|
__func__, val); |
|
|
|
frame_length = (u32)val; |
|
|
|
err = imx274_write_mbreg(priv, IMX274_VMAX_REG_3, frame_length, 3); |
|
if (err) |
|
goto fail; |
|
|
|
return 0; |
|
|
|
fail: |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
return err; |
|
} |
|
|
|
/* |
|
* imx274_set_frame_interval - Function called when setting frame interval |
|
* @priv: Pointer to device structure |
|
* @frame_interval: Variable for frame interval |
|
* |
|
* Change frame interval by updating VMAX value |
|
* The caller should hold the mutex lock imx274->lock if necessary |
|
* |
|
* Return: 0 on success |
|
*/ |
|
static int imx274_set_frame_interval(struct stimx274 *priv, |
|
struct v4l2_fract frame_interval) |
|
{ |
|
int err; |
|
u32 frame_length, req_frame_rate; |
|
u32 svr; |
|
u32 hmax; |
|
|
|
dev_dbg(&priv->client->dev, "%s: input frame interval = %d / %d", |
|
__func__, frame_interval.numerator, |
|
frame_interval.denominator); |
|
|
|
if (frame_interval.numerator == 0 || frame_interval.denominator == 0) { |
|
frame_interval.denominator = IMX274_DEF_FRAME_RATE; |
|
frame_interval.numerator = 1; |
|
} |
|
|
|
req_frame_rate = (u32)(frame_interval.denominator |
|
/ frame_interval.numerator); |
|
|
|
/* boundary check */ |
|
if (req_frame_rate > priv->mode->max_fps) { |
|
frame_interval.numerator = 1; |
|
frame_interval.denominator = priv->mode->max_fps; |
|
} else if (req_frame_rate < IMX274_MIN_FRAME_RATE) { |
|
frame_interval.numerator = 1; |
|
frame_interval.denominator = IMX274_MIN_FRAME_RATE; |
|
} |
|
|
|
/* |
|
* VMAX = 1/frame_rate x 72M / (SVR+1) / HMAX |
|
* frame_length (i.e. VMAX) = (frame_interval) x 72M /(SVR+1) / HMAX |
|
*/ |
|
|
|
err = imx274_read_mbreg(priv, IMX274_SVR_REG_LSB, &svr, 2); |
|
if (err) |
|
goto fail; |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : register SVR = %d\n", __func__, svr); |
|
|
|
err = imx274_read_mbreg(priv, IMX274_HMAX_REG_LSB, &hmax, 2); |
|
if (err) |
|
goto fail; |
|
|
|
dev_dbg(&priv->client->dev, |
|
"%s : register HMAX = %d\n", __func__, hmax); |
|
|
|
if (hmax == 0 || frame_interval.denominator == 0) { |
|
err = -EINVAL; |
|
goto fail; |
|
} |
|
|
|
frame_length = IMX274_PIXCLK_CONST1 / (svr + 1) / hmax |
|
* frame_interval.numerator |
|
/ frame_interval.denominator; |
|
|
|
err = imx274_set_frame_length(priv, frame_length); |
|
if (err) |
|
goto fail; |
|
|
|
priv->frame_interval = frame_interval; |
|
return 0; |
|
|
|
fail: |
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err); |
|
return err; |
|
} |
|
|
|
static const struct v4l2_subdev_pad_ops imx274_pad_ops = { |
|
.get_fmt = imx274_get_fmt, |
|
.set_fmt = imx274_set_fmt, |
|
.get_selection = imx274_get_selection, |
|
.set_selection = imx274_set_selection, |
|
}; |
|
|
|
static const struct v4l2_subdev_video_ops imx274_video_ops = { |
|
.g_frame_interval = imx274_g_frame_interval, |
|
.s_frame_interval = imx274_s_frame_interval, |
|
.s_stream = imx274_s_stream, |
|
}; |
|
|
|
static const struct v4l2_subdev_ops imx274_subdev_ops = { |
|
.pad = &imx274_pad_ops, |
|
.video = &imx274_video_ops, |
|
}; |
|
|
|
static const struct v4l2_ctrl_ops imx274_ctrl_ops = { |
|
.s_ctrl = imx274_s_ctrl, |
|
}; |
|
|
|
static const struct of_device_id imx274_of_id_table[] = { |
|
{ .compatible = "sony,imx274" }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, imx274_of_id_table); |
|
|
|
static const struct i2c_device_id imx274_id[] = { |
|
{ "IMX274", 0 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, imx274_id); |
|
|
|
static int imx274_probe(struct i2c_client *client) |
|
{ |
|
struct v4l2_subdev *sd; |
|
struct stimx274 *imx274; |
|
int ret; |
|
|
|
/* initialize imx274 */ |
|
imx274 = devm_kzalloc(&client->dev, sizeof(*imx274), GFP_KERNEL); |
|
if (!imx274) |
|
return -ENOMEM; |
|
|
|
mutex_init(&imx274->lock); |
|
|
|
imx274->inck = devm_clk_get_optional(&client->dev, "inck"); |
|
if (IS_ERR(imx274->inck)) |
|
return PTR_ERR(imx274->inck); |
|
|
|
ret = imx274_regulators_get(&client->dev, imx274); |
|
if (ret) { |
|
dev_err(&client->dev, |
|
"Failed to get power regulators, err: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
/* initialize format */ |
|
imx274->mode = &imx274_modes[0]; |
|
imx274->crop.width = IMX274_MAX_WIDTH; |
|
imx274->crop.height = IMX274_MAX_HEIGHT; |
|
imx274->format.width = imx274->crop.width / imx274->mode->wbin_ratio; |
|
imx274->format.height = imx274->crop.height / imx274->mode->hbin_ratio; |
|
imx274->format.field = V4L2_FIELD_NONE; |
|
imx274->format.code = MEDIA_BUS_FMT_SRGGB10_1X10; |
|
imx274->format.colorspace = V4L2_COLORSPACE_SRGB; |
|
imx274->frame_interval.numerator = 1; |
|
imx274->frame_interval.denominator = IMX274_DEF_FRAME_RATE; |
|
|
|
/* initialize regmap */ |
|
imx274->regmap = devm_regmap_init_i2c(client, &imx274_regmap_config); |
|
if (IS_ERR(imx274->regmap)) { |
|
dev_err(&client->dev, |
|
"regmap init failed: %ld\n", PTR_ERR(imx274->regmap)); |
|
ret = -ENODEV; |
|
goto err_regmap; |
|
} |
|
|
|
/* initialize subdevice */ |
|
imx274->client = client; |
|
sd = &imx274->sd; |
|
v4l2_i2c_subdev_init(sd, client, &imx274_subdev_ops); |
|
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; |
|
|
|
/* initialize subdev media pad */ |
|
imx274->pad.flags = MEDIA_PAD_FL_SOURCE; |
|
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; |
|
ret = media_entity_pads_init(&sd->entity, 1, &imx274->pad); |
|
if (ret < 0) { |
|
dev_err(&client->dev, |
|
"%s : media entity init Failed %d\n", __func__, ret); |
|
goto err_regmap; |
|
} |
|
|
|
/* initialize sensor reset gpio */ |
|
imx274->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", |
|
GPIOD_OUT_HIGH); |
|
if (IS_ERR(imx274->reset_gpio)) { |
|
if (PTR_ERR(imx274->reset_gpio) != -EPROBE_DEFER) |
|
dev_err(&client->dev, "Reset GPIO not setup in DT"); |
|
ret = PTR_ERR(imx274->reset_gpio); |
|
goto err_me; |
|
} |
|
|
|
/* power on the sensor */ |
|
ret = imx274_power_on(&client->dev); |
|
if (ret < 0) { |
|
dev_err(&client->dev, |
|
"%s : imx274 power on failed\n", __func__); |
|
goto err_me; |
|
} |
|
|
|
/* initialize controls */ |
|
ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 4); |
|
if (ret < 0) { |
|
dev_err(&client->dev, |
|
"%s : ctrl handler init Failed\n", __func__); |
|
goto err_power_off; |
|
} |
|
|
|
imx274->ctrls.handler.lock = &imx274->lock; |
|
|
|
/* add new controls */ |
|
imx274->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items( |
|
&imx274->ctrls.handler, &imx274_ctrl_ops, |
|
V4L2_CID_TEST_PATTERN, |
|
ARRAY_SIZE(tp_qmenu) - 1, 0, 0, tp_qmenu); |
|
|
|
imx274->ctrls.gain = v4l2_ctrl_new_std( |
|
&imx274->ctrls.handler, |
|
&imx274_ctrl_ops, |
|
V4L2_CID_GAIN, IMX274_MIN_GAIN, |
|
IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN, 1, |
|
IMX274_DEF_GAIN); |
|
|
|
imx274->ctrls.exposure = v4l2_ctrl_new_std( |
|
&imx274->ctrls.handler, |
|
&imx274_ctrl_ops, |
|
V4L2_CID_EXPOSURE, IMX274_MIN_EXPOSURE_TIME, |
|
1000000 / IMX274_DEF_FRAME_RATE, 1, |
|
IMX274_MIN_EXPOSURE_TIME); |
|
|
|
imx274->ctrls.vflip = v4l2_ctrl_new_std( |
|
&imx274->ctrls.handler, |
|
&imx274_ctrl_ops, |
|
V4L2_CID_VFLIP, 0, 1, 1, 0); |
|
|
|
imx274->sd.ctrl_handler = &imx274->ctrls.handler; |
|
if (imx274->ctrls.handler.error) { |
|
ret = imx274->ctrls.handler.error; |
|
goto err_ctrls; |
|
} |
|
|
|
/* load default control values */ |
|
imx274_load_default(imx274); |
|
|
|
/* register subdevice */ |
|
ret = v4l2_async_register_subdev(sd); |
|
if (ret < 0) { |
|
dev_err(&client->dev, |
|
"%s : v4l2_async_register_subdev failed %d\n", |
|
__func__, ret); |
|
goto err_ctrls; |
|
} |
|
|
|
pm_runtime_set_active(&client->dev); |
|
pm_runtime_enable(&client->dev); |
|
pm_runtime_idle(&client->dev); |
|
|
|
dev_info(&client->dev, "imx274 : imx274 probe success !\n"); |
|
return 0; |
|
|
|
err_ctrls: |
|
v4l2_ctrl_handler_free(&imx274->ctrls.handler); |
|
err_power_off: |
|
imx274_power_off(&client->dev); |
|
err_me: |
|
media_entity_cleanup(&sd->entity); |
|
err_regmap: |
|
mutex_destroy(&imx274->lock); |
|
return ret; |
|
} |
|
|
|
static int imx274_remove(struct i2c_client *client) |
|
{ |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct stimx274 *imx274 = to_imx274(sd); |
|
|
|
pm_runtime_disable(&client->dev); |
|
if (!pm_runtime_status_suspended(&client->dev)) |
|
imx274_power_off(&client->dev); |
|
pm_runtime_set_suspended(&client->dev); |
|
|
|
v4l2_async_unregister_subdev(sd); |
|
v4l2_ctrl_handler_free(&imx274->ctrls.handler); |
|
|
|
media_entity_cleanup(&sd->entity); |
|
mutex_destroy(&imx274->lock); |
|
return 0; |
|
} |
|
|
|
static const struct dev_pm_ops imx274_pm_ops = { |
|
SET_RUNTIME_PM_OPS(imx274_power_off, imx274_power_on, NULL) |
|
}; |
|
|
|
static struct i2c_driver imx274_i2c_driver = { |
|
.driver = { |
|
.name = DRIVER_NAME, |
|
.pm = &imx274_pm_ops, |
|
.of_match_table = imx274_of_id_table, |
|
}, |
|
.probe_new = imx274_probe, |
|
.remove = imx274_remove, |
|
.id_table = imx274_id, |
|
}; |
|
|
|
module_i2c_driver(imx274_i2c_driver); |
|
|
|
MODULE_AUTHOR("Leon Luo <[email protected]>"); |
|
MODULE_DESCRIPTION("IMX274 CMOS Image Sensor driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|