// SPDX-License-Identifier: GPL-2.0 /* * imx274.c - IMX274 CMOS Image Sensor driver * * Copyright (C) 2017, Leopard Imaging, Inc. * * Leon Luo <leonl@leopardimaging.com> * Edwin Zou <edwinz@leopardimaging.com> * Luca Ceresoli <luca@lucaceresoli.net> */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/gpio.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of_gpio.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/v4l2-mediabus.h> #include <linux/videodev2.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-subdev.h> /* * See "SHR, SVR Setting" in datasheet */ #define IMX274_DEFAULT_FRAME_LENGTH (4550) #define IMX274_MAX_FRAME_LENGTH (0x000fffff) /* * See "Frame Rate Adjustment" in datasheet */ #define IMX274_PIXCLK_CONST1 (72000000) #define IMX274_PIXCLK_CONST2 (1000000) /* * The input gain is shifted by IMX274_GAIN_SHIFT to get * decimal number. The real gain is * (float)input_gain_value / (1 << IMX274_GAIN_SHIFT) */ #define IMX274_GAIN_SHIFT (8) #define IMX274_GAIN_SHIFT_MASK ((1 << IMX274_GAIN_SHIFT) - 1) /* * See "Analog Gain" and "Digital Gain" in datasheet * min gain is 1X * max gain is calculated based on IMX274_GAIN_REG_MAX */ #define IMX274_GAIN_REG_MAX (1957) #define IMX274_MIN_GAIN (0x01 << IMX274_GAIN_SHIFT) #define IMX274_MAX_ANALOG_GAIN ((2048 << IMX274_GAIN_SHIFT)\ <------><------><------><------><------>/ (2048 - IMX274_GAIN_REG_MAX)) #define IMX274_MAX_DIGITAL_GAIN (8) #define IMX274_DEF_GAIN (20 << IMX274_GAIN_SHIFT) #define IMX274_GAIN_CONST (2048) /* for gain formula */ /* * 1 line time in us = (HMAX / 72), minimal is 4 lines */ #define IMX274_MIN_EXPOSURE_TIME (4 * 260 / 72) #define IMX274_DEFAULT_BINNING IMX274_BINNING_OFF #define IMX274_MAX_WIDTH (3840) #define IMX274_MAX_HEIGHT (2160) #define IMX274_MAX_FRAME_RATE (120) #define IMX274_MIN_FRAME_RATE (5) #define IMX274_DEF_FRAME_RATE (60) /* * register SHR is limited to (SVR value + 1) x VMAX value - 4 */ #define IMX274_SHR_LIMIT_CONST (4) /* * Min and max sensor reset delay (microseconds) */ #define IMX274_RESET_DELAY1 (2000) #define IMX274_RESET_DELAY2 (2200) /* * shift and mask constants */ #define IMX274_SHIFT_8_BITS (8) #define IMX274_SHIFT_16_BITS (16) #define IMX274_MASK_LSB_2_BITS (0x03) #define IMX274_MASK_LSB_3_BITS (0x07) #define IMX274_MASK_LSB_4_BITS (0x0f) #define IMX274_MASK_LSB_8_BITS (0x00ff) #define DRIVER_NAME "IMX274" /* * IMX274 register definitions */ #define IMX274_SHR_REG_MSB 0x300D /* SHR */ #define IMX274_SHR_REG_LSB 0x300C /* SHR */ #define IMX274_SVR_REG_MSB 0x300F /* SVR */ #define IMX274_SVR_REG_LSB 0x300E /* SVR */ #define IMX274_HTRIM_EN_REG 0x3037 #define IMX274_HTRIM_START_REG_LSB 0x3038 #define IMX274_HTRIM_START_REG_MSB 0x3039 #define IMX274_HTRIM_END_REG_LSB 0x303A #define IMX274_HTRIM_END_REG_MSB 0x303B #define IMX274_VWIDCUTEN_REG 0x30DD #define IMX274_VWIDCUT_REG_LSB 0x30DE #define IMX274_VWIDCUT_REG_MSB 0x30DF #define IMX274_VWINPOS_REG_LSB 0x30E0 #define IMX274_VWINPOS_REG_MSB 0x30E1 #define IMX274_WRITE_VSIZE_REG_LSB 0x3130 #define IMX274_WRITE_VSIZE_REG_MSB 0x3131 #define IMX274_Y_OUT_SIZE_REG_LSB 0x3132 #define IMX274_Y_OUT_SIZE_REG_MSB 0x3133 #define IMX274_VMAX_REG_1 0x30FA /* VMAX, MSB */ #define IMX274_VMAX_REG_2 0x30F9 /* VMAX */ #define IMX274_VMAX_REG_3 0x30F8 /* VMAX, LSB */ #define IMX274_HMAX_REG_MSB 0x30F7 /* HMAX */ #define IMX274_HMAX_REG_LSB 0x30F6 /* HMAX */ #define IMX274_ANALOG_GAIN_ADDR_LSB 0x300A /* ANALOG GAIN LSB */ #define IMX274_ANALOG_GAIN_ADDR_MSB 0x300B /* ANALOG GAIN MSB */ #define IMX274_DIGITAL_GAIN_REG 0x3012 /* Digital Gain */ #define IMX274_VFLIP_REG 0x301A /* VERTICAL FLIP */ #define IMX274_TEST_PATTERN_REG 0x303D /* TEST PATTERN */ #define IMX274_STANDBY_REG 0x3000 /* STANDBY */ #define IMX274_TABLE_WAIT_MS 0 #define IMX274_TABLE_END 1 /* * imx274 I2C operation related structure */ struct reg_8 { <------>u16 addr; <------>u8 val; }; static const struct regmap_config imx274_regmap_config = { <------>.reg_bits = 16, <------>.val_bits = 8, <------>.cache_type = REGCACHE_RBTREE, }; enum imx274_binning { <------>IMX274_BINNING_OFF, <------>IMX274_BINNING_2_1, <------>IMX274_BINNING_3_1, }; /* * Parameters for each imx274 readout mode. * * These are the values to configure the sensor in one of the * implemented modes. * * @init_regs: registers to initialize the mode * @bin_ratio: downscale factor (e.g. 3 for 3:1 binning) * @min_frame_len: Minimum frame length for each mode (see "Frame Rate * Adjustment (CSI-2)" in the datasheet) * @min_SHR: Minimum SHR register value (see "Shutter Setting (CSI-2)" in the * datasheet) * @max_fps: Maximum frames per second * @nocpiop: Number of clocks per internal offset period (see "Integration Time * in Each Readout Drive Mode (CSI-2)" in the datasheet) */ struct imx274_mode { <------>const struct reg_8 *init_regs; <------>unsigned int bin_ratio; <------>int min_frame_len; <------>int min_SHR; <------>int max_fps; <------>int nocpiop; }; /* * imx274 test pattern related structure */ enum { <------>TEST_PATTERN_DISABLED = 0, <------>TEST_PATTERN_ALL_000H, <------>TEST_PATTERN_ALL_FFFH, <------>TEST_PATTERN_ALL_555H, <------>TEST_PATTERN_ALL_AAAH, <------>TEST_PATTERN_VSP_5AH, /* VERTICAL STRIPE PATTERN 555H/AAAH */ <------>TEST_PATTERN_VSP_A5H, /* VERTICAL STRIPE PATTERN AAAH/555H */ <------>TEST_PATTERN_VSP_05H, /* VERTICAL STRIPE PATTERN 000H/555H */ <------>TEST_PATTERN_VSP_50H, /* VERTICAL STRIPE PATTERN 555H/000H */ <------>TEST_PATTERN_VSP_0FH, /* VERTICAL STRIPE PATTERN 000H/FFFH */ <------>TEST_PATTERN_VSP_F0H, /* VERTICAL STRIPE PATTERN FFFH/000H */ <------>TEST_PATTERN_H_COLOR_BARS, <------>TEST_PATTERN_V_COLOR_BARS, }; static const char * const tp_qmenu[] = { <------>"Disabled", <------>"All 000h Pattern", <------>"All FFFh Pattern", <------>"All 555h Pattern", <------>"All AAAh Pattern", <------>"Vertical Stripe (555h / AAAh)", <------>"Vertical Stripe (AAAh / 555h)", <------>"Vertical Stripe (000h / 555h)", <------>"Vertical Stripe (555h / 000h)", <------>"Vertical Stripe (000h / FFFh)", <------>"Vertical Stripe (FFFh / 000h)", <------>"Vertical Color Bars", <------>"Horizontal Color Bars", }; /* * All-pixel scan mode (10-bit) * imx274 mode1(refer to datasheet) register configuration with * 3840x2160 resolution, raw10 data and mipi four lane output */ static const struct reg_8 imx274_mode1_3840x2160_raw10[] = { <------>{0x3004, 0x01}, <------>{0x3005, 0x01}, <------>{0x3006, 0x00}, <------>{0x3007, 0xa2}, <------>{0x3018, 0xA2}, /* output XVS, HVS */ <------>{0x306B, 0x05}, <------>{0x30E2, 0x01}, <------>{0x30EE, 0x01}, <------>{0x3342, 0x0A}, <------>{0x3343, 0x00}, <------>{0x3344, 0x16}, <------>{0x3345, 0x00}, <------>{0x33A6, 0x01}, <------>{0x3528, 0x0E}, <------>{0x3554, 0x1F}, <------>{0x3555, 0x01}, <------>{0x3556, 0x01}, <------>{0x3557, 0x01}, <------>{0x3558, 0x01}, <------>{0x3559, 0x00}, <------>{0x355A, 0x00}, <------>{0x35BA, 0x0E}, <------>{0x366A, 0x1B}, <------>{0x366B, 0x1A}, <------>{0x366C, 0x19}, <------>{0x366D, 0x17}, <------>{0x3A41, 0x08}, <------>{IMX274_TABLE_END, 0x00} }; /* * Horizontal/vertical 2/2-line binning * (Horizontal and vertical weightedbinning, 10-bit) * imx274 mode3(refer to datasheet) register configuration with * 1920x1080 resolution, raw10 data and mipi four lane output */ static const struct reg_8 imx274_mode3_1920x1080_raw10[] = { <------>{0x3004, 0x02}, <------>{0x3005, 0x21}, <------>{0x3006, 0x00}, <------>{0x3007, 0xb1}, <------>{0x3018, 0xA2}, /* output XVS, HVS */ <------>{0x306B, 0x05}, <------>{0x30E2, 0x02}, <------>{0x30EE, 0x01}, <------>{0x3342, 0x0A}, <------>{0x3343, 0x00}, <------>{0x3344, 0x1A}, <------>{0x3345, 0x00}, <------>{0x33A6, 0x01}, <------>{0x3528, 0x0E}, <------>{0x3554, 0x00}, <------>{0x3555, 0x01}, <------>{0x3556, 0x01}, <------>{0x3557, 0x01}, <------>{0x3558, 0x01}, <------>{0x3559, 0x00}, <------>{0x355A, 0x00}, <------>{0x35BA, 0x0E}, <------>{0x366A, 0x1B}, <------>{0x366B, 0x1A}, <------>{0x366C, 0x19}, <------>{0x366D, 0x17}, <------>{0x3A41, 0x08}, <------>{IMX274_TABLE_END, 0x00} }; /* * Vertical 2/3 subsampling binning horizontal 3 binning * imx274 mode5(refer to datasheet) register configuration with * 1280x720 resolution, raw10 data and mipi four lane output */ static const struct reg_8 imx274_mode5_1280x720_raw10[] = { <------>{0x3004, 0x03}, <------>{0x3005, 0x31}, <------>{0x3006, 0x00}, <------>{0x3007, 0xa9}, <------>{0x3018, 0xA2}, /* output XVS, HVS */ <------>{0x306B, 0x05}, <------>{0x30E2, 0x03}, <------>{0x30EE, 0x01}, <------>{0x3342, 0x0A}, <------>{0x3343, 0x00}, <------>{0x3344, 0x1B}, <------>{0x3345, 0x00}, <------>{0x33A6, 0x01}, <------>{0x3528, 0x0E}, <------>{0x3554, 0x00}, <------>{0x3555, 0x01}, <------>{0x3556, 0x01}, <------>{0x3557, 0x01}, <------>{0x3558, 0x01}, <------>{0x3559, 0x00}, <------>{0x355A, 0x00}, <------>{0x35BA, 0x0E}, <------>{0x366A, 0x1B}, <------>{0x366B, 0x19}, <------>{0x366C, 0x17}, <------>{0x366D, 0x17}, <------>{0x3A41, 0x04}, <------>{IMX274_TABLE_END, 0x00} }; /* * imx274 first step register configuration for * starting stream */ static const struct reg_8 imx274_start_1[] = { <------>{IMX274_STANDBY_REG, 0x12}, <------>/* PLRD: clock settings */ <------>{0x3120, 0xF0}, <------>{0x3121, 0x00}, <------>{0x3122, 0x02}, <------>{0x3129, 0x9C}, <------>{0x312A, 0x02}, <------>{0x312D, 0x02}, <------>{0x310B, 0x00}, <------>/* PLSTMG */ <------>{0x304C, 0x00}, /* PLSTMG01 */ <------>{0x304D, 0x03}, <------>{0x331C, 0x1A}, <------>{0x331D, 0x00}, <------>{0x3502, 0x02}, <------>{0x3529, 0x0E}, <------>{0x352A, 0x0E}, <------>{0x352B, 0x0E}, <------>{0x3538, 0x0E}, <------>{0x3539, 0x0E}, <------>{0x3553, 0x00}, <------>{0x357D, 0x05}, <------>{0x357F, 0x05}, <------>{0x3581, 0x04}, <------>{0x3583, 0x76}, <------>{0x3587, 0x01}, <------>{0x35BB, 0x0E}, <------>{0x35BC, 0x0E}, <------>{0x35BD, 0x0E}, <------>{0x35BE, 0x0E}, <------>{0x35BF, 0x0E}, <------>{0x366E, 0x00}, <------>{0x366F, 0x00}, <------>{0x3670, 0x00}, <------>{0x3671, 0x00}, <------>/* PSMIPI */ <------>{0x3304, 0x32}, /* PSMIPI1 */ <------>{0x3305, 0x00}, <------>{0x3306, 0x32}, <------>{0x3307, 0x00}, <------>{0x3590, 0x32}, <------>{0x3591, 0x00}, <------>{0x3686, 0x32}, <------>{0x3687, 0x00}, <------>{IMX274_TABLE_END, 0x00} }; /* * imx274 second step register configuration for * starting stream */ static const struct reg_8 imx274_start_2[] = { <------>{IMX274_STANDBY_REG, 0x00}, <------>{0x303E, 0x02}, /* SYS_MODE = 2 */ <------>{IMX274_TABLE_END, 0x00} }; /* * imx274 third step register configuration for * starting stream */ static const struct reg_8 imx274_start_3[] = { <------>{0x30F4, 0x00}, <------>{0x3018, 0xA2}, /* XHS VHS OUTPUT */ <------>{IMX274_TABLE_END, 0x00} }; /* * imx274 register configuration for stopping stream */ static const struct reg_8 imx274_stop[] = { <------>{IMX274_STANDBY_REG, 0x01}, <------>{IMX274_TABLE_END, 0x00} }; /* * imx274 disable test pattern register configuration */ static const struct reg_8 imx274_tp_disabled[] = { <------>{0x303C, 0x00}, <------>{0x377F, 0x00}, <------>{0x3781, 0x00}, <------>{0x370B, 0x00}, <------>{IMX274_TABLE_END, 0x00} }; /* * imx274 test pattern register configuration * reg 0x303D defines the test pattern modes */ static const struct reg_8 imx274_tp_regs[] = { <------>{0x303C, 0x11}, <------>{0x370E, 0x01}, <------>{0x377F, 0x01}, <------>{0x3781, 0x01}, <------>{0x370B, 0x11}, <------>{IMX274_TABLE_END, 0x00} }; /* nocpiop happens to be the same number for the implemented modes */ static const struct imx274_mode imx274_modes[] = { <------>{ <------><------>/* mode 1, 4K */ <------><------>.bin_ratio = 1, <------><------>.init_regs = imx274_mode1_3840x2160_raw10, <------><------>.min_frame_len = 4550, <------><------>.min_SHR = 12, <------><------>.max_fps = 60, <------><------>.nocpiop = 112, <------>}, <------>{ <------><------>/* mode 3, 1080p */ <------><------>.bin_ratio = 2, <------><------>.init_regs = imx274_mode3_1920x1080_raw10, <------><------>.min_frame_len = 2310, <------><------>.min_SHR = 8, <------><------>.max_fps = 120, <------><------>.nocpiop = 112, <------>}, <------>{ <------><------>/* mode 5, 720p */ <------><------>.bin_ratio = 3, <------><------>.init_regs = imx274_mode5_1280x720_raw10, <------><------>.min_frame_len = 2310, <------><------>.min_SHR = 8, <------><------>.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 * @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 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; } /** * 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; } /** * 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; <------>/* <------> * 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); } /** * 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; <------>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; <------>} <------>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; } /** * 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 * @cfg: The pad config 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_pad_config *cfg, <------><------><------><------> 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 = &cfg->try_crop; <------><------>tgt_fmt = &cfg->try_fmt; <------>} else { <------><------>cur_crop = &imx274->crop; <------><------>tgt_fmt = &imx274->format; <------>} <------>for (i = 0; i < ARRAY_SIZE(imx274_modes); i++) { <------><------>unsigned int ratio = imx274_modes[i].bin_ratio; <------><------>int goodness = imx274_binning_goodness( <------><------><------>imx274, <------><------><------>cur_crop->width / ratio, *width, <------><------><------>cur_crop->height / ratio, *height, <------><------><------>flags); <------><------>if (goodness >= best_goodness) { <------><------><------>best_goodness = goodness; <------><------><------>best_mode = &imx274_modes[i]; <------><------>} <------>} <------>*width = cur_crop->width / best_mode->bin_ratio; <------>*height = cur_crop->height / best_mode->bin_ratio; <------>if (which == V4L2_SUBDEV_FORMAT_ACTIVE) <------><------>imx274->mode = best_mode; <------>dev_dbg(dev, "%s: selected %u:1 binning\n", <------><------>__func__, best_mode->bin_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 * @cfg: Pointer to sub device pad information 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_pad_config *cfg, <------><------><------> 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 * @cfg: Pointer to sub device pad 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_pad_config *cfg, <------><------><------> 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, cfg, 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) <------><------>cfg->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_pad_config *cfg, <------><------><------><------>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 = &cfg->try_crop; <------><------>src_fmt = &cfg->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_pad_config *cfg, <------><------><------><------> 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 = &cfg->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, cfg, 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_pad_config *cfg, <------><------><------><------>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, cfg, sel); <------>if (sel->target == V4L2_SEL_TGT_COMPOSE) { <------><------>int err; <------><------>mutex_lock(&imx274->lock); <------><------>err = __imx274_change_compose(imx274, cfg, 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 + 14; <------>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; <------><------>if (__v4l2_ctrl_modify_range(ctrl, min, max, 1, def)) { <------><------><------>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 int imx274_load_default(struct stimx274 *priv) { <------>int ret; <------>/* 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; <------>/* update frame rate */ <------>ret = imx274_set_frame_interval(priv, <------><------><------><------><------>priv->frame_interval); <------>if (ret) <------><------>return ret; <------>/* update exposure time */ <------>ret = v4l2_ctrl_s_ctrl(priv->ctrls.exposure, priv->ctrls.exposure->val); <------>if (ret) <------><------>return ret; <------>/* update gain */ <------>ret = v4l2_ctrl_s_ctrl(priv->ctrls.gain, priv->ctrls.gain->val); <------>if (ret) <------><------>return ret; <------>/* update vflip */ <------>ret = v4l2_ctrl_s_ctrl(priv->ctrls.vflip, priv->ctrls.vflip->val); <------>if (ret) <------><------>return ret; <------>return 0; } /** * 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) { <------><------>/* 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; <------><------>/* update exposure time */ <------><------>ret = __v4l2_ctrl_s_ctrl(imx274->ctrls.exposure, <------><------><------><------><------> imx274->ctrls.exposure->val); <------><------>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; <------>} <------>mutex_unlock(&imx274->lock); <------>dev_dbg(&imx274->client->dev, "%s : Done\n", __func__); <------>return 0; fail: <------>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); <------>/* initialize format */ <------>imx274->mode = &imx274_modes[IMX274_DEFAULT_BINNING]; <------>imx274->crop.width = IMX274_MAX_WIDTH; <------>imx274->crop.height = IMX274_MAX_HEIGHT; <------>imx274->format.width = imx274->crop.width / imx274->mode->bin_ratio; <------>imx274->format.height = imx274->crop.height / imx274->mode->bin_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; <------>} <------>/* pull sensor out of reset */ <------>imx274_reset(imx274, 1); <------>/* 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_me; <------>} <------>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; <------>} <------>/* setup default controls */ <------>ret = v4l2_ctrl_handler_setup(&imx274->ctrls.handler); <------>if (ret) { <------><------>dev_err(&client->dev, <------><------><------>"Error %d setup default controls\n", ret); <------><------>goto err_ctrls; <------>} <------>/* load default control values */ <------>ret = imx274_load_default(imx274); <------>if (ret) { <------><------>dev_err(&client->dev, <------><------><------>"%s : imx274_load_default failed %d\n", <------><------><------>__func__, ret); <------><------>goto err_ctrls; <------>} <------>/* 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; <------>} <------>dev_info(&client->dev, "imx274 : imx274 probe success !\n"); <------>return 0; err_ctrls: <------>v4l2_ctrl_handler_free(&imx274->ctrls.handler); 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); <------>/* stop stream */ <------>imx274_write_table(imx274, imx274_stop); <------>v4l2_async_unregister_subdev(sd); <------>v4l2_ctrl_handler_free(&imx274->ctrls.handler); <------>media_entity_cleanup(&sd->entity); <------>mutex_destroy(&imx274->lock); <------>return 0; } static struct i2c_driver imx274_i2c_driver = { <------>.driver = { <------><------>.name = DRIVER_NAME, <------><------>.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 <leonl@leopardimaging.com>"); MODULE_DESCRIPTION("IMX274 CMOS Image Sensor driver"); MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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