// SPDX-License-Identifier: GPL-2.0-only /* * Sony imx334 sensor driver * * Copyright (C) 2021 Intel Corporation */ #include <linux/unaligned.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-subdev.h> /* Streaming Mode */ #define IMX334_REG_MODE_SELECT … #define IMX334_MODE_STANDBY … #define IMX334_MODE_STREAMING … /* Lines per frame */ #define IMX334_REG_LPFR … /* Chip ID */ #define IMX334_REG_ID … #define IMX334_ID … /* Exposure control */ #define IMX334_REG_SHUTTER … #define IMX334_EXPOSURE_MIN … #define IMX334_EXPOSURE_OFFSET … #define IMX334_EXPOSURE_STEP … #define IMX334_EXPOSURE_DEFAULT … /* Analog gain control */ #define IMX334_REG_AGAIN … #define IMX334_AGAIN_MIN … #define IMX334_AGAIN_MAX … #define IMX334_AGAIN_STEP … #define IMX334_AGAIN_DEFAULT … /* Group hold register */ #define IMX334_REG_HOLD … /* Input clock rate */ #define IMX334_INCLK_RATE … /* CSI2 HW configuration */ #define IMX334_LINK_FREQ_891M … #define IMX334_LINK_FREQ_445M … #define IMX334_NUM_DATA_LANES … #define IMX334_REG_MIN … #define IMX334_REG_MAX … /* Test Pattern Control */ #define IMX334_REG_TP … #define IMX334_TP_COLOR_HBARS … #define IMX334_TP_COLOR_VBARS … #define IMX334_TPG_EN_DOUT … #define IMX334_TP_ENABLE … #define IMX334_TP_DISABLE … #define IMX334_TPG_COLORW … #define IMX334_TPG_COLORW_120P … #define IMX334_TP_CLK_EN … #define IMX334_TP_CLK_EN_VAL … #define IMX334_TP_CLK_DIS_VAL … #define IMX334_DIG_CLP_MODE … /** * struct imx334_reg - imx334 sensor register * @address: Register address * @val: Register value */ struct imx334_reg { … }; /** * struct imx334_reg_list - imx334 sensor register list * @num_of_regs: Number of registers in the list * @regs: Pointer to register list */ struct imx334_reg_list { … }; /** * struct imx334_mode - imx334 sensor mode structure * @width: Frame width * @height: Frame height * @hblank: Horizontal blanking in lines * @vblank: Vertical blanking in lines * @vblank_min: Minimal vertical blanking in lines * @vblank_max: Maximum vertical blanking in lines * @pclk: Sensor pixel clock * @link_freq_idx: Link frequency index * @reg_list: Register list for sensor mode */ struct imx334_mode { … }; /** * struct imx334 - imx334 sensor device structure * @dev: Pointer to generic device * @client: Pointer to i2c client * @sd: V4L2 sub-device * @pad: Media pad. Only one pad supported * @reset_gpio: Sensor reset gpio * @inclk: Sensor input clock * @ctrl_handler: V4L2 control handler * @link_freq_ctrl: Pointer to link frequency control * @pclk_ctrl: Pointer to pixel clock control * @hblank_ctrl: Pointer to horizontal blanking control * @vblank_ctrl: Pointer to vertical blanking control * @exp_ctrl: Pointer to exposure control * @again_ctrl: Pointer to analog gain control * @vblank: Vertical blanking in lines * @cur_mode: Pointer to current selected sensor mode * @mutex: Mutex for serializing sensor controls * @link_freq_bitmap: Menu bitmap for link_freq_ctrl * @cur_code: current selected format code */ struct imx334 { … }; static const s64 link_freq[] = …; /* Sensor mode registers for 1920x1080@30fps */ static const struct imx334_reg mode_1920x1080_regs[] = …; /* Sensor mode registers for 3840x2160@30fps */ static const struct imx334_reg mode_3840x2160_regs[] = …; static const char * const imx334_test_pattern_menu[] = …; static const int imx334_test_pattern_val[] = …; static const struct imx334_reg raw10_framefmt_regs[] = …; static const struct imx334_reg raw12_framefmt_regs[] = …; static const u32 imx334_mbus_codes[] = …; /* Supported sensor mode configurations */ static const struct imx334_mode supported_modes[] = …; /** * to_imx334() - imv334 V4L2 sub-device to imx334 device. * @subdev: pointer to imx334 V4L2 sub-device * * Return: pointer to imx334 device */ static inline struct imx334 *to_imx334(struct v4l2_subdev *subdev) { … } /** * imx334_read_reg() - Read registers. * @imx334: pointer to imx334 device * @reg: register address * @len: length of bytes to read. Max supported bytes is 4 * @val: pointer to register value to be filled. * * Big endian register addresses with little endian values. * * Return: 0 if successful, error code otherwise. */ static int imx334_read_reg(struct imx334 *imx334, u16 reg, u32 len, u32 *val) { … } /** * imx334_write_reg() - Write register * @imx334: pointer to imx334 device * @reg: register address * @len: length of bytes. Max supported bytes is 4 * @val: register value * * Big endian register addresses with little endian values. * * Return: 0 if successful, error code otherwise. */ static int imx334_write_reg(struct imx334 *imx334, u16 reg, u32 len, u32 val) { … } /** * imx334_write_regs() - Write a list of registers * @imx334: pointer to imx334 device * @regs: list of registers to be written * @len: length of registers array * * Return: 0 if successful, error code otherwise. */ static int imx334_write_regs(struct imx334 *imx334, const struct imx334_reg *regs, u32 len) { … } /** * imx334_update_controls() - Update control ranges based on streaming mode * @imx334: pointer to imx334 device * @mode: pointer to imx334_mode sensor mode * * Return: 0 if successful, error code otherwise. */ static int imx334_update_controls(struct imx334 *imx334, const struct imx334_mode *mode) { … } /** * imx334_update_exp_gain() - Set updated exposure and gain * @imx334: pointer to imx334 device * @exposure: updated exposure value * @gain: updated analog gain value * * Return: 0 if successful, error code otherwise. */ static int imx334_update_exp_gain(struct imx334 *imx334, u32 exposure, u32 gain) { … } /** * imx334_set_ctrl() - Set subdevice control * @ctrl: pointer to v4l2_ctrl structure * * Supported controls: * - V4L2_CID_VBLANK * - cluster controls: * - V4L2_CID_ANALOGUE_GAIN * - V4L2_CID_EXPOSURE * * Return: 0 if successful, error code otherwise. */ static int imx334_set_ctrl(struct v4l2_ctrl *ctrl) { … } /* V4l2 subdevice control ops*/ static const struct v4l2_ctrl_ops imx334_ctrl_ops = …; static int imx334_get_format_code(struct imx334 *imx334, u32 code) { … } /** * imx334_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes * @sd: pointer to imx334 V4L2 sub-device structure * @sd_state: V4L2 sub-device state * @code: V4L2 sub-device code enumeration need to be filled * * Return: 0 if successful, error code otherwise. */ static int imx334_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } /** * imx334_enum_frame_size() - Enumerate V4L2 sub-device frame sizes * @sd: pointer to imx334 V4L2 sub-device structure * @sd_state: V4L2 sub-device state * @fsize: V4L2 sub-device size enumeration need to be filled * * Return: 0 if successful, error code otherwise. */ static int imx334_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fsize) { … } /** * imx334_fill_pad_format() - Fill subdevice pad format * from selected sensor mode * @imx334: pointer to imx334 device * @mode: pointer to imx334_mode sensor mode * @fmt: V4L2 sub-device format need to be filled */ static void imx334_fill_pad_format(struct imx334 *imx334, const struct imx334_mode *mode, struct v4l2_subdev_format *fmt) { … } /** * imx334_get_pad_format() - Get subdevice pad format * @sd: pointer to imx334 V4L2 sub-device structure * @sd_state: V4L2 sub-device state * @fmt: V4L2 sub-device format need to be set * * Return: 0 if successful, error code otherwise. */ static int imx334_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } /** * imx334_set_pad_format() - Set subdevice pad format * @sd: pointer to imx334 V4L2 sub-device structure * @sd_state: V4L2 sub-device state * @fmt: V4L2 sub-device format need to be set * * Return: 0 if successful, error code otherwise. */ static int imx334_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } /** * imx334_init_state() - Initialize sub-device state * @sd: pointer to imx334 V4L2 sub-device structure * @sd_state: V4L2 sub-device state * * Return: 0 if successful, error code otherwise. */ static int imx334_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state) { … } static int imx334_set_framefmt(struct imx334 *imx334) { … } /** * imx334_start_streaming() - Start sensor stream * @imx334: pointer to imx334 device * * Return: 0 if successful, error code otherwise. */ static int imx334_start_streaming(struct imx334 *imx334) { … } /** * imx334_stop_streaming() - Stop sensor stream * @imx334: pointer to imx334 device * * Return: 0 if successful, error code otherwise. */ static int imx334_stop_streaming(struct imx334 *imx334) { … } /** * imx334_set_stream() - Enable sensor streaming * @sd: pointer to imx334 subdevice * @enable: set to enable sensor streaming * * Return: 0 if successful, error code otherwise. */ static int imx334_set_stream(struct v4l2_subdev *sd, int enable) { … } /** * imx334_detect() - Detect imx334 sensor * @imx334: pointer to imx334 device * * Return: 0 if successful, -EIO if sensor id does not match */ static int imx334_detect(struct imx334 *imx334) { … } /** * imx334_parse_hw_config() - Parse HW configuration and check if supported * @imx334: pointer to imx334 device * * Return: 0 if successful, error code otherwise. */ static int imx334_parse_hw_config(struct imx334 *imx334) { … } /* V4l2 subdevice ops */ static const struct v4l2_subdev_video_ops imx334_video_ops = …; static const struct v4l2_subdev_pad_ops imx334_pad_ops = …; static const struct v4l2_subdev_ops imx334_subdev_ops = …; static const struct v4l2_subdev_internal_ops imx334_internal_ops = …; /** * imx334_power_on() - Sensor power on sequence * @dev: pointer to i2c device * * Return: 0 if successful, error code otherwise. */ static int imx334_power_on(struct device *dev) { … } /** * imx334_power_off() - Sensor power off sequence * @dev: pointer to i2c device * * Return: 0 if successful, error code otherwise. */ static int imx334_power_off(struct device *dev) { … } /** * imx334_init_controls() - Initialize sensor subdevice controls * @imx334: pointer to imx334 device * * Return: 0 if successful, error code otherwise. */ static int imx334_init_controls(struct imx334 *imx334) { … } /** * imx334_probe() - I2C client device binding * @client: pointer to i2c client device * * Return: 0 if successful, error code otherwise. */ static int imx334_probe(struct i2c_client *client) { … } /** * imx334_remove() - I2C client device unbinding * @client: pointer to I2C client device * * Return: 0 if successful, error code otherwise. */ static void imx334_remove(struct i2c_client *client) { … } static const struct dev_pm_ops imx334_pm_ops = …; static const struct of_device_id imx334_of_match[] = …; MODULE_DEVICE_TABLE(of, imx334_of_match); static struct i2c_driver imx334_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux