// SPDX-License-Identifier: GPL-2.0 /* * A V4L2 driver for Sony IMX219 cameras. * Copyright (C) 2019, Raspberry Pi (Trading) Ltd * * Based on Sony imx258 camera driver * Copyright (C) 2018 Intel Corporation * * DT / fwnode changes, and regulator / GPIO control taken from imx214 driver * Copyright 2018 Qtechnology A/S * * Flip handling taken from the Sony IMX319 driver. * Copyright (C) 2018 Intel Corporation * */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/minmax.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <media/v4l2-cci.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-mediabus.h> /* Chip ID */ #define IMX219_REG_CHIP_ID … #define IMX219_CHIP_ID … #define IMX219_REG_MODE_SELECT … #define IMX219_MODE_STANDBY … #define IMX219_MODE_STREAMING … #define IMX219_REG_CSI_LANE_MODE … #define IMX219_CSI_2_LANE_MODE … #define IMX219_CSI_4_LANE_MODE … #define IMX219_REG_DPHY_CTRL … #define IMX219_DPHY_CTRL_TIMING_AUTO … #define IMX219_DPHY_CTRL_TIMING_MANUAL … #define IMX219_REG_EXCK_FREQ … #define IMX219_EXCK_FREQ(n) … /* Analog gain control */ #define IMX219_REG_ANALOG_GAIN … #define IMX219_ANA_GAIN_MIN … #define IMX219_ANA_GAIN_MAX … #define IMX219_ANA_GAIN_STEP … #define IMX219_ANA_GAIN_DEFAULT … /* Digital gain control */ #define IMX219_REG_DIGITAL_GAIN … #define IMX219_DGTL_GAIN_MIN … #define IMX219_DGTL_GAIN_MAX … #define IMX219_DGTL_GAIN_DEFAULT … #define IMX219_DGTL_GAIN_STEP … /* Exposure control */ #define IMX219_REG_EXPOSURE … #define IMX219_EXPOSURE_MIN … #define IMX219_EXPOSURE_STEP … #define IMX219_EXPOSURE_DEFAULT … #define IMX219_EXPOSURE_MAX … /* V_TIMING internal */ #define IMX219_REG_VTS … #define IMX219_VTS_MAX … #define IMX219_VBLANK_MIN … /* HBLANK control - read only */ #define IMX219_PPL_DEFAULT … #define IMX219_REG_LINE_LENGTH_A … #define IMX219_REG_X_ADD_STA_A … #define IMX219_REG_X_ADD_END_A … #define IMX219_REG_Y_ADD_STA_A … #define IMX219_REG_Y_ADD_END_A … #define IMX219_REG_X_OUTPUT_SIZE … #define IMX219_REG_Y_OUTPUT_SIZE … #define IMX219_REG_X_ODD_INC_A … #define IMX219_REG_Y_ODD_INC_A … #define IMX219_REG_ORIENTATION … /* Binning Mode */ #define IMX219_REG_BINNING_MODE_H … #define IMX219_REG_BINNING_MODE_V … #define IMX219_BINNING_NONE … #define IMX219_BINNING_X2 … #define IMX219_BINNING_X2_ANALOG … #define IMX219_REG_CSI_DATA_FORMAT_A … /* PLL Settings */ #define IMX219_REG_VTPXCK_DIV … #define IMX219_REG_VTSYCK_DIV … #define IMX219_REG_PREPLLCK_VT_DIV … #define IMX219_REG_PREPLLCK_OP_DIV … #define IMX219_REG_PLL_VT_MPY … #define IMX219_REG_OPPXCK_DIV … #define IMX219_REG_OPSYCK_DIV … #define IMX219_REG_PLL_OP_MPY … /* Test Pattern Control */ #define IMX219_REG_TEST_PATTERN … #define IMX219_TEST_PATTERN_DISABLE … #define IMX219_TEST_PATTERN_SOLID_COLOR … #define IMX219_TEST_PATTERN_COLOR_BARS … #define IMX219_TEST_PATTERN_GREY_COLOR … #define IMX219_TEST_PATTERN_PN9 … /* Test pattern colour components */ #define IMX219_REG_TESTP_RED … #define IMX219_REG_TESTP_GREENR … #define IMX219_REG_TESTP_BLUE … #define IMX219_REG_TESTP_GREENB … #define IMX219_TESTP_COLOUR_MIN … #define IMX219_TESTP_COLOUR_MAX … #define IMX219_TESTP_COLOUR_STEP … #define IMX219_REG_TP_WINDOW_WIDTH … #define IMX219_REG_TP_WINDOW_HEIGHT … /* External clock frequency is 24.0M */ #define IMX219_XCLK_FREQ … /* Pixel rate is fixed for all the modes */ #define IMX219_PIXEL_RATE … #define IMX219_PIXEL_RATE_4LANE … #define IMX219_DEFAULT_LINK_FREQ … #define IMX219_DEFAULT_LINK_FREQ_4LANE … /* IMX219 native and active pixel array size. */ #define IMX219_NATIVE_WIDTH … #define IMX219_NATIVE_HEIGHT … #define IMX219_PIXEL_ARRAY_LEFT … #define IMX219_PIXEL_ARRAY_TOP … #define IMX219_PIXEL_ARRAY_WIDTH … #define IMX219_PIXEL_ARRAY_HEIGHT … /* Mode : resolution and related config&values */ struct imx219_mode { … }; static const struct cci_reg_sequence imx219_common_regs[] = …; static const s64 imx219_link_freq_menu[] = …; static const s64 imx219_link_freq_4lane_menu[] = …; static const char * const imx219_test_pattern_menu[] = …; static const int imx219_test_pattern_val[] = …; /* regulator supplies */ static const char * const imx219_supply_name[] = …; #define IMX219_NUM_SUPPLIES … /* * The supported formats. * This table MUST contain 4 entries per format, to cover the various flip * combinations in the order * - no flip * - h flip * - v flip * - h&v flips */ static const u32 imx219_mbus_formats[] = …; /* * Initialisation delay between XCLR low->high and the moment when the sensor * can start capture (i.e. can leave software stanby) must be not less than: * t4 + max(t5, t6 + <time to initialize the sensor register over I2C>) * where * t4 is fixed, and is max 200uS, * t5 is fixed, and is 6000uS, * t6 depends on the sensor external clock, and is max 32000 clock periods. * As per sensor datasheet, the external clock must be from 6MHz to 27MHz. * So for any acceptable external clock t6 is always within the range of * 1185 to 5333 uS, and is always less than t5. * For this reason this is always safe to wait (t4 + t5) = 6200 uS, then * initialize the sensor over I2C, and then exit the software standby. * * This start-up time can be optimized a bit more, if we start the writes * over I2C after (t4+t6), but before (t4+t5) expires. But then sensor * initialization over I2C may complete before (t4+t5) expires, and we must * ensure that capture is not started before (t4+t5). * * This delay doesn't account for the power supply startup time. If needed, * this should be taken care of via the regulator framework. E.g. in the * case of DT for regulator-fixed one should define the startup-delay-us * property. */ #define IMX219_XCLR_MIN_DELAY_US … #define IMX219_XCLR_DELAY_RANGE_US … /* Mode configs */ static const struct imx219_mode supported_modes[] = …; struct imx219 { … }; static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd) { … } /* Get bayer order based on flip setting. */ static u32 imx219_get_format_code(struct imx219 *imx219, u32 code) { … } /* ----------------------------------------------------------------------------- * Controls */ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops imx219_ctrl_ops = …; static unsigned long imx219_get_pixel_rate(struct imx219 *imx219) { … } /* Initialize control handlers */ static int imx219_init_controls(struct imx219 *imx219) { … } static void imx219_free_controls(struct imx219 *imx219) { … } /* ----------------------------------------------------------------------------- * Subdev operations */ static int imx219_set_framefmt(struct imx219 *imx219, struct v4l2_subdev_state *state) { … } static int imx219_configure_lanes(struct imx219 *imx219) { return cci_write(imx219->regmap, IMX219_REG_CSI_LANE_MODE, imx219->lanes == 2 ? IMX219_CSI_2_LANE_MODE : IMX219_CSI_4_LANE_MODE, NULL); }; static int imx219_start_streaming(struct imx219 *imx219, struct v4l2_subdev_state *state) { … } static void imx219_stop_streaming(struct imx219 *imx219) { … } static int imx219_set_stream(struct v4l2_subdev *sd, int enable) { … } static void imx219_update_pad_format(struct imx219 *imx219, const struct imx219_mode *mode, struct v4l2_mbus_framefmt *fmt, u32 code) { … } static int imx219_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_mbus_code_enum *code) { … } static int imx219_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_size_enum *fse) { … } static int imx219_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *fmt) { … } static int imx219_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { … } static int imx219_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state) { … } static const struct v4l2_subdev_core_ops imx219_core_ops = …; static const struct v4l2_subdev_video_ops imx219_video_ops = …; static const struct v4l2_subdev_pad_ops imx219_pad_ops = …; static const struct v4l2_subdev_ops imx219_subdev_ops = …; static const struct v4l2_subdev_internal_ops imx219_internal_ops = …; /* ----------------------------------------------------------------------------- * Power management */ static int imx219_power_on(struct device *dev) { … } static int imx219_power_off(struct device *dev) { … } /* ----------------------------------------------------------------------------- * Probe & remove */ static int imx219_get_regulators(struct imx219 *imx219) { … } /* Verify chip ID */ static int imx219_identify_module(struct imx219 *imx219) { … } static int imx219_check_hwcfg(struct device *dev, struct imx219 *imx219) { … } static int imx219_probe(struct i2c_client *client) { … } static void imx219_remove(struct i2c_client *client) { … } static const struct of_device_id imx219_dt_ids[] = …; MODULE_DEVICE_TABLE(of, imx219_dt_ids); static const struct dev_pm_ops imx219_pm_ops = …; static struct i2c_driver imx219_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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