// SPDX-License-Identifier: GPL-2.0+ /* * Maxim MAX9286 GMSL Deserializer Driver * * Copyright (C) 2017-2019 Jacopo Mondi * Copyright (C) 2017-2019 Kieran Bingham * Copyright (C) 2017-2019 Laurent Pinchart * Copyright (C) 2017-2019 Niklas Söderlund * Copyright (C) 2016 Renesas Electronics Corporation * Copyright (C) 2015 Cogent Embedded, Inc. */ #include <linux/delay.h> #include <linux/device.h> #include <linux/fwnode.h> #include <linux/gpio/consumer.h> #include <linux/gpio/driver.h> #include <linux/gpio/machine.h> #include <linux/i2c.h> #include <linux/i2c-mux.h> #include <linux/module.h> #include <linux/of_graph.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <media/v4l2-async.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-subdev.h> /* Register 0x00 */ #define MAX9286_MSTLINKSEL_AUTO … #define MAX9286_MSTLINKSEL(n) … #define MAX9286_EN_VS_GEN … #define MAX9286_LINKEN(n) … /* Register 0x01 */ #define MAX9286_FSYNCMODE_ECU … #define MAX9286_FSYNCMODE_EXT … #define MAX9286_FSYNCMODE_INT_OUT … #define MAX9286_FSYNCMODE_INT_HIZ … #define MAX9286_GPIEN … #define MAX9286_ENLMO_RSTFSYNC … #define MAX9286_FSYNCMETH_AUTO … #define MAX9286_FSYNCMETH_SEMI_AUTO … #define MAX9286_FSYNCMETH_MANUAL … #define MAX9286_REG_FSYNC_PERIOD_L … #define MAX9286_REG_FSYNC_PERIOD_M … #define MAX9286_REG_FSYNC_PERIOD_H … /* Register 0x0a */ #define MAX9286_FWDCCEN(n) … #define MAX9286_REVCCEN(n) … /* Register 0x0c */ #define MAX9286_HVEN … #define MAX9286_EDC_6BIT_HAMMING … #define MAX9286_EDC_6BIT_CRC … #define MAX9286_EDC_1BIT_PARITY … #define MAX9286_DESEL … #define MAX9286_INVVS … #define MAX9286_INVHS … #define MAX9286_HVSRC_D0 … #define MAX9286_HVSRC_D14 … #define MAX9286_HVSRC_D18 … /* Register 0x0f */ #define MAX9286_0X0F_RESERVED … /* Register 0x12 */ #define MAX9286_CSILANECNT(n) … #define MAX9286_CSIDBL … #define MAX9286_DBL … #define MAX9286_DATATYPE_USER_8BIT … #define MAX9286_DATATYPE_USER_YUV_12BIT … #define MAX9286_DATATYPE_USER_24BIT … #define MAX9286_DATATYPE_RAW14 … #define MAX9286_DATATYPE_RAW12 … #define MAX9286_DATATYPE_RAW10 … #define MAX9286_DATATYPE_RAW8 … #define MAX9286_DATATYPE_YUV422_10BIT … #define MAX9286_DATATYPE_YUV422_8BIT … #define MAX9286_DATATYPE_RGB555 … #define MAX9286_DATATYPE_RGB565 … #define MAX9286_DATATYPE_RGB888 … /* Register 0x15 */ #define MAX9286_CSI_IMAGE_TYP … #define MAX9286_VC(n) … #define MAX9286_VCTYPE … #define MAX9286_CSIOUTEN … #define MAX9286_SWP_ENDIAN … #define MAX9286_EN_CCBSYB_CLK_STR … #define MAX9286_EN_GPI_CCBSYB … /* Register 0x1b */ #define MAX9286_SWITCHIN(n) … #define MAX9286_ENEQ(n) … /* Register 0x1c */ #define MAX9286_HIGHIMM(n) … #define MAX9286_I2CSEL … #define MAX9286_HIBW … #define MAX9286_BWS … /* Register 0x27 */ #define MAX9286_LOCKED … /* Register 0x31 */ #define MAX9286_FSYNC_LOCKED … /* Register 0x34 */ #define MAX9286_I2CLOCACK … #define MAX9286_I2CSLVSH_1046NS_469NS … #define MAX9286_I2CSLVSH_938NS_352NS … #define MAX9286_I2CSLVSH_469NS_234NS … #define MAX9286_I2CSLVSH_352NS_117NS … #define MAX9286_I2CMSTBT_837KBPS … #define MAX9286_I2CMSTBT_533KBPS … #define MAX9286_I2CMSTBT_339KBPS … #define MAX9286_I2CMSTBT_173KBPS … #define MAX9286_I2CMSTBT_105KBPS … #define MAX9286_I2CMSTBT_84KBPS … #define MAX9286_I2CMSTBT_28KBPS … #define MAX9286_I2CMSTBT_8KBPS … #define MAX9286_I2CSLVTO_NONE … #define MAX9286_I2CSLVTO_1024US … #define MAX9286_I2CSLVTO_256US … #define MAX9286_I2CSLVTO_64US … /* Register 0x3b */ #define MAX9286_REV_TRF(n) … #define MAX9286_REV_AMP(n) … #define MAX9286_REV_AMP_X … #define MAX9286_REV_AMP_HIGH … /* Register 0x3f */ #define MAX9286_EN_REV_CFG … #define MAX9286_REV_FLEN(n) … /* Register 0x49 */ #define MAX9286_VIDEO_DETECT_MASK … /* Register 0x69 */ #define MAX9286_LFLTBMONMASKED … #define MAX9286_LOCKMONMASKED … #define MAX9286_AUTOCOMBACKEN … #define MAX9286_AUTOMASKEN … #define MAX9286_MASKLINK(n) … /* * The sink and source pads are created to match the OF graph port numbers so * that their indexes can be used interchangeably. */ #define MAX9286_NUM_GMSL … #define MAX9286_N_SINKS … #define MAX9286_N_PADS … #define MAX9286_SRC_PAD … struct max9286_format_info { … }; struct max9286_i2c_speed { … }; struct max9286_source { … }; struct max9286_asd { … }; static inline struct max9286_asd * to_max9286_asd(struct v4l2_async_connection *asd) { … } struct max9286_priv { … }; static struct max9286_source *next_source(struct max9286_priv *priv, struct max9286_source *source) { … } #define for_each_source(priv, source) … #define to_index(priv, source) … static inline struct max9286_priv *sd_to_max9286(struct v4l2_subdev *sd) { … } static const struct max9286_format_info max9286_formats[] = …; static const struct max9286_i2c_speed max9286_i2c_speeds[] = …; /* ----------------------------------------------------------------------------- * I2C IO */ static int max9286_read(struct max9286_priv *priv, u8 reg) { … } static int max9286_write(struct max9286_priv *priv, u8 reg, u8 val) { … } /* ----------------------------------------------------------------------------- * I2C Multiplexer */ static void max9286_i2c_mux_configure(struct max9286_priv *priv, u8 conf) { … } static void max9286_i2c_mux_open(struct max9286_priv *priv) { … } static void max9286_i2c_mux_close(struct max9286_priv *priv) { … } static int max9286_i2c_mux_select(struct i2c_mux_core *muxc, u32 chan) { … } static int max9286_i2c_mux_init(struct max9286_priv *priv) { … } static void max9286_configure_i2c(struct max9286_priv *priv, bool localack) { … } static void max9286_reverse_channel_setup(struct max9286_priv *priv, unsigned int chan_amplitude) { … } /* * max9286_check_video_links() - Make sure video links are detected and locked * * Performs safety checks on video link status. Make sure they are detected * and all enabled links are locked. * * Returns 0 for success, -EIO for errors. */ static int max9286_check_video_links(struct max9286_priv *priv) { … } /* * max9286_check_config_link() - Detect and wait for configuration links * * Determine if the configuration channel is up and settled for a link. * * Returns 0 for success, -EIO for errors. */ static int max9286_check_config_link(struct max9286_priv *priv, unsigned int source_mask) { … } static void max9286_set_video_format(struct max9286_priv *priv, const struct v4l2_mbus_framefmt *format) { … } static void max9286_set_fsync_period(struct max9286_priv *priv, struct v4l2_subdev_state *state) { … } /* ----------------------------------------------------------------------------- * V4L2 Subdev */ static int max9286_set_pixelrate(struct max9286_priv *priv) { … } static int max9286_notify_bound(struct v4l2_async_notifier *notifier, struct v4l2_subdev *subdev, struct v4l2_async_connection *asd) { … } static void max9286_notify_unbind(struct v4l2_async_notifier *notifier, struct v4l2_subdev *subdev, struct v4l2_async_connection *asd) { … } static const struct v4l2_async_notifier_operations max9286_notify_ops = …; static int max9286_v4l2_notifier_register(struct max9286_priv *priv) { … } static void max9286_v4l2_notifier_unregister(struct max9286_priv *priv) { … } static int max9286_s_stream(struct v4l2_subdev *sd, int enable) { … } static int max9286_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval *interval) { … } static int max9286_set_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval *interval) { … } static int max9286_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } static int max9286_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { … } static const struct v4l2_subdev_video_ops max9286_video_ops = …; static const struct v4l2_subdev_pad_ops max9286_pad_ops = …; static const struct v4l2_subdev_ops max9286_subdev_ops = …; static const struct v4l2_mbus_framefmt max9286_default_format = …; static int max9286_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state) { … } static const struct v4l2_subdev_internal_ops max9286_subdev_internal_ops = …; static const struct media_entity_operations max9286_media_ops = …; static int max9286_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops max9286_ctrl_ops = …; static int max9286_v4l2_register(struct max9286_priv *priv) { … } static void max9286_v4l2_unregister(struct max9286_priv *priv) { … } /* ----------------------------------------------------------------------------- * Probe/Remove */ static int max9286_setup(struct max9286_priv *priv) { … } static int max9286_gpio_set(struct max9286_priv *priv, unsigned int offset, int value) { … } static void max9286_gpiochip_set(struct gpio_chip *chip, unsigned int offset, int value) { … } static int max9286_gpiochip_get(struct gpio_chip *chip, unsigned int offset) { … } static int max9286_register_gpio(struct max9286_priv *priv) { … } static int max9286_parse_gpios(struct max9286_priv *priv) { … } static int max9286_poc_power_on(struct max9286_priv *priv) { … } static int max9286_poc_power_off(struct max9286_priv *priv) { … } static int max9286_poc_enable(struct max9286_priv *priv, bool enable) { … } static int max9286_init(struct max9286_priv *priv) { … } static void max9286_cleanup_dt(struct max9286_priv *priv) { … } static int max9286_parse_dt(struct max9286_priv *priv) { … } static int max9286_get_poc_supplies(struct max9286_priv *priv) { … } static int max9286_probe(struct i2c_client *client) { … } static void max9286_remove(struct i2c_client *client) { … } static const struct of_device_id max9286_dt_ids[] = …; MODULE_DEVICE_TABLE(of, max9286_dt_ids); static struct i2c_driver max9286_i2c_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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