// SPDX-License-Identifier: GPL-2.0 /* * Driver for the Texas Instruments DS90UB953 video serializer * * Based on a driver from Luca Ceresoli <[email protected]> * * Copyright (c) 2019 Luca Ceresoli <[email protected]> * Copyright (c) 2023 Tomi Valkeinen <[email protected]> */ #include <linux/clk-provider.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/fwnode.h> #include <linux/gpio/driver.h> #include <linux/i2c-atr.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/math64.h> #include <linux/module.h> #include <linux/property.h> #include <linux/rational.h> #include <linux/regmap.h> #include <media/i2c/ds90ub9xx.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> #include <media/v4l2-fwnode.h> #include <media/v4l2-mediabus.h> #include <media/v4l2-subdev.h> #define UB953_PAD_SINK … #define UB953_PAD_SOURCE … #define UB953_NUM_GPIOS … #define UB953_DEFAULT_CLKOUT_RATE … #define UB953_REG_RESET_CTL … #define UB953_REG_RESET_CTL_DIGITAL_RESET_1 … #define UB953_REG_RESET_CTL_DIGITAL_RESET_0 … #define UB953_REG_GENERAL_CFG … #define UB953_REG_GENERAL_CFG_CONT_CLK … #define UB953_REG_GENERAL_CFG_CSI_LANE_SEL_SHIFT … #define UB953_REG_GENERAL_CFG_CSI_LANE_SEL_MASK … #define UB953_REG_GENERAL_CFG_CRC_TX_GEN_ENABLE … #define UB953_REG_GENERAL_CFG_I2C_STRAP_MODE … #define UB953_REG_MODE_SEL … #define UB953_REG_MODE_SEL_MODE_DONE … #define UB953_REG_MODE_SEL_MODE_OVERRIDE … #define UB953_REG_MODE_SEL_MODE_MASK … #define UB953_REG_CLKOUT_CTRL0 … #define UB953_REG_CLKOUT_CTRL1 … #define UB953_REG_SCL_HIGH_TIME … #define UB953_REG_SCL_LOW_TIME … #define UB953_REG_LOCAL_GPIO_DATA … #define UB953_REG_LOCAL_GPIO_DATA_GPIO_RMTEN(n) … #define UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(n) … #define UB953_REG_GPIO_INPUT_CTRL … #define UB953_REG_GPIO_INPUT_CTRL_OUT_EN(n) … #define UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(n) … #define UB953_REG_REV_MASK_ID … #define UB953_REG_GENERAL_STATUS … #define UB953_REG_GPIO_PIN_STS … #define UB953_REG_GPIO_PIN_STS_GPIO_STS(n) … #define UB953_REG_BIST_ERR_CNT … #define UB953_REG_CRC_ERR_CNT1 … #define UB953_REG_CRC_ERR_CNT2 … #define UB953_REG_CSI_ERR_CNT … #define UB953_REG_CSI_ERR_STATUS … #define UB953_REG_CSI_ERR_DLANE01 … #define UB953_REG_CSI_ERR_DLANE23 … #define UB953_REG_CSI_ERR_CLK_LANE … #define UB953_REG_CSI_PKT_HDR_VC_ID … #define UB953_REG_PKT_HDR_WC_LSB … #define UB953_REG_PKT_HDR_WC_MSB … #define UB953_REG_CSI_ECC … #define UB953_REG_IND_ACC_CTL … #define UB953_REG_IND_ACC_ADDR … #define UB953_REG_IND_ACC_DATA … #define UB953_REG_FPD3_RX_ID(n) … #define UB953_REG_FPD3_RX_ID_LEN … /* Indirect register blocks */ #define UB953_IND_TARGET_PAT_GEN … #define UB953_IND_TARGET_FPD3_TX … #define UB953_IND_TARGET_DIE_ID … #define UB953_IND_PGEN_CTL … #define UB953_IND_PGEN_CTL_PGEN_ENABLE … #define UB953_IND_PGEN_CFG … #define UB953_IND_PGEN_CSI_DI … #define UB953_IND_PGEN_LINE_SIZE1 … #define UB953_IND_PGEN_LINE_SIZE0 … #define UB953_IND_PGEN_BAR_SIZE1 … #define UB953_IND_PGEN_BAR_SIZE0 … #define UB953_IND_PGEN_ACT_LPF1 … #define UB953_IND_PGEN_ACT_LPF0 … #define UB953_IND_PGEN_TOT_LPF1 … #define UB953_IND_PGEN_TOT_LPF0 … #define UB953_IND_PGEN_LINE_PD1 … #define UB953_IND_PGEN_LINE_PD0 … #define UB953_IND_PGEN_VBP … #define UB953_IND_PGEN_VFP … #define UB953_IND_PGEN_COLOR(n) … /* Note: Only sync mode supported for now */ enum ub953_mode { … }; struct ub953_hw_data { … }; struct ub953_clkout_data { … }; struct ub953_data { … }; static inline struct ub953_data *sd_to_ub953(struct v4l2_subdev *sd) { … } /* * HW Access */ static int ub953_read(struct ub953_data *priv, u8 reg, u8 *val) { … } static int ub953_write(struct ub953_data *priv, u8 reg, u8 val) { … } static int ub953_select_ind_reg_block(struct ub953_data *priv, u8 block) { … } __maybe_unused static int ub953_read_ind(struct ub953_data *priv, u8 block, u8 reg, u8 *val) { … } __maybe_unused static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val) { … } /* * GPIO chip */ static int ub953_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) { … } static int ub953_gpio_direction_in(struct gpio_chip *gc, unsigned int offset) { … } static int ub953_gpio_direction_out(struct gpio_chip *gc, unsigned int offset, int value) { … } static int ub953_gpio_get(struct gpio_chip *gc, unsigned int offset) { … } static void ub953_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) { … } static int ub953_gpio_of_xlate(struct gpio_chip *gc, const struct of_phandle_args *gpiospec, u32 *flags) { … } static int ub953_gpiochip_probe(struct ub953_data *priv) { … } static void ub953_gpiochip_remove(struct ub953_data *priv) { … } /* * V4L2 */ static int _ub953_set_routing(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_krouting *routing) { … } static int ub953_set_routing(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, enum v4l2_subdev_format_whence which, struct v4l2_subdev_krouting *routing) { … } static int ub953_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd) { … } static int ub953_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { … } static int ub953_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state) { … } static int ub953_log_status(struct v4l2_subdev *sd) { … } static int ub953_enable_streams(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask) { … } static int ub953_disable_streams(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask) { … } static const struct v4l2_subdev_pad_ops ub953_pad_ops = …; static const struct v4l2_subdev_core_ops ub953_subdev_core_ops = …; static const struct v4l2_subdev_ops ub953_subdev_ops = …; static const struct v4l2_subdev_internal_ops ub953_internal_ops = …; static const struct media_entity_operations ub953_entity_ops = …; static int ub953_notify_bound(struct v4l2_async_notifier *notifier, struct v4l2_subdev *source_subdev, struct v4l2_async_connection *asd) { … } static const struct v4l2_async_notifier_operations ub953_notify_ops = …; static int ub953_v4l2_notifier_register(struct ub953_data *priv) { … } static void ub953_v4l2_notifier_unregister(struct ub953_data *priv) { … } /* * Probing */ static int ub953_i2c_master_init(struct ub953_data *priv) { … } static u64 ub953_get_fc_rate(struct ub953_data *priv) { … } static unsigned long ub953_calc_clkout_ub953(struct ub953_data *priv, unsigned long target, u64 fc, u8 *hs_div, u8 *m, u8 *n) { … } static unsigned long ub953_calc_clkout_ub971(struct ub953_data *priv, unsigned long target, u64 fc, u8 *m, u8 *n) { … } static void ub953_calc_clkout_params(struct ub953_data *priv, unsigned long target_rate, struct ub953_clkout_data *clkout_data) { … } static void ub953_write_clkout_regs(struct ub953_data *priv, const struct ub953_clkout_data *clkout_data) { … } static unsigned long ub953_clkout_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { … } static long ub953_clkout_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *parent_rate) { … } static int ub953_clkout_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { … } static const struct clk_ops ub953_clkout_ops = …; static int ub953_register_clkout(struct ub953_data *priv) { … } static int ub953_add_i2c_adapter(struct ub953_data *priv) { … } static const struct regmap_config ub953_regmap_config = …; static int ub953_parse_dt(struct ub953_data *priv) { … } static int ub953_hw_init(struct ub953_data *priv) { … } static int ub953_subdev_init(struct ub953_data *priv) { … } static void ub953_subdev_uninit(struct ub953_data *priv) { … } static int ub953_probe(struct i2c_client *client) { … } static void ub953_remove(struct i2c_client *client) { … } static const struct ub953_hw_data ds90ub953_hw = …; static const struct ub953_hw_data ds90ub971_hw = …; static const struct i2c_device_id ub953_id[] = …; MODULE_DEVICE_TABLE(i2c, ub953_id); static const struct of_device_id ub953_dt_ids[] = …; MODULE_DEVICE_TABLE(of, ub953_dt_ids); static struct i2c_driver ds90ub953_driver = …; module_i2c_driver(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_IMPORT_NS(…);
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