Melexis ToF 7502x sensors has a CSI-2 output. It supports 2 and 4 lanes, and mipi speeds are 300, 600, 704, 800, 904, 960Mbs. Supported format is RAW12. Sensor 75026 is QVGA, while 75027 is VGA sensor. The driver supports: - Digital binning and cropping - Horizontal and vertical flip - phase shifts(up to 8) - frequency modulation - time integration - internal temperature - different trigger sources Signed-off-by: Volodymyr Kharuk <vkh@xxxxxxxxxxx> Signed-off-by: Andrii Kyselov <ays@xxxxxxxxxxx> --- MAINTAINERS | 1 + drivers/media/i2c/Kconfig | 13 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/mlx7502x.c | 2020 ++++++++++++++++++++++++++++++++++ 4 files changed, 2035 insertions(+) create mode 100644 drivers/media/i2c/mlx7502x.c diff --git a/MAINTAINERS b/MAINTAINERS index b00a726bb3db..6dc74dab45aa 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12679,6 +12679,7 @@ L: linux-media@xxxxxxxxxxxxxxx S: Supported W: http://www.melexis.com F: Documentation/devicetree/bindings/media/i2c/melexis,mlx7502x.yaml +F: drivers/media/i2c/mlx7502x.c F: include/uapi/linux/mlx7502x.h MELFAS MIP4 TOUCHSCREEN DRIVER diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 2b20aa6c37b1..126f6bd458b7 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -216,6 +216,19 @@ config VIDEO_IMX412 config VIDEO_MAX9271_LIB tristate +config VIDEO_MLX7502X + tristate "Melexis ToF 75026 and 75027 sensors support" + depends on I2C && VIDEO_DEV + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + This is a V4L2 sensor driver for the Melexis 75026 and 75027 + ToF sensors. + + To compile this driver as a module, choose M here: the + module will be called mlx7502x. + config VIDEO_MT9M001 tristate "mt9m001 support" depends on I2C && VIDEO_DEV diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 3e1696963e7f..57c30859e537 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -57,6 +57,7 @@ obj-$(CONFIG_VIDEO_M5MOLS) += m5mols/ obj-$(CONFIG_VIDEO_MAX9271_LIB) += max9271.o obj-$(CONFIG_VIDEO_MAX9286) += max9286.o obj-$(CONFIG_VIDEO_ML86V7667) += ml86v7667.o +obj-$(CONFIG_VIDEO_MLX7502X) += mlx7502x.o obj-$(CONFIG_VIDEO_MSP3400) += msp3400.o obj-$(CONFIG_VIDEO_MT9M001) += mt9m001.o obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o diff --git a/drivers/media/i2c/mlx7502x.c b/drivers/media/i2c/mlx7502x.c new file mode 100644 index 000000000000..93fb6b555a4e --- /dev/null +++ b/drivers/media/i2c/mlx7502x.c @@ -0,0 +1,2020 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * A V4L2 driver for Melexis 7502x ToF cameras. + * + * Copyright (C) 2022 Melexis N.V. + * + */ + +#include <asm/unaligned.h> +#include <linux/bitfield.h> +#include <linux/bsearch.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/i2c.h> +#include <linux/mlx7502x.h> +#include <linux/module.h> +#include <linux/of_graph.h> +#include <linux/pm_runtime.h> +#include <linux/units.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-fwnode.h> +#include <media/v4l2-event.h> +#include <media/v4l2-image-sizes.h> + +#define MLX7502X_SENSOR_ID_REG 0x0002 +#define MLX7502X_PARAM_HOLD_REG 0x0102 +#define MLX7502X_HMAX_REG 0x0800 +#define MLX7502X_COLUMN_START_REG 0x0804 +#define MLX7502X_COLUMN_LEN_REG 0x0806 +#define MLX7502X_ROW_START_REG 0x0808 +#define MLX7502X_ROW_END_REG 0x080a +#define MLX7502X_VFLIP_REG 0x080c +#define MLX7502X_HFLIP_REG 0x080d +#define MLX7502X_OUTPUT_MODE_REG 0x0828 +#define MLX7502X_STREAM_EN_REG 0x1001 +#define MLX7502X_DATA_LANE_CONFIG_REG 0x1010 +#define MLX7502X_FMOD_REG 0x1048 +#define MLX7502X_PLL_RES_REG 0x104b +#define MLX7502X_TEMPERATURE_REG 0x1403 +#define MLX7502X_BINNING_REG 0x14a5 +#define MLX7502X_CONTINUOUS_REG 0x1c40 +#define MLX7502X_SW_TRIGGER_REG 0x2100 +#define MLX7502X_FRAME_TIME_REG 0x2108 +#define MLX7502X_TINT0_REG 0x2120 +#define MLX7502X_PX_PHASE_SHIFT_REG 0x21b4 +#define MLX7502X_DIVSELPRE_REG 0x21be +#define MLX7502X_DIVSEL_REG 0x21bf +#define MLX7502X_PHASE_COUNT_REG 0x21e8 +#define MLX7502X_PLLSETUP_REG 0x4010 +#define MLX7502X_PRETIME_REG 0x4015 +#define MLX7502X_RANDNM0_REG 0x5265 + +#define MLX7502X_NIBLE_LOW_MASK GENMASK(3, 0) +#define MLX7502X_NIBLE_HIGH_MASK GENMASK(7, 4) + +#define MLX7502X_PHASE_MAX_NUM 8 + +#define MLX7502X_CLK_RATE_MHZ 120 +#define MLX7502X_XCLK_RATE (8 * HZ_PER_MHZ) + +#define MLX7502X_RESET_DELAY_MS 100 +#define MLX7502X_TRIGGER_DELAY_US 100 +#define MLX7502X_STREAMING_DELAY_US 1500 + +#define MLX7502X_SW_TRIGGER_DEFAULT 0x0000 +#define MLX7502X_SW_TRIGGER_TRIG 0x0001 +#define MLX7502X_SW_TRIGGER_CONT 0x0008 + +#define MLX7502X_LINK_FREQ_REG_N 11 +#define MLX7502X_LINK_FREQ_N 6 +#define MLX7502X_LANE_N 2 +#define MLX7502X_OUTPUT_MODE_N 2 + +#define MLX7502X_PLLSETUP_US 503 +#define MLX7502X_PLLSETUP_TICKS 8 +#define MLX7502X_PRETIME_US 50 +#define MLX7502X_FRAME_ADD_TICKS 13 + +#define MLX7502X_DEFAULT_FRAME_RATE 25 + +#define MLX7502X_ROW_START(top) ((top) / 2) +#define MLX7502X_ROW_END(top, height) ((((top) + (height)) / 2) + 1) + +#define MLX7502X_LEFT_STEP 1 +#define MLX7502X_LEFT_MIN 0 + +#define MLX7502X_TOP_STEP 2 +#define MLX7502X_TOP_MIN 0 + +#define MLX7502X_PLL_RES_THR 113 + +#define MLX7502X_75026_ID 0x10 + +static const char * const mlx7502x_supply_names[] = { + "vdda", /* Analog (2.7V) supply */ + "vddif", /* I/O (1.8V) supply */ + "vddd", /* Digital core (1.2V) supply */ + "vdmix", /* MIX driver (1.2V) supply */ +}; + +#define MLX7502X_NUM_SUPPLIES ARRAY_SIZE(mlx7502x_supply_names) + +/* the source to generate next frame */ +enum mlx7502x_trigger_mode { + MLX7502X_SOFTWARE = 0, /* internal sw trigger */ + MLX7502X_HARDWARE, /* external gpio trigger */ + MLX7502X_CONTINUOUS, /* self triggering */ +}; + +/* output data of the sensor */ +enum mlx7502x_output_mode { + MLX7502X_AMB = 0, /* rawA minus rawB mode */ + MLX7502X_APB, /* rawA plus rawB mode */ + MLX7502X_RAW_A, /* only rawA mode */ + MLX7502X_RAW_B, /* only rawB mode */ + MLX7502X_RAW_ANB, /* both rawA and rawB, output frame size doubles */ +}; + +struct mlx7502x_regval_list { + u16 addr; + u8 data; +}; + +struct mlx7502x_link_freq_list { + s64 link_freq[MLX7502X_LINK_FREQ_N]; + u16 addr[MLX7502X_LINK_FREQ_REG_N]; + u8 data[MLX7502X_LANE_N][MLX7502X_LINK_FREQ_N][MLX7502X_LINK_FREQ_REG_N]; + u16 hmax[MLX7502X_LANE_N][MLX7502X_LINK_FREQ_N][MLX7502X_OUTPUT_MODE_N]; +}; + +struct mlx7502x_binning_mode { + u8 reg_value; + u8 ratio; + u8 width_step; + u8 height_step; + u8 width_min; + u8 height_min; +}; + +/* configuration of divider for specific fmod */ +struct mlx7502x_fmod_list { + u8 fmod; + u8 divselpre; + u8 divsel; +}; + +struct mlx7502x_sensor_desc { + const struct mlx7502x_regval_list *init_cfg; + u32 init_cfg_size; + const struct mlx7502x_link_freq_list *link_freq_cfg; + u32 width; + u32 height; +}; + +struct mlx7502x { + struct v4l2_subdev sd; + struct media_pad pad; + struct v4l2_fwnode_endpoint ep; + struct device *dev; + + /* controls */ + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *tint; + struct v4l2_ctrl *trigger_mode; + struct v4l2_ctrl *phase_number; + struct v4l2_ctrl *output_mode; + + struct clk *xclk; + struct regulator_bulk_data supplies[MLX7502X_NUM_SUPPLIES]; + + /* pins */ + struct gpio_desc *reset; + struct gpio_desc *leden; + struct gpio_desc *trig; + + const struct mlx7502x_sensor_desc *cur_desc; + const struct mlx7502x_binning_mode *binning_mode; + int (*trigger)(struct mlx7502x *sensor); + int streaming; + u16 hmax; /* internal sensor frame size in ticks */ + struct v4l2_fract frame_interval; + struct v4l2_rect crop; + struct v4l2_rect compose; + struct mutex lock; /* mutex lock for serialized operations */ +}; + +static const struct mlx7502x_regval_list mlx7502x_common_init_cfg[] = { + { 0x1006, 0x08 }, { 0x1007, 0x00 }, { 0x1040, 0x00 }, { 0x1041, 0x96 }, + { 0x1042, 0x01 }, { 0x1043, 0x00 }, { 0x1044, 0x00 }, { 0x1046, 0x01 }, + { 0x104a, 0x01 }, { 0x1000, 0x00 }, { 0x10d3, 0x10 }, { 0x1448, 0x06 }, + { 0x1449, 0x40 }, { 0x144a, 0x06 }, { 0x144b, 0x40 }, { 0x144c, 0x06 }, + { 0x144d, 0x40 }, { 0x144e, 0x06 }, { 0x144f, 0x40 }, { 0x1450, 0x06 }, + { 0x1451, 0x40 }, { 0x1452, 0x06 }, { 0x1453, 0x40 }, { 0x1454, 0x06 }, + { 0x1455, 0x40 }, { 0x1456, 0x06 }, { 0x1457, 0x40 }, { 0x2203, 0x1e }, + { 0x2c08, 0x01 }, { 0x3c2b, 0x1b }, { 0x400e, 0x01 }, { 0x400f, 0x81 }, + { 0x40d1, 0x00 }, { 0x40d2, 0x00 }, { 0x40d3, 0x00 }, { 0x40db, 0x3f }, + { 0x40de, 0x40 }, { 0x40df, 0x01 }, { 0x4134, 0x04 }, { 0x4135, 0x04 }, + { 0x4136, 0x04 }, { 0x4137, 0x04 }, { 0x4138, 0x04 }, { 0x4139, 0x04 }, + { 0x413a, 0x04 }, { 0x413b, 0x04 }, { 0x413c, 0x04 }, { 0x4146, 0x01 }, + { 0x4147, 0x01 }, { 0x4148, 0x01 }, { 0x4149, 0x01 }, { 0x414a, 0x01 }, + { 0x414b, 0x01 }, { 0x414c, 0x01 }, { 0x414d, 0x01 }, { 0x4158, 0x01 }, + { 0x4159, 0x01 }, { 0x415a, 0x01 }, { 0x415b, 0x01 }, { 0x415c, 0x01 }, + { 0x415d, 0x01 }, { 0x415e, 0x01 }, { 0x415f, 0x01 }, { 0x4590, 0x00 }, + { 0x4591, 0x2e }, { 0x4684, 0x00 }, { 0x4685, 0xa0 }, { 0x4687, 0xa1 }, + { 0x471e, 0x07 }, { 0x471f, 0xc9 }, { 0x473a, 0x07 }, { 0x473b, 0xc9 }, + { 0x4770, 0x00 }, { 0x4771, 0x00 }, { 0x4772, 0x1f }, { 0x4773, 0xff }, + { 0x4778, 0x06 }, { 0x4779, 0xa4 }, { 0x477a, 0x07 }, { 0x477b, 0xae }, + { 0x4788, 0x06 }, { 0x4789, 0xa4 }, { 0x478c, 0x1f }, { 0x478d, 0xff }, + { 0x478e, 0x00 }, { 0x478f, 0x00 }, { 0x4792, 0x00 }, { 0x4793, 0x00 }, + { 0x4796, 0x00 }, { 0x4797, 0x00 }, { 0x479a, 0x00 }, { 0x479b, 0x00 }, + { 0x479c, 0x1f }, { 0x479d, 0xff }, { 0x479e, 0x00 }, { 0x479f, 0x00 }, + { 0x47a2, 0x00 }, { 0x47a3, 0x00 }, { 0x47a6, 0x00 }, { 0x47a7, 0x00 }, + { 0x47aa, 0x00 }, { 0x47ab, 0x00 }, { 0x47ac, 0x1f }, { 0x47ad, 0xff }, + { 0x47ae, 0x00 }, { 0x47af, 0x00 }, { 0x47b2, 0x00 }, { 0x47b3, 0x00 }, + { 0x47b6, 0x00 }, { 0x47b7, 0x00 }, { 0x47ba, 0x00 }, { 0x47bb, 0x00 }, + { 0x47bc, 0x1f }, { 0x47bd, 0xff }, { 0x47be, 0x00 }, { 0x47bf, 0x00 }, + { 0x47c2, 0x00 }, { 0x47c3, 0x00 }, { 0x47c6, 0x00 }, { 0x47c7, 0x00 }, + { 0x47ca, 0x00 }, { 0x47cb, 0x00 }, { 0x4834, 0x00 }, { 0x4835, 0xa0 }, + { 0x4837, 0xa1 }, { 0x4878, 0x00 }, { 0x4879, 0xa0 }, { 0x487b, 0xa1 }, + { 0x48bc, 0x00 }, { 0x48bd, 0xa0 }, { 0x48bf, 0xa1 }, { 0x49ff, 0x78 }, + { 0x4baf, 0x1a }, { 0x4bc7, 0x1a }, { 0x4d2a, 0x07 }, { 0x4d80, 0x06 }, + { 0x4d81, 0xa4 }, { 0x4d82, 0x07 }, { 0x4e39, 0x07 }, { 0x4e7b, 0x64 }, + { 0x4e8e, 0x0e }, { 0x4e9c, 0x01 }, { 0x4ea0, 0x01 }, { 0x4ea1, 0x03 }, + { 0x4ea5, 0x00 }, { 0x4ea7, 0x00 }, { 0x4f05, 0x04 }, { 0x4f0d, 0x04 }, + { 0x4f15, 0x04 }, { 0x4f19, 0x01 }, { 0x4f20, 0x01 }, { 0x4f66, 0x0f }, + { 0x500f, 0x01 }, { 0x5225, 0x2f }, { 0x5227, 0x1e }, { 0x5231, 0x19 }, + { 0x5245, 0x07 }, { 0x5252, 0x07 }, { 0x5253, 0x08 }, { 0x5254, 0x07 }, + { 0x5255, 0xb4 }, { 0x5272, 0x04 }, { 0x5273, 0x2e }, { 0x5282, 0x04 }, + { 0x5283, 0x2e }, { 0x5286, 0x00 }, { 0x5287, 0x5d }, { 0x1433, 0x00 }, + { 0x3c18, 0x00 }, { 0x100e, 0x00 }, { 0x100f, 0x00 }, { 0x10c2, 0x00 }, + { 0x10d0, 0x0a }, { 0x10d4, 0x00 }, { 0x10d5, 0xc5 }, +}; + +static const struct mlx7502x_regval_list mlx7502x_75027_init_cfg[] = { + { 0x477d, 0xd6 }, { 0x4954, 0x00 }, { 0x4955, 0xa0 }, { 0x4957, 0xa1 }, + { 0x4984, 0x00 }, { 0x4985, 0xa0 }, { 0x4987, 0xa1 }, { 0x49b9, 0x78 }, + { 0x49c3, 0x3c }, { 0x49c9, 0x76 }, { 0x49d3, 0x3f }, { 0x49dc, 0x00 }, + { 0x49dd, 0xa0 }, { 0x49df, 0xa1 }, { 0x49ef, 0x78 }, { 0x49f9, 0x3c }, + { 0x4a05, 0x3c }, { 0x4a0b, 0x76 }, { 0x4a11, 0x3f }, { 0x4a1a, 0x00 }, + { 0x4a1b, 0xa0 }, { 0x4a1d, 0xa1 }, { 0x4a1f, 0x78 }, { 0x4a29, 0x3c }, + { 0x4a4a, 0x00 }, { 0x4a4b, 0xa0 }, { 0x4a4d, 0xa1 }, { 0x4a7a, 0x00 }, + { 0x4a7b, 0xa0 }, { 0x4a7d, 0xa1 }, { 0x4aee, 0x00 }, { 0x4aef, 0xa0 }, + { 0x4af1, 0xa1 }, { 0x4b2e, 0x00 }, { 0x4b2f, 0xa0 }, { 0x4b31, 0xa1 }, + { 0x4b5a, 0x00 }, { 0x4b5b, 0xa0 }, { 0x4b5d, 0xa1 }, { 0x4b86, 0x00 }, + { 0x4b87, 0xa0 }, { 0x4b89, 0xa1 }, { 0x4b9f, 0x1a }, { 0x4bb7, 0x1a }, + { 0x4bcf, 0x1a }, { 0x4bee, 0x00 }, { 0x4bef, 0xa0 }, { 0x4bf1, 0xa1 }, + { 0x4bf7, 0x1a }, { 0x4c01, 0x1a }, { 0x4c58, 0x00 }, { 0x4c59, 0xa0 }, + { 0x4c5b, 0xa1 }, { 0x4c6e, 0x00 }, { 0x4c6f, 0xa0 }, { 0x4c71, 0xa1 }, + { 0x4c7a, 0x01 }, { 0x4c7b, 0x35 }, { 0x4cf2, 0x07 }, { 0x4cf3, 0xc9 }, + { 0x4cf8, 0x06 }, { 0x4cf9, 0x9b }, { 0x4cfa, 0x07 }, { 0x4cfb, 0xae }, + { 0x4cfe, 0x07 }, { 0x4cff, 0xc9 }, { 0x4d04, 0x06 }, { 0x4d05, 0x98 }, + { 0x4d06, 0x07 }, { 0x4d07, 0xb1 }, { 0x4d18, 0x06 }, { 0x4d19, 0xa4 }, + { 0x4d1a, 0x07 }, { 0x4d1b, 0x49 }, { 0x4d1e, 0x07 }, { 0x4d1f, 0xc9 }, + { 0x4d2b, 0xc9 }, { 0x4d4a, 0x07 }, { 0x4d4b, 0xc9 }, { 0x4d50, 0x06 }, + { 0x4d51, 0x9b }, { 0x4d52, 0x07 }, { 0x4d53, 0xae }, { 0x4d56, 0x07 }, + { 0x4d57, 0xc9 }, { 0x4d5c, 0x06 }, { 0x4d5d, 0x98 }, { 0x4d5e, 0x07 }, + { 0x4d5f, 0xb1 }, { 0x4d70, 0x06 }, { 0x4d71, 0xa4 }, { 0x4d72, 0x07 }, + { 0x4d73, 0x49 }, { 0x4d78, 0x06 }, { 0x4d79, 0xa4 }, { 0x4d7a, 0x07 }, + { 0x4d7b, 0xae }, { 0x4d7c, 0x1f }, { 0x4d7d, 0xff }, { 0x4d7e, 0x1f }, + { 0x4d7f, 0xff }, { 0x4d83, 0xae }, { 0x4d84, 0x1f }, { 0x4d85, 0xff }, + { 0x4d86, 0x1f }, { 0x4d87, 0xff }, +}; + +static const struct mlx7502x_link_freq_list mlx75027_link_freq_cfg = { + .link_freq = { 300000000, 600000000, 704000000, 800000000, 904000000, 960000000 }, + .addr = { + 0x100c, 0x100d, 0x1016, 0x1017, 0x1045, 0x1047, + 0x1060, 0x1071, 0x10c3, 0x10c4, 0x10c5 + }, + .data = { + { /* lane 2 */ + { 0x02, 0x58, 0x09, 0x99, 0x4b, 0x02, + 0x01, 0x0c, 0x1c, 0x01, 0x3a }, /* 300MBps */ + { 0x04, 0xb0, 0x04, 0xcc, 0x4b, 0x02, + 0x00, 0x06, 0x0f, 0x00, 0x9d }, /* 600MBps */ + { 0x05, 0x80, 0x04, 0x17, 0x58, 0x02, + 0x00, 0x06, 0x0d, 0x00, 0x86 }, /* 704MBps */ + { 0x06, 0x40, 0x03, 0x99, 0x64, 0x02, + 0x00, 0x06, 0x0b, 0x00, 0x75 }, /* 800MBps */ + { 0x07, 0x10, 0x03, 0x2f, 0x71, 0x00, + 0x00, 0x06, 0x0a, 0x00, 0x68 }, /* 904MBps */ + { 0x07, 0x80, 0x03, 0x00, 0x78, 0x02, + 0x00, 0x06, 0x0a, 0x00, 0x62 }, /* 960MBps */ + }, { /* lane 4 */ + { 0x04, 0xb0, 0x09, 0x99, 0x4b, 0x02, + 0x01, 0x0c, 0x1c, 0x01, 0x3a }, /* 300MBps */ + { 0x09, 0x60, 0x04, 0xcc, 0x4b, 0x02, + 0x00, 0x06, 0x0f, 0x00, 0x9d }, /* 600MBps */ + { 0x0b, 0x00, 0x04, 0x17, 0x58, 0x02, + 0x00, 0x06, 0x0d, 0x00, 0x86 }, /* 704MBps */ + { 0x0c, 0x80, 0x03, 0x99, 0x64, 0x02, + 0x00, 0x06, 0x0b, 0x00, 0x75 }, /* 800MBps */ + { 0x0e, 0x20, 0x03, 0x2f, 0x71, 0x00, + 0x00, 0x06, 0x0a, 0x00, 0x68 }, /* 904MBps */ + { 0x0f, 0x00, 0x03, 0x00, 0x78, 0x00, + 0x00, 0x06, 0x0a, 0x00, 0x62 }, /* 960MBps */ + }, + }, + .hmax = { + { /* lane 2 */ + { 0x0e78, 0x1a80 }, /* 300MBps */ + { 0x0750, 0x0d54 }, /* 600MBps */ + { 0x0640, 0x0b60 }, /* 704MBps */ + { 0x0584, 0x0a06 }, /* 800MBps */ + { 0x04e8, 0x08e6 }, /* 904MBps */ + { 0x049e, 0x0860 }, /* 960MBps */ + }, + { /* lane 4 */ + { 0x0860, 0x0e60 }, /* 300MBps */ + { 0x0444, 0x0744 }, /* 600MBps */ + { 0x03a8, 0x0636 }, /* 704MBps */ + { 0x033a, 0x057a }, /* 800MBps */ + { 0x02e2, 0x0514 }, /* 904MBps */ + { 0x02b6, 0x0514 }, /* 960MBps */ + }, + } +}; + +/* VGA sensor */ +static const struct mlx7502x_sensor_desc mlx75027 = { + .init_cfg = mlx7502x_75027_init_cfg, + .init_cfg_size = ARRAY_SIZE(mlx7502x_75027_init_cfg), + .link_freq_cfg = &mlx75027_link_freq_cfg, + .width = VGA_WIDTH, + .height = VGA_HEIGHT, +}; + +static const struct mlx7502x_regval_list mlx7502x_75026_init_cfg[] = { + { 0x477c, 0x0a }, { 0x477d, 0xd4 }, { 0x4964, 0x00 }, { 0x4965, 0xa0 }, + { 0x4967, 0xa1 }, { 0x4994, 0x00 }, { 0x4995, 0xa0 }, { 0x4997, 0xa1 }, + { 0x49c9, 0x78 }, { 0x49d3, 0x3c }, { 0x49d9, 0x76 }, { 0x49e3, 0x3f }, + { 0x49ec, 0x00 }, { 0x49ed, 0xa0 }, { 0x49ef, 0xa1 }, { 0x4a09, 0x3c }, + { 0x4a0f, 0x78 }, { 0x4a15, 0x3c }, { 0x4a1b, 0x76 }, { 0x4a21, 0x3f }, + { 0x4a2a, 0x00 }, { 0x4a2b, 0xa0 }, { 0x4a2d, 0xa1 }, { 0x4a2f, 0x78 }, + { 0x4a39, 0x3c }, { 0x4a5a, 0x00 }, { 0x4a5b, 0xa0 }, { 0x4a5d, 0xa1 }, + { 0x4a8a, 0x00 }, { 0x4a8b, 0xa0 }, { 0x4a8d, 0xa1 }, { 0x4afe, 0x00 }, + { 0x4aff, 0xa0 }, { 0x4b01, 0xa1 }, { 0x4b3e, 0x00 }, { 0x4b3f, 0xa0 }, + { 0x4b41, 0xa1 }, { 0x4b6a, 0x00 }, { 0x4b6b, 0xa0 }, { 0x4b6d, 0xa1 }, + { 0x4b96, 0x00 }, { 0x4b97, 0xa0 }, { 0x4b99, 0xa1 }, { 0x4bbf, 0x1a }, + { 0x4bd7, 0x1a }, { 0x4bdf, 0x1a }, { 0x4bfe, 0x00 }, { 0x4bff, 0xa0 }, + { 0x4c01, 0xa1 }, { 0x4c07, 0x1a }, { 0x4c11, 0x1a }, { 0x4c68, 0x00 }, + { 0x4c69, 0xa0 }, { 0x4c6b, 0xa1 }, { 0x4c7e, 0x00 }, { 0x4c7f, 0xa0 }, + { 0x4c81, 0xa1 }, { 0x4c8a, 0x01 }, { 0x4c8b, 0x35 }, { 0x4d02, 0x07 }, + { 0x4d03, 0xc9 }, { 0x4d08, 0x06 }, { 0x4d09, 0x9b }, { 0x4d0a, 0x07 }, + { 0x4d0b, 0xae }, { 0x4d0e, 0x07 }, { 0x4d0f, 0xc9 }, { 0x4d14, 0x06 }, + { 0x4d15, 0x98 }, { 0x4d16, 0x07 }, { 0x4d17, 0xb1 }, { 0x4d28, 0x06 }, + { 0x4d29, 0xa4 }, { 0x4d2b, 0xa9 }, { 0x4d2e, 0x07 }, { 0x4d2f, 0xc9 }, + { 0x4d3a, 0x07 }, { 0x4d3b, 0xc9 }, { 0x4d5a, 0x07 }, { 0x4d5b, 0xc9 }, + { 0x4d60, 0x06 }, { 0x4d61, 0x9b }, { 0x4d62, 0x07 }, { 0x4d63, 0xae }, + { 0x4d66, 0x07 }, { 0x4d67, 0xc9 }, { 0x4d6c, 0x06 }, { 0x4d6d, 0x98 }, + { 0x4d6e, 0x07 }, { 0x4d6f, 0xb1 }, { 0x4d83, 0xa9 }, { 0x4d88, 0x06 }, + { 0x4d89, 0xa4 }, { 0x4d8a, 0x07 }, { 0x4d8b, 0xae }, { 0x4d8c, 0x1f }, + { 0x4d8d, 0xff }, { 0x4d8e, 0x1f }, { 0x4d8f, 0xff }, { 0x4d90, 0x06 }, + { 0x4d91, 0xa4 }, { 0x4d92, 0x07 }, { 0x4d93, 0xae }, { 0x4d94, 0x1f }, + { 0x4d95, 0xff }, { 0x4d96, 0x1f }, { 0x4d97, 0xff }, +}; + +static const struct mlx7502x_link_freq_list mlx75026_link_freq_cfg = { + .link_freq = { 300000000, 600000000, 704000000, 800000000, 904000000, 960000000 }, + .addr = { + 0x100c, 0x100d, 0x1016, 0x1017, 0x1045, 0x1047, + 0x1060, 0x1071, 0x10c3, 0x10c4, 0x10c5 + }, + .data = { + { /* lane 2 */ + { 0x02, 0x58, 0x09, 0x99, 0x4b, 0x02, + 0x01, 0x0c, 0x1c, 0x01, 0x3a }, /* 300MBps */ + { 0x04, 0xb0, 0x04, 0xcc, 0x4b, 0x02, + 0x00, 0x06, 0x0f, 0x00, 0x9d }, /* 600MBps */ + { 0x05, 0x80, 0x04, 0x17, 0x58, 0x02, + 0x00, 0x06, 0x0d, 0x00, 0x86 }, /* 704MBps */ + { 0x06, 0x40, 0x03, 0x99, 0x64, 0x02, + 0x00, 0x06, 0x0b, 0x00, 0x75 }, /* 800MBps */ + { 0x07, 0x10, 0x03, 0x2f, 0x71, 0x00, + 0x00, 0x06, 0x0a, 0x00, 0x68 }, /* 904MBps */ + { 0x07, 0x80, 0x03, 0x00, 0x78, 0x02, + 0x00, 0x06, 0x0a, 0x00, 0x62 }, /* 960MBps */ + }, { /* lane 4 */ + { 0x04, 0xb0, 0x09, 0x99, 0x4b, 0x02, + 0x01, 0x0c, 0x1c, 0x01, 0x3a }, /* 300MBps */ + { 0x09, 0x60, 0x04, 0xcc, 0x4b, 0x02, + 0x00, 0x06, 0x0f, 0x00, 0x9d }, /* 600MBps */ + { 0x0b, 0x00, 0x04, 0x17, 0x58, 0x02, + 0x00, 0x06, 0x0d, 0x00, 0x86 }, /* 704MBps */ + { 0x0c, 0x80, 0x03, 0x99, 0x64, 0x02, + 0x00, 0x06, 0x0b, 0x00, 0x75 }, /* 800MBps */ + { 0x0e, 0x20, 0x03, 0x2f, 0x71, 0x00, + 0x00, 0x06, 0x0a, 0x00, 0x68 }, /* 904MBps */ + { 0x0f, 0x00, 0x03, 0x00, 0x78, 0x00, + 0x00, 0x06, 0x0a, 0x00, 0x62 }, /* 960MBps */ + }, + }, + .hmax = { + { /* lane 2 */ + { 0x0878, 0x0e80 }, /* 300MBps */ + { 0x0450, 0x0754 }, /* 600MBps */ + { 0x03b2, 0x0644 }, /* 704MBps */ + { 0x0344, 0x0586 }, /* 800MBps */ + { 0x02ea, 0x0514 }, /* 904MBps */ + { 0x02be, 0x0514 }, /* 960MBps */ + }, { /* lane 4 */ + { 0x0560, 0x0860 }, /* 300MBps */ + { 0x02c4, 0x0444 }, /* 600MBps */ + { 0x02b6, 0x03a8 }, /* 704MBps */ + { 0x02b6, 0x033a }, /* 800MBps */ + { 0x02b6, 0x02e2 }, /* 904MBps */ + { 0x02b6, 0x02b6 }, /* 960MBps */ + }, + } +}; + +/* QVGA sensor */ +static const struct mlx7502x_sensor_desc mlx75026 = { + .init_cfg = mlx7502x_75026_init_cfg, + .init_cfg_size = ARRAY_SIZE(mlx7502x_75026_init_cfg), + .link_freq_cfg = &mlx75026_link_freq_cfg, + .width = QVGA_WIDTH, + .height = QVGA_HEIGHT, +}; + +static const struct mlx7502x_binning_mode binning_mode[] = { + { .reg_value = 0, .ratio = 1, .width_step = 4, .height_step = 2, + .width_min = 8, .height_min = 2 }, + { .reg_value = 1, .ratio = 2, .width_step = 8, .height_step = 2, + .width_min = 16, .height_min = 2 }, + { .reg_value = 2, .ratio = 4, .width_step = 16, .height_step = 4, + .width_min = 32, .height_min = 4 }, + { .reg_value = 3, .ratio = 8, .width_step = 32, .height_step = 8, + .width_min = 64, .height_min = 8 }, +}; + +static const struct mlx7502x_fmod_list mlx7502x_fmod_cfg[] = { + { .fmod = 100, .divselpre = 0, .divsel = 0, }, + { .fmod = 75, .divselpre = 0, .divsel = 0, }, + { .fmod = 74, .divselpre = 1, .divsel = 0, }, + { .fmod = 51, .divselpre = 1, .divsel = 0, }, + { .fmod = 50, .divselpre = 0, .divsel = 1, }, + { .fmod = 38, .divselpre = 0, .divsel = 1, }, + { .fmod = 37, .divselpre = 1, .divsel = 1, }, + { .fmod = 21, .divselpre = 1, .divsel = 1, }, + { .fmod = 20, .divselpre = 0, .divsel = 2, }, + { .fmod = 19, .divselpre = 0, .divsel = 2, }, + { .fmod = 18, .divselpre = 1, .divsel = 2, }, + { .fmod = 10, .divselpre = 1, .divsel = 2, }, + { .fmod = 9, .divselpre = 2, .divsel = 2, }, + { .fmod = 5, .divselpre = 2, .divsel = 2, }, + { .fmod = 4, .divselpre = 3, .divsel = 2, }, +}; + +static const struct mlx7502x_regval_list mlx7502x_hw_trigger_cfg[] = { + { 0x2020, 0x00 }, { 0x2100, 0x00 }, { 0x2f05, 0x07 }, + { 0x2f06, 0x00 }, { 0x2f07, 0x00 }, { 0x3071, 0x03 }, +}; + +static const struct mlx7502x_regval_list mlx7502x_sw_trigger_cfg[] = { + { 0x2020, 0x01 }, { 0x2f05, 0x01 }, { 0x2f06, 0x09 }, + { 0x2f07, 0x7a }, { 0x3071, 0x00 }, +}; + +static const char * const mlx7502x_ctrl_trigger_mode[] = { + [MLX7502X_SOFTWARE] = "Software", + [MLX7502X_HARDWARE] = "Hardware", + [MLX7502X_CONTINUOUS] = "Continuous", +}; + +static const char * const mlx7502x_ctrl_output[] = { + [MLX7502X_AMB] = "A minus B", + [MLX7502X_APB] = "A plus B", + [MLX7502X_RAW_A] = "Raw A", + [MLX7502X_RAW_B] = "Raw B", + [MLX7502X_RAW_ANB] = "Raw A and Raw B", +}; + +static const u16 mlx7502x_ctrl_phase_sequence[] = { + 0, 180, 90, 270, 0, 0, 0, 0 +}; + +static const struct mlx7502x_regval_list mlx7502x_detect_cfg[] = { + { 0x1006, 0x08 }, { 0x1045, 0x78 }, { 0x1049, 0x50 }, { 0x1071, 0x06 } +}; + +static inline struct mlx7502x *to_mlx7502x(struct v4l2_subdev *sd) +{ + return container_of(sd, struct mlx7502x, sd); +} + +static int mlx7502x_read(struct v4l2_subdev *sd, u16 reg, u8 *val, int val_size) +{ + int ret; + unsigned char data_w[2]; + struct i2c_client *client = v4l2_get_subdevdata(sd); + + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = data_w, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = val_size, + .buf = val, + } + }; + + /* write reg address into first msg */ + put_unaligned_be16(reg, data_w); + + /* Using transfer allows skip STOP between messages + * so we have repeated Start here + */ + ret = i2c_transfer(client->adapter, msg, 2); + + return ret != 2 ? -EIO : 0; +} + +static int mlx7502x_write(struct v4l2_subdev *sd, u8 *data, u32 data_size) +{ + int ret; + struct i2c_client *client = v4l2_get_subdevdata(sd); + + dev_dbg(&client->dev, "%*ph\n", data_size, data); + + ret = i2c_master_send(client, data, data_size); + if (ret < 0) { + dev_dbg(&client->dev, "%s: i2c write error, reg: 0x%x%x\n", + __func__, data[0], data[1]); + + return ret; + } + + return ret != data_size ? -EIO : 0; +} + +static int mlx7502x_write8(struct v4l2_subdev *sd, u16 reg, u8 val) +{ + unsigned char data[3]; + + put_unaligned_be16(reg, data); + data[2] = val; + + return mlx7502x_write(sd, data, 3); +} + +static int mlx7502x_write16(struct v4l2_subdev *sd, u16 reg, u16 val) +{ + unsigned char data[4]; + + put_unaligned_be16(reg, data); + put_unaligned_be16(val, data + 2); + + return mlx7502x_write(sd, data, 4); +} + +static int mlx7502x_write24(struct v4l2_subdev *sd, u16 reg, u32 val) +{ + unsigned char data[5]; + + put_unaligned_be16(reg, data); + put_unaligned_be24(val, data + 2); + + return mlx7502x_write(sd, data, 5); +} + +static int mlx7502x_write32(struct v4l2_subdev *sd, u16 reg, u32 val) +{ + unsigned char data[6]; + + put_unaligned_be16(reg, data); + put_unaligned_be32(val, data + 2); + + return mlx7502x_write(sd, data, 6); +} + +static int mlx7502x_write_regval(struct v4l2_subdev *sd, + const struct mlx7502x_regval_list *regs, int array_size) +{ + int i, ret; + + for (i = 0; i < array_size; i++) { + ret = mlx7502x_write8(sd, regs[i].addr, regs[i].data); + if (ret < 0) + return ret; + } + + return 0; +} + +static int mlx7502x_write_array(struct v4l2_subdev *sd, const u16 *reg, const u8 *data, int size) +{ + int i, ret; + + for (i = 0; i < size; i++) { + ret = mlx7502x_write8(sd, reg[i], data[i]); + if (ret < 0) + return ret; + } + + return 0; +} + +/* + * ********************************************************************************* + * PM + * ********************************************************************************* + */ +static int mlx7502x_init(struct v4l2_subdev *sd) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + int ret; + + ret = mlx7502x_write_regval(sd, mlx7502x_common_init_cfg, + ARRAY_SIZE(mlx7502x_common_init_cfg)); + if (ret < 0) { + dev_err(sensor->dev, "failed to write init_cfg\n"); + return ret; + } + + ret = mlx7502x_write_regval(sd, sensor->cur_desc->init_cfg, + sensor->cur_desc->init_cfg_size); + if (ret < 0) { + dev_err(sensor->dev, "failed to write sensor specific init_cfg\n"); + return ret; + } + + return ret; +} + +static int mlx7502x_power_on(struct mlx7502x *sensor) +{ + int ret; + + gpiod_set_value_cansleep(sensor->reset, 0); + + ret = regulator_bulk_enable(MLX7502X_NUM_SUPPLIES, sensor->supplies); + if (ret) { + dev_err(sensor->dev, "Failed to enable supply: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(sensor->xclk); + if (ret) { + dev_err(sensor->dev, "Failed to enable external clock: %d\n", ret); + goto fail_clk; + } + + gpiod_set_value_cansleep(sensor->reset, 1); + msleep(MLX7502X_RESET_DELAY_MS); + + dev_dbg(sensor->dev, "power on\n"); + + return 0; + +fail_clk: + regulator_bulk_disable(MLX7502X_NUM_SUPPLIES, sensor->supplies); + return ret; +} + +static int mlx7502x_power_off(struct mlx7502x *sensor) +{ + gpiod_set_value_cansleep(sensor->reset, 0); + + clk_disable_unprepare(sensor->xclk); + + regulator_bulk_disable(MLX7502X_NUM_SUPPLIES, sensor->supplies); + + dev_dbg(sensor->dev, "power off\n"); + + return 0; +} + +static int __maybe_unused mlx7502x_runtime_resume(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct mlx7502x *sensor = to_mlx7502x(sd); + int ret; + + ret = mlx7502x_power_on(sensor); + if (ret) + return ret; + + return mlx7502x_init(sd); +} + +static int __maybe_unused mlx7502x_runtime_suspend(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct mlx7502x *sensor = to_mlx7502x(sd); + + mlx7502x_power_off(sensor); + + return 0; +} + +/* + * ********************************************************************************* + * Subdev operations + * ********************************************************************************* + */ +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int mlx7502x_get_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + u8 val[4]; + int ret; + + /* v4l2-dbg set it to 0 */ + if (reg->size == 0) + reg->size = 1; + + ret = mlx7502x_read(sd, reg->reg & 0xffff, val, reg->size); + if (ret < 0) + return ret; + + if (reg->size == 1) + reg->val = val[0]; + else if (reg->size == 2) + reg->val = get_unaligned_be16(val); + else if (reg->size == 3) + reg->val = get_unaligned_be24(val); + else if (reg->size == 4) + reg->val = get_unaligned_be32(val); + else + return -EINVAL; + + return 0; +} + +static int mlx7502x_set_register(struct v4l2_subdev *sd, + const struct v4l2_dbg_register *reg) +{ + if (reg->size <= 1) + return mlx7502x_write8(sd, reg->reg & 0xffff, reg->val); + else if (reg->size == 2) + return mlx7502x_write16(sd, reg->reg & 0xffff, reg->val); + else if (reg->size == 3) + return mlx7502x_write24(sd, reg->reg & 0xffff, reg->val); + else if (reg->size == 4) + return mlx7502x_write32(sd, reg->reg & 0xffff, reg->val); + + return -EINVAL; +} +#endif + +/* from us into sensor ticks */ +static unsigned int mlx7502x_from_us(struct mlx7502x *sensor, u32 us) +{ + return DIV_ROUND_CLOSEST(us * MLX7502X_CLK_RATE_MHZ, sensor->hmax); +} + +static unsigned int mlx7502x_to_us(struct mlx7502x *sensor, u32 reg) +{ + return DIV_ROUND_CLOSEST(reg * sensor->hmax, MLX7502X_CLK_RATE_MHZ); +} + +static int mlx7502x_set_link_freq(struct mlx7502x *sensor) +{ + struct v4l2_subdev *sd = &sensor->sd; + const struct mlx7502x_link_freq_list *lfc = sensor->cur_desc->link_freq_cfg; + struct v4l2_mbus_config_mipi_csi2 *bus = &sensor->ep.bus.mipi_csi2; + u8 lane_n = bus->num_data_lanes; + u32 pretime; + int ret; + + /* lane */ + ret = mlx7502x_write8(sd, MLX7502X_DATA_LANE_CONFIG_REG, lane_n - 1); + if (ret < 0) + return ret; + + /* link freq */ + ret = mlx7502x_write_array(sd, lfc->addr, + lfc->data[lane_n >> 2][sensor->link_freq->val], + MLX7502X_LINK_FREQ_REG_N); + if (ret < 0) + return ret; + + /* clock continuous mode if MIPI receiver requires it */ + ret = mlx7502x_write8(sd, MLX7502X_CONTINUOUS_REG, + bus->flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK ? 1u : 0u); + if (ret < 0) + return ret; + + ret = mlx7502x_write16(sd, MLX7502X_HMAX_REG, sensor->hmax); + if (ret < 0) + return ret; + + /* timings which depends on hmax and mipi config */ + ret = mlx7502x_write8(sd, MLX7502X_PLLSETUP_REG, + mlx7502x_from_us(sensor, MLX7502X_PLLSETUP_US) + + MLX7502X_PLLSETUP_TICKS); + if (ret < 0) + return ret; + + pretime = mlx7502x_from_us(sensor, MLX7502X_PRETIME_US); + ret = mlx7502x_write16(sd, MLX7502X_PRETIME_REG, pretime); + if (ret < 0) + return ret; + + return mlx7502x_write24(sd, MLX7502X_RANDNM0_REG, + pretime * sensor->hmax - 1070 - 2098); +} + +static int mlx7502x_update_output_format(struct mlx7502x *sensor) +{ + struct v4l2_rect *crop = &sensor->crop; + struct v4l2_subdev *sd = &sensor->sd; + int ret; + + ret = mlx7502x_write16(sd, MLX7502X_COLUMN_START_REG, crop->left + 1u); + if (ret < 0) + return ret; + ret = mlx7502x_write16(sd, MLX7502X_COLUMN_LEN_REG, crop->width); + if (ret < 0) + return ret; + ret = mlx7502x_write16(sd, MLX7502X_ROW_START_REG, MLX7502X_ROW_START(crop->top)); + if (ret < 0) + return ret; + ret = mlx7502x_write16(sd, MLX7502X_ROW_END_REG, + MLX7502X_ROW_END(crop->top, crop->height)); + if (ret < 0) + return ret; + ret = mlx7502x_write8(sd, MLX7502X_BINNING_REG, + sensor->binning_mode->reg_value); + if (ret < 0) + return ret; + ret = mlx7502x_write8(sd, MLX7502X_OUTPUT_MODE_REG, sensor->output_mode->val); + if (ret < 0) + return ret; + + return 0; +} + +static int mlx7502x_sw_trigger(struct mlx7502x *sensor) +{ + return mlx7502x_write8(&sensor->sd, MLX7502X_SW_TRIGGER_REG, MLX7502X_SW_TRIGGER_TRIG); +} + +static int mlx7502x_sw_trigger_start(struct mlx7502x *sensor) +{ + /* this func is called once after streaming was enabled + * we need to skip first trigger as the frame is already generated, + * when streaming was enabled + */ + sensor->trigger = mlx7502x_sw_trigger; + return 0; +} + +static int mlx7502x_hw_trigger(struct mlx7502x *sensor) +{ + gpiod_set_value_cansleep(sensor->trig, 0); + usleep_range(MLX7502X_TRIGGER_DELAY_US, MLX7502X_TRIGGER_DELAY_US + 10); + gpiod_set_value_cansleep(sensor->trig, 1); + + return 0; +} + +static int mlx7502x_cont_trigger(struct mlx7502x *sensor) +{ + return -1; /* in continuous mode, we can't use trigger */ +} + +static int mlx7502x_check_frame_interval(struct mlx7502x *sensor, struct v4l2_fract fi) +{ + u32 req_fi_us, min_fi_us, readout_ticks; + int fi_register = 0; + + if (fi.denominator != 0) { + readout_ticks = MLX7502X_ROW_END(sensor->crop.top, sensor->crop.height) + - MLX7502X_ROW_START(sensor->crop.top) + 1; + min_fi_us = MLX7502X_PLLSETUP_US + + mlx7502x_to_us(sensor, MLX7502X_PLLSETUP_TICKS) + + (mlx7502x_to_us(sensor, readout_ticks + MLX7502X_FRAME_ADD_TICKS) + + MLX7502X_PRETIME_US + sensor->tint->val) + * sensor->phase_number->val; + + req_fi_us = MICRO * fi.numerator / fi.denominator; + + if (req_fi_us < min_fi_us) { + dev_err(sensor->dev, "Too small frame interval: min = %dus, requested = %dus\n", + min_fi_us, req_fi_us); + return -EINVAL; + } + + fi_register = mlx7502x_from_us(sensor, req_fi_us); + } + + return fi_register; +} + +static int mlx7502x_set_trigger_mode(struct mlx7502x *sensor) +{ + int ret; + struct v4l2_subdev *sd = &sensor->sd; + int frame_interval = 0; + enum mlx7502x_trigger_mode mode = sensor->trigger_mode->val; + + switch (mode) { + case MLX7502X_SOFTWARE: + ret = mlx7502x_write_regval(sd, mlx7502x_sw_trigger_cfg, + ARRAY_SIZE(mlx7502x_sw_trigger_cfg)); + if (ret < 0) + break; + + ret = mlx7502x_write8(sd, MLX7502X_SW_TRIGGER_REG, MLX7502X_SW_TRIGGER_DEFAULT); + sensor->trigger = mlx7502x_sw_trigger_start; + + break; + case MLX7502X_HARDWARE: + ret = mlx7502x_write_regval(sd, mlx7502x_hw_trigger_cfg, + ARRAY_SIZE(mlx7502x_hw_trigger_cfg)); + sensor->trigger = mlx7502x_hw_trigger; + break; + case MLX7502X_CONTINUOUS: + ret = mlx7502x_check_frame_interval(sensor, sensor->frame_interval); + if (ret < 0) + break; + + frame_interval = ret; + ret = mlx7502x_write_regval(sd, mlx7502x_sw_trigger_cfg, + ARRAY_SIZE(mlx7502x_sw_trigger_cfg)); + if (ret < 0) + break; + + ret = mlx7502x_write8(sd, MLX7502X_SW_TRIGGER_REG, MLX7502X_SW_TRIGGER_CONT); + sensor->trigger = mlx7502x_cont_trigger; + break; + default: + /* should not be there */ + ret = -EINVAL; + break; + } + + if (ret < 0) + return ret; + + return mlx7502x_write32(sd, MLX7502X_FRAME_TIME_REG, frame_interval); +} + +static int mlx7502x_s_stream(struct v4l2_subdev *sd, int on) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + int ret; + + mutex_lock(&sensor->lock); + + if (on && !sensor->streaming) { + ret = pm_runtime_resume_and_get(sensor->dev); + if (ret < 0) { + mutex_unlock(&sensor->lock); + return ret; + } + + ret = __v4l2_ctrl_handler_setup(sd->ctrl_handler); + if (ret < 0) + goto error_stream; + /* the registers below depends on hmax, which is configured in controls */ + ret = mlx7502x_set_link_freq(sensor); + if (ret < 0) + goto error_stream; + ret = mlx7502x_update_output_format(sensor); + if (ret < 0) + goto error_stream; + ret = mlx7502x_set_trigger_mode(sensor); + if (ret < 0) + goto error_stream; + + ret = mlx7502x_write8(sd, MLX7502X_STREAM_EN_REG, 1u); + if (ret < 0) + goto error_stream; + + sensor->streaming = 1u; + dev_dbg(sensor->dev, "stream enabled\n"); + + /* we need to wait to stabilize the system after streaming on */ + usleep_range(MLX7502X_STREAMING_DELAY_US, MLX7502X_STREAMING_DELAY_US + 10); + + gpiod_set_value_cansleep(sensor->leden, 1); + } else if (!on && sensor->streaming) { + gpiod_set_value_cansleep(sensor->leden, 0); + + sensor->streaming = 0u; + ret = mlx7502x_write8(sd, MLX7502X_STREAM_EN_REG, 0u); + dev_dbg(sensor->dev, "stream disabled\n"); + + pm_runtime_mark_last_busy(sensor->dev); + pm_runtime_put_autosuspend(sensor->dev); + } + + mutex_unlock(&sensor->lock); + return ret; + +error_stream: + pm_runtime_put(sensor->dev); + mutex_unlock(&sensor->lock); + return ret; +} + +static int mlx7502x_get_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *fi) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + + fi->interval = sensor->frame_interval; + + return 0; +} + +static int mlx7502x_set_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *frame_interval) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + int fi_register; + int ret = 0; + + mutex_lock(&sensor->lock); + + if (sensor->trigger_mode->val != MLX7502X_CONTINUOUS) { + dev_err(sensor->dev, "Can't change frame interval in non countinuous mode\n"); + ret = -EINVAL; + goto unlock_mut; + } + + fi_register = mlx7502x_check_frame_interval(sensor, frame_interval->interval); + if (fi_register < 0) { + ret = fi_register; + goto unlock_mut; + } + + sensor->frame_interval = frame_interval->interval; + if (!pm_runtime_get_if_in_use(sensor->dev)) + goto unlock_mut; + + ret = mlx7502x_write32(sd, MLX7502X_FRAME_TIME_REG, fi_register); + pm_runtime_put_autosuspend(sensor->dev); + +unlock_mut: + mutex_unlock(&sensor->lock); + return ret; +} + +static int mlx7502x_fill_format(struct mlx7502x *sensor, + struct v4l2_mbus_framefmt *format, + struct v4l2_rect *src_compose) +{ + int width_double; + + mutex_lock(&sensor->lock); + + width_double = sensor->output_mode->val == MLX7502X_RAW_ANB ? 2 : 1; + + memset(format, 0, sizeof(*format)); + format->code = MEDIA_BUS_FMT_Y12_1X12; + format->width = width_double * src_compose->width; + format->height = src_compose->height; + format->field = V4L2_FIELD_NONE; + format->colorspace = V4L2_COLORSPACE_RAW; + format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + format->quantization = V4L2_QUANTIZATION_FULL_RANGE; + format->xfer_func = V4L2_XFER_FUNC_NONE; + + mutex_unlock(&sensor->lock); + + return 0; +} + +static int mlx7502x_init_cfg(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + + /* copying active into try */ + sd_state->pads->try_crop = sensor->crop; + sd_state->pads->try_compose = sensor->compose; + return mlx7502x_fill_format(sensor, &sd_state->pads->try_fmt, &sensor->compose); +} + +static int mlx7502x_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index > 0) + return -EINVAL; + + code->code = MEDIA_BUS_FMT_Y12_1X12; + + return 0; +} + +static int mlx7502x_set_get_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *format) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + struct v4l2_rect *src_compose; + + if (format->pad != 0) + return -EINVAL; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + src_compose = &sd_state->pads->try_compose; + else + src_compose = &sensor->compose; + + return mlx7502x_fill_format(sensor, &format->format, src_compose); +} + +static int mlx7502x_round(u32 flags, u32 val, u32 max, u32 min, u32 step) +{ + u32 rounded; + + /* using round_* as step is always power of 2 */ + if (flags & V4L2_SEL_FLAG_LE) + rounded = round_down(val, step); + else + rounded = round_up(val, step); + + return clamp(rounded, min, max); +} + +static const struct mlx7502x_binning_mode *mlx7502x_find_binning_mode(struct v4l2_rect *dst_crop, + struct v4l2_rect *dst_compose) +{ + int i; + const struct mlx7502x_binning_mode *bin_mode; + u8 ratio = dst_crop->width / dst_compose->width; + + for (i = 0; i < ARRAY_SIZE(binning_mode); i++) { + bin_mode = &binning_mode[i]; + + if (bin_mode->ratio == ratio) + break; + } + + return bin_mode; +} + +static void mlx7502x_set_crop(struct mlx7502x *sensor, + struct v4l2_subdev_selection *sel, + struct v4l2_rect *dst_crop, + struct v4l2_rect *dst_compose, + const struct mlx7502x_binning_mode *bin_mode) +{ + u32 w, h; + + /* cropping will always be in native size, even if binning was applied */ + w = sensor->cur_desc->width; + h = sensor->cur_desc->height; + + sel->r.width = mlx7502x_round(sel->flags, sel->r.width, w, + bin_mode->width_min, bin_mode->width_step); + sel->r.left = mlx7502x_round(sel->flags, sel->r.left, w - sel->r.width, + MLX7502X_LEFT_MIN, MLX7502X_LEFT_STEP); + + sel->r.height = mlx7502x_round(sel->flags, sel->r.height, h, + bin_mode->height_min, bin_mode->height_step); + sel->r.top = mlx7502x_round(sel->flags, sel->r.top, h - sel->r.height, + MLX7502X_TOP_MIN, MLX7502X_TOP_STEP); + /* fill active or try */ + *dst_crop = sel->r; + /* update binning w/h, as actual crop size could changed */ + dst_compose->top = 0; + dst_compose->left = 0; + dst_compose->width = dst_crop->width / bin_mode->ratio; + dst_compose->height = dst_crop->height / bin_mode->ratio; +} + +/* + * Binning is applied after cropping inside the sensor + */ +static void mlx7502x_set_compose(struct mlx7502x *sensor, + struct v4l2_subdev_selection *sel, + struct v4l2_rect *dst_crop, + struct v4l2_rect *dst_compose) +{ + const struct mlx7502x_binning_mode *bin_mode; + u32 w, h, i, bin_w, bin_h; + + w = dst_crop->width; + h = dst_crop->height; + + /* select the best binning */ + for (i = 0; i < ARRAY_SIZE(binning_mode); i++) { + bin_mode = &binning_mode[i]; + + if (sel->flags & V4L2_SEL_FLAG_LE) { + bin_w = w / bin_mode->ratio; + bin_h = h / bin_mode->ratio; + } else {/* for GE and KEEP choose lower bin_w/h */ + bin_w = w / bin_mode[1].ratio + 1; + bin_h = h / bin_mode[1].ratio + 1; + } + + if (sel->r.width >= bin_w && sel->r.height >= bin_h) + break; + } + + /* save new binning config */ + if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) + sensor->binning_mode = bin_mode; + + /* update crop step and min, based on new binning */ + sel->r = *dst_crop; + mlx7502x_set_crop(sensor, sel, dst_crop, dst_compose, bin_mode); + + /* resulted format after applying new binning */ + sel->r = *dst_compose; +} + +static int mlx7502x_set_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + struct v4l2_rect *dst_crop, *dst_compose; + const struct mlx7502x_binning_mode *bin_mode; + int ret = 0; + + if (sel->pad != 0) + return -EINVAL; + + if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { + dst_crop = v4l2_subdev_get_try_crop(sd, sd_state, 0); + dst_compose = v4l2_subdev_get_try_compose(sd, sd_state, 0); + bin_mode = mlx7502x_find_binning_mode(dst_crop, dst_compose); + } else { + dst_crop = &sensor->crop; + dst_compose = &sensor->compose; + bin_mode = sensor->binning_mode; + } + + mutex_lock(&sensor->lock); + + if (sel->target == V4L2_SEL_TGT_CROP) + mlx7502x_set_crop(sensor, sel, dst_crop, dst_compose, bin_mode); + else if (sel->target == V4L2_SEL_TGT_COMPOSE) /* actually this is binning */ + mlx7502x_set_compose(sensor, sel, dst_crop, dst_compose); + else + ret = -EINVAL; + + mutex_unlock(&sensor->lock); + + return ret; +} + +static int mlx7502x_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + struct v4l2_rect *src_crop, *src_compose; + int ret = 0; + + if (sel->pad != 0) + return -EINVAL; + + if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { + src_crop = v4l2_subdev_get_try_crop(sd, sd_state, 0); + src_compose = v4l2_subdev_get_try_compose(sd, sd_state, 0); + } else { + src_crop = &sensor->crop; + src_compose = &sensor->compose; + } + + mutex_lock(&sensor->lock); + + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + sel->r = *src_crop; + break; + case V4L2_SEL_TGT_CROP_DEFAULT: + case V4L2_SEL_TGT_CROP_BOUNDS: + case V4L2_SEL_TGT_NATIVE_SIZE: + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = sensor->cur_desc->width; + sel->r.height = sensor->cur_desc->height; + break; + case V4L2_SEL_TGT_COMPOSE: + sel->r = *src_compose; + 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; + default: + ret = -EINVAL; + } + + mutex_unlock(&sensor->lock); + + return ret; +} + +static const struct v4l2_subdev_core_ops mlx7502x_subdev_core_ops = { + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = mlx7502x_get_register, + .s_register = mlx7502x_set_register, +#endif +}; + +static const struct v4l2_subdev_video_ops mlx7502x_subdev_video_ops = { + .s_stream = mlx7502x_s_stream, + .g_frame_interval = mlx7502x_get_frame_interval, + .s_frame_interval = mlx7502x_set_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops mlx7502x_subdev_pad_ops = { + .init_cfg = mlx7502x_init_cfg, + .enum_mbus_code = mlx7502x_enum_mbus_code, + .set_fmt = mlx7502x_set_get_format, + .get_fmt = mlx7502x_set_get_format, + .set_selection = mlx7502x_set_selection, + .get_selection = mlx7502x_get_selection, +}; + +static const struct v4l2_subdev_ops mlx7502x_subdev_ops = { + .core = &mlx7502x_subdev_core_ops, + .video = &mlx7502x_subdev_video_ops, + .pad = &mlx7502x_subdev_pad_ops, +}; + +/* + * ********************************************************************************* + * Controls + * ********************************************************************************* + */ +static __always_inline u8 mlx7502x_phase_to_reg(u16 phase) +{ + /* Note: + * Sensor is working in mode when: MIX is a referance, and illumination is shifted + * To compensate it, we need to add 180 degrees + */ + if (phase != 0 && phase != 180) + phase = (phase + 180) % 360; + + return phase / 45; +} + +static int mlx7502x_set_phase_seq(struct mlx7502x *sensor, struct v4l2_ctrl *ctrl) +{ + int i, offset; + u16 *p_v; + u8 val; + u8 data[2 + (MLX7502X_PHASE_MAX_NUM >> 1)]; /* address + 4 bytes(2 phases per byte) */ + + /* the address */ + put_unaligned_be16(MLX7502X_PX_PHASE_SHIFT_REG, data); + + /* data itself */ + offset = 2; + p_v = ctrl->p_new.p_u16; + for (i = 0; i < MLX7502X_PHASE_MAX_NUM; i += 2) { + val = FIELD_PREP(MLX7502X_NIBLE_LOW_MASK, mlx7502x_phase_to_reg(p_v[i])); + val |= FIELD_PREP(MLX7502X_NIBLE_HIGH_MASK, mlx7502x_phase_to_reg(p_v[i + 1])); + + data[offset++] = val; + } + + return mlx7502x_write(&sensor->sd, data, ARRAY_SIZE(data)); +} + +/* comparator for bsearch func */ +static int mlx7502x_fmod_cmp(const void *key, const void *elt) +{ + int ret = 1; /* lower then lowest */ + u8 val = *((u8 *)key); + /* need prev elt for range checking, so key requires to be >= 4 */ + struct mlx7502x_fmod_list *el = (struct mlx7502x_fmod_list *)elt - 1; + u8 high = el[0].fmod; + u8 low = el[1].fmod; + + if (val > high) /* more then the highest, move to lower index */ + ret = -1; + else if (val >= low) /* we are in a range */ + ret = 0; + + return ret; +} + +static int mlx7502x_set_fmod(struct mlx7502x *sensor, u8 fmod) +{ + int ret; + u16 fmod_reg; + u8 pll_res_reg; + struct v4l2_subdev *sd = &sensor->sd; + struct mlx7502x_fmod_list *fc = bsearch(&fmod, + mlx7502x_fmod_cfg, + ARRAY_SIZE(mlx7502x_fmod_cfg), + sizeof(struct mlx7502x_fmod_list), + mlx7502x_fmod_cmp); + + ret = mlx7502x_write8(sd, MLX7502X_DIVSELPRE_REG, fc->divselpre); + if (ret < 0) + return ret; + + ret = mlx7502x_write8(sd, MLX7502X_DIVSEL_REG, fc->divsel); + if (ret < 0) + return ret; + + fmod_reg = fmod << (fc->divselpre + fc->divsel); + ret = mlx7502x_write16(sd, MLX7502X_FMOD_REG, fmod_reg); + if (ret < 0) + return ret; + + pll_res_reg = fmod_reg < MLX7502X_PLL_RES_THR ? 2 : 0; + return mlx7502x_write8(sd, MLX7502X_PLL_RES_REG, pll_res_reg); +} + +static int mlx7502x_set_tint(struct mlx7502x *sensor, u16 tint) +{ + int i, offset; + u32 tint_reg = mlx7502x_from_us(sensor, tint) * sensor->hmax; + u8 data[2 + MLX7502X_PHASE_MAX_NUM * 4]; /* address + 32bytes(4 bytes per phase) */ + + /* the address */ + put_unaligned_be16(MLX7502X_TINT0_REG, data); + + /* data itself */ + for (i = 0; i < MLX7502X_PHASE_MAX_NUM; i++) { + offset = 2 + i * 4; + put_unaligned_be32(tint_reg, data + offset); + } + + return mlx7502x_write(&sensor->sd, data, ARRAY_SIZE(data)); +} + +static int mlx7502x_update_hmax(struct mlx7502x *sensor, int mipi_speed_ind, int output_mode) +{ + const struct mlx7502x_link_freq_list *lfc = sensor->cur_desc->link_freq_cfg; + int width_double = output_mode == MLX7502X_RAW_ANB ? 1 : 0; + u8 lane_n = sensor->ep.bus.mipi_csi2.num_data_lanes; + u32 tint_step; + + sensor->hmax = lfc->hmax[lane_n >> 2][mipi_speed_ind][width_double]; + + tint_step = mlx7502x_to_us(sensor, 1); + return __v4l2_ctrl_modify_range(sensor->tint, + tint_step, + sensor->tint->maximum, + tint_step, + sensor->tint->default_value); +} + +static int mlx7502x_hold(struct mlx7502x *sensor, u32 id, u8 hold) +{ + int ret = 0; + + if (!sensor->streaming) /* only during streaming */ + return 0; + + switch (id) { + case V4L2_CID_MLX7502X_PHASE_NUMBER: + case V4L2_CID_MLX7502X_PHASE_SEQ: + case V4L2_CID_MLX7502X_FMOD: + case V4L2_CID_MLX7502X_TINT: + ret = mlx7502x_write8(&sensor->sd, MLX7502X_PARAM_HOLD_REG, hold); + break; + default: + break; + } + + return ret; +} + +static int mlx7502x_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + int ret; + u8 val; + struct mlx7502x *sensor = container_of(ctrl->handler, + struct mlx7502x, ctrl_handler); + struct v4l2_subdev *sd = &sensor->sd; + + if (ctrl->id != V4L2_CID_MLX7502X_TEMPERATURE) + return -EINVAL; + + if (!pm_runtime_get_if_in_use(sensor->dev)) + return 0; + + ret = mlx7502x_read(sd, MLX7502X_TEMPERATURE_REG, &val, 1); + ctrl->val = val - 40; + + pm_runtime_put_autosuspend(sensor->dev); + + return ret; +} + +static int mlx7502x_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct mlx7502x *sensor = container_of(ctrl->handler, + struct mlx7502x, ctrl_handler); + struct v4l2_subdev *sd = &sensor->sd; + int ret = 0; + + if (!pm_runtime_get_if_in_use(sensor->dev)) + return 0; + + ret = mlx7502x_hold(sensor, ctrl->id, 1); + if (ret < 0) + return ret; + + switch (ctrl->id) { + case V4L2_CID_MLX7502X_PHASE_NUMBER: + ret = mlx7502x_write8(sd, MLX7502X_PHASE_COUNT_REG, ctrl->val); + break; + case V4L2_CID_MLX7502X_PHASE_SEQ: + ret = mlx7502x_set_phase_seq(sensor, ctrl); + break; + case V4L2_CID_MLX7502X_FMOD: + ret = mlx7502x_set_fmod(sensor, ctrl->val); + break; + case V4L2_CID_MLX7502X_TINT: + ret = mlx7502x_set_tint(sensor, ctrl->val); + break; + case V4L2_CID_MLX7502X_TRIGGER_MODE: + if (ctrl->val == MLX7502X_CONTINUOUS) + ret = mlx7502x_check_frame_interval(sensor, sensor->frame_interval); + break; + case V4L2_CID_MLX7502X_TRIGGER: + ret = sensor->trigger(sensor); + break; + case V4L2_CID_MLX7502X_OUTPUT_MODE: + ret = mlx7502x_update_hmax(sensor, + sensor->link_freq->val, + ctrl->val); + break; + case V4L2_CID_LINK_FREQ: + ret = mlx7502x_update_hmax(sensor, + ctrl->val, + sensor->output_mode->val); + break; + case V4L2_CID_VFLIP: + ret = mlx7502x_write8(sd, MLX7502X_VFLIP_REG, ctrl->val); + break; + case V4L2_CID_HFLIP: + ret = mlx7502x_write8(sd, MLX7502X_HFLIP_REG, ctrl->val); + break; + default: + dev_err(sensor->dev, "Unknown id: %x\n", ctrl->id); + break; + } + + mlx7502x_hold(sensor, ctrl->id, 0); + pm_runtime_put_autosuspend(sensor->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops mlx7502x_ctrl_ops = { + .s_ctrl = mlx7502x_s_ctrl, + .g_volatile_ctrl = mlx7502x_g_volatile_ctrl, +}; + +static const struct v4l2_ctrl_config mlx7502x_phase_number = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_PHASE_NUMBER, + .name = "Number of phases", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = 1, + .max = MLX7502X_PHASE_MAX_NUM, + .step = 1, + .def = 4, +}; + +static const struct v4l2_ctrl_config mlx7502x_phase_sequence = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_PHASE_SEQ, + .name = "Sequence of phases", + .type = V4L2_CTRL_TYPE_U16, + .min = 0, + .max = 315, + .step = 45, + .def = 0, + .elem_size = sizeof(u16), + .dims = { 8 }, +}; + +static const struct v4l2_ctrl_config mlx7502x_fmod = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_FMOD, + .name = "Modulation fraquency", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = 4, + .max = 100, + .step = 1, /* in MHz */ + .def = 40, +}; + +static const struct v4l2_ctrl_config mlx7502x_tint = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_TINT, + .name = "Time integration", + .type = V4L2_CTRL_TYPE_INTEGER, + .min = 5, + .max = 1000, + .step = 1, /* in us */ + .def = 198, +}; + +static const struct v4l2_ctrl_config mlx7502x_trigger_mode = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_TRIGGER_MODE, + .name = "Trigger mode", + .type = V4L2_CTRL_TYPE_MENU, + .max = ARRAY_SIZE(mlx7502x_ctrl_trigger_mode) - 1, + .def = 2, + .qmenu = mlx7502x_ctrl_trigger_mode, +}; + +static const struct v4l2_ctrl_config mlx7502x_trigger = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_TRIGGER, + .name = "Send trigger", + .type = V4L2_CTRL_TYPE_BUTTON, +}; + +static const struct v4l2_ctrl_config mlx7502x_output_mode = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_OUTPUT_MODE, + .name = "Output mode", + .type = V4L2_CTRL_TYPE_MENU, + .max = ARRAY_SIZE(mlx7502x_ctrl_output) - 1, + .def = 0, + .qmenu = mlx7502x_ctrl_output, +}; + +static const struct v4l2_ctrl_config mlx7502x_temperature = { + .ops = &mlx7502x_ctrl_ops, + .id = V4L2_CID_MLX7502X_TEMPERATURE, + .name = "Temperature", + .type = V4L2_CTRL_TYPE_INTEGER, + .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE, + .min = -40, + .max = 125, + .step = 1, +}; + +static int mlx7502x_link_freq_init(struct mlx7502x *sensor) +{ + struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler; + const s64 *link_freq = sensor->cur_desc->link_freq_cfg->link_freq; + int i, j, link_freq_mask; + + link_freq_mask = 0; + for (i = 0; i < sensor->ep.nr_of_link_frequencies; i++) { + for (j = 0; j < MLX7502X_LINK_FREQ_N; j++) { + if (link_freq[j] == sensor->ep.link_frequencies[i]) + break; + } + + if (j == MLX7502X_LINK_FREQ_N) { + dev_err(sensor->dev, "no link frequency %lld supported\n", link_freq[j]); + return -EINVAL; + } + + link_freq_mask |= (1 << j); + } + + sensor->link_freq = v4l2_ctrl_new_int_menu(hdl, &mlx7502x_ctrl_ops, + V4L2_CID_LINK_FREQ, + MLX7502X_LINK_FREQ_N - 1, + __fls(link_freq_mask), + link_freq); + + sensor->link_freq->menu_skip_mask = ~link_freq_mask; + + return 0; +} + +static int mlx7502x_ctrls_init(struct mlx7502x *sensor) +{ + struct v4l2_ctrl_handler *hdl; + struct v4l2_ctrl *ctrl; + int ret = 0; + + hdl = &sensor->ctrl_handler; + + ret = v4l2_ctrl_handler_init(hdl, 9); + if (ret) { + dev_err(sensor->dev, "Failed to init handler - %d\n", ret); + return ret; + } + + ret = mlx7502x_link_freq_init(sensor); + if (ret) + goto error_ctrls; + + v4l2_ctrl_new_std(hdl, &mlx7502x_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(hdl, &mlx7502x_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); + + v4l2_ctrl_new_custom(hdl, &mlx7502x_fmod, NULL); + v4l2_ctrl_new_custom(hdl, &mlx7502x_trigger, NULL); + v4l2_ctrl_new_custom(hdl, &mlx7502x_temperature, NULL); + ctrl = v4l2_ctrl_new_custom(hdl, &mlx7502x_phase_sequence, NULL); + /* init custom control(which has custom payload) */ + memcpy(ctrl->p_cur.p_u16, mlx7502x_ctrl_phase_sequence, + 2 * ARRAY_SIZE(mlx7502x_ctrl_phase_sequence)); + + sensor->tint = v4l2_ctrl_new_custom(hdl, &mlx7502x_tint, NULL); + sensor->output_mode = v4l2_ctrl_new_custom(hdl, &mlx7502x_output_mode, NULL); + sensor->phase_number = v4l2_ctrl_new_custom(hdl, &mlx7502x_phase_number, NULL); + sensor->trigger_mode = v4l2_ctrl_new_custom(hdl, &mlx7502x_trigger_mode, NULL); + /* if hardware gpio is absent, then skip this config in ctrl */ + if (!sensor->trig) + sensor->trigger_mode->menu_skip_mask = BIT(MLX7502X_HARDWARE); + + if (hdl->error) { + dev_err(sensor->dev, "Error %d while adding controls\n", hdl->error); + ret = hdl->error; + goto error_ctrls; + } + + sensor->sd.ctrl_handler = hdl; + return 0; + +error_ctrls: + v4l2_ctrl_handler_free(hdl); + return ret; +} + +/* + * ********************************************************************************* + * Probing + * ********************************************************************************* + */ +static int mlx7502x_detect(struct v4l2_subdev *sd) +{ + struct mlx7502x *sensor = to_mlx7502x(sd); + const struct mlx7502x_regval_list *reg; + int ret, i; + u8 val; + + for (i = 0; i < ARRAY_SIZE(mlx7502x_detect_cfg); i++) { + reg = &mlx7502x_detect_cfg[i]; + + ret = mlx7502x_read(sd, reg->addr, &val, 1); + if (ret < 0) { + dev_err(sensor->dev, "Coudn't read any data\n"); + return ret; + } + + if (val != reg->data) { + dev_err(sensor->dev, "Coudn't find the sensor\n"); + return -EIO; + } + } + + ret = mlx7502x_read(sd, MLX7502X_SENSOR_ID_REG, &val, 1); + if (ret < 0) { + dev_err(sensor->dev, "Coudn't read any data\n"); + return ret; + } + + /* autodetect sensor type */ + if ((val & MLX7502X_75026_ID) != 0) + sensor->cur_desc = &mlx75026; + else + sensor->cur_desc = &mlx75027; + + return 0; +} + +static int mlx7502x_parse_dt(struct mlx7502x *sensor, struct device *dev) +{ + struct fwnode_handle *endpoint; + int ret, num_data_lanes, i; + u32 xclk_rate; + + for (i = 0; i < MLX7502X_NUM_SUPPLIES; i++) + sensor->supplies[i].supply = mlx7502x_supply_names[i]; + + ret = devm_regulator_bulk_get(dev, MLX7502X_NUM_SUPPLIES, + sensor->supplies); + if (ret) + return ret; + + sensor->xclk = devm_clk_get(dev, NULL); + if (IS_ERR(sensor->xclk)) { + dev_err(dev, "failed to get xclk\n"); + return PTR_ERR(sensor->xclk); + } + + xclk_rate = clk_get_rate(sensor->xclk); + if (xclk_rate != MLX7502X_XCLK_RATE) { + dev_err(dev, "only 8MHz clock is supported\n"); + return -EINVAL; + } + + sensor->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(sensor->reset)) { + dev_err(dev, "failed to get reset\n"); + return PTR_ERR(sensor->reset); + } + + sensor->leden = devm_gpiod_get_optional(dev, "melexis,leden", GPIOD_OUT_LOW); + if (IS_ERR(sensor->leden)) { + dev_err(dev, "failed to get leden\n"); + return PTR_ERR(sensor->leden); + } + + sensor->trig = devm_gpiod_get_optional(dev, "melexis,trig", GPIOD_OUT_HIGH); + if (IS_ERR(sensor->trig)) { + dev_err(dev, "failed to get trig\n"); + return PTR_ERR(sensor->trig); + } + + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); + if (!endpoint) { + dev_err(dev, "endpoint node not found\n"); + return -EINVAL; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &sensor->ep); + fwnode_handle_put(endpoint); + if (ret < 0) { + dev_err(dev, "parsing endpoint node failed\n"); + return ret; + } + + if (sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY) { + dev_err(dev, "invalid bus type, must be MIPI CSI2\n"); + ret = -EINVAL; + goto dt_ep_error; + } + + num_data_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes; + if (num_data_lanes != 2 && num_data_lanes != 4) { + dev_err(dev, "invalid num_data_lanes, must be 2 or 4. But it was %d\n", + num_data_lanes); + ret = -EINVAL; + goto dt_ep_error; + } + + if (!sensor->ep.nr_of_link_frequencies) { + dev_err(dev, "missing link frequencies property\n"); + ret = -EINVAL; + goto dt_ep_error; + } + + return 0; + +dt_ep_error: + v4l2_fwnode_endpoint_free(&sensor->ep); + return ret; +} + +static int mlx7502x_probe(struct i2c_client *client, const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct mlx7502x *sensor; + struct v4l2_subdev *sd; + int ret; + bool power_en; + + sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); + if (!sensor) + return -ENOMEM; + + sensor->dev = dev; + sd = &sensor->sd; + + ret = mlx7502x_parse_dt(sensor, dev); + if (ret < 0) + return ret; + + v4l2_i2c_subdev_init(sd, client, &mlx7502x_subdev_ops); + + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; + sensor->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad); + if (ret < 0) + goto error_ep; + + mutex_init(&sensor->lock); + + if (id->driver_data) { /* Chip type is already known */ + sensor->cur_desc = (void *)id->driver_data; + /* + * the sensor will not be powered on in this case + * CONFIG_PM is required to be able to use the driver then + */ + power_en = false; + } else { + power_en = true; + ret = mlx7502x_power_on(sensor); + if (ret < 0) + goto error_init; + + ret = mlx7502x_detect(sd); + if (ret < 0) + goto error_init; + + /* we need to write map into sensor, as we power on manually */ + ret = mlx7502x_init(sd); + if (ret < 0) + goto error_init; + + /* mark that device was power on */ + pm_runtime_set_active(dev); + } + + /* initial configurations and controls depends on sensor type */ + sensor->frame_interval.numerator = 1; + sensor->frame_interval.denominator = MLX7502X_DEFAULT_FRAME_RATE; + sensor->crop.top = 0; + sensor->crop.left = 0; + sensor->crop.width = sensor->cur_desc->width; + sensor->crop.height = sensor->cur_desc->height; + sensor->compose = sensor->crop; + sensor->binning_mode = &binning_mode[0]; + + ret = mlx7502x_ctrls_init(sensor); + if (ret < 0) + goto error_init; + + sensor->ctrl_handler.lock = &sensor->lock; + + pm_runtime_enable(dev); + /* increase counter wo calling power on */ + if (power_en) + pm_runtime_get_noresume(dev); + + ret = v4l2_async_register_subdev(sd); + if (ret < 0) + goto error_pm; + + /* configure to use autosuspend, delay 1s */ + pm_runtime_set_autosuspend_delay(dev, 1000); + pm_runtime_use_autosuspend(dev); + + if (power_en) { + /* autosuspend starting from now */ + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + } + + dev_dbg(dev, "Melexis ToF camera driver probed\n"); + + return 0; + +error_pm: + if (power_en) + pm_runtime_put_noidle(dev); + + pm_runtime_disable(dev); +error_init: + if (power_en) + mlx7502x_power_off(sensor); + + media_entity_cleanup(&sd->entity); + mutex_destroy(&sensor->lock); +error_ep: + v4l2_fwnode_endpoint_free(&sensor->ep); + return ret; +} + +static int mlx7502x_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct mlx7502x *sensor = to_mlx7502x(sd); + + gpiod_set_value_cansleep(sensor->leden, 0); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + mlx7502x_power_off(sensor); + pm_runtime_set_suspended(&client->dev); + + v4l2_fwnode_endpoint_free(&sensor->ep); + v4l2_async_unregister_subdev(&sensor->sd); + v4l2_ctrl_handler_free(&sensor->ctrl_handler); + + media_entity_cleanup(&sensor->sd.entity); + mutex_destroy(&sensor->lock); + return 0; +} + +static const struct dev_pm_ops mlx7502x_pm_ops = { + SET_RUNTIME_PM_OPS(mlx7502x_runtime_suspend, mlx7502x_runtime_resume, NULL) +}; + +static const struct of_device_id mlx7502x_of_match[] = { + { .compatible = "melexis,mlx7502x", .data = 0 }, /* auto-detection */ + { .compatible = "melexis,mlx75026", .data = &mlx75026 }, + { .compatible = "melexis,mlx75027", .data = &mlx75027 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mlx7502x_of_match); + +static const struct i2c_device_id mlx7502x_id[] = { + { "mlx7502x", (kernel_ulong_t)0 }, /* auto-detection */ + { "mlx75026", (kernel_ulong_t)&mlx75026 }, + { "mlx75027", (kernel_ulong_t)&mlx75027 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, mlx7502x_id); + +static struct i2c_driver mlx7502x_driver = { + .driver = { + .of_match_table = of_match_ptr(mlx7502x_of_match), + .name = "mlx7502x", + .pm = &mlx7502x_pm_ops, + }, + .probe = mlx7502x_probe, + .remove = mlx7502x_remove, + .id_table = mlx7502x_id, +}; + +module_i2c_driver(mlx7502x_driver); + +MODULE_AUTHOR("Andrii Kyselov <ays@xxxxxxxxxxx>"); +MODULE_AUTHOR("Volodymyr Kharuk <vkh@xxxxxxxxxxx>"); +MODULE_DESCRIPTION("A low-level driver for Melexis TOF sensors"); +MODULE_LICENSE("GPL"); -- BR, Volodymyr Kharuk
