Add a new driver for the Omnivision OV02C10 camera sensor. This is based on the out of tree driver by Hao Yao <hao.yao@xxxxxxxxx> from: https://github.com/intel/ipu6-drivers/blob/master/drivers/media/i2c/ov02c10.c This has been tested on a Dell XPS 9440 together with the IPU6 isys CSI driver and the libcamera software ISP code. Tested-by: Heimir Thor Sverrisson <heimir.sverrisson@xxxxxxxxx> Signed-off-by: Heimir Thor Sverrisson <heimir.sverrisson@xxxxxxxxx> --- drivers/media/i2c/Kconfig | 10 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/ov02c10.c | 1322 +++++++++++++++++++++++++++++++++++ 3 files changed, 1333 insertions(+) create mode 100644 drivers/media/i2c/ov02c10.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 8ba096b8ebca..9bca187d89af 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -355,6 +355,16 @@ config VIDEO_OV02A10 To compile this driver as a module, choose M here: the module will be called ov02a10. +config VIDEO_OV02C10 + tristate "OmniVision OV02C10 sensor support" + select V4L2_CCI_I2C + help + This is a Video4Linux2 sensor driver for the OmniVision + OV02C10 camera. + + To compile this driver as a module, choose M here: the + module will be called ov02c10. + config VIDEO_OV08D10 tristate "OmniVision OV08D10 sensor support" help diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index fbb988bd067a..5842346c220d 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -82,6 +82,7 @@ obj-$(CONFIG_VIDEO_MT9V111) += mt9v111.o obj-$(CONFIG_VIDEO_OG01A1B) += og01a1b.o obj-$(CONFIG_VIDEO_OV01A10) += ov01a10.o obj-$(CONFIG_VIDEO_OV02A10) += ov02a10.o +obj-$(CONFIG_VIDEO_OV02C10) += ov02c10.o obj-$(CONFIG_VIDEO_OV08D10) += ov08d10.o obj-$(CONFIG_VIDEO_OV08X40) += ov08x40.o obj-$(CONFIG_VIDEO_OV13858) += ov13858.o diff --git a/drivers/media/i2c/ov02c10.c b/drivers/media/i2c/ov02c10.c new file mode 100644 index 000000000000..03646cabed15 --- /dev/null +++ b/drivers/media/i2c/ov02c10.c @@ -0,0 +1,1322 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2022 Intel Corporation. + +#include <linux/acpi.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/version.h> +#include <media/v4l2-cci.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-fwnode.h> + +#define OV02C10_LINK_FREQ_400MHZ 400000000ULL +#define OV02C10_SCLK 80000000LL +#define OV02C10_MCLK 19200000 +#define OV02C10_DATA_LANES 1 +#define OV02C10_RGB_DEPTH 10 + +#define OV02C10_REG_CHIP_ID CCI_REG16(0x300a) +#define OV02C10_CHIP_ID 0x5602 + +#define OV02C10_REG_STREAM_CONTROL CCI_REG8(0x0100) + +/* vertical-timings from sensor */ +#define OV02C10_REG_VTS CCI_REG16(0x380e) +#define OV02C10_VTS_MAX 0xffff + +/* Exposure controls from sensor */ +#define OV02C10_REG_EXPOSURE CCI_REG16(0x3501) +#define OV02C10_EXPOSURE_MIN 4 +#define OV02C10_EXPOSURE_MAX_MARGIN 8 +#define OV02C10_EXPOSURE_STEP 1 + +/* Analog gain controls from sensor */ +#define OV02C10_REG_ANALOG_GAIN CCI_REG16(0x3508) +#define OV02C10_ANAL_GAIN_MIN 0x10 +#define OV02C10_ANAL_GAIN_MAX 0xf8 +#define OV02C10_ANAL_GAIN_STEP 1 +#define OV02C10_ANAL_GAIN_DEFAULT 0x10 + +/* Digital gain controls from sensor */ +#define OV02C10_REG_DIGITAL_GAIN CCI_REG24(0x350a) +#define OV02C10_DGTL_GAIN_MIN 0x0400 +#define OV02C10_DGTL_GAIN_MAX 0x3fff +#define OV02C10_DGTL_GAIN_STEP 1 +#define OV02C10_DGTL_GAIN_DEFAULT 0x0400 + +/* Rotate */ +#define OV02C10_ROTATE_CONTROL CCI_REG8(0x3820) +#define OV02C10_ISP_X_WIN_CONTROL CCI_REG16(0x3810) +#define OV02C10_ISP_Y_WIN_CONTROL CCI_REG16(0x3812) +#define OV02C10_CONFIG_ROTATE 0x18 + +/* Test Pattern Control */ +#define OV02C10_REG_TEST_PATTERN CCI_REG8(0x4503) +#define OV02C10_TEST_PATTERN_ENABLE BIT(7) + +struct ov02c10_mode { + /* Frame width in pixels */ + u32 width; + + /* Frame height in pixels */ + u32 height; + + /* Horizontal timining size */ + u32 hts; + + /* Default vertical timining size */ + u32 vts_def; + + /* Min vertical timining size */ + u32 vts_min; + + /* Link frequency needed for this resolution */ + u32 link_freq_index; + + /* MIPI lanes used */ + u8 mipi_lanes; + + /* Sensor register settings for this resolution */ + const struct reg_sequence *reg_sequence; + const int sequence_length; +}; + +static const struct reg_sequence sensor_1928x1092_1lane_30fps_setting[] = { + {0x0301, 0x08}, + {0x0303, 0x06}, + {0x0304, 0x01}, + {0x0305, 0xe0}, + {0x0313, 0x40}, + {0x031c, 0x4f}, + {0x301b, 0xd2}, + {0x3020, 0x97}, + {0x3022, 0x01}, + {0x3026, 0xb4}, + {0x3027, 0xe1}, + {0x303b, 0x00}, + {0x303c, 0x4f}, + {0x303d, 0xe6}, + {0x303e, 0x00}, + {0x303f, 0x03}, + {0x3021, 0x23}, + {0x3501, 0x04}, + {0x3502, 0x6c}, + {0x3504, 0x0c}, + {0x3507, 0x00}, + {0x3508, 0x08}, + {0x3509, 0x00}, + {0x350a, 0x01}, + {0x350b, 0x00}, + {0x350c, 0x41}, + {0x3600, 0x84}, + {0x3603, 0x08}, + {0x3610, 0x57}, + {0x3611, 0x1b}, + {0x3613, 0x78}, + {0x3623, 0x00}, + {0x3632, 0xa0}, + {0x3642, 0xe8}, + {0x364c, 0x70}, + {0x365f, 0x0f}, + {0x3708, 0x30}, + {0x3714, 0x24}, + {0x3725, 0x02}, + {0x3737, 0x08}, + {0x3739, 0x28}, + {0x3749, 0x32}, + {0x374a, 0x32}, + {0x374b, 0x32}, + {0x374c, 0x32}, + {0x374d, 0x81}, + {0x374e, 0x81}, + {0x374f, 0x81}, + {0x3752, 0x36}, + {0x3753, 0x36}, + {0x3754, 0x36}, + {0x3761, 0x00}, + {0x376c, 0x81}, + {0x3774, 0x18}, + {0x3776, 0x08}, + {0x377c, 0x81}, + {0x377d, 0x81}, + {0x377e, 0x81}, + {0x37a0, 0x44}, + {0x37a6, 0x44}, + {0x37aa, 0x0d}, + {0x37ae, 0x00}, + {0x37cb, 0x03}, + {0x37cc, 0x01}, + {0x37d8, 0x02}, + {0x37d9, 0x10}, + {0x37e1, 0x10}, + {0x37e2, 0x18}, + {0x37e3, 0x08}, + {0x37e4, 0x08}, + {0x37e5, 0x02}, + {0x37e6, 0x08}, + + /* 1928x1092 */ + {0x3800, 0x00}, + {0x3801, 0x00}, + {0x3802, 0x00}, + {0x3803, 0x00}, + {0x3804, 0x07}, + {0x3805, 0x8f}, + {0x3806, 0x04}, + {0x3807, 0x47}, + {0x3808, 0x07}, + {0x3809, 0x88}, + {0x380a, 0x04}, + {0x380b, 0x44}, + {0x380c, 0x08}, + {0x380d, 0xe8}, + {0x380e, 0x04}, + {0x380f, 0x8c}, + {0x3810, 0x00}, + {0x3811, 0x02}, + {0x3812, 0x00}, + {0x3813, 0x02}, + {0x3814, 0x01}, + {0x3815, 0x01}, + {0x3816, 0x01}, + {0x3817, 0x01}, + + {0x3820, 0xb0}, + {0x3821, 0x00}, + {0x3822, 0x80}, + {0x3823, 0x08}, + {0x3824, 0x00}, + {0x3825, 0x20}, + {0x3826, 0x00}, + {0x3827, 0x08}, + {0x382a, 0x00}, + {0x382b, 0x08}, + {0x382d, 0x00}, + {0x382e, 0x00}, + {0x382f, 0x23}, + {0x3834, 0x00}, + {0x3839, 0x00}, + {0x383a, 0xd1}, + {0x383e, 0x03}, + {0x393d, 0x29}, + {0x393f, 0x6e}, + {0x394b, 0x06}, + {0x394c, 0x06}, + {0x394d, 0x08}, + {0x394e, 0x0b}, + {0x394f, 0x01}, + {0x3950, 0x01}, + {0x3951, 0x01}, + {0x3952, 0x01}, + {0x3953, 0x01}, + {0x3954, 0x01}, + {0x3955, 0x01}, + {0x3956, 0x01}, + {0x3957, 0x0e}, + {0x3958, 0x08}, + {0x3959, 0x08}, + {0x395a, 0x08}, + {0x395b, 0x13}, + {0x395c, 0x09}, + {0x395d, 0x05}, + {0x395e, 0x02}, + {0x395f, 0x00}, + {0x395f, 0x00}, + {0x3960, 0x00}, + {0x3961, 0x00}, + {0x3962, 0x00}, + {0x3963, 0x00}, + {0x3964, 0x00}, + {0x3965, 0x00}, + {0x3966, 0x00}, + {0x3967, 0x00}, + {0x3968, 0x01}, + {0x3969, 0x01}, + {0x396a, 0x01}, + {0x396b, 0x01}, + {0x396c, 0x10}, + {0x396d, 0xf0}, + {0x396e, 0x11}, + {0x396f, 0x00}, + {0x3970, 0x37}, + {0x3971, 0x37}, + {0x3972, 0x37}, + {0x3973, 0x37}, + {0x3974, 0x00}, + {0x3975, 0x3c}, + {0x3976, 0x3c}, + {0x3977, 0x3c}, + {0x3978, 0x3c}, + {0x3c00, 0x0f}, + {0x3c20, 0x01}, + {0x3c21, 0x08}, + {0x3f00, 0x8b}, + {0x3f02, 0x0f}, + {0x4000, 0xc3}, + {0x4001, 0xe0}, + {0x4002, 0x00}, + {0x4003, 0x40}, + {0x4008, 0x04}, + {0x4009, 0x23}, + {0x400a, 0x04}, + {0x400b, 0x01}, + {0x4077, 0x06}, + {0x4078, 0x00}, + {0x4079, 0x1a}, + {0x407a, 0x7f}, + {0x407b, 0x01}, + {0x4080, 0x03}, + {0x4081, 0x84}, + {0x4308, 0x03}, + {0x4309, 0xff}, + {0x430d, 0x00}, + {0x4806, 0x00}, + {0x4813, 0x00}, + {0x4837, 0x10}, + {0x4857, 0x05}, + {0x4500, 0x07}, + {0x4501, 0x00}, + {0x4503, 0x00}, + {0x450a, 0x04}, + {0x450e, 0x00}, + {0x450f, 0x00}, + {0x4800, 0x24}, + {0x4900, 0x00}, + {0x4901, 0x00}, + {0x4902, 0x01}, + {0x5000, 0xf5}, + {0x5001, 0x50}, + {0x5006, 0x00}, + {0x5080, 0x40}, + {0x5181, 0x2b}, + {0x5202, 0xa3}, + {0x5206, 0x01}, + {0x5207, 0x00}, + {0x520a, 0x01}, + {0x520b, 0x00}, + {0x365d, 0x00}, + {0x4815, 0x40}, + {0x4816, 0x12}, + {0x4f00, 0x01}, + /* plls */ + {0x0303, 0x05}, + {0x0305, 0x90}, + {0x0316, 0x90}, + {0x3016, 0x12}, +}; + +static const struct reg_sequence sensor_1928x1092_2lane_30fps_setting[] = { + {0x0301, 0x08}, + {0x0303, 0x06}, + {0x0304, 0x01}, + {0x0305, 0xe0}, + {0x0313, 0x40}, + {0x031c, 0x4f}, + {0x301b, 0xf0}, + {0x3020, 0x97}, + {0x3022, 0x01}, + {0x3026, 0xb4}, + {0x3027, 0xf1}, + {0x303b, 0x00}, + {0x303c, 0x4f}, + {0x303d, 0xe6}, + {0x303e, 0x00}, + {0x303f, 0x03}, + {0x3021, 0x23}, + {0x3501, 0x04}, + {0x3502, 0x6c}, + {0x3504, 0x0c}, + {0x3507, 0x00}, + {0x3508, 0x08}, + {0x3509, 0x00}, + {0x350a, 0x01}, + {0x350b, 0x00}, + {0x350c, 0x41}, + {0x3600, 0x84}, + {0x3603, 0x08}, + {0x3610, 0x57}, + {0x3611, 0x1b}, + {0x3613, 0x78}, + {0x3623, 0x00}, + {0x3632, 0xa0}, + {0x3642, 0xe8}, + {0x364c, 0x70}, + {0x365f, 0x0f}, + {0x3708, 0x30}, + {0x3714, 0x24}, + {0x3725, 0x02}, + {0x3737, 0x08}, + {0x3739, 0x28}, + {0x3749, 0x32}, + {0x374a, 0x32}, + {0x374b, 0x32}, + {0x374c, 0x32}, + {0x374d, 0x81}, + {0x374e, 0x81}, + {0x374f, 0x81}, + {0x3752, 0x36}, + {0x3753, 0x36}, + {0x3754, 0x36}, + {0x3761, 0x00}, + {0x376c, 0x81}, + {0x3774, 0x18}, + {0x3776, 0x08}, + {0x377c, 0x81}, + {0x377d, 0x81}, + {0x377e, 0x81}, + {0x37a0, 0x44}, + {0x37a6, 0x44}, + {0x37aa, 0x0d}, + {0x37ae, 0x00}, + {0x37cb, 0x03}, + {0x37cc, 0x01}, + {0x37d8, 0x02}, + {0x37d9, 0x10}, + {0x37e1, 0x10}, + {0x37e2, 0x18}, + {0x37e3, 0x08}, + {0x37e4, 0x08}, + {0x37e5, 0x02}, + {0x37e6, 0x08}, + + /* 1928x1092 */ + {0x3800, 0x00}, + {0x3801, 0x00}, + {0x3802, 0x00}, + {0x3803, 0x00}, + {0x3804, 0x07}, + {0x3805, 0x8f}, + {0x3806, 0x04}, + {0x3807, 0x47}, + {0x3808, 0x07}, + {0x3809, 0x88}, + {0x380a, 0x04}, + {0x380b, 0x44}, + {0x380c, 0x04}, + {0x380d, 0x74}, + {0x380e, 0x09}, + {0x380f, 0x18}, + {0x3810, 0x00}, + {0x3811, 0x02}, + {0x3812, 0x00}, + {0x3813, 0x02}, + {0x3814, 0x01}, + {0x3815, 0x01}, + {0x3816, 0x01}, + {0x3817, 0x01}, + + {0x3820, 0xb0}, + {0x3821, 0x00}, + {0x3822, 0x80}, + {0x3823, 0x08}, + {0x3824, 0x00}, + {0x3825, 0x20}, + {0x3826, 0x00}, + {0x3827, 0x08}, + {0x382a, 0x00}, + {0x382b, 0x08}, + {0x382d, 0x00}, + {0x382e, 0x00}, + {0x382f, 0x23}, + {0x3834, 0x00}, + {0x3839, 0x00}, + {0x383a, 0xd1}, + {0x383e, 0x03}, + {0x393d, 0x29}, + {0x393f, 0x6e}, + {0x394b, 0x06}, + {0x394c, 0x06}, + {0x394d, 0x08}, + {0x394e, 0x0a}, + {0x394f, 0x01}, + {0x3950, 0x01}, + {0x3951, 0x01}, + {0x3952, 0x01}, + {0x3953, 0x01}, + {0x3954, 0x01}, + {0x3955, 0x01}, + {0x3956, 0x01}, + {0x3957, 0x0e}, + {0x3958, 0x08}, + {0x3959, 0x08}, + {0x395a, 0x08}, + {0x395b, 0x13}, + {0x395c, 0x09}, + {0x395d, 0x05}, + {0x395e, 0x02}, + {0x395f, 0x00}, + {0x395f, 0x00}, + {0x3960, 0x00}, + {0x3961, 0x00}, + {0x3962, 0x00}, + {0x3963, 0x00}, + {0x3964, 0x00}, + {0x3965, 0x00}, + {0x3966, 0x00}, + {0x3967, 0x00}, + {0x3968, 0x01}, + {0x3969, 0x01}, + {0x396a, 0x01}, + {0x396b, 0x01}, + {0x396c, 0x10}, + {0x396d, 0xf0}, + {0x396e, 0x11}, + {0x396f, 0x00}, + {0x3970, 0x37}, + {0x3971, 0x37}, + {0x3972, 0x37}, + {0x3973, 0x37}, + {0x3974, 0x00}, + {0x3975, 0x3c}, + {0x3976, 0x3c}, + {0x3977, 0x3c}, + {0x3978, 0x3c}, + {0x3c00, 0x0f}, + {0x3c20, 0x01}, + {0x3c21, 0x08}, + {0x3f00, 0x8b}, + {0x3f02, 0x0f}, + {0x4000, 0xc3}, + {0x4001, 0xe0}, + {0x4002, 0x00}, + {0x4003, 0x40}, + {0x4008, 0x04}, + {0x4009, 0x23}, + {0x400a, 0x04}, + {0x400b, 0x01}, + {0x4041, 0x20}, + {0x4077, 0x06}, + {0x4078, 0x00}, + {0x4079, 0x1a}, + {0x407a, 0x7f}, + {0x407b, 0x01}, + {0x4080, 0x03}, + {0x4081, 0x84}, + {0x4308, 0x03}, + {0x4309, 0xff}, + {0x430d, 0x00}, + {0x4806, 0x00}, + {0x4813, 0x00}, + {0x4837, 0x10}, + {0x4857, 0x05}, + {0x4884, 0x04}, + {0x4500, 0x07}, + {0x4501, 0x00}, + {0x4503, 0x00}, + {0x450a, 0x04}, + {0x450e, 0x00}, + {0x450f, 0x00}, + {0x4800, 0x64}, + {0x4900, 0x00}, + {0x4901, 0x00}, + {0x4902, 0x01}, + {0x4d00, 0x03}, + {0x4d01, 0xd8}, + {0x4d02, 0xba}, + {0x4d03, 0xa0}, + {0x4d04, 0xb7}, + {0x4d05, 0x34}, + {0x4d0d, 0x00}, + {0x5000, 0xfd}, + {0x5001, 0x50}, + {0x5006, 0x00}, + {0x5080, 0x40}, + {0x5181, 0x2b}, + {0x5202, 0xa3}, + {0x5206, 0x01}, + {0x5207, 0x00}, + {0x520a, 0x01}, + {0x520b, 0x00}, + {0x365d, 0x00}, + {0x4815, 0x40}, + {0x4816, 0x12}, + {0x481f, 0x30}, + {0x4f00, 0x01}, + /* plls */ + {0x0303, 0x05}, + {0x0305, 0x90}, + {0x0316, 0x90}, + {0x3016, 0x32}, +}; + +static const char * const ov02c10_test_pattern_menu[] = { + "Disabled", + "Color Bar", + "Top-Bottom Darker Color Bar", + "Right-Left Darker Color Bar", + "Color Bar type 4", +}; + +static const s64 link_freq_menu_items[] = { + OV02C10_LINK_FREQ_400MHZ, +}; + +static const struct ov02c10_mode supported_modes[] = { + { + .width = 1928, + .height = 1092, + .hts = 2280, + .vts_def = 1164, + .vts_min = 1164, + .mipi_lanes = 1, + .reg_sequence = sensor_1928x1092_1lane_30fps_setting, + .sequence_length = ARRAY_SIZE(sensor_1928x1092_1lane_30fps_setting), + }, + { + .width = 1928, + .height = 1092, + .hts = 1140, + .vts_def = 2328, + .vts_min = 2328, + .mipi_lanes = 2, + .reg_sequence = sensor_1928x1092_2lane_30fps_setting, + .sequence_length = ARRAY_SIZE(sensor_1928x1092_2lane_30fps_setting), + }, +}; + +struct ov02c10 { + struct v4l2_subdev sd; + struct media_pad pad; + struct v4l2_ctrl_handler ctrl_handler; + struct regmap *regmap; + + /* V4L2 Controls */ + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *vblank; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *exposure; + + struct clk *img_clk; + struct regulator *avdd; + struct gpio_desc *reset; + struct gpio_desc *handshake; + + /* Current mode */ + const struct ov02c10_mode *cur_mode; + + /* To serialize asynchronous callbacks */ + struct mutex mutex; + + /* MIPI lanes used */ + u8 mipi_lanes; + + /* Streaming on/off */ + bool streaming; +}; + +static inline struct ov02c10 *to_ov02c10(struct v4l2_subdev *subdev) +{ + return container_of(subdev, struct ov02c10, sd); +} + +static int ov02c10_test_pattern(struct ov02c10 *ov02c10, int pattern) +{ + int ret = 0; + + if (!pattern) + return cci_update_bits(ov02c10->regmap, OV02C10_REG_TEST_PATTERN, + BIT(7), 0, NULL); + + cci_update_bits(ov02c10->regmap, OV02C10_REG_TEST_PATTERN, + 0x03, pattern - 1, &ret); + if (ret) + return ret; + + cci_update_bits(ov02c10->regmap, OV02C10_REG_TEST_PATTERN, + BIT(7), OV02C10_TEST_PATTERN_ENABLE, &ret); + + return ret; +} + +static int ov02c10_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ov02c10 *ov02c10 = container_of(ctrl->handler, + struct ov02c10, ctrl_handler); + struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd); + s64 exposure_max; + int ret = 0; + + /* Propagate change of current control to all related controls */ + if (ctrl->id == V4L2_CID_VBLANK) { + /* Update max exposure while meeting expected vblanking */ + exposure_max = ov02c10->cur_mode->height + ctrl->val - + OV02C10_EXPOSURE_MAX_MARGIN; + __v4l2_ctrl_modify_range(ov02c10->exposure, + ov02c10->exposure->minimum, + exposure_max, ov02c10->exposure->step, + exposure_max); + } + + /* V4L2 controls values will be applied only when power is already up */ + if (!pm_runtime_get_if_in_use(&client->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_ANALOGUE_GAIN: + cci_write(ov02c10->regmap, OV02C10_REG_ANALOG_GAIN, + ctrl->val << 4, &ret); + break; + + case V4L2_CID_DIGITAL_GAIN: + cci_write(ov02c10->regmap, OV02C10_REG_DIGITAL_GAIN, + ctrl->val << 6, &ret); + break; + + case V4L2_CID_EXPOSURE: + cci_write(ov02c10->regmap, OV02C10_REG_EXPOSURE, + ctrl->val, &ret); + break; + + case V4L2_CID_VBLANK: + cci_write(ov02c10->regmap, OV02C10_REG_VTS, + ov02c10->cur_mode->height + ctrl->val, &ret); + break; + + case V4L2_CID_TEST_PATTERN: + ret = ov02c10_test_pattern(ov02c10, ctrl->val); + break; + + default: + ret = -EINVAL; + break; + } + + pm_runtime_put(&client->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops ov02c10_ctrl_ops = { + .s_ctrl = ov02c10_set_ctrl, +}; + +static int ov02c10_init_controls(struct ov02c10 *ov02c10) +{ + struct v4l2_ctrl_handler *ctrl_hdlr; + const struct ov02c10_mode *cur_mode; + s64 exposure_max, h_blank; + u32 vblank_min, vblank_max, vblank_default; + int size; + int ret = 0; + + ctrl_hdlr = &ov02c10->ctrl_handler; + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); + if (ret) + return ret; + + ctrl_hdlr->lock = &ov02c10->mutex; + cur_mode = ov02c10->cur_mode; + size = ARRAY_SIZE(link_freq_menu_items); + + ov02c10->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, + &ov02c10_ctrl_ops, + V4L2_CID_LINK_FREQ, + size - 1, 0, + link_freq_menu_items); + if (ov02c10->link_freq) + ov02c10->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + ov02c10->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, + V4L2_CID_PIXEL_RATE, 0, + OV02C10_SCLK, 1, OV02C10_SCLK); + + vblank_min = cur_mode->vts_min - cur_mode->height; + vblank_max = OV02C10_VTS_MAX - cur_mode->height; + vblank_default = cur_mode->vts_def - cur_mode->height; + ov02c10->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, + V4L2_CID_VBLANK, vblank_min, + vblank_max, 1, vblank_default); + + h_blank = cur_mode->hts - cur_mode->width; + ov02c10->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, + V4L2_CID_HBLANK, h_blank, h_blank, + 1, h_blank); + if (ov02c10->hblank) + ov02c10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, + OV02C10_ANAL_GAIN_MIN, OV02C10_ANAL_GAIN_MAX, + OV02C10_ANAL_GAIN_STEP, OV02C10_ANAL_GAIN_DEFAULT); + v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, V4L2_CID_DIGITAL_GAIN, + OV02C10_DGTL_GAIN_MIN, OV02C10_DGTL_GAIN_MAX, + OV02C10_DGTL_GAIN_STEP, OV02C10_DGTL_GAIN_DEFAULT); + exposure_max = cur_mode->vts_def - OV02C10_EXPOSURE_MAX_MARGIN; + ov02c10->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, + V4L2_CID_EXPOSURE, + OV02C10_EXPOSURE_MIN, + exposure_max, + OV02C10_EXPOSURE_STEP, + exposure_max); + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov02c10_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(ov02c10_test_pattern_menu) - 1, + 0, 0, ov02c10_test_pattern_menu); + if (ctrl_hdlr->error) + return ctrl_hdlr->error; + + ov02c10->sd.ctrl_handler = ctrl_hdlr; + + return 0; +} + +static void ov02c10_update_pad_format(const struct ov02c10_mode *mode, + struct v4l2_mbus_framefmt *fmt) +{ + fmt->width = mode->width; + fmt->height = mode->height; + fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; + fmt->field = V4L2_FIELD_NONE; +} + +static int ov02c10_start_streaming(struct ov02c10 *ov02c10) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd); + const struct reg_sequence *reg_sequence; + int sequence_length; + int ret = 0; + + reg_sequence = ov02c10->cur_mode->reg_sequence; + sequence_length = ov02c10->cur_mode->sequence_length; + ret = regmap_multi_reg_write(ov02c10->regmap, + reg_sequence, sequence_length); + if (ret) { + dev_err(&client->dev, "failed to set mode"); + return ret; + } + + ret = __v4l2_ctrl_handler_setup(ov02c10->sd.ctrl_handler); + if (ret) + return ret; + + ret = cci_write(ov02c10->regmap, OV02C10_REG_STREAM_CONTROL, 1, NULL); + if (ret) + dev_err(&client->dev, "failed to start streaming"); + + return ret; +} + +static void ov02c10_stop_streaming(struct ov02c10 *ov02c10) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd); + int ret = 0; + + ret = cci_write(ov02c10->regmap, OV02C10_REG_STREAM_CONTROL, 0, NULL); + if (ret) + dev_err(&client->dev, "failed to stop streaming"); +} + +static int ov02c10_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct ov02c10 *ov02c10 = to_ov02c10(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret = 0; + + if (ov02c10->streaming == enable) + return 0; + + mutex_lock(&ov02c10->mutex); + if (enable) { + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + mutex_unlock(&ov02c10->mutex); + return ret; + } + + ret = ov02c10_start_streaming(ov02c10); + if (ret) { + enable = 0; + ov02c10_stop_streaming(ov02c10); + pm_runtime_put(&client->dev); + } + } else { + ov02c10_stop_streaming(ov02c10); + pm_runtime_put(&client->dev); + } + + ov02c10->streaming = enable; + mutex_unlock(&ov02c10->mutex); + + return ret; +} + +/* This function tries to get power control resources */ +static int ov02c10_get_pm_resources(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct ov02c10 *ov02c10 = to_ov02c10(sd); + int ret; + + ov02c10->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ov02c10->reset)) + return dev_err_probe(dev, PTR_ERR(ov02c10->reset), + "failed to get reset gpio\n"); + + ov02c10->handshake = devm_gpiod_get_optional(dev, "handshake", + GPIOD_OUT_LOW); + if (IS_ERR(ov02c10->handshake)) + return dev_err_probe(dev, PTR_ERR(ov02c10->handshake), + "failed to get handshake gpio\n"); + + ov02c10->img_clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(ov02c10->img_clk)) + return dev_err_probe(dev, PTR_ERR(ov02c10->img_clk), + "failed to get imaging clock\n"); + + ov02c10->avdd = devm_regulator_get_optional(dev, "avdd"); + if (IS_ERR(ov02c10->avdd)) { + ret = PTR_ERR(ov02c10->avdd); + ov02c10->avdd = NULL; + if (ret != -ENODEV) + return dev_err_probe(dev, ret, + "failed to get avdd regulator\n"); + } + + return 0; +} + +static int ov02c10_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct ov02c10 *ov02c10 = to_ov02c10(sd); + int ret = 0; + + gpiod_set_value_cansleep(ov02c10->reset, 1); + gpiod_set_value_cansleep(ov02c10->handshake, 0); + + if (ov02c10->avdd) + ret = regulator_disable(ov02c10->avdd); + + clk_disable_unprepare(ov02c10->img_clk); + + return ret; +} + +static int ov02c10_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct ov02c10 *ov02c10 = to_ov02c10(sd); + int ret; + + ret = clk_prepare_enable(ov02c10->img_clk); + if (ret < 0) { + dev_err(dev, "failed to enable imaging clock: %d", ret); + return ret; + } + + if (ov02c10->avdd) { + ret = regulator_enable(ov02c10->avdd); + if (ret < 0) { + dev_err(dev, "failed to enable avdd: %d", ret); + clk_disable_unprepare(ov02c10->img_clk); + return ret; + } + } + gpiod_set_value_cansleep(ov02c10->handshake, 1); + gpiod_set_value_cansleep(ov02c10->reset, 0); + + /* Lattice MIPI aggregator with some version FW needs longer delay + * after handshake triggered. We set 25ms as a safe value and wait + * for a stable version FW. + */ + msleep_interruptible(25); + + return ret; +} + +static int __maybe_unused ov02c10_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov02c10 *ov02c10 = to_ov02c10(sd); + + mutex_lock(&ov02c10->mutex); + if (ov02c10->streaming) + ov02c10_stop_streaming(ov02c10); + + mutex_unlock(&ov02c10->mutex); + + return 0; +} + +static int __maybe_unused ov02c10_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov02c10 *ov02c10 = to_ov02c10(sd); + int ret = 0; + + mutex_lock(&ov02c10->mutex); + if (!ov02c10->streaming) + goto exit; + + ret = ov02c10_start_streaming(ov02c10); + if (ret) { + ov02c10->streaming = false; + ov02c10_stop_streaming(ov02c10); + } + +exit: + mutex_unlock(&ov02c10->mutex); + return ret; +} + +static int ov02c10_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct ov02c10 *ov02c10 = to_ov02c10(sd); + const struct ov02c10_mode *mode; + s32 vblank_def, h_blank; + + if (ov02c10->mipi_lanes == 1) + mode = &supported_modes[0]; + else + mode = &supported_modes[1]; + + mutex_lock(&ov02c10->mutex); + ov02c10_update_pad_format(mode, &fmt->format); + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + *v4l2_subdev_state_get_format(sd_state, fmt->pad) = fmt->format; + } else { + ov02c10->cur_mode = mode; + __v4l2_ctrl_s_ctrl(ov02c10->link_freq, mode->link_freq_index); + __v4l2_ctrl_s_ctrl_int64(ov02c10->pixel_rate, OV02C10_SCLK); + + /* Update limits and set FPS to default */ + vblank_def = mode->vts_def - mode->height; + __v4l2_ctrl_modify_range(ov02c10->vblank, + mode->vts_min - mode->height, + OV02C10_VTS_MAX - mode->height, 1, + vblank_def); + __v4l2_ctrl_s_ctrl(ov02c10->vblank, vblank_def); + h_blank = mode->hts - mode->width; + __v4l2_ctrl_modify_range(ov02c10->hblank, h_blank, h_blank, 1, + h_blank); + } + mutex_unlock(&ov02c10->mutex); + + return 0; +} + +static int ov02c10_get_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct ov02c10 *ov02c10 = to_ov02c10(sd); + + mutex_lock(&ov02c10->mutex); + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + fmt->format = *v4l2_subdev_state_get_format(sd_state, fmt->pad); + else + ov02c10_update_pad_format(ov02c10->cur_mode, &fmt->format); + + mutex_unlock(&ov02c10->mutex); + + return 0; +} + +static int ov02c10_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_SGRBG10_1X10; + + return 0; +} + +static int ov02c10_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; + + if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10) + return -EINVAL; + + fse->min_width = supported_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = supported_modes[fse->index].height; + fse->max_height = fse->min_height; + + return 0; +} + +static int ov02c10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct ov02c10 *ov02c10 = to_ov02c10(sd); + + mutex_lock(&ov02c10->mutex); + ov02c10_update_pad_format(&supported_modes[0], + v4l2_subdev_state_get_format(fh->state, 0)); + mutex_unlock(&ov02c10->mutex); + return 0; +} + +static const struct v4l2_subdev_video_ops ov02c10_video_ops = { + .s_stream = ov02c10_set_stream, +}; + +static const struct v4l2_subdev_pad_ops ov02c10_pad_ops = { + .set_fmt = ov02c10_set_format, + .get_fmt = ov02c10_get_format, + .enum_mbus_code = ov02c10_enum_mbus_code, + .enum_frame_size = ov02c10_enum_frame_size, +}; + +static const struct v4l2_subdev_ops ov02c10_subdev_ops = { + .video = &ov02c10_video_ops, + .pad = &ov02c10_pad_ops, +}; + +static const struct media_entity_operations ov02c10_subdev_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +static const struct v4l2_subdev_internal_ops ov02c10_internal_ops = { + .open = ov02c10_open, +}; + +static int ov02c10_read_mipi_lanes(struct ov02c10 *ov02c10, struct device *dev) +{ + struct v4l2_fwnode_endpoint bus_cfg = { + .bus_type = V4L2_MBUS_CSI2_DPHY + }; + struct fwnode_handle *ep; + struct fwnode_handle *fwnode = dev_fwnode(dev); + int ret = 0; + + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); + if (!ep) + return -ENXIO; + + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + fwnode_handle_put(ep); + if (ret) + return ret; + + if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2 && + bus_cfg.bus.mipi_csi2.num_data_lanes != 4) { + dev_err(dev, "number of CSI2 data lanes %d is not supported", + bus_cfg.bus.mipi_csi2.num_data_lanes); + return(-EINVAL); + } + ov02c10->mipi_lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; + return ret; +} + +static int ov02c10_identify_module(struct ov02c10 *ov02c10) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd); + u64 chip_id; + u32 ret = 0; + + ov02c10->regmap = devm_cci_regmap_init_i2c(client, 16); + cci_read(ov02c10->regmap, OV02C10_REG_CHIP_ID, &chip_id, &ret); + if (ret) + return ret; + + if (chip_id != OV02C10_CHIP_ID) { + dev_err(&client->dev, "chip id mismatch: %x!=%llx", + OV02C10_CHIP_ID, chip_id); + return -ENXIO; + } + + return 0; +} + +static int ov02c10_check_hwcfg(struct device *dev) +{ + struct v4l2_fwnode_endpoint bus_cfg = { + .bus_type = V4L2_MBUS_CSI2_DPHY + }; + struct fwnode_handle *ep; + struct fwnode_handle *fwnode = dev_fwnode(dev); + unsigned int i, j; + int ret; + u32 ext_clk; + + if (!fwnode) + return -ENXIO; + + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); + if (!ep) + return -EPROBE_DEFER; + + ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency", + &ext_clk); + if (ret) { + dev_err(dev, "can't get clock frequency"); + return ret; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + fwnode_handle_put(ep); + if (ret) + return ret; + + if (!bus_cfg.nr_of_link_frequencies) { + dev_err(dev, "no link frequencies defined"); + ret = -EINVAL; + goto out_err; + } + + for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) { + for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) { + if (link_freq_menu_items[i] == + bus_cfg.link_frequencies[j]) + break; + } + + if (j == bus_cfg.nr_of_link_frequencies) { + dev_err(dev, "no link frequency %lld supported", + link_freq_menu_items[i]); + ret = -EINVAL; + goto out_err; + } + } + +out_err: + v4l2_fwnode_endpoint_free(&bus_cfg); + + return ret; +} + +static void ov02c10_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov02c10 *ov02c10 = to_ov02c10(sd); + + v4l2_async_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(sd->ctrl_handler); + pm_runtime_disable(&client->dev); + mutex_destroy(&ov02c10->mutex); +} + +static int ov02c10_probe(struct i2c_client *client) +{ + struct ov02c10 *ov02c10; + int ret = 0; + + /* Check HW config */ + ret = ov02c10_check_hwcfg(&client->dev); + if (ret) { + dev_err(&client->dev, "failed to check hwcfg: %d", ret); + return ret; + } + + ov02c10 = devm_kzalloc(&client->dev, sizeof(*ov02c10), GFP_KERNEL); + if (!ov02c10) + return -ENOMEM; + + v4l2_i2c_subdev_init(&ov02c10->sd, client, &ov02c10_subdev_ops); + ov02c10_get_pm_resources(&client->dev); + + ret = ov02c10_power_on(&client->dev); + if (ret) { + dev_err_probe(&client->dev, ret, "failed to power on\n"); + return ret; + } + + ret = ov02c10_identify_module(ov02c10); + if (ret) { + dev_err(&client->dev, "failed to find sensor: %d", ret); + goto probe_error_ret; + } + + ret = ov02c10_read_mipi_lanes(ov02c10, &client->dev); + if (ret) + goto probe_error_ret; + + mutex_init(&ov02c10->mutex); + ov02c10->cur_mode = &supported_modes[0]; + if (ov02c10->mipi_lanes == 2) + ov02c10->cur_mode = &supported_modes[1]; + ret = ov02c10_init_controls(ov02c10); + if (ret) { + dev_err(&client->dev, "failed to init controls: %d", ret); + goto probe_error_v4l2_ctrl_handler_free; + } + + ov02c10->sd.internal_ops = &ov02c10_internal_ops; + ov02c10->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + ov02c10->sd.entity.ops = &ov02c10_subdev_entity_ops; + ov02c10->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + ov02c10->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&ov02c10->sd.entity, 1, &ov02c10->pad); + if (ret) { + dev_err(&client->dev, "failed to init entity pads: %d", ret); + goto probe_error_v4l2_ctrl_handler_free; + } + + ret = v4l2_async_register_subdev_sensor(&ov02c10->sd); + if (ret < 0) { + dev_err(&client->dev, "failed to register V4L2 subdev: %d", + ret); + goto probe_error_media_entity_cleanup; + } + + /* + * Device is already turned on by i2c-core with ACPI domain PM. + * Enable runtime PM and turn off the device. + */ + pm_runtime_set_active(&client->dev); + pm_runtime_enable(&client->dev); + pm_runtime_idle(&client->dev); + + return 0; + +probe_error_media_entity_cleanup: + media_entity_cleanup(&ov02c10->sd.entity); + +probe_error_v4l2_ctrl_handler_free: + v4l2_ctrl_handler_free(ov02c10->sd.ctrl_handler); + mutex_destroy(&ov02c10->mutex); + +probe_error_ret: + ov02c10_power_off(&client->dev); + + return ret; +} + +static const struct dev_pm_ops ov02c10_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ov02c10_suspend, ov02c10_resume) + SET_RUNTIME_PM_OPS(ov02c10_power_off, ov02c10_power_on, NULL) +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id ov02c10_acpi_ids[] = { + {"OVTI02C1"}, + {} +}; + +MODULE_DEVICE_TABLE(acpi, ov02c10_acpi_ids); +#endif + +static struct i2c_driver ov02c10_i2c_driver = { + .driver = { + .name = "ov02c10", + .pm = &ov02c10_pm_ops, + .acpi_match_table = ACPI_PTR(ov02c10_acpi_ids), + }, + .probe = ov02c10_probe, + .remove = ov02c10_remove, +}; + +module_i2c_driver(ov02c10_i2c_driver); + +MODULE_AUTHOR("Hao Yao <hao.yao@xxxxxxxxx>"); +MODULE_DESCRIPTION("OmniVision OV02C10 sensor driver"); +MODULE_LICENSE("GPL"); -- 2.47.1
