// SPDX-License-Identifier: GPL-2.0 /* * ov8856 camera driver * Copyright (C) 2021 Rockchip Electronics Co., Ltd. * * v0.1.0x00 : first driver version. * V0.0X01.0X01 fix bus format. * V0.0X01.0X02 support mirror & flip ctrl. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "otp_eeprom.h" #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x02) #ifndef V4L2_CID_DIGITAL_GAIN #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN #endif /*MIPI_FREQ * 2 * lane / bit*/ #define OV8856_PIXEL_RATE (360000000LL * 2LL * 4LL / 10LL) #define MIPI_FREQ 360000000U #define OV8856_XVCLK_FREQ 24000000 #define CHIP_ID 0x00885a #define OV8856_REG_CHIP_ID 0x300a #define OV8856_REG_CTRL_MODE 0x0100 #define OV8856_MODE_SW_STANDBY 0x0 #define OV8856_MODE_STREAMING 0x1 #define OV8856_REG_EXPOSURE 0x3500 #define OV8856_EXPOSURE_MIN 6 #define OV8856_EXPOSURE_STEP 1 #define OV8856_VTS_MAX 0x7fff #define OV8856_REG_GAIN_H 0x3508 #define OV8856_REG_GAIN_L 0x3509 #define OV8856_GAIN_H_MASK 0x1f #define OV8856_GAIN_H_SHIFT 8 #define OV8856_GAIN_L_MASK 0xff #define OV8856_GAIN_MIN 0x80 #define OV8856_GAIN_MAX 0x7c0 #define OV8856_GAIN_STEP 1 #define OV8856_GAIN_DEFAULT 0x80 #define OV8856_REG_TEST_PATTERN 0x5e00 #define OV8856_TEST_PATTERN_ENABLE 0x80 #define OV8856_TEST_PATTERN_DISABLE 0x0 #define OV8856_REG_VTS 0x380e #define OV8856_MIRROR_REG 0x3820 #define OV8856_FLIP_REG 0x3821 #define MIRROR_BIT_MASK 0x06 #define FLIP_BIT_MASK 0x06 #define OV8856_ISPCTRL1_REG 0x5001 #define OV8856_ISPCTRL2E_REG 0x502e #define ISPCTRL1_BIT_MASK BIT(2) #define ISPCTRL2E_BIT_MASK (BIT(1)|BIT(0)) #define REG_NULL 0xFFFF #define OV8856_REG_VALUE_08BIT 1 #define OV8856_REG_VALUE_16BIT 2 #define OV8856_REG_VALUE_24BIT 3 #define OV8856_LANES 4 #define OV8856_BITS_PER_SAMPLE 10 #define OV8856_CHIP_REVISION_REG 0x302A #define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" #define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" #define OV8856_NAME "ov8856" #define OV8856_MEDIA_BUS_FMT MEDIA_BUS_FMT_SBGGR10_1X10 #define MIRROR 1 static const struct regval *ov8856_global_regs; static const char * const ov8856_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define OV8856_NUM_SUPPLIES ARRAY_SIZE(ov8856_supply_names) struct regval { u16 addr; u8 val; }; struct ov8856_mode { u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; const struct regval *reg_list; }; struct ov8856 { struct i2c_client *client; struct clk *xvclk; struct gpio_desc *power_gpio; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[OV8856_NUM_SUPPLIES]; struct pinctrl *pinctrl; struct pinctrl_state *pins_default; struct pinctrl_state *pins_sleep; struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *exposure; struct v4l2_ctrl *anal_gain; struct v4l2_ctrl *digi_gain; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *test_pattern; struct v4l2_ctrl *h_flip; struct v4l2_ctrl *v_flip; struct mutex mutex; bool streaming; const struct ov8856_mode *cur_mode; unsigned int lane_num; unsigned int cfg_num; unsigned int pixel_rate; bool power_on; struct otp_info *otp; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; struct rkmodule_inf module_inf; struct rkmodule_awb_cfg awb_cfg; struct rkmodule_lsc_cfg lsc_cfg; }; #define to_ov8856(sd) container_of(sd, struct ov8856, subdev) /* * Xclk 24Mhz */ static const struct regval ov8856_global_regs_2lane[] = { {0x0103, 0x01}, {0x0302, 0x3c}, {0x0303, 0x01}, {0x031e, 0x0c}, {0x3000, 0x00}, {0x300e, 0x00}, {0x3010, 0x00}, {0x3015, 0x84}, {0x3018, 0x32}, {0x3033, 0x24}, {0x3500, 0x00}, {0x3501, 0x4c}, {0x3502, 0xe0}, {0x3503, 0x08}, {0x3505, 0x83}, {0x3508, 0x01}, {0x3509, 0x80}, {0x350c, 0x00}, {0x350d, 0x80}, {0x350e, 0x04}, {0x350f, 0x00}, {0x3510, 0x00}, {0x3511, 0x02}, {0x3512, 0x00}, {0x3600, 0x72}, {0x3601, 0x40}, {0x3602, 0x30}, {0x3610, 0xc5}, {0x3611, 0x58}, {0x3612, 0x5c}, {0x3613, 0x5a}, {0x3614, 0x60}, {0x3628, 0xff}, {0x3629, 0xff}, {0x362a, 0xff}, {0x3633, 0x10}, {0x3634, 0x10}, {0x3635, 0x10}, {0x3636, 0x10}, {0x3663, 0x08}, {0x3669, 0x34}, {0x366e, 0x08}, {0x3706, 0x86}, {0x370b, 0x7e}, {0x3714, 0x27}, {0x3730, 0x12}, {0x3733, 0x10}, {0x3764, 0x00}, {0x3765, 0x00}, {0x3769, 0x62}, {0x376a, 0x2a}, {0x3780, 0x00}, {0x3781, 0x24}, {0x3782, 0x00}, {0x3783, 0x23}, {0x3798, 0x2f}, {0x37a1, 0x60}, {0x37a8, 0x6a}, {0x37ab, 0x3f}, {0x37c2, 0x14}, {0x37c3, 0xf1}, {0x37c9, 0x80}, {0x37cb, 0x03}, {0x37cc, 0x0a}, {0x37cd, 0x16}, {0x37ce, 0x1f}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x0c}, {0x3804, 0x0c}, {0x3805, 0xdf}, {0x3806, 0x09}, {0x3807, 0xa3}, {0x3808, 0x06}, {0x3809, 0x60}, {0x380a, 0x04}, {0x380b, 0xc8}, {0x380c, 0x0e}, {0x380d, 0xa0}, {0x380e, 0x04}, {0x380f, 0xde}, {0x3810, 0x00}, {0x3811, 0x08}, {0x3812, 0x00}, {0x3813, 0x02}, {0x3814, 0x03}, {0x3815, 0x01}, {0x3816, 0x00}, {0x3817, 0x00}, {0x3818, 0x00}, {0x3819, 0x00}, {0x382a, 0x03}, {0x382b, 0x01}, {0x3830, 0x06}, {0x3836, 0x02}, {0x3862, 0x04}, {0x3863, 0x08}, {0x3cc0, 0x33}, {0x3d85, 0x17}, {0x3d8c, 0x73}, {0x3d8d, 0xde}, {0x4001, 0xe0}, {0x4003, 0x40}, {0x4008, 0x00}, {0x4009, 0x05}, {0x400f, 0x80}, {0x4010, 0xf0}, {0x4011, 0xff}, {0x4012, 0x02}, {0x4013, 0x01}, {0x4014, 0x01}, {0x4015, 0x01}, {0x4042, 0x00}, {0x4043, 0x80}, {0x4044, 0x00}, {0x4045, 0x80}, {0x4046, 0x00}, {0x4047, 0x80}, {0x4048, 0x00}, {0x4049, 0x80}, {0x4041, 0x03}, {0x404c, 0x20}, {0x404d, 0x00}, {0x404e, 0x20}, {0x4203, 0x80}, {0x4307, 0x30}, {0x4317, 0x00}, {0x4503, 0x08}, {0x4601, 0x80}, {0x4816, 0x53}, {0x481b, 0x58}, {0x481f, 0x27}, {0x4837, 0x16}, {0x5000, 0x77}, {0x5030, 0x41}, {0x5795, 0x00}, {0x5796, 0x10}, {0x5797, 0x10}, {0x5798, 0x73}, {0x5799, 0x73}, {0x579a, 0x00}, {0x579b, 0x28}, {0x579c, 0x00}, {0x579d, 0x16}, {0x579e, 0x06}, {0x579f, 0x20}, {0x57a0, 0x04}, {0x57a1, 0xa0}, {0x5780, 0x14}, {0x5781, 0x0f}, {0x5782, 0x44}, {0x5783, 0x02}, {0x5784, 0x01}, {0x5785, 0x01}, {0x5786, 0x00}, {0x5787, 0x04}, {0x5788, 0x02}, {0x5789, 0x0f}, {0x578a, 0xfd}, {0x578b, 0xf5}, {0x578c, 0xf5}, {0x578d, 0x03}, {0x578e, 0x08}, {0x578f, 0x0c}, {0x5790, 0x08}, {0x5791, 0x04}, {0x5792, 0x00}, {0x5793, 0x52}, {0x5794, 0xa3}, {0x5a08, 0x02}, {0x5b00, 0x02}, {0x5b01, 0x10}, {0x5b02, 0x03}, {0x5b03, 0xcf}, {0x5b05, 0x6c}, {0x5e00, 0x00}, {0x3820, 0x90}, {0x3821, 0x67}, {0x502e, 0x03}, {0x5001, 0x0a}, {0x5004, 0x04}, {0x376b, 0x30}, //{0x0100, 0x01}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz * max_framerate 30fps * mipi_datarate per lane 720Mbps */ static const struct regval ov8856_1632x1224_30fps_regs_2lane[] = { {0x0100, 0x00}, {0x0302, 0x3c}, {0x0303, 0x01}, {0x3501, 0x4c}, {0x3502, 0xe0}, {0x366e, 0x08}, {0x3714, 0x27}, {0x37c2, 0x14}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x0c}, {0x3804, 0x0c}, {0x3805, 0xdf}, {0x3806, 0x09}, {0x3807, 0xa3}, {0x3808, 0x06}, {0x3809, 0x60}, {0x380a, 0x04}, {0x380b, 0xc8}, {0x380c, 0x0e}, {0x380d, 0xa0}, {0x380e, 0x04}, {0x380f, 0xde}, {0x3810, 0x00}, {0x3811, 0x02}, {0x3812, 0x00}, {0x3813, 0x02}, {0x3814, 0x03}, {0x382a, 0x03}, {0x4009, 0x05}, {0x4837, 0x16}, {0x4601, 0x80}, {0x5795, 0x00}, {0x5796, 0x10}, {0x5797, 0x10}, {0x5798, 0x73}, {0x5799, 0x73}, {0x579a, 0x00}, {0x579b, 0x28}, {0x579c, 0x00}, {0x579d, 0x16}, {0x579f, 0x20}, {0x57a0, 0x04}, {0x57a1, 0xa0}, {0x3820, 0x90}, {0x3821, 0x67}, {0x502e, 0x03}, {0x5001, 0x0a}, {0x5004, 0x04}, {0x376b, 0x30}, //{0x0100, 0x01}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz * max_framerate 30fps * mipi_datarate per lane 720Mbps */ static const struct regval ov8856_3264x2448_30fps_regs_2lane[] = { {0x0100, 0x00}, {0x0302, 0x35}, {0x0303, 0x00}, {0x3501, 0x9a}, {0x3502, 0x20}, {0x366e, 0x10}, {0x3714, 0x23}, {0x37c2, 0x04}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x0c}, {0x3804, 0x0c}, {0x3805, 0xdf}, {0x3806, 0x09}, {0x3807, 0xa3}, {0x3808, 0x0c}, {0x3809, 0xc0}, {0x380a, 0x09}, {0x380b, 0x90}, {0x380c, 0x07}, {0x380d, 0x8c}, {0x380e, 0x09}, {0x380f, 0xb2}, {0x3810, 0x00}, {0x3811, 0x04}, {0x3812, 0x00}, {0x3813, 0x02}, {0x3814, 0x01}, {0x382a, 0x01}, {0x4009, 0x0b}, {0x4837, 0x0c}, {0x4601, 0x80}, {0x5795, 0x02}, {0x5796, 0x20}, {0x5797, 0x20}, {0x5798, 0xd5}, {0x5799, 0xd5}, {0x579a, 0x00}, {0x579b, 0x50}, {0x579c, 0x00}, {0x579d, 0x2c}, {0x579f, 0x40}, {0x57a0, 0x09}, {0x57a1, 0x40}, {0x3820, 0x80}, {0x3821, 0x46}, {0x502e, 0x03}, {0x5001, 0x0a}, {0x5004, 0x04}, {0x376b, 0x30}, {0x0100, 0x01}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz */ static const struct regval ov8856_global_regs_4lane[] = { {0x0103, 0x01}, {0x0302, 0x3c}, {0x0303, 0x01}, {0x031e, 0x0c}, {0x3000, 0x00}, {0x300e, 0x00}, {0x3010, 0x00}, {0x3015, 0x84}, {0x3018, 0x72}, {0x3033, 0x24}, {0x3500, 0x00}, {0x3501, 0x4c}, {0x3502, 0xe0}, {0x3503, 0x08}, {0x3505, 0x83}, {0x3508, 0x01}, {0x3509, 0x80}, {0x350c, 0x00}, {0x350d, 0x80}, {0x350e, 0x04}, {0x350f, 0x00}, {0x3510, 0x00}, {0x3511, 0x02}, {0x3512, 0x00}, {0x3600, 0x72}, {0x3601, 0x40}, {0x3602, 0x30}, {0x3610, 0xc5}, {0x3611, 0x58}, {0x3612, 0x5c}, {0x3613, 0x5a}, {0x3614, 0x60}, {0x3628, 0xff}, {0x3629, 0xff}, {0x362a, 0xff}, {0x3633, 0x10}, {0x3634, 0x10}, {0x3635, 0x10}, {0x3636, 0x10}, {0x3663, 0x08}, {0x3669, 0x34}, {0x366e, 0x08}, {0x3706, 0x86}, {0x370b, 0x7e}, {0x3714, 0x27}, {0x3730, 0x12}, {0x3733, 0x10}, {0x3764, 0x00}, {0x3765, 0x00}, {0x3769, 0x62}, {0x376a, 0x2a}, {0x3780, 0x00}, {0x3781, 0x24}, {0x3782, 0x00}, {0x3783, 0x23}, {0x3798, 0x2f}, {0x37a1, 0x60}, {0x37a8, 0x6a}, {0x37ab, 0x3f}, {0x37c2, 0x14}, {0x37c3, 0xf1}, {0x37c9, 0x80}, {0x37cb, 0x03}, {0x37cc, 0x0a}, {0x37cd, 0x16}, {0x37ce, 0x1f}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x0c}, {0x3804, 0x0c}, {0x3805, 0xdf}, {0x3806, 0x09}, {0x3807, 0xa3}, {0x3808, 0x06}, {0x3809, 0x60}, {0x380a, 0x04}, {0x380b, 0xc8}, {0x380c, 0x07}, {0x380d, 0x8c}, {0x380e, 0x09}, {0x380f, 0xb2}, {0x3810, 0x00}, {0x3811, 0x08}, {0x3812, 0x00}, {0x3813, 0x02}, {0x3814, 0x03}, {0x3815, 0x01}, {0x3816, 0x00}, {0x3817, 0x00}, {0x3818, 0x00}, {0x3819, 0x00}, {0x382a, 0x03}, {0x382b, 0x01}, {0x3830, 0x06}, {0x3836, 0x02}, {0x3862, 0x04}, {0x3863, 0x08}, {0x3cc0, 0x33}, {0x3d85, 0x17}, {0x3d8c, 0x73}, {0x3d8d, 0xde}, {0x4001, 0xe0}, {0x4003, 0x40}, {0x4008, 0x00}, {0x4009, 0x05}, {0x400f, 0x80}, {0x4010, 0xf0}, {0x4011, 0xff}, {0x4012, 0x02}, {0x4013, 0x01}, {0x4014, 0x01}, {0x4015, 0x01}, {0x4042, 0x00}, {0x4043, 0x80}, {0x4044, 0x00}, {0x4045, 0x80}, {0x4046, 0x00}, {0x4047, 0x80}, {0x4048, 0x00}, {0x4049, 0x80}, {0x4041, 0x03}, {0x404c, 0x20}, {0x404d, 0x00}, {0x404e, 0x20}, {0x4203, 0x80}, {0x4307, 0x30}, {0x4317, 0x00}, {0x4503, 0x08}, {0x4601, 0x80}, {0x4816, 0x53}, {0x481b, 0x58}, {0x481f, 0x27}, {0x4837, 0x16}, {0x5000, 0x77}, {0x5030, 0x41}, {0x5795, 0x00}, {0x5796, 0x10}, {0x5797, 0x10}, {0x5798, 0x73}, {0x5799, 0x73}, {0x579a, 0x00}, {0x579b, 0x28}, {0x579c, 0x00}, {0x579d, 0x16}, {0x579e, 0x06}, {0x579f, 0x20}, {0x57a0, 0x04}, {0x57a1, 0xa0}, {0x5780, 0x14}, {0x5781, 0x0f}, {0x5782, 0x44}, {0x5783, 0x02}, {0x5784, 0x01}, {0x5785, 0x01}, {0x5786, 0x00}, {0x5787, 0x04}, {0x5788, 0x02}, {0x5789, 0x0f}, {0x578a, 0xfd}, {0x578b, 0xf5}, {0x578c, 0xf5}, {0x578d, 0x03}, {0x578e, 0x08}, {0x578f, 0x0c}, {0x5790, 0x08}, {0x5791, 0x04}, {0x5792, 0x00}, {0x5793, 0x52}, {0x5794, 0xa3}, {0x5a08, 0x02}, {0x5b00, 0x02}, {0x5b01, 0x10}, {0x5b02, 0x03}, {0x5b03, 0xcf}, {0x5b05, 0x6c}, {0x5e00, 0x00}, {0x3820, 0x90}, {0x3821, 0x67}, {0x502e, 0x03}, {0x5001, 0x0a}, {0x5004, 0x04}, {0x376b, 0x30}, //{0x0100, 0x01}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz * max_framerate 30fps * mipi_datarate per lane 720Mbps */ static const struct regval ov8856_3264x2448_30fps_regs_4lane[] = { {0x0100, 0x00}, {0x3501, 0x9a}, {0x3502, 0x20}, {0x366e, 0x10}, {0x3714, 0x23}, {0x37c2, 0x04}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x0c}, {0x3804, 0x0c}, {0x3805, 0xdf}, {0x3806, 0x09}, {0x3807, 0xa3}, {0x3808, 0x0c}, {0x3809, 0xc0}, {0x380a, 0x09}, {0x380b, 0x90}, {0x380c, 0x07}, {0x380d, 0x8c}, {0x380e, 0x09}, {0x380f, 0xb2}, {0x3810, 0x00}, {0x3811, 0x04}, {0x3812, 0x00}, {0x3813, 0x02}, {0x3814, 0x01}, {0x382a, 0x01}, {0x4009, 0x0b}, {0x4601, 0x80}, {0x5795, 0x02}, {0x5796, 0x20}, {0x5797, 0x20}, {0x5798, 0xd5}, {0x5799, 0xd5}, {0x579a, 0x00}, {0x579b, 0x50}, {0x579c, 0x00}, {0x579d, 0x2c}, {0x579e, 0x0c}, {0x579f, 0x40}, {0x57a0, 0x09}, {0x57a1, 0x40}, {0x3820, 0x80}, {0x3821, 0x46}, {0x502e, 0x03}, {0x5001, 0x02}, {0x5004, 0x04}, {0x376b, 0x30}, //{0x0100, 0x01}, {REG_NULL, 0x00}, }; static const struct ov8856_mode supported_modes_2lane[] = { { .width = 3264, .height = 2448, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x09ac, .hts_def = 0x078c * 2, .vts_def = 0x09b2, .reg_list = ov8856_3264x2448_30fps_regs_2lane, }, { .width = 1632, .height = 1224, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x04d0, .hts_def = 0x0ea0, .vts_def = 0x04de, .reg_list = ov8856_1632x1224_30fps_regs_2lane, }, }; static const struct ov8856_mode supported_modes_4lane[] = { { .width = 3264, .height = 2448, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x09ac, .hts_def = 0x078c * 2, .vts_def = 0x0A00, .reg_list = ov8856_3264x2448_30fps_regs_4lane, }, }; static const struct ov8856_mode *supported_modes; static const s64 link_freq_menu_items[] = { MIPI_FREQ }; static const char * const ov8856_test_pattern_menu[] = { "Disabled", "Standard Color Bar", "Top-Bottom Darker Color Bar", "Right-Left Darker Color Bar", "Bottom-Top Darker Color Bar" }; /* Write registers up to 4 at a time */ static int ov8856_write_reg(struct i2c_client *client, u16 reg, u32 len, u32 val) { u32 buf_i, val_i; u8 buf[6]; u8 *val_p; __be32 val_be; dev_dbg(&client->dev, "write reg(0x%x val:0x%x)!\n", reg, val); if (len > 4) return -EINVAL; buf[0] = reg >> 8; buf[1] = reg & 0xff; val_be = cpu_to_be32(val); val_p = (u8 *)&val_be; buf_i = 2; val_i = 4 - len; while (val_i < 4) buf[buf_i++] = val_p[val_i++]; if (i2c_master_send(client, buf, len + 2) != len + 2) { dev_err(&client->dev, "write reg(0x%x val:0x%x)! failed !\n", reg, val); return -EIO; } return 0; } static int ov8856_write_array(struct i2c_client *client, const struct regval *regs) { u32 i; int ret = 0; for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) ret = ov8856_write_reg(client, regs[i].addr, OV8856_REG_VALUE_08BIT, regs[i].val); return ret; } /* Read registers up to 4 at a time */ static int ov8856_read_reg(struct i2c_client *client, u16 reg, unsigned int len, u32 *val) { struct i2c_msg msgs[2]; u8 *data_be_p; __be32 data_be = 0; __be16 reg_addr_be = cpu_to_be16(reg); int ret; if (len > 4 || !len) return -EINVAL; data_be_p = (u8 *)&data_be; /* Write register address */ msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = (u8 *)®_addr_be; /* Read data from register */ msgs[1].addr = client->addr; msgs[1].flags = I2C_M_RD; msgs[1].len = len; msgs[1].buf = &data_be_p[4 - len]; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (ret != ARRAY_SIZE(msgs)) { dev_err(&client->dev, "read reg:0x%x failed !\n", reg); return -EIO; } *val = be32_to_cpu(data_be); dev_dbg(&client->dev, "read reg:0x%x value(0x%x) !\n", reg, *val); return 0; } static int ov8856_get_reso_dist(const struct ov8856_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct ov8856_mode * ov8856_find_best_fit(struct ov8856 *ov8856, struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *framefmt = &fmt->format; int dist; int cur_best_fit = 0; int cur_best_fit_dist = -1; unsigned int i; for (i = 0; i < ov8856->cfg_num; i++) { dist = ov8856_get_reso_dist(&supported_modes[i], framefmt); if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { cur_best_fit_dist = dist; cur_best_fit = i; } } return &supported_modes[cur_best_fit]; } static int ov8856_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct ov8856 *ov8856 = to_ov8856(sd); const struct ov8856_mode *mode; s64 h_blank, vblank_def; mutex_lock(&ov8856->mutex); mode = ov8856_find_best_fit(ov8856, fmt); fmt->format.code = OV8856_MEDIA_BUS_FMT; fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format; #else mutex_unlock(&ov8856->mutex); return -ENOTTY; #endif } else { ov8856->cur_mode = mode; h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(ov8856->hblank, h_blank, h_blank, 1, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(ov8856->vblank, vblank_def, OV8856_VTS_MAX - mode->height, 1, vblank_def); } mutex_unlock(&ov8856->mutex); return 0; } static int ov8856_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct ov8856 *ov8856 = to_ov8856(sd); const struct ov8856_mode *mode = ov8856->cur_mode; mutex_lock(&ov8856->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API fmt->format = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); #else mutex_unlock(&ov8856->mutex); return -ENOTTY; #endif } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = OV8856_MEDIA_BUS_FMT; fmt->format.field = V4L2_FIELD_NONE; } mutex_unlock(&ov8856->mutex); return 0; } static int ov8856_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 = OV8856_MEDIA_BUS_FMT; return 0; } static int ov8856_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { struct ov8856 *ov8856 = to_ov8856(sd); if (fse->index >= ov8856->cfg_num) return -EINVAL; if (fse->code != OV8856_MEDIA_BUS_FMT) return -EINVAL; fse->min_width = supported_modes[fse->index].width; fse->max_width = supported_modes[fse->index].width; fse->max_height = supported_modes[fse->index].height; fse->min_height = supported_modes[fse->index].height; return 0; } static int ov8856_enable_test_pattern(struct ov8856 *ov8856, u32 pattern) { u32 val; if (pattern) val = (pattern - 1) | OV8856_TEST_PATTERN_ENABLE; else val = OV8856_TEST_PATTERN_DISABLE; return ov8856_write_reg(ov8856->client, OV8856_REG_TEST_PATTERN, OV8856_REG_VALUE_08BIT, val); } static int ov8856_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct ov8856 *ov8856 = to_ov8856(sd); const struct ov8856_mode *mode = ov8856->cur_mode; // printk("%s yyk\n", __func__); mutex_lock(&ov8856->mutex); fi->interval = mode->max_fps; mutex_unlock(&ov8856->mutex); return 0; } static void ov8856_get_otp(struct otp_info *otp, struct rkmodule_inf *inf) { u32 i, j; u32 w, h; /* awb */ if (otp->awb_data.flag) { inf->awb.flag = 1; inf->awb.r_value = otp->awb_data.r_ratio; inf->awb.b_value = otp->awb_data.b_ratio; inf->awb.gr_value = otp->awb_data.g_ratio; inf->awb.gb_value = 0x0; inf->awb.golden_r_value = otp->awb_data.r_golden; inf->awb.golden_b_value = otp->awb_data.b_golden; inf->awb.golden_gr_value = otp->awb_data.g_golden; inf->awb.golden_gb_value = 0x0; } /* lsc */ if (otp->lsc_data.flag) { inf->lsc.flag = 1; inf->lsc.width = otp->basic_data.size.width; inf->lsc.height = otp->basic_data.size.height; inf->lsc.table_size = otp->lsc_data.table_size; for (i = 0; i < 289; i++) { inf->lsc.lsc_r[i] = (otp->lsc_data.data[i * 2] << 8) | otp->lsc_data.data[i * 2 + 1]; inf->lsc.lsc_gr[i] = (otp->lsc_data.data[i * 2 + 578] << 8) | otp->lsc_data.data[i * 2 + 579]; inf->lsc.lsc_gb[i] = (otp->lsc_data.data[i * 2 + 1156] << 8) | otp->lsc_data.data[i * 2 + 1157]; inf->lsc.lsc_b[i] = (otp->lsc_data.data[i * 2 + 1734] << 8) | otp->lsc_data.data[i * 2 + 1735]; } } /* pdaf */ if (otp->pdaf_data.flag) { inf->pdaf.flag = 1; inf->pdaf.gainmap_width = otp->pdaf_data.gainmap_width; inf->pdaf.gainmap_height = otp->pdaf_data.gainmap_height; inf->pdaf.pd_offset = otp->pdaf_data.pd_offset; inf->pdaf.dcc_mode = otp->pdaf_data.dcc_mode; inf->pdaf.dcc_dir = otp->pdaf_data.dcc_dir; inf->pdaf.dccmap_width = otp->pdaf_data.dccmap_width; inf->pdaf.dccmap_height = otp->pdaf_data.dccmap_height; w = otp->pdaf_data.gainmap_width; h = otp->pdaf_data.gainmap_height; for (i = 0; i < h; i++) { for (j = 0; j < w; j++) { inf->pdaf.gainmap[i * w + j] = (otp->pdaf_data.gainmap[(i * w + j) * 2] << 8) | otp->pdaf_data.gainmap[(i * w + j) * 2 + 1]; } } w = otp->pdaf_data.dccmap_width; h = otp->pdaf_data.dccmap_height; for (i = 0; i < h; i++) { for (j = 0; j < w; j++) { inf->pdaf.dccmap[i * w + j] = (otp->pdaf_data.dccmap[(i * w + j) * 2] << 8) | otp->pdaf_data.dccmap[(i * w + j) * 2 + 1]; } } } /* af */ if (otp->af_data.flag) { inf->af.flag = 1; inf->af.dir_cnt = 1; inf->af.af_otp[0].vcm_start = otp->af_data.af_inf; inf->af.af_otp[0].vcm_end = otp->af_data.af_macro; inf->af.af_otp[0].vcm_dir = 0; } } static void ov8856_get_module_inf(struct ov8856 *ov8856, struct rkmodule_inf *inf) { struct otp_info *otp = ov8856->otp; memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, OV8856_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, ov8856->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, ov8856->len_name, sizeof(inf->base.lens)); if (otp) ov8856_get_otp(otp, inf); } static void ov8856_set_awb_cfg(struct ov8856 *ov8856, struct rkmodule_awb_cfg *cfg) { mutex_lock(&ov8856->mutex); memcpy(&ov8856->awb_cfg, cfg, sizeof(*cfg)); mutex_unlock(&ov8856->mutex); } static void ov8856_set_lsc_cfg(struct ov8856 *ov8856, struct rkmodule_lsc_cfg *cfg) { mutex_lock(&ov8856->mutex); memcpy(&ov8856->lsc_cfg, cfg, sizeof(*cfg)); mutex_unlock(&ov8856->mutex); } static long ov8856_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct ov8856 *ov8856 = to_ov8856(sd); long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: ov8856_get_module_inf(ov8856, (struct rkmodule_inf *)arg); break; case RKMODULE_AWB_CFG: ov8856_set_awb_cfg(ov8856, (struct rkmodule_awb_cfg *)arg); break; case RKMODULE_LSC_CFG: ov8856_set_lsc_cfg(ov8856, (struct rkmodule_lsc_cfg *)arg); break; case RKMODULE_SET_QUICK_STREAM: stream = *((u32 *)arg); if (stream) ret = ov8856_write_reg(ov8856->client, OV8856_REG_CTRL_MODE, OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); else ret = ov8856_write_reg(ov8856->client, OV8856_REG_CTRL_MODE, OV8856_REG_VALUE_08BIT, OV8856_MODE_SW_STANDBY); break; default: ret = -ENOTTY; break; } return ret; } #ifdef CONFIG_COMPAT static long ov8856_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; struct rkmodule_awb_cfg *awb_cfg; struct rkmodule_lsc_cfg *lsc_cfg; long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = ov8856_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) ret = -EFAULT; } kfree(inf); break; case RKMODULE_AWB_CFG: awb_cfg = kzalloc(sizeof(*awb_cfg), GFP_KERNEL); if (!awb_cfg) { ret = -ENOMEM; return ret; } ret = copy_from_user(awb_cfg, up, sizeof(*awb_cfg)); if (!ret) ret = ov8856_ioctl(sd, cmd, awb_cfg); else ret = -EFAULT; kfree(awb_cfg); break; case RKMODULE_LSC_CFG: lsc_cfg = kzalloc(sizeof(*lsc_cfg), GFP_KERNEL); if (!lsc_cfg) { ret = -ENOMEM; return ret; } ret = copy_from_user(lsc_cfg, up, sizeof(*lsc_cfg)); if (!ret) ret = ov8856_ioctl(sd, cmd, lsc_cfg); else ret = -EFAULT; kfree(lsc_cfg); break; case RKMODULE_SET_QUICK_STREAM: ret = copy_from_user(&stream, up, sizeof(u32)); if (!ret) ret = ov8856_ioctl(sd, cmd, &stream); else ret = -EFAULT; break; default: ret = -ENOTTY; break; } return ret; } #endif static int __ov8856_start_stream(struct ov8856 *ov8856) { int ret; ret = ov8856_write_array(ov8856->client, ov8856->cur_mode->reg_list); if (ret) return ret; /* In case these controls are set before streaming */ mutex_unlock(&ov8856->mutex); ret = v4l2_ctrl_handler_setup(&ov8856->ctrl_handler); mutex_lock(&ov8856->mutex); if (ret) return ret; return ov8856_write_reg(ov8856->client, OV8856_REG_CTRL_MODE, OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); } static int __ov8856_stop_stream(struct ov8856 *ov8856) { return ov8856_write_reg(ov8856->client, OV8856_REG_CTRL_MODE, OV8856_REG_VALUE_08BIT, OV8856_MODE_SW_STANDBY); } static int ov8856_s_stream(struct v4l2_subdev *sd, int on) { struct ov8856 *ov8856 = to_ov8856(sd); struct i2c_client *client = ov8856->client; int ret = 0; dev_info(&client->dev, "%s: on: %d, %dx%d@%d\n", __func__, on, ov8856->cur_mode->width, ov8856->cur_mode->height, DIV_ROUND_CLOSEST(ov8856->cur_mode->max_fps.denominator, ov8856->cur_mode->max_fps.numerator)); mutex_lock(&ov8856->mutex); on = !!on; if (on == ov8856->streaming) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ret = __ov8856_start_stream(ov8856); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { __ov8856_stop_stream(ov8856); pm_runtime_put(&client->dev); } ov8856->streaming = on; unlock_and_return: mutex_unlock(&ov8856->mutex); return ret; } static int ov8856_s_power(struct v4l2_subdev *sd, int on) { struct ov8856 *ov8856 = to_ov8856(sd); struct i2c_client *client = ov8856->client; int ret = 0; dev_info(&client->dev, "%s on(%d)\n", __func__, on); mutex_lock(&ov8856->mutex); /* If the power state is not modified - no work to do. */ if (ov8856->power_on == !!on) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ret = ov8856_write_array(ov8856->client, ov8856_global_regs); if (ret) { v4l2_err(sd, "could not set init registers\n"); pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ov8856->power_on = true; } else { pm_runtime_put(&client->dev); ov8856->power_on = false; } unlock_and_return: mutex_unlock(&ov8856->mutex); return ret; } /* Calculate the delay in us by clock rate and clock cycles */ static inline u32 ov8856_cal_delay(u32 cycles) { return DIV_ROUND_UP(cycles, OV8856_XVCLK_FREQ / 1000 / 1000); } static int __ov8856_power_on(struct ov8856 *ov8856) { int ret; u32 delay_us; struct device *dev = &ov8856->client->dev; if (!IS_ERR(ov8856->power_gpio)) gpiod_set_value_cansleep(ov8856->power_gpio, 1); usleep_range(1000, 2000); if (!IS_ERR_OR_NULL(ov8856->pins_default)) { ret = pinctrl_select_state(ov8856->pinctrl, ov8856->pins_default); if (ret < 0) dev_err(dev, "could not set pins\n"); } ret = clk_set_rate(ov8856->xvclk, OV8856_XVCLK_FREQ); if (ret < 0) dev_warn(dev, "Failed to set xvclk rate (24MHz)\n"); if (clk_get_rate(ov8856->xvclk) != OV8856_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); ret = clk_prepare_enable(ov8856->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } if (!IS_ERR(ov8856->reset_gpio)) gpiod_set_value_cansleep(ov8856->reset_gpio, 0); ret = regulator_bulk_enable(OV8856_NUM_SUPPLIES, ov8856->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } if (!IS_ERR(ov8856->reset_gpio)) gpiod_set_value_cansleep(ov8856->reset_gpio, 1); usleep_range(1000, 2000); if (!IS_ERR(ov8856->pwdn_gpio)) gpiod_set_value_cansleep(ov8856->pwdn_gpio, 1); /* 8192 cycles prior to first SCCB transaction */ delay_us = ov8856_cal_delay(8192); usleep_range(delay_us, delay_us * 2); return 0; disable_clk: clk_disable_unprepare(ov8856->xvclk); return ret; } static void __ov8856_power_off(struct ov8856 *ov8856) { int ret; struct device *dev = &ov8856->client->dev; if (!IS_ERR(ov8856->pwdn_gpio)) gpiod_set_value_cansleep(ov8856->pwdn_gpio, 0); clk_disable_unprepare(ov8856->xvclk); if (!IS_ERR(ov8856->reset_gpio)) gpiod_set_value_cansleep(ov8856->reset_gpio, 0); if (!IS_ERR_OR_NULL(ov8856->pins_sleep)) { ret = pinctrl_select_state(ov8856->pinctrl, ov8856->pins_sleep); if (ret < 0) dev_dbg(dev, "could not set pins\n"); } if (!IS_ERR(ov8856->power_gpio)) gpiod_set_value_cansleep(ov8856->power_gpio, 0); regulator_bulk_disable(OV8856_NUM_SUPPLIES, ov8856->supplies); } static int __maybe_unused ov8856_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov8856 *ov8856 = to_ov8856(sd); return __ov8856_power_on(ov8856); } static int __maybe_unused ov8856_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov8856 *ov8856 = to_ov8856(sd); __ov8856_power_off(ov8856); return 0; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int ov8856_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov8856 *ov8856 = to_ov8856(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->state, 0); const struct ov8856_mode *def_mode = &supported_modes[0]; mutex_lock(&ov8856->mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = OV8856_MEDIA_BUS_FMT; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&ov8856->mutex); /* No crop or compose */ return 0; } #endif static int ov8856_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval_enum *fie) { struct ov8856 *ov8856 = to_ov8856(sd); if (fie->index >= ov8856->cfg_num) return -EINVAL; if (fie->code != OV8856_MEDIA_BUS_FMT) return -EINVAL; fie->width = supported_modes[fie->index].width; fie->height = supported_modes[fie->index].height; fie->interval = supported_modes[fie->index].max_fps; return 0; } static int ov8856_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad_id, struct v4l2_mbus_config *config) { struct ov8856 *sensor = to_ov8856(sd); struct device *dev = &sensor->client->dev; dev_info(dev, "%s(%d) enter!\n", __func__, __LINE__); if (2 == sensor->lane_num || 4 == sensor->lane_num) { config->type = V4L2_MBUS_CSI2_DPHY; config->bus.mipi_csi2.num_data_lanes = sensor->lane_num; } else { dev_err(&sensor->client->dev, "unsupported lane_num(%d)\n", sensor->lane_num); } return 0; } static int ov8856_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { struct ov8856 *ov8856 = to_ov8856(sd); if (sel->target == V4L2_SEL_TGT_CROP_BOUNDS) { sel->r.left = 0; sel->r.width = ov8856->cur_mode->width; sel->r.top = 0; sel->r.height = ov8856->cur_mode->height; return 0; } return -EINVAL; } static const struct dev_pm_ops ov8856_pm_ops = { SET_RUNTIME_PM_OPS(ov8856_runtime_suspend, ov8856_runtime_resume, NULL) }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops ov8856_internal_ops = { .open = ov8856_open, }; #endif static const struct v4l2_subdev_core_ops ov8856_core_ops = { .s_power = ov8856_s_power, .ioctl = ov8856_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = ov8856_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops ov8856_video_ops = { .s_stream = ov8856_s_stream, .g_frame_interval = ov8856_g_frame_interval, }; static const struct v4l2_subdev_pad_ops ov8856_pad_ops = { .enum_mbus_code = ov8856_enum_mbus_code, .enum_frame_size = ov8856_enum_frame_sizes, .enum_frame_interval = ov8856_enum_frame_interval, .get_fmt = ov8856_get_fmt, .set_fmt = ov8856_set_fmt, .get_selection = ov8856_get_selection, .get_mbus_config = ov8856_g_mbus_config, }; static const struct v4l2_subdev_ops ov8856_subdev_ops = { .core = &ov8856_core_ops, .video = &ov8856_video_ops, .pad = &ov8856_pad_ops, }; static int ov8856_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov8856 *ov8856 = container_of(ctrl->handler, struct ov8856, ctrl_handler); struct i2c_client *client = ov8856->client; s64 max; int ret = 0; u32 val = 0; /* Propagate change of current control to all related controls */ switch (ctrl->id) { case V4L2_CID_VBLANK: /* Update max exposure while meeting expected vblanking */ max = ov8856->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(ov8856->exposure, ov8856->exposure->minimum, max, ov8856->exposure->step, ov8856->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(&client->dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: /* 4 least significant bits of expsoure are fractional part */ dev_dbg(&client->dev, "set exposure value 0x%x\n", ctrl->val); ret = ov8856_write_reg(ov8856->client, OV8856_REG_EXPOSURE, OV8856_REG_VALUE_24BIT, ctrl->val << 4); break; case V4L2_CID_ANALOGUE_GAIN: dev_dbg(&client->dev, "set analog gain value 0x%x\n", ctrl->val); ret = ov8856_write_reg(ov8856->client, OV8856_REG_GAIN_H, OV8856_REG_VALUE_08BIT, (ctrl->val >> OV8856_GAIN_H_SHIFT) & OV8856_GAIN_H_MASK); ret |= ov8856_write_reg(ov8856->client, OV8856_REG_GAIN_L, OV8856_REG_VALUE_08BIT, ctrl->val & OV8856_GAIN_L_MASK); break; case V4L2_CID_VBLANK: dev_info(&client->dev, "set vb value 0x%x\n", ctrl->val); ret = ov8856_write_reg(ov8856->client, OV8856_REG_VTS, OV8856_REG_VALUE_16BIT, ctrl->val + ov8856->cur_mode->height); break; case V4L2_CID_TEST_PATTERN: ret = ov8856_enable_test_pattern(ov8856, ctrl->val); break; case V4L2_CID_HFLIP: dev_info(&client->dev, "set hflip value 0x%x\n", ctrl->val); ret = ov8856_read_reg(ov8856->client, OV8856_MIRROR_REG, OV8856_REG_VALUE_08BIT, &val); if (ctrl->val) val |= MIRROR_BIT_MASK; else val &= ~MIRROR_BIT_MASK; ret |= ov8856_write_reg(ov8856->client, OV8856_MIRROR_REG, OV8856_REG_VALUE_08BIT, val); ret |= ov8856_read_reg(ov8856->client, OV8856_ISPCTRL2E_REG, OV8856_REG_VALUE_08BIT, &val); if (ctrl->val) val &= ~(ISPCTRL2E_BIT_MASK); else val |= ISPCTRL2E_BIT_MASK; ret |= ov8856_write_reg(ov8856->client, OV8856_ISPCTRL2E_REG, OV8856_REG_VALUE_08BIT, val); ret |= ov8856_read_reg(ov8856->client, OV8856_ISPCTRL1_REG, OV8856_REG_VALUE_08BIT, &val); if (ctrl->val) val |= ISPCTRL1_BIT_MASK; else val &= ~ISPCTRL1_BIT_MASK; ret |= ov8856_write_reg(ov8856->client, OV8856_ISPCTRL1_REG, OV8856_REG_VALUE_08BIT, val); break; case V4L2_CID_VFLIP: dev_info(&client->dev, "set vflip value 0x%x\n", ctrl->val); ret = ov8856_read_reg(ov8856->client, OV8856_FLIP_REG, OV8856_REG_VALUE_08BIT, &val); if (ctrl->val) val &= ~(MIRROR_BIT_MASK); else val |= MIRROR_BIT_MASK; ret |= ov8856_write_reg(ov8856->client, OV8856_FLIP_REG, OV8856_REG_VALUE_08BIT, val); break; default: dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n", __func__, ctrl->id, ctrl->val); break; } pm_runtime_put(&client->dev); return ret; } static const struct v4l2_ctrl_ops ov8856_ctrl_ops = { .s_ctrl = ov8856_set_ctrl, }; static int ov8856_initialize_controls(struct ov8856 *ov8856) { const struct ov8856_mode *mode; struct v4l2_ctrl_handler *handler; struct v4l2_ctrl *ctrl; s64 exposure_max, vblank_def; u32 h_blank; int ret; handler = &ov8856->ctrl_handler; mode = ov8856->cur_mode; ret = v4l2_ctrl_handler_init(handler, 8); if (ret) return ret; handler->lock = &ov8856->mutex; ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 0, 0, link_freq_menu_items); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, ov8856->pixel_rate, 1, ov8856->pixel_rate); h_blank = mode->hts_def - mode->width; ov8856->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (ov8856->hblank) ov8856->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; ov8856->vblank = v4l2_ctrl_new_std(handler, &ov8856_ctrl_ops, V4L2_CID_VBLANK, vblank_def, OV8856_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 6; ov8856->exposure = v4l2_ctrl_new_std(handler, &ov8856_ctrl_ops, V4L2_CID_EXPOSURE, OV8856_EXPOSURE_MIN, exposure_max, OV8856_EXPOSURE_STEP, mode->exp_def); ov8856->anal_gain = v4l2_ctrl_new_std(handler, &ov8856_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, OV8856_GAIN_MIN, OV8856_GAIN_MAX, OV8856_GAIN_STEP, OV8856_GAIN_DEFAULT); ov8856->test_pattern = v4l2_ctrl_new_std_menu_items(handler, &ov8856_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov8856_test_pattern_menu) - 1, 0, 0, ov8856_test_pattern_menu); ov8856->h_flip = v4l2_ctrl_new_std(handler, &ov8856_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); ov8856->v_flip = v4l2_ctrl_new_std(handler, &ov8856_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); if (handler->error) { ret = handler->error; dev_err(&ov8856->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } ov8856->subdev.ctrl_handler = handler; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int ov8856_check_sensor_id(struct ov8856 *ov8856, struct i2c_client *client) { struct device *dev = &ov8856->client->dev; u32 id = 0; int ret; ret = ov8856_read_reg(client, OV8856_REG_CHIP_ID, OV8856_REG_VALUE_24BIT, &id); if (id != CHIP_ID) { dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret); return -ENODEV; } ret = ov8856_read_reg(client, OV8856_CHIP_REVISION_REG, OV8856_REG_VALUE_08BIT, &id); if (ret) { dev_err(dev, "Read chip revision register error\n"); return -ENODEV; } dev_info(dev, "Detected OV%06x sensor, REVISION 0x%x\n", CHIP_ID, id); if (ov8856->lane_num == 4) { ov8856_global_regs = ov8856_global_regs_4lane; ov8856->cur_mode = &supported_modes_4lane[0]; supported_modes = supported_modes_4lane; ov8856->cfg_num = ARRAY_SIZE(supported_modes_4lane); } else { ov8856_global_regs = ov8856_global_regs_2lane; ov8856->cur_mode = &supported_modes_2lane[0]; supported_modes = supported_modes_2lane; ov8856->cfg_num = ARRAY_SIZE(supported_modes_2lane); } return 0; } static int ov8856_configure_regulators(struct ov8856 *ov8856) { unsigned int i; for (i = 0; i < OV8856_NUM_SUPPLIES; i++) ov8856->supplies[i].supply = ov8856_supply_names[i]; return devm_regulator_bulk_get(&ov8856->client->dev, OV8856_NUM_SUPPLIES, ov8856->supplies); } static int ov8856_parse_of(struct ov8856 *ov8856) { struct device *dev = &ov8856->client->dev; struct device_node *endpoint; struct fwnode_handle *fwnode; int rval; endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); if (!endpoint) { dev_err(dev, "Failed to get endpoint\n"); return -EINVAL; } fwnode = of_fwnode_handle(endpoint); rval = fwnode_property_read_u32_array(fwnode, "data-lanes", NULL, 0); if (rval <= 0) { dev_warn(dev, " Get mipi lane num failed!\n"); return -1; } ov8856->lane_num = rval; if (ov8856->lane_num == 4) { ov8856->cur_mode = &supported_modes_4lane[0]; supported_modes = supported_modes_4lane; ov8856->cfg_num = ARRAY_SIZE(supported_modes_4lane); /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ ov8856->pixel_rate = MIPI_FREQ * 2U * ov8856->lane_num / 10U; dev_info(dev, "lane_num(%d) pixel_rate(%u)\n", ov8856->lane_num, ov8856->pixel_rate); } else { ov8856->cur_mode = &supported_modes_2lane[0]; supported_modes = supported_modes_2lane; ov8856->cfg_num = ARRAY_SIZE(supported_modes_2lane); /*pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ ov8856->pixel_rate = MIPI_FREQ * 2U * (ov8856->lane_num) / 10U; dev_info(dev, "lane_num(%d) pixel_rate(%u)\n", ov8856->lane_num, ov8856->pixel_rate); } return 0; } static int ov8856_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct ov8856 *ov8856; struct v4l2_subdev *sd; char facing[2]; int ret; struct device_node *eeprom_ctrl_node; struct i2c_client *eeprom_ctrl_client; struct v4l2_subdev *eeprom_ctrl; struct otp_info *otp_ptr; dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16, (DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff); ov8856 = devm_kzalloc(dev, sizeof(*ov8856), GFP_KERNEL); if (!ov8856) return -ENOMEM; ov8856->client = client; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &ov8856->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &ov8856->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &ov8856->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &ov8856->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } ov8856->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(ov8856->xvclk)) { dev_err(dev, "Failed to get xvclk\n"); return -EINVAL; } ov8856->power_gpio = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW); if (IS_ERR(ov8856->power_gpio)) dev_warn(dev, "Failed to get power-gpios, maybe no use\n"); ov8856->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ov8856->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios, maybe no use\n"); ov8856->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(ov8856->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios, maybe no use\n"); ret = ov8856_configure_regulators(ov8856); if (ret) { dev_err(dev, "Failed to get power regulators\n"); return ret; } ret = ov8856_parse_of(ov8856); if (ret != 0) return -EINVAL; ov8856->pinctrl = devm_pinctrl_get(dev); if (!IS_ERR(ov8856->pinctrl)) { ov8856->pins_default = pinctrl_lookup_state(ov8856->pinctrl, OF_CAMERA_PINCTRL_STATE_DEFAULT); if (IS_ERR(ov8856->pins_default)) dev_err(dev, "could not get default pinstate\n"); ov8856->pins_sleep = pinctrl_lookup_state(ov8856->pinctrl, OF_CAMERA_PINCTRL_STATE_SLEEP); if (IS_ERR(ov8856->pins_sleep)) dev_err(dev, "could not get sleep pinstate\n"); } mutex_init(&ov8856->mutex); sd = &ov8856->subdev; v4l2_i2c_subdev_init(sd, client, &ov8856_subdev_ops); ret = ov8856_initialize_controls(ov8856); if (ret) goto err_destroy_mutex; ret = __ov8856_power_on(ov8856); if (ret) goto err_free_handler; ret = ov8856_check_sensor_id(ov8856, client); if (ret) goto err_power_off; eeprom_ctrl_node = of_parse_phandle(node, "eeprom-ctrl", 0); if (eeprom_ctrl_node) { eeprom_ctrl_client = of_find_i2c_device_by_node(eeprom_ctrl_node); of_node_put(eeprom_ctrl_node); if (IS_ERR_OR_NULL(eeprom_ctrl_client)) { dev_err(dev, "can not get node\n"); goto continue_probe; } eeprom_ctrl = i2c_get_clientdata(eeprom_ctrl_client); if (IS_ERR_OR_NULL(eeprom_ctrl)) { dev_err(dev, "can not get eeprom i2c client\n"); } else { otp_ptr = devm_kzalloc(dev, sizeof(*otp_ptr), GFP_KERNEL); if (!otp_ptr) return -ENOMEM; ret = v4l2_subdev_call(eeprom_ctrl, core, ioctl, 0, otp_ptr); if (!ret) { ov8856->otp = otp_ptr; } else { ov8856->otp = NULL; devm_kfree(dev, otp_ptr); dev_warn(dev, "can not get otp info, skip!\n"); } } } continue_probe: #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &ov8856_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) ov8856->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &ov8856->pad); if (ret < 0) goto err_power_off; #endif memset(facing, 0, sizeof(facing)); if (strcmp(ov8856->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", ov8856->module_index, facing, OV8856_NAME, dev_name(sd->dev)); ret = v4l2_async_register_subdev_sensor(sd); if (ret) { dev_err(dev, "v4l2 async register subdev failed\n"); goto err_clean_entity; } pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_idle(dev); dev_info(dev, "%s success!", __func__); return 0; err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_power_off: __ov8856_power_off(ov8856); err_free_handler: v4l2_ctrl_handler_free(&ov8856->ctrl_handler); err_destroy_mutex: mutex_destroy(&ov8856->mutex); return ret; } static void ov8856_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov8856 *ov8856 = to_ov8856(sd); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&ov8856->ctrl_handler); kfree(ov8856->otp); mutex_destroy(&ov8856->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __ov8856_power_off(ov8856); pm_runtime_set_suspended(&client->dev); } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id ov8856_of_match[] = { { .compatible = "ovti,ov8856" }, {}, }; MODULE_DEVICE_TABLE(of, ov8856_of_match); #endif static const struct i2c_device_id ov8856_match_id[] = { { "ovti,ov8856", 0 }, { }, }; static struct i2c_driver ov8856_i2c_driver = { .driver = { .name = OV8856_NAME, .pm = &ov8856_pm_ops, .of_match_table = of_match_ptr(ov8856_of_match), }, .probe = &ov8856_probe, .remove = &ov8856_remove, .id_table = ov8856_match_id, }; static int __init sensor_mod_init(void) { return i2c_add_driver(&ov8856_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&ov8856_i2c_driver); } device_initcall_sync(sensor_mod_init); module_exit(sensor_mod_exit); MODULE_DESCRIPTION("OmniVision ov8856 sensor driver"); MODULE_LICENSE("GPL v2");