| // SPDX-License-Identifier: GPL-2.0 |
| // Copyright (c) 2019 Intel Corporation. |
| |
| #include <asm/unaligned.h> |
| #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/regulator/consumer.h> |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-fwnode.h> |
| |
| #define OV8856_REG_VALUE_08BIT 1 |
| #define OV8856_REG_VALUE_16BIT 2 |
| #define OV8856_REG_VALUE_24BIT 3 |
| |
| #define OV8856_LINK_FREQ_360MHZ 360000000ULL |
| #define OV8856_LINK_FREQ_180MHZ 180000000ULL |
| #define OV8856_SCLK 144000000ULL |
| #define OV8856_XVCLK_19_2 19200000 |
| #define OV8856_DATA_LANES 4 |
| #define OV8856_RGB_DEPTH 10 |
| |
| #define OV8856_REG_CHIP_ID 0x300a |
| #define OV8856_CHIP_ID 0x00885a |
| |
| #define OV8856_REG_MODE_SELECT 0x0100 |
| #define OV8856_MODE_STANDBY 0x00 |
| #define OV8856_MODE_STREAMING 0x01 |
| |
| /* module revisions */ |
| #define OV8856_2A_MODULE 0x01 |
| #define OV8856_1B_MODULE 0x02 |
| |
| /* the OTP read-out buffer is at 0x7000 and 0xf is the offset |
| * of the byte in the OTP that means the module revision |
| */ |
| #define OV8856_MODULE_REVISION 0x700f |
| #define OV8856_OTP_MODE_CTRL 0x3d84 |
| #define OV8856_OTP_LOAD_CTRL 0x3d81 |
| #define OV8856_OTP_MODE_AUTO 0x00 |
| #define OV8856_OTP_LOAD_CTRL_ENABLE BIT(0) |
| |
| /* vertical-timings from sensor */ |
| #define OV8856_REG_VTS 0x380e |
| #define OV8856_VTS_MAX 0x7fff |
| |
| /* horizontal-timings from sensor */ |
| #define OV8856_REG_HTS 0x380c |
| |
| /* Exposure controls from sensor */ |
| #define OV8856_REG_EXPOSURE 0x3500 |
| #define OV8856_EXPOSURE_MIN 6 |
| #define OV8856_EXPOSURE_MAX_MARGIN 6 |
| #define OV8856_EXPOSURE_STEP 1 |
| |
| /* Analog gain controls from sensor */ |
| #define OV8856_REG_ANALOG_GAIN 0x3508 |
| #define OV8856_ANAL_GAIN_MIN 128 |
| #define OV8856_ANAL_GAIN_MAX 2047 |
| #define OV8856_ANAL_GAIN_STEP 1 |
| |
| /* Digital gain controls from sensor */ |
| #define OV8856_REG_MWB_R_GAIN 0x5019 |
| #define OV8856_REG_MWB_G_GAIN 0x501b |
| #define OV8856_REG_MWB_B_GAIN 0x501d |
| #define OV8856_DGTL_GAIN_MIN 0 |
| #define OV8856_DGTL_GAIN_MAX 4095 |
| #define OV8856_DGTL_GAIN_STEP 1 |
| #define OV8856_DGTL_GAIN_DEFAULT 1024 |
| |
| /* Test Pattern Control */ |
| #define OV8856_REG_TEST_PATTERN 0x5e00 |
| #define OV8856_TEST_PATTERN_ENABLE BIT(7) |
| #define OV8856_TEST_PATTERN_BAR_SHIFT 2 |
| |
| #define to_ov8856(_sd) container_of(_sd, struct ov8856, sd) |
| |
| static const char * const ov8856_supply_names[] = { |
| "dovdd", /* Digital I/O power */ |
| "avdd", /* Analog power */ |
| "dvdd", /* Digital core power */ |
| }; |
| |
| enum { |
| OV8856_LINK_FREQ_720MBPS, |
| OV8856_LINK_FREQ_360MBPS, |
| }; |
| |
| struct ov8856_reg { |
| u16 address; |
| u8 val; |
| }; |
| |
| struct ov8856_reg_list { |
| u32 num_of_regs; |
| const struct ov8856_reg *regs; |
| }; |
| |
| struct ov8856_link_freq_config { |
| const struct ov8856_reg_list reg_list; |
| }; |
| |
| struct ov8856_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; |
| |
| /* Sensor register settings for this resolution */ |
| const struct ov8856_reg_list reg_list; |
| }; |
| |
| static const struct ov8856_reg mipi_data_rate_720mbps[] = { |
| {0x0103, 0x01}, |
| {0x0100, 0x00}, |
| {0x0302, 0x4b}, |
| {0x0303, 0x01}, |
| {0x030b, 0x02}, |
| {0x030d, 0x4b}, |
| {0x031e, 0x0c}, |
| }; |
| |
| static const struct ov8856_reg mipi_data_rate_360mbps[] = { |
| {0x0103, 0x01}, |
| {0x0100, 0x00}, |
| {0x0302, 0x4b}, |
| {0x0303, 0x03}, |
| {0x030b, 0x02}, |
| {0x030d, 0x4b}, |
| {0x031e, 0x0c}, |
| }; |
| |
| static const struct ov8856_reg mode_3280x2464_regs[] = { |
| {0x3000, 0x20}, |
| {0x3003, 0x08}, |
| {0x300e, 0x20}, |
| {0x3010, 0x00}, |
| {0x3015, 0x84}, |
| {0x3018, 0x72}, |
| {0x3021, 0x23}, |
| {0x3033, 0x24}, |
| {0x3500, 0x00}, |
| {0x3501, 0x9a}, |
| {0x3502, 0x20}, |
| {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, 0xca}, |
| {0x3614, 0x20}, |
| {0x3628, 0xff}, |
| {0x3629, 0xff}, |
| {0x362a, 0xff}, |
| {0x3633, 0x10}, |
| {0x3634, 0x10}, |
| {0x3635, 0x10}, |
| {0x3636, 0x10}, |
| {0x3663, 0x08}, |
| {0x3669, 0x34}, |
| {0x366e, 0x10}, |
| {0x3706, 0x86}, |
| {0x370b, 0x7e}, |
| {0x3714, 0x23}, |
| {0x3730, 0x12}, |
| {0x3733, 0x10}, |
| {0x3764, 0x00}, |
| {0x3765, 0x00}, |
| {0x3769, 0x62}, |
| {0x376a, 0x2a}, |
| {0x376b, 0x30}, |
| {0x3780, 0x00}, |
| {0x3781, 0x24}, |
| {0x3782, 0x00}, |
| {0x3783, 0x23}, |
| {0x3798, 0x2f}, |
| {0x37a1, 0x60}, |
| {0x37a8, 0x6a}, |
| {0x37ab, 0x3f}, |
| {0x37c2, 0x04}, |
| {0x37c3, 0xf1}, |
| {0x37c9, 0x80}, |
| {0x37cb, 0x16}, |
| {0x37cc, 0x16}, |
| {0x37cd, 0x16}, |
| {0x37ce, 0x16}, |
| {0x3800, 0x00}, |
| {0x3801, 0x00}, |
| {0x3802, 0x00}, |
| {0x3803, 0x06}, |
| {0x3804, 0x0c}, |
| {0x3805, 0xdf}, |
| {0x3806, 0x09}, |
| {0x3807, 0xa7}, |
| {0x3808, 0x0c}, |
| {0x3809, 0xd0}, |
| {0x380a, 0x09}, |
| {0x380b, 0xa0}, |
| {0x380c, 0x07}, |
| {0x380d, 0x88}, |
| {0x380e, 0x09}, |
| {0x380f, 0xb8}, |
| {0x3810, 0x00}, |
| {0x3811, 0x00}, |
| {0x3812, 0x00}, |
| {0x3813, 0x01}, |
| {0x3814, 0x01}, |
| {0x3815, 0x01}, |
| {0x3816, 0x00}, |
| {0x3817, 0x00}, |
| {0x3818, 0x00}, |
| {0x3819, 0x10}, |
| {0x3820, 0x80}, |
| {0x3821, 0x46}, |
| {0x382a, 0x01}, |
| {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, 0x0b}, |
| {0x400a, 0x00}, |
| {0x400b, 0x84}, |
| {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}, |
| {0x4800, 0x44}, |
| {0x4816, 0x53}, |
| {0x481b, 0x58}, |
| {0x481f, 0x27}, |
| {0x4837, 0x16}, |
| {0x483c, 0x0f}, |
| {0x484b, 0x05}, |
| {0x5000, 0x57}, |
| {0x5001, 0x0a}, |
| {0x5004, 0x04}, |
| {0x502e, 0x03}, |
| {0x5030, 0x41}, |
| {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}, |
| {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}, |
| {0x59f8, 0x3d}, |
| {0x5a08, 0x02}, |
| {0x5b00, 0x02}, |
| {0x5b01, 0x10}, |
| {0x5b02, 0x03}, |
| {0x5b03, 0xcf}, |
| {0x5b05, 0x6c}, |
| {0x5e00, 0x00} |
| }; |
| |
| static const struct ov8856_reg mode_3264x2448_regs[] = { |
| {0x0103, 0x01}, |
| {0x0302, 0x3c}, |
| {0x0303, 0x01}, |
| {0x031e, 0x0c}, |
| {0x3000, 0x20}, |
| {0x3003, 0x08}, |
| {0x300e, 0x20}, |
| {0x3010, 0x00}, |
| {0x3015, 0x84}, |
| {0x3018, 0x72}, |
| {0x3021, 0x23}, |
| {0x3033, 0x24}, |
| {0x3500, 0x00}, |
| {0x3501, 0x9a}, |
| {0x3502, 0x20}, |
| {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, 0xca}, |
| {0x3614, 0x60}, |
| {0x3628, 0xff}, |
| {0x3629, 0xff}, |
| {0x362a, 0xff}, |
| {0x3633, 0x10}, |
| {0x3634, 0x10}, |
| {0x3635, 0x10}, |
| {0x3636, 0x10}, |
| {0x3663, 0x08}, |
| {0x3669, 0x34}, |
| {0x366d, 0x00}, |
| {0x366e, 0x10}, |
| {0x3706, 0x86}, |
| {0x370b, 0x7e}, |
| {0x3714, 0x23}, |
| {0x3730, 0x12}, |
| {0x3733, 0x10}, |
| {0x3764, 0x00}, |
| {0x3765, 0x00}, |
| {0x3769, 0x62}, |
| {0x376a, 0x2a}, |
| {0x376b, 0x30}, |
| {0x3780, 0x00}, |
| {0x3781, 0x24}, |
| {0x3782, 0x00}, |
| {0x3783, 0x23}, |
| {0x3798, 0x2f}, |
| {0x37a1, 0x60}, |
| {0x37a8, 0x6a}, |
| {0x37ab, 0x3f}, |
| {0x37c2, 0x04}, |
| {0x37c3, 0xf1}, |
| {0x37c9, 0x80}, |
| {0x37cb, 0x16}, |
| {0x37cc, 0x16}, |
| {0x37cd, 0x16}, |
| {0x37ce, 0x16}, |
| {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, 0x01}, |
| {0x3814, 0x01}, |
| {0x3815, 0x01}, |
| {0x3816, 0x00}, |
| {0x3817, 0x00}, |
| {0x3818, 0x00}, |
| {0x3819, 0x10}, |
| {0x3820, 0x80}, |
| {0x3821, 0x46}, |
| {0x382a, 0x01}, |
| {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, 0x0b}, |
| {0x400a, 0x00}, |
| {0x400b, 0x84}, |
| {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}, |
| {0x4502, 0x50}, |
| {0x4503, 0x08}, |
| {0x4601, 0x80}, |
| {0x4800, 0x44}, |
| {0x4816, 0x53}, |
| {0x481b, 0x50}, |
| {0x481f, 0x27}, |
| {0x4823, 0x3c}, |
| {0x482b, 0x00}, |
| {0x4831, 0x66}, |
| {0x4837, 0x16}, |
| {0x483c, 0x0f}, |
| {0x484b, 0x05}, |
| {0x5000, 0x77}, |
| {0x5001, 0x0a}, |
| {0x5003, 0xc8}, |
| {0x5004, 0x04}, |
| {0x5006, 0x00}, |
| {0x5007, 0x00}, |
| {0x502e, 0x03}, |
| {0x5030, 0x41}, |
| {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}, |
| {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}, |
| {0x59f8, 0x3d}, |
| {0x5a08, 0x02}, |
| {0x5b00, 0x02}, |
| {0x5b01, 0x10}, |
| {0x5b02, 0x03}, |
| {0x5b03, 0xcf}, |
| {0x5b05, 0x6c}, |
| {0x5e00, 0x00}, |
| {0x5e10, 0xfc} |
| }; |
| |
| static const struct ov8856_reg mode_1640x1232_regs[] = { |
| {0x3000, 0x20}, |
| {0x3003, 0x08}, |
| {0x300e, 0x20}, |
| {0x3010, 0x00}, |
| {0x3015, 0x84}, |
| {0x3018, 0x72}, |
| {0x3021, 0x23}, |
| {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, 0xca}, |
| {0x3614, 0x20}, |
| {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}, |
| {0x376b, 0x30}, |
| {0x3780, 0x00}, |
| {0x3781, 0x24}, |
| {0x3782, 0x00}, |
| {0x3783, 0x23}, |
| {0x3798, 0x2f}, |
| {0x37a1, 0x60}, |
| {0x37a8, 0x6a}, |
| {0x37ab, 0x3f}, |
| {0x37c2, 0x14}, |
| {0x37c3, 0xf1}, |
| {0x37c9, 0x80}, |
| {0x37cb, 0x16}, |
| {0x37cc, 0x16}, |
| {0x37cd, 0x16}, |
| {0x37ce, 0x16}, |
| {0x3800, 0x00}, |
| {0x3801, 0x00}, |
| {0x3802, 0x00}, |
| {0x3803, 0x06}, |
| {0x3804, 0x0c}, |
| {0x3805, 0xdf}, |
| {0x3806, 0x09}, |
| {0x3807, 0xa7}, |
| {0x3808, 0x06}, |
| {0x3809, 0x68}, |
| {0x380a, 0x04}, |
| {0x380b, 0xd0}, |
| {0x380c, 0x0e}, |
| {0x380d, 0xec}, |
| {0x380e, 0x04}, |
| {0x380f, 0xe8}, |
| {0x3810, 0x00}, |
| {0x3811, 0x00}, |
| {0x3812, 0x00}, |
| {0x3813, 0x01}, |
| {0x3814, 0x03}, |
| {0x3815, 0x01}, |
| {0x3816, 0x00}, |
| {0x3817, 0x00}, |
| {0x3818, 0x00}, |
| {0x3819, 0x10}, |
| {0x3820, 0x90}, |
| {0x3821, 0x67}, |
| {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}, |
| {0x400a, 0x00}, |
| {0x400b, 0x84}, |
| {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}, |
| {0x4800, 0x44}, |
| {0x4816, 0x53}, |
| {0x481b, 0x58}, |
| {0x481f, 0x27}, |
| {0x4837, 0x16}, |
| {0x483c, 0x0f}, |
| {0x484b, 0x05}, |
| {0x5000, 0x57}, |
| {0x5001, 0x0a}, |
| {0x5004, 0x04}, |
| {0x502e, 0x03}, |
| {0x5030, 0x41}, |
| {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}, |
| {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}, |
| {0x59f8, 0x3d}, |
| {0x5a08, 0x02}, |
| {0x5b00, 0x02}, |
| {0x5b01, 0x10}, |
| {0x5b02, 0x03}, |
| {0x5b03, 0xcf}, |
| {0x5b05, 0x6c}, |
| {0x5e00, 0x00} |
| }; |
| |
| static const struct ov8856_reg mode_1632x1224_regs[] = { |
| {0x0103, 0x01}, |
| {0x0302, 0x3c}, |
| {0x0303, 0x01}, |
| {0x031e, 0x0c}, |
| {0x3000, 0x20}, |
| {0x3003, 0x08}, |
| {0x300e, 0x20}, |
| {0x3010, 0x00}, |
| {0x3015, 0x84}, |
| {0x3018, 0x72}, |
| {0x3021, 0x23}, |
| {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, 0xca}, |
| {0x3614, 0x60}, |
| {0x3628, 0xff}, |
| {0x3629, 0xff}, |
| {0x362a, 0xff}, |
| {0x3633, 0x10}, |
| {0x3634, 0x10}, |
| {0x3635, 0x10}, |
| {0x3636, 0x10}, |
| {0x3663, 0x08}, |
| {0x3669, 0x34}, |
| {0x366d, 0x00}, |
| {0x366e, 0x08}, |
| {0x3706, 0x86}, |
| {0x370b, 0x7e}, |
| {0x3714, 0x27}, |
| {0x3730, 0x12}, |
| {0x3733, 0x10}, |
| {0x3764, 0x00}, |
| {0x3765, 0x00}, |
| {0x3769, 0x62}, |
| {0x376a, 0x2a}, |
| {0x376b, 0x30}, |
| {0x3780, 0x00}, |
| {0x3781, 0x24}, |
| {0x3782, 0x00}, |
| {0x3783, 0x23}, |
| {0x3798, 0x2f}, |
| {0x37a1, 0x60}, |
| {0x37a8, 0x6a}, |
| {0x37ab, 0x3f}, |
| {0x37c2, 0x14}, |
| {0x37c3, 0xf1}, |
| {0x37c9, 0x80}, |
| {0x37cb, 0x16}, |
| {0x37cc, 0x16}, |
| {0x37cd, 0x16}, |
| {0x37ce, 0x16}, |
| {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, 0x02}, |
| {0x3812, 0x00}, |
| {0x3813, 0x01}, |
| {0x3814, 0x03}, |
| {0x3815, 0x01}, |
| {0x3816, 0x00}, |
| {0x3817, 0x00}, |
| {0x3818, 0x00}, |
| {0x3819, 0x10}, |
| {0x3820, 0x80}, |
| {0x3821, 0x47}, |
| {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}, |
| {0x400a, 0x00}, |
| {0x400b, 0x84}, |
| {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}, |
| {0x4502, 0x50}, |
| {0x4503, 0x08}, |
| {0x4601, 0x80}, |
| {0x4800, 0x44}, |
| {0x4816, 0x53}, |
| {0x481b, 0x50}, |
| {0x481f, 0x27}, |
| {0x4823, 0x3c}, |
| {0x482b, 0x00}, |
| {0x4831, 0x66}, |
| {0x4837, 0x16}, |
| {0x483c, 0x0f}, |
| {0x484b, 0x05}, |
| {0x5000, 0x77}, |
| {0x5001, 0x0a}, |
| {0x5003, 0xc8}, |
| {0x5004, 0x04}, |
| {0x5006, 0x00}, |
| {0x5007, 0x00}, |
| {0x502e, 0x03}, |
| {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}, |
| {0x59f8, 0x3d}, |
| {0x5a08, 0x02}, |
| {0x5b00, 0x02}, |
| {0x5b01, 0x10}, |
| {0x5b02, 0x03}, |
| {0x5b03, 0xcf}, |
| {0x5b05, 0x6c}, |
| {0x5e00, 0x00}, |
| {0x5e10, 0xfc} |
| }; |
| |
| 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" |
| }; |
| |
| static const s64 link_freq_menu_items[] = { |
| OV8856_LINK_FREQ_360MHZ, |
| OV8856_LINK_FREQ_180MHZ |
| }; |
| |
| static const struct ov8856_link_freq_config link_freq_configs[] = { |
| [OV8856_LINK_FREQ_720MBPS] = { |
| .reg_list = { |
| .num_of_regs = ARRAY_SIZE(mipi_data_rate_720mbps), |
| .regs = mipi_data_rate_720mbps, |
| } |
| }, |
| [OV8856_LINK_FREQ_360MBPS] = { |
| .reg_list = { |
| .num_of_regs = ARRAY_SIZE(mipi_data_rate_360mbps), |
| .regs = mipi_data_rate_360mbps, |
| } |
| } |
| }; |
| |
| static const struct ov8856_mode supported_modes[] = { |
| { |
| .width = 3280, |
| .height = 2464, |
| .hts = 1928, |
| .vts_def = 2488, |
| .vts_min = 2488, |
| .reg_list = { |
| .num_of_regs = ARRAY_SIZE(mode_3280x2464_regs), |
| .regs = mode_3280x2464_regs, |
| }, |
| .link_freq_index = OV8856_LINK_FREQ_720MBPS, |
| }, |
| { |
| .width = 3264, |
| .height = 2448, |
| .hts = 1932, |
| .vts_def = 2482, |
| .vts_min = 2482, |
| .reg_list = { |
| .num_of_regs = ARRAY_SIZE(mode_3264x2448_regs), |
| .regs = mode_3264x2448_regs, |
| }, |
| .link_freq_index = OV8856_LINK_FREQ_720MBPS, |
| }, |
| { |
| .width = 1640, |
| .height = 1232, |
| .hts = 3820, |
| .vts_def = 1256, |
| .vts_min = 1256, |
| .reg_list = { |
| .num_of_regs = ARRAY_SIZE(mode_1640x1232_regs), |
| .regs = mode_1640x1232_regs, |
| }, |
| .link_freq_index = OV8856_LINK_FREQ_360MBPS, |
| }, |
| { |
| .width = 1632, |
| .height = 1224, |
| .hts = 1932, |
| .vts_def = 2482, |
| .vts_min = 2482, |
| .reg_list = { |
| .num_of_regs = ARRAY_SIZE(mode_1632x1224_regs), |
| .regs = mode_1632x1224_regs, |
| }, |
| .link_freq_index = OV8856_LINK_FREQ_360MBPS, |
| } |
| }; |
| |
| struct ov8856 { |
| struct v4l2_subdev sd; |
| struct media_pad pad; |
| struct v4l2_ctrl_handler ctrl_handler; |
| |
| struct clk *xvclk; |
| struct gpio_desc *reset_gpio; |
| struct regulator_bulk_data supplies[ARRAY_SIZE(ov8856_supply_names)]; |
| |
| /* V4L2 Controls */ |
| struct v4l2_ctrl *link_freq; |
| struct v4l2_ctrl *pixel_rate; |
| struct v4l2_ctrl *vblank; |
| struct v4l2_ctrl *hblank; |
| struct v4l2_ctrl *exposure; |
| |
| /* Current mode */ |
| const struct ov8856_mode *cur_mode; |
| |
| /* To serialize asynchronus callbacks */ |
| struct mutex mutex; |
| |
| /* Streaming on/off */ |
| bool streaming; |
| }; |
| |
| static u64 to_pixel_rate(u32 f_index) |
| { |
| u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV8856_DATA_LANES; |
| |
| do_div(pixel_rate, OV8856_RGB_DEPTH); |
| |
| return pixel_rate; |
| } |
| |
| static u64 to_pixels_per_line(u32 hts, u32 f_index) |
| { |
| u64 ppl = hts * to_pixel_rate(f_index); |
| |
| do_div(ppl, OV8856_SCLK); |
| |
| return ppl; |
| } |
| |
| static int ov8856_read_reg(struct ov8856 *ov8856, u16 reg, u16 len, u32 *val) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| struct i2c_msg msgs[2]; |
| u8 addr_buf[2]; |
| u8 data_buf[4] = {0}; |
| int ret; |
| |
| if (len > 4) |
| return -EINVAL; |
| |
| put_unaligned_be16(reg, addr_buf); |
| msgs[0].addr = client->addr; |
| msgs[0].flags = 0; |
| msgs[0].len = sizeof(addr_buf); |
| msgs[0].buf = addr_buf; |
| msgs[1].addr = client->addr; |
| msgs[1].flags = I2C_M_RD; |
| msgs[1].len = len; |
| msgs[1].buf = &data_buf[4 - len]; |
| |
| ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); |
| if (ret != ARRAY_SIZE(msgs)) |
| return -EIO; |
| |
| *val = get_unaligned_be32(data_buf); |
| |
| return 0; |
| } |
| |
| static int ov8856_write_reg(struct ov8856 *ov8856, u16 reg, u16 len, u32 val) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| u8 buf[6]; |
| |
| if (len > 4) |
| return -EINVAL; |
| |
| put_unaligned_be16(reg, buf); |
| put_unaligned_be32(val << 8 * (4 - len), buf + 2); |
| if (i2c_master_send(client, buf, len + 2) != len + 2) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static int ov8856_write_reg_list(struct ov8856 *ov8856, |
| const struct ov8856_reg_list *r_list) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| unsigned int i; |
| int ret; |
| |
| for (i = 0; i < r_list->num_of_regs; i++) { |
| ret = ov8856_write_reg(ov8856, r_list->regs[i].address, 1, |
| r_list->regs[i].val); |
| if (ret) { |
| dev_err_ratelimited(&client->dev, |
| "failed to write reg 0x%4.4x. error = %d", |
| r_list->regs[i].address, ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int ov8856_update_digital_gain(struct ov8856 *ov8856, u32 d_gain) |
| { |
| int ret; |
| |
| ret = ov8856_write_reg(ov8856, OV8856_REG_MWB_R_GAIN, |
| OV8856_REG_VALUE_16BIT, d_gain); |
| if (ret) |
| return ret; |
| |
| ret = ov8856_write_reg(ov8856, OV8856_REG_MWB_G_GAIN, |
| OV8856_REG_VALUE_16BIT, d_gain); |
| if (ret) |
| return ret; |
| |
| return ov8856_write_reg(ov8856, OV8856_REG_MWB_B_GAIN, |
| OV8856_REG_VALUE_16BIT, d_gain); |
| } |
| |
| static int ov8856_test_pattern(struct ov8856 *ov8856, u32 pattern) |
| { |
| if (pattern) |
| pattern = (pattern - 1) << OV8856_TEST_PATTERN_BAR_SHIFT | |
| OV8856_TEST_PATTERN_ENABLE; |
| |
| return ov8856_write_reg(ov8856, OV8856_REG_TEST_PATTERN, |
| OV8856_REG_VALUE_08BIT, pattern); |
| } |
| |
| static int ov8856_set_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct ov8856 *ov8856 = container_of(ctrl->handler, |
| struct ov8856, ctrl_handler); |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->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 = ov8856->cur_mode->height + ctrl->val - |
| OV8856_EXPOSURE_MAX_MARGIN; |
| __v4l2_ctrl_modify_range(ov8856->exposure, |
| ov8856->exposure->minimum, |
| exposure_max, ov8856->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: |
| ret = ov8856_write_reg(ov8856, OV8856_REG_ANALOG_GAIN, |
| OV8856_REG_VALUE_16BIT, ctrl->val); |
| break; |
| |
| case V4L2_CID_DIGITAL_GAIN: |
| ret = ov8856_update_digital_gain(ov8856, ctrl->val); |
| break; |
| |
| case V4L2_CID_EXPOSURE: |
| /* 4 least significant bits of expsoure are fractional part */ |
| ret = ov8856_write_reg(ov8856, OV8856_REG_EXPOSURE, |
| OV8856_REG_VALUE_24BIT, ctrl->val << 4); |
| break; |
| |
| case V4L2_CID_VBLANK: |
| ret = ov8856_write_reg(ov8856, OV8856_REG_VTS, |
| OV8856_REG_VALUE_16BIT, |
| ov8856->cur_mode->height + ctrl->val); |
| break; |
| |
| case V4L2_CID_TEST_PATTERN: |
| ret = ov8856_test_pattern(ov8856, ctrl->val); |
| break; |
| |
| default: |
| ret = -EINVAL; |
| 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_init_controls(struct ov8856 *ov8856) |
| { |
| struct v4l2_ctrl_handler *ctrl_hdlr; |
| s64 exposure_max, h_blank; |
| int ret; |
| |
| ctrl_hdlr = &ov8856->ctrl_handler; |
| ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); |
| if (ret) |
| return ret; |
| |
| ctrl_hdlr->lock = &ov8856->mutex; |
| ov8856->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov8856_ctrl_ops, |
| V4L2_CID_LINK_FREQ, |
| ARRAY_SIZE(link_freq_menu_items) - 1, |
| 0, link_freq_menu_items); |
| if (ov8856->link_freq) |
| ov8856->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| |
| ov8856->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov8856_ctrl_ops, |
| V4L2_CID_PIXEL_RATE, 0, |
| to_pixel_rate(OV8856_LINK_FREQ_720MBPS), |
| 1, |
| to_pixel_rate(OV8856_LINK_FREQ_720MBPS)); |
| ov8856->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov8856_ctrl_ops, |
| V4L2_CID_VBLANK, |
| ov8856->cur_mode->vts_min - ov8856->cur_mode->height, |
| OV8856_VTS_MAX - ov8856->cur_mode->height, 1, |
| ov8856->cur_mode->vts_def - ov8856->cur_mode->height); |
| h_blank = to_pixels_per_line(ov8856->cur_mode->hts, |
| ov8856->cur_mode->link_freq_index) - ov8856->cur_mode->width; |
| ov8856->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov8856_ctrl_ops, |
| V4L2_CID_HBLANK, h_blank, h_blank, 1, |
| h_blank); |
| if (ov8856->hblank) |
| ov8856->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| |
| v4l2_ctrl_new_std(ctrl_hdlr, &ov8856_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, |
| OV8856_ANAL_GAIN_MIN, OV8856_ANAL_GAIN_MAX, |
| OV8856_ANAL_GAIN_STEP, OV8856_ANAL_GAIN_MIN); |
| v4l2_ctrl_new_std(ctrl_hdlr, &ov8856_ctrl_ops, V4L2_CID_DIGITAL_GAIN, |
| OV8856_DGTL_GAIN_MIN, OV8856_DGTL_GAIN_MAX, |
| OV8856_DGTL_GAIN_STEP, OV8856_DGTL_GAIN_DEFAULT); |
| exposure_max = ov8856->cur_mode->vts_def - OV8856_EXPOSURE_MAX_MARGIN; |
| ov8856->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov8856_ctrl_ops, |
| V4L2_CID_EXPOSURE, |
| OV8856_EXPOSURE_MIN, exposure_max, |
| OV8856_EXPOSURE_STEP, |
| exposure_max); |
| v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov8856_ctrl_ops, |
| V4L2_CID_TEST_PATTERN, |
| ARRAY_SIZE(ov8856_test_pattern_menu) - 1, |
| 0, 0, ov8856_test_pattern_menu); |
| if (ctrl_hdlr->error) |
| return ctrl_hdlr->error; |
| |
| ov8856->sd.ctrl_handler = ctrl_hdlr; |
| |
| return 0; |
| } |
| |
| static void ov8856_update_pad_format(const struct ov8856_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 ov8856_start_streaming(struct ov8856 *ov8856) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| const struct ov8856_reg_list *reg_list; |
| int link_freq_index, ret; |
| |
| link_freq_index = ov8856->cur_mode->link_freq_index; |
| reg_list = &link_freq_configs[link_freq_index].reg_list; |
| ret = ov8856_write_reg_list(ov8856, reg_list); |
| if (ret) { |
| dev_err(&client->dev, "failed to set plls"); |
| return ret; |
| } |
| |
| reg_list = &ov8856->cur_mode->reg_list; |
| ret = ov8856_write_reg_list(ov8856, reg_list); |
| if (ret) { |
| dev_err(&client->dev, "failed to set mode"); |
| return ret; |
| } |
| |
| ret = __v4l2_ctrl_handler_setup(ov8856->sd.ctrl_handler); |
| if (ret) |
| return ret; |
| |
| ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, |
| OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); |
| if (ret) { |
| dev_err(&client->dev, "failed to set stream"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static void ov8856_stop_streaming(struct ov8856 *ov8856) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| |
| if (ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, |
| OV8856_REG_VALUE_08BIT, OV8856_MODE_STANDBY)) |
| dev_err(&client->dev, "failed to set stream"); |
| } |
| |
| static int ov8856_set_stream(struct v4l2_subdev *sd, int enable) |
| { |
| struct ov8856 *ov8856 = to_ov8856(sd); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret = 0; |
| |
| if (ov8856->streaming == enable) |
| return 0; |
| |
| mutex_lock(&ov8856->mutex); |
| if (enable) { |
| ret = pm_runtime_get_sync(&client->dev); |
| if (ret < 0) { |
| pm_runtime_put_noidle(&client->dev); |
| mutex_unlock(&ov8856->mutex); |
| return ret; |
| } |
| |
| ret = ov8856_start_streaming(ov8856); |
| if (ret) { |
| enable = 0; |
| ov8856_stop_streaming(ov8856); |
| pm_runtime_put(&client->dev); |
| } |
| } else { |
| ov8856_stop_streaming(ov8856); |
| pm_runtime_put(&client->dev); |
| } |
| |
| ov8856->streaming = enable; |
| mutex_unlock(&ov8856->mutex); |
| |
| return ret; |
| } |
| |
| static int __ov8856_power_on(struct ov8856 *ov8856) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| int ret; |
| |
| if (is_acpi_node(dev_fwnode(&client->dev))) |
| return 0; |
| |
| ret = clk_prepare_enable(ov8856->xvclk); |
| if (ret < 0) { |
| dev_err(&client->dev, "failed to enable xvclk\n"); |
| return ret; |
| } |
| |
| if (ov8856->reset_gpio) { |
| gpiod_set_value_cansleep(ov8856->reset_gpio, 1); |
| usleep_range(1000, 2000); |
| } |
| |
| ret = regulator_bulk_enable(ARRAY_SIZE(ov8856_supply_names), |
| ov8856->supplies); |
| if (ret < 0) { |
| dev_err(&client->dev, "failed to enable regulators\n"); |
| goto disable_clk; |
| } |
| |
| gpiod_set_value_cansleep(ov8856->reset_gpio, 0); |
| usleep_range(1500, 1800); |
| |
| return 0; |
| |
| disable_clk: |
| gpiod_set_value_cansleep(ov8856->reset_gpio, 1); |
| clk_disable_unprepare(ov8856->xvclk); |
| |
| return ret; |
| } |
| |
| static void __ov8856_power_off(struct ov8856 *ov8856) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| |
| if (is_acpi_node(dev_fwnode(&client->dev))) |
| return; |
| |
| gpiod_set_value_cansleep(ov8856->reset_gpio, 1); |
| regulator_bulk_disable(ARRAY_SIZE(ov8856_supply_names), |
| ov8856->supplies); |
| clk_disable_unprepare(ov8856->xvclk); |
| } |
| |
| static int __maybe_unused ov8856_suspend(struct device *dev) |
| { |
| struct v4l2_subdev *sd = dev_get_drvdata(dev); |
| struct ov8856 *ov8856 = to_ov8856(sd); |
| |
| mutex_lock(&ov8856->mutex); |
| if (ov8856->streaming) |
| ov8856_stop_streaming(ov8856); |
| |
| __ov8856_power_off(ov8856); |
| mutex_unlock(&ov8856->mutex); |
| |
| return 0; |
| } |
| |
| static int __maybe_unused ov8856_resume(struct device *dev) |
| { |
| struct v4l2_subdev *sd = dev_get_drvdata(dev); |
| struct ov8856 *ov8856 = to_ov8856(sd); |
| int ret; |
| |
| mutex_lock(&ov8856->mutex); |
| |
| __ov8856_power_on(ov8856); |
| if (ov8856->streaming) { |
| ret = ov8856_start_streaming(ov8856); |
| if (ret) { |
| ov8856->streaming = false; |
| ov8856_stop_streaming(ov8856); |
| mutex_unlock(&ov8856->mutex); |
| return ret; |
| } |
| } |
| |
| mutex_unlock(&ov8856->mutex); |
| |
| return 0; |
| } |
| |
| static int ov8856_set_format(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| struct v4l2_subdev_format *fmt) |
| { |
| struct ov8856 *ov8856 = to_ov8856(sd); |
| const struct ov8856_mode *mode; |
| s32 vblank_def, h_blank; |
| |
| mode = v4l2_find_nearest_size(supported_modes, |
| ARRAY_SIZE(supported_modes), width, |
| height, fmt->format.width, |
| fmt->format.height); |
| |
| mutex_lock(&ov8856->mutex); |
| ov8856_update_pad_format(mode, &fmt->format); |
| if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
| *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; |
| } else { |
| ov8856->cur_mode = mode; |
| __v4l2_ctrl_s_ctrl(ov8856->link_freq, mode->link_freq_index); |
| __v4l2_ctrl_s_ctrl_int64(ov8856->pixel_rate, |
| to_pixel_rate(mode->link_freq_index)); |
| |
| /* Update limits and set FPS to default */ |
| vblank_def = mode->vts_def - mode->height; |
| __v4l2_ctrl_modify_range(ov8856->vblank, |
| mode->vts_min - mode->height, |
| OV8856_VTS_MAX - mode->height, 1, |
| vblank_def); |
| __v4l2_ctrl_s_ctrl(ov8856->vblank, vblank_def); |
| h_blank = to_pixels_per_line(mode->hts, mode->link_freq_index) - |
| mode->width; |
| __v4l2_ctrl_modify_range(ov8856->hblank, h_blank, h_blank, 1, |
| h_blank); |
| } |
| |
| mutex_unlock(&ov8856->mutex); |
| |
| return 0; |
| } |
| |
| static int ov8856_get_format(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| struct v4l2_subdev_format *fmt) |
| { |
| struct ov8856 *ov8856 = to_ov8856(sd); |
| |
| mutex_lock(&ov8856->mutex); |
| if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) |
| fmt->format = *v4l2_subdev_get_try_format(&ov8856->sd, cfg, |
| fmt->pad); |
| else |
| ov8856_update_pad_format(ov8856->cur_mode, &fmt->format); |
| |
| mutex_unlock(&ov8856->mutex); |
| |
| return 0; |
| } |
| |
| static int ov8856_enum_mbus_code(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| struct v4l2_subdev_mbus_code_enum *code) |
| { |
| /* Only one bayer order GRBG is supported */ |
| if (code->index > 0) |
| return -EINVAL; |
| |
| code->code = MEDIA_BUS_FMT_SGRBG10_1X10; |
| |
| return 0; |
| } |
| |
| static int ov8856_enum_frame_size(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| 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 ov8856_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| { |
| struct ov8856 *ov8856 = to_ov8856(sd); |
| |
| mutex_lock(&ov8856->mutex); |
| ov8856_update_pad_format(&supported_modes[0], |
| v4l2_subdev_get_try_format(sd, fh->pad, 0)); |
| mutex_unlock(&ov8856->mutex); |
| |
| return 0; |
| } |
| |
| static const struct v4l2_subdev_video_ops ov8856_video_ops = { |
| .s_stream = ov8856_set_stream, |
| }; |
| |
| static const struct v4l2_subdev_pad_ops ov8856_pad_ops = { |
| .set_fmt = ov8856_set_format, |
| .get_fmt = ov8856_get_format, |
| .enum_mbus_code = ov8856_enum_mbus_code, |
| .enum_frame_size = ov8856_enum_frame_size, |
| }; |
| |
| static const struct v4l2_subdev_ops ov8856_subdev_ops = { |
| .video = &ov8856_video_ops, |
| .pad = &ov8856_pad_ops, |
| }; |
| |
| static const struct media_entity_operations ov8856_subdev_entity_ops = { |
| .link_validate = v4l2_subdev_link_validate, |
| }; |
| |
| static const struct v4l2_subdev_internal_ops ov8856_internal_ops = { |
| .open = ov8856_open, |
| }; |
| |
| static int ov8856_identify_module(struct ov8856 *ov8856) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); |
| int ret; |
| u32 val; |
| |
| ret = ov8856_read_reg(ov8856, OV8856_REG_CHIP_ID, |
| OV8856_REG_VALUE_24BIT, &val); |
| if (ret) |
| return ret; |
| |
| if (val != OV8856_CHIP_ID) { |
| dev_err(&client->dev, "chip id mismatch: %x!=%x", |
| OV8856_CHIP_ID, val); |
| return -ENXIO; |
| } |
| |
| ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, |
| OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); |
| if (ret) |
| return ret; |
| |
| ret = ov8856_write_reg(ov8856, OV8856_OTP_MODE_CTRL, |
| OV8856_REG_VALUE_08BIT, OV8856_OTP_MODE_AUTO); |
| if (ret) { |
| dev_err(&client->dev, "failed to set otp mode"); |
| return ret; |
| } |
| |
| ret = ov8856_write_reg(ov8856, OV8856_OTP_LOAD_CTRL, |
| OV8856_REG_VALUE_08BIT, |
| OV8856_OTP_LOAD_CTRL_ENABLE); |
| if (ret) { |
| dev_err(&client->dev, "failed to enable load control"); |
| return ret; |
| } |
| |
| ret = ov8856_read_reg(ov8856, OV8856_MODULE_REVISION, |
| OV8856_REG_VALUE_08BIT, &val); |
| if (ret) { |
| dev_err(&client->dev, "failed to read module revision"); |
| return ret; |
| } |
| |
| dev_info(&client->dev, "OV8856 revision %x (%s) at address 0x%02x\n", |
| val, |
| val == OV8856_2A_MODULE ? "2A" : |
| val == OV8856_1B_MODULE ? "1B" : "unknown revision", |
| client->addr); |
| |
| ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, |
| OV8856_REG_VALUE_08BIT, OV8856_MODE_STANDBY); |
| if (ret) { |
| dev_err(&client->dev, "failed to exit streaming mode"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int ov8856_get_hwcfg(struct ov8856 *ov8856, struct device *dev) |
| { |
| struct fwnode_handle *ep; |
| struct fwnode_handle *fwnode = dev_fwnode(dev); |
| struct v4l2_fwnode_endpoint bus_cfg = { |
| .bus_type = V4L2_MBUS_CSI2_DPHY |
| }; |
| u32 xvclk_rate; |
| int ret; |
| unsigned int i, j; |
| |
| if (!fwnode) |
| return -ENXIO; |
| |
| ret = fwnode_property_read_u32(fwnode, "clock-frequency", &xvclk_rate); |
| if (ret) |
| return ret; |
| |
| if (!is_acpi_node(fwnode)) { |
| ov8856->xvclk = devm_clk_get(dev, "xvclk"); |
| if (IS_ERR(ov8856->xvclk)) { |
| dev_err(dev, "could not get xvclk clock (%pe)\n", |
| ov8856->xvclk); |
| return PTR_ERR(ov8856->xvclk); |
| } |
| |
| clk_set_rate(ov8856->xvclk, xvclk_rate); |
| xvclk_rate = clk_get_rate(ov8856->xvclk); |
| } |
| |
| if (xvclk_rate != OV8856_XVCLK_19_2) |
| dev_warn(dev, "external clock rate %u is unsupported", |
| xvclk_rate); |
| |
| ov8856->reset_gpio = devm_gpiod_get_optional(dev, "reset", |
| GPIOD_OUT_LOW); |
| if (IS_ERR(ov8856->reset_gpio)) |
| return PTR_ERR(ov8856->reset_gpio); |
| |
| for (i = 0; i < ARRAY_SIZE(ov8856_supply_names); i++) |
| ov8856->supplies[i].supply = ov8856_supply_names[i]; |
| |
| ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ov8856_supply_names), |
| ov8856->supplies); |
| if (ret) |
| return ret; |
| |
| 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 != OV8856_DATA_LANES) { |
| dev_err(dev, "number of CSI2 data lanes %d is not supported", |
| bus_cfg.bus.mipi_csi2.num_data_lanes); |
| ret = -EINVAL; |
| goto check_hwcfg_error; |
| } |
| |
| if (!bus_cfg.nr_of_link_frequencies) { |
| dev_err(dev, "no link frequencies defined"); |
| ret = -EINVAL; |
| goto check_hwcfg_error; |
| } |
| |
| 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 check_hwcfg_error; |
| } |
| } |
| |
| check_hwcfg_error: |
| v4l2_fwnode_endpoint_free(&bus_cfg); |
| |
| return ret; |
| } |
| |
| static int 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); |
| media_entity_cleanup(&sd->entity); |
| v4l2_ctrl_handler_free(sd->ctrl_handler); |
| pm_runtime_disable(&client->dev); |
| mutex_destroy(&ov8856->mutex); |
| |
| __ov8856_power_off(ov8856); |
| |
| return 0; |
| } |
| |
| static int ov8856_probe(struct i2c_client *client) |
| { |
| struct ov8856 *ov8856; |
| int ret; |
| |
| ov8856 = devm_kzalloc(&client->dev, sizeof(*ov8856), GFP_KERNEL); |
| if (!ov8856) |
| return -ENOMEM; |
| |
| ret = ov8856_get_hwcfg(ov8856, &client->dev); |
| if (ret) { |
| dev_err(&client->dev, "failed to get HW configuration: %d", |
| ret); |
| return ret; |
| } |
| |
| v4l2_i2c_subdev_init(&ov8856->sd, client, &ov8856_subdev_ops); |
| |
| ret = __ov8856_power_on(ov8856); |
| if (ret) { |
| dev_err(&client->dev, "failed to power on\n"); |
| return ret; |
| } |
| |
| ret = ov8856_identify_module(ov8856); |
| if (ret) { |
| dev_err(&client->dev, "failed to find sensor: %d", ret); |
| goto probe_power_off; |
| } |
| |
| mutex_init(&ov8856->mutex); |
| ov8856->cur_mode = &supported_modes[0]; |
| ret = ov8856_init_controls(ov8856); |
| if (ret) { |
| dev_err(&client->dev, "failed to init controls: %d", ret); |
| goto probe_error_v4l2_ctrl_handler_free; |
| } |
| |
| ov8856->sd.internal_ops = &ov8856_internal_ops; |
| ov8856->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
| ov8856->sd.entity.ops = &ov8856_subdev_entity_ops; |
| ov8856->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; |
| ov8856->pad.flags = MEDIA_PAD_FL_SOURCE; |
| ret = media_entity_pads_init(&ov8856->sd.entity, 1, &ov8856->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(&ov8856->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(&ov8856->sd.entity); |
| |
| probe_error_v4l2_ctrl_handler_free: |
| v4l2_ctrl_handler_free(ov8856->sd.ctrl_handler); |
| mutex_destroy(&ov8856->mutex); |
| |
| probe_power_off: |
| __ov8856_power_off(ov8856); |
| |
| return ret; |
| } |
| |
| static const struct dev_pm_ops ov8856_pm_ops = { |
| SET_SYSTEM_SLEEP_PM_OPS(ov8856_suspend, ov8856_resume) |
| }; |
| |
| #ifdef CONFIG_ACPI |
| static const struct acpi_device_id ov8856_acpi_ids[] = { |
| {"OVTI8856"}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(acpi, ov8856_acpi_ids); |
| #endif |
| |
| static const struct of_device_id ov8856_of_match[] = { |
| { .compatible = "ovti,ov8856" }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, ov8856_of_match); |
| |
| static struct i2c_driver ov8856_i2c_driver = { |
| .driver = { |
| .name = "ov8856", |
| .pm = &ov8856_pm_ops, |
| .acpi_match_table = ACPI_PTR(ov8856_acpi_ids), |
| .of_match_table = ov8856_of_match, |
| }, |
| .probe_new = ov8856_probe, |
| .remove = ov8856_remove, |
| }; |
| |
| module_i2c_driver(ov8856_i2c_driver); |
| |
| MODULE_AUTHOR("Ben Kao <ben.kao@intel.com>"); |
| MODULE_DESCRIPTION("OmniVision OV8856 sensor driver"); |
| MODULE_LICENSE("GPL v2"); |