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- // SPDX-License-Identifier: GPL-2.0
- // Copyright (c) 2019 Intel Corporation.
- #include <asm/unaligned.h>
- #include <linux/acpi.h>
- #include <linux/delay.h>
- #include <linux/i2c.h>
- #include <linux/module.h>
- #include <linux/pm_runtime.h>
- #include <media/v4l2-ctrls.h>
- #include <media/v4l2-device.h>
- #include <media/v4l2-fwnode.h>
- #define OV5675_REG_VALUE_08BIT 1
- #define OV5675_REG_VALUE_16BIT 2
- #define OV5675_REG_VALUE_24BIT 3
- #define OV5675_LINK_FREQ_450MHZ 450000000ULL
- #define OV5675_SCLK 90000000LL
- #define OV5675_MCLK 19200000
- #define OV5675_DATA_LANES 2
- #define OV5675_RGB_DEPTH 10
- #define OV5675_REG_CHIP_ID 0x300a
- #define OV5675_CHIP_ID 0x5675
- #define OV5675_REG_MODE_SELECT 0x0100
- #define OV5675_MODE_STANDBY 0x00
- #define OV5675_MODE_STREAMING 0x01
- /* vertical-timings from sensor */
- #define OV5675_REG_VTS 0x380e
- #define OV5675_VTS_30FPS 0x07e4
- #define OV5675_VTS_30FPS_MIN 0x07e4
- #define OV5675_VTS_MAX 0x7fff
- /* horizontal-timings from sensor */
- #define OV5675_REG_HTS 0x380c
- /* Exposure controls from sensor */
- #define OV5675_REG_EXPOSURE 0x3500
- #define OV5675_EXPOSURE_MIN 4
- #define OV5675_EXPOSURE_MAX_MARGIN 4
- #define OV5675_EXPOSURE_STEP 1
- /* Analog gain controls from sensor */
- #define OV5675_REG_ANALOG_GAIN 0x3508
- #define OV5675_ANAL_GAIN_MIN 128
- #define OV5675_ANAL_GAIN_MAX 2047
- #define OV5675_ANAL_GAIN_STEP 1
- /* Digital gain controls from sensor */
- #define OV5675_REG_DIGITAL_GAIN 0x350a
- #define OV5675_REG_MWB_R_GAIN 0x5019
- #define OV5675_REG_MWB_G_GAIN 0x501b
- #define OV5675_REG_MWB_B_GAIN 0x501d
- #define OV5675_DGTL_GAIN_MIN 1024
- #define OV5675_DGTL_GAIN_MAX 4095
- #define OV5675_DGTL_GAIN_STEP 1
- #define OV5675_DGTL_GAIN_DEFAULT 1024
- /* Group Access */
- #define OV5675_REG_GROUP_ACCESS 0x3208
- #define OV5675_GROUP_HOLD_START 0x0
- #define OV5675_GROUP_HOLD_END 0x10
- #define OV5675_GROUP_HOLD_LAUNCH 0xa0
- /* Test Pattern Control */
- #define OV5675_REG_TEST_PATTERN 0x4503
- #define OV5675_TEST_PATTERN_ENABLE BIT(7)
- #define OV5675_TEST_PATTERN_BAR_SHIFT 2
- /* Flip Mirror Controls from sensor */
- #define OV5675_REG_FORMAT1 0x3820
- #define OV5675_REG_FORMAT2 0x373d
- #define to_ov5675(_sd) container_of(_sd, struct ov5675, sd)
- enum {
- OV5675_LINK_FREQ_900MBPS,
- };
- struct ov5675_reg {
- u16 address;
- u8 val;
- };
- struct ov5675_reg_list {
- u32 num_of_regs;
- const struct ov5675_reg *regs;
- };
- struct ov5675_link_freq_config {
- const struct ov5675_reg_list reg_list;
- };
- struct ov5675_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 ov5675_reg_list reg_list;
- };
- static const struct ov5675_reg mipi_data_rate_900mbps[] = {
- {0x0103, 0x01},
- {0x0100, 0x00},
- {0x0300, 0x04},
- {0x0302, 0x8d},
- {0x0303, 0x00},
- {0x030d, 0x26},
- };
- static const struct ov5675_reg mode_2592x1944_regs[] = {
- {0x3002, 0x21},
- {0x3107, 0x23},
- {0x3501, 0x20},
- {0x3503, 0x0c},
- {0x3508, 0x03},
- {0x3509, 0x00},
- {0x3600, 0x66},
- {0x3602, 0x30},
- {0x3610, 0xa5},
- {0x3612, 0x93},
- {0x3620, 0x80},
- {0x3642, 0x0e},
- {0x3661, 0x00},
- {0x3662, 0x10},
- {0x3664, 0xf3},
- {0x3665, 0x9e},
- {0x3667, 0xa5},
- {0x366e, 0x55},
- {0x366f, 0x55},
- {0x3670, 0x11},
- {0x3671, 0x11},
- {0x3672, 0x11},
- {0x3673, 0x11},
- {0x3714, 0x24},
- {0x371a, 0x3e},
- {0x3733, 0x10},
- {0x3734, 0x00},
- {0x373d, 0x24},
- {0x3764, 0x20},
- {0x3765, 0x20},
- {0x3766, 0x12},
- {0x37a1, 0x14},
- {0x37a8, 0x1c},
- {0x37ab, 0x0f},
- {0x37c2, 0x04},
- {0x37cb, 0x00},
- {0x37cc, 0x00},
- {0x37cd, 0x00},
- {0x37ce, 0x00},
- {0x37d8, 0x02},
- {0x37d9, 0x08},
- {0x37dc, 0x04},
- {0x3800, 0x00},
- {0x3801, 0x00},
- {0x3802, 0x00},
- {0x3803, 0x04},
- {0x3804, 0x0a},
- {0x3805, 0x3f},
- {0x3806, 0x07},
- {0x3807, 0xb3},
- {0x3808, 0x0a},
- {0x3809, 0x20},
- {0x380a, 0x07},
- {0x380b, 0x98},
- {0x380c, 0x02},
- {0x380d, 0xee},
- {0x380e, 0x07},
- {0x380f, 0xe4},
- {0x3811, 0x10},
- {0x3813, 0x0d},
- {0x3814, 0x01},
- {0x3815, 0x01},
- {0x3816, 0x01},
- {0x3817, 0x01},
- {0x381e, 0x02},
- {0x3820, 0x88},
- {0x3821, 0x01},
- {0x3832, 0x04},
- {0x3c80, 0x01},
- {0x3c82, 0x00},
- {0x3c83, 0xc8},
- {0x3c8c, 0x0f},
- {0x3c8d, 0xa0},
- {0x3c90, 0x07},
- {0x3c91, 0x00},
- {0x3c92, 0x00},
- {0x3c93, 0x00},
- {0x3c94, 0xd0},
- {0x3c95, 0x50},
- {0x3c96, 0x35},
- {0x3c97, 0x00},
- {0x4001, 0xe0},
- {0x4008, 0x02},
- {0x4009, 0x0d},
- {0x400f, 0x80},
- {0x4013, 0x02},
- {0x4040, 0x00},
- {0x4041, 0x07},
- {0x404c, 0x50},
- {0x404e, 0x20},
- {0x4500, 0x06},
- {0x4503, 0x00},
- {0x450a, 0x04},
- {0x4809, 0x04},
- {0x480c, 0x12},
- {0x4819, 0x70},
- {0x4825, 0x32},
- {0x4826, 0x32},
- {0x482a, 0x06},
- {0x4833, 0x08},
- {0x4837, 0x0d},
- {0x5000, 0x77},
- {0x5b00, 0x01},
- {0x5b01, 0x10},
- {0x5b02, 0x01},
- {0x5b03, 0xdb},
- {0x5b05, 0x6c},
- {0x5e10, 0xfc},
- {0x3500, 0x00},
- {0x3501, 0x3E},
- {0x3502, 0x60},
- {0x3503, 0x08},
- {0x3508, 0x04},
- {0x3509, 0x00},
- {0x3832, 0x48},
- {0x5780, 0x3e},
- {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, 0x06},
- {0x5792, 0x00},
- {0x5793, 0x52},
- {0x5794, 0xa3},
- {0x4003, 0x40},
- {0x3107, 0x01},
- {0x3c80, 0x08},
- {0x3c83, 0xb1},
- {0x3c8c, 0x10},
- {0x3c8d, 0x00},
- {0x3c90, 0x00},
- {0x3c94, 0x00},
- {0x3c95, 0x00},
- {0x3c96, 0x00},
- {0x37cb, 0x09},
- {0x37cc, 0x15},
- {0x37cd, 0x1f},
- {0x37ce, 0x1f},
- };
- static const struct ov5675_reg mode_1296x972_regs[] = {
- {0x3002, 0x21},
- {0x3107, 0x23},
- {0x3501, 0x20},
- {0x3503, 0x0c},
- {0x3508, 0x03},
- {0x3509, 0x00},
- {0x3600, 0x66},
- {0x3602, 0x30},
- {0x3610, 0xa5},
- {0x3612, 0x93},
- {0x3620, 0x80},
- {0x3642, 0x0e},
- {0x3661, 0x00},
- {0x3662, 0x08},
- {0x3664, 0xf3},
- {0x3665, 0x9e},
- {0x3667, 0xa5},
- {0x366e, 0x55},
- {0x366f, 0x55},
- {0x3670, 0x11},
- {0x3671, 0x11},
- {0x3672, 0x11},
- {0x3673, 0x11},
- {0x3714, 0x28},
- {0x371a, 0x3e},
- {0x3733, 0x10},
- {0x3734, 0x00},
- {0x373d, 0x24},
- {0x3764, 0x20},
- {0x3765, 0x20},
- {0x3766, 0x12},
- {0x37a1, 0x14},
- {0x37a8, 0x1c},
- {0x37ab, 0x0f},
- {0x37c2, 0x14},
- {0x37cb, 0x00},
- {0x37cc, 0x00},
- {0x37cd, 0x00},
- {0x37ce, 0x00},
- {0x37d8, 0x02},
- {0x37d9, 0x04},
- {0x37dc, 0x04},
- {0x3800, 0x00},
- {0x3801, 0x00},
- {0x3802, 0x00},
- {0x3803, 0x00},
- {0x3804, 0x0a},
- {0x3805, 0x3f},
- {0x3806, 0x07},
- {0x3807, 0xb7},
- {0x3808, 0x05},
- {0x3809, 0x10},
- {0x380a, 0x03},
- {0x380b, 0xcc},
- {0x380c, 0x02},
- {0x380d, 0xee},
- {0x380e, 0x07},
- {0x380f, 0xd0},
- {0x3811, 0x08},
- {0x3813, 0x0d},
- {0x3814, 0x03},
- {0x3815, 0x01},
- {0x3816, 0x03},
- {0x3817, 0x01},
- {0x381e, 0x02},
- {0x3820, 0x8b},
- {0x3821, 0x01},
- {0x3832, 0x04},
- {0x3c80, 0x01},
- {0x3c82, 0x00},
- {0x3c83, 0xc8},
- {0x3c8c, 0x0f},
- {0x3c8d, 0xa0},
- {0x3c90, 0x07},
- {0x3c91, 0x00},
- {0x3c92, 0x00},
- {0x3c93, 0x00},
- {0x3c94, 0xd0},
- {0x3c95, 0x50},
- {0x3c96, 0x35},
- {0x3c97, 0x00},
- {0x4001, 0xe0},
- {0x4008, 0x00},
- {0x4009, 0x07},
- {0x400f, 0x80},
- {0x4013, 0x02},
- {0x4040, 0x00},
- {0x4041, 0x03},
- {0x404c, 0x50},
- {0x404e, 0x20},
- {0x4500, 0x06},
- {0x4503, 0x00},
- {0x450a, 0x04},
- {0x4809, 0x04},
- {0x480c, 0x12},
- {0x4819, 0x70},
- {0x4825, 0x32},
- {0x4826, 0x32},
- {0x482a, 0x06},
- {0x4833, 0x08},
- {0x4837, 0x0d},
- {0x5000, 0x77},
- {0x5b00, 0x01},
- {0x5b01, 0x10},
- {0x5b02, 0x01},
- {0x5b03, 0xdb},
- {0x5b05, 0x6c},
- {0x5e10, 0xfc},
- {0x3500, 0x00},
- {0x3501, 0x1F},
- {0x3502, 0x20},
- {0x3503, 0x08},
- {0x3508, 0x04},
- {0x3509, 0x00},
- {0x3832, 0x48},
- {0x5780, 0x3e},
- {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, 0x06},
- {0x5792, 0x00},
- {0x5793, 0x52},
- {0x5794, 0xa3},
- {0x4003, 0x40},
- {0x3107, 0x01},
- {0x3c80, 0x08},
- {0x3c83, 0xb1},
- {0x3c8c, 0x10},
- {0x3c8d, 0x00},
- {0x3c90, 0x00},
- {0x3c94, 0x00},
- {0x3c95, 0x00},
- {0x3c96, 0x00},
- {0x37cb, 0x09},
- {0x37cc, 0x15},
- {0x37cd, 0x1f},
- {0x37ce, 0x1f},
- };
- static const char * const ov5675_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[] = {
- OV5675_LINK_FREQ_450MHZ,
- };
- static const struct ov5675_link_freq_config link_freq_configs[] = {
- [OV5675_LINK_FREQ_900MBPS] = {
- .reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_data_rate_900mbps),
- .regs = mipi_data_rate_900mbps,
- }
- }
- };
- static const struct ov5675_mode supported_modes[] = {
- {
- .width = 2592,
- .height = 1944,
- .hts = 1500,
- .vts_def = OV5675_VTS_30FPS,
- .vts_min = OV5675_VTS_30FPS_MIN,
- .reg_list = {
- .num_of_regs = ARRAY_SIZE(mode_2592x1944_regs),
- .regs = mode_2592x1944_regs,
- },
- .link_freq_index = OV5675_LINK_FREQ_900MBPS,
- },
- {
- .width = 1296,
- .height = 972,
- .hts = 1500,
- .vts_def = OV5675_VTS_30FPS,
- .vts_min = OV5675_VTS_30FPS_MIN,
- .reg_list = {
- .num_of_regs = ARRAY_SIZE(mode_1296x972_regs),
- .regs = mode_1296x972_regs,
- },
- .link_freq_index = OV5675_LINK_FREQ_900MBPS,
- }
- };
- struct ov5675 {
- struct v4l2_subdev sd;
- struct media_pad pad;
- struct v4l2_ctrl_handler ctrl_handler;
- /* 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 ov5675_mode *cur_mode;
- /* To serialize asynchronus callbacks */
- struct mutex mutex;
- /* Streaming on/off */
- bool streaming;
- /* True if the device has been identified */
- bool identified;
- };
- static u64 to_pixel_rate(u32 f_index)
- {
- u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV5675_DATA_LANES;
- do_div(pixel_rate, OV5675_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, OV5675_SCLK);
- return ppl;
- }
- static int ov5675_read_reg(struct ov5675 *ov5675, u16 reg, u16 len, u32 *val)
- {
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->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 ov5675_write_reg(struct ov5675 *ov5675, u16 reg, u16 len, u32 val)
- {
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->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 ov5675_write_reg_list(struct ov5675 *ov5675,
- const struct ov5675_reg_list *r_list)
- {
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
- unsigned int i;
- int ret;
- for (i = 0; i < r_list->num_of_regs; i++) {
- ret = ov5675_write_reg(ov5675, 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 ov5675_update_digital_gain(struct ov5675 *ov5675, u32 d_gain)
- {
- int ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_GROUP_ACCESS,
- OV5675_REG_VALUE_08BIT,
- OV5675_GROUP_HOLD_START);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_MWB_R_GAIN,
- OV5675_REG_VALUE_16BIT, d_gain);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_MWB_G_GAIN,
- OV5675_REG_VALUE_16BIT, d_gain);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_MWB_B_GAIN,
- OV5675_REG_VALUE_16BIT, d_gain);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_GROUP_ACCESS,
- OV5675_REG_VALUE_08BIT,
- OV5675_GROUP_HOLD_END);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_GROUP_ACCESS,
- OV5675_REG_VALUE_08BIT,
- OV5675_GROUP_HOLD_LAUNCH);
- return ret;
- }
- static int ov5675_test_pattern(struct ov5675 *ov5675, u32 pattern)
- {
- if (pattern)
- pattern = (pattern - 1) << OV5675_TEST_PATTERN_BAR_SHIFT |
- OV5675_TEST_PATTERN_ENABLE;
- return ov5675_write_reg(ov5675, OV5675_REG_TEST_PATTERN,
- OV5675_REG_VALUE_08BIT, pattern);
- }
- /*
- * OV5675 supports keeping the pixel order by mirror and flip function
- * The Bayer order isn't affected by the flip controls
- */
- static int ov5675_set_ctrl_hflip(struct ov5675 *ov5675, u32 ctrl_val)
- {
- int ret;
- u32 val;
- ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT1,
- OV5675_REG_VALUE_08BIT, &val);
- if (ret)
- return ret;
- return ov5675_write_reg(ov5675, OV5675_REG_FORMAT1,
- OV5675_REG_VALUE_08BIT,
- ctrl_val ? val & ~BIT(3) : val | BIT(3));
- }
- static int ov5675_set_ctrl_vflip(struct ov5675 *ov5675, u8 ctrl_val)
- {
- int ret;
- u32 val;
- ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT1,
- OV5675_REG_VALUE_08BIT, &val);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_FORMAT1,
- OV5675_REG_VALUE_08BIT,
- ctrl_val ? val | BIT(4) | BIT(5) : val & ~BIT(4) & ~BIT(5));
- if (ret)
- return ret;
- ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT2,
- OV5675_REG_VALUE_08BIT, &val);
- if (ret)
- return ret;
- return ov5675_write_reg(ov5675, OV5675_REG_FORMAT2,
- OV5675_REG_VALUE_08BIT,
- ctrl_val ? val | BIT(1) : val & ~BIT(1));
- }
- static int ov5675_set_ctrl(struct v4l2_ctrl *ctrl)
- {
- struct ov5675 *ov5675 = container_of(ctrl->handler,
- struct ov5675, ctrl_handler);
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->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 = ov5675->cur_mode->height + ctrl->val -
- OV5675_EXPOSURE_MAX_MARGIN;
- __v4l2_ctrl_modify_range(ov5675->exposure,
- ov5675->exposure->minimum,
- exposure_max, ov5675->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 = ov5675_write_reg(ov5675, OV5675_REG_ANALOG_GAIN,
- OV5675_REG_VALUE_16BIT, ctrl->val);
- break;
- case V4L2_CID_DIGITAL_GAIN:
- ret = ov5675_update_digital_gain(ov5675, ctrl->val);
- break;
- case V4L2_CID_EXPOSURE:
- /* 4 least significant bits of expsoure are fractional part
- * val = val << 4
- * for ov5675, the unit of exposure is differnt from other
- * OmniVision sensors, its exposure value is twice of the
- * register value, the exposure should be divided by 2 before
- * set register, e.g. val << 3.
- */
- ret = ov5675_write_reg(ov5675, OV5675_REG_EXPOSURE,
- OV5675_REG_VALUE_24BIT, ctrl->val << 3);
- break;
- case V4L2_CID_VBLANK:
- ret = ov5675_write_reg(ov5675, OV5675_REG_VTS,
- OV5675_REG_VALUE_16BIT,
- ov5675->cur_mode->height + ctrl->val +
- 10);
- break;
- case V4L2_CID_TEST_PATTERN:
- ret = ov5675_test_pattern(ov5675, ctrl->val);
- break;
- case V4L2_CID_HFLIP:
- ov5675_set_ctrl_hflip(ov5675, ctrl->val);
- break;
- case V4L2_CID_VFLIP:
- ov5675_set_ctrl_vflip(ov5675, ctrl->val);
- break;
- default:
- ret = -EINVAL;
- break;
- }
- pm_runtime_put(&client->dev);
- return ret;
- }
- static const struct v4l2_ctrl_ops ov5675_ctrl_ops = {
- .s_ctrl = ov5675_set_ctrl,
- };
- static int ov5675_init_controls(struct ov5675 *ov5675)
- {
- struct v4l2_ctrl_handler *ctrl_hdlr;
- s64 exposure_max, h_blank;
- int ret;
- ctrl_hdlr = &ov5675->ctrl_handler;
- ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
- if (ret)
- return ret;
- ctrl_hdlr->lock = &ov5675->mutex;
- ov5675->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_LINK_FREQ,
- ARRAY_SIZE(link_freq_menu_items) - 1,
- 0, link_freq_menu_items);
- if (ov5675->link_freq)
- ov5675->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- ov5675->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_PIXEL_RATE, 0,
- to_pixel_rate(OV5675_LINK_FREQ_900MBPS),
- 1,
- to_pixel_rate(OV5675_LINK_FREQ_900MBPS));
- ov5675->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_VBLANK,
- ov5675->cur_mode->vts_min - ov5675->cur_mode->height,
- OV5675_VTS_MAX - ov5675->cur_mode->height, 1,
- ov5675->cur_mode->vts_def - ov5675->cur_mode->height);
- h_blank = to_pixels_per_line(ov5675->cur_mode->hts,
- ov5675->cur_mode->link_freq_index) - ov5675->cur_mode->width;
- ov5675->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_HBLANK, h_blank, h_blank, 1,
- h_blank);
- if (ov5675->hblank)
- ov5675->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
- OV5675_ANAL_GAIN_MIN, OV5675_ANAL_GAIN_MAX,
- OV5675_ANAL_GAIN_STEP, OV5675_ANAL_GAIN_MIN);
- v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
- OV5675_DGTL_GAIN_MIN, OV5675_DGTL_GAIN_MAX,
- OV5675_DGTL_GAIN_STEP, OV5675_DGTL_GAIN_DEFAULT);
- exposure_max = (ov5675->cur_mode->vts_def - OV5675_EXPOSURE_MAX_MARGIN);
- ov5675->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_EXPOSURE,
- OV5675_EXPOSURE_MIN, exposure_max,
- OV5675_EXPOSURE_STEP,
- exposure_max);
- v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_TEST_PATTERN,
- ARRAY_SIZE(ov5675_test_pattern_menu) - 1,
- 0, 0, ov5675_test_pattern_menu);
- v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_HFLIP, 0, 1, 1, 0);
- v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
- if (ctrl_hdlr->error) {
- v4l2_ctrl_handler_free(ctrl_hdlr);
- return ctrl_hdlr->error;
- }
- ov5675->sd.ctrl_handler = ctrl_hdlr;
- return 0;
- }
- static void ov5675_update_pad_format(const struct ov5675_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 ov5675_identify_module(struct ov5675 *ov5675)
- {
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
- int ret;
- u32 val;
- if (ov5675->identified)
- return 0;
- ret = ov5675_read_reg(ov5675, OV5675_REG_CHIP_ID,
- OV5675_REG_VALUE_24BIT, &val);
- if (ret)
- return ret;
- if (val != OV5675_CHIP_ID) {
- dev_err(&client->dev, "chip id mismatch: %x!=%x",
- OV5675_CHIP_ID, val);
- return -ENXIO;
- }
- ov5675->identified = true;
- return 0;
- }
- static int ov5675_start_streaming(struct ov5675 *ov5675)
- {
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
- const struct ov5675_reg_list *reg_list;
- int link_freq_index, ret;
- ret = ov5675_identify_module(ov5675);
- if (ret)
- return ret;
- link_freq_index = ov5675->cur_mode->link_freq_index;
- reg_list = &link_freq_configs[link_freq_index].reg_list;
- ret = ov5675_write_reg_list(ov5675, reg_list);
- if (ret) {
- dev_err(&client->dev, "failed to set plls");
- return ret;
- }
- reg_list = &ov5675->cur_mode->reg_list;
- ret = ov5675_write_reg_list(ov5675, reg_list);
- if (ret) {
- dev_err(&client->dev, "failed to set mode");
- return ret;
- }
- ret = __v4l2_ctrl_handler_setup(ov5675->sd.ctrl_handler);
- if (ret)
- return ret;
- ret = ov5675_write_reg(ov5675, OV5675_REG_MODE_SELECT,
- OV5675_REG_VALUE_08BIT, OV5675_MODE_STREAMING);
- if (ret) {
- dev_err(&client->dev, "failed to set stream");
- return ret;
- }
- return 0;
- }
- static void ov5675_stop_streaming(struct ov5675 *ov5675)
- {
- struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
- if (ov5675_write_reg(ov5675, OV5675_REG_MODE_SELECT,
- OV5675_REG_VALUE_08BIT, OV5675_MODE_STANDBY))
- dev_err(&client->dev, "failed to set stream");
- }
- static int ov5675_set_stream(struct v4l2_subdev *sd, int enable)
- {
- struct ov5675 *ov5675 = to_ov5675(sd);
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret = 0;
- if (ov5675->streaming == enable)
- return 0;
- mutex_lock(&ov5675->mutex);
- if (enable) {
- ret = pm_runtime_resume_and_get(&client->dev);
- if (ret < 0) {
- mutex_unlock(&ov5675->mutex);
- return ret;
- }
- ret = ov5675_start_streaming(ov5675);
- if (ret) {
- enable = 0;
- ov5675_stop_streaming(ov5675);
- pm_runtime_put(&client->dev);
- }
- } else {
- ov5675_stop_streaming(ov5675);
- pm_runtime_put(&client->dev);
- }
- ov5675->streaming = enable;
- mutex_unlock(&ov5675->mutex);
- return ret;
- }
- static int __maybe_unused ov5675_suspend(struct device *dev)
- {
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
- struct ov5675 *ov5675 = to_ov5675(sd);
- mutex_lock(&ov5675->mutex);
- if (ov5675->streaming)
- ov5675_stop_streaming(ov5675);
- mutex_unlock(&ov5675->mutex);
- return 0;
- }
- static int __maybe_unused ov5675_resume(struct device *dev)
- {
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
- struct ov5675 *ov5675 = to_ov5675(sd);
- int ret;
- mutex_lock(&ov5675->mutex);
- if (ov5675->streaming) {
- ret = ov5675_start_streaming(ov5675);
- if (ret) {
- ov5675->streaming = false;
- ov5675_stop_streaming(ov5675);
- mutex_unlock(&ov5675->mutex);
- return ret;
- }
- }
- mutex_unlock(&ov5675->mutex);
- return 0;
- }
- static int ov5675_set_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
- {
- struct ov5675 *ov5675 = to_ov5675(sd);
- const struct ov5675_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(&ov5675->mutex);
- ov5675_update_pad_format(mode, &fmt->format);
- if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
- *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format;
- } else {
- ov5675->cur_mode = mode;
- __v4l2_ctrl_s_ctrl(ov5675->link_freq, mode->link_freq_index);
- __v4l2_ctrl_s_ctrl_int64(ov5675->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(ov5675->vblank,
- mode->vts_min - mode->height,
- OV5675_VTS_MAX - mode->height, 1,
- vblank_def);
- __v4l2_ctrl_s_ctrl(ov5675->vblank, vblank_def);
- h_blank = to_pixels_per_line(mode->hts, mode->link_freq_index) -
- mode->width;
- __v4l2_ctrl_modify_range(ov5675->hblank, h_blank, h_blank, 1,
- h_blank);
- }
- mutex_unlock(&ov5675->mutex);
- return 0;
- }
- static int ov5675_get_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
- {
- struct ov5675 *ov5675 = to_ov5675(sd);
- mutex_lock(&ov5675->mutex);
- if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
- fmt->format = *v4l2_subdev_get_try_format(&ov5675->sd,
- sd_state,
- fmt->pad);
- else
- ov5675_update_pad_format(ov5675->cur_mode, &fmt->format);
- mutex_unlock(&ov5675->mutex);
- return 0;
- }
- static int ov5675_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 ov5675_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 ov5675_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
- {
- struct ov5675 *ov5675 = to_ov5675(sd);
- mutex_lock(&ov5675->mutex);
- ov5675_update_pad_format(&supported_modes[0],
- v4l2_subdev_get_try_format(sd, fh->state, 0));
- mutex_unlock(&ov5675->mutex);
- return 0;
- }
- static const struct v4l2_subdev_video_ops ov5675_video_ops = {
- .s_stream = ov5675_set_stream,
- };
- static const struct v4l2_subdev_pad_ops ov5675_pad_ops = {
- .set_fmt = ov5675_set_format,
- .get_fmt = ov5675_get_format,
- .enum_mbus_code = ov5675_enum_mbus_code,
- .enum_frame_size = ov5675_enum_frame_size,
- };
- static const struct v4l2_subdev_ops ov5675_subdev_ops = {
- .video = &ov5675_video_ops,
- .pad = &ov5675_pad_ops,
- };
- static const struct media_entity_operations ov5675_subdev_entity_ops = {
- .link_validate = v4l2_subdev_link_validate,
- };
- static const struct v4l2_subdev_internal_ops ov5675_internal_ops = {
- .open = ov5675_open,
- };
- static int ov5675_check_hwcfg(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 mclk;
- int ret;
- unsigned int i, j;
- if (!fwnode)
- return -ENXIO;
- ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
- if (ret) {
- dev_err(dev, "can't get clock frequency");
- return ret;
- }
- if (mclk != OV5675_MCLK) {
- dev_err(dev, "external clock %d is not supported", mclk);
- return -EINVAL;
- }
- 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 != OV5675_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 void ov5675_remove(struct i2c_client *client)
- {
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
- struct ov5675 *ov5675 = to_ov5675(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(&ov5675->mutex);
- }
- static int ov5675_probe(struct i2c_client *client)
- {
- struct ov5675 *ov5675;
- bool full_power;
- int ret;
- ret = ov5675_check_hwcfg(&client->dev);
- if (ret) {
- dev_err(&client->dev, "failed to check HW configuration: %d",
- ret);
- return ret;
- }
- ov5675 = devm_kzalloc(&client->dev, sizeof(*ov5675), GFP_KERNEL);
- if (!ov5675)
- return -ENOMEM;
- v4l2_i2c_subdev_init(&ov5675->sd, client, &ov5675_subdev_ops);
- full_power = acpi_dev_state_d0(&client->dev);
- if (full_power) {
- ret = ov5675_identify_module(ov5675);
- if (ret) {
- dev_err(&client->dev, "failed to find sensor: %d", ret);
- return ret;
- }
- }
- mutex_init(&ov5675->mutex);
- ov5675->cur_mode = &supported_modes[0];
- ret = ov5675_init_controls(ov5675);
- if (ret) {
- dev_err(&client->dev, "failed to init controls: %d", ret);
- goto probe_error_v4l2_ctrl_handler_free;
- }
- ov5675->sd.internal_ops = &ov5675_internal_ops;
- ov5675->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
- ov5675->sd.entity.ops = &ov5675_subdev_entity_ops;
- ov5675->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
- ov5675->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_pads_init(&ov5675->sd.entity, 1, &ov5675->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(&ov5675->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.
- */
- /* Set the device's state to active if it's in D0 state. */
- if (full_power)
- 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(&ov5675->sd.entity);
- probe_error_v4l2_ctrl_handler_free:
- v4l2_ctrl_handler_free(ov5675->sd.ctrl_handler);
- mutex_destroy(&ov5675->mutex);
- return ret;
- }
- static const struct dev_pm_ops ov5675_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(ov5675_suspend, ov5675_resume)
- };
- #ifdef CONFIG_ACPI
- static const struct acpi_device_id ov5675_acpi_ids[] = {
- {"OVTI5675"},
- {}
- };
- MODULE_DEVICE_TABLE(acpi, ov5675_acpi_ids);
- #endif
- static struct i2c_driver ov5675_i2c_driver = {
- .driver = {
- .name = "ov5675",
- .pm = &ov5675_pm_ops,
- .acpi_match_table = ACPI_PTR(ov5675_acpi_ids),
- },
- .probe_new = ov5675_probe,
- .remove = ov5675_remove,
- .flags = I2C_DRV_ACPI_WAIVE_D0_PROBE,
- };
- module_i2c_driver(ov5675_i2c_driver);
- MODULE_AUTHOR("Shawn Tu <[email protected]>");
- MODULE_DESCRIPTION("OmniVision OV5675 sensor driver");
- MODULE_LICENSE("GPL v2");
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