// SPDX-License-Identifier: GPL-2.0 /* * Omnivision OV2311 1600x1300 global shutter image sensor driver * Copyright (C) 2022, Raspberry Pi (Trading) Ltd * * This driver is based on the OV9281 driver. * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd. * Register configuration from * https://github.com/ArduCAM/ArduCAM_USB_Camera_Shield/tree/master/Config/USB3.0_UC-425_Rev.C%2BUC-628_Rev.B/OV2311 * with additional exposure and gain register information from * https://github.com/renesas-rcar/linux-bsp/tree/0cf6e36f5bf49e1c2aab87139ec5b588623c56f8/drivers/media/i2c/imagers */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define OV2311_LINK_FREQ 400000000 #define OV2311_LANES 2 /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ #define OV2311_PIXEL_RATE_10BIT (OV2311_LINK_FREQ * 2 * \ OV2311_LANES / 10) #define OV2311_PIXEL_RATE_8BIT (OV2311_LINK_FREQ * 2 * \ OV2311_LANES / 8) #define OV2311_XVCLK_FREQ 24000000 #define CHIP_ID 0x2311 #define OV2311_REG_CHIP_ID 0x300a #define OV2311_REG_CTRL_MODE 0x0100 #define OV2311_MODE_SW_STANDBY 0x0 #define OV2311_MODE_STREAMING BIT(0) #define OV2311_REG_V_FLIP 0x3820 #define OV2311_REG_H_FLIP 0x3821 #define OV2311_FLIP_BIT BIT(2) #define OV2311_REG_EXPOSURE 0x3501 #define OV2311_EXPOSURE_MIN 4 #define OV2311_EXPOSURE_STEP 1 #define OV2311_VTS_MAX 0xffff #define OV2311_REG_GAIN_H 0x3508 #define OV2311_REG_GAIN_L 0x3509 #define OV2311_GAIN_H_MASK 0x07 #define OV2311_GAIN_H_SHIFT 8 #define OV2311_GAIN_L_MASK 0xff #define OV2311_GAIN_MIN 0x100 #define OV2311_GAIN_MAX 0x780 #define OV2311_GAIN_STEP 1 #define OV2311_GAIN_DEFAULT OV2311_GAIN_MIN #define OV2311_REG_TEST_PATTERN 0x5e00 #define OV2311_TEST_PATTERN_ENABLE 0x80 #define OV2311_TEST_PATTERN_DISABLE 0x0 #define OV2311_REG_VTS 0x380e /* * OV2311 native and active pixel array size. * Datasheet not available to confirm these values. renesas-rcar linux-bsp tree * has these values. */ #define OV2311_NATIVE_WIDTH 1616U #define OV2311_NATIVE_HEIGHT 1316U #define OV2311_PIXEL_ARRAY_LEFT 8U #define OV2311_PIXEL_ARRAY_TOP 8U #define OV2311_PIXEL_ARRAY_WIDTH 1600U #define OV2311_PIXEL_ARRAY_HEIGHT 1300U #define REG_NULL 0xFFFF #define OV2311_REG_VALUE_08BIT 1 #define OV2311_REG_VALUE_16BIT 2 #define OV2311_REG_VALUE_24BIT 3 #define OV2311_NAME "ov2311" static const char * const ov2311_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define OV2311_NUM_SUPPLIES ARRAY_SIZE(ov2311_supply_names) struct regval { u16 addr; u8 val; }; struct ov2311_mode { u32 width; u32 height; u32 hts_def; u32 vts_def; u32 exp_def; struct v4l2_rect crop; const struct regval *reg_list; }; struct ov2311 { struct i2c_client *client; struct clk *xvclk; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[OV2311_NUM_SUPPLIES]; struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *exposure; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *pixel_rate; /* * Mutex for serialized access: * Protect sensor module set pad format and start/stop streaming safely. */ struct mutex mutex; /* Streaming on/off */ bool streaming; const struct ov2311_mode *cur_mode; u32 code; }; #define to_ov2311(sd) container_of(sd, struct ov2311, subdev) /* * Xclk 24Mhz * max_framerate 60fps for 10 bit, 74.6fps for 8 bit. */ static const struct regval ov2311_common_regs[] = { { 0x0103, 0x01 }, { 0x0100, 0x00 }, { 0x0300, 0x01 }, { 0x0302, 0x32 }, { 0x0303, 0x00 }, { 0x0304, 0x03 }, { 0x0305, 0x02 }, { 0x0306, 0x01 }, { 0x030e, 0x04 }, { 0x3001, 0x02 }, { 0x3004, 0x00 }, { 0x3005, 0x00 }, { 0x3006, 0x00 }, { 0x3011, 0x0d }, { 0x3014, 0x04 }, { 0x301c, 0xf0 }, { 0x3020, 0x00 }, { 0x302c, 0x00 }, { 0x302d, 0x12 }, { 0x302e, 0x4c }, { 0x302f, 0x8c }, { 0x3030, 0x10 }, { 0x303f, 0x03 }, { 0x3103, 0x00 }, { 0x3106, 0x08 }, { 0x31ff, 0x01 }, { 0x3501, 0x05 }, { 0x3502, 0xba }, { 0x3506, 0x00 }, { 0x3507, 0x00 }, { 0x3620, 0x67 }, { 0x3633, 0x78 }, { 0x3666, 0x00 }, { 0x3670, 0x68 }, { 0x3674, 0x10 }, { 0x3675, 0x00 }, { 0x3680, 0x84 }, { 0x36a2, 0x04 }, { 0x36a3, 0x80 }, { 0x36b0, 0x00 }, { 0x3700, 0x35 }, { 0x3704, 0x59 }, { 0x3712, 0x00 }, { 0x3713, 0x02 }, { 0x379b, 0x01 }, { 0x379c, 0x10 }, { 0x3800, 0x00 }, { 0x3801, 0x00 }, { 0x3804, 0x06 }, { 0x3805, 0x4f }, { 0x3810, 0x00 }, { 0x3811, 0x08 }, { 0x3812, 0x00 }, { 0x3813, 0x08 }, { 0x3814, 0x11 }, { 0x3815, 0x11 }, { 0x3816, 0x00 }, { 0x3817, 0x00 }, { 0x3818, 0x04 }, { 0x3819, 0x00 }, { 0x382b, 0x5a }, { 0x382c, 0x09 }, { 0x382d, 0x9a }, { 0x3882, 0x02 }, { 0x3883, 0x6c }, { 0x3885, 0x07 }, { 0x389d, 0x03 }, { 0x38a6, 0x00 }, { 0x38a7, 0x01 }, { 0x38b3, 0x07 }, { 0x38b1, 0x00 }, { 0x38e5, 0x02 }, { 0x38e7, 0x00 }, { 0x38e8, 0x00 }, { 0x3910, 0xff }, { 0x3911, 0xff }, { 0x3912, 0x08 }, { 0x3913, 0x00 }, { 0x3914, 0x00 }, { 0x3915, 0x00 }, { 0x391c, 0x00 }, { 0x3920, 0xa5 }, { 0x3921, 0x00 }, { 0x3922, 0x00 }, { 0x3923, 0x00 }, { 0x3924, 0x05 }, { 0x3925, 0x00 }, { 0x3926, 0x00 }, { 0x3927, 0x00 }, { 0x3928, 0x1a }, { 0x392d, 0x05 }, { 0x392e, 0xf2 }, { 0x392f, 0x40 }, { 0x4001, 0x00 }, { 0x4003, 0x40 }, { 0x4008, 0x12 }, { 0x4009, 0x1b }, { 0x400c, 0x0c }, { 0x400d, 0x13 }, { 0x4010, 0xf0 }, { 0x4011, 0x00 }, { 0x4016, 0x00 }, { 0x4017, 0x04 }, { 0x4042, 0x11 }, { 0x4043, 0x70 }, { 0x4045, 0x00 }, { 0x4409, 0x5f }, { 0x450b, 0x00 }, { 0x4600, 0x00 }, { 0x4601, 0xa0 }, { 0x4708, 0x09 }, { 0x470c, 0x81 }, { 0x4710, 0x06 }, { 0x4711, 0x00 }, { 0x4800, 0x00 }, { 0x481f, 0x30 }, { 0x4837, 0x14 }, { 0x4f00, 0x00 }, { 0x4f07, 0x00 }, { 0x4f08, 0x03 }, { 0x4f09, 0x08 }, { 0x4f0c, 0x06 }, { 0x4f0d, 0x02 }, { 0x4f10, 0x00 }, { 0x4f11, 0x00 }, { 0x4f12, 0x07 }, { 0x4f13, 0xe2 }, { 0x5000, 0x9f }, { 0x5001, 0x20 }, { 0x5026, 0x00 }, { 0x5c00, 0x00 }, { 0x5c01, 0x2c }, { 0x5c02, 0x00 }, { 0x5c03, 0x7f }, { 0x5e00, 0x00 }, { 0x5e01, 0x41 }, {REG_NULL, 0x00}, }; static const struct regval ov2311_1600x1300_regs[] = { { 0x3802, 0x00 }, { 0x3803, 0x00 }, { 0x3806, 0x05 }, { 0x3807, 0x23 }, { 0x3808, 0x06 }, { 0x3809, 0x40 }, { 0x380a, 0x05 }, { 0x380b, 0x14 }, { 0x380c, 0x03 }, { 0x380d, 0x88 }, {REG_NULL, 0x00}, }; static const struct regval ov2311_1600x1080_regs[] = { { 0x3802, 0x00 }, { 0x3803, 0x6e }, { 0x3806, 0x04 }, { 0x3807, 0xae }, { 0x3808, 0x06 }, { 0x3809, 0x40 }, { 0x380a, 0x04 }, { 0x380b, 0x38 }, { 0x380c, 0x03 }, { 0x380d, 0x88 }, { 0x5d01, 0x00 }, { 0x5d02, 0x04 }, { 0x5d03, 0x00 }, { 0x5d04, 0x04 }, { 0x5d05, 0x00 }, {REG_NULL, 0x00}, }; static const struct regval op_10bit[] = { { 0x030d, 0x5a }, { 0x3662, 0x65 }, {REG_NULL, 0x00}, }; static const struct regval op_8bit[] = { { 0x030d, 0x70 }, { 0x3662, 0x67 }, {REG_NULL, 0x00}, }; static const struct ov2311_mode supported_modes[] = { { .width = 1600, .height = 1300, .exp_def = 0x0320, .hts_def = (0x0388 * 2),/* Registers 0x380c / 0x380d * 2 */ .vts_def = 0x5c2, /* Registers 0x380e / 0x380f * 60fps for 10bpp */ .crop = { .left = OV2311_PIXEL_ARRAY_LEFT, .top = OV2311_PIXEL_ARRAY_TOP, .width = 1600, .height = 1300 }, .reg_list = ov2311_1600x1300_regs, }, { .width = 1600, .height = 1080, .exp_def = 0x0320, .hts_def = (0x0388 * 2),/* Registers 0x380c / 0x380d * 2 */ .vts_def = 0x5c2, /* Registers 0x380e / 0x380f * 60fps for 10bpp */ .crop = { .left = OV2311_PIXEL_ARRAY_LEFT, .top = 110 + OV2311_PIXEL_ARRAY_TOP, .width = 1600, .height = 1080 }, .reg_list = ov2311_1600x1080_regs, }, }; static const s64 link_freq_menu_items[] = { OV2311_LINK_FREQ }; static const char * const ov2311_test_pattern_menu[] = { "Disabled", "Vertical Color Bar Type 1", "Vertical Color Bar Type 2", "Vertical Color Bar Type 3", "Vertical Color Bar Type 4" }; /* Write registers up to 4 at a time */ static int ov2311_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; 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) return -EIO; return 0; } static int ov2311_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 = ov2311_write_reg(client, regs[i].addr, OV2311_REG_VALUE_08BIT, regs[i].val); return ret; } /* Read registers up to 4 at a time */ static int ov2311_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)) return -EIO; *val = be32_to_cpu(data_be); return 0; } static int ov2311_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct ov2311 *ov2311 = to_ov2311(sd); const struct ov2311_mode *mode; s64 h_blank, vblank_def, pixel_rate; mutex_lock(&ov2311->mutex); mode = v4l2_find_nearest_size(supported_modes, ARRAY_SIZE(supported_modes), width, height, fmt->format.width, fmt->format.height); if (fmt->format.code != MEDIA_BUS_FMT_Y8_1X8) fmt->format.code = MEDIA_BUS_FMT_Y10_1X10; fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; fmt->format.colorspace = V4L2_COLORSPACE_RAW; fmt->format.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace); fmt->format.quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->format.colorspace, fmt->format.ycbcr_enc); fmt->format.xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { *v4l2_subdev_state_get_format(sd_state, fmt->pad) = fmt->format; } else { ov2311->cur_mode = mode; ov2311->code = fmt->format.code; h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(ov2311->hblank, h_blank, h_blank, 1, h_blank); __v4l2_ctrl_s_ctrl(ov2311->hblank, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(ov2311->vblank, vblank_def, OV2311_VTS_MAX - mode->height, 1, vblank_def); __v4l2_ctrl_s_ctrl(ov2311->vblank, vblank_def); pixel_rate = (fmt->format.code == MEDIA_BUS_FMT_Y10_1X10) ? OV2311_PIXEL_RATE_10BIT : OV2311_PIXEL_RATE_8BIT; __v4l2_ctrl_modify_range(ov2311->pixel_rate, pixel_rate, pixel_rate, 1, pixel_rate); } mutex_unlock(&ov2311->mutex); return 0; } static int ov2311_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct ov2311 *ov2311 = to_ov2311(sd); const struct ov2311_mode *mode = ov2311->cur_mode; mutex_lock(&ov2311->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { fmt->format = *v4l2_subdev_state_get_format(sd_state, fmt->pad); } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = ov2311->code; fmt->format.field = V4L2_FIELD_NONE; fmt->format.colorspace = V4L2_COLORSPACE_SRGB; fmt->format.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace); fmt->format.quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->format.colorspace, fmt->format.ycbcr_enc); fmt->format.xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace); } mutex_unlock(&ov2311->mutex); return 0; } static int ov2311_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { switch (code->index) { default: return -EINVAL; case 0: code->code = MEDIA_BUS_FMT_Y10_1X10; break; case 1: code->code = MEDIA_BUS_FMT_Y8_1X8; break; } return 0; } static int ov2311_enum_frame_sizes(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_Y10_1X10 && fse->code != MEDIA_BUS_FMT_Y8_1X8) 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 ov2311_enable_test_pattern(struct ov2311 *ov2311, u32 pattern) { u32 val; if (pattern) val = (pattern - 1) | OV2311_TEST_PATTERN_ENABLE; else val = OV2311_TEST_PATTERN_DISABLE; return ov2311_write_reg(ov2311->client, OV2311_REG_TEST_PATTERN, OV2311_REG_VALUE_08BIT, val); } static const struct v4l2_rect * __ov2311_get_pad_crop(struct ov2311 *ov2311, struct v4l2_subdev_state *sd_state, unsigned int pad, enum v4l2_subdev_format_whence which) { switch (which) { case V4L2_SUBDEV_FORMAT_TRY: return v4l2_subdev_state_get_crop(sd_state, pad); case V4L2_SUBDEV_FORMAT_ACTIVE: return &ov2311->cur_mode->crop; } return NULL; } static int ov2311_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { switch (sel->target) { case V4L2_SEL_TGT_CROP: { struct ov2311 *ov2311 = to_ov2311(sd); mutex_lock(&ov2311->mutex); sel->r = *__ov2311_get_pad_crop(ov2311, sd_state, sel->pad, sel->which); mutex_unlock(&ov2311->mutex); return 0; } case V4L2_SEL_TGT_NATIVE_SIZE: sel->r.top = 0; sel->r.left = 0; sel->r.width = OV2311_NATIVE_WIDTH; sel->r.height = OV2311_NATIVE_HEIGHT; return 0; case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: sel->r.top = OV2311_PIXEL_ARRAY_TOP; sel->r.left = OV2311_PIXEL_ARRAY_LEFT; sel->r.width = OV2311_PIXEL_ARRAY_WIDTH; sel->r.height = OV2311_PIXEL_ARRAY_HEIGHT; return 0; } return -EINVAL; } static int ov2311_start_stream(struct ov2311 *ov2311) { int ret; ret = ov2311_write_array(ov2311->client, ov2311_common_regs); if (ret) return ret; ret = ov2311_write_array(ov2311->client, ov2311->cur_mode->reg_list); if (ret) return ret; if (ov2311->code == MEDIA_BUS_FMT_Y10_1X10) ret = ov2311_write_array(ov2311->client, op_10bit); else ret = ov2311_write_array(ov2311->client, op_8bit); if (ret) return ret; /* In case these controls are set before streaming */ mutex_unlock(&ov2311->mutex); ret = v4l2_ctrl_handler_setup(&ov2311->ctrl_handler); mutex_lock(&ov2311->mutex); if (ret) return ret; return ov2311_write_reg(ov2311->client, OV2311_REG_CTRL_MODE, OV2311_REG_VALUE_08BIT, OV2311_MODE_STREAMING); } static int ov2311_stop_stream(struct ov2311 *ov2311) { return ov2311_write_reg(ov2311->client, OV2311_REG_CTRL_MODE, OV2311_REG_VALUE_08BIT, OV2311_MODE_SW_STANDBY); } static int ov2311_s_stream(struct v4l2_subdev *sd, int enable) { struct ov2311 *ov2311 = to_ov2311(sd); struct i2c_client *client = ov2311->client; int ret = 0; mutex_lock(&ov2311->mutex); if (ov2311->streaming == enable) { mutex_unlock(&ov2311->mutex); return 0; } if (enable) { ret = pm_runtime_resume_and_get(&client->dev); if (ret < 0) goto unlock_and_return; ret = ov2311_start_stream(ov2311); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { ov2311_stop_stream(ov2311); pm_runtime_put(&client->dev); } ov2311->streaming = enable; unlock_and_return: mutex_unlock(&ov2311->mutex); return ret; } static int ov2311_power_on(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov2311 *ov2311 = to_ov2311(sd); int ret; ret = clk_set_rate(ov2311->xvclk, OV2311_XVCLK_FREQ); if (ret < 0) dev_warn(dev, "Failed to set xvclk rate (24MHz)\n"); if (clk_get_rate(ov2311->xvclk) != OV2311_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 24MHz - rate is %lu\n", clk_get_rate(ov2311->xvclk)); ret = clk_prepare_enable(ov2311->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } gpiod_set_value_cansleep(ov2311->reset_gpio, 0); ret = regulator_bulk_enable(OV2311_NUM_SUPPLIES, ov2311->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } gpiod_set_value_cansleep(ov2311->reset_gpio, 1); usleep_range(500, 1000); gpiod_set_value_cansleep(ov2311->pwdn_gpio, 1); usleep_range(1000, 2000); return 0; disable_clk: clk_disable_unprepare(ov2311->xvclk); return ret; } static int ov2311_power_off(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov2311 *ov2311 = to_ov2311(sd); gpiod_set_value_cansleep(ov2311->pwdn_gpio, 0); clk_disable_unprepare(ov2311->xvclk); gpiod_set_value_cansleep(ov2311->reset_gpio, 0); regulator_bulk_disable(OV2311_NUM_SUPPLIES, ov2311->supplies); return 0; } static int ov2311_runtime_resume(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov2311 *ov2311 = to_ov2311(sd); int ret; if (ov2311->streaming) { ret = ov2311_start_stream(ov2311); if (ret) goto error; } return 0; error: ov2311_stop_stream(ov2311); ov2311->streaming = 0; return ret; } static int ov2311_runtime_suspend(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov2311 *ov2311 = to_ov2311(sd); if (ov2311->streaming) ov2311_stop_stream(ov2311); return 0; } static int ov2311_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov2311 *ov2311 = to_ov2311(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_state_get_format(fh->state, 0); const struct ov2311_mode *def_mode = &supported_modes[0]; mutex_lock(&ov2311->mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = MEDIA_BUS_FMT_Y10_1X10; try_fmt->field = V4L2_FIELD_NONE; try_fmt->colorspace = V4L2_COLORSPACE_RAW; try_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(try_fmt->colorspace); try_fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, try_fmt->colorspace, try_fmt->ycbcr_enc); try_fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(try_fmt->colorspace); mutex_unlock(&ov2311->mutex); /* No crop or compose */ return 0; } static const struct dev_pm_ops ov2311_pm_ops = { SET_RUNTIME_PM_OPS(ov2311_runtime_suspend, ov2311_runtime_resume, NULL) SET_RUNTIME_PM_OPS(ov2311_power_off, ov2311_power_on, NULL) }; static const struct v4l2_subdev_internal_ops ov2311_internal_ops = { .open = ov2311_open, }; static const struct v4l2_subdev_core_ops ov2311_core_ops = { .subscribe_event = v4l2_ctrl_subdev_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe, }; static const struct v4l2_subdev_video_ops ov2311_video_ops = { .s_stream = ov2311_s_stream, }; static const struct v4l2_subdev_pad_ops ov2311_pad_ops = { .enum_mbus_code = ov2311_enum_mbus_code, .enum_frame_size = ov2311_enum_frame_sizes, .get_fmt = ov2311_get_fmt, .set_fmt = ov2311_set_fmt, .get_selection = ov2311_get_selection, }; static const struct v4l2_subdev_ops ov2311_subdev_ops = { .core = &ov2311_core_ops, .video = &ov2311_video_ops, .pad = &ov2311_pad_ops, }; static int ov2311_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov2311 *ov2311 = container_of(ctrl->handler, struct ov2311, ctrl_handler); struct i2c_client *client = ov2311->client; s64 max; int ret = 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 = ov2311->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(ov2311->exposure, ov2311->exposure->minimum, max, ov2311->exposure->step, ov2311->exposure->default_value); break; } if (pm_runtime_get(&client->dev) <= 0) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: ret = ov2311_write_reg(ov2311->client, OV2311_REG_EXPOSURE, OV2311_REG_VALUE_16BIT, ctrl->val); break; case V4L2_CID_ANALOGUE_GAIN: ret = ov2311_write_reg(ov2311->client, OV2311_REG_GAIN_H, OV2311_REG_VALUE_08BIT, (ctrl->val >> OV2311_GAIN_H_SHIFT) & OV2311_GAIN_H_MASK); ret |= ov2311_write_reg(ov2311->client, OV2311_REG_GAIN_L, OV2311_REG_VALUE_08BIT, ctrl->val & OV2311_GAIN_L_MASK); break; case V4L2_CID_VBLANK: ret = ov2311_write_reg(ov2311->client, OV2311_REG_VTS, OV2311_REG_VALUE_16BIT, ctrl->val + ov2311->cur_mode->height); break; case V4L2_CID_TEST_PATTERN: ret = ov2311_enable_test_pattern(ov2311, ctrl->val); break; case V4L2_CID_HFLIP: ret = ov2311_write_reg(ov2311->client, OV2311_REG_H_FLIP, OV2311_REG_VALUE_08BIT, ctrl->val ? OV2311_FLIP_BIT : 0); break; case V4L2_CID_VFLIP: ret = ov2311_write_reg(ov2311->client, OV2311_REG_V_FLIP, OV2311_REG_VALUE_08BIT, ctrl->val ? OV2311_FLIP_BIT : 0); 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 ov2311_ctrl_ops = { .s_ctrl = ov2311_set_ctrl, }; static int ov2311_initialize_controls(struct ov2311 *ov2311) { struct v4l2_fwnode_device_properties props; const struct ov2311_mode *mode; struct v4l2_ctrl_handler *handler; struct v4l2_ctrl *ctrl; s64 exposure_max, vblank_def; u32 h_blank; int ret; handler = &ov2311->ctrl_handler; mode = ov2311->cur_mode; ret = v4l2_ctrl_handler_init(handler, 11); if (ret) return ret; handler->lock = &ov2311->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; ov2311->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, OV2311_PIXEL_RATE_10BIT, OV2311_PIXEL_RATE_10BIT, 1, OV2311_PIXEL_RATE_10BIT); h_blank = mode->hts_def - mode->width; ov2311->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (ov2311->hblank) ov2311->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; ov2311->vblank = v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_VBLANK, vblank_def, OV2311_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 4; ov2311->exposure = v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_EXPOSURE, OV2311_EXPOSURE_MIN, exposure_max, OV2311_EXPOSURE_STEP, mode->exp_def); v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, OV2311_GAIN_MIN, OV2311_GAIN_MAX, OV2311_GAIN_STEP, OV2311_GAIN_DEFAULT); v4l2_ctrl_new_std_menu_items(handler, &ov2311_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov2311_test_pattern_menu) - 1, 0, 0, ov2311_test_pattern_menu); v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); ret = v4l2_fwnode_device_parse(&ov2311->client->dev, &props); if (ret) goto err_free_handler; ret = v4l2_ctrl_new_fwnode_properties(handler, &ov2311_ctrl_ops, &props); if (ret) goto err_free_handler; if (handler->error) { ret = handler->error; dev_err(&ov2311->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } ov2311->subdev.ctrl_handler = handler; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int ov2311_check_sensor_id(struct ov2311 *ov2311, struct i2c_client *client) { struct device *dev = &ov2311->client->dev; u32 id = 0, id_msb = 0; int ret; ret = ov2311_read_reg(client, OV2311_REG_CHIP_ID + 1, OV2311_REG_VALUE_08BIT, &id); if (!ret) ret = ov2311_read_reg(client, OV2311_REG_CHIP_ID, OV2311_REG_VALUE_08BIT, &id_msb); id |= (id_msb << 8); if (ret || id != CHIP_ID) { dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret); return -ENODEV; } dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID); return 0; } static int ov2311_configure_regulators(struct ov2311 *ov2311) { unsigned int i; for (i = 0; i < OV2311_NUM_SUPPLIES; i++) ov2311->supplies[i].supply = ov2311_supply_names[i]; return devm_regulator_bulk_get(&ov2311->client->dev, OV2311_NUM_SUPPLIES, ov2311->supplies); } static int ov2311_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct ov2311 *ov2311; struct v4l2_subdev *sd; int ret; ov2311 = devm_kzalloc(dev, sizeof(*ov2311), GFP_KERNEL); if (!ov2311) return -ENOMEM; ov2311->client = client; ov2311->cur_mode = &supported_modes[0]; ov2311->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(ov2311->xvclk)) { dev_err(dev, "Failed to get xvclk\n"); return -EINVAL; } ov2311->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ov2311->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios\n"); ov2311->pwdn_gpio = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(ov2311->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); ret = ov2311_configure_regulators(ov2311); if (ret) { dev_err(dev, "Failed to get power regulators\n"); return ret; } mutex_init(&ov2311->mutex); sd = &ov2311->subdev; v4l2_i2c_subdev_init(sd, client, &ov2311_subdev_ops); ret = ov2311_initialize_controls(ov2311); if (ret) goto err_destroy_mutex; ret = ov2311_power_on(&client->dev); if (ret) goto err_free_handler; ret = ov2311_check_sensor_id(ov2311, client); if (ret) goto err_power_off; sd->internal_ops = &ov2311_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ov2311->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &ov2311->pad); if (ret < 0) goto err_power_off; ret = v4l2_async_register_subdev(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); return 0; err_clean_entity: media_entity_cleanup(&sd->entity); err_power_off: ov2311_power_off(&client->dev); err_free_handler: v4l2_ctrl_handler_free(&ov2311->ctrl_handler); err_destroy_mutex: mutex_destroy(&ov2311->mutex); return ret; } static void ov2311_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov2311 *ov2311 = to_ov2311(sd); v4l2_async_unregister_subdev(sd); media_entity_cleanup(&sd->entity); v4l2_ctrl_handler_free(&ov2311->ctrl_handler); mutex_destroy(&ov2311->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) ov2311_power_off(&client->dev); pm_runtime_set_suspended(&client->dev); } static const struct of_device_id ov2311_of_match[] = { { .compatible = "ovti,ov2311" }, {}, }; MODULE_DEVICE_TABLE(of, ov2311_of_match); static const struct i2c_device_id ov2311_match_id[] = { { "ovti,ov2311", 0 }, { }, }; static struct i2c_driver ov2311_i2c_driver = { .driver = { .name = OV2311_NAME, .pm = &ov2311_pm_ops, .of_match_table = of_match_ptr(ov2311_of_match), }, .probe = &ov2311_probe, .remove = &ov2311_remove, .id_table = ov2311_match_id, }; module_i2c_driver(ov2311_i2c_driver); MODULE_AUTHOR("Dave Stevenson