// SPDX-License-Identifier: GPL-2.0 /* * ov2680 driver * * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd. * V0.0X01.0X02 fix mclk issue when probe multiple camera. * V0.0X01.0X03 add enum_frame_interval function. * V0.0X01.0X04 add quick stream on/off * V0.0X01.0X05 add function g_mbus_config */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* verify default register values */ //#define CHECK_REG_VALUE #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x5) #ifndef V4L2_CID_DIGITAL_GAIN #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN #endif /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ #define MIPI_FREQ 330000000U #define OV2680_PIXEL_RATE (330000000LL * 1LL * 2LL / 10) #define OV2680_XVCLK_FREQ 24000000 #define CHIP_ID 0x2680 #define OV2680_REG_CHIP_ID 0x300a #define OV2680_REG_CTRL_MODE 0x0100 #define OV2680_MODE_SW_STANDBY 0x00 #define OV2680_MODE_STREAMING 0x01 #define OV2680_REG_EXPOSURE 0x3500 #define OV2680_EXPOSURE_MIN 4 #define OV2680_EXPOSURE_STEP 1 #define OV2680_VTS_MAX 0x7fff #define OV2680_REG_ANALOG_GAIN 0x350a #define ANALOG_GAIN_MIN 0x10 #define ANALOG_GAIN_MAX 0xf8 #define ANALOG_GAIN_STEP 1 #define ANALOG_GAIN_DEFAULT 0xf8 #define OV2680_REG_GAIN_H 0x350a #define OV2680_REG_GAIN_L 0x350b #define OV2680_GAIN_L_MASK 0xff #define OV2680_GAIN_H_MASK 0x07 #define OV2680_DIGI_GAIN_H_SHIFT 8 #define OV2680_DIGI_GAIN_MIN 0 #define OV2680_DIGI_GAIN_MAX (0x4000 - 1) #define OV2680_DIGI_GAIN_STEP 1 #define OV2680_DIGI_GAIN_DEFAULT 1024 #define OV2680_REG_TEST_PATTERN 0x5080 #define OV2680_TEST_PATTERN_ENABLE 0x80 #define OV2680_TEST_PATTERN_DISABLE 0x0 #define OV2680_REG_VTS 0x380e #define REG_NULL 0xFFFF #define OV2680_REG_VALUE_08BIT 1 #define OV2680_REG_VALUE_16BIT 2 #define OV2680_REG_VALUE_24BIT 3 #define OV2680_LANES 1 #define OV2680_BITS_PER_SAMPLE 10 #define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" #define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" #define OV2680_NAME "ov2680" static const char * const ov2680_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define OV2680_NUM_SUPPLIES ARRAY_SIZE(ov2680_supply_names) struct regval { u16 addr; u8 val; }; struct ov2680_mode { u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; const struct regval *reg_list; }; struct ov2680 { struct i2c_client *client; struct clk *xvclk; struct gpio_desc *power_gpio; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[OV2680_NUM_SUPPLIES]; struct pinctrl *pinctrl; struct pinctrl_state *pins_default; struct pinctrl_state *pins_sleep; struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *exposure; struct v4l2_ctrl *anal_gain; struct v4l2_ctrl *digi_gain; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *test_pattern; struct mutex mutex; bool streaming; const struct ov2680_mode *cur_mode; unsigned int lane_num; unsigned int cfg_num; unsigned int pixel_rate; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; }; #define to_ov2680(sd) container_of(sd, struct ov2680, subdev) /* * Xclk 24Mhz * Pclk 66Mhz * linelength 1700(0x6a4) * framelength 1294(0x50e) * grabwindow_width 1600 * grabwindow_height 1200 * max_framerate 30fps * mipi_datarate per lane 660Mbps */ static const struct regval ov2680_global_regs[] = { {0x0100, 0x00}, {0x0103, 0x01}, {0x3002, 0x00}, {0x3016, 0x1c}, {0x3018, 0x44}, {0x3020, 0x00}, {0x3080, 0x02}, {0x3082, 0x37}, {0x3084, 0x09}, {0x3085, 0x04}, {0x3086, 0x01}, {0x3501, 0x26}, {0x3502, 0x40}, {0x3503, 0x03}, {0x350b, 0x36}, {0x3600, 0xb4}, {0x3603, 0x35}, {0x3604, 0x24}, {0x3605, 0x00}, {0x3620, 0x26}, {0x3621, 0x37}, {0x3622, 0x04}, {0x3628, 0x00}, {0x3705, 0x3c}, {0x370c, 0x50}, {0x370d, 0xc0}, {0x3718, 0x88}, {0x3720, 0x00}, {0x3721, 0x00}, {0x3722, 0x00}, {0x3723, 0x00}, {0x3738, 0x00}, {0x370a, 0x23}, {0x3717, 0x58}, {0x3781, 0x80}, {0x3784, 0x0c}, {0x3789, 0x60}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x00}, {0x3804, 0x06}, {0x3805, 0x4f}, {0x3806, 0x04}, {0x3807, 0xbf}, {0x3808, 0x03}, {0x3809, 0x20}, {0x380a, 0x02}, {0x380b, 0x58}, {0x380c, 0x06}, {0x380d, 0xac}, {0x380e, 0x02}, {0x380f, 0x84}, {0x3810, 0x00}, {0x3811, 0x04}, {0x3812, 0x00}, {0x3813, 0x04}, {0x3814, 0x31}, {0x3815, 0x31}, {0x3819, 0x04}, {0x3820, 0xc2}, {0x3821, 0x01}, {0x4000, 0x81}, {0x4001, 0x40}, {0x4008, 0x00}, {0x4009, 0x03}, {0x4602, 0x02}, {0x481f, 0x36}, {0x4825, 0x36}, {0x4837, 0x30}, {0x5002, 0x30}, {0x5080, 0x00}, {0x5081, 0x41}, {REG_NULL, 0x00}, //{0x0100, 0x01}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz * Pclk 66Mhz * linelength 1700(0x6a4) * framelength 1294(0x50e) * grabwindow_width 1600 * grabwindow_height 1200 * max_framerate 30fps * mipi_datarate per lane 660Mbps */ static const struct regval ov2680_1600x1200_regs[] = { // 1600x1200 30fps 1 lane MIPI 660Mbps/lane {0x3086, 0x00}, {0x3620, 0x26}, {0x3621, 0x37}, {0x3622, 0x04}, {0x370a, 0x21}, {0x370d, 0xc0}, {0x3718, 0x88}, {0x3721, 0x00}, {0x3722, 0x00}, {0x3723, 0x00}, {0x3738, 0x00}, {0x3803, 0x00}, {0x3807, 0xbf}, {0x3808, 0x06}, {0x3809, 0x40}, {0x380a, 0x04}, {0x380b, 0xb0}, {0x380c, 0x06}, {0x380d, 0xa4}, {0x380e, 0x05}, {0x380f, 0x0e}, {0x3811, 0x08}, {0x3813, 0x08}, {0x3814, 0x11}, {0x3815, 0x11}, {0x3820, 0xc0}, {0x3821, 0x00}, {0x4008, 0x02}, {0x4009, 0x09}, {0x4837, 0x18}, //{0x0100, 0x01}, {REG_NULL, 0x00}, }; static const struct ov2680_mode supported_modes_1lane[] = { { .width = 1600, .height = 1200, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x0500, .hts_def = 0x06a4, .vts_def = 0x050e, .reg_list = ov2680_1600x1200_regs, }, }; static const struct ov2680_mode *supported_modes; static const s64 link_freq_menu_items[] = { MIPI_FREQ }; static const char * const ov2680_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 ov2680_write_reg(struct i2c_client *client, u16 reg, u32 len, u32 val) { u32 buf_i, val_i; u8 buf[6]; u8 *val_p; __be32 val_be; dev_dbg(&client->dev, "write reg(0x%x val:0x%06x)!\n", reg, val); if (len > 4) return -EINVAL; buf[0] = reg >> 8; buf[1] = reg & 0xff; val_be = cpu_to_be32(val); val_p = (u8 *)&val_be; buf_i = 2; val_i = 4 - len; while (val_i < 4) buf[buf_i++] = val_p[val_i++]; if (i2c_master_send(client, buf, len + 2) != len + 2) { dev_err(&client->dev, "write reg(0x%x val:0x%x)failed !\n", reg, val); return -EIO; } return 0; } static int ov2680_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 = ov2680_write_reg(client, regs[i].addr, OV2680_REG_VALUE_08BIT, regs[i].val); return ret; } /* Read registers up to 4 at a time */ static int ov2680_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; } /* Check Register value */ #ifdef CHECK_REG_VALUE static int ov2680_reg_verify(struct i2c_client *client, const struct regval *regs) { u32 i; int ret = 0; u32 value; for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) { ret = ov2680_read_reg(client, regs[i].addr, OV2680_REG_VALUE_08BIT, &value); if (value != regs[i].val) { dev_info(&client->dev, "%s:0x%04x is 0x%08x instead of 0x%08x\n", __func__, regs[i].addr, value, regs[i].val); } } return ret; } #endif static int ov2680_get_reso_dist(const struct ov2680_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct ov2680_mode * ov2680_find_best_fit(struct ov2680 *ov2680, struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *framefmt = &fmt->format; int dist; int cur_best_fit = 0; int cur_best_fit_dist = -1; unsigned int i; for (i = 0; i < ov2680->cfg_num; i++) { dist = ov2680_get_reso_dist(&supported_modes[i], framefmt); if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { cur_best_fit_dist = dist; cur_best_fit = i; } } return &supported_modes[cur_best_fit]; } static int ov2680_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct ov2680 *ov2680 = to_ov2680(sd); const struct ov2680_mode *mode; s64 h_blank, vblank_def; mutex_lock(&ov2680->mutex); mode = ov2680_find_best_fit(ov2680, fmt); fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10; fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; #else mutex_unlock(&ov2680->mutex); return -ENOTTY; #endif } else { ov2680->cur_mode = mode; h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(ov2680->hblank, h_blank, h_blank, 1, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(ov2680->vblank, vblank_def, OV2680_VTS_MAX - mode->height, 1, vblank_def); } mutex_unlock(&ov2680->mutex); return 0; } static int ov2680_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct ov2680 *ov2680 = to_ov2680(sd); const struct ov2680_mode *mode = ov2680->cur_mode; mutex_lock(&ov2680->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); #else mutex_unlock(&ov2680->mutex); return -ENOTTY; #endif } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10; fmt->format.field = V4L2_FIELD_NONE; } mutex_unlock(&ov2680->mutex); return 0; } static int ov2680_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { if (code->index != 0) return -EINVAL; code->code = MEDIA_BUS_FMT_SBGGR10_1X10; return 0; } static int ov2680_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { struct ov2680 *ov2680 = to_ov2680(sd); if (fse->index >= ov2680->cfg_num) return -EINVAL; if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10) 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 ov2680_enable_test_pattern(struct ov2680 *ov2680, u32 pattern) { u32 val; if (pattern) val = (pattern - 1) | OV2680_TEST_PATTERN_ENABLE; else val = OV2680_TEST_PATTERN_DISABLE; return ov2680_write_reg(ov2680->client, OV2680_REG_TEST_PATTERN, OV2680_REG_VALUE_08BIT, val); } static int ov2680_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct ov2680 *ov2680 = to_ov2680(sd); const struct ov2680_mode *mode = ov2680->cur_mode; mutex_lock(&ov2680->mutex); fi->interval = mode->max_fps; mutex_unlock(&ov2680->mutex); return 0; } static void ov2680_get_module_inf(struct ov2680 *ov2680, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strlcpy(inf->base.sensor, OV2680_NAME, sizeof(inf->base.sensor)); strlcpy(inf->base.module, ov2680->module_name, sizeof(inf->base.module)); strlcpy(inf->base.lens, ov2680->len_name, sizeof(inf->base.lens)); } static long ov2680_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct ov2680 *ov2680 = to_ov2680(sd); long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: ov2680_get_module_inf(ov2680, (struct rkmodule_inf *)arg); break; case RKMODULE_SET_QUICK_STREAM: stream = *((u32 *)arg); if (stream) ret = ov2680_write_reg(ov2680->client, OV2680_REG_CTRL_MODE, OV2680_REG_VALUE_08BIT, OV2680_MODE_STREAMING); else ret = ov2680_write_reg(ov2680->client, OV2680_REG_CTRL_MODE, OV2680_REG_VALUE_08BIT, OV2680_MODE_SW_STANDBY); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long ov2680_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; struct rkmodule_awb_cfg *cfg; long ret; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = ov2680_ioctl(sd, cmd, inf); if (!ret) ret = copy_to_user(up, inf, sizeof(*inf)); kfree(inf); break; case RKMODULE_AWB_CFG: cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); if (!cfg) { ret = -ENOMEM; return ret; } ret = copy_from_user(cfg, up, sizeof(*cfg)); if (!ret) ret = ov2680_ioctl(sd, cmd, cfg); kfree(cfg); break; case RKMODULE_SET_QUICK_STREAM: ret = copy_from_user(&stream, up, sizeof(u32)); if (!ret) ret = ov2680_ioctl(sd, cmd, &stream); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static int __ov2680_start_stream(struct ov2680 *ov2680) { int ret; ret = ov2680_write_array(ov2680->client, ov2680->cur_mode->reg_list); if (ret) return ret; #ifdef CHECK_REG_VALUE usleep_range(10000, 20000); /* verify default values to make sure everything has */ /* been written correctly as expected */ dev_info(&ov2680->client->dev, "%s:Check register value!\n", __func__); ret = ov2680_reg_verify(ov2680->client, ov2680_global_regs); if (ret) return ret; ret = ov2680_reg_verify(ov2680->client, ov2680->cur_mode->reg_list); if (ret) return ret; #endif /* In case these controls are set before streaming */ mutex_unlock(&ov2680->mutex); ret = v4l2_ctrl_handler_setup(&ov2680->ctrl_handler); mutex_lock(&ov2680->mutex); if (ret) return ret; ret = ov2680_write_reg(ov2680->client, OV2680_REG_CTRL_MODE, OV2680_REG_VALUE_08BIT, OV2680_MODE_STREAMING); return ret; } static int __ov2680_stop_stream(struct ov2680 *ov2680) { return ov2680_write_reg(ov2680->client, OV2680_REG_CTRL_MODE, OV2680_REG_VALUE_08BIT, OV2680_MODE_SW_STANDBY); } static int ov2680_s_stream(struct v4l2_subdev *sd, int on) { struct ov2680 *ov2680 = to_ov2680(sd); struct i2c_client *client = ov2680->client; int ret = 0; dev_info(&client->dev, "%s: on: %d, %dx%d@%d\n", __func__, on, ov2680->cur_mode->width, ov2680->cur_mode->height, DIV_ROUND_CLOSEST(ov2680->cur_mode->max_fps.denominator, ov2680->cur_mode->max_fps.numerator)); mutex_lock(&ov2680->mutex); on = !!on; if (on == ov2680->streaming) goto unlock_and_return; if (on) { dev_info(&client->dev, "stream on!!!\n"); ret = __ov2680_start_stream(ov2680); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { dev_info(&client->dev, "stream off!!!\n"); __ov2680_stop_stream(ov2680); } ov2680->streaming = on; unlock_and_return: mutex_unlock(&ov2680->mutex); return ret; } /* Calculate the delay in us by clock rate and clock cycles */ static inline u32 ov2680_cal_delay(u32 cycles) { return DIV_ROUND_UP(cycles, OV2680_XVCLK_FREQ / 1000 / 1000); } static int __ov2680_power_on(struct ov2680 *ov2680) { int ret; u32 delay_us; struct device *dev = &ov2680->client->dev; if (!IS_ERR(ov2680->power_gpio)) gpiod_set_value_cansleep(ov2680->power_gpio, 1); usleep_range(1000, 2000); if (!IS_ERR_OR_NULL(ov2680->pins_default)) { ret = pinctrl_select_state(ov2680->pinctrl, ov2680->pins_default); if (ret < 0) dev_err(dev, "could not set pins\n"); } ret = clk_set_rate(ov2680->xvclk, OV2680_XVCLK_FREQ); if (ret < 0) dev_warn(dev, "Failed to set xvclk rate (24MHz)\n"); if (clk_get_rate(ov2680->xvclk) != OV2680_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); ret = clk_prepare_enable(ov2680->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } if (!IS_ERR(ov2680->reset_gpio)) gpiod_set_value_cansleep(ov2680->reset_gpio, 1); ret = regulator_bulk_enable(OV2680_NUM_SUPPLIES, ov2680->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } if (!IS_ERR(ov2680->reset_gpio)) gpiod_set_value_cansleep(ov2680->reset_gpio, 0); if (!IS_ERR(ov2680->pwdn_gpio)) gpiod_set_value_cansleep(ov2680->pwdn_gpio, 1); /* 8192 cycles prior to first SCCB transaction */ delay_us = ov2680_cal_delay(8192); usleep_range(delay_us, delay_us * 2); return 0; disable_clk: clk_disable_unprepare(ov2680->xvclk); return ret; } static void __ov2680_power_off(struct ov2680 *ov2680) { int ret; struct device *dev = &ov2680->client->dev; if (!IS_ERR(ov2680->pwdn_gpio)) gpiod_set_value_cansleep(ov2680->pwdn_gpio, 0); clk_disable_unprepare(ov2680->xvclk); if (!IS_ERR(ov2680->reset_gpio)) gpiod_set_value_cansleep(ov2680->reset_gpio, 1); if (!IS_ERR_OR_NULL(ov2680->pins_sleep)) { ret = pinctrl_select_state(ov2680->pinctrl, ov2680->pins_sleep); if (ret < 0) dev_dbg(dev, "could not set pins\n"); } if (!IS_ERR(ov2680->power_gpio)) gpiod_set_value_cansleep(ov2680->power_gpio, 0); regulator_bulk_disable(OV2680_NUM_SUPPLIES, ov2680->supplies); } static int ov2680_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov2680 *ov2680 = to_ov2680(sd); return __ov2680_power_on(ov2680); } static int ov2680_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov2680 *ov2680 = to_ov2680(sd); __ov2680_power_off(ov2680); return 0; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int ov2680_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov2680 *ov2680 = to_ov2680(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); const struct ov2680_mode *def_mode = &supported_modes[0]; mutex_lock(&ov2680->mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&ov2680->mutex); /* No crop or compose */ return 0; } #endif static int ov2680_init(struct v4l2_subdev *sd) { int ret; struct ov2680 *ov2680 = to_ov2680(sd); struct i2c_client *client = ov2680->client; dev_info(&client->dev, "%s(%d)\n", __func__, __LINE__); ret = ov2680_write_array(ov2680->client, ov2680_global_regs); return ret; } static int ov2680_power(struct v4l2_subdev *sd, int on) { int ret; struct ov2680 *ov2680 = to_ov2680(sd); struct i2c_client *client = ov2680->client; struct device *dev = &ov2680->client->dev; dev_info(&client->dev, "%s(%d) on(%d)\n", __func__, __LINE__, on); if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); return ret; } ret = ov2680_init(sd); usleep_range(5000, 10000); if (ret) dev_err(dev, "init error\n"); } else { pm_runtime_put(&client->dev); } return 0; } static int ov2680_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_interval_enum *fie) { struct ov2680 *ov2680 = to_ov2680(sd); if (fie->index >= ov2680->cfg_num) return -EINVAL; if (fie->code != MEDIA_BUS_FMT_SBGGR10_1X10) return -EINVAL; fie->width = supported_modes[fie->index].width; fie->height = supported_modes[fie->index].height; fie->interval = supported_modes[fie->index].max_fps; return 0; } static int ov2680_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *config) { u32 val = 0; val = 1 << (OV2680_LANES - 1) | V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; config->type = V4L2_MBUS_CSI2; config->flags = val; return 0; } static const struct dev_pm_ops ov2680_pm_ops = { SET_RUNTIME_PM_OPS(ov2680_runtime_suspend, ov2680_runtime_resume, NULL) }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops ov2680_internal_ops = { .open = ov2680_open, }; #endif static const struct v4l2_subdev_core_ops ov2680_core_ops = { .ioctl = ov2680_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = ov2680_compat_ioctl32, #endif .s_power = ov2680_power, }; static const struct v4l2_subdev_video_ops ov2680_video_ops = { .s_stream = ov2680_s_stream, .g_frame_interval = ov2680_g_frame_interval, .g_mbus_config = ov2680_g_mbus_config, }; static const struct v4l2_subdev_pad_ops ov2680_pad_ops = { .enum_mbus_code = ov2680_enum_mbus_code, .enum_frame_size = ov2680_enum_frame_sizes, .enum_frame_interval = ov2680_enum_frame_interval, .get_fmt = ov2680_get_fmt, .set_fmt = ov2680_set_fmt, }; static const struct v4l2_subdev_ops ov2680_subdev_ops = { .core = &ov2680_core_ops, .video = &ov2680_video_ops, .pad = &ov2680_pad_ops, }; static int ov2680_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov2680 *ov2680 = container_of(ctrl->handler, struct ov2680, ctrl_handler); struct i2c_client *client = ov2680->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 = ov2680->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(ov2680->exposure, ov2680->exposure->minimum, max, ov2680->exposure->step, ov2680->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(&client->dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: /* 4 least significant bits of expsoure are fractional part */ ret = ov2680_write_reg(ov2680->client, OV2680_REG_EXPOSURE, OV2680_REG_VALUE_24BIT, ctrl->val << 4); break; case V4L2_CID_ANALOGUE_GAIN: ret = ov2680_write_reg(ov2680->client, OV2680_REG_GAIN_L, OV2680_REG_VALUE_08BIT, ctrl->val & OV2680_GAIN_L_MASK); ret |= ov2680_write_reg(ov2680->client, OV2680_REG_GAIN_H, OV2680_REG_VALUE_08BIT, (ctrl->val >> OV2680_DIGI_GAIN_H_SHIFT) & OV2680_GAIN_H_MASK); break; case V4L2_CID_VBLANK: ret = ov2680_write_reg(ov2680->client, OV2680_REG_VTS, OV2680_REG_VALUE_16BIT, ctrl->val + ov2680->cur_mode->height); break; case V4L2_CID_TEST_PATTERN: ret = ov2680_enable_test_pattern(ov2680, ctrl->val); break; default: dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n", __func__, ctrl->id, ctrl->val); break; } pm_runtime_put(&client->dev); return ret; } static const struct v4l2_ctrl_ops ov2680_ctrl_ops = { .s_ctrl = ov2680_set_ctrl, }; static int ov2680_initialize_controls(struct ov2680 *ov2680) { const struct ov2680_mode *mode; struct v4l2_ctrl_handler *handler; struct v4l2_ctrl *ctrl; s64 exposure_max, vblank_def; u32 h_blank; int ret; handler = &ov2680->ctrl_handler; mode = ov2680->cur_mode; ret = v4l2_ctrl_handler_init(handler, 8); if (ret) return ret; handler->lock = &ov2680->mutex; ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 0, 0, link_freq_menu_items); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, ov2680->pixel_rate, 1, ov2680->pixel_rate); h_blank = mode->hts_def - mode->width; ov2680->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (ov2680->hblank) ov2680->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; ov2680->vblank = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, V4L2_CID_VBLANK, vblank_def, OV2680_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 4; ov2680->exposure = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, V4L2_CID_EXPOSURE, OV2680_EXPOSURE_MIN, exposure_max, OV2680_EXPOSURE_STEP, mode->exp_def); ov2680->anal_gain = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, ANALOG_GAIN_MIN, ANALOG_GAIN_MAX, ANALOG_GAIN_STEP, ANALOG_GAIN_DEFAULT); /* Digital gain */ ov2680->digi_gain = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, V4L2_CID_DIGITAL_GAIN, OV2680_DIGI_GAIN_MIN, OV2680_DIGI_GAIN_MAX, OV2680_DIGI_GAIN_STEP, OV2680_DIGI_GAIN_DEFAULT); ov2680->test_pattern = v4l2_ctrl_new_std_menu_items(handler, &ov2680_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov2680_test_pattern_menu) - 1, 0, 0, ov2680_test_pattern_menu); if (handler->error) { ret = handler->error; dev_err(&ov2680->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } ov2680->subdev.ctrl_handler = handler; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int ov2680_check_sensor_id(struct ov2680 *ov2680, struct i2c_client *client) { struct device *dev = &ov2680->client->dev; u32 id = 0; int ret; ret = ov2680_read_reg(client, OV2680_REG_CHIP_ID, OV2680_REG_VALUE_16BIT, &id); if (id != CHIP_ID) { dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret); return -ENODEV; } dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID); return 0; } static int ov2680_configure_regulators(struct ov2680 *ov2680) { unsigned int i; for (i = 0; i < OV2680_NUM_SUPPLIES; i++) ov2680->supplies[i].supply = ov2680_supply_names[i]; return devm_regulator_bulk_get(&ov2680->client->dev, OV2680_NUM_SUPPLIES, ov2680->supplies); } static int ov2680_parse_of(struct ov2680 *ov2680) { struct device *dev = &ov2680->client->dev; struct device_node *endpoint; struct fwnode_handle *fwnode; int rval; endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); if (!endpoint) { dev_err(dev, "Failed to get endpoint\n"); return -EINVAL; } fwnode = of_fwnode_handle(endpoint); rval = fwnode_property_read_u32_array(fwnode, "data-lanes", NULL, 0); if (rval <= 0) { dev_warn(dev, " Get mipi lane num failed!\n"); return -1; } ov2680->lane_num = rval; if (1 == ov2680->lane_num) { ov2680->cur_mode = &supported_modes_1lane[0]; supported_modes = supported_modes_1lane; ov2680->cfg_num = ARRAY_SIZE(supported_modes_1lane); /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ ov2680->pixel_rate = MIPI_FREQ * 2U * ov2680->lane_num / 10U; dev_info(dev, "lane_num(%d) pixel_rate(%u)\n", ov2680->lane_num, ov2680->pixel_rate); } else { dev_err(dev, "unsupported lane_num(%d)\n", ov2680->lane_num); return -1; } return 0; } static int ov2680_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct ov2680 *ov2680; struct v4l2_subdev *sd; char facing[2] = "b"; int ret; dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16, (DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff); ov2680 = devm_kzalloc(dev, sizeof(*ov2680), GFP_KERNEL); if (!ov2680) return -ENOMEM; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &ov2680->module_index); if (ret) { dev_warn(dev, "could not get module index!\n"); ov2680->module_index = 0; } ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &ov2680->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &ov2680->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &ov2680->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } ov2680->client = client; ov2680->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(ov2680->xvclk)) { dev_err(dev, "Failed to get xvclk\n"); return -EINVAL; } ov2680->power_gpio = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW); if (IS_ERR(ov2680->power_gpio)) dev_warn(dev, "Failed to get power-gpios, maybe no use\n"); ov2680->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ov2680->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios, maybe no use\n"); ov2680->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(ov2680->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); ret = ov2680_configure_regulators(ov2680); if (ret) { dev_err(dev, "Failed to get power regulators\n"); return ret; } ret = ov2680_parse_of(ov2680); if (ret != 0) return -EINVAL; ov2680->pinctrl = devm_pinctrl_get(dev); if (!IS_ERR(ov2680->pinctrl)) { ov2680->pins_default = pinctrl_lookup_state(ov2680->pinctrl, OF_CAMERA_PINCTRL_STATE_DEFAULT); if (IS_ERR(ov2680->pins_default)) dev_err(dev, "could not get default pinstate\n"); ov2680->pins_sleep = pinctrl_lookup_state(ov2680->pinctrl, OF_CAMERA_PINCTRL_STATE_SLEEP); if (IS_ERR(ov2680->pins_sleep)) dev_err(dev, "could not get sleep pinstate\n"); } mutex_init(&ov2680->mutex); sd = &ov2680->subdev; v4l2_i2c_subdev_init(sd, client, &ov2680_subdev_ops); ret = ov2680_initialize_controls(ov2680); if (ret) goto err_destroy_mutex; ret = __ov2680_power_on(ov2680); if (ret) goto err_free_handler; ret = ov2680_check_sensor_id(ov2680, client); if (ret < 0) { dev_info(&client->dev, "%s(%d) Check id failed\n" "check following information:\n" "Power/PowerDown/Reset/Mclk/I2cBus !!\n", __func__, __LINE__); goto err_power_off; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &ov2680_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) ov2680->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &ov2680->pad); if (ret < 0) goto err_power_off; #endif memset(facing, 0, sizeof(facing)); if (strcmp(ov2680->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", ov2680->module_index, facing, OV2680_NAME, dev_name(sd->dev)); ret = v4l2_async_register_subdev_sensor_common(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: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_power_off: __ov2680_power_off(ov2680); err_free_handler: v4l2_ctrl_handler_free(&ov2680->ctrl_handler); err_destroy_mutex: mutex_destroy(&ov2680->mutex); return ret; } static int ov2680_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov2680 *ov2680 = to_ov2680(sd); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&ov2680->ctrl_handler); mutex_destroy(&ov2680->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __ov2680_power_off(ov2680); pm_runtime_set_suspended(&client->dev); return 0; } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id ov2680_of_match[] = { { .compatible = "ovti,ov2680" }, {}, }; MODULE_DEVICE_TABLE(of, ov2680_of_match); #endif static const struct i2c_device_id ov2680_match_id[] = { { "ovti,ov2680", 0 }, { }, }; static struct i2c_driver ov2680_i2c_driver = { .driver = { .name = OV2680_NAME, .pm = &ov2680_pm_ops, .of_match_table = of_match_ptr(ov2680_of_match), }, .probe = &ov2680_probe, .remove = &ov2680_remove, .id_table = ov2680_match_id, }; static int __init sensor_mod_init(void) { return i2c_add_driver(&ov2680_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&ov2680_i2c_driver); } device_initcall_sync(sensor_mod_init); module_exit(sensor_mod_exit); MODULE_DESCRIPTION("OmniVision ov2680 sensor driver"); MODULE_LICENSE("GPL v2");