/* * A V4L2 driver for OmniVision OV5647 cameras. * * Based on Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor driver * Copyright (C) 2011 Sylwester Nawrocki * * Based on Omnivision OV7670 Camera Driver * Copyright (C) 2006-7 Jonathan Corbet * * Copyright (C) 2016, Synopsys, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation version 2. * * This program is distributed .as is. WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define SENSOR_NAME "ov5647" #define REG_NULL 0xffff #define OV5647_SW_RESET 0x0103 #define OV5647_REG_CHIPID_H 0x300A #define OV5647_REG_CHIPID_L 0x300B #define OV5647_REG_GAIN_H 0x350A #define OV5647_REG_GAIN_L 0x350B #define OV5647_REG_LINE_H 0x3500 #define OV5647_REG_LINE_M 0x3501 #define OV5647_REG_LINE_L 0x3502 #define OV5647_EXPOSURE_MIN 0x000000 #define OV5647_EXPOSURE_MAX 0x0fffff #define OV5647_EXPOSURE_STEP 0x01 #define OV5647_EXPOSURE_DEFAULT 0x001000 #define OV5647_ANALOG_GAIN_MIN 0x0000 #define OV5647_ANALOG_GAIN_MAX 0x03ff #define OV5647_ANALOG_GAIN_STEP 0x01 #define OV5647_ANALOG_GAIN_DEFAULT 0x100 #define OV5647_LINK_FREQ_150MHZ 150000000 static const s64 link_freq_menu_items[] = { OV5647_LINK_FREQ_150MHZ }; struct regval_list { u16 addr; u8 data; }; struct ov5647_state { struct v4l2_subdev sd; struct media_pad pad; struct mutex lock; struct v4l2_mbus_framefmt format; unsigned int width; unsigned int height; int power_count; struct clk *xclk; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *link_freq; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *pixel_rate; struct v4l2_ctrl *exposure; struct v4l2_ctrl *anal_gain; const struct ov5647_mode *cur_mode; }; struct ov5647_mode { u32 width; u32 height; u32 max_fps; u32 hts_def; u32 vts_def; struct regval_list *reg_list; }; static inline struct ov5647_state *to_state(struct v4l2_subdev *sd) { return container_of(sd, struct ov5647_state, sd); } static struct regval_list sensor_oe_disable_regs[] = { {0x3000, 0x00}, {0x3001, 0x00}, {0x3002, 0x00}, {REG_NULL, 0x00} }; static struct regval_list sensor_oe_enable_regs[] = { {0x3000, 0x0f}, {0x3001, 0xff}, {0x3002, 0xe4}, {REG_NULL, 0x00} }; static struct regval_list ov5647_common_regs[] = { /* upstream */ {0x0100, 0x00}, {0x0103, 0x01}, {0x370c, 0x03}, {0x5000, 0x06}, {0x5003, 0x08}, {0x5a00, 0x08}, {0x3000, 0x00}, {0x3001, 0x00}, {0x3002, 0x00}, {0x301d, 0xf0}, {0x3a18, 0x00}, {0x3a19, 0xf8}, {0x3c01, 0x80}, {0x3b07, 0x0c}, {0x3630, 0x2e}, {0x3632, 0xe2}, {0x3633, 0x23}, {0x3634, 0x44}, {0x3620, 0x64}, {0x3621, 0xe0}, {0x3600, 0x37}, {0x3704, 0xa0}, {0x3703, 0x5a}, {0x3715, 0x78}, {0x3717, 0x01}, {0x3731, 0x02}, {0x370b, 0x60}, {0x3705, 0x1a}, {0x3f05, 0x02}, {0x3f06, 0x10}, {0x3f01, 0x0a}, {0x3a0f, 0x58}, {0x3a10, 0x50}, {0x3a1b, 0x58}, {0x3a1e, 0x50}, {0x3a11, 0x60}, {0x3a1f, 0x28}, {0x4001, 0x02}, {0x4000, 0x09}, {0x3503, 0x03}, /* manual,0xAE */ {0x3500, 0x00}, {0x3501, 0x6f}, {0x3502, 0x00}, {0x350a, 0x00}, {0x350b, 0x6f}, {0x5001, 0x01}, /* manual,0xAWB */ {0x5180, 0x08}, {0x5186, 0x04}, {0x5187, 0x00}, {0x5188, 0x04}, {0x5189, 0x00}, {0x518a, 0x04}, {0x518b, 0x00}, {0x5000, 0x00}, /* lenc WBC on */ {0x3011, 0x62}, /* mipi */ {0x3016, 0x08}, {0x3017, 0xe0}, {0x3018, 0x44}, {0x3034, 0x08}, {0x3106, 0xf5}, {REG_NULL, 0x00} }; static struct regval_list ov5647_1296x972[] = { {0x0100, 0x00}, {0x3035, 0x21}, /* PLL */ {0x3036, 0x60}, /* PLL */ {0x303c, 0x11}, /* PLL */ {0x3821, 0x07}, /* ISP mirror on, Sensor mirror on, H bin on */ {0x3820, 0x41}, /* ISP flip off, Sensor flip off, V bin on */ {0x3612, 0x59}, /* analog control */ {0x3618, 0x00}, /* analog control */ {0x380c, 0x07}, /* HTS = 1896 */ {0x380d, 0x68}, /* HTS */ {0x380e, 0x05}, /* VTS = 1420 */ {0x380f, 0x8c}, /* VTS */ {0x3814, 0x31}, /* X INC */ {0x3815, 0x31}, /* X INC */ {0x3708, 0x64}, /* analog control */ {0x3709, 0x52}, /* analog control */ {0x3808, 0x05}, /* DVPHO = 1296 */ {0x3809, 0x10}, /* DVPHO */ {0x380a, 0x03}, /* DVPVO = 984 */ {0x380b, 0xcc}, /* DVPVO */ {0x3800, 0x00}, /* X Start */ {0x3801, 0x08}, /* X Start */ {0x3802, 0x00}, /* Y Start */ {0x3803, 0x02}, /* Y Start */ {0x3804, 0x0a}, /* X End */ {0x3805, 0x37}, /* X End */ {0x3806, 0x07}, /* Y End */ {0x3807, 0xa1}, /* Y End */ /* banding filter */ {0x3a08, 0x01}, /* B50 */ {0x3a09, 0x27}, /* B50 */ {0x3a0a, 0x00}, /* B60 */ {0x3a0b, 0xf6}, /* B60 */ {0x3a0d, 0x04}, /* B60 max */ {0x3a0e, 0x03}, /* B50 max */ {0x4004, 0x02}, /* black line number */ {0x4837, 0x24}, /* MIPI pclk period */ {0x0100, 0x01}, {REG_NULL, 0x00} }; static struct regval_list ov5647_2592x1944[] = { {0x0100, 0x00}, {0x3035, 0x21}, {0x3036, 0x60}, {0x303c, 0x11}, {0x3612, 0x5b}, {0x3618, 0x04}, {0x380c, 0x0a}, {0x380d, 0x8c}, {0x380e, 0x07}, {0x380f, 0xb6}, {0x3814, 0x11}, {0x3815, 0x11}, {0x3708, 0x64}, {0x3709, 0x12}, {0x3808, 0x0a}, {0x3809, 0x20}, {0x380a, 0x07}, {0x380b, 0x98}, {0x3800, 0x00}, {0x3801, 0x0c}, {0x3802, 0x00}, {0x3803, 0x04}, {0x3804, 0x0a}, {0x3805, 0x33}, {0x3806, 0x07}, {0x3807, 0xa3}, {0x3a08, 0x01}, {0x3a09, 0x28}, {0x3a0a, 0x00}, {0x3a0b, 0xf6}, {0x3a0d, 0x08}, {0x3a0e, 0x06}, {0x4004, 0x04}, {0x4837, 0x19}, {0x0100, 0x01}, {REG_NULL, 0x00} }; static const struct ov5647_mode supported_modes[] = { { .width = 1296, .height = 972, .max_fps = 25, .hts_def = 0x0768, .vts_def = 0x058c, .reg_list = ov5647_1296x972, }, { .width = 2592, .height = 1944, .max_fps = 15, .hts_def = 0x0a8c, .vts_def = 0x07b6, .reg_list = ov5647_2592x1944, }, }; static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val) { int ret; unsigned char data[3] = { reg >> 8, reg & 0xff, val }; struct i2c_client *client = v4l2_get_subdevdata(sd); ret = i2c_master_send(client, data, 3); if (ret < 0) dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", __func__, reg); return ret; } static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val) { int ret; unsigned char data_w[2] = { reg >> 8, reg & 0xff }; struct i2c_client *client = v4l2_get_subdevdata(sd); ret = i2c_master_send(client, data_w, 2); if (ret < 0) { dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", __func__, reg); return ret; } ret = i2c_master_recv(client, val, 1); if (ret < 0) dev_dbg(&client->dev, "%s: i2c read error, reg: %x\n", __func__, reg); return ret; } static int ov5647_write_array(struct v4l2_subdev *sd, struct regval_list *regs) { int i, ret; for (i = 0; regs[i].addr != REG_NULL; i++) { ret = ov5647_write(sd, regs[i].addr, regs[i].data); if (ret < 0) return ret; } return 0; } static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel) { u8 channel_id; int ret; ret = ov5647_read(sd, 0x4814, &channel_id); if (ret < 0) return ret; channel_id &= ~(3 << 6); return ov5647_write(sd, 0x4814, channel_id | (channel << 6)); } static int ov5647_stream_on(struct v4l2_subdev *sd) { int ret; ret = ov5647_write(sd, 0x4800, 0x04); if (ret < 0) return ret; ret = ov5647_write(sd, 0x4202, 0x00); if (ret < 0) return ret; return ov5647_write(sd, 0x300D, 0x00); } static int ov5647_stream_off(struct v4l2_subdev *sd) { int ret; ret = ov5647_write(sd, 0x4800, 0x25); if (ret < 0) return ret; ret = ov5647_write(sd, 0x4202, 0x0f); if (ret < 0) return ret; return ov5647_write(sd, 0x300D, 0x01); } static int set_sw_standby(struct v4l2_subdev *sd, bool standby) { int ret; u8 rdval; ret = ov5647_read(sd, 0x0100, &rdval); if (ret < 0) return ret; if (standby) rdval &= ~0x01; else rdval |= 0x01; return ov5647_write(sd, 0x0100, rdval); } static int ov5647_set_exposure(struct v4l2_subdev *sd, s32 val) { int ret; ret = ov5647_write(sd, OV5647_REG_LINE_L, val & 0x00FF); if (ret < 0) return ret; ret = ov5647_write(sd, OV5647_REG_LINE_M, (val & 0xFF00) >> 8); if (ret < 0) return ret; return ov5647_write(sd, OV5647_REG_LINE_H, val >> 16); } static int ov5647_set_analog_gain(struct v4l2_subdev *sd, s32 val) { int ret; ret = ov5647_write(sd, OV5647_REG_GAIN_L, val & 0xff); if (ret < 0) return ret; return ov5647_write(sd, OV5647_REG_GAIN_H, val >> 8); } static int __sensor_init(struct v4l2_subdev *sd) { int ret; u8 resetval, rdval; struct ov5647_state *ov5647 = to_state(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); ret = ov5647_read(sd, 0x0100, &rdval); if (ret < 0) return ret; ret = ov5647_write_array(sd, ov5647_common_regs); if (ret < 0) { dev_err(&client->dev, "write sensor common regs error\n"); return ret; } ret = ov5647_write_array(sd, ov5647->cur_mode->reg_list); if (ret < 0) { dev_err(&client->dev, "write sensor mode regs error\n"); return ret; } ret = ov5647_set_virtual_channel(sd, 0); if (ret < 0) return ret; ret = ov5647_set_exposure(sd, ov5647->exposure->val * 16); if (ret < 0) return ret; ret = ov5647_set_analog_gain(sd, ov5647->anal_gain->val); if (ret < 0) return ret; ret = ov5647_read(sd, 0x0100, &resetval); if (ret < 0) return ret; if (!(resetval & 0x01)) { dev_err(&client->dev, "Device was in SW standby"); ret = ov5647_write(sd, 0x0100, 0x01); if (ret < 0) return ret; } return ov5647_stream_off(sd); } static int ov5647_sensor_power(struct v4l2_subdev *sd, int on) { int ret = 0; struct ov5647_state *ov5647 = to_state(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); mutex_lock(&ov5647->lock); if (on && !ov5647->power_count) { dev_dbg(&client->dev, "OV5647 power on\n"); ret = clk_prepare_enable(ov5647->xclk); if (ret < 0) { dev_err(&client->dev, "clk prepare enable failed\n"); goto out; } ret = ov5647_write_array(sd, sensor_oe_enable_regs); if (ret < 0) { clk_disable_unprepare(ov5647->xclk); dev_err(&client->dev, "write sensor_oe_enable_regs error\n"); goto out; } ret = __sensor_init(sd); if (ret < 0) { clk_disable_unprepare(ov5647->xclk); dev_err(&client->dev, "Camera not available, check Power\n"); goto out; } } else if (!on && ov5647->power_count == 1) { dev_dbg(&client->dev, "OV5647 power off\n"); ret = ov5647_write_array(sd, sensor_oe_disable_regs); if (ret < 0) dev_dbg(&client->dev, "disable oe failed\n"); ret = set_sw_standby(sd, true); if (ret < 0) dev_dbg(&client->dev, "soft stby failed\n"); clk_disable_unprepare(ov5647->xclk); } /* Update the power count. */ ov5647->power_count += on ? 1 : -1; WARN_ON(ov5647->power_count < 0); out: mutex_unlock(&ov5647->lock); return ret; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int ov5647_sensor_get_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { u8 val; int ret; ret = ov5647_read(sd, reg->reg & 0xff, &val); if (ret < 0) return ret; reg->val = val; reg->size = 1; return 0; } static int ov5647_sensor_set_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) { return ov5647_write(sd, reg->reg & 0xff, reg->val & 0xff); } #endif /** * @short Subdev core operations registration */ static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = { .s_power = ov5647_sensor_power, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = ov5647_sensor_get_register, .s_register = ov5647_sensor_set_register, #endif }; static int ov5647_s_stream(struct v4l2_subdev *sd, int enable) { if (enable) return ov5647_stream_on(sd); else return ov5647_stream_off(sd); } static const struct v4l2_subdev_video_ops ov5647_subdev_video_ops = { .s_stream = ov5647_s_stream, }; static int ov5647_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_SBGGR8_1X8; return 0; } static int ov5647_get_reso_dist(const struct ov5647_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct ov5647_mode *ov5647_find_best_fit(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; int i; for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { dist = ov5647_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 ov5647_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct ov5647_state *ov5647 = to_state(sd); const struct ov5647_mode *mode; s64 h_blank, v_blank, pixel_rate; mutex_lock(&ov5647->lock); mode = ov5647_find_best_fit(fmt); fmt->format.code = MEDIA_BUS_FMT_SBGGR8_1X8; fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; } else { ov5647->cur_mode = mode; h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(ov5647->hblank, h_blank, h_blank, 1, h_blank); v_blank = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(ov5647->vblank, v_blank, v_blank, 1, v_blank); pixel_rate = mode->vts_def * mode->hts_def * mode->max_fps; __v4l2_ctrl_modify_range(ov5647->pixel_rate, pixel_rate, pixel_rate, 1, pixel_rate); } mutex_unlock(&ov5647->lock); return 0; } static int ov5647_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct ov5647_state *ov5647 = to_state(sd); const struct ov5647_mode *mode = ov5647->cur_mode; mutex_lock(&ov5647->lock); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = MEDIA_BUS_FMT_SBGGR8_1X8; fmt->format.field = V4L2_FIELD_NONE; } mutex_unlock(&ov5647->lock); return 0; } static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = { .enum_mbus_code = ov5647_enum_mbus_code, .get_fmt = ov5647_get_fmt, .set_fmt = ov5647_set_fmt, }; static const struct v4l2_subdev_ops ov5647_subdev_ops = { .core = &ov5647_subdev_core_ops, .video = &ov5647_subdev_video_ops, .pad = &ov5647_subdev_pad_ops, }; static int ov5647_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov5647_state *ov5647 = container_of(ctrl->handler, struct ov5647_state, ctrl_handler); switch (ctrl->id) { case V4L2_CID_EXPOSURE: ov5647_set_exposure(&ov5647->sd, ctrl->val * 16); break; case V4L2_CID_ANALOGUE_GAIN: ov5647_set_analog_gain(&ov5647->sd, ctrl->val); break; default: break; } return 0; } static const struct v4l2_ctrl_ops ov5647_ctrl_ops = { .s_ctrl = ov5647_set_ctrl, }; static int ov5647_initialize_controls(struct v4l2_subdev *sd) { struct v4l2_ctrl_handler *handler; struct ov5647_state *ov5647 = to_state(sd); const struct ov5647_mode *mode = ov5647->cur_mode; s64 pixel_rate, h_blank, v_blank; int ret; handler = &ov5647->ctrl_handler; ret = v4l2_ctrl_handler_init(handler, 1); if (ret) return ret; /* freq */ ov5647->link_freq = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 0, 0, link_freq_menu_items); if (ov5647->link_freq) ov5647->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; pixel_rate = mode->vts_def * mode->hts_def * mode->max_fps; ov5647->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, pixel_rate, 1, pixel_rate); /* blank */ h_blank = mode->hts_def - mode->width; ov5647->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); v_blank = mode->vts_def - mode->height; ov5647->vblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_VBLANK, v_blank, v_blank, 1, v_blank); /* exposure */ ov5647->exposure = v4l2_ctrl_new_std(handler, &ov5647_ctrl_ops, V4L2_CID_EXPOSURE, OV5647_EXPOSURE_MIN, OV5647_EXPOSURE_MAX, OV5647_EXPOSURE_STEP, OV5647_EXPOSURE_DEFAULT); ov5647->anal_gain = v4l2_ctrl_new_std(handler, &ov5647_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, OV5647_ANALOG_GAIN_MIN, OV5647_ANALOG_GAIN_MAX, OV5647_ANALOG_GAIN_STEP, OV5647_ANALOG_GAIN_DEFAULT); if (handler->error) { v4l2_ctrl_handler_free(handler); return handler->error; } sd->ctrl_handler = handler; return 0; } static int ov5647_detect(struct v4l2_subdev *sd) { u8 read; int ret; struct i2c_client *client = v4l2_get_subdevdata(sd); ret = ov5647_write(sd, OV5647_SW_RESET, 0x01); if (ret < 0) return ret; ret = ov5647_read(sd, OV5647_REG_CHIPID_H, &read); if (ret < 0) return ret; if (read != 0x56) { dev_err(&client->dev, "ID High expected 0x56 got %x", read); return -ENODEV; } ret = ov5647_read(sd, OV5647_REG_CHIPID_L, &read); if (ret < 0) return ret; if (read != 0x47) { dev_err(&client->dev, "ID Low expected 0x47 got %x", read); return -ENODEV; } return ov5647_write(sd, OV5647_SW_RESET, 0x00); } static int ov5647_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov5647_state *ov5647 = to_state(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); mutex_lock(&ov5647->lock); /* Initialize try_fmt */ try_fmt->width = ov5647->cur_mode->width; try_fmt->height = ov5647->cur_mode->height; try_fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&ov5647->lock); /* No crop or compose */ return 0; } static const struct v4l2_subdev_internal_ops ov5647_subdev_internal_ops = { .open = ov5647_open, }; static int ov5647_parse_dt(struct device_node *np) { struct v4l2_fwnode_endpoint bus_cfg; struct device_node *ep; int ret; ep = of_graph_get_next_endpoint(np, NULL); if (!ep) return -EINVAL; ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg); of_node_put(ep); return ret; } static int ov5647_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct ov5647_state *sensor; int ret; struct v4l2_subdev *sd; struct device_node *np = client->dev.of_node; u32 xclk_freq; sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); if (!sensor) return -ENOMEM; if (IS_ENABLED(CONFIG_OF) && np) { ret = ov5647_parse_dt(np); if (ret) { dev_err(dev, "DT parsing error: %d\n", ret); return ret; } } /* get system clock (xclk) */ sensor->xclk = devm_clk_get(dev, NULL); if (IS_ERR(sensor->xclk)) { dev_err(dev, "could not get xclk"); return PTR_ERR(sensor->xclk); } xclk_freq = clk_get_rate(sensor->xclk); if (xclk_freq != 25000000) { dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq); return -EINVAL; } mutex_init(&sensor->lock); sensor->cur_mode = &supported_modes[0]; sd = &sensor->sd; v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops); ret = ov5647_initialize_controls(sd); if (ret) return ret; sensor->sd.internal_ops = &ov5647_subdev_internal_ops; sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &sensor->pad, 0); if (ret < 0) goto mutex_remove; ret = ov5647_detect(sd); if (ret < 0) goto error; ret = v4l2_async_register_subdev(sd); if (ret < 0) goto error; dev_dbg(dev, "OmniVision OV5647 camera driver probed\n"); return 0; error: media_entity_cleanup(&sd->entity); mutex_remove: mutex_destroy(&sensor->lock); return ret; } static int ov5647_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov5647_state *ov5647 = to_state(sd); v4l2_async_unregister_subdev(&ov5647->sd); media_entity_cleanup(&ov5647->sd.entity); v4l2_device_unregister_subdev(sd); mutex_destroy(&ov5647->lock); return 0; } static const struct i2c_device_id ov5647_id[] = { {"ov5647", 0}, {} }; MODULE_DEVICE_TABLE(i2c, ov5647_id); #if IS_ENABLED(CONFIG_OF) static const struct of_device_id ov5647_of_match[] = { {.compatible = "ovti,ov5647"}, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, ov5647_of_match); #endif static struct i2c_driver ov5647_driver = { .driver = { .of_match_table = of_match_ptr(ov5647_of_match), .name = SENSOR_NAME, }, .probe = ov5647_probe, .remove = ov5647_remove, .id_table = ov5647_id, }; module_i2c_driver(ov5647_driver); MODULE_AUTHOR("Ramiro Oliveira "); MODULE_DESCRIPTION("A low-level driver for OmniVision ov5647 sensors"); MODULE_LICENSE("GPL v2");