1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
9 #include <linux/device.h>
10 #include <linux/delay.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/i2c.h>
13 #include <linux/module.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/regulator/consumer.h>
16 #include <linux/sysfs.h>
17 #include <media/media-entity.h>
18 #include <media/v4l2-async.h>
19 #include <media/v4l2-ctrls.h>
20 #include <media/v4l2-subdev.h>
22 #ifndef V4L2_CID_DIGITAL_GAIN
23 #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
26 /* 45Mhz * 4 Binning */
27 #define OV5695_PIXEL_RATE (45 * 1000 * 1000 * 4)
28 #define OV5695_XVCLK_FREQ 24000000
30 #define CHIP_ID 0x005695
31 #define OV5695_REG_CHIP_ID 0x300a
33 #define OV5695_REG_CTRL_MODE 0x0100
34 #define OV5695_MODE_SW_STANDBY 0x0
35 #define OV5695_MODE_STREAMING BIT(0)
37 #define OV5695_REG_EXPOSURE 0x3500
38 #define OV5695_EXPOSURE_MIN 4
39 #define OV5695_EXPOSURE_STEP 1
40 #define OV5695_VTS_MAX 0x7fff
42 #define OV5695_REG_ANALOG_GAIN 0x3509
43 #define ANALOG_GAIN_MIN 0x10
44 #define ANALOG_GAIN_MAX 0xf8
45 #define ANALOG_GAIN_STEP 1
46 #define ANALOG_GAIN_DEFAULT 0xf8
48 #define OV5695_REG_DIGI_GAIN_H 0x350a
49 #define OV5695_REG_DIGI_GAIN_L 0x350b
50 #define OV5695_DIGI_GAIN_L_MASK 0x3f
51 #define OV5695_DIGI_GAIN_H_SHIFT 6
52 #define OV5695_DIGI_GAIN_MIN 0
53 #define OV5695_DIGI_GAIN_MAX (0x4000 - 1)
54 #define OV5695_DIGI_GAIN_STEP 1
55 #define OV5695_DIGI_GAIN_DEFAULT 1024
57 #define OV5695_REG_TEST_PATTERN 0x4503
58 #define OV5695_TEST_PATTERN_ENABLE 0x80
59 #define OV5695_TEST_PATTERN_DISABLE 0x0
61 #define OV5695_REG_VTS 0x380e
63 #define REG_NULL 0xFFFF
65 #define OV5695_REG_VALUE_08BIT 1
66 #define OV5695_REG_VALUE_16BIT 2
67 #define OV5695_REG_VALUE_24BIT 3
69 #define OV5695_LANES 2
70 #define OV5695_BITS_PER_SAMPLE 10
72 static const char * const ov5695_supply_names[] = {
73 "avdd", /* Analog power */
74 "dovdd", /* Digital I/O power */
75 "dvdd", /* Digital core power */
78 #define OV5695_NUM_SUPPLIES ARRAY_SIZE(ov5695_supply_names)
92 const struct regval *reg_list;
96 struct i2c_client *client;
98 struct gpio_desc *reset_gpio;
99 struct regulator_bulk_data supplies[OV5695_NUM_SUPPLIES];
101 struct v4l2_subdev subdev;
102 struct media_pad pad;
103 struct v4l2_ctrl_handler ctrl_handler;
104 struct v4l2_ctrl *exposure;
105 struct v4l2_ctrl *anal_gain;
106 struct v4l2_ctrl *digi_gain;
107 struct v4l2_ctrl *hblank;
108 struct v4l2_ctrl *vblank;
109 struct v4l2_ctrl *test_pattern;
112 const struct ov5695_mode *cur_mode;
115 #define to_ov5695(sd) container_of(sd, struct ov5695, subdev)
120 * linelength 672(0x2a0)
121 * framelength 2232(0x8b8)
122 * grabwindow_width 1296
123 * grabwindow_height 972
124 * max_framerate 30fps
125 * mipi_datarate per lane 840Mbps
127 static const struct regval ov5695_global_regs[] = {
295 * linelength 740(0x2e4)
296 * framelength 2024(0x7e8)
297 * grabwindow_width 2592
298 * grabwindow_height 1944
299 * max_framerate 30fps
300 * mipi_datarate per lane 840Mbps
302 static const struct regval ov5695_2592x1944_regs[] = {
337 * linelength 672(0x2a0)
338 * framelength 2232(0x8b8)
339 * grabwindow_width 1920
340 * grabwindow_height 1080
341 * max_framerate 30fps
342 * mipi_datarate per lane 840Mbps
344 static const struct regval ov5695_1920x1080_regs[] = {
379 * linelength 740(0x02e4)
380 * framelength 1012(0x03f4)
381 * grabwindow_width 1296
382 * grabwindow_height 972
383 * max_framerate 60fps
384 * mipi_datarate per lane 840Mbps
386 static const struct regval ov5695_1296x972_regs[] = {
562 * linelength 672(0x2a0)
563 * framelength 2232(0x8b8)
564 * grabwindow_width 1280
565 * grabwindow_height 720
566 * max_framerate 30fps
567 * mipi_datarate per lane 840Mbps
569 static const struct regval ov5695_1280x720_regs[] = {
604 * linelength 672(0x2a0)
605 * framelength 558(0x22e)
606 * grabwindow_width 640
607 * grabwindow_height 480
608 * max_framerate 120fps
609 * mipi_datarate per lane 840Mbps
611 static const struct regval ov5695_640x480_regs[] = {
643 static const struct ov5695_mode supported_modes[] = {
649 .hts_def = 0x02e4 * 4,
651 .reg_list = ov5695_2592x1944_regs,
658 .hts_def = 0x02a0 * 4,
660 .reg_list = ov5695_1920x1080_regs,
667 .hts_def = 0x02e4 * 4,
669 .reg_list = ov5695_1296x972_regs,
676 .hts_def = 0x02a0 * 4,
678 .reg_list = ov5695_1280x720_regs,
685 .hts_def = 0x02a0 * 4,
687 .reg_list = ov5695_640x480_regs,
691 #define OV5695_LINK_FREQ_420MHZ 420000000
692 static const s64 link_freq_menu_items[] = {
693 OV5695_LINK_FREQ_420MHZ
696 static const char * const ov5695_test_pattern_menu[] = {
698 "Vertical Color Bar Type 1",
699 "Vertical Color Bar Type 2",
700 "Vertical Color Bar Type 3",
701 "Vertical Color Bar Type 4"
704 /* Write registers up to 4 at a time */
705 static int ov5695_write_reg(struct i2c_client *client, u16 reg,
719 val_be = cpu_to_be32(val);
720 val_p = (u8 *)&val_be;
725 buf[buf_i++] = val_p[val_i++];
727 if (i2c_master_send(client, buf, len + 2) != len + 2)
733 static int ov5695_write_array(struct i2c_client *client,
734 const struct regval *regs)
739 for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
740 ret = ov5695_write_reg(client, regs[i].addr,
741 OV5695_REG_VALUE_08BIT, regs[i].val);
746 /* Read registers up to 4 at a time */
747 static int ov5695_read_reg(struct i2c_client *client, u16 reg, unsigned int len,
750 struct i2c_msg msgs[2];
753 __be16 reg_addr_be = cpu_to_be16(reg);
759 data_be_p = (u8 *)&data_be;
760 /* Write register address */
761 msgs[0].addr = client->addr;
764 msgs[0].buf = (u8 *)®_addr_be;
766 /* Read data from register */
767 msgs[1].addr = client->addr;
768 msgs[1].flags = I2C_M_RD;
770 msgs[1].buf = &data_be_p[4 - len];
772 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
773 if (ret != ARRAY_SIZE(msgs))
776 *val = be32_to_cpu(data_be);
781 static int ov5695_get_reso_dist(const struct ov5695_mode *mode,
782 struct v4l2_mbus_framefmt *framefmt)
784 return abs(mode->width - framefmt->width) +
785 abs(mode->height - framefmt->height);
788 static const struct ov5695_mode *
789 ov5695_find_best_fit(struct v4l2_subdev_format *fmt)
791 struct v4l2_mbus_framefmt *framefmt = &fmt->format;
793 int cur_best_fit = 0;
794 int cur_best_fit_dist = -1;
797 for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
798 dist = ov5695_get_reso_dist(&supported_modes[i], framefmt);
799 if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
800 cur_best_fit_dist = dist;
805 return &supported_modes[cur_best_fit];
808 static int ov5695_set_fmt(struct v4l2_subdev *sd,
809 struct v4l2_subdev_pad_config *cfg,
810 struct v4l2_subdev_format *fmt)
812 struct ov5695 *ov5695 = to_ov5695(sd);
813 const struct ov5695_mode *mode;
814 s64 h_blank, vblank_def;
816 mutex_lock(&ov5695->mutex);
818 mode = ov5695_find_best_fit(fmt);
819 fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
820 fmt->format.width = mode->width;
821 fmt->format.height = mode->height;
822 fmt->format.field = V4L2_FIELD_NONE;
823 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
824 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
825 *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
828 ov5695->cur_mode = mode;
829 h_blank = mode->hts_def - mode->width;
830 __v4l2_ctrl_modify_range(ov5695->hblank, h_blank,
831 h_blank, 1, h_blank);
832 vblank_def = mode->vts_def - mode->height;
833 __v4l2_ctrl_modify_range(ov5695->vblank, vblank_def,
834 OV5695_VTS_MAX - mode->height,
838 mutex_unlock(&ov5695->mutex);
843 static int ov5695_get_fmt(struct v4l2_subdev *sd,
844 struct v4l2_subdev_pad_config *cfg,
845 struct v4l2_subdev_format *fmt)
847 struct ov5695 *ov5695 = to_ov5695(sd);
848 const struct ov5695_mode *mode = ov5695->cur_mode;
850 mutex_lock(&ov5695->mutex);
851 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
852 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
853 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
855 mutex_unlock(&ov5695->mutex);
859 fmt->format.width = mode->width;
860 fmt->format.height = mode->height;
861 fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
862 fmt->format.field = V4L2_FIELD_NONE;
864 mutex_unlock(&ov5695->mutex);
869 static int ov5695_enum_mbus_code(struct v4l2_subdev *sd,
870 struct v4l2_subdev_pad_config *cfg,
871 struct v4l2_subdev_mbus_code_enum *code)
873 if (code->index != 0)
875 code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
880 static int ov5695_enum_frame_sizes(struct v4l2_subdev *sd,
881 struct v4l2_subdev_pad_config *cfg,
882 struct v4l2_subdev_frame_size_enum *fse)
884 if (fse->index >= ARRAY_SIZE(supported_modes))
887 if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
890 fse->min_width = supported_modes[fse->index].width;
891 fse->max_width = supported_modes[fse->index].width;
892 fse->max_height = supported_modes[fse->index].height;
893 fse->min_height = supported_modes[fse->index].height;
898 static int ov5695_enable_test_pattern(struct ov5695 *ov5695, u32 pattern)
903 val = (pattern - 1) | OV5695_TEST_PATTERN_ENABLE;
905 val = OV5695_TEST_PATTERN_DISABLE;
907 return ov5695_write_reg(ov5695->client, OV5695_REG_TEST_PATTERN,
908 OV5695_REG_VALUE_08BIT, val);
911 static int __ov5695_start_stream(struct ov5695 *ov5695)
915 ret = ov5695_write_array(ov5695->client, ov5695_global_regs);
918 ret = ov5695_write_array(ov5695->client, ov5695->cur_mode->reg_list);
922 /* In case these controls are set before streaming */
923 ret = __v4l2_ctrl_handler_setup(&ov5695->ctrl_handler);
927 return ov5695_write_reg(ov5695->client, OV5695_REG_CTRL_MODE,
928 OV5695_REG_VALUE_08BIT, OV5695_MODE_STREAMING);
931 static int __ov5695_stop_stream(struct ov5695 *ov5695)
933 return ov5695_write_reg(ov5695->client, OV5695_REG_CTRL_MODE,
934 OV5695_REG_VALUE_08BIT, OV5695_MODE_SW_STANDBY);
937 static int ov5695_s_stream(struct v4l2_subdev *sd, int on)
939 struct ov5695 *ov5695 = to_ov5695(sd);
940 struct i2c_client *client = ov5695->client;
943 mutex_lock(&ov5695->mutex);
945 if (on == ov5695->streaming)
946 goto unlock_and_return;
949 ret = pm_runtime_get_sync(&client->dev);
951 pm_runtime_put_noidle(&client->dev);
952 goto unlock_and_return;
955 ret = __ov5695_start_stream(ov5695);
957 v4l2_err(sd, "start stream failed while write regs\n");
958 pm_runtime_put(&client->dev);
959 goto unlock_and_return;
962 __ov5695_stop_stream(ov5695);
963 pm_runtime_put(&client->dev);
966 ov5695->streaming = on;
969 mutex_unlock(&ov5695->mutex);
974 static int __ov5695_power_on(struct ov5695 *ov5695)
977 struct device *dev = &ov5695->client->dev;
979 ret = clk_prepare_enable(ov5695->xvclk);
981 dev_err(dev, "Failed to enable xvclk\n");
985 gpiod_set_value_cansleep(ov5695->reset_gpio, 1);
988 * The hardware requires the regulators to be powered on in order,
989 * so enable them one by one.
991 for (i = 0; i < OV5695_NUM_SUPPLIES; i++) {
992 ret = regulator_enable(ov5695->supplies[i].consumer);
994 dev_err(dev, "Failed to enable %s: %d\n",
995 ov5695->supplies[i].supply, ret);
996 goto disable_reg_clk;
1000 gpiod_set_value_cansleep(ov5695->reset_gpio, 0);
1002 usleep_range(1000, 1200);
1007 for (--i; i >= 0; i--)
1008 regulator_disable(ov5695->supplies[i].consumer);
1009 clk_disable_unprepare(ov5695->xvclk);
1014 static void __ov5695_power_off(struct ov5695 *ov5695)
1016 struct device *dev = &ov5695->client->dev;
1019 clk_disable_unprepare(ov5695->xvclk);
1020 gpiod_set_value_cansleep(ov5695->reset_gpio, 1);
1023 * The hardware requires the regulators to be powered off in order,
1024 * so disable them one by one.
1026 for (i = OV5695_NUM_SUPPLIES - 1; i >= 0; i--) {
1027 ret = regulator_disable(ov5695->supplies[i].consumer);
1029 dev_err(dev, "Failed to disable %s: %d\n",
1030 ov5695->supplies[i].supply, ret);
1034 static int __maybe_unused ov5695_runtime_resume(struct device *dev)
1036 struct i2c_client *client = to_i2c_client(dev);
1037 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1038 struct ov5695 *ov5695 = to_ov5695(sd);
1040 return __ov5695_power_on(ov5695);
1043 static int __maybe_unused ov5695_runtime_suspend(struct device *dev)
1045 struct i2c_client *client = to_i2c_client(dev);
1046 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1047 struct ov5695 *ov5695 = to_ov5695(sd);
1049 __ov5695_power_off(ov5695);
1054 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1055 static int ov5695_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1057 struct ov5695 *ov5695 = to_ov5695(sd);
1058 struct v4l2_mbus_framefmt *try_fmt =
1059 v4l2_subdev_get_try_format(sd, fh->pad, 0);
1060 const struct ov5695_mode *def_mode = &supported_modes[0];
1062 mutex_lock(&ov5695->mutex);
1063 /* Initialize try_fmt */
1064 try_fmt->width = def_mode->width;
1065 try_fmt->height = def_mode->height;
1066 try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1067 try_fmt->field = V4L2_FIELD_NONE;
1069 mutex_unlock(&ov5695->mutex);
1070 /* No crop or compose */
1076 static const struct dev_pm_ops ov5695_pm_ops = {
1077 SET_RUNTIME_PM_OPS(ov5695_runtime_suspend,
1078 ov5695_runtime_resume, NULL)
1081 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1082 static const struct v4l2_subdev_internal_ops ov5695_internal_ops = {
1083 .open = ov5695_open,
1087 static const struct v4l2_subdev_video_ops ov5695_video_ops = {
1088 .s_stream = ov5695_s_stream,
1091 static const struct v4l2_subdev_pad_ops ov5695_pad_ops = {
1092 .enum_mbus_code = ov5695_enum_mbus_code,
1093 .enum_frame_size = ov5695_enum_frame_sizes,
1094 .get_fmt = ov5695_get_fmt,
1095 .set_fmt = ov5695_set_fmt,
1098 static const struct v4l2_subdev_ops ov5695_subdev_ops = {
1099 .video = &ov5695_video_ops,
1100 .pad = &ov5695_pad_ops,
1103 static int ov5695_set_ctrl(struct v4l2_ctrl *ctrl)
1105 struct ov5695 *ov5695 = container_of(ctrl->handler,
1106 struct ov5695, ctrl_handler);
1107 struct i2c_client *client = ov5695->client;
1111 /* Propagate change of current control to all related controls */
1113 case V4L2_CID_VBLANK:
1114 /* Update max exposure while meeting expected vblanking */
1115 max = ov5695->cur_mode->height + ctrl->val - 4;
1116 __v4l2_ctrl_modify_range(ov5695->exposure,
1117 ov5695->exposure->minimum, max,
1118 ov5695->exposure->step,
1119 ov5695->exposure->default_value);
1123 if (!pm_runtime_get_if_in_use(&client->dev))
1127 case V4L2_CID_EXPOSURE:
1128 /* 4 least significant bits of expsoure are fractional part */
1129 ret = ov5695_write_reg(ov5695->client, OV5695_REG_EXPOSURE,
1130 OV5695_REG_VALUE_24BIT, ctrl->val << 4);
1132 case V4L2_CID_ANALOGUE_GAIN:
1133 ret = ov5695_write_reg(ov5695->client, OV5695_REG_ANALOG_GAIN,
1134 OV5695_REG_VALUE_08BIT, ctrl->val);
1136 case V4L2_CID_DIGITAL_GAIN:
1137 ret = ov5695_write_reg(ov5695->client, OV5695_REG_DIGI_GAIN_L,
1138 OV5695_REG_VALUE_08BIT,
1139 ctrl->val & OV5695_DIGI_GAIN_L_MASK);
1140 ret = ov5695_write_reg(ov5695->client, OV5695_REG_DIGI_GAIN_H,
1141 OV5695_REG_VALUE_08BIT,
1142 ctrl->val >> OV5695_DIGI_GAIN_H_SHIFT);
1144 case V4L2_CID_VBLANK:
1145 ret = ov5695_write_reg(ov5695->client, OV5695_REG_VTS,
1146 OV5695_REG_VALUE_16BIT,
1147 ctrl->val + ov5695->cur_mode->height);
1149 case V4L2_CID_TEST_PATTERN:
1150 ret = ov5695_enable_test_pattern(ov5695, ctrl->val);
1153 dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
1154 __func__, ctrl->id, ctrl->val);
1158 pm_runtime_put(&client->dev);
1163 static const struct v4l2_ctrl_ops ov5695_ctrl_ops = {
1164 .s_ctrl = ov5695_set_ctrl,
1167 static int ov5695_initialize_controls(struct ov5695 *ov5695)
1169 const struct ov5695_mode *mode;
1170 struct v4l2_ctrl_handler *handler;
1171 struct v4l2_ctrl *ctrl;
1172 s64 exposure_max, vblank_def;
1176 handler = &ov5695->ctrl_handler;
1177 mode = ov5695->cur_mode;
1178 ret = v4l2_ctrl_handler_init(handler, 8);
1181 handler->lock = &ov5695->mutex;
1183 ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
1184 0, 0, link_freq_menu_items);
1186 ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1188 v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
1189 0, OV5695_PIXEL_RATE, 1, OV5695_PIXEL_RATE);
1191 h_blank = mode->hts_def - mode->width;
1192 ov5695->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
1193 h_blank, h_blank, 1, h_blank);
1195 ov5695->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1197 vblank_def = mode->vts_def - mode->height;
1198 ov5695->vblank = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops,
1199 V4L2_CID_VBLANK, vblank_def,
1200 OV5695_VTS_MAX - mode->height,
1203 exposure_max = mode->vts_def - 4;
1204 ov5695->exposure = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops,
1205 V4L2_CID_EXPOSURE, OV5695_EXPOSURE_MIN,
1206 exposure_max, OV5695_EXPOSURE_STEP,
1209 ov5695->anal_gain = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops,
1210 V4L2_CID_ANALOGUE_GAIN, ANALOG_GAIN_MIN,
1211 ANALOG_GAIN_MAX, ANALOG_GAIN_STEP,
1212 ANALOG_GAIN_DEFAULT);
1215 ov5695->digi_gain = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops,
1216 V4L2_CID_DIGITAL_GAIN, OV5695_DIGI_GAIN_MIN,
1217 OV5695_DIGI_GAIN_MAX, OV5695_DIGI_GAIN_STEP,
1218 OV5695_DIGI_GAIN_DEFAULT);
1220 ov5695->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
1221 &ov5695_ctrl_ops, V4L2_CID_TEST_PATTERN,
1222 ARRAY_SIZE(ov5695_test_pattern_menu) - 1,
1223 0, 0, ov5695_test_pattern_menu);
1225 if (handler->error) {
1226 ret = handler->error;
1227 dev_err(&ov5695->client->dev,
1228 "Failed to init controls(%d)\n", ret);
1229 goto err_free_handler;
1232 ov5695->subdev.ctrl_handler = handler;
1237 v4l2_ctrl_handler_free(handler);
1242 static int ov5695_check_sensor_id(struct ov5695 *ov5695,
1243 struct i2c_client *client)
1245 struct device *dev = &ov5695->client->dev;
1249 ret = ov5695_read_reg(client, OV5695_REG_CHIP_ID,
1250 OV5695_REG_VALUE_24BIT, &id);
1251 if (id != CHIP_ID) {
1252 dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret);
1256 dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID);
1261 static int ov5695_configure_regulators(struct ov5695 *ov5695)
1265 for (i = 0; i < OV5695_NUM_SUPPLIES; i++)
1266 ov5695->supplies[i].supply = ov5695_supply_names[i];
1268 return devm_regulator_bulk_get(&ov5695->client->dev,
1269 OV5695_NUM_SUPPLIES,
1273 static int ov5695_probe(struct i2c_client *client,
1274 const struct i2c_device_id *id)
1276 struct device *dev = &client->dev;
1277 struct ov5695 *ov5695;
1278 struct v4l2_subdev *sd;
1281 ov5695 = devm_kzalloc(dev, sizeof(*ov5695), GFP_KERNEL);
1285 ov5695->client = client;
1286 ov5695->cur_mode = &supported_modes[0];
1288 ov5695->xvclk = devm_clk_get(dev, "xvclk");
1289 if (IS_ERR(ov5695->xvclk)) {
1290 dev_err(dev, "Failed to get xvclk\n");
1293 ret = clk_set_rate(ov5695->xvclk, OV5695_XVCLK_FREQ);
1295 dev_err(dev, "Failed to set xvclk rate (24MHz)\n");
1298 if (clk_get_rate(ov5695->xvclk) != OV5695_XVCLK_FREQ)
1299 dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
1301 ov5695->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
1302 if (IS_ERR(ov5695->reset_gpio)) {
1303 dev_err(dev, "Failed to get reset-gpios\n");
1307 ret = ov5695_configure_regulators(ov5695);
1309 dev_err(dev, "Failed to get power regulators\n");
1313 mutex_init(&ov5695->mutex);
1315 sd = &ov5695->subdev;
1316 v4l2_i2c_subdev_init(sd, client, &ov5695_subdev_ops);
1317 ret = ov5695_initialize_controls(ov5695);
1319 goto err_destroy_mutex;
1321 ret = __ov5695_power_on(ov5695);
1323 goto err_free_handler;
1325 ret = ov5695_check_sensor_id(ov5695, client);
1329 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1330 sd->internal_ops = &ov5695_internal_ops;
1331 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1333 #if defined(CONFIG_MEDIA_CONTROLLER)
1334 ov5695->pad.flags = MEDIA_PAD_FL_SOURCE;
1335 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
1336 ret = media_entity_pads_init(&sd->entity, 1, &ov5695->pad);
1341 ret = v4l2_async_register_subdev_sensor_common(sd);
1343 dev_err(dev, "v4l2 async register subdev failed\n");
1344 goto err_clean_entity;
1347 pm_runtime_set_active(dev);
1348 pm_runtime_enable(dev);
1349 pm_runtime_idle(dev);
1354 #if defined(CONFIG_MEDIA_CONTROLLER)
1355 media_entity_cleanup(&sd->entity);
1358 __ov5695_power_off(ov5695);
1360 v4l2_ctrl_handler_free(&ov5695->ctrl_handler);
1362 mutex_destroy(&ov5695->mutex);
1367 static int ov5695_remove(struct i2c_client *client)
1369 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1370 struct ov5695 *ov5695 = to_ov5695(sd);
1372 v4l2_async_unregister_subdev(sd);
1373 #if defined(CONFIG_MEDIA_CONTROLLER)
1374 media_entity_cleanup(&sd->entity);
1376 v4l2_ctrl_handler_free(&ov5695->ctrl_handler);
1377 mutex_destroy(&ov5695->mutex);
1379 pm_runtime_disable(&client->dev);
1380 if (!pm_runtime_status_suspended(&client->dev))
1381 __ov5695_power_off(ov5695);
1382 pm_runtime_set_suspended(&client->dev);
1387 #if IS_ENABLED(CONFIG_OF)
1388 static const struct of_device_id ov5695_of_match[] = {
1389 { .compatible = "ovti,ov5695" },
1392 MODULE_DEVICE_TABLE(of, ov5695_of_match);
1395 static struct i2c_driver ov5695_i2c_driver = {
1398 .pm = &ov5695_pm_ops,
1399 .of_match_table = of_match_ptr(ov5695_of_match),
1401 .probe = &ov5695_probe,
1402 .remove = &ov5695_remove,
1405 module_i2c_driver(ov5695_i2c_driver);
1407 MODULE_DESCRIPTION("OmniVision ov5695 sensor driver");
1408 MODULE_LICENSE("GPL v2");