1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2019 Intel Corporation.
4 #include <asm/unaligned.h>
5 #include <linux/acpi.h>
6 #include <linux/delay.h>
8 #include <linux/module.h>
9 #include <linux/pm_runtime.h>
10 #include <media/v4l2-ctrls.h>
11 #include <media/v4l2-device.h>
12 #include <media/v4l2-fwnode.h>
14 #define OV5675_REG_VALUE_08BIT 1
15 #define OV5675_REG_VALUE_16BIT 2
16 #define OV5675_REG_VALUE_24BIT 3
18 #define OV5675_LINK_FREQ_450MHZ 450000000ULL
19 #define OV5675_SCLK 90000000LL
20 #define OV5675_MCLK 19200000
21 #define OV5675_DATA_LANES 2
22 #define OV5675_RGB_DEPTH 10
24 #define OV5675_REG_CHIP_ID 0x300a
25 #define OV5675_CHIP_ID 0x5675
27 #define OV5675_REG_MODE_SELECT 0x0100
28 #define OV5675_MODE_STANDBY 0x00
29 #define OV5675_MODE_STREAMING 0x01
31 /* vertical-timings from sensor */
32 #define OV5675_REG_VTS 0x380e
33 #define OV5675_VTS_30FPS 0x07e4
34 #define OV5675_VTS_30FPS_MIN 0x07e4
35 #define OV5675_VTS_MAX 0x7fff
37 /* horizontal-timings from sensor */
38 #define OV5675_REG_HTS 0x380c
40 /* Exposure controls from sensor */
41 #define OV5675_REG_EXPOSURE 0x3500
42 #define OV5675_EXPOSURE_MIN 4
43 #define OV5675_EXPOSURE_MAX_MARGIN 4
44 #define OV5675_EXPOSURE_STEP 1
46 /* Analog gain controls from sensor */
47 #define OV5675_REG_ANALOG_GAIN 0x3508
48 #define OV5675_ANAL_GAIN_MIN 128
49 #define OV5675_ANAL_GAIN_MAX 2047
50 #define OV5675_ANAL_GAIN_STEP 1
52 /* Digital gain controls from sensor */
53 #define OV5675_REG_MWB_R_GAIN 0x5019
54 #define OV5675_REG_MWB_G_GAIN 0x501b
55 #define OV5675_REG_MWB_B_GAIN 0x501d
56 #define OV5675_DGTL_GAIN_MIN 0
57 #define OV5675_DGTL_GAIN_MAX 4095
58 #define OV5675_DGTL_GAIN_STEP 1
59 #define OV5675_DGTL_GAIN_DEFAULT 1024
61 /* Test Pattern Control */
62 #define OV5675_REG_TEST_PATTERN 0x4503
63 #define OV5675_TEST_PATTERN_ENABLE BIT(7)
64 #define OV5675_TEST_PATTERN_BAR_SHIFT 2
66 /* Flip Mirror Controls from sensor */
67 #define OV5675_REG_FORMAT1 0x3820
68 #define OV5675_REG_FORMAT2 0x373d
70 #define to_ov5675(_sd) container_of(_sd, struct ov5675, sd)
73 OV5675_LINK_FREQ_900MBPS,
81 struct ov5675_reg_list {
83 const struct ov5675_reg *regs;
86 struct ov5675_link_freq_config {
87 const struct ov5675_reg_list reg_list;
91 /* Frame width in pixels */
94 /* Frame height in pixels */
97 /* Horizontal timining size */
100 /* Default vertical timining size */
103 /* Min vertical timining size */
106 /* Link frequency needed for this resolution */
109 /* Sensor register settings for this resolution */
110 const struct ov5675_reg_list reg_list;
113 static const struct ov5675_reg mipi_data_rate_900mbps[] = {
122 static const struct ov5675_reg mode_2592x1944_regs[] = {
275 static const struct ov5675_reg mode_1296x972_regs[] = {
428 static const char * const ov5675_test_pattern_menu[] = {
430 "Standard Color Bar",
431 "Top-Bottom Darker Color Bar",
432 "Right-Left Darker Color Bar",
433 "Bottom-Top Darker Color Bar"
436 static const s64 link_freq_menu_items[] = {
437 OV5675_LINK_FREQ_450MHZ,
440 static const struct ov5675_link_freq_config link_freq_configs[] = {
441 [OV5675_LINK_FREQ_900MBPS] = {
443 .num_of_regs = ARRAY_SIZE(mipi_data_rate_900mbps),
444 .regs = mipi_data_rate_900mbps,
449 static const struct ov5675_mode supported_modes[] = {
454 .vts_def = OV5675_VTS_30FPS,
455 .vts_min = OV5675_VTS_30FPS_MIN,
457 .num_of_regs = ARRAY_SIZE(mode_2592x1944_regs),
458 .regs = mode_2592x1944_regs,
460 .link_freq_index = OV5675_LINK_FREQ_900MBPS,
466 .vts_def = OV5675_VTS_30FPS,
467 .vts_min = OV5675_VTS_30FPS_MIN,
469 .num_of_regs = ARRAY_SIZE(mode_1296x972_regs),
470 .regs = mode_1296x972_regs,
472 .link_freq_index = OV5675_LINK_FREQ_900MBPS,
477 struct v4l2_subdev sd;
478 struct media_pad pad;
479 struct v4l2_ctrl_handler ctrl_handler;
482 struct v4l2_ctrl *link_freq;
483 struct v4l2_ctrl *pixel_rate;
484 struct v4l2_ctrl *vblank;
485 struct v4l2_ctrl *hblank;
486 struct v4l2_ctrl *exposure;
489 const struct ov5675_mode *cur_mode;
491 /* To serialize asynchronus callbacks */
494 /* Streaming on/off */
498 static u64 to_pixel_rate(u32 f_index)
500 u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV5675_DATA_LANES;
502 do_div(pixel_rate, OV5675_RGB_DEPTH);
507 static u64 to_pixels_per_line(u32 hts, u32 f_index)
509 u64 ppl = hts * to_pixel_rate(f_index);
511 do_div(ppl, OV5675_SCLK);
516 static int ov5675_read_reg(struct ov5675 *ov5675, u16 reg, u16 len, u32 *val)
518 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
519 struct i2c_msg msgs[2];
521 u8 data_buf[4] = {0};
527 put_unaligned_be16(reg, addr_buf);
528 msgs[0].addr = client->addr;
530 msgs[0].len = sizeof(addr_buf);
531 msgs[0].buf = addr_buf;
532 msgs[1].addr = client->addr;
533 msgs[1].flags = I2C_M_RD;
535 msgs[1].buf = &data_buf[4 - len];
537 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
538 if (ret != ARRAY_SIZE(msgs))
541 *val = get_unaligned_be32(data_buf);
546 static int ov5675_write_reg(struct ov5675 *ov5675, u16 reg, u16 len, u32 val)
548 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
554 put_unaligned_be16(reg, buf);
555 put_unaligned_be32(val << 8 * (4 - len), buf + 2);
556 if (i2c_master_send(client, buf, len + 2) != len + 2)
562 static int ov5675_write_reg_list(struct ov5675 *ov5675,
563 const struct ov5675_reg_list *r_list)
565 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
569 for (i = 0; i < r_list->num_of_regs; i++) {
570 ret = ov5675_write_reg(ov5675, r_list->regs[i].address, 1,
571 r_list->regs[i].val);
573 dev_err_ratelimited(&client->dev,
574 "failed to write reg 0x%4.4x. error = %d",
575 r_list->regs[i].address, ret);
583 static int ov5675_update_digital_gain(struct ov5675 *ov5675, u32 d_gain)
587 ret = ov5675_write_reg(ov5675, OV5675_REG_MWB_R_GAIN,
588 OV5675_REG_VALUE_16BIT, d_gain);
592 ret = ov5675_write_reg(ov5675, OV5675_REG_MWB_G_GAIN,
593 OV5675_REG_VALUE_16BIT, d_gain);
597 return ov5675_write_reg(ov5675, OV5675_REG_MWB_B_GAIN,
598 OV5675_REG_VALUE_16BIT, d_gain);
601 static int ov5675_test_pattern(struct ov5675 *ov5675, u32 pattern)
604 pattern = (pattern - 1) << OV5675_TEST_PATTERN_BAR_SHIFT |
605 OV5675_TEST_PATTERN_ENABLE;
607 return ov5675_write_reg(ov5675, OV5675_REG_TEST_PATTERN,
608 OV5675_REG_VALUE_08BIT, pattern);
612 * OV5675 supports keeping the pixel order by mirror and flip function
613 * The Bayer order isn't affected by the flip controls
615 static int ov5675_set_ctrl_hflip(struct ov5675 *ov5675, u32 ctrl_val)
620 ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT1,
621 OV5675_REG_VALUE_08BIT, &val);
625 return ov5675_write_reg(ov5675, OV5675_REG_FORMAT1,
626 OV5675_REG_VALUE_08BIT,
627 ctrl_val ? val & ~BIT(3) : val);
630 static int ov5675_set_ctrl_vflip(struct ov5675 *ov5675, u8 ctrl_val)
635 ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT1,
636 OV5675_REG_VALUE_08BIT, &val);
640 ret = ov5675_write_reg(ov5675, OV5675_REG_FORMAT1,
641 OV5675_REG_VALUE_08BIT,
642 ctrl_val ? val | BIT(4) | BIT(5) : val);
647 ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT2,
648 OV5675_REG_VALUE_08BIT, &val);
653 return ov5675_write_reg(ov5675, OV5675_REG_FORMAT2,
654 OV5675_REG_VALUE_08BIT,
655 ctrl_val ? val | BIT(1) : val);
658 static int ov5675_set_ctrl(struct v4l2_ctrl *ctrl)
660 struct ov5675 *ov5675 = container_of(ctrl->handler,
661 struct ov5675, ctrl_handler);
662 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
666 /* Propagate change of current control to all related controls */
667 if (ctrl->id == V4L2_CID_VBLANK) {
668 /* Update max exposure while meeting expected vblanking */
669 exposure_max = ov5675->cur_mode->height + ctrl->val -
670 OV5675_EXPOSURE_MAX_MARGIN;
671 __v4l2_ctrl_modify_range(ov5675->exposure,
672 ov5675->exposure->minimum,
673 exposure_max, ov5675->exposure->step,
677 /* V4L2 controls values will be applied only when power is already up */
678 if (!pm_runtime_get_if_in_use(&client->dev))
682 case V4L2_CID_ANALOGUE_GAIN:
683 ret = ov5675_write_reg(ov5675, OV5675_REG_ANALOG_GAIN,
684 OV5675_REG_VALUE_16BIT, ctrl->val);
687 case V4L2_CID_DIGITAL_GAIN:
688 ret = ov5675_update_digital_gain(ov5675, ctrl->val);
691 case V4L2_CID_EXPOSURE:
692 /* 4 least significant bits of expsoure are fractional part
694 * for ov5675, the unit of exposure is differnt from other
695 * OmniVision sensors, its exposure value is twice of the
696 * register value, the exposure should be divided by 2 before
697 * set register, e.g. val << 3.
699 ret = ov5675_write_reg(ov5675, OV5675_REG_EXPOSURE,
700 OV5675_REG_VALUE_24BIT, ctrl->val << 3);
703 case V4L2_CID_VBLANK:
704 ret = ov5675_write_reg(ov5675, OV5675_REG_VTS,
705 OV5675_REG_VALUE_16BIT,
706 ov5675->cur_mode->height + ctrl->val +
710 case V4L2_CID_TEST_PATTERN:
711 ret = ov5675_test_pattern(ov5675, ctrl->val);
715 ov5675_set_ctrl_hflip(ov5675, ctrl->val);
719 ov5675_set_ctrl_vflip(ov5675, ctrl->val);
727 pm_runtime_put(&client->dev);
732 static const struct v4l2_ctrl_ops ov5675_ctrl_ops = {
733 .s_ctrl = ov5675_set_ctrl,
736 static int ov5675_init_controls(struct ov5675 *ov5675)
738 struct v4l2_ctrl_handler *ctrl_hdlr;
739 s64 exposure_max, h_blank;
742 ctrl_hdlr = &ov5675->ctrl_handler;
743 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
747 ctrl_hdlr->lock = &ov5675->mutex;
748 ov5675->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov5675_ctrl_ops,
750 ARRAY_SIZE(link_freq_menu_items) - 1,
751 0, link_freq_menu_items);
752 if (ov5675->link_freq)
753 ov5675->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
755 ov5675->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
756 V4L2_CID_PIXEL_RATE, 0,
757 to_pixel_rate(OV5675_LINK_FREQ_900MBPS),
759 to_pixel_rate(OV5675_LINK_FREQ_900MBPS));
760 ov5675->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
762 ov5675->cur_mode->vts_min - ov5675->cur_mode->height,
763 OV5675_VTS_MAX - ov5675->cur_mode->height, 1,
764 ov5675->cur_mode->vts_def - ov5675->cur_mode->height);
765 h_blank = to_pixels_per_line(ov5675->cur_mode->hts,
766 ov5675->cur_mode->link_freq_index) - ov5675->cur_mode->width;
767 ov5675->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
768 V4L2_CID_HBLANK, h_blank, h_blank, 1,
771 ov5675->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
773 v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
774 OV5675_ANAL_GAIN_MIN, OV5675_ANAL_GAIN_MAX,
775 OV5675_ANAL_GAIN_STEP, OV5675_ANAL_GAIN_MIN);
776 v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
777 OV5675_DGTL_GAIN_MIN, OV5675_DGTL_GAIN_MAX,
778 OV5675_DGTL_GAIN_STEP, OV5675_DGTL_GAIN_DEFAULT);
779 exposure_max = (ov5675->cur_mode->vts_def - OV5675_EXPOSURE_MAX_MARGIN);
780 ov5675->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
782 OV5675_EXPOSURE_MIN, exposure_max,
783 OV5675_EXPOSURE_STEP,
785 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov5675_ctrl_ops,
786 V4L2_CID_TEST_PATTERN,
787 ARRAY_SIZE(ov5675_test_pattern_menu) - 1,
788 0, 0, ov5675_test_pattern_menu);
789 v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
790 V4L2_CID_HFLIP, 0, 1, 1, 0);
791 v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
792 V4L2_CID_VFLIP, 0, 1, 1, 0);
794 if (ctrl_hdlr->error)
795 return ctrl_hdlr->error;
797 ov5675->sd.ctrl_handler = ctrl_hdlr;
802 static void ov5675_update_pad_format(const struct ov5675_mode *mode,
803 struct v4l2_mbus_framefmt *fmt)
805 fmt->width = mode->width;
806 fmt->height = mode->height;
807 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
808 fmt->field = V4L2_FIELD_NONE;
811 static int ov5675_start_streaming(struct ov5675 *ov5675)
813 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
814 const struct ov5675_reg_list *reg_list;
815 int link_freq_index, ret;
817 link_freq_index = ov5675->cur_mode->link_freq_index;
818 reg_list = &link_freq_configs[link_freq_index].reg_list;
819 ret = ov5675_write_reg_list(ov5675, reg_list);
821 dev_err(&client->dev, "failed to set plls");
825 reg_list = &ov5675->cur_mode->reg_list;
826 ret = ov5675_write_reg_list(ov5675, reg_list);
828 dev_err(&client->dev, "failed to set mode");
832 ret = __v4l2_ctrl_handler_setup(ov5675->sd.ctrl_handler);
836 ret = ov5675_write_reg(ov5675, OV5675_REG_MODE_SELECT,
837 OV5675_REG_VALUE_08BIT, OV5675_MODE_STREAMING);
839 dev_err(&client->dev, "failed to set stream");
846 static void ov5675_stop_streaming(struct ov5675 *ov5675)
848 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
850 if (ov5675_write_reg(ov5675, OV5675_REG_MODE_SELECT,
851 OV5675_REG_VALUE_08BIT, OV5675_MODE_STANDBY))
852 dev_err(&client->dev, "failed to set stream");
855 static int ov5675_set_stream(struct v4l2_subdev *sd, int enable)
857 struct ov5675 *ov5675 = to_ov5675(sd);
858 struct i2c_client *client = v4l2_get_subdevdata(sd);
861 if (ov5675->streaming == enable)
864 mutex_lock(&ov5675->mutex);
866 ret = pm_runtime_get_sync(&client->dev);
868 pm_runtime_put_noidle(&client->dev);
869 mutex_unlock(&ov5675->mutex);
873 ret = ov5675_start_streaming(ov5675);
876 ov5675_stop_streaming(ov5675);
877 pm_runtime_put(&client->dev);
880 ov5675_stop_streaming(ov5675);
881 pm_runtime_put(&client->dev);
884 ov5675->streaming = enable;
885 mutex_unlock(&ov5675->mutex);
890 static int __maybe_unused ov5675_suspend(struct device *dev)
892 struct i2c_client *client = to_i2c_client(dev);
893 struct v4l2_subdev *sd = i2c_get_clientdata(client);
894 struct ov5675 *ov5675 = to_ov5675(sd);
896 mutex_lock(&ov5675->mutex);
897 if (ov5675->streaming)
898 ov5675_stop_streaming(ov5675);
900 mutex_unlock(&ov5675->mutex);
905 static int __maybe_unused ov5675_resume(struct device *dev)
907 struct i2c_client *client = to_i2c_client(dev);
908 struct v4l2_subdev *sd = i2c_get_clientdata(client);
909 struct ov5675 *ov5675 = to_ov5675(sd);
912 mutex_lock(&ov5675->mutex);
913 if (ov5675->streaming) {
914 ret = ov5675_start_streaming(ov5675);
916 ov5675->streaming = false;
917 ov5675_stop_streaming(ov5675);
918 mutex_unlock(&ov5675->mutex);
923 mutex_unlock(&ov5675->mutex);
928 static int ov5675_set_format(struct v4l2_subdev *sd,
929 struct v4l2_subdev_pad_config *cfg,
930 struct v4l2_subdev_format *fmt)
932 struct ov5675 *ov5675 = to_ov5675(sd);
933 const struct ov5675_mode *mode;
934 s32 vblank_def, h_blank;
936 mode = v4l2_find_nearest_size(supported_modes,
937 ARRAY_SIZE(supported_modes), width,
938 height, fmt->format.width,
941 mutex_lock(&ov5675->mutex);
942 ov5675_update_pad_format(mode, &fmt->format);
943 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
944 *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
946 ov5675->cur_mode = mode;
947 __v4l2_ctrl_s_ctrl(ov5675->link_freq, mode->link_freq_index);
948 __v4l2_ctrl_s_ctrl_int64(ov5675->pixel_rate,
949 to_pixel_rate(mode->link_freq_index));
951 /* Update limits and set FPS to default */
952 vblank_def = mode->vts_def - mode->height;
953 __v4l2_ctrl_modify_range(ov5675->vblank,
954 mode->vts_min - mode->height,
955 OV5675_VTS_MAX - mode->height, 1,
957 __v4l2_ctrl_s_ctrl(ov5675->vblank, vblank_def);
958 h_blank = to_pixels_per_line(mode->hts, mode->link_freq_index) -
960 __v4l2_ctrl_modify_range(ov5675->hblank, h_blank, h_blank, 1,
964 mutex_unlock(&ov5675->mutex);
969 static int ov5675_get_format(struct v4l2_subdev *sd,
970 struct v4l2_subdev_pad_config *cfg,
971 struct v4l2_subdev_format *fmt)
973 struct ov5675 *ov5675 = to_ov5675(sd);
975 mutex_lock(&ov5675->mutex);
976 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
977 fmt->format = *v4l2_subdev_get_try_format(&ov5675->sd, cfg,
980 ov5675_update_pad_format(ov5675->cur_mode, &fmt->format);
982 mutex_unlock(&ov5675->mutex);
987 static int ov5675_enum_mbus_code(struct v4l2_subdev *sd,
988 struct v4l2_subdev_pad_config *cfg,
989 struct v4l2_subdev_mbus_code_enum *code)
994 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
999 static int ov5675_enum_frame_size(struct v4l2_subdev *sd,
1000 struct v4l2_subdev_pad_config *cfg,
1001 struct v4l2_subdev_frame_size_enum *fse)
1003 if (fse->index >= ARRAY_SIZE(supported_modes))
1006 if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
1009 fse->min_width = supported_modes[fse->index].width;
1010 fse->max_width = fse->min_width;
1011 fse->min_height = supported_modes[fse->index].height;
1012 fse->max_height = fse->min_height;
1017 static int ov5675_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1019 struct ov5675 *ov5675 = to_ov5675(sd);
1021 mutex_lock(&ov5675->mutex);
1022 ov5675_update_pad_format(&supported_modes[0],
1023 v4l2_subdev_get_try_format(sd, fh->pad, 0));
1024 mutex_unlock(&ov5675->mutex);
1029 static const struct v4l2_subdev_video_ops ov5675_video_ops = {
1030 .s_stream = ov5675_set_stream,
1033 static const struct v4l2_subdev_pad_ops ov5675_pad_ops = {
1034 .set_fmt = ov5675_set_format,
1035 .get_fmt = ov5675_get_format,
1036 .enum_mbus_code = ov5675_enum_mbus_code,
1037 .enum_frame_size = ov5675_enum_frame_size,
1040 static const struct v4l2_subdev_ops ov5675_subdev_ops = {
1041 .video = &ov5675_video_ops,
1042 .pad = &ov5675_pad_ops,
1045 static const struct media_entity_operations ov5675_subdev_entity_ops = {
1046 .link_validate = v4l2_subdev_link_validate,
1049 static const struct v4l2_subdev_internal_ops ov5675_internal_ops = {
1050 .open = ov5675_open,
1053 static int ov5675_identify_module(struct ov5675 *ov5675)
1055 struct i2c_client *client = v4l2_get_subdevdata(&ov5675->sd);
1059 ret = ov5675_read_reg(ov5675, OV5675_REG_CHIP_ID,
1060 OV5675_REG_VALUE_24BIT, &val);
1064 if (val != OV5675_CHIP_ID) {
1065 dev_err(&client->dev, "chip id mismatch: %x!=%x",
1066 OV5675_CHIP_ID, val);
1073 static int ov5675_check_hwcfg(struct device *dev)
1075 struct fwnode_handle *ep;
1076 struct fwnode_handle *fwnode = dev_fwnode(dev);
1077 struct v4l2_fwnode_endpoint bus_cfg = {
1078 .bus_type = V4L2_MBUS_CSI2_DPHY
1087 ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
1090 dev_err(dev, "can't get clock frequency");
1094 if (mclk != OV5675_MCLK) {
1095 dev_err(dev, "external clock %d is not supported", mclk);
1099 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
1103 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
1104 fwnode_handle_put(ep);
1108 if (bus_cfg.bus.mipi_csi2.num_data_lanes != OV5675_DATA_LANES) {
1109 dev_err(dev, "number of CSI2 data lanes %d is not supported",
1110 bus_cfg.bus.mipi_csi2.num_data_lanes);
1112 goto check_hwcfg_error;
1115 if (!bus_cfg.nr_of_link_frequencies) {
1116 dev_err(dev, "no link frequencies defined");
1118 goto check_hwcfg_error;
1121 for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) {
1122 for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) {
1123 if (link_freq_menu_items[i] ==
1124 bus_cfg.link_frequencies[j])
1128 if (j == bus_cfg.nr_of_link_frequencies) {
1129 dev_err(dev, "no link frequency %lld supported",
1130 link_freq_menu_items[i]);
1132 goto check_hwcfg_error;
1137 v4l2_fwnode_endpoint_free(&bus_cfg);
1142 static int ov5675_remove(struct i2c_client *client)
1144 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1145 struct ov5675 *ov5675 = to_ov5675(sd);
1147 v4l2_async_unregister_subdev(sd);
1148 media_entity_cleanup(&sd->entity);
1149 v4l2_ctrl_handler_free(sd->ctrl_handler);
1150 pm_runtime_disable(&client->dev);
1151 mutex_destroy(&ov5675->mutex);
1156 static int ov5675_probe(struct i2c_client *client)
1158 struct ov5675 *ov5675;
1161 ret = ov5675_check_hwcfg(&client->dev);
1163 dev_err(&client->dev, "failed to check HW configuration: %d",
1168 ov5675 = devm_kzalloc(&client->dev, sizeof(*ov5675), GFP_KERNEL);
1172 v4l2_i2c_subdev_init(&ov5675->sd, client, &ov5675_subdev_ops);
1173 ret = ov5675_identify_module(ov5675);
1175 dev_err(&client->dev, "failed to find sensor: %d", ret);
1179 mutex_init(&ov5675->mutex);
1180 ov5675->cur_mode = &supported_modes[0];
1181 ret = ov5675_init_controls(ov5675);
1183 dev_err(&client->dev, "failed to init controls: %d", ret);
1184 goto probe_error_v4l2_ctrl_handler_free;
1187 ov5675->sd.internal_ops = &ov5675_internal_ops;
1188 ov5675->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1189 ov5675->sd.entity.ops = &ov5675_subdev_entity_ops;
1190 ov5675->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1191 ov5675->pad.flags = MEDIA_PAD_FL_SOURCE;
1192 ret = media_entity_pads_init(&ov5675->sd.entity, 1, &ov5675->pad);
1194 dev_err(&client->dev, "failed to init entity pads: %d", ret);
1195 goto probe_error_v4l2_ctrl_handler_free;
1198 ret = v4l2_async_register_subdev_sensor_common(&ov5675->sd);
1200 dev_err(&client->dev, "failed to register V4L2 subdev: %d",
1202 goto probe_error_media_entity_cleanup;
1206 * Device is already turned on by i2c-core with ACPI domain PM.
1207 * Enable runtime PM and turn off the device.
1209 pm_runtime_set_active(&client->dev);
1210 pm_runtime_enable(&client->dev);
1211 pm_runtime_idle(&client->dev);
1215 probe_error_media_entity_cleanup:
1216 media_entity_cleanup(&ov5675->sd.entity);
1218 probe_error_v4l2_ctrl_handler_free:
1219 v4l2_ctrl_handler_free(ov5675->sd.ctrl_handler);
1220 mutex_destroy(&ov5675->mutex);
1225 static const struct dev_pm_ops ov5675_pm_ops = {
1226 SET_SYSTEM_SLEEP_PM_OPS(ov5675_suspend, ov5675_resume)
1230 static const struct acpi_device_id ov5675_acpi_ids[] = {
1235 MODULE_DEVICE_TABLE(acpi, ov5675_acpi_ids);
1238 static struct i2c_driver ov5675_i2c_driver = {
1241 .pm = &ov5675_pm_ops,
1242 .acpi_match_table = ACPI_PTR(ov5675_acpi_ids),
1244 .probe_new = ov5675_probe,
1245 .remove = ov5675_remove,
1248 module_i2c_driver(ov5675_i2c_driver);
1250 MODULE_AUTHOR("Shawn Tu <shawnx.tu@intel.com>");
1251 MODULE_DESCRIPTION("OmniVision OV5675 sensor driver");
1252 MODULE_LICENSE("GPL v2");