2 * Driver for the OV5645 camera sensor.
4 * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
5 * Copyright (C) 2015 By Tech Design S.L. All Rights Reserved.
6 * Copyright (C) 2012-2013 Freescale Semiconductor, Inc. All Rights Reserved.
9 * - the OV5645 driver from QC msm-3.10 kernel on codeaurora.org:
10 * https://us.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/
11 * media/platform/msm/camera_v2/sensor/ov5645.c?h=LA.BR.1.2.4_rb1.41
12 * - the OV5640 driver posted on linux-media:
13 * https://www.mail-archive.com/linux-media%40vger.kernel.org/msg92671.html
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
28 #include <linux/bitops.h>
29 #include <linux/clk.h>
30 #include <linux/delay.h>
31 #include <linux/device.h>
32 #include <linux/gpio/consumer.h>
33 #include <linux/i2c.h>
34 #include <linux/init.h>
35 #include <linux/module.h>
37 #include <linux/of_graph.h>
38 #include <linux/regulator/consumer.h>
39 #include <linux/slab.h>
40 #include <linux/types.h>
41 #include <media/v4l2-ctrls.h>
42 #include <media/v4l2-fwnode.h>
43 #include <media/v4l2-subdev.h>
45 #define OV5645_VOLTAGE_ANALOG 2800000
46 #define OV5645_VOLTAGE_DIGITAL_CORE 1500000
47 #define OV5645_VOLTAGE_DIGITAL_IO 1800000
49 #define OV5645_SYSTEM_CTRL0 0x3008
50 #define OV5645_SYSTEM_CTRL0_START 0x02
51 #define OV5645_SYSTEM_CTRL0_STOP 0x42
52 #define OV5645_CHIP_ID_HIGH 0x300a
53 #define OV5645_CHIP_ID_HIGH_BYTE 0x56
54 #define OV5645_CHIP_ID_LOW 0x300b
55 #define OV5645_CHIP_ID_LOW_BYTE 0x45
56 #define OV5645_IO_MIPI_CTRL00 0x300e
57 #define OV5645_PAD_OUTPUT00 0x3019
58 #define OV5645_AWB_MANUAL_CONTROL 0x3406
59 #define OV5645_AWB_MANUAL_ENABLE BIT(0)
60 #define OV5645_AEC_PK_MANUAL 0x3503
61 #define OV5645_AEC_MANUAL_ENABLE BIT(0)
62 #define OV5645_AGC_MANUAL_ENABLE BIT(1)
63 #define OV5645_TIMING_TC_REG20 0x3820
64 #define OV5645_SENSOR_VFLIP BIT(1)
65 #define OV5645_ISP_VFLIP BIT(2)
66 #define OV5645_TIMING_TC_REG21 0x3821
67 #define OV5645_SENSOR_MIRROR BIT(1)
68 #define OV5645_MIPI_CTRL00 0x4800
69 #define OV5645_PRE_ISP_TEST_SETTING_1 0x503d
70 #define OV5645_TEST_PATTERN_MASK 0x3
71 #define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK)
72 #define OV5645_TEST_PATTERN_ENABLE BIT(7)
73 #define OV5645_SDE_SAT_U 0x5583
74 #define OV5645_SDE_SAT_V 0x5584
81 struct ov5645_mode_info {
84 const struct reg_value *data;
91 struct i2c_client *i2c_client;
93 struct v4l2_subdev sd;
95 struct v4l2_fwnode_endpoint ep;
96 struct v4l2_mbus_framefmt fmt;
97 struct v4l2_rect crop;
100 struct regulator *io_regulator;
101 struct regulator *core_regulator;
102 struct regulator *analog_regulator;
104 const struct ov5645_mode_info *current_mode;
106 struct v4l2_ctrl_handler ctrls;
107 struct v4l2_ctrl *pixel_clock;
108 struct v4l2_ctrl *link_freq;
110 /* Cached register values */
115 struct mutex power_lock; /* lock to protect power state */
118 struct gpio_desc *enable_gpio;
119 struct gpio_desc *rst_gpio;
122 static inline struct ov5645 *to_ov5645(struct v4l2_subdev *sd)
124 return container_of(sd, struct ov5645, sd);
127 static const struct reg_value ov5645_global_init_setting[] = {
364 { OV5645_IO_MIPI_CTRL00, 0x40 },
365 { OV5645_MIPI_CTRL00, 0x24 },
366 { OV5645_PAD_OUTPUT00, 0x70 }
369 static const struct reg_value ov5645_setting_sxga[] = {
417 static const struct reg_value ov5645_setting_1080p[] = {
467 static const struct reg_value ov5645_setting_full[] = {
517 static const s64 link_freq[] = {
522 static const struct ov5645_mode_info ov5645_mode_info_data[] = {
526 .data = ov5645_setting_sxga,
527 .data_size = ARRAY_SIZE(ov5645_setting_sxga),
528 .pixel_clock = 112000000,
529 .link_freq = 0 /* an index in link_freq[] */
534 .data = ov5645_setting_1080p,
535 .data_size = ARRAY_SIZE(ov5645_setting_1080p),
536 .pixel_clock = 168000000,
537 .link_freq = 1 /* an index in link_freq[] */
542 .data = ov5645_setting_full,
543 .data_size = ARRAY_SIZE(ov5645_setting_full),
544 .pixel_clock = 168000000,
545 .link_freq = 1 /* an index in link_freq[] */
549 static int ov5645_regulators_enable(struct ov5645 *ov5645)
553 ret = regulator_enable(ov5645->io_regulator);
555 dev_err(ov5645->dev, "set io voltage failed\n");
559 ret = regulator_enable(ov5645->analog_regulator);
561 dev_err(ov5645->dev, "set analog voltage failed\n");
565 ret = regulator_enable(ov5645->core_regulator);
567 dev_err(ov5645->dev, "set core voltage failed\n");
568 goto err_disable_analog;
574 regulator_disable(ov5645->analog_regulator);
576 regulator_disable(ov5645->io_regulator);
581 static void ov5645_regulators_disable(struct ov5645 *ov5645)
585 ret = regulator_disable(ov5645->core_regulator);
587 dev_err(ov5645->dev, "core regulator disable failed\n");
589 ret = regulator_disable(ov5645->analog_regulator);
591 dev_err(ov5645->dev, "analog regulator disable failed\n");
593 ret = regulator_disable(ov5645->io_regulator);
595 dev_err(ov5645->dev, "io regulator disable failed\n");
598 static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val)
603 regbuf[0] = reg >> 8;
604 regbuf[1] = reg & 0xff;
607 ret = i2c_master_send(ov5645->i2c_client, regbuf, 3);
609 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x, val=%x\n",
610 __func__, ret, reg, val);
617 static int ov5645_read_reg(struct ov5645 *ov5645, u16 reg, u8 *val)
622 regbuf[0] = reg >> 8;
623 regbuf[1] = reg & 0xff;
625 ret = i2c_master_send(ov5645->i2c_client, regbuf, 2);
627 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x\n",
632 ret = i2c_master_recv(ov5645->i2c_client, val, 1);
634 dev_err(ov5645->dev, "%s: read reg error %d: reg=%x\n",
642 static int ov5645_set_aec_mode(struct ov5645 *ov5645, u32 mode)
644 u8 val = ov5645->aec_pk_manual;
647 if (mode == V4L2_EXPOSURE_AUTO)
648 val &= ~OV5645_AEC_MANUAL_ENABLE;
649 else /* V4L2_EXPOSURE_MANUAL */
650 val |= OV5645_AEC_MANUAL_ENABLE;
652 ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val);
654 ov5645->aec_pk_manual = val;
659 static int ov5645_set_agc_mode(struct ov5645 *ov5645, u32 enable)
661 u8 val = ov5645->aec_pk_manual;
665 val &= ~OV5645_AGC_MANUAL_ENABLE;
667 val |= OV5645_AGC_MANUAL_ENABLE;
669 ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val);
671 ov5645->aec_pk_manual = val;
676 static int ov5645_set_register_array(struct ov5645 *ov5645,
677 const struct reg_value *settings,
678 unsigned int num_settings)
683 for (i = 0; i < num_settings; ++i, ++settings) {
684 ret = ov5645_write_reg(ov5645, settings->reg, settings->val);
692 static int ov5645_set_power_on(struct ov5645 *ov5645)
696 ret = ov5645_regulators_enable(ov5645);
701 ret = clk_prepare_enable(ov5645->xclk);
703 dev_err(ov5645->dev, "clk prepare enable failed\n");
704 ov5645_regulators_disable(ov5645);
708 usleep_range(5000, 15000);
709 gpiod_set_value_cansleep(ov5645->enable_gpio, 1);
711 usleep_range(1000, 2000);
712 gpiod_set_value_cansleep(ov5645->rst_gpio, 0);
719 static void ov5645_set_power_off(struct ov5645 *ov5645)
721 gpiod_set_value_cansleep(ov5645->rst_gpio, 1);
722 gpiod_set_value_cansleep(ov5645->enable_gpio, 0);
723 clk_disable_unprepare(ov5645->xclk);
724 ov5645_regulators_disable(ov5645);
727 static int ov5645_s_power(struct v4l2_subdev *sd, int on)
729 struct ov5645 *ov5645 = to_ov5645(sd);
732 mutex_lock(&ov5645->power_lock);
734 /* If the power count is modified from 0 to != 0 or from != 0 to 0,
735 * update the power state.
737 if (ov5645->power_count == !on) {
739 ret = ov5645_set_power_on(ov5645);
743 ret = ov5645_set_register_array(ov5645,
744 ov5645_global_init_setting,
745 ARRAY_SIZE(ov5645_global_init_setting));
748 "could not set init registers\n");
749 ov5645_set_power_off(ov5645);
753 usleep_range(500, 1000);
755 ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x58);
756 ov5645_set_power_off(ov5645);
760 /* Update the power count. */
761 ov5645->power_count += on ? 1 : -1;
762 WARN_ON(ov5645->power_count < 0);
765 mutex_unlock(&ov5645->power_lock);
770 static int ov5645_set_saturation(struct ov5645 *ov5645, s32 value)
772 u32 reg_value = (value * 0x10) + 0x40;
775 ret = ov5645_write_reg(ov5645, OV5645_SDE_SAT_U, reg_value);
779 return ov5645_write_reg(ov5645, OV5645_SDE_SAT_V, reg_value);
782 static int ov5645_set_hflip(struct ov5645 *ov5645, s32 value)
784 u8 val = ov5645->timing_tc_reg21;
788 val &= ~(OV5645_SENSOR_MIRROR);
790 val |= (OV5645_SENSOR_MIRROR);
792 ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG21, val);
794 ov5645->timing_tc_reg21 = val;
799 static int ov5645_set_vflip(struct ov5645 *ov5645, s32 value)
801 u8 val = ov5645->timing_tc_reg20;
805 val |= (OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP);
807 val &= ~(OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP);
809 ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG20, val);
811 ov5645->timing_tc_reg20 = val;
816 static int ov5645_set_test_pattern(struct ov5645 *ov5645, s32 value)
821 val = OV5645_SET_TEST_PATTERN(value - 1);
822 val |= OV5645_TEST_PATTERN_ENABLE;
825 return ov5645_write_reg(ov5645, OV5645_PRE_ISP_TEST_SETTING_1, val);
828 static const char * const ov5645_test_pattern_menu[] = {
830 "Vertical Color Bars",
831 "Pseudo-Random Data",
836 static int ov5645_set_awb(struct ov5645 *ov5645, s32 enable_auto)
841 val = OV5645_AWB_MANUAL_ENABLE;
843 return ov5645_write_reg(ov5645, OV5645_AWB_MANUAL_CONTROL, val);
846 static int ov5645_s_ctrl(struct v4l2_ctrl *ctrl)
848 struct ov5645 *ov5645 = container_of(ctrl->handler,
849 struct ov5645, ctrls);
852 mutex_lock(&ov5645->power_lock);
853 if (!ov5645->power_count) {
854 mutex_unlock(&ov5645->power_lock);
859 case V4L2_CID_SATURATION:
860 ret = ov5645_set_saturation(ov5645, ctrl->val);
862 case V4L2_CID_AUTO_WHITE_BALANCE:
863 ret = ov5645_set_awb(ov5645, ctrl->val);
865 case V4L2_CID_AUTOGAIN:
866 ret = ov5645_set_agc_mode(ov5645, ctrl->val);
868 case V4L2_CID_EXPOSURE_AUTO:
869 ret = ov5645_set_aec_mode(ov5645, ctrl->val);
871 case V4L2_CID_TEST_PATTERN:
872 ret = ov5645_set_test_pattern(ov5645, ctrl->val);
875 ret = ov5645_set_hflip(ov5645, ctrl->val);
878 ret = ov5645_set_vflip(ov5645, ctrl->val);
885 mutex_unlock(&ov5645->power_lock);
890 static struct v4l2_ctrl_ops ov5645_ctrl_ops = {
891 .s_ctrl = ov5645_s_ctrl,
894 static int ov5645_enum_mbus_code(struct v4l2_subdev *sd,
895 struct v4l2_subdev_pad_config *cfg,
896 struct v4l2_subdev_mbus_code_enum *code)
901 code->code = MEDIA_BUS_FMT_UYVY8_2X8;
906 static int ov5645_enum_frame_size(struct v4l2_subdev *subdev,
907 struct v4l2_subdev_pad_config *cfg,
908 struct v4l2_subdev_frame_size_enum *fse)
910 if (fse->code != MEDIA_BUS_FMT_UYVY8_2X8)
913 if (fse->index >= ARRAY_SIZE(ov5645_mode_info_data))
916 fse->min_width = ov5645_mode_info_data[fse->index].width;
917 fse->max_width = ov5645_mode_info_data[fse->index].width;
918 fse->min_height = ov5645_mode_info_data[fse->index].height;
919 fse->max_height = ov5645_mode_info_data[fse->index].height;
924 static struct v4l2_mbus_framefmt *
925 __ov5645_get_pad_format(struct ov5645 *ov5645,
926 struct v4l2_subdev_pad_config *cfg,
928 enum v4l2_subdev_format_whence which)
931 case V4L2_SUBDEV_FORMAT_TRY:
932 return v4l2_subdev_get_try_format(&ov5645->sd, cfg, pad);
933 case V4L2_SUBDEV_FORMAT_ACTIVE:
940 static int ov5645_get_format(struct v4l2_subdev *sd,
941 struct v4l2_subdev_pad_config *cfg,
942 struct v4l2_subdev_format *format)
944 struct ov5645 *ov5645 = to_ov5645(sd);
946 format->format = *__ov5645_get_pad_format(ov5645, cfg, format->pad,
951 static struct v4l2_rect *
952 __ov5645_get_pad_crop(struct ov5645 *ov5645, struct v4l2_subdev_pad_config *cfg,
953 unsigned int pad, enum v4l2_subdev_format_whence which)
956 case V4L2_SUBDEV_FORMAT_TRY:
957 return v4l2_subdev_get_try_crop(&ov5645->sd, cfg, pad);
958 case V4L2_SUBDEV_FORMAT_ACTIVE:
959 return &ov5645->crop;
965 static int ov5645_set_format(struct v4l2_subdev *sd,
966 struct v4l2_subdev_pad_config *cfg,
967 struct v4l2_subdev_format *format)
969 struct ov5645 *ov5645 = to_ov5645(sd);
970 struct v4l2_mbus_framefmt *__format;
971 struct v4l2_rect *__crop;
972 const struct ov5645_mode_info *new_mode;
975 __crop = __ov5645_get_pad_crop(ov5645, cfg, format->pad,
978 new_mode = v4l2_find_nearest_size(ov5645_mode_info_data,
979 ARRAY_SIZE(ov5645_mode_info_data),
981 format->format.width, format->format.height);
983 __crop->width = new_mode->width;
984 __crop->height = new_mode->height;
986 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
987 ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
988 new_mode->pixel_clock);
992 ret = v4l2_ctrl_s_ctrl(ov5645->link_freq,
993 new_mode->link_freq);
997 ov5645->current_mode = new_mode;
1000 __format = __ov5645_get_pad_format(ov5645, cfg, format->pad,
1002 __format->width = __crop->width;
1003 __format->height = __crop->height;
1004 __format->code = MEDIA_BUS_FMT_UYVY8_2X8;
1005 __format->field = V4L2_FIELD_NONE;
1006 __format->colorspace = V4L2_COLORSPACE_SRGB;
1008 format->format = *__format;
1013 static int ov5645_entity_init_cfg(struct v4l2_subdev *subdev,
1014 struct v4l2_subdev_pad_config *cfg)
1016 struct v4l2_subdev_format fmt = { 0 };
1018 fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
1019 fmt.format.width = 1920;
1020 fmt.format.height = 1080;
1022 ov5645_set_format(subdev, cfg, &fmt);
1027 static int ov5645_get_selection(struct v4l2_subdev *sd,
1028 struct v4l2_subdev_pad_config *cfg,
1029 struct v4l2_subdev_selection *sel)
1031 struct ov5645 *ov5645 = to_ov5645(sd);
1033 if (sel->target != V4L2_SEL_TGT_CROP)
1036 sel->r = *__ov5645_get_pad_crop(ov5645, cfg, sel->pad,
1041 static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
1043 struct ov5645 *ov5645 = to_ov5645(subdev);
1047 ret = ov5645_set_register_array(ov5645,
1048 ov5645->current_mode->data,
1049 ov5645->current_mode->data_size);
1051 dev_err(ov5645->dev, "could not set mode %dx%d\n",
1052 ov5645->current_mode->width,
1053 ov5645->current_mode->height);
1056 ret = v4l2_ctrl_handler_setup(&ov5645->ctrls);
1058 dev_err(ov5645->dev, "could not sync v4l2 controls\n");
1062 ret = ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x45);
1066 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
1067 OV5645_SYSTEM_CTRL0_START);
1071 ret = ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x40);
1075 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
1076 OV5645_SYSTEM_CTRL0_STOP);
1084 static const struct v4l2_subdev_core_ops ov5645_core_ops = {
1085 .s_power = ov5645_s_power,
1088 static const struct v4l2_subdev_video_ops ov5645_video_ops = {
1089 .s_stream = ov5645_s_stream,
1092 static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = {
1093 .init_cfg = ov5645_entity_init_cfg,
1094 .enum_mbus_code = ov5645_enum_mbus_code,
1095 .enum_frame_size = ov5645_enum_frame_size,
1096 .get_fmt = ov5645_get_format,
1097 .set_fmt = ov5645_set_format,
1098 .get_selection = ov5645_get_selection,
1101 static const struct v4l2_subdev_ops ov5645_subdev_ops = {
1102 .core = &ov5645_core_ops,
1103 .video = &ov5645_video_ops,
1104 .pad = &ov5645_subdev_pad_ops,
1107 static int ov5645_probe(struct i2c_client *client,
1108 const struct i2c_device_id *id)
1110 struct device *dev = &client->dev;
1111 struct device_node *endpoint;
1112 struct ov5645 *ov5645;
1113 u8 chip_id_high, chip_id_low;
1117 ov5645 = devm_kzalloc(dev, sizeof(struct ov5645), GFP_KERNEL);
1121 ov5645->i2c_client = client;
1124 endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
1126 dev_err(dev, "endpoint node not found\n");
1130 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1133 of_node_put(endpoint);
1136 dev_err(dev, "parsing endpoint node failed\n");
1140 if (ov5645->ep.bus_type != V4L2_MBUS_CSI2) {
1141 dev_err(dev, "invalid bus type, must be CSI2\n");
1145 /* get system clock (xclk) */
1146 ov5645->xclk = devm_clk_get(dev, "xclk");
1147 if (IS_ERR(ov5645->xclk)) {
1148 dev_err(dev, "could not get xclk");
1149 return PTR_ERR(ov5645->xclk);
1152 ret = of_property_read_u32(dev->of_node, "clock-frequency", &xclk_freq);
1154 dev_err(dev, "could not get xclk frequency\n");
1158 /* external clock must be 24MHz, allow 1% tolerance */
1159 if (xclk_freq < 23760000 || xclk_freq > 24240000) {
1160 dev_err(dev, "external clock frequency %u is not supported\n",
1165 ret = clk_set_rate(ov5645->xclk, xclk_freq);
1167 dev_err(dev, "could not set xclk frequency\n");
1171 ov5645->io_regulator = devm_regulator_get(dev, "vdddo");
1172 if (IS_ERR(ov5645->io_regulator)) {
1173 dev_err(dev, "cannot get io regulator\n");
1174 return PTR_ERR(ov5645->io_regulator);
1177 ret = regulator_set_voltage(ov5645->io_regulator,
1178 OV5645_VOLTAGE_DIGITAL_IO,
1179 OV5645_VOLTAGE_DIGITAL_IO);
1181 dev_err(dev, "cannot set io voltage\n");
1185 ov5645->core_regulator = devm_regulator_get(dev, "vddd");
1186 if (IS_ERR(ov5645->core_regulator)) {
1187 dev_err(dev, "cannot get core regulator\n");
1188 return PTR_ERR(ov5645->core_regulator);
1191 ret = regulator_set_voltage(ov5645->core_regulator,
1192 OV5645_VOLTAGE_DIGITAL_CORE,
1193 OV5645_VOLTAGE_DIGITAL_CORE);
1195 dev_err(dev, "cannot set core voltage\n");
1199 ov5645->analog_regulator = devm_regulator_get(dev, "vdda");
1200 if (IS_ERR(ov5645->analog_regulator)) {
1201 dev_err(dev, "cannot get analog regulator\n");
1202 return PTR_ERR(ov5645->analog_regulator);
1205 ret = regulator_set_voltage(ov5645->analog_regulator,
1206 OV5645_VOLTAGE_ANALOG,
1207 OV5645_VOLTAGE_ANALOG);
1209 dev_err(dev, "cannot set analog voltage\n");
1213 ov5645->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
1214 if (IS_ERR(ov5645->enable_gpio)) {
1215 dev_err(dev, "cannot get enable gpio\n");
1216 return PTR_ERR(ov5645->enable_gpio);
1219 ov5645->rst_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
1220 if (IS_ERR(ov5645->rst_gpio)) {
1221 dev_err(dev, "cannot get reset gpio\n");
1222 return PTR_ERR(ov5645->rst_gpio);
1225 mutex_init(&ov5645->power_lock);
1227 v4l2_ctrl_handler_init(&ov5645->ctrls, 9);
1228 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1229 V4L2_CID_SATURATION, -4, 4, 1, 0);
1230 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1231 V4L2_CID_HFLIP, 0, 1, 1, 0);
1232 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1233 V4L2_CID_VFLIP, 0, 1, 1, 0);
1234 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1235 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1236 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1237 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
1238 v4l2_ctrl_new_std_menu(&ov5645->ctrls, &ov5645_ctrl_ops,
1239 V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL,
1240 0, V4L2_EXPOSURE_AUTO);
1241 v4l2_ctrl_new_std_menu_items(&ov5645->ctrls, &ov5645_ctrl_ops,
1242 V4L2_CID_TEST_PATTERN,
1243 ARRAY_SIZE(ov5645_test_pattern_menu) - 1,
1244 0, 0, ov5645_test_pattern_menu);
1245 ov5645->pixel_clock = v4l2_ctrl_new_std(&ov5645->ctrls,
1247 V4L2_CID_PIXEL_RATE,
1249 ov5645->link_freq = v4l2_ctrl_new_int_menu(&ov5645->ctrls,
1252 ARRAY_SIZE(link_freq) - 1,
1254 if (ov5645->link_freq)
1255 ov5645->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1257 ov5645->sd.ctrl_handler = &ov5645->ctrls;
1259 if (ov5645->ctrls.error) {
1260 dev_err(dev, "%s: control initialization error %d\n",
1261 __func__, ov5645->ctrls.error);
1262 ret = ov5645->ctrls.error;
1266 v4l2_i2c_subdev_init(&ov5645->sd, client, &ov5645_subdev_ops);
1267 ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1268 ov5645->pad.flags = MEDIA_PAD_FL_SOURCE;
1269 ov5645->sd.dev = &client->dev;
1270 ov5645->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1272 ret = media_entity_pads_init(&ov5645->sd.entity, 1, &ov5645->pad);
1274 dev_err(dev, "could not register media entity\n");
1278 ret = ov5645_s_power(&ov5645->sd, true);
1280 dev_err(dev, "could not power up OV5645\n");
1284 ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_HIGH, &chip_id_high);
1285 if (ret < 0 || chip_id_high != OV5645_CHIP_ID_HIGH_BYTE) {
1286 dev_err(dev, "could not read ID high\n");
1290 ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_LOW, &chip_id_low);
1291 if (ret < 0 || chip_id_low != OV5645_CHIP_ID_LOW_BYTE) {
1292 dev_err(dev, "could not read ID low\n");
1297 dev_info(dev, "OV5645 detected at address 0x%02x\n", client->addr);
1299 ret = ov5645_read_reg(ov5645, OV5645_AEC_PK_MANUAL,
1300 &ov5645->aec_pk_manual);
1302 dev_err(dev, "could not read AEC/AGC mode\n");
1307 ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG20,
1308 &ov5645->timing_tc_reg20);
1310 dev_err(dev, "could not read vflip value\n");
1315 ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG21,
1316 &ov5645->timing_tc_reg21);
1318 dev_err(dev, "could not read hflip value\n");
1323 ov5645_s_power(&ov5645->sd, false);
1325 ret = v4l2_async_register_subdev(&ov5645->sd);
1327 dev_err(dev, "could not register v4l2 device\n");
1331 ov5645_entity_init_cfg(&ov5645->sd, NULL);
1336 ov5645_s_power(&ov5645->sd, false);
1338 media_entity_cleanup(&ov5645->sd.entity);
1340 v4l2_ctrl_handler_free(&ov5645->ctrls);
1341 mutex_destroy(&ov5645->power_lock);
1346 static int ov5645_remove(struct i2c_client *client)
1348 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1349 struct ov5645 *ov5645 = to_ov5645(sd);
1351 v4l2_async_unregister_subdev(&ov5645->sd);
1352 media_entity_cleanup(&ov5645->sd.entity);
1353 v4l2_ctrl_handler_free(&ov5645->ctrls);
1354 mutex_destroy(&ov5645->power_lock);
1359 static const struct i2c_device_id ov5645_id[] = {
1363 MODULE_DEVICE_TABLE(i2c, ov5645_id);
1365 static const struct of_device_id ov5645_of_match[] = {
1366 { .compatible = "ovti,ov5645" },
1369 MODULE_DEVICE_TABLE(of, ov5645_of_match);
1371 static struct i2c_driver ov5645_i2c_driver = {
1373 .of_match_table = of_match_ptr(ov5645_of_match),
1376 .probe = ov5645_probe,
1377 .remove = ov5645_remove,
1378 .id_table = ov5645_id,
1381 module_i2c_driver(ov5645_i2c_driver);
1383 MODULE_DESCRIPTION("Omnivision OV5645 Camera Driver");
1384 MODULE_AUTHOR("Todor Tomov <todor.tomov@linaro.org>");
1385 MODULE_LICENSE("GPL v2");