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_AWB_MANUAL_CONTROL 0x3406
57 #define OV5645_AWB_MANUAL_ENABLE BIT(0)
58 #define OV5645_AEC_PK_MANUAL 0x3503
59 #define OV5645_AEC_MANUAL_ENABLE BIT(0)
60 #define OV5645_AGC_MANUAL_ENABLE BIT(1)
61 #define OV5645_TIMING_TC_REG20 0x3820
62 #define OV5645_SENSOR_VFLIP BIT(1)
63 #define OV5645_ISP_VFLIP BIT(2)
64 #define OV5645_TIMING_TC_REG21 0x3821
65 #define OV5645_SENSOR_MIRROR BIT(1)
66 #define OV5645_PRE_ISP_TEST_SETTING_1 0x503d
67 #define OV5645_TEST_PATTERN_MASK 0x3
68 #define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK)
69 #define OV5645_TEST_PATTERN_ENABLE BIT(7)
70 #define OV5645_SDE_SAT_U 0x5583
71 #define OV5645_SDE_SAT_V 0x5584
78 struct ov5645_mode_info
{
81 const struct reg_value
*data
;
86 struct i2c_client
*i2c_client
;
88 struct v4l2_subdev sd
;
90 struct v4l2_fwnode_endpoint ep
;
91 struct v4l2_mbus_framefmt fmt
;
92 struct v4l2_rect crop
;
95 struct regulator
*io_regulator
;
96 struct regulator
*core_regulator
;
97 struct regulator
*analog_regulator
;
99 const struct ov5645_mode_info
*current_mode
;
101 struct v4l2_ctrl_handler ctrls
;
103 /* Cached register values */
108 struct mutex power_lock
; /* lock to protect power state */
111 struct gpio_desc
*enable_gpio
;
112 struct gpio_desc
*rst_gpio
;
115 static inline struct ov5645
*to_ov5645(struct v4l2_subdev
*sd
)
117 return container_of(sd
, struct ov5645
, sd
);
120 static const struct reg_value ov5645_global_init_setting
[] = {
360 static const struct reg_value ov5645_setting_sxga
[] = {
408 static const struct reg_value ov5645_setting_1080p
[] = {
458 static const struct reg_value ov5645_setting_full
[] = {
508 static const struct ov5645_mode_info ov5645_mode_info_data
[] = {
512 .data
= ov5645_setting_sxga
,
513 .data_size
= ARRAY_SIZE(ov5645_setting_sxga
)
518 .data
= ov5645_setting_1080p
,
519 .data_size
= ARRAY_SIZE(ov5645_setting_1080p
)
524 .data
= ov5645_setting_full
,
525 .data_size
= ARRAY_SIZE(ov5645_setting_full
)
529 static int ov5645_regulators_enable(struct ov5645
*ov5645
)
533 ret
= regulator_enable(ov5645
->io_regulator
);
535 dev_err(ov5645
->dev
, "set io voltage failed\n");
539 ret
= regulator_enable(ov5645
->analog_regulator
);
541 dev_err(ov5645
->dev
, "set analog voltage failed\n");
545 ret
= regulator_enable(ov5645
->core_regulator
);
547 dev_err(ov5645
->dev
, "set core voltage failed\n");
548 goto err_disable_analog
;
554 regulator_disable(ov5645
->analog_regulator
);
556 regulator_disable(ov5645
->io_regulator
);
561 static void ov5645_regulators_disable(struct ov5645
*ov5645
)
565 ret
= regulator_disable(ov5645
->core_regulator
);
567 dev_err(ov5645
->dev
, "core regulator disable failed\n");
569 ret
= regulator_disable(ov5645
->analog_regulator
);
571 dev_err(ov5645
->dev
, "analog regulator disable failed\n");
573 ret
= regulator_disable(ov5645
->io_regulator
);
575 dev_err(ov5645
->dev
, "io regulator disable failed\n");
578 static int ov5645_write_reg(struct ov5645
*ov5645
, u16 reg
, u8 val
)
583 regbuf
[0] = reg
>> 8;
584 regbuf
[1] = reg
& 0xff;
587 ret
= i2c_master_send(ov5645
->i2c_client
, regbuf
, 3);
589 dev_err(ov5645
->dev
, "%s: write reg error %d: reg=%x, val=%x\n",
590 __func__
, ret
, reg
, val
);
595 static int ov5645_read_reg(struct ov5645
*ov5645
, u16 reg
, u8
*val
)
600 regbuf
[0] = reg
>> 8;
601 regbuf
[1] = reg
& 0xff;
603 ret
= i2c_master_send(ov5645
->i2c_client
, regbuf
, 2);
605 dev_err(ov5645
->dev
, "%s: write reg error %d: reg=%x\n",
610 ret
= i2c_master_recv(ov5645
->i2c_client
, val
, 1);
612 dev_err(ov5645
->dev
, "%s: read reg error %d: reg=%x\n",
620 static int ov5645_set_aec_mode(struct ov5645
*ov5645
, u32 mode
)
622 u8 val
= ov5645
->aec_pk_manual
;
625 if (mode
== V4L2_EXPOSURE_AUTO
)
626 val
&= ~OV5645_AEC_MANUAL_ENABLE
;
627 else /* V4L2_EXPOSURE_MANUAL */
628 val
|= OV5645_AEC_MANUAL_ENABLE
;
630 ret
= ov5645_write_reg(ov5645
, OV5645_AEC_PK_MANUAL
, val
);
632 ov5645
->aec_pk_manual
= val
;
637 static int ov5645_set_agc_mode(struct ov5645
*ov5645
, u32 enable
)
639 u8 val
= ov5645
->aec_pk_manual
;
643 val
&= ~OV5645_AGC_MANUAL_ENABLE
;
645 val
|= OV5645_AGC_MANUAL_ENABLE
;
647 ret
= ov5645_write_reg(ov5645
, OV5645_AEC_PK_MANUAL
, val
);
649 ov5645
->aec_pk_manual
= val
;
654 static int ov5645_set_register_array(struct ov5645
*ov5645
,
655 const struct reg_value
*settings
,
656 unsigned int num_settings
)
661 for (i
= 0; i
< num_settings
; ++i
, ++settings
) {
662 ret
= ov5645_write_reg(ov5645
, settings
->reg
, settings
->val
);
670 static int ov5645_set_power_on(struct ov5645
*ov5645
)
674 ret
= ov5645_regulators_enable(ov5645
);
679 ret
= clk_prepare_enable(ov5645
->xclk
);
681 dev_err(ov5645
->dev
, "clk prepare enable failed\n");
682 ov5645_regulators_disable(ov5645
);
686 usleep_range(5000, 15000);
687 gpiod_set_value_cansleep(ov5645
->enable_gpio
, 1);
689 usleep_range(1000, 2000);
690 gpiod_set_value_cansleep(ov5645
->rst_gpio
, 0);
697 static void ov5645_set_power_off(struct ov5645
*ov5645
)
699 gpiod_set_value_cansleep(ov5645
->rst_gpio
, 1);
700 gpiod_set_value_cansleep(ov5645
->enable_gpio
, 0);
701 clk_disable_unprepare(ov5645
->xclk
);
702 ov5645_regulators_disable(ov5645
);
705 static int ov5645_s_power(struct v4l2_subdev
*sd
, int on
)
707 struct ov5645
*ov5645
= to_ov5645(sd
);
710 mutex_lock(&ov5645
->power_lock
);
712 /* If the power count is modified from 0 to != 0 or from != 0 to 0,
713 * update the power state.
715 if (ov5645
->power_count
== !on
) {
717 ret
= ov5645_set_power_on(ov5645
);
721 ret
= ov5645_set_register_array(ov5645
,
722 ov5645_global_init_setting
,
723 ARRAY_SIZE(ov5645_global_init_setting
));
726 "could not set init registers\n");
727 ov5645_set_power_off(ov5645
);
731 ret
= ov5645_write_reg(ov5645
, OV5645_SYSTEM_CTRL0
,
732 OV5645_SYSTEM_CTRL0_STOP
);
734 ov5645_set_power_off(ov5645
);
738 ov5645_set_power_off(ov5645
);
742 /* Update the power count. */
743 ov5645
->power_count
+= on
? 1 : -1;
744 WARN_ON(ov5645
->power_count
< 0);
747 mutex_unlock(&ov5645
->power_lock
);
752 static int ov5645_set_saturation(struct ov5645
*ov5645
, s32 value
)
754 u32 reg_value
= (value
* 0x10) + 0x40;
757 ret
= ov5645_write_reg(ov5645
, OV5645_SDE_SAT_U
, reg_value
);
761 return ov5645_write_reg(ov5645
, OV5645_SDE_SAT_V
, reg_value
);
764 static int ov5645_set_hflip(struct ov5645
*ov5645
, s32 value
)
766 u8 val
= ov5645
->timing_tc_reg21
;
770 val
&= ~(OV5645_SENSOR_MIRROR
);
772 val
|= (OV5645_SENSOR_MIRROR
);
774 ret
= ov5645_write_reg(ov5645
, OV5645_TIMING_TC_REG21
, val
);
776 ov5645
->timing_tc_reg21
= val
;
781 static int ov5645_set_vflip(struct ov5645
*ov5645
, s32 value
)
783 u8 val
= ov5645
->timing_tc_reg20
;
787 val
|= (OV5645_SENSOR_VFLIP
| OV5645_ISP_VFLIP
);
789 val
&= ~(OV5645_SENSOR_VFLIP
| OV5645_ISP_VFLIP
);
791 ret
= ov5645_write_reg(ov5645
, OV5645_TIMING_TC_REG20
, val
);
793 ov5645
->timing_tc_reg20
= val
;
798 static int ov5645_set_test_pattern(struct ov5645
*ov5645
, s32 value
)
803 val
= OV5645_SET_TEST_PATTERN(value
- 1);
804 val
|= OV5645_TEST_PATTERN_ENABLE
;
807 return ov5645_write_reg(ov5645
, OV5645_PRE_ISP_TEST_SETTING_1
, val
);
810 static const char * const ov5645_test_pattern_menu
[] = {
812 "Vertical Color Bars",
813 "Pseudo-Random Data",
818 static int ov5645_set_awb(struct ov5645
*ov5645
, s32 enable_auto
)
823 val
= OV5645_AWB_MANUAL_ENABLE
;
825 return ov5645_write_reg(ov5645
, OV5645_AWB_MANUAL_CONTROL
, val
);
828 static int ov5645_s_ctrl(struct v4l2_ctrl
*ctrl
)
830 struct ov5645
*ov5645
= container_of(ctrl
->handler
,
831 struct ov5645
, ctrls
);
834 mutex_lock(&ov5645
->power_lock
);
835 if (!ov5645
->power_count
) {
836 mutex_unlock(&ov5645
->power_lock
);
841 case V4L2_CID_SATURATION
:
842 ret
= ov5645_set_saturation(ov5645
, ctrl
->val
);
844 case V4L2_CID_AUTO_WHITE_BALANCE
:
845 ret
= ov5645_set_awb(ov5645
, ctrl
->val
);
847 case V4L2_CID_AUTOGAIN
:
848 ret
= ov5645_set_agc_mode(ov5645
, ctrl
->val
);
850 case V4L2_CID_EXPOSURE_AUTO
:
851 ret
= ov5645_set_aec_mode(ov5645
, ctrl
->val
);
853 case V4L2_CID_TEST_PATTERN
:
854 ret
= ov5645_set_test_pattern(ov5645
, ctrl
->val
);
857 ret
= ov5645_set_hflip(ov5645
, ctrl
->val
);
860 ret
= ov5645_set_vflip(ov5645
, ctrl
->val
);
867 mutex_unlock(&ov5645
->power_lock
);
872 static struct v4l2_ctrl_ops ov5645_ctrl_ops
= {
873 .s_ctrl
= ov5645_s_ctrl
,
876 static int ov5645_enum_mbus_code(struct v4l2_subdev
*sd
,
877 struct v4l2_subdev_pad_config
*cfg
,
878 struct v4l2_subdev_mbus_code_enum
*code
)
883 code
->code
= MEDIA_BUS_FMT_UYVY8_2X8
;
888 static int ov5645_enum_frame_size(struct v4l2_subdev
*subdev
,
889 struct v4l2_subdev_pad_config
*cfg
,
890 struct v4l2_subdev_frame_size_enum
*fse
)
892 if (fse
->code
!= MEDIA_BUS_FMT_UYVY8_2X8
)
895 if (fse
->index
>= ARRAY_SIZE(ov5645_mode_info_data
))
898 fse
->min_width
= ov5645_mode_info_data
[fse
->index
].width
;
899 fse
->max_width
= ov5645_mode_info_data
[fse
->index
].width
;
900 fse
->min_height
= ov5645_mode_info_data
[fse
->index
].height
;
901 fse
->max_height
= ov5645_mode_info_data
[fse
->index
].height
;
906 static struct v4l2_mbus_framefmt
*
907 __ov5645_get_pad_format(struct ov5645
*ov5645
,
908 struct v4l2_subdev_pad_config
*cfg
,
910 enum v4l2_subdev_format_whence which
)
913 case V4L2_SUBDEV_FORMAT_TRY
:
914 return v4l2_subdev_get_try_format(&ov5645
->sd
, cfg
, pad
);
915 case V4L2_SUBDEV_FORMAT_ACTIVE
:
922 static int ov5645_get_format(struct v4l2_subdev
*sd
,
923 struct v4l2_subdev_pad_config
*cfg
,
924 struct v4l2_subdev_format
*format
)
926 struct ov5645
*ov5645
= to_ov5645(sd
);
928 format
->format
= *__ov5645_get_pad_format(ov5645
, cfg
, format
->pad
,
933 static struct v4l2_rect
*
934 __ov5645_get_pad_crop(struct ov5645
*ov5645
, struct v4l2_subdev_pad_config
*cfg
,
935 unsigned int pad
, enum v4l2_subdev_format_whence which
)
938 case V4L2_SUBDEV_FORMAT_TRY
:
939 return v4l2_subdev_get_try_crop(&ov5645
->sd
, cfg
, pad
);
940 case V4L2_SUBDEV_FORMAT_ACTIVE
:
941 return &ov5645
->crop
;
947 static const struct ov5645_mode_info
*
948 ov5645_find_nearest_mode(unsigned int width
, unsigned int height
)
952 for (i
= ARRAY_SIZE(ov5645_mode_info_data
) - 1; i
>= 0; i
--) {
953 if (ov5645_mode_info_data
[i
].width
<= width
&&
954 ov5645_mode_info_data
[i
].height
<= height
)
961 return &ov5645_mode_info_data
[i
];
964 static int ov5645_set_format(struct v4l2_subdev
*sd
,
965 struct v4l2_subdev_pad_config
*cfg
,
966 struct v4l2_subdev_format
*format
)
968 struct ov5645
*ov5645
= to_ov5645(sd
);
969 struct v4l2_mbus_framefmt
*__format
;
970 struct v4l2_rect
*__crop
;
971 const struct ov5645_mode_info
*new_mode
;
973 __crop
= __ov5645_get_pad_crop(ov5645
, cfg
, format
->pad
,
976 new_mode
= ov5645_find_nearest_mode(format
->format
.width
,
977 format
->format
.height
);
978 __crop
->width
= new_mode
->width
;
979 __crop
->height
= new_mode
->height
;
981 if (format
->which
== V4L2_SUBDEV_FORMAT_ACTIVE
)
982 ov5645
->current_mode
= new_mode
;
984 __format
= __ov5645_get_pad_format(ov5645
, cfg
, format
->pad
,
986 __format
->width
= __crop
->width
;
987 __format
->height
= __crop
->height
;
988 __format
->code
= MEDIA_BUS_FMT_UYVY8_2X8
;
989 __format
->field
= V4L2_FIELD_NONE
;
990 __format
->colorspace
= V4L2_COLORSPACE_SRGB
;
992 format
->format
= *__format
;
997 static int ov5645_entity_init_cfg(struct v4l2_subdev
*subdev
,
998 struct v4l2_subdev_pad_config
*cfg
)
1000 struct v4l2_subdev_format fmt
= { 0 };
1002 fmt
.which
= cfg
? V4L2_SUBDEV_FORMAT_TRY
: V4L2_SUBDEV_FORMAT_ACTIVE
;
1003 fmt
.format
.width
= 1920;
1004 fmt
.format
.height
= 1080;
1006 ov5645_set_format(subdev
, cfg
, &fmt
);
1011 static int ov5645_get_selection(struct v4l2_subdev
*sd
,
1012 struct v4l2_subdev_pad_config
*cfg
,
1013 struct v4l2_subdev_selection
*sel
)
1015 struct ov5645
*ov5645
= to_ov5645(sd
);
1017 if (sel
->target
!= V4L2_SEL_TGT_CROP
)
1020 sel
->r
= *__ov5645_get_pad_crop(ov5645
, cfg
, sel
->pad
,
1025 static int ov5645_s_stream(struct v4l2_subdev
*subdev
, int enable
)
1027 struct ov5645
*ov5645
= to_ov5645(subdev
);
1031 ret
= ov5645_set_register_array(ov5645
,
1032 ov5645
->current_mode
->data
,
1033 ov5645
->current_mode
->data_size
);
1035 dev_err(ov5645
->dev
, "could not set mode %dx%d\n",
1036 ov5645
->current_mode
->width
,
1037 ov5645
->current_mode
->height
);
1040 ret
= v4l2_ctrl_handler_setup(&ov5645
->ctrls
);
1042 dev_err(ov5645
->dev
, "could not sync v4l2 controls\n");
1045 ret
= ov5645_write_reg(ov5645
, OV5645_SYSTEM_CTRL0
,
1046 OV5645_SYSTEM_CTRL0_START
);
1050 ret
= ov5645_write_reg(ov5645
, OV5645_SYSTEM_CTRL0
,
1051 OV5645_SYSTEM_CTRL0_STOP
);
1059 static const struct v4l2_subdev_core_ops ov5645_core_ops
= {
1060 .s_power
= ov5645_s_power
,
1063 static const struct v4l2_subdev_video_ops ov5645_video_ops
= {
1064 .s_stream
= ov5645_s_stream
,
1067 static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops
= {
1068 .init_cfg
= ov5645_entity_init_cfg
,
1069 .enum_mbus_code
= ov5645_enum_mbus_code
,
1070 .enum_frame_size
= ov5645_enum_frame_size
,
1071 .get_fmt
= ov5645_get_format
,
1072 .set_fmt
= ov5645_set_format
,
1073 .get_selection
= ov5645_get_selection
,
1076 static const struct v4l2_subdev_ops ov5645_subdev_ops
= {
1077 .core
= &ov5645_core_ops
,
1078 .video
= &ov5645_video_ops
,
1079 .pad
= &ov5645_subdev_pad_ops
,
1082 static int ov5645_probe(struct i2c_client
*client
,
1083 const struct i2c_device_id
*id
)
1085 struct device
*dev
= &client
->dev
;
1086 struct device_node
*endpoint
;
1087 struct ov5645
*ov5645
;
1088 u8 chip_id_high
, chip_id_low
;
1092 ov5645
= devm_kzalloc(dev
, sizeof(struct ov5645
), GFP_KERNEL
);
1096 ov5645
->i2c_client
= client
;
1099 endpoint
= of_graph_get_next_endpoint(dev
->of_node
, NULL
);
1101 dev_err(dev
, "endpoint node not found\n");
1105 ret
= v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint
),
1108 dev_err(dev
, "parsing endpoint node failed\n");
1112 of_node_put(endpoint
);
1114 if (ov5645
->ep
.bus_type
!= V4L2_MBUS_CSI2
) {
1115 dev_err(dev
, "invalid bus type, must be CSI2\n");
1119 /* get system clock (xclk) */
1120 ov5645
->xclk
= devm_clk_get(dev
, "xclk");
1121 if (IS_ERR(ov5645
->xclk
)) {
1122 dev_err(dev
, "could not get xclk");
1123 return PTR_ERR(ov5645
->xclk
);
1126 ret
= of_property_read_u32(dev
->of_node
, "clock-frequency", &xclk_freq
);
1128 dev_err(dev
, "could not get xclk frequency\n");
1132 if (xclk_freq
!= 23880000) {
1133 dev_err(dev
, "external clock frequency %u is not supported\n",
1138 ret
= clk_set_rate(ov5645
->xclk
, xclk_freq
);
1140 dev_err(dev
, "could not set xclk frequency\n");
1144 ov5645
->io_regulator
= devm_regulator_get(dev
, "vdddo");
1145 if (IS_ERR(ov5645
->io_regulator
)) {
1146 dev_err(dev
, "cannot get io regulator\n");
1147 return PTR_ERR(ov5645
->io_regulator
);
1150 ret
= regulator_set_voltage(ov5645
->io_regulator
,
1151 OV5645_VOLTAGE_DIGITAL_IO
,
1152 OV5645_VOLTAGE_DIGITAL_IO
);
1154 dev_err(dev
, "cannot set io voltage\n");
1158 ov5645
->core_regulator
= devm_regulator_get(dev
, "vddd");
1159 if (IS_ERR(ov5645
->core_regulator
)) {
1160 dev_err(dev
, "cannot get core regulator\n");
1161 return PTR_ERR(ov5645
->core_regulator
);
1164 ret
= regulator_set_voltage(ov5645
->core_regulator
,
1165 OV5645_VOLTAGE_DIGITAL_CORE
,
1166 OV5645_VOLTAGE_DIGITAL_CORE
);
1168 dev_err(dev
, "cannot set core voltage\n");
1172 ov5645
->analog_regulator
= devm_regulator_get(dev
, "vdda");
1173 if (IS_ERR(ov5645
->analog_regulator
)) {
1174 dev_err(dev
, "cannot get analog regulator\n");
1175 return PTR_ERR(ov5645
->analog_regulator
);
1178 ret
= regulator_set_voltage(ov5645
->analog_regulator
,
1179 OV5645_VOLTAGE_ANALOG
,
1180 OV5645_VOLTAGE_ANALOG
);
1182 dev_err(dev
, "cannot set analog voltage\n");
1186 ov5645
->enable_gpio
= devm_gpiod_get(dev
, "enable", GPIOD_OUT_HIGH
);
1187 if (IS_ERR(ov5645
->enable_gpio
)) {
1188 dev_err(dev
, "cannot get enable gpio\n");
1189 return PTR_ERR(ov5645
->enable_gpio
);
1192 ov5645
->rst_gpio
= devm_gpiod_get(dev
, "reset", GPIOD_OUT_HIGH
);
1193 if (IS_ERR(ov5645
->rst_gpio
)) {
1194 dev_err(dev
, "cannot get reset gpio\n");
1195 return PTR_ERR(ov5645
->rst_gpio
);
1198 mutex_init(&ov5645
->power_lock
);
1200 v4l2_ctrl_handler_init(&ov5645
->ctrls
, 7);
1201 v4l2_ctrl_new_std(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1202 V4L2_CID_SATURATION
, -4, 4, 1, 0);
1203 v4l2_ctrl_new_std(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1204 V4L2_CID_HFLIP
, 0, 1, 1, 0);
1205 v4l2_ctrl_new_std(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1206 V4L2_CID_VFLIP
, 0, 1, 1, 0);
1207 v4l2_ctrl_new_std(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1208 V4L2_CID_AUTOGAIN
, 0, 1, 1, 1);
1209 v4l2_ctrl_new_std(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1210 V4L2_CID_AUTO_WHITE_BALANCE
, 0, 1, 1, 1);
1211 v4l2_ctrl_new_std_menu(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1212 V4L2_CID_EXPOSURE_AUTO
, V4L2_EXPOSURE_MANUAL
,
1213 0, V4L2_EXPOSURE_AUTO
);
1214 v4l2_ctrl_new_std_menu_items(&ov5645
->ctrls
, &ov5645_ctrl_ops
,
1215 V4L2_CID_TEST_PATTERN
,
1216 ARRAY_SIZE(ov5645_test_pattern_menu
) - 1,
1217 0, 0, ov5645_test_pattern_menu
);
1219 ov5645
->sd
.ctrl_handler
= &ov5645
->ctrls
;
1221 if (ov5645
->ctrls
.error
) {
1222 dev_err(dev
, "%s: control initialization error %d\n",
1223 __func__
, ov5645
->ctrls
.error
);
1224 ret
= ov5645
->ctrls
.error
;
1228 v4l2_i2c_subdev_init(&ov5645
->sd
, client
, &ov5645_subdev_ops
);
1229 ov5645
->sd
.flags
|= V4L2_SUBDEV_FL_HAS_DEVNODE
;
1230 ov5645
->pad
.flags
= MEDIA_PAD_FL_SOURCE
;
1231 ov5645
->sd
.dev
= &client
->dev
;
1233 ret
= media_entity_pads_init(&ov5645
->sd
.entity
, 1, &ov5645
->pad
);
1235 dev_err(dev
, "could not register media entity\n");
1239 ret
= ov5645_s_power(&ov5645
->sd
, true);
1241 dev_err(dev
, "could not power up OV5645\n");
1245 ret
= ov5645_read_reg(ov5645
, OV5645_CHIP_ID_HIGH
, &chip_id_high
);
1246 if (ret
< 0 || chip_id_high
!= OV5645_CHIP_ID_HIGH_BYTE
) {
1247 dev_err(dev
, "could not read ID high\n");
1251 ret
= ov5645_read_reg(ov5645
, OV5645_CHIP_ID_LOW
, &chip_id_low
);
1252 if (ret
< 0 || chip_id_low
!= OV5645_CHIP_ID_LOW_BYTE
) {
1253 dev_err(dev
, "could not read ID low\n");
1258 dev_info(dev
, "OV5645 detected at address 0x%02x\n", client
->addr
);
1260 ret
= ov5645_read_reg(ov5645
, OV5645_AEC_PK_MANUAL
,
1261 &ov5645
->aec_pk_manual
);
1263 dev_err(dev
, "could not read AEC/AGC mode\n");
1268 ret
= ov5645_read_reg(ov5645
, OV5645_TIMING_TC_REG20
,
1269 &ov5645
->timing_tc_reg20
);
1271 dev_err(dev
, "could not read vflip value\n");
1276 ret
= ov5645_read_reg(ov5645
, OV5645_TIMING_TC_REG21
,
1277 &ov5645
->timing_tc_reg21
);
1279 dev_err(dev
, "could not read hflip value\n");
1284 ov5645_s_power(&ov5645
->sd
, false);
1286 ret
= v4l2_async_register_subdev(&ov5645
->sd
);
1288 dev_err(dev
, "could not register v4l2 device\n");
1292 ov5645_entity_init_cfg(&ov5645
->sd
, NULL
);
1297 ov5645_s_power(&ov5645
->sd
, false);
1299 media_entity_cleanup(&ov5645
->sd
.entity
);
1301 v4l2_ctrl_handler_free(&ov5645
->ctrls
);
1302 mutex_destroy(&ov5645
->power_lock
);
1307 static int ov5645_remove(struct i2c_client
*client
)
1309 struct v4l2_subdev
*sd
= i2c_get_clientdata(client
);
1310 struct ov5645
*ov5645
= to_ov5645(sd
);
1312 v4l2_async_unregister_subdev(&ov5645
->sd
);
1313 media_entity_cleanup(&ov5645
->sd
.entity
);
1314 v4l2_ctrl_handler_free(&ov5645
->ctrls
);
1315 mutex_destroy(&ov5645
->power_lock
);
1320 static const struct i2c_device_id ov5645_id
[] = {
1324 MODULE_DEVICE_TABLE(i2c
, ov5645_id
);
1326 static const struct of_device_id ov5645_of_match
[] = {
1327 { .compatible
= "ovti,ov5645" },
1330 MODULE_DEVICE_TABLE(of
, ov5645_of_match
);
1332 static struct i2c_driver ov5645_i2c_driver
= {
1334 .of_match_table
= of_match_ptr(ov5645_of_match
),
1337 .probe
= ov5645_probe
,
1338 .remove
= ov5645_remove
,
1339 .id_table
= ov5645_id
,
1342 module_i2c_driver(ov5645_i2c_driver
);
1344 MODULE_DESCRIPTION("Omnivision OV5645 Camera Driver");
1345 MODULE_AUTHOR("Todor Tomov <todor.tomov@linaro.org>");
1346 MODULE_LICENSE("GPL v2");