1 // SPDX-License-Identifier: GPL-2.0
3 * Omnivision OV2680 CMOS Image Sensor driver
5 * Copyright (C) 2018 Linaro Ltd
7 * Based on OV5640 Sensor Driver
8 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
9 * Copyright (C) 2014-2017 Mentor Graphics Inc.
13 #include <asm/unaligned.h>
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/err.h>
17 #include <linux/i2c.h>
18 #include <linux/init.h>
19 #include <linux/module.h>
20 #include <linux/of_device.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/regulator/consumer.h>
24 #include <media/v4l2-common.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-subdev.h>
28 #define OV2680_XVCLK_VALUE 24000000
30 #define OV2680_CHIP_ID 0x2680
32 #define OV2680_REG_STREAM_CTRL 0x0100
33 #define OV2680_REG_SOFT_RESET 0x0103
35 #define OV2680_REG_CHIP_ID_HIGH 0x300a
36 #define OV2680_REG_CHIP_ID_LOW 0x300b
38 #define OV2680_REG_R_MANUAL 0x3503
39 #define OV2680_REG_GAIN_PK 0x350a
40 #define OV2680_REG_EXPOSURE_PK_HIGH 0x3500
41 #define OV2680_REG_TIMING_HTS 0x380c
42 #define OV2680_REG_TIMING_VTS 0x380e
43 #define OV2680_REG_FORMAT1 0x3820
44 #define OV2680_REG_FORMAT2 0x3821
46 #define OV2680_REG_ISP_CTRL00 0x5080
48 #define OV2680_FRAME_RATE 30
50 #define OV2680_REG_VALUE_8BIT 1
51 #define OV2680_REG_VALUE_16BIT 2
52 #define OV2680_REG_VALUE_24BIT 3
54 #define OV2680_WIDTH_MAX 1600
55 #define OV2680_HEIGHT_MAX 1200
58 OV2680_MODE_QUXGA_800_600,
59 OV2680_MODE_720P_1280_720,
60 OV2680_MODE_UXGA_1600_1200,
69 static const char * const ov2680_supply_name[] = {
75 #define OV2680_NUM_SUPPLIES ARRAY_SIZE(ov2680_supply_name)
77 struct ov2680_mode_info {
79 enum ov2680_mode_id id;
82 const struct reg_value *reg_data;
87 struct v4l2_ctrl_handler handler;
89 struct v4l2_ctrl *auto_exp;
90 struct v4l2_ctrl *exposure;
93 struct v4l2_ctrl *auto_gain;
94 struct v4l2_ctrl *gain;
97 struct v4l2_ctrl *hflip;
98 struct v4l2_ctrl *vflip;
99 struct v4l2_ctrl *test_pattern;
103 struct i2c_client *i2c_client;
104 struct v4l2_subdev sd;
106 struct media_pad pad;
109 struct regulator_bulk_data supplies[OV2680_NUM_SUPPLIES];
111 struct gpio_desc *reset_gpio;
112 struct mutex lock; /* protect members */
114 bool mode_pending_changes;
118 struct ov2680_ctrls ctrls;
119 struct v4l2_mbus_framefmt fmt;
120 struct v4l2_fract frame_interval;
122 const struct ov2680_mode_info *current_mode;
125 static const char * const test_pattern_menu[] = {
133 static const int ov2680_hv_flip_bayer_order[] = {
134 MEDIA_BUS_FMT_SBGGR10_1X10,
135 MEDIA_BUS_FMT_SGRBG10_1X10,
136 MEDIA_BUS_FMT_SGBRG10_1X10,
137 MEDIA_BUS_FMT_SRGGB10_1X10,
140 static const struct reg_value ov2680_setting_30fps_QUXGA_800_600[] = {
141 {0x3086, 0x01}, {0x370a, 0x23}, {0x3808, 0x03}, {0x3809, 0x20},
142 {0x380a, 0x02}, {0x380b, 0x58}, {0x380c, 0x06}, {0x380d, 0xac},
143 {0x380e, 0x02}, {0x380f, 0x84}, {0x3811, 0x04}, {0x3813, 0x04},
144 {0x3814, 0x31}, {0x3815, 0x31}, {0x3820, 0xc0}, {0x4008, 0x00},
145 {0x4009, 0x03}, {0x4837, 0x1e}, {0x3501, 0x4e}, {0x3502, 0xe0},
148 static const struct reg_value ov2680_setting_30fps_720P_1280_720[] = {
149 {0x3086, 0x00}, {0x3808, 0x05}, {0x3809, 0x00}, {0x380a, 0x02},
150 {0x380b, 0xd0}, {0x380c, 0x06}, {0x380d, 0xa8}, {0x380e, 0x05},
151 {0x380f, 0x0e}, {0x3811, 0x08}, {0x3813, 0x06}, {0x3814, 0x11},
152 {0x3815, 0x11}, {0x3820, 0xc0}, {0x4008, 0x00},
155 static const struct reg_value ov2680_setting_30fps_UXGA_1600_1200[] = {
156 {0x3086, 0x00}, {0x3501, 0x4e}, {0x3502, 0xe0}, {0x3808, 0x06},
157 {0x3809, 0x40}, {0x380a, 0x04}, {0x380b, 0xb0}, {0x380c, 0x06},
158 {0x380d, 0xa8}, {0x380e, 0x05}, {0x380f, 0x0e}, {0x3811, 0x00},
159 {0x3813, 0x00}, {0x3814, 0x11}, {0x3815, 0x11}, {0x3820, 0xc0},
160 {0x4008, 0x00}, {0x4837, 0x18}
163 static const struct ov2680_mode_info ov2680_mode_init_data = {
164 "mode_quxga_800_600", OV2680_MODE_QUXGA_800_600, 800, 600,
165 ov2680_setting_30fps_QUXGA_800_600,
166 ARRAY_SIZE(ov2680_setting_30fps_QUXGA_800_600),
169 static const struct ov2680_mode_info ov2680_mode_data[OV2680_MODE_MAX] = {
170 {"mode_quxga_800_600", OV2680_MODE_QUXGA_800_600,
171 800, 600, ov2680_setting_30fps_QUXGA_800_600,
172 ARRAY_SIZE(ov2680_setting_30fps_QUXGA_800_600)},
173 {"mode_720p_1280_720", OV2680_MODE_720P_1280_720,
174 1280, 720, ov2680_setting_30fps_720P_1280_720,
175 ARRAY_SIZE(ov2680_setting_30fps_720P_1280_720)},
176 {"mode_uxga_1600_1200", OV2680_MODE_UXGA_1600_1200,
177 1600, 1200, ov2680_setting_30fps_UXGA_1600_1200,
178 ARRAY_SIZE(ov2680_setting_30fps_UXGA_1600_1200)},
181 static struct ov2680_dev *to_ov2680_dev(struct v4l2_subdev *sd)
183 return container_of(sd, struct ov2680_dev, sd);
186 static struct device *ov2680_to_dev(struct ov2680_dev *sensor)
188 return &sensor->i2c_client->dev;
191 static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
193 return &container_of(ctrl->handler, struct ov2680_dev,
197 static int __ov2680_write_reg(struct ov2680_dev *sensor, u16 reg,
198 unsigned int len, u32 val)
200 struct i2c_client *client = sensor->i2c_client;
207 put_unaligned_be16(reg, buf);
208 put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
209 ret = i2c_master_send(client, buf, len + 2);
210 if (ret != len + 2) {
211 dev_err(&client->dev, "write error: reg=0x%4x: %d\n", reg, ret);
218 #define ov2680_write_reg(s, r, v) \
219 __ov2680_write_reg(s, r, OV2680_REG_VALUE_8BIT, v)
221 #define ov2680_write_reg16(s, r, v) \
222 __ov2680_write_reg(s, r, OV2680_REG_VALUE_16BIT, v)
224 #define ov2680_write_reg24(s, r, v) \
225 __ov2680_write_reg(s, r, OV2680_REG_VALUE_24BIT, v)
227 static int __ov2680_read_reg(struct ov2680_dev *sensor, u16 reg,
228 unsigned int len, u32 *val)
230 struct i2c_client *client = sensor->i2c_client;
231 struct i2c_msg msgs[2];
232 u8 addr_buf[2] = { reg >> 8, reg & 0xff };
233 u8 data_buf[4] = { 0, };
239 msgs[0].addr = client->addr;
241 msgs[0].len = ARRAY_SIZE(addr_buf);
242 msgs[0].buf = addr_buf;
244 msgs[1].addr = client->addr;
245 msgs[1].flags = I2C_M_RD;
247 msgs[1].buf = &data_buf[4 - len];
249 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
250 if (ret != ARRAY_SIZE(msgs)) {
251 dev_err(&client->dev, "read error: reg=0x%4x: %d\n", reg, ret);
255 *val = get_unaligned_be32(data_buf);
260 #define ov2680_read_reg(s, r, v) \
261 __ov2680_read_reg(s, r, OV2680_REG_VALUE_8BIT, v)
263 #define ov2680_read_reg16(s, r, v) \
264 __ov2680_read_reg(s, r, OV2680_REG_VALUE_16BIT, v)
266 #define ov2680_read_reg24(s, r, v) \
267 __ov2680_read_reg(s, r, OV2680_REG_VALUE_24BIT, v)
269 static int ov2680_mod_reg(struct ov2680_dev *sensor, u16 reg, u8 mask, u8 val)
274 ret = ov2680_read_reg(sensor, reg, &readval);
282 return ov2680_write_reg(sensor, reg, val);
285 static int ov2680_load_regs(struct ov2680_dev *sensor,
286 const struct ov2680_mode_info *mode)
288 const struct reg_value *regs = mode->reg_data;
294 for (i = 0; i < mode->reg_data_size; ++i, ++regs) {
295 reg_addr = regs->reg_addr;
298 ret = ov2680_write_reg(sensor, reg_addr, val);
306 static void ov2680_power_up(struct ov2680_dev *sensor)
308 if (!sensor->reset_gpio)
311 gpiod_set_value(sensor->reset_gpio, 0);
312 usleep_range(5000, 10000);
315 static void ov2680_power_down(struct ov2680_dev *sensor)
317 if (!sensor->reset_gpio)
320 gpiod_set_value(sensor->reset_gpio, 1);
321 usleep_range(5000, 10000);
324 static int ov2680_bayer_order(struct ov2680_dev *sensor)
331 ret = ov2680_read_reg(sensor, OV2680_REG_FORMAT1, &format1);
335 ret = ov2680_read_reg(sensor, OV2680_REG_FORMAT2, &format2);
339 hv_flip = (format2 & BIT(2) << 1) | (format1 & BIT(2));
341 sensor->fmt.code = ov2680_hv_flip_bayer_order[hv_flip];
346 static int ov2680_vflip_enable(struct ov2680_dev *sensor)
350 ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), BIT(2));
354 return ov2680_bayer_order(sensor);
357 static int ov2680_vflip_disable(struct ov2680_dev *sensor)
361 ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), BIT(0));
365 return ov2680_bayer_order(sensor);
368 static int ov2680_hflip_enable(struct ov2680_dev *sensor)
372 ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), BIT(2));
376 return ov2680_bayer_order(sensor);
379 static int ov2680_hflip_disable(struct ov2680_dev *sensor)
383 ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), BIT(0));
387 return ov2680_bayer_order(sensor);
390 static int ov2680_test_pattern_set(struct ov2680_dev *sensor, int value)
395 return ov2680_mod_reg(sensor, OV2680_REG_ISP_CTRL00, BIT(7), 0);
397 ret = ov2680_mod_reg(sensor, OV2680_REG_ISP_CTRL00, 0x03, value - 1);
401 ret = ov2680_mod_reg(sensor, OV2680_REG_ISP_CTRL00, BIT(7), BIT(7));
408 static int ov2680_gain_set(struct ov2680_dev *sensor, bool auto_gain)
410 struct ov2680_ctrls *ctrls = &sensor->ctrls;
414 ret = ov2680_mod_reg(sensor, OV2680_REG_R_MANUAL, BIT(1),
415 auto_gain ? 0 : BIT(1));
419 if (auto_gain || !ctrls->gain->is_new)
422 gain = ctrls->gain->val;
424 ret = ov2680_write_reg16(sensor, OV2680_REG_GAIN_PK, gain);
429 static int ov2680_gain_get(struct ov2680_dev *sensor)
434 ret = ov2680_read_reg16(sensor, OV2680_REG_GAIN_PK, &gain);
441 static int ov2680_exposure_set(struct ov2680_dev *sensor, bool auto_exp)
443 struct ov2680_ctrls *ctrls = &sensor->ctrls;
447 ret = ov2680_mod_reg(sensor, OV2680_REG_R_MANUAL, BIT(0),
448 auto_exp ? 0 : BIT(0));
452 if (auto_exp || !ctrls->exposure->is_new)
455 exp = (u32)ctrls->exposure->val;
458 return ov2680_write_reg24(sensor, OV2680_REG_EXPOSURE_PK_HIGH, exp);
461 static int ov2680_exposure_get(struct ov2680_dev *sensor)
466 ret = ov2680_read_reg24(sensor, OV2680_REG_EXPOSURE_PK_HIGH, &exp);
473 static int ov2680_stream_enable(struct ov2680_dev *sensor)
475 return ov2680_write_reg(sensor, OV2680_REG_STREAM_CTRL, 1);
478 static int ov2680_stream_disable(struct ov2680_dev *sensor)
480 return ov2680_write_reg(sensor, OV2680_REG_STREAM_CTRL, 0);
483 static int ov2680_mode_set(struct ov2680_dev *sensor)
485 struct ov2680_ctrls *ctrls = &sensor->ctrls;
488 ret = ov2680_gain_set(sensor, false);
492 ret = ov2680_exposure_set(sensor, false);
496 ret = ov2680_load_regs(sensor, sensor->current_mode);
500 if (ctrls->auto_gain->val) {
501 ret = ov2680_gain_set(sensor, true);
506 if (ctrls->auto_exp->val == V4L2_EXPOSURE_AUTO) {
507 ret = ov2680_exposure_set(sensor, true);
512 sensor->mode_pending_changes = false;
517 static int ov2680_mode_restore(struct ov2680_dev *sensor)
521 ret = ov2680_load_regs(sensor, &ov2680_mode_init_data);
525 return ov2680_mode_set(sensor);
528 static int ov2680_power_off(struct ov2680_dev *sensor)
530 if (!sensor->is_enabled)
533 clk_disable_unprepare(sensor->xvclk);
534 ov2680_power_down(sensor);
535 regulator_bulk_disable(OV2680_NUM_SUPPLIES, sensor->supplies);
536 sensor->is_enabled = false;
541 static int ov2680_power_on(struct ov2680_dev *sensor)
543 struct device *dev = ov2680_to_dev(sensor);
546 if (sensor->is_enabled)
549 ret = regulator_bulk_enable(OV2680_NUM_SUPPLIES, sensor->supplies);
551 dev_err(dev, "failed to enable regulators: %d\n", ret);
555 if (!sensor->reset_gpio) {
556 ret = ov2680_write_reg(sensor, OV2680_REG_SOFT_RESET, 0x01);
558 dev_err(dev, "sensor soft reset failed\n");
561 usleep_range(1000, 2000);
563 ov2680_power_down(sensor);
564 ov2680_power_up(sensor);
567 ret = clk_prepare_enable(sensor->xvclk);
571 ret = ov2680_mode_restore(sensor);
575 sensor->is_enabled = true;
577 /* Set clock lane into LP-11 state */
578 ov2680_stream_enable(sensor);
579 usleep_range(1000, 2000);
580 ov2680_stream_disable(sensor);
585 dev_err(dev, "failed to enable sensor: %d\n", ret);
586 ov2680_power_off(sensor);
591 static int ov2680_s_power(struct v4l2_subdev *sd, int on)
593 struct ov2680_dev *sensor = to_ov2680_dev(sd);
596 mutex_lock(&sensor->lock);
599 ret = ov2680_power_on(sensor);
601 ret = ov2680_power_off(sensor);
603 mutex_unlock(&sensor->lock);
605 if (on && ret == 0) {
606 ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
614 static int ov2680_s_g_frame_interval(struct v4l2_subdev *sd,
615 struct v4l2_subdev_frame_interval *fi)
617 struct ov2680_dev *sensor = to_ov2680_dev(sd);
619 mutex_lock(&sensor->lock);
620 fi->interval = sensor->frame_interval;
621 mutex_unlock(&sensor->lock);
626 static int ov2680_s_stream(struct v4l2_subdev *sd, int enable)
628 struct ov2680_dev *sensor = to_ov2680_dev(sd);
631 mutex_lock(&sensor->lock);
633 if (sensor->is_streaming == !!enable)
636 if (enable && sensor->mode_pending_changes) {
637 ret = ov2680_mode_set(sensor);
643 ret = ov2680_stream_enable(sensor);
645 ret = ov2680_stream_disable(sensor);
647 sensor->is_streaming = !!enable;
650 mutex_unlock(&sensor->lock);
655 static int ov2680_enum_mbus_code(struct v4l2_subdev *sd,
656 struct v4l2_subdev_pad_config *cfg,
657 struct v4l2_subdev_mbus_code_enum *code)
659 struct ov2680_dev *sensor = to_ov2680_dev(sd);
661 if (code->pad != 0 || code->index != 0)
664 code->code = sensor->fmt.code;
669 static int ov2680_get_fmt(struct v4l2_subdev *sd,
670 struct v4l2_subdev_pad_config *cfg,
671 struct v4l2_subdev_format *format)
673 struct ov2680_dev *sensor = to_ov2680_dev(sd);
674 struct v4l2_mbus_framefmt *fmt = NULL;
677 if (format->pad != 0)
680 mutex_lock(&sensor->lock);
682 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
683 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
684 fmt = v4l2_subdev_get_try_format(&sensor->sd, cfg, format->pad);
693 format->format = *fmt;
695 mutex_unlock(&sensor->lock);
700 static int ov2680_set_fmt(struct v4l2_subdev *sd,
701 struct v4l2_subdev_pad_config *cfg,
702 struct v4l2_subdev_format *format)
704 struct ov2680_dev *sensor = to_ov2680_dev(sd);
705 struct v4l2_mbus_framefmt *fmt = &format->format;
706 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
707 struct v4l2_mbus_framefmt *try_fmt;
709 const struct ov2680_mode_info *mode;
712 if (format->pad != 0)
715 mutex_lock(&sensor->lock);
717 if (sensor->is_streaming) {
722 mode = v4l2_find_nearest_size(ov2680_mode_data,
723 ARRAY_SIZE(ov2680_mode_data), width,
724 height, fmt->width, fmt->height);
730 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
731 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
732 try_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
733 format->format = *try_fmt;
741 fmt->width = mode->width;
742 fmt->height = mode->height;
743 fmt->code = sensor->fmt.code;
744 fmt->colorspace = sensor->fmt.colorspace;
746 sensor->current_mode = mode;
747 sensor->fmt = format->format;
748 sensor->mode_pending_changes = true;
751 mutex_unlock(&sensor->lock);
756 static int ov2680_init_cfg(struct v4l2_subdev *sd,
757 struct v4l2_subdev_pad_config *cfg)
759 struct v4l2_subdev_format fmt = {
760 .which = cfg ? V4L2_SUBDEV_FORMAT_TRY
761 : V4L2_SUBDEV_FORMAT_ACTIVE,
768 return ov2680_set_fmt(sd, cfg, &fmt);
771 static int ov2680_enum_frame_size(struct v4l2_subdev *sd,
772 struct v4l2_subdev_pad_config *cfg,
773 struct v4l2_subdev_frame_size_enum *fse)
775 int index = fse->index;
777 if (index >= OV2680_MODE_MAX || index < 0)
780 fse->min_width = ov2680_mode_data[index].width;
781 fse->min_height = ov2680_mode_data[index].height;
782 fse->max_width = ov2680_mode_data[index].width;
783 fse->max_height = ov2680_mode_data[index].height;
788 static int ov2680_enum_frame_interval(struct v4l2_subdev *sd,
789 struct v4l2_subdev_pad_config *cfg,
790 struct v4l2_subdev_frame_interval_enum *fie)
792 struct v4l2_fract tpf;
794 if (fie->index >= OV2680_MODE_MAX || fie->width > OV2680_WIDTH_MAX ||
795 fie->height > OV2680_HEIGHT_MAX ||
796 fie->which > V4L2_SUBDEV_FORMAT_ACTIVE)
799 tpf.denominator = OV2680_FRAME_RATE;
807 static int ov2680_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
809 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
810 struct ov2680_dev *sensor = to_ov2680_dev(sd);
811 struct ov2680_ctrls *ctrls = &sensor->ctrls;
814 if (!sensor->is_enabled)
819 val = ov2680_gain_get(sensor);
822 ctrls->gain->val = val;
824 case V4L2_CID_EXPOSURE:
825 val = ov2680_exposure_get(sensor);
828 ctrls->exposure->val = val;
835 static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl)
837 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
838 struct ov2680_dev *sensor = to_ov2680_dev(sd);
839 struct ov2680_ctrls *ctrls = &sensor->ctrls;
841 if (!sensor->is_enabled)
845 case V4L2_CID_AUTOGAIN:
846 return ov2680_gain_set(sensor, !!ctrl->val);
848 return ov2680_gain_set(sensor, !!ctrls->auto_gain->val);
849 case V4L2_CID_EXPOSURE_AUTO:
850 return ov2680_exposure_set(sensor, !!ctrl->val);
851 case V4L2_CID_EXPOSURE:
852 return ov2680_exposure_set(sensor, !!ctrls->auto_exp->val);
854 if (sensor->is_streaming)
857 return ov2680_vflip_enable(sensor);
859 return ov2680_vflip_disable(sensor);
861 if (sensor->is_streaming)
864 return ov2680_hflip_enable(sensor);
866 return ov2680_hflip_disable(sensor);
867 case V4L2_CID_TEST_PATTERN:
868 return ov2680_test_pattern_set(sensor, ctrl->val);
876 static const struct v4l2_ctrl_ops ov2680_ctrl_ops = {
877 .g_volatile_ctrl = ov2680_g_volatile_ctrl,
878 .s_ctrl = ov2680_s_ctrl,
881 static const struct v4l2_subdev_core_ops ov2680_core_ops = {
882 .s_power = ov2680_s_power,
885 static const struct v4l2_subdev_video_ops ov2680_video_ops = {
886 .g_frame_interval = ov2680_s_g_frame_interval,
887 .s_frame_interval = ov2680_s_g_frame_interval,
888 .s_stream = ov2680_s_stream,
891 static const struct v4l2_subdev_pad_ops ov2680_pad_ops = {
892 .init_cfg = ov2680_init_cfg,
893 .enum_mbus_code = ov2680_enum_mbus_code,
894 .get_fmt = ov2680_get_fmt,
895 .set_fmt = ov2680_set_fmt,
896 .enum_frame_size = ov2680_enum_frame_size,
897 .enum_frame_interval = ov2680_enum_frame_interval,
900 static const struct v4l2_subdev_ops ov2680_subdev_ops = {
901 .core = &ov2680_core_ops,
902 .video = &ov2680_video_ops,
903 .pad = &ov2680_pad_ops,
906 static int ov2680_mode_init(struct ov2680_dev *sensor)
908 const struct ov2680_mode_info *init_mode;
910 /* set initial mode */
911 sensor->fmt.code = MEDIA_BUS_FMT_SBGGR10_1X10;
912 sensor->fmt.width = 800;
913 sensor->fmt.height = 600;
914 sensor->fmt.field = V4L2_FIELD_NONE;
915 sensor->fmt.colorspace = V4L2_COLORSPACE_SRGB;
917 sensor->frame_interval.denominator = OV2680_FRAME_RATE;
918 sensor->frame_interval.numerator = 1;
920 init_mode = &ov2680_mode_init_data;
922 sensor->current_mode = init_mode;
924 sensor->mode_pending_changes = true;
929 static int ov2680_v4l2_init(struct ov2680_dev *sensor)
931 const struct v4l2_ctrl_ops *ops = &ov2680_ctrl_ops;
932 struct ov2680_ctrls *ctrls = &sensor->ctrls;
933 struct v4l2_ctrl_handler *hdl = &ctrls->handler;
936 v4l2_i2c_subdev_init(&sensor->sd, sensor->i2c_client,
939 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
940 sensor->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
942 sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
943 sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
945 ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
949 v4l2_ctrl_handler_init(hdl, 7);
951 hdl->lock = &sensor->lock;
953 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
954 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
956 ctrls->test_pattern = v4l2_ctrl_new_std_menu_items(hdl,
957 &ov2680_ctrl_ops, V4L2_CID_TEST_PATTERN,
958 ARRAY_SIZE(test_pattern_menu) - 1,
959 0, 0, test_pattern_menu);
961 ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
962 V4L2_CID_EXPOSURE_AUTO,
963 V4L2_EXPOSURE_MANUAL, 0,
966 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
969 ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
971 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 2047, 1, 0);
978 ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
979 ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
981 v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
982 v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
984 sensor->sd.ctrl_handler = hdl;
986 ret = v4l2_async_register_subdev(&sensor->sd);
993 media_entity_cleanup(&sensor->sd.entity);
994 v4l2_ctrl_handler_free(hdl);
999 static int ov2680_get_regulators(struct ov2680_dev *sensor)
1003 for (i = 0; i < OV2680_NUM_SUPPLIES; i++)
1004 sensor->supplies[i].supply = ov2680_supply_name[i];
1006 return devm_regulator_bulk_get(&sensor->i2c_client->dev,
1007 OV2680_NUM_SUPPLIES,
1011 static int ov2680_check_id(struct ov2680_dev *sensor)
1013 struct device *dev = ov2680_to_dev(sensor);
1017 ov2680_power_on(sensor);
1019 ret = ov2680_read_reg16(sensor, OV2680_REG_CHIP_ID_HIGH, &chip_id);
1021 dev_err(dev, "failed to read chip id high\n");
1025 if (chip_id != OV2680_CHIP_ID) {
1026 dev_err(dev, "chip id: 0x%04x does not match expected 0x%04x\n",
1027 chip_id, OV2680_CHIP_ID);
1034 static int ov2860_parse_dt(struct ov2680_dev *sensor)
1036 struct device *dev = ov2680_to_dev(sensor);
1039 sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
1041 ret = PTR_ERR_OR_ZERO(sensor->reset_gpio);
1043 dev_dbg(dev, "error while getting reset gpio: %d\n", ret);
1047 sensor->xvclk = devm_clk_get(dev, "xvclk");
1048 if (IS_ERR(sensor->xvclk)) {
1049 dev_err(dev, "xvclk clock missing or invalid\n");
1050 return PTR_ERR(sensor->xvclk);
1053 sensor->xvclk_freq = clk_get_rate(sensor->xvclk);
1054 if (sensor->xvclk_freq != OV2680_XVCLK_VALUE) {
1055 dev_err(dev, "wrong xvclk frequency %d HZ, expected: %d Hz\n",
1056 sensor->xvclk_freq, OV2680_XVCLK_VALUE);
1063 static int ov2680_probe(struct i2c_client *client)
1065 struct device *dev = &client->dev;
1066 struct ov2680_dev *sensor;
1069 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
1073 sensor->i2c_client = client;
1075 ret = ov2860_parse_dt(sensor);
1079 ret = ov2680_mode_init(sensor);
1083 ret = ov2680_get_regulators(sensor);
1085 dev_err(dev, "failed to get regulators\n");
1089 mutex_init(&sensor->lock);
1091 ret = ov2680_v4l2_init(sensor);
1095 ret = ov2680_check_id(sensor);
1099 dev_info(dev, "ov2680 init correctly\n");
1104 dev_err(dev, "ov2680 init fail: %d\n", ret);
1106 media_entity_cleanup(&sensor->sd.entity);
1107 v4l2_async_unregister_subdev(&sensor->sd);
1108 v4l2_ctrl_handler_free(&sensor->ctrls.handler);
1111 mutex_destroy(&sensor->lock);
1116 static int ov2680_remove(struct i2c_client *client)
1118 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1119 struct ov2680_dev *sensor = to_ov2680_dev(sd);
1121 v4l2_async_unregister_subdev(&sensor->sd);
1122 mutex_destroy(&sensor->lock);
1123 media_entity_cleanup(&sensor->sd.entity);
1124 v4l2_ctrl_handler_free(&sensor->ctrls.handler);
1129 static int __maybe_unused ov2680_suspend(struct device *dev)
1131 struct i2c_client *client = to_i2c_client(dev);
1132 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1133 struct ov2680_dev *sensor = to_ov2680_dev(sd);
1135 if (sensor->is_streaming)
1136 ov2680_stream_disable(sensor);
1141 static int __maybe_unused ov2680_resume(struct device *dev)
1143 struct i2c_client *client = to_i2c_client(dev);
1144 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1145 struct ov2680_dev *sensor = to_ov2680_dev(sd);
1148 if (sensor->is_streaming) {
1149 ret = ov2680_stream_enable(sensor);
1151 goto stream_disable;
1157 ov2680_stream_disable(sensor);
1158 sensor->is_streaming = false;
1163 static const struct dev_pm_ops ov2680_pm_ops = {
1164 SET_SYSTEM_SLEEP_PM_OPS(ov2680_suspend, ov2680_resume)
1167 static const struct of_device_id ov2680_dt_ids[] = {
1168 { .compatible = "ovti,ov2680" },
1171 MODULE_DEVICE_TABLE(of, ov2680_dt_ids);
1173 static struct i2c_driver ov2680_i2c_driver = {
1176 .pm = &ov2680_pm_ops,
1177 .of_match_table = of_match_ptr(ov2680_dt_ids),
1179 .probe_new = ov2680_probe,
1180 .remove = ov2680_remove,
1182 module_i2c_driver(ov2680_i2c_driver);
1184 MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
1185 MODULE_DESCRIPTION("OV2680 CMOS Image Sensor driver");
1186 MODULE_LICENSE("GPL v2");