1 // SPDX-License-Identifier: GPL-2.0
3 * A V4L2 driver for Sony IMX219 cameras.
4 * Copyright (C) 2019, Raspberry Pi (Trading) Ltd
6 * Based on Sony imx258 camera driver
7 * Copyright (C) 2018 Intel Corporation
9 * DT / fwnode changes, and regulator / GPIO control taken from imx214 driver
10 * Copyright 2018 Qtechnology A/S
12 * Flip handling taken from the Sony IMX319 driver.
13 * Copyright (C) 2018 Intel Corporation
15 * Copyright (C) 2021 StarFive Technology Co., Ltd.
18 #include <linux/clk.h>
19 #include <linux/delay.h>
20 #include <linux/gpio/consumer.h>
21 #include <linux/i2c.h>
22 #include <linux/module.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/regulator/consumer.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-device.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-fwnode.h>
29 #include <media/v4l2-mediabus.h>
30 #include <linux/pinctrl/pinctrl.h>
31 #include <asm/unaligned.h>
33 #define IMX219_REG_VALUE_08BIT 1
34 #define IMX219_REG_VALUE_16BIT 2
36 #define IMX219_REG_MODE_SELECT 0x0100
37 #define IMX219_MODE_STANDBY 0x00
38 #define IMX219_MODE_STREAMING 0x01
41 #define IMX219_REG_CHIP_ID 0x0000
42 #define IMX219_CHIP_ID 0x0219
44 /* External clock frequency is 24.0M */
45 #define IMX219_XCLK_FREQ 24000000
47 /* Pixel rate is fixed at 182.4M for all the modes */
48 #define IMX219_PIXEL_RATE 182400000
50 #define IMX219_DEFAULT_LINK_FREQ 456000000
52 /* V_TIMING internal */
53 #define IMX219_REG_VTS 0x0160
54 #define IMX219_VTS_15FPS 0x0dc6
55 #define IMX219_VTS_30FPS_1080P 0x06e3
56 #define IMX219_VTS_30FPS_BINNED 0x06e3
57 #define IMX219_VTS_30FPS_1280x720 0x06e3
58 #define IMX219_VTS_30FPS_640x480 0x06e3
59 #define IMX219_VTS_MAX 0xffff
61 #define IMX219_VBLANK_MIN 4
64 #define IMX219_FLL_MIN 0x08a6
65 #define IMX219_FLL_MAX 0xffff
66 #define IMX219_FLL_STEP 1
67 #define IMX219_FLL_DEFAULT 0x0c98
69 /* HBLANK control - read only */
70 #define IMX219_PPL_DEFAULT 3448
72 /* Exposure control */
73 #define IMX219_REG_EXPOSURE 0x015a
74 #define IMX219_EXPOSURE_MIN 4
75 #define IMX219_EXPOSURE_STEP 1
76 #define IMX219_EXPOSURE_DEFAULT 0x640
77 #define IMX219_EXPOSURE_MAX 65535
79 /* Analog gain control */
80 #define IMX219_REG_ANALOG_GAIN 0x0157
81 #define IMX219_ANA_GAIN_MIN 0
82 #define IMX219_ANA_GAIN_MAX 232
83 #define IMX219_ANA_GAIN_STEP 1
84 #define IMX219_ANA_GAIN_DEFAULT 0xd0
86 /* Digital gain control */
87 #define IMX219_REG_DIGITAL_GAIN 0x0158
88 #define IMX219_DGTL_GAIN_MIN 0x0100
89 #define IMX219_DGTL_GAIN_MAX 0x0fff
90 #define IMX219_DGTL_GAIN_DEFAULT 0x0100
91 #define IMX219_DGTL_GAIN_STEP 1
93 #define IMX219_REG_ORIENTATION 0x0172
95 /* Test Pattern Control */
96 #define IMX219_REG_TEST_PATTERN 0x0600
97 #define IMX219_TEST_PATTERN_DISABLE 0
98 #define IMX219_TEST_PATTERN_SOLID_COLOR 1
99 #define IMX219_TEST_PATTERN_COLOR_BARS 2
100 #define IMX219_TEST_PATTERN_GREY_COLOR 3
101 #define IMX219_TEST_PATTERN_PN9 4
103 /* Test pattern colour components */
104 #define IMX219_REG_TESTP_RED 0x0602
105 #define IMX219_REG_TESTP_GREENR 0x0604
106 #define IMX219_REG_TESTP_BLUE 0x0606
107 #define IMX219_REG_TESTP_GREENB 0x0608
108 #define IMX219_TESTP_COLOUR_MIN 0
109 #define IMX219_TESTP_COLOUR_MAX 0x03ff
110 #define IMX219_TESTP_COLOUR_STEP 1
111 #define IMX219_TESTP_RED_DEFAULT IMX219_TESTP_COLOUR_MAX
112 #define IMX219_TESTP_GREENR_DEFAULT 0
113 #define IMX219_TESTP_BLUE_DEFAULT 0
114 #define IMX219_TESTP_GREENB_DEFAULT 0
116 /* IMX219 native and active pixel array size. */
117 #define IMX219_NATIVE_WIDTH 3296U
118 #define IMX219_NATIVE_HEIGHT 2480U
119 #define IMX219_PIXEL_ARRAY_LEFT 8U
120 #define IMX219_PIXEL_ARRAY_TOP 8U
121 #define IMX219_PIXEL_ARRAY_WIDTH 3280U
122 #define IMX219_PIXEL_ARRAY_HEIGHT 2464U
129 struct imx219_reg_list {
130 unsigned int num_of_regs;
131 const struct imx219_reg *regs;
134 /* Mode : resolution and related config&values */
143 /* Analog crop rectangle. */
144 struct v4l2_rect crop;
147 unsigned int vts_def;
149 /* Default register values */
150 struct imx219_reg_list reg_list;
154 * Register sets lifted off the i2C interface from the Raspberry Pi firmware
156 * 3280x2464 = mode 2, 1920x1080 = mode 1, 1640x1232 = mode 4, 640x480 = mode 7.
159 static const struct imx219_reg mode_1920_1080_regs[] = {
216 static const struct imx219_reg mode_1280_720_regs[] = {
273 static const struct imx219_reg mode_640_480_regs[] = {
330 static const struct imx219_reg raw8_framefmt_regs[] = {
336 static const struct imx219_reg raw10_framefmt_regs[] = {
342 static const s64 imx219_link_freq_menu[] = {
343 IMX219_DEFAULT_LINK_FREQ,
346 static const char * const imx219_test_pattern_menu[] = {
354 static const int imx219_test_pattern_val[] = {
355 IMX219_TEST_PATTERN_DISABLE,
356 IMX219_TEST_PATTERN_COLOR_BARS,
357 IMX219_TEST_PATTERN_SOLID_COLOR,
358 IMX219_TEST_PATTERN_GREY_COLOR,
359 IMX219_TEST_PATTERN_PN9,
362 /* regulator supplies */
363 static const char * const imx219_supply_name[] = {
364 /* Supplies can be enabled in any order */
365 "VANA", /* Analog (2.8V) supply */
366 "VDIG", /* Digital Core (1.8V) supply */
367 "VDDL", /* IF (1.2V) supply */
370 #define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name)
373 * The supported formats.
374 * This table MUST contain 4 entries per format, to cover the various flip
375 * combinations in the order
381 static const u32 codes[] = {
382 MEDIA_BUS_FMT_SRGGB10_1X10,
383 MEDIA_BUS_FMT_SGRBG10_1X10,
384 MEDIA_BUS_FMT_SGBRG10_1X10,
385 MEDIA_BUS_FMT_SBGGR10_1X10,
387 MEDIA_BUS_FMT_SRGGB8_1X8,
388 MEDIA_BUS_FMT_SGRBG8_1X8,
389 MEDIA_BUS_FMT_SGBRG8_1X8,
390 MEDIA_BUS_FMT_SBGGR8_1X8,
394 * Initialisation delay between XCLR low->high and the moment when the sensor
395 * can start capture (i.e. can leave software stanby) must be not less than:
396 * t4 + max(t5, t6 + <time to initialize the sensor register over I2C>)
398 * t4 is fixed, and is max 200uS,
399 * t5 is fixed, and is 6000uS,
400 * t6 depends on the sensor external clock, and is max 32000 clock periods.
401 * As per sensor datasheet, the external clock must be from 6MHz to 27MHz.
402 * So for any acceptable external clock t6 is always within the range of
403 * 1185 to 5333 uS, and is always less than t5.
404 * For this reason this is always safe to wait (t4 + t5) = 6200 uS, then
405 * initialize the sensor over I2C, and then exit the software standby.
407 * This start-up time can be optimized a bit more, if we start the writes
408 * over I2C after (t4+t6), but before (t4+t5) expires. But then sensor
409 * initialization over I2C may complete before (t4+t5) expires, and we must
410 * ensure that capture is not started before (t4+t5).
412 * This delay doesn't account for the power supply startup time. If needed,
413 * this should be taken care of via the regulator framework. E.g. in the
414 * case of DT for regulator-fixed one should define the startup-delay-us
417 #define IMX219_XCLR_MIN_DELAY_US 6200
418 #define IMX219_XCLR_DELAY_RANGE_US 1000
421 static const struct imx219_mode supported_modes[] = {
423 /* 1080P 30fps cropped */
433 .vts_def = IMX219_VTS_30FPS_1080P,
435 .num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
436 .regs = mode_1920_1080_regs,
440 /* 1280x720 30fps mode */
450 .vts_def = IMX219_VTS_30FPS_1280x720,
452 .num_of_regs = ARRAY_SIZE(mode_1280_720_regs),
453 .regs = mode_1280_720_regs,
457 /* 640x480 30fps mode */
467 .vts_def = IMX219_VTS_30FPS_640x480,
469 .num_of_regs = ARRAY_SIZE(mode_640_480_regs),
470 .regs = mode_640_480_regs,
475 struct sensor_pinctrl_info {
476 struct pinctrl *pinctrl;
477 struct pinctrl_state *power_up;
478 struct pinctrl_state *power_down;
483 struct v4l2_subdev sd;
484 struct media_pad pad;
485 //struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */
487 struct v4l2_mbus_framefmt fmt;
489 struct clk *xclk; /* system clock to IMX219 */
492 struct gpio_desc *reset_gpio;
493 struct regulator_bulk_data supplies[IMX219_NUM_SUPPLIES];
495 struct v4l2_ctrl_handler ctrl_handler;
497 struct v4l2_ctrl *pixel_rate;
498 struct v4l2_ctrl *link_freq;
499 struct v4l2_ctrl *exposure;
500 struct v4l2_ctrl *vflip;
501 struct v4l2_ctrl *hflip;
502 struct v4l2_ctrl *vblank;
503 struct v4l2_ctrl *hblank;
506 const struct imx219_mode *mode;
507 struct v4l2_fract frame_interval;
510 * Mutex for serialized access:
511 * Protect sensor module set pad format and start/stop streaming safely.
515 /* Streaming on/off */
518 struct sensor_pinctrl_info imx219_pctrl;
521 int imx219_sensor_pinctrl_init(
522 struct sensor_pinctrl_info *sensor_pctrl, struct device *dev)
524 sensor_pctrl->pinctrl = devm_pinctrl_get(dev);
525 if (IS_ERR_OR_NULL(sensor_pctrl->pinctrl)) {
526 pr_err("Getting pinctrl handle failed\n");
530 sensor_pctrl->power_up
531 = pinctrl_lookup_state(sensor_pctrl->pinctrl, "power_up");
532 if (IS_ERR_OR_NULL(sensor_pctrl->power_up)) {
533 pr_err("Failed to get the power_up pinctrl handle\n");
537 sensor_pctrl->power_down
538 = pinctrl_lookup_state(sensor_pctrl->pinctrl, "power_down");
539 if (IS_ERR_OR_NULL(sensor_pctrl->power_down)) {
540 pr_err("Failed to get the power_down pinctrl handle\n");
544 sensor_pctrl->use_pinctrl = true;
549 static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd)
551 return container_of(_sd, struct imx219, sd);
554 /* Read registers up to 2 at a time */
555 static int imx219_read_reg(struct imx219 *imx219, u16 reg, u32 len, u32 *val)
557 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
558 struct i2c_msg msgs[2];
559 u8 addr_buf[2] = { reg >> 8, reg & 0xff };
560 u8 data_buf[4] = { 0, };
566 /* Write register address */
567 msgs[0].addr = client->addr;
569 msgs[0].len = ARRAY_SIZE(addr_buf);
570 msgs[0].buf = addr_buf;
572 /* Read data from register */
573 msgs[1].addr = client->addr;
574 msgs[1].flags = I2C_M_RD;
576 msgs[1].buf = &data_buf[4 - len];
578 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
579 if (ret != ARRAY_SIZE(msgs))
582 *val = get_unaligned_be32(data_buf);
587 /* Write registers up to 2 at a time */
588 static int imx219_write_reg(struct imx219 *imx219, u16 reg, u32 len, u32 val)
590 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
596 put_unaligned_be16(reg, buf);
597 put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
598 if (i2c_master_send(client, buf, len + 2) != len + 2)
604 /* Write a list of registers */
605 static int imx219_write_regs(struct imx219 *imx219,
606 const struct imx219_reg *regs, u32 len)
608 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
612 for (i = 0; i < len; i++) {
613 ret = imx219_write_reg(imx219, regs[i].address, 1, regs[i].val);
615 dev_err_ratelimited(&client->dev,
616 "Failed to write reg 0x%4.4x. error = %d\n",
617 regs[i].address, ret);
626 /* Get bayer order based on flip setting. */
627 static u32 imx219_get_format_code(struct imx219 *imx219, u32 code)
631 lockdep_assert_held(&imx219->mutex);
633 for (i = 0; i < ARRAY_SIZE(codes); i++)
634 if (codes[i] == code)
637 if (i >= ARRAY_SIZE(codes))
640 i = (i & ~3) | (imx219->vflip->val ? 2 : 0) |
641 (imx219->hflip->val ? 1 : 0);
646 static void imx219_set_default_format(struct imx219 *imx219)
648 struct v4l2_mbus_framefmt *fmt;
651 fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
652 fmt->colorspace = V4L2_COLORSPACE_SRGB;
653 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
654 fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
655 fmt->colorspace, fmt->ycbcr_enc);
656 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
657 fmt->width = supported_modes[0].width;
658 fmt->height = supported_modes[0].height;
659 fmt->field = V4L2_FIELD_NONE;
662 static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
664 struct imx219 *imx219 = to_imx219(sd);
665 struct v4l2_mbus_framefmt *try_fmt =
666 v4l2_subdev_get_try_format(sd, fh->state, 0);
667 struct v4l2_rect *try_crop;
669 mutex_lock(&imx219->mutex);
671 /* Initialize try_fmt */
672 try_fmt->width = supported_modes[0].width;
673 try_fmt->height = supported_modes[0].height;
674 try_fmt->code = imx219_get_format_code(imx219, MEDIA_BUS_FMT_SRGGB10_1X10);
675 try_fmt->field = V4L2_FIELD_NONE;
677 /* Initialize try_crop rectangle. */
678 try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
679 try_crop->top = IMX219_PIXEL_ARRAY_TOP;
680 try_crop->left = IMX219_PIXEL_ARRAY_LEFT;
681 try_crop->width = IMX219_PIXEL_ARRAY_WIDTH;
682 try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
684 mutex_unlock(&imx219->mutex);
689 static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
691 struct imx219 *imx219 =
692 container_of(ctrl->handler, struct imx219, ctrl_handler);
693 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
696 if (ctrl->id == V4L2_CID_VBLANK) {
697 int exposure_max, exposure_def;
699 /* Update max exposure while meeting expected vblanking */
700 exposure_max = imx219->mode->height + ctrl->val - 4;
701 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
702 exposure_max : IMX219_EXPOSURE_DEFAULT;
703 __v4l2_ctrl_modify_range(imx219->exposure, imx219->exposure->minimum,
704 exposure_max, imx219->exposure->step, exposure_def);
708 * Applying V4L2 control value only happens
709 * when power is up for streaming
711 if (pm_runtime_get_if_in_use(&client->dev) == 0)
715 case V4L2_CID_ANALOGUE_GAIN:
716 ret = imx219_write_reg(imx219, IMX219_REG_ANALOG_GAIN,
717 IMX219_REG_VALUE_08BIT, ctrl->val);
719 case V4L2_CID_EXPOSURE:
720 ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE,
721 IMX219_REG_VALUE_16BIT, ctrl->val);
723 case V4L2_CID_DIGITAL_GAIN:
724 ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN,
725 IMX219_REG_VALUE_16BIT, ctrl->val);
727 case V4L2_CID_TEST_PATTERN:
728 ret = imx219_write_reg(imx219, IMX219_REG_TEST_PATTERN,
729 IMX219_REG_VALUE_16BIT, imx219_test_pattern_val[ctrl->val]);
733 ret = imx219_write_reg(imx219, IMX219_REG_ORIENTATION, 1,
734 imx219->hflip->val | imx219->vflip->val << 1);
736 case V4L2_CID_VBLANK:
737 ret = imx219_write_reg(imx219, IMX219_REG_VTS, IMX219_REG_VALUE_16BIT,
738 imx219->mode->height + ctrl->val);
740 case V4L2_CID_TEST_PATTERN_RED:
741 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED,
742 IMX219_REG_VALUE_16BIT, ctrl->val);
744 case V4L2_CID_TEST_PATTERN_GREENR:
745 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENR,
746 IMX219_REG_VALUE_16BIT, ctrl->val);
748 case V4L2_CID_TEST_PATTERN_BLUE:
749 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_BLUE,
750 IMX219_REG_VALUE_16BIT, ctrl->val);
752 case V4L2_CID_TEST_PATTERN_GREENB:
753 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENB,
754 IMX219_REG_VALUE_16BIT, ctrl->val);
757 dev_info(&client->dev,
758 "ctrl(id:0x%x,val:0x%x) is not handled\n", ctrl->id, ctrl->val);
763 pm_runtime_put(&client->dev);
768 static const struct v4l2_ctrl_ops imx219_ctrl_ops = {
769 .s_ctrl = imx219_set_ctrl,
772 static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
773 struct v4l2_subdev_state *state,
774 struct v4l2_subdev_mbus_code_enum *code)
776 struct imx219 *imx219 = to_imx219(sd);
778 if (code->index >= (ARRAY_SIZE(codes) / 4))
781 mutex_lock(&imx219->mutex);
782 code->code = imx219_get_format_code(imx219, codes[code->index * 4]);
783 mutex_unlock(&imx219->mutex);
788 static int imx219_enum_frame_size(struct v4l2_subdev *sd,
789 struct v4l2_subdev_state *state,
790 struct v4l2_subdev_frame_size_enum *fse)
792 struct imx219 *imx219 = to_imx219(sd);
795 if (fse->index >= ARRAY_SIZE(supported_modes))
798 mutex_lock(&imx219->mutex);
799 code = imx219_get_format_code(imx219, fse->code);
800 mutex_unlock(&imx219->mutex);
801 if (fse->code != code)
804 fse->min_width = supported_modes[fse->index].width;
805 fse->max_width = fse->min_width;
806 fse->min_height = supported_modes[fse->index].height;
807 fse->max_height = fse->min_height;
812 static int imx219_try_frame_interval(struct imx219 *imx219,
813 struct v4l2_fract *fi,
816 const struct imx219_mode *mode;
818 mode = v4l2_find_nearest_size(supported_modes, ARRAY_SIZE(supported_modes),
819 width, height, w, h);
820 if (!mode || (mode->width != w || mode->height != h))
824 fi->denominator = mode->fps;
829 static int imx219_enum_frame_interval(struct v4l2_subdev *sd,
830 struct v4l2_subdev_state *state,
831 struct v4l2_subdev_frame_interval_enum *fie)
833 struct imx219 *imx219 = to_imx219(sd);
834 struct v4l2_fract tpf;
838 if (fie->index >= ARRAY_SIZE(supported_modes))
841 mutex_lock(&imx219->mutex);
842 code = imx219_get_format_code(imx219, fie->code);
843 if (fie->code != code) {
848 ret = imx219_try_frame_interval(imx219, &tpf,
849 fie->width, fie->height);
855 mutex_unlock(&imx219->mutex);
861 mutex_unlock(&imx219->mutex);
865 static int imx219_g_frame_interval(struct v4l2_subdev *sd,
866 struct v4l2_subdev_frame_interval *fi)
868 struct imx219 *imx219 = to_imx219(sd);
870 mutex_lock(&imx219->mutex);
871 fi->interval = imx219->frame_interval;
872 mutex_unlock(&imx219->mutex);
877 static int imx219_s_frame_interval(struct v4l2_subdev *sd,
878 struct v4l2_subdev_frame_interval *fi)
880 struct imx219 *imx219 = to_imx219(sd);
881 const struct imx219_mode *mode = imx219->mode;
882 int frame_rate, ret = 0;
887 mutex_lock(&imx219->mutex);
889 if (imx219->streaming) {
894 frame_rate = imx219_try_frame_interval(imx219, &fi->interval,
895 mode->width, mode->height);
896 if (frame_rate < 0) {
901 imx219->frame_interval = fi->interval;
904 mutex_unlock(&imx219->mutex);
908 static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
910 fmt->colorspace = V4L2_COLORSPACE_SRGB;
911 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
912 fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
913 fmt->colorspace, fmt->ycbcr_enc);
914 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
917 static void imx219_update_pad_format(struct imx219 *imx219,
918 const struct imx219_mode *mode,
919 struct v4l2_subdev_format *fmt)
921 fmt->format.width = mode->width;
922 fmt->format.height = mode->height;
923 fmt->format.field = V4L2_FIELD_NONE;
924 imx219_reset_colorspace(&fmt->format);
927 static int __imx219_get_pad_format(struct imx219 *imx219,
928 struct v4l2_subdev_state *state,
929 struct v4l2_subdev_format *fmt)
931 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
932 struct v4l2_mbus_framefmt *try_fmt =
933 v4l2_subdev_get_try_format(&imx219->sd, state, fmt->pad);
934 /* update the code which could change due to vflip or hflip: */
935 try_fmt->code = imx219_get_format_code(imx219, try_fmt->code);
936 fmt->format = *try_fmt;
938 imx219_update_pad_format(imx219, imx219->mode, fmt);
939 fmt->format.code = imx219_get_format_code(imx219, imx219->fmt.code);
945 static int imx219_get_pad_format(struct v4l2_subdev *sd,
946 struct v4l2_subdev_state *state,
947 struct v4l2_subdev_format *fmt)
949 struct imx219 *imx219 = to_imx219(sd);
952 mutex_lock(&imx219->mutex);
953 ret = __imx219_get_pad_format(imx219, state, fmt);
954 mutex_unlock(&imx219->mutex);
959 static int imx219_set_pad_format(struct v4l2_subdev *sd,
960 struct v4l2_subdev_state *state,
961 struct v4l2_subdev_format *fmt)
963 struct imx219 *imx219 = to_imx219(sd);
964 const struct imx219_mode *mode;
965 struct v4l2_mbus_framefmt *framefmt;
966 int exposure_max, exposure_def, hblank;
969 mutex_lock(&imx219->mutex);
971 for (i = 0; i < ARRAY_SIZE(codes); i++)
972 if (codes[i] == fmt->format.code)
974 if (i >= ARRAY_SIZE(codes))
977 /* Bayer order varies with flips */
978 fmt->format.code = imx219_get_format_code(imx219, codes[i]);
980 mode = v4l2_find_nearest_size(supported_modes, ARRAY_SIZE(supported_modes),
981 width, height, fmt->format.width, fmt->format.height);
982 imx219_update_pad_format(imx219, mode, fmt);
983 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
984 framefmt = v4l2_subdev_get_try_format(sd, state, fmt->pad);
985 *framefmt = fmt->format;
986 } else if (imx219->mode != mode ||
987 imx219->fmt.code != fmt->format.code) {
988 imx219->fmt = fmt->format;
990 /* Update limits and set FPS to default */
991 __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
992 IMX219_VTS_MAX - mode->height, 1,
993 mode->vts_def - mode->height);
994 __v4l2_ctrl_s_ctrl(imx219->vblank, mode->vts_def - mode->height);
995 /* Update max exposure while meeting expected vblanking */
996 exposure_max = mode->vts_def - 4;
997 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
998 exposure_max : IMX219_EXPOSURE_DEFAULT;
999 __v4l2_ctrl_modify_range(imx219->exposure, imx219->exposure->minimum,
1000 exposure_max, imx219->exposure->step, exposure_def);
1002 * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank
1003 * depends on mode->width only, and is not changeble in any
1004 * way other than changing the mode.
1006 hblank = IMX219_PPL_DEFAULT - mode->width;
1007 __v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1, hblank);
1010 mutex_unlock(&imx219->mutex);
1015 static int imx219_set_framefmt(struct imx219 *imx219)
1017 switch (imx219->fmt.code) {
1018 case MEDIA_BUS_FMT_SRGGB8_1X8:
1019 case MEDIA_BUS_FMT_SGRBG8_1X8:
1020 case MEDIA_BUS_FMT_SGBRG8_1X8:
1021 case MEDIA_BUS_FMT_SBGGR8_1X8:
1022 return imx219_write_regs(imx219, raw8_framefmt_regs,
1023 ARRAY_SIZE(raw8_framefmt_regs));
1025 case MEDIA_BUS_FMT_SRGGB10_1X10:
1026 case MEDIA_BUS_FMT_SGRBG10_1X10:
1027 case MEDIA_BUS_FMT_SGBRG10_1X10:
1028 case MEDIA_BUS_FMT_SBGGR10_1X10:
1029 return imx219_write_regs(imx219, raw10_framefmt_regs,
1030 ARRAY_SIZE(raw10_framefmt_regs));
1036 static const struct v4l2_rect *
1037 __imx219_get_pad_crop(struct imx219 *imx219, struct v4l2_subdev_state *state,
1038 unsigned int pad, enum v4l2_subdev_format_whence which)
1041 case V4L2_SUBDEV_FORMAT_TRY:
1042 return v4l2_subdev_get_try_crop(&imx219->sd, state, pad);
1043 case V4L2_SUBDEV_FORMAT_ACTIVE:
1044 return &imx219->mode->crop;
1050 static int imx219_get_selection(struct v4l2_subdev *sd,
1051 struct v4l2_subdev_state *state,
1052 struct v4l2_subdev_selection *sel)
1054 switch (sel->target) {
1055 case V4L2_SEL_TGT_CROP: {
1056 struct imx219 *imx219 = to_imx219(sd);
1058 mutex_lock(&imx219->mutex);
1059 sel->r = *__imx219_get_pad_crop(imx219, state, sel->pad, sel->which);
1060 mutex_unlock(&imx219->mutex);
1064 case V4L2_SEL_TGT_NATIVE_SIZE:
1067 sel->r.width = IMX219_NATIVE_WIDTH;
1068 sel->r.height = IMX219_NATIVE_HEIGHT;
1071 case V4L2_SEL_TGT_CROP_DEFAULT:
1072 case V4L2_SEL_TGT_CROP_BOUNDS:
1073 sel->r.top = IMX219_PIXEL_ARRAY_TOP;
1074 sel->r.left = IMX219_PIXEL_ARRAY_LEFT;
1075 sel->r.width = IMX219_PIXEL_ARRAY_WIDTH;
1076 sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT;
1083 static int imx219_start_streaming(struct imx219 *imx219)
1085 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1086 const struct imx219_reg_list *reg_list;
1089 /* Apply default values of current mode */
1090 reg_list = &imx219->mode->reg_list;
1091 ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs);
1093 dev_err(&client->dev, "%s failed to set mode\n", __func__);
1097 ret = imx219_set_framefmt(imx219);
1099 dev_err(&client->dev, "%s failed to set frame format: %d\n",
1104 /* Apply customized values from user */
1105 ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler);
1109 /* set stream on register */
1110 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1111 IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING);
1115 /* vflip and hflip cannot change during streaming */
1116 __v4l2_ctrl_grab(imx219->vflip, true);
1117 __v4l2_ctrl_grab(imx219->hflip, true);
1125 static void imx219_stop_streaming(struct imx219 *imx219)
1127 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1130 /* set stream off register */
1131 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1132 IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY);
1134 dev_err(&client->dev, "%s failed to set stream\n", __func__);
1136 __v4l2_ctrl_grab(imx219->vflip, false);
1137 __v4l2_ctrl_grab(imx219->hflip, false);
1140 static int imx219_set_stream(struct v4l2_subdev *sd, int enable)
1142 struct imx219 *imx219 = to_imx219(sd);
1143 struct i2c_client *client = v4l2_get_subdevdata(sd);
1146 mutex_lock(&imx219->mutex);
1149 ret = pm_runtime_get_sync(&client->dev);
1151 pm_runtime_put_noidle(&client->dev);
1152 mutex_unlock(&imx219->mutex);
1156 if (imx219->streaming)
1160 * Apply default & customized values
1161 * and then start streaming.
1163 ret = imx219_start_streaming(imx219);
1167 imx219_stop_streaming(imx219);
1168 pm_runtime_put(&client->dev);
1172 imx219->streaming += enable ? 1 : -1;
1173 WARN_ON(imx219->streaming < 0);
1175 mutex_unlock(&imx219->mutex);
1180 pm_runtime_put(&client->dev);
1181 mutex_unlock(&imx219->mutex);
1186 /* Power/clock management functions */
1187 static int imx219_power_on(struct device *dev)
1189 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1190 struct imx219 *imx219 = to_imx219(sd);
1191 struct sensor_pinctrl_info *sensor_pctrl = &imx219->imx219_pctrl;
1194 ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES, imx219->supplies);
1196 dev_err(dev, "%s: failed to enable regulators\n",
1201 ret = clk_prepare_enable(imx219->xclk);
1203 dev_err(dev, "%s: failed to enable clock\n", __func__);
1207 if (sensor_pctrl->use_pinctrl) {
1208 ret = pinctrl_select_state(
1209 sensor_pctrl->pinctrl,
1210 sensor_pctrl->power_up);
1212 pr_err("cannot set pin to power up\n");
1214 gpiod_set_value_cansleep(imx219->reset_gpio, 1);
1216 usleep_range(IMX219_XCLR_MIN_DELAY_US,
1217 IMX219_XCLR_MIN_DELAY_US + IMX219_XCLR_DELAY_RANGE_US);
1222 regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies);
1227 static int imx219_power_off(struct device *dev)
1229 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1230 struct imx219 *imx219 = to_imx219(sd);
1231 struct sensor_pinctrl_info *sensor_pctrl = &imx219->imx219_pctrl;
1234 if (sensor_pctrl->use_pinctrl) {
1235 ret = pinctrl_select_state(
1236 sensor_pctrl->pinctrl,
1237 sensor_pctrl->power_down);
1239 pr_err("cannot set pin to power_down\n");
1241 gpiod_set_value_cansleep(imx219->reset_gpio, 0);
1243 regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies);
1244 clk_disable_unprepare(imx219->xclk);
1249 static int imx219_get_regulators(struct imx219 *imx219)
1251 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1254 for (i = 0; i < IMX219_NUM_SUPPLIES; i++)
1255 imx219->supplies[i].supply = imx219_supply_name[i];
1257 return devm_regulator_bulk_get(&client->dev,
1258 IMX219_NUM_SUPPLIES, imx219->supplies);
1261 /* Verify chip ID */
1262 static int imx219_identify_module(struct imx219 *imx219)
1264 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1268 ret = imx219_read_reg(imx219, IMX219_REG_CHIP_ID,
1269 IMX219_REG_VALUE_16BIT, &val);
1271 dev_err(&client->dev, "failed to read chip id %x\n",
1276 if (val != IMX219_CHIP_ID) {
1277 dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
1278 IMX219_CHIP_ID, val);
1282 dev_err(&client->dev, "%s: chip identifier, got 0x%x\n",
1283 __func__, IMX219_CHIP_ID);
1288 static const struct v4l2_subdev_core_ops imx219_core_ops = {
1289 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
1290 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1293 static const struct v4l2_subdev_video_ops imx219_video_ops = {
1294 .g_frame_interval = imx219_g_frame_interval,
1295 .s_frame_interval = imx219_s_frame_interval,
1296 .s_stream = imx219_set_stream,
1299 static const struct v4l2_subdev_pad_ops imx219_pad_ops = {
1300 .enum_mbus_code = imx219_enum_mbus_code,
1301 .get_fmt = imx219_get_pad_format,
1302 .set_fmt = imx219_set_pad_format,
1303 .get_selection = imx219_get_selection,
1304 .enum_frame_size = imx219_enum_frame_size,
1305 .enum_frame_interval = imx219_enum_frame_interval,
1308 static const struct v4l2_subdev_ops imx219_subdev_ops = {
1309 .core = &imx219_core_ops,
1310 .video = &imx219_video_ops,
1311 .pad = &imx219_pad_ops,
1314 static const struct v4l2_subdev_internal_ops imx219_internal_ops = {
1315 .open = imx219_open,
1318 /* Initialize control handlers */
1319 static int imx219_init_controls(struct imx219 *imx219)
1321 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1322 struct v4l2_ctrl_handler *ctrl_hdlr;
1323 unsigned int height = imx219->mode->height;
1324 struct v4l2_fwnode_device_properties props;
1325 int exposure_max, exposure_def, hblank;
1328 ctrl_hdlr = &imx219->ctrl_handler;
1329 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12);
1333 mutex_init(&imx219->mutex);
1334 ctrl_hdlr->lock = &imx219->mutex;
1336 /* By default, PIXEL_RATE is read only */
1337 imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1338 V4L2_CID_PIXEL_RATE, IMX219_PIXEL_RATE,
1339 IMX219_PIXEL_RATE, 1, IMX219_PIXEL_RATE);
1342 v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_LINK_FREQ,
1343 ARRAY_SIZE(imx219_link_freq_menu) - 1, 0, imx219_link_freq_menu);
1344 if (imx219->link_freq)
1345 imx219->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1347 /* Initial vblank/hblank/exposure parameters based on current mode */
1348 imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1349 V4L2_CID_VBLANK, IMX219_VBLANK_MIN,
1350 IMX219_VTS_MAX - height, 1,
1351 imx219->mode->vts_def - height);
1352 hblank = IMX219_PPL_DEFAULT - imx219->mode->width;
1353 imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1354 V4L2_CID_HBLANK, hblank, hblank, 1, hblank);
1356 imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1357 exposure_max = imx219->mode->vts_def - 4;
1358 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
1359 exposure_max : IMX219_EXPOSURE_DEFAULT;
1360 imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1361 V4L2_CID_EXPOSURE, IMX219_EXPOSURE_MIN, exposure_max,
1362 IMX219_EXPOSURE_STEP, exposure_def);
1364 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
1365 IMX219_ANA_GAIN_MIN, IMX219_ANA_GAIN_MAX,
1366 IMX219_ANA_GAIN_STEP, IMX219_ANA_GAIN_DEFAULT);
1368 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
1369 IMX219_DGTL_GAIN_MIN, IMX219_DGTL_GAIN_MAX,
1370 IMX219_DGTL_GAIN_STEP, IMX219_DGTL_GAIN_DEFAULT);
1372 imx219->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1373 V4L2_CID_HFLIP, 0, 1, 1, 0);
1375 imx219->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1377 imx219->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1378 V4L2_CID_VFLIP, 0, 1, 1, 0);
1380 imx219->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1382 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_TEST_PATTERN,
1383 ARRAY_SIZE(imx219_test_pattern_menu) - 1,
1384 0, 0, imx219_test_pattern_menu);
1385 for (i = 0; i < 4; i++) {
1387 * The assumption is that
1388 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
1389 * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2
1390 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
1392 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1393 V4L2_CID_TEST_PATTERN_RED + i,
1394 IMX219_TESTP_COLOUR_MIN,
1395 IMX219_TESTP_COLOUR_MAX,
1396 IMX219_TESTP_COLOUR_STEP,
1397 IMX219_TESTP_COLOUR_MAX);
1398 /* The "Solid color" pattern is white by default */
1401 if (ctrl_hdlr->error) {
1402 ret = ctrl_hdlr->error;
1403 dev_err(&client->dev, "%s control init failed (%d)\n",
1408 ret = v4l2_fwnode_device_parse(&client->dev, &props);
1412 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx219_ctrl_ops, &props);
1416 imx219->sd.ctrl_handler = ctrl_hdlr;
1421 v4l2_ctrl_handler_free(ctrl_hdlr);
1422 mutex_destroy(&imx219->mutex);
1427 static void imx219_free_controls(struct imx219 *imx219)
1429 v4l2_ctrl_handler_free(imx219->sd.ctrl_handler);
1430 mutex_destroy(&imx219->mutex);
1433 static int imx219_check_hwcfg(struct device *dev)
1435 struct fwnode_handle *endpoint;
1436 struct v4l2_fwnode_endpoint ep_cfg = {
1437 .bus_type = V4L2_MBUS_CSI2_DPHY
1441 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
1443 dev_err(dev, "endpoint node not found\n");
1447 if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
1448 dev_err(dev, "could not parse endpoint\n");
1452 /* Check the number of MIPI CSI2 data lanes */
1453 if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
1454 dev_err(dev, "only 2 data lanes are currently supported\n");
1458 /* Check the link frequency set in device tree */
1459 if (!ep_cfg.nr_of_link_frequencies) {
1460 dev_err(dev, "link-frequency property not found in DT\n");
1464 if (ep_cfg.nr_of_link_frequencies != 1 ||
1465 ep_cfg.link_frequencies[0] != IMX219_DEFAULT_LINK_FREQ) {
1466 dev_err(dev, "Link frequency not supported: %lld\n",
1467 ep_cfg.link_frequencies[0]);
1474 v4l2_fwnode_endpoint_free(&ep_cfg);
1475 fwnode_handle_put(endpoint);
1480 static int imx219_probe(struct i2c_client *client)
1482 struct device *dev = &client->dev;
1483 struct imx219 *imx219;
1486 imx219 = devm_kzalloc(&client->dev, sizeof(*imx219), GFP_KERNEL);
1490 v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops);
1492 /* Check the hardware configuration in device tree */
1493 if (imx219_check_hwcfg(dev))
1496 /* Get system clock (xclk) */
1497 imx219->xclk = devm_clk_get(dev, NULL);
1498 if (IS_ERR(imx219->xclk)) {
1499 dev_err(dev, "failed to get xclk\n");
1500 return PTR_ERR(imx219->xclk);
1503 imx219->xclk_freq = clk_get_rate(imx219->xclk);
1504 if (imx219->xclk_freq != IMX219_XCLK_FREQ) {
1505 dev_err(dev, "xclk frequency not supported: %d Hz\n",
1510 ret = imx219_get_regulators(imx219);
1512 dev_err(dev, "failed to get regulators\n");
1516 ret = imx219_sensor_pinctrl_init(&imx219->imx219_pctrl, dev);
1518 pr_err("Can't get pinctrl, use gpio to ctrl\n");
1519 /* Request optional enable pin */
1520 imx219->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
1521 imx219->imx219_pctrl.use_pinctrl = false;
1525 * The sensor must be powered for imx219_identify_module()
1526 * to be able to read the CHIP_ID register
1528 ret = imx219_power_on(dev);
1532 ret = imx219_identify_module(imx219);
1534 goto error_power_off;
1536 /* Set default mode to max resolution */
1537 imx219->mode = &supported_modes[0];
1538 imx219->frame_interval.numerator = 1;
1539 imx219->frame_interval.denominator = supported_modes[0].fps;
1541 /* sensor doesn't enter LP-11 state upon power up until and unless
1542 * streaming is started, so upon power up switch the modes to:
1543 * streaming -> standby
1545 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1546 IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING);
1548 goto error_power_off;
1549 usleep_range(100, 110);
1551 /* put sensor back to standby mode */
1552 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1553 IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY);
1555 goto error_power_off;
1556 usleep_range(100, 110);
1558 ret = imx219_init_controls(imx219);
1560 goto error_power_off;
1562 /* Initialize subdev */
1563 imx219->sd.internal_ops = &imx219_internal_ops;
1564 imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
1565 imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1567 /* Initialize source pad */
1568 imx219->pad.flags = MEDIA_PAD_FL_SOURCE;
1570 /* Initialize default format */
1571 imx219_set_default_format(imx219);
1573 ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad);
1575 dev_err(dev, "failed to init entity pads: %d\n", ret);
1576 goto error_handler_free;
1579 ret = v4l2_async_register_subdev_sensor(&imx219->sd);
1581 dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
1582 goto error_media_entity;
1585 /* Enable runtime PM and turn off the device */
1586 pm_runtime_set_active(dev);
1587 pm_runtime_enable(dev);
1588 pm_runtime_idle(dev);
1593 media_entity_cleanup(&imx219->sd.entity);
1596 imx219_free_controls(imx219);
1599 imx219_power_off(dev);
1604 static int imx219_remove(struct i2c_client *client)
1606 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1607 struct imx219 *imx219 = to_imx219(sd);
1609 v4l2_async_unregister_subdev(sd);
1610 media_entity_cleanup(&sd->entity);
1611 imx219_free_controls(imx219);
1613 pm_runtime_disable(&client->dev);
1614 if (!pm_runtime_status_suspended(&client->dev))
1615 imx219_power_off(&client->dev);
1616 pm_runtime_set_suspended(&client->dev);
1621 static const struct of_device_id imx219_dt_ids[] = {
1622 { .compatible = "sony,imx219" },
1625 MODULE_DEVICE_TABLE(of, imx219_dt_ids);
1627 static const struct dev_pm_ops imx219_pm_ops = {
1628 SET_RUNTIME_PM_OPS(imx219_power_off, imx219_power_on, NULL)
1631 static struct i2c_driver imx219_i2c_driver = {
1634 .of_match_table = imx219_dt_ids,
1635 .pm = &imx219_pm_ops,
1637 .probe_new = imx219_probe,
1638 .remove = imx219_remove,
1641 module_i2c_driver(imx219_i2c_driver);
1643 MODULE_AUTHOR("David.li");
1644 MODULE_DESCRIPTION("Sony IMX219 sensor driver");
1645 MODULE_LICENSE("GPL v2");