1 // SPDX-License-Identifier: GPL-2.0-only
3 * Sony imx412 Camera Sensor Driver
5 * Copyright (C) 2021 Intel Corporation
7 #include <asm/unaligned.h>
10 #include <linux/delay.h>
11 #include <linux/i2c.h>
12 #include <linux/module.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/regulator/consumer.h>
16 #include <media/v4l2-ctrls.h>
17 #include <media/v4l2-fwnode.h>
18 #include <media/v4l2-subdev.h>
21 #define IMX412_REG_MODE_SELECT 0x0100
22 #define IMX412_MODE_STANDBY 0x00
23 #define IMX412_MODE_STREAMING 0x01
26 #define IMX412_REG_LPFR 0x0340
29 #define IMX412_REG_ID 0x0016
30 #define IMX412_ID 0x577
32 /* Exposure control */
33 #define IMX412_REG_EXPOSURE_CIT 0x0202
34 #define IMX412_EXPOSURE_MIN 8
35 #define IMX412_EXPOSURE_OFFSET 22
36 #define IMX412_EXPOSURE_STEP 1
37 #define IMX412_EXPOSURE_DEFAULT 0x0648
39 /* Analog gain control */
40 #define IMX412_REG_AGAIN 0x0204
41 #define IMX412_AGAIN_MIN 0
42 #define IMX412_AGAIN_MAX 978
43 #define IMX412_AGAIN_STEP 1
44 #define IMX412_AGAIN_DEFAULT 0
46 /* Group hold register */
47 #define IMX412_REG_HOLD 0x0104
49 /* Input clock rate */
50 #define IMX412_INCLK_RATE 24000000
52 /* CSI2 HW configuration */
53 #define IMX412_LINK_FREQ 600000000
54 #define IMX412_NUM_DATA_LANES 4
56 #define IMX412_REG_MIN 0x00
57 #define IMX412_REG_MAX 0xffff
60 * struct imx412_reg - imx412 sensor register
61 * @address: Register address
62 * @val: Register value
70 * struct imx412_reg_list - imx412 sensor register list
71 * @num_of_regs: Number of registers in the list
72 * @regs: Pointer to register list
74 struct imx412_reg_list {
76 const struct imx412_reg *regs;
80 * struct imx412_mode - imx412 sensor mode structure
82 * @height: Frame height
84 * @hblank: Horizontal blanking in lines
85 * @vblank: Vertical blanking in lines
86 * @vblank_min: Minimum vertical blanking in lines
87 * @vblank_max: Maximum vertical blanking in lines
88 * @pclk: Sensor pixel clock
89 * @link_freq_idx: Link frequency index
90 * @reg_list: Register list for sensor mode
102 struct imx412_reg_list reg_list;
105 static const char * const imx412_supply_names[] = {
106 "dovdd", /* Digital I/O power */
107 "avdd", /* Analog power */
108 "dvdd", /* Digital core power */
112 * struct imx412 - imx412 sensor device structure
113 * @dev: Pointer to generic device
114 * @client: Pointer to i2c client
115 * @sd: V4L2 sub-device
116 * @pad: Media pad. Only one pad supported
117 * @reset_gpio: Sensor reset gpio
118 * @inclk: Sensor input clock
119 * @supplies: Regulator supplies
120 * @ctrl_handler: V4L2 control handler
121 * @link_freq_ctrl: Pointer to link frequency control
122 * @pclk_ctrl: Pointer to pixel clock control
123 * @hblank_ctrl: Pointer to horizontal blanking control
124 * @vblank_ctrl: Pointer to vertical blanking control
125 * @exp_ctrl: Pointer to exposure control
126 * @again_ctrl: Pointer to analog gain control
127 * @vblank: Vertical blanking in lines
128 * @cur_mode: Pointer to current selected sensor mode
129 * @mutex: Mutex for serializing sensor controls
133 struct i2c_client *client;
134 struct v4l2_subdev sd;
135 struct media_pad pad;
136 struct gpio_desc *reset_gpio;
138 struct regulator_bulk_data supplies[ARRAY_SIZE(imx412_supply_names)];
139 struct v4l2_ctrl_handler ctrl_handler;
140 struct v4l2_ctrl *link_freq_ctrl;
141 struct v4l2_ctrl *pclk_ctrl;
142 struct v4l2_ctrl *hblank_ctrl;
143 struct v4l2_ctrl *vblank_ctrl;
145 struct v4l2_ctrl *exp_ctrl;
146 struct v4l2_ctrl *again_ctrl;
149 const struct imx412_mode *cur_mode;
153 static const s64 link_freq[] = {
157 /* Sensor mode registers */
158 static const struct imx412_reg mode_4056x3040_regs[] = {
392 /* Supported sensor mode configurations */
393 static const struct imx412_mode supported_mode = {
402 .code = MEDIA_BUS_FMT_SRGGB10_1X10,
404 .num_of_regs = ARRAY_SIZE(mode_4056x3040_regs),
405 .regs = mode_4056x3040_regs,
410 * to_imx412() - imx412 V4L2 sub-device to imx412 device.
411 * @subdev: pointer to imx412 V4L2 sub-device
413 * Return: pointer to imx412 device
415 static inline struct imx412 *to_imx412(struct v4l2_subdev *subdev)
417 return container_of(subdev, struct imx412, sd);
421 * imx412_read_reg() - Read registers.
422 * @imx412: pointer to imx412 device
423 * @reg: register address
424 * @len: length of bytes to read. Max supported bytes is 4
425 * @val: pointer to register value to be filled.
427 * Return: 0 if successful, error code otherwise.
429 static int imx412_read_reg(struct imx412 *imx412, u16 reg, u32 len, u32 *val)
431 struct i2c_client *client = v4l2_get_subdevdata(&imx412->sd);
432 struct i2c_msg msgs[2] = {0};
433 u8 addr_buf[2] = {0};
434 u8 data_buf[4] = {0};
437 if (WARN_ON(len > 4))
440 put_unaligned_be16(reg, addr_buf);
442 /* Write register address */
443 msgs[0].addr = client->addr;
445 msgs[0].len = ARRAY_SIZE(addr_buf);
446 msgs[0].buf = addr_buf;
448 /* Read data from register */
449 msgs[1].addr = client->addr;
450 msgs[1].flags = I2C_M_RD;
452 msgs[1].buf = &data_buf[4 - len];
454 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
455 if (ret != ARRAY_SIZE(msgs))
458 *val = get_unaligned_be32(data_buf);
464 * imx412_write_reg() - Write register
465 * @imx412: pointer to imx412 device
466 * @reg: register address
467 * @len: length of bytes. Max supported bytes is 4
468 * @val: register value
470 * Return: 0 if successful, error code otherwise.
472 static int imx412_write_reg(struct imx412 *imx412, u16 reg, u32 len, u32 val)
474 struct i2c_client *client = v4l2_get_subdevdata(&imx412->sd);
477 if (WARN_ON(len > 4))
480 put_unaligned_be16(reg, buf);
481 put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
482 if (i2c_master_send(client, buf, len + 2) != len + 2)
489 * imx412_write_regs() - Write a list of registers
490 * @imx412: pointer to imx412 device
491 * @regs: list of registers to be written
492 * @len: length of registers array
494 * Return: 0 if successful, error code otherwise.
496 static int imx412_write_regs(struct imx412 *imx412,
497 const struct imx412_reg *regs, u32 len)
502 for (i = 0; i < len; i++) {
503 ret = imx412_write_reg(imx412, regs[i].address, 1, regs[i].val);
512 * imx412_update_controls() - Update control ranges based on streaming mode
513 * @imx412: pointer to imx412 device
514 * @mode: pointer to imx412_mode sensor mode
516 * Return: 0 if successful, error code otherwise.
518 static int imx412_update_controls(struct imx412 *imx412,
519 const struct imx412_mode *mode)
523 ret = __v4l2_ctrl_s_ctrl(imx412->link_freq_ctrl, mode->link_freq_idx);
527 ret = __v4l2_ctrl_s_ctrl(imx412->hblank_ctrl, mode->hblank);
531 return __v4l2_ctrl_modify_range(imx412->vblank_ctrl, mode->vblank_min,
532 mode->vblank_max, 1, mode->vblank);
536 * imx412_update_exp_gain() - Set updated exposure and gain
537 * @imx412: pointer to imx412 device
538 * @exposure: updated exposure value
539 * @gain: updated analog gain value
541 * Return: 0 if successful, error code otherwise.
543 static int imx412_update_exp_gain(struct imx412 *imx412, u32 exposure, u32 gain)
548 lpfr = imx412->vblank + imx412->cur_mode->height;
549 shutter = lpfr - exposure;
551 dev_dbg(imx412->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u",
552 exposure, gain, shutter, lpfr);
554 ret = imx412_write_reg(imx412, IMX412_REG_HOLD, 1, 1);
558 ret = imx412_write_reg(imx412, IMX412_REG_LPFR, 2, lpfr);
560 goto error_release_group_hold;
562 ret = imx412_write_reg(imx412, IMX412_REG_EXPOSURE_CIT, 2, shutter);
564 goto error_release_group_hold;
566 ret = imx412_write_reg(imx412, IMX412_REG_AGAIN, 2, gain);
568 error_release_group_hold:
569 imx412_write_reg(imx412, IMX412_REG_HOLD, 1, 0);
575 * imx412_set_ctrl() - Set subdevice control
576 * @ctrl: pointer to v4l2_ctrl structure
578 * Supported controls:
580 * - cluster controls:
581 * - V4L2_CID_ANALOGUE_GAIN
582 * - V4L2_CID_EXPOSURE
584 * Return: 0 if successful, error code otherwise.
586 static int imx412_set_ctrl(struct v4l2_ctrl *ctrl)
588 struct imx412 *imx412 =
589 container_of(ctrl->handler, struct imx412, ctrl_handler);
595 case V4L2_CID_VBLANK:
596 imx412->vblank = imx412->vblank_ctrl->val;
598 dev_dbg(imx412->dev, "Received vblank %u, new lpfr %u",
600 imx412->vblank + imx412->cur_mode->height);
602 ret = __v4l2_ctrl_modify_range(imx412->exp_ctrl,
605 imx412->cur_mode->height -
606 IMX412_EXPOSURE_OFFSET,
607 1, IMX412_EXPOSURE_DEFAULT);
609 case V4L2_CID_EXPOSURE:
610 /* Set controls only if sensor is in power on state */
611 if (!pm_runtime_get_if_in_use(imx412->dev))
614 exposure = ctrl->val;
615 analog_gain = imx412->again_ctrl->val;
617 dev_dbg(imx412->dev, "Received exp %u, analog gain %u",
618 exposure, analog_gain);
620 ret = imx412_update_exp_gain(imx412, exposure, analog_gain);
622 pm_runtime_put(imx412->dev);
626 dev_err(imx412->dev, "Invalid control %d", ctrl->id);
633 /* V4l2 subdevice control ops*/
634 static const struct v4l2_ctrl_ops imx412_ctrl_ops = {
635 .s_ctrl = imx412_set_ctrl,
639 * imx412_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
640 * @sd: pointer to imx412 V4L2 sub-device structure
641 * @sd_state: V4L2 sub-device configuration
642 * @code: V4L2 sub-device code enumeration need to be filled
644 * Return: 0 if successful, error code otherwise.
646 static int imx412_enum_mbus_code(struct v4l2_subdev *sd,
647 struct v4l2_subdev_state *sd_state,
648 struct v4l2_subdev_mbus_code_enum *code)
653 code->code = supported_mode.code;
659 * imx412_enum_frame_size() - Enumerate V4L2 sub-device frame sizes
660 * @sd: pointer to imx412 V4L2 sub-device structure
661 * @sd_state: V4L2 sub-device configuration
662 * @fsize: V4L2 sub-device size enumeration need to be filled
664 * Return: 0 if successful, error code otherwise.
666 static int imx412_enum_frame_size(struct v4l2_subdev *sd,
667 struct v4l2_subdev_state *sd_state,
668 struct v4l2_subdev_frame_size_enum *fsize)
670 if (fsize->index > 0)
673 if (fsize->code != supported_mode.code)
676 fsize->min_width = supported_mode.width;
677 fsize->max_width = fsize->min_width;
678 fsize->min_height = supported_mode.height;
679 fsize->max_height = fsize->min_height;
685 * imx412_fill_pad_format() - Fill subdevice pad format
686 * from selected sensor mode
687 * @imx412: pointer to imx412 device
688 * @mode: pointer to imx412_mode sensor mode
689 * @fmt: V4L2 sub-device format need to be filled
691 static void imx412_fill_pad_format(struct imx412 *imx412,
692 const struct imx412_mode *mode,
693 struct v4l2_subdev_format *fmt)
695 fmt->format.width = mode->width;
696 fmt->format.height = mode->height;
697 fmt->format.code = mode->code;
698 fmt->format.field = V4L2_FIELD_NONE;
699 fmt->format.colorspace = V4L2_COLORSPACE_RAW;
700 fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
701 fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT;
702 fmt->format.xfer_func = V4L2_XFER_FUNC_NONE;
706 * imx412_get_pad_format() - Get subdevice pad format
707 * @sd: pointer to imx412 V4L2 sub-device structure
708 * @sd_state: V4L2 sub-device configuration
709 * @fmt: V4L2 sub-device format need to be set
711 * Return: 0 if successful, error code otherwise.
713 static int imx412_get_pad_format(struct v4l2_subdev *sd,
714 struct v4l2_subdev_state *sd_state,
715 struct v4l2_subdev_format *fmt)
717 struct imx412 *imx412 = to_imx412(sd);
719 mutex_lock(&imx412->mutex);
721 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
722 struct v4l2_mbus_framefmt *framefmt;
724 framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
725 fmt->format = *framefmt;
727 imx412_fill_pad_format(imx412, imx412->cur_mode, fmt);
730 mutex_unlock(&imx412->mutex);
736 * imx412_set_pad_format() - Set subdevice pad format
737 * @sd: pointer to imx412 V4L2 sub-device structure
738 * @sd_state: V4L2 sub-device configuration
739 * @fmt: V4L2 sub-device format need to be set
741 * Return: 0 if successful, error code otherwise.
743 static int imx412_set_pad_format(struct v4l2_subdev *sd,
744 struct v4l2_subdev_state *sd_state,
745 struct v4l2_subdev_format *fmt)
747 struct imx412 *imx412 = to_imx412(sd);
748 const struct imx412_mode *mode;
751 mutex_lock(&imx412->mutex);
753 mode = &supported_mode;
754 imx412_fill_pad_format(imx412, mode, fmt);
756 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
757 struct v4l2_mbus_framefmt *framefmt;
759 framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
760 *framefmt = fmt->format;
762 ret = imx412_update_controls(imx412, mode);
764 imx412->cur_mode = mode;
767 mutex_unlock(&imx412->mutex);
773 * imx412_init_pad_cfg() - Initialize sub-device pad configuration
774 * @sd: pointer to imx412 V4L2 sub-device structure
775 * @sd_state: V4L2 sub-device configuration
777 * Return: 0 if successful, error code otherwise.
779 static int imx412_init_pad_cfg(struct v4l2_subdev *sd,
780 struct v4l2_subdev_state *sd_state)
782 struct imx412 *imx412 = to_imx412(sd);
783 struct v4l2_subdev_format fmt = { 0 };
785 fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
786 imx412_fill_pad_format(imx412, &supported_mode, &fmt);
788 return imx412_set_pad_format(sd, sd_state, &fmt);
792 * imx412_start_streaming() - Start sensor stream
793 * @imx412: pointer to imx412 device
795 * Return: 0 if successful, error code otherwise.
797 static int imx412_start_streaming(struct imx412 *imx412)
799 const struct imx412_reg_list *reg_list;
802 /* Write sensor mode registers */
803 reg_list = &imx412->cur_mode->reg_list;
804 ret = imx412_write_regs(imx412, reg_list->regs,
805 reg_list->num_of_regs);
807 dev_err(imx412->dev, "fail to write initial registers");
811 /* Setup handler will write actual exposure and gain */
812 ret = __v4l2_ctrl_handler_setup(imx412->sd.ctrl_handler);
814 dev_err(imx412->dev, "fail to setup handler");
818 /* Delay is required before streaming*/
819 usleep_range(7400, 8000);
821 /* Start streaming */
822 ret = imx412_write_reg(imx412, IMX412_REG_MODE_SELECT,
823 1, IMX412_MODE_STREAMING);
825 dev_err(imx412->dev, "fail to start streaming");
833 * imx412_stop_streaming() - Stop sensor stream
834 * @imx412: pointer to imx412 device
836 * Return: 0 if successful, error code otherwise.
838 static int imx412_stop_streaming(struct imx412 *imx412)
840 return imx412_write_reg(imx412, IMX412_REG_MODE_SELECT,
841 1, IMX412_MODE_STANDBY);
845 * imx412_set_stream() - Enable sensor streaming
846 * @sd: pointer to imx412 subdevice
847 * @enable: set to enable sensor streaming
849 * Return: 0 if successful, error code otherwise.
851 static int imx412_set_stream(struct v4l2_subdev *sd, int enable)
853 struct imx412 *imx412 = to_imx412(sd);
856 mutex_lock(&imx412->mutex);
859 ret = pm_runtime_resume_and_get(imx412->dev);
863 ret = imx412_start_streaming(imx412);
865 goto error_power_off;
867 imx412_stop_streaming(imx412);
868 pm_runtime_put(imx412->dev);
871 mutex_unlock(&imx412->mutex);
876 pm_runtime_put(imx412->dev);
878 mutex_unlock(&imx412->mutex);
884 * imx412_detect() - Detect imx412 sensor
885 * @imx412: pointer to imx412 device
887 * Return: 0 if successful, -EIO if sensor id does not match
889 static int imx412_detect(struct imx412 *imx412)
894 ret = imx412_read_reg(imx412, IMX412_REG_ID, 2, &val);
898 if (val != IMX412_ID) {
899 dev_err(imx412->dev, "chip id mismatch: %x!=%x",
908 * imx412_parse_hw_config() - Parse HW configuration and check if supported
909 * @imx412: pointer to imx412 device
911 * Return: 0 if successful, error code otherwise.
913 static int imx412_parse_hw_config(struct imx412 *imx412)
915 struct fwnode_handle *fwnode = dev_fwnode(imx412->dev);
916 struct v4l2_fwnode_endpoint bus_cfg = {
917 .bus_type = V4L2_MBUS_CSI2_DPHY
919 struct fwnode_handle *ep;
927 /* Request optional reset pin */
928 imx412->reset_gpio = devm_gpiod_get_optional(imx412->dev, "reset",
930 if (IS_ERR(imx412->reset_gpio)) {
931 dev_err(imx412->dev, "failed to get reset gpio %ld",
932 PTR_ERR(imx412->reset_gpio));
933 return PTR_ERR(imx412->reset_gpio);
936 /* Get sensor input clock */
937 imx412->inclk = devm_clk_get(imx412->dev, NULL);
938 if (IS_ERR(imx412->inclk)) {
939 dev_err(imx412->dev, "could not get inclk");
940 return PTR_ERR(imx412->inclk);
943 rate = clk_get_rate(imx412->inclk);
944 if (rate != IMX412_INCLK_RATE) {
945 dev_err(imx412->dev, "inclk frequency mismatch");
949 /* Get optional DT defined regulators */
950 for (i = 0; i < ARRAY_SIZE(imx412_supply_names); i++)
951 imx412->supplies[i].supply = imx412_supply_names[i];
953 ret = devm_regulator_bulk_get(imx412->dev,
954 ARRAY_SIZE(imx412_supply_names),
959 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
963 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
964 fwnode_handle_put(ep);
968 if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX412_NUM_DATA_LANES) {
970 "number of CSI2 data lanes %d is not supported",
971 bus_cfg.bus.mipi_csi2.num_data_lanes);
973 goto done_endpoint_free;
976 if (!bus_cfg.nr_of_link_frequencies) {
977 dev_err(imx412->dev, "no link frequencies defined");
979 goto done_endpoint_free;
982 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
983 if (bus_cfg.link_frequencies[i] == IMX412_LINK_FREQ)
984 goto done_endpoint_free;
989 v4l2_fwnode_endpoint_free(&bus_cfg);
994 /* V4l2 subdevice ops */
995 static const struct v4l2_subdev_video_ops imx412_video_ops = {
996 .s_stream = imx412_set_stream,
999 static const struct v4l2_subdev_pad_ops imx412_pad_ops = {
1000 .init_cfg = imx412_init_pad_cfg,
1001 .enum_mbus_code = imx412_enum_mbus_code,
1002 .enum_frame_size = imx412_enum_frame_size,
1003 .get_fmt = imx412_get_pad_format,
1004 .set_fmt = imx412_set_pad_format,
1007 static const struct v4l2_subdev_ops imx412_subdev_ops = {
1008 .video = &imx412_video_ops,
1009 .pad = &imx412_pad_ops,
1013 * imx412_power_on() - Sensor power on sequence
1014 * @dev: pointer to i2c device
1016 * Return: 0 if successful, error code otherwise.
1018 static int imx412_power_on(struct device *dev)
1020 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1021 struct imx412 *imx412 = to_imx412(sd);
1024 ret = regulator_bulk_enable(ARRAY_SIZE(imx412_supply_names),
1027 dev_err(dev, "failed to enable regulators\n");
1031 gpiod_set_value_cansleep(imx412->reset_gpio, 0);
1033 ret = clk_prepare_enable(imx412->inclk);
1035 dev_err(imx412->dev, "fail to enable inclk");
1039 usleep_range(1000, 1200);
1044 gpiod_set_value_cansleep(imx412->reset_gpio, 1);
1045 regulator_bulk_disable(ARRAY_SIZE(imx412_supply_names),
1052 * imx412_power_off() - Sensor power off sequence
1053 * @dev: pointer to i2c device
1055 * Return: 0 if successful, error code otherwise.
1057 static int imx412_power_off(struct device *dev)
1059 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1060 struct imx412 *imx412 = to_imx412(sd);
1062 clk_disable_unprepare(imx412->inclk);
1064 gpiod_set_value_cansleep(imx412->reset_gpio, 1);
1066 regulator_bulk_disable(ARRAY_SIZE(imx412_supply_names),
1073 * imx412_init_controls() - Initialize sensor subdevice controls
1074 * @imx412: pointer to imx412 device
1076 * Return: 0 if successful, error code otherwise.
1078 static int imx412_init_controls(struct imx412 *imx412)
1080 struct v4l2_ctrl_handler *ctrl_hdlr = &imx412->ctrl_handler;
1081 const struct imx412_mode *mode = imx412->cur_mode;
1085 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6);
1089 /* Serialize controls with sensor device */
1090 ctrl_hdlr->lock = &imx412->mutex;
1092 /* Initialize exposure and gain */
1093 lpfr = mode->vblank + mode->height;
1094 imx412->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1097 IMX412_EXPOSURE_MIN,
1098 lpfr - IMX412_EXPOSURE_OFFSET,
1099 IMX412_EXPOSURE_STEP,
1100 IMX412_EXPOSURE_DEFAULT);
1102 imx412->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1104 V4L2_CID_ANALOGUE_GAIN,
1108 IMX412_AGAIN_DEFAULT);
1110 v4l2_ctrl_cluster(2, &imx412->exp_ctrl);
1112 imx412->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1119 /* Read only controls */
1120 imx412->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1122 V4L2_CID_PIXEL_RATE,
1123 mode->pclk, mode->pclk,
1126 imx412->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr,
1129 ARRAY_SIZE(link_freq) -
1131 mode->link_freq_idx,
1133 if (imx412->link_freq_ctrl)
1134 imx412->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1136 imx412->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1142 if (imx412->hblank_ctrl)
1143 imx412->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1145 if (ctrl_hdlr->error) {
1146 dev_err(imx412->dev, "control init failed: %d",
1148 v4l2_ctrl_handler_free(ctrl_hdlr);
1149 return ctrl_hdlr->error;
1152 imx412->sd.ctrl_handler = ctrl_hdlr;
1158 * imx412_probe() - I2C client device binding
1159 * @client: pointer to i2c client device
1161 * Return: 0 if successful, error code otherwise.
1163 static int imx412_probe(struct i2c_client *client)
1165 struct imx412 *imx412;
1169 imx412 = devm_kzalloc(&client->dev, sizeof(*imx412), GFP_KERNEL);
1173 imx412->dev = &client->dev;
1174 name = device_get_match_data(&client->dev);
1178 /* Initialize subdev */
1179 v4l2_i2c_subdev_init(&imx412->sd, client, &imx412_subdev_ops);
1181 ret = imx412_parse_hw_config(imx412);
1183 dev_err(imx412->dev, "HW configuration is not supported");
1187 mutex_init(&imx412->mutex);
1189 ret = imx412_power_on(imx412->dev);
1191 dev_err(imx412->dev, "failed to power-on the sensor");
1192 goto error_mutex_destroy;
1195 /* Check module identity */
1196 ret = imx412_detect(imx412);
1198 dev_err(imx412->dev, "failed to find sensor: %d", ret);
1199 goto error_power_off;
1202 /* Set default mode to max resolution */
1203 imx412->cur_mode = &supported_mode;
1204 imx412->vblank = imx412->cur_mode->vblank;
1206 ret = imx412_init_controls(imx412);
1208 dev_err(imx412->dev, "failed to init controls: %d", ret);
1209 goto error_power_off;
1212 /* Initialize subdev */
1213 imx412->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1214 imx412->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1216 v4l2_i2c_subdev_set_name(&imx412->sd, client, name, NULL);
1218 /* Initialize source pad */
1219 imx412->pad.flags = MEDIA_PAD_FL_SOURCE;
1220 ret = media_entity_pads_init(&imx412->sd.entity, 1, &imx412->pad);
1222 dev_err(imx412->dev, "failed to init entity pads: %d", ret);
1223 goto error_handler_free;
1226 ret = v4l2_async_register_subdev_sensor(&imx412->sd);
1228 dev_err(imx412->dev,
1229 "failed to register async subdev: %d", ret);
1230 goto error_media_entity;
1233 pm_runtime_set_active(imx412->dev);
1234 pm_runtime_enable(imx412->dev);
1235 pm_runtime_idle(imx412->dev);
1240 media_entity_cleanup(&imx412->sd.entity);
1242 v4l2_ctrl_handler_free(imx412->sd.ctrl_handler);
1244 imx412_power_off(imx412->dev);
1245 error_mutex_destroy:
1246 mutex_destroy(&imx412->mutex);
1252 * imx412_remove() - I2C client device unbinding
1253 * @client: pointer to I2C client device
1255 * Return: 0 if successful, error code otherwise.
1257 static void imx412_remove(struct i2c_client *client)
1259 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1260 struct imx412 *imx412 = to_imx412(sd);
1262 v4l2_async_unregister_subdev(sd);
1263 media_entity_cleanup(&sd->entity);
1264 v4l2_ctrl_handler_free(sd->ctrl_handler);
1266 pm_runtime_disable(&client->dev);
1267 if (!pm_runtime_status_suspended(&client->dev))
1268 imx412_power_off(&client->dev);
1269 pm_runtime_set_suspended(&client->dev);
1271 mutex_destroy(&imx412->mutex);
1274 static const struct dev_pm_ops imx412_pm_ops = {
1275 SET_RUNTIME_PM_OPS(imx412_power_off, imx412_power_on, NULL)
1278 static const struct of_device_id imx412_of_match[] = {
1279 { .compatible = "sony,imx412", .data = "imx412" },
1280 { .compatible = "sony,imx577", .data = "imx577" },
1284 MODULE_DEVICE_TABLE(of, imx412_of_match);
1286 static struct i2c_driver imx412_driver = {
1287 .probe = imx412_probe,
1288 .remove = imx412_remove,
1291 .pm = &imx412_pm_ops,
1292 .of_match_table = imx412_of_match,
1296 module_i2c_driver(imx412_driver);
1298 MODULE_DESCRIPTION("Sony imx412 sensor driver");
1299 MODULE_LICENSE("GPL");