1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2021 Intel Corporation
4 #include <linux/acpi.h>
5 #include <linux/delay.h>
7 #include <linux/module.h>
8 #include <linux/pm_runtime.h>
9 #include <media/v4l2-ctrls.h>
10 #include <media/v4l2-device.h>
11 #include <asm/unaligned.h>
13 #define IMX208_REG_MODE_SELECT 0x0100
14 #define IMX208_MODE_STANDBY 0x00
15 #define IMX208_MODE_STREAMING 0x01
18 #define IMX208_REG_CHIP_ID 0x0000
19 #define IMX208_CHIP_ID 0x0208
21 /* V_TIMING internal */
22 #define IMX208_REG_VTS 0x0340
23 #define IMX208_VTS_60FPS 0x0472
24 #define IMX208_VTS_BINNING 0x0239
25 #define IMX208_VTS_60FPS_MIN 0x0458
26 #define IMX208_VTS_BINNING_MIN 0x0230
27 #define IMX208_VTS_MAX 0xffff
29 /* HBLANK control - read only */
30 #define IMX208_PPL_384MHZ 2248
31 #define IMX208_PPL_96MHZ 2248
33 /* Exposure control */
34 #define IMX208_REG_EXPOSURE 0x0202
35 #define IMX208_EXPOSURE_MIN 4
36 #define IMX208_EXPOSURE_STEP 1
37 #define IMX208_EXPOSURE_DEFAULT 0x190
38 #define IMX208_EXPOSURE_MAX 65535
40 /* Analog gain control */
41 #define IMX208_REG_ANALOG_GAIN 0x0204
42 #define IMX208_ANA_GAIN_MIN 0
43 #define IMX208_ANA_GAIN_MAX 0x00e0
44 #define IMX208_ANA_GAIN_STEP 1
45 #define IMX208_ANA_GAIN_DEFAULT 0x0
47 /* Digital gain control */
48 #define IMX208_REG_GR_DIGITAL_GAIN 0x020e
49 #define IMX208_REG_R_DIGITAL_GAIN 0x0210
50 #define IMX208_REG_B_DIGITAL_GAIN 0x0212
51 #define IMX208_REG_GB_DIGITAL_GAIN 0x0214
52 #define IMX208_DIGITAL_GAIN_SHIFT 8
55 #define IMX208_REG_ORIENTATION_CONTROL 0x0101
57 /* Test Pattern Control */
58 #define IMX208_REG_TEST_PATTERN_MODE 0x0600
59 #define IMX208_TEST_PATTERN_DISABLE 0x0
60 #define IMX208_TEST_PATTERN_SOLID_COLOR 0x1
61 #define IMX208_TEST_PATTERN_COLOR_BARS 0x2
62 #define IMX208_TEST_PATTERN_GREY_COLOR 0x3
63 #define IMX208_TEST_PATTERN_PN9 0x4
64 #define IMX208_TEST_PATTERN_FIX_1 0x100
65 #define IMX208_TEST_PATTERN_FIX_2 0x101
66 #define IMX208_TEST_PATTERN_FIX_3 0x102
67 #define IMX208_TEST_PATTERN_FIX_4 0x103
68 #define IMX208_TEST_PATTERN_FIX_5 0x104
69 #define IMX208_TEST_PATTERN_FIX_6 0x105
72 #define IMX208_OTP_BASE 0x3500
73 #define IMX208_OTP_SIZE 40
80 struct imx208_reg_list {
82 const struct imx208_reg *regs;
85 /* Link frequency config */
86 struct imx208_link_freq_config {
89 /* PLL registers for this link frequency */
90 struct imx208_reg_list reg_list;
93 /* Mode : resolution and related config&values */
104 /* Index of Link frequency config to be used */
106 /* Default register values */
107 struct imx208_reg_list reg_list;
110 static const struct imx208_reg pll_ctrl_reg[] = {
116 static const struct imx208_reg mode_1936x1096_60fps_regs[] = {
139 static const struct imx208_reg mode_968_548_60fps_regs[] = {
162 static const s64 imx208_discrete_digital_gain[] = {
166 static const char * const imx208_test_pattern_menu[] = {
170 "Fade to Grey Color Bar",
180 static const int imx208_test_pattern_val[] = {
181 IMX208_TEST_PATTERN_DISABLE,
182 IMX208_TEST_PATTERN_SOLID_COLOR,
183 IMX208_TEST_PATTERN_COLOR_BARS,
184 IMX208_TEST_PATTERN_GREY_COLOR,
185 IMX208_TEST_PATTERN_PN9,
186 IMX208_TEST_PATTERN_FIX_1,
187 IMX208_TEST_PATTERN_FIX_2,
188 IMX208_TEST_PATTERN_FIX_3,
189 IMX208_TEST_PATTERN_FIX_4,
190 IMX208_TEST_PATTERN_FIX_5,
191 IMX208_TEST_PATTERN_FIX_6,
194 /* Configurations for supported link frequencies */
195 #define IMX208_MHZ (1000 * 1000ULL)
196 #define IMX208_LINK_FREQ_384MHZ (384ULL * IMX208_MHZ)
197 #define IMX208_LINK_FREQ_96MHZ (96ULL * IMX208_MHZ)
199 #define IMX208_DATA_RATE_DOUBLE 2
200 #define IMX208_NUM_OF_LANES 2
201 #define IMX208_PIXEL_BITS 10
204 IMX208_LINK_FREQ_384MHZ_INDEX,
205 IMX208_LINK_FREQ_96MHZ_INDEX,
209 * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
210 * data rate => double data rate; number of lanes => 2; bits per pixel => 10
212 static u64 link_freq_to_pixel_rate(u64 f)
214 f *= IMX208_DATA_RATE_DOUBLE * IMX208_NUM_OF_LANES;
215 do_div(f, IMX208_PIXEL_BITS);
220 /* Menu items for LINK_FREQ V4L2 control */
221 static const s64 link_freq_menu_items[] = {
222 [IMX208_LINK_FREQ_384MHZ_INDEX] = IMX208_LINK_FREQ_384MHZ,
223 [IMX208_LINK_FREQ_96MHZ_INDEX] = IMX208_LINK_FREQ_96MHZ,
226 /* Link frequency configs */
227 static const struct imx208_link_freq_config link_freq_configs[] = {
228 [IMX208_LINK_FREQ_384MHZ_INDEX] = {
229 .pixels_per_line = IMX208_PPL_384MHZ,
231 .num_of_regs = ARRAY_SIZE(pll_ctrl_reg),
232 .regs = pll_ctrl_reg,
235 [IMX208_LINK_FREQ_96MHZ_INDEX] = {
236 .pixels_per_line = IMX208_PPL_96MHZ,
238 .num_of_regs = ARRAY_SIZE(pll_ctrl_reg),
239 .regs = pll_ctrl_reg,
245 static const struct imx208_mode supported_modes[] = {
249 .vts_def = IMX208_VTS_60FPS,
250 .vts_min = IMX208_VTS_60FPS_MIN,
252 .num_of_regs = ARRAY_SIZE(mode_1936x1096_60fps_regs),
253 .regs = mode_1936x1096_60fps_regs,
255 .link_freq_index = IMX208_LINK_FREQ_384MHZ_INDEX,
260 .vts_def = IMX208_VTS_BINNING,
261 .vts_min = IMX208_VTS_BINNING_MIN,
263 .num_of_regs = ARRAY_SIZE(mode_968_548_60fps_regs),
264 .regs = mode_968_548_60fps_regs,
266 .link_freq_index = IMX208_LINK_FREQ_96MHZ_INDEX,
271 struct v4l2_subdev sd;
272 struct media_pad pad;
274 struct v4l2_ctrl_handler ctrl_handler;
276 struct v4l2_ctrl *link_freq;
277 struct v4l2_ctrl *pixel_rate;
278 struct v4l2_ctrl *vblank;
279 struct v4l2_ctrl *hblank;
280 struct v4l2_ctrl *vflip;
281 struct v4l2_ctrl *hflip;
284 const struct imx208_mode *cur_mode;
287 * Mutex for serialized access:
288 * Protect sensor set pad format and start/stop streaming safely.
289 * Protect access to sensor v4l2 controls.
291 struct mutex imx208_mx;
295 char otp_data[IMX208_OTP_SIZE];
297 /* True if the device has been identified */
301 static inline struct imx208 *to_imx208(struct v4l2_subdev *_sd)
303 return container_of(_sd, struct imx208, sd);
306 /* Get bayer order based on flip setting. */
307 static u32 imx208_get_format_code(struct imx208 *imx208)
310 * Only one bayer order is supported.
311 * It depends on the flip settings.
313 static const u32 codes[2][2] = {
314 { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, },
315 { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, },
318 return codes[imx208->vflip->val][imx208->hflip->val];
321 /* Read registers up to 4 at a time */
322 static int imx208_read_reg(struct imx208 *imx208, u16 reg, u32 len, u32 *val)
324 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
325 struct i2c_msg msgs[2];
326 u8 addr_buf[2] = { reg >> 8, reg & 0xff };
327 u8 data_buf[4] = { 0, };
333 /* Write register address */
334 msgs[0].addr = client->addr;
336 msgs[0].len = ARRAY_SIZE(addr_buf);
337 msgs[0].buf = addr_buf;
339 /* Read data from register */
340 msgs[1].addr = client->addr;
341 msgs[1].flags = I2C_M_RD;
343 msgs[1].buf = &data_buf[4 - len];
345 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
346 if (ret != ARRAY_SIZE(msgs))
349 *val = get_unaligned_be32(data_buf);
354 /* Write registers up to 4 at a time */
355 static int imx208_write_reg(struct imx208 *imx208, u16 reg, u32 len, u32 val)
357 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
363 put_unaligned_be16(reg, buf);
364 put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
365 if (i2c_master_send(client, buf, len + 2) != len + 2)
371 /* Write a list of registers */
372 static int imx208_write_regs(struct imx208 *imx208,
373 const struct imx208_reg *regs, u32 len)
375 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
379 for (i = 0; i < len; i++) {
380 ret = imx208_write_reg(imx208, regs[i].address, 1,
383 dev_err_ratelimited(&client->dev,
384 "Failed to write reg 0x%4.4x. error = %d\n",
385 regs[i].address, ret);
394 /* Open sub-device */
395 static int imx208_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
397 struct v4l2_mbus_framefmt *try_fmt =
398 v4l2_subdev_get_try_format(sd, fh->state, 0);
400 /* Initialize try_fmt */
401 try_fmt->width = supported_modes[0].width;
402 try_fmt->height = supported_modes[0].height;
403 try_fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
404 try_fmt->field = V4L2_FIELD_NONE;
409 static int imx208_update_digital_gain(struct imx208 *imx208, u32 len, u32 val)
413 val = imx208_discrete_digital_gain[val] << IMX208_DIGITAL_GAIN_SHIFT;
415 ret = imx208_write_reg(imx208, IMX208_REG_GR_DIGITAL_GAIN, 2, val);
419 ret = imx208_write_reg(imx208, IMX208_REG_GB_DIGITAL_GAIN, 2, val);
423 ret = imx208_write_reg(imx208, IMX208_REG_R_DIGITAL_GAIN, 2, val);
427 return imx208_write_reg(imx208, IMX208_REG_B_DIGITAL_GAIN, 2, val);
430 static int imx208_set_ctrl(struct v4l2_ctrl *ctrl)
432 struct imx208 *imx208 =
433 container_of(ctrl->handler, struct imx208, ctrl_handler);
434 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
438 * Applying V4L2 control value only happens
439 * when power is up for streaming
441 if (!pm_runtime_get_if_in_use(&client->dev))
445 case V4L2_CID_ANALOGUE_GAIN:
446 ret = imx208_write_reg(imx208, IMX208_REG_ANALOG_GAIN,
449 case V4L2_CID_EXPOSURE:
450 ret = imx208_write_reg(imx208, IMX208_REG_EXPOSURE,
453 case V4L2_CID_DIGITAL_GAIN:
454 ret = imx208_update_digital_gain(imx208, 2, ctrl->val);
456 case V4L2_CID_VBLANK:
457 /* Update VTS that meets expected vertical blanking */
458 ret = imx208_write_reg(imx208, IMX208_REG_VTS, 2,
459 imx208->cur_mode->height + ctrl->val);
461 case V4L2_CID_TEST_PATTERN:
462 ret = imx208_write_reg(imx208, IMX208_REG_TEST_PATTERN_MODE,
463 2, imx208_test_pattern_val[ctrl->val]);
467 ret = imx208_write_reg(imx208, IMX208_REG_ORIENTATION_CONTROL,
470 imx208->vflip->val << 1);
474 dev_err(&client->dev,
475 "ctrl(id:0x%x,val:0x%x) is not handled\n",
476 ctrl->id, ctrl->val);
480 pm_runtime_put(&client->dev);
485 static const struct v4l2_ctrl_ops imx208_ctrl_ops = {
486 .s_ctrl = imx208_set_ctrl,
489 static const struct v4l2_ctrl_config imx208_digital_gain_control = {
490 .ops = &imx208_ctrl_ops,
491 .id = V4L2_CID_DIGITAL_GAIN,
492 .name = "Digital Gain",
493 .type = V4L2_CTRL_TYPE_INTEGER_MENU,
495 .max = ARRAY_SIZE(imx208_discrete_digital_gain) - 1,
499 .qmenu_int = imx208_discrete_digital_gain,
502 static int imx208_enum_mbus_code(struct v4l2_subdev *sd,
503 struct v4l2_subdev_state *sd_state,
504 struct v4l2_subdev_mbus_code_enum *code)
506 struct imx208 *imx208 = to_imx208(sd);
511 code->code = imx208_get_format_code(imx208);
516 static int imx208_enum_frame_size(struct v4l2_subdev *sd,
517 struct v4l2_subdev_state *sd_state,
518 struct v4l2_subdev_frame_size_enum *fse)
520 struct imx208 *imx208 = to_imx208(sd);
522 if (fse->index >= ARRAY_SIZE(supported_modes))
525 if (fse->code != imx208_get_format_code(imx208))
528 fse->min_width = supported_modes[fse->index].width;
529 fse->max_width = fse->min_width;
530 fse->min_height = supported_modes[fse->index].height;
531 fse->max_height = fse->min_height;
536 static void imx208_mode_to_pad_format(struct imx208 *imx208,
537 const struct imx208_mode *mode,
538 struct v4l2_subdev_format *fmt)
540 fmt->format.width = mode->width;
541 fmt->format.height = mode->height;
542 fmt->format.code = imx208_get_format_code(imx208);
543 fmt->format.field = V4L2_FIELD_NONE;
546 static int __imx208_get_pad_format(struct imx208 *imx208,
547 struct v4l2_subdev_state *sd_state,
548 struct v4l2_subdev_format *fmt)
550 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
551 fmt->format = *v4l2_subdev_get_try_format(&imx208->sd,
555 imx208_mode_to_pad_format(imx208, imx208->cur_mode, fmt);
560 static int imx208_get_pad_format(struct v4l2_subdev *sd,
561 struct v4l2_subdev_state *sd_state,
562 struct v4l2_subdev_format *fmt)
564 struct imx208 *imx208 = to_imx208(sd);
567 mutex_lock(&imx208->imx208_mx);
568 ret = __imx208_get_pad_format(imx208, sd_state, fmt);
569 mutex_unlock(&imx208->imx208_mx);
574 static int imx208_set_pad_format(struct v4l2_subdev *sd,
575 struct v4l2_subdev_state *sd_state,
576 struct v4l2_subdev_format *fmt)
578 struct imx208 *imx208 = to_imx208(sd);
579 const struct imx208_mode *mode;
586 mutex_lock(&imx208->imx208_mx);
588 fmt->format.code = imx208_get_format_code(imx208);
589 mode = v4l2_find_nearest_size(supported_modes,
590 ARRAY_SIZE(supported_modes), width, height,
591 fmt->format.width, fmt->format.height);
592 imx208_mode_to_pad_format(imx208, mode, fmt);
593 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
594 *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format;
596 imx208->cur_mode = mode;
597 __v4l2_ctrl_s_ctrl(imx208->link_freq, mode->link_freq_index);
598 link_freq = link_freq_menu_items[mode->link_freq_index];
599 pixel_rate = link_freq_to_pixel_rate(link_freq);
600 __v4l2_ctrl_s_ctrl_int64(imx208->pixel_rate, pixel_rate);
601 /* Update limits and set FPS to default */
602 vblank_def = imx208->cur_mode->vts_def -
603 imx208->cur_mode->height;
604 vblank_min = imx208->cur_mode->vts_min -
605 imx208->cur_mode->height;
606 __v4l2_ctrl_modify_range(imx208->vblank, vblank_min,
607 IMX208_VTS_MAX - imx208->cur_mode->height,
609 __v4l2_ctrl_s_ctrl(imx208->vblank, vblank_def);
611 link_freq_configs[mode->link_freq_index].pixels_per_line
612 - imx208->cur_mode->width;
613 __v4l2_ctrl_modify_range(imx208->hblank, h_blank,
614 h_blank, 1, h_blank);
617 mutex_unlock(&imx208->imx208_mx);
622 static int imx208_identify_module(struct imx208 *imx208)
624 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
628 if (imx208->identified)
631 ret = imx208_read_reg(imx208, IMX208_REG_CHIP_ID,
634 dev_err(&client->dev, "failed to read chip id %x\n",
639 if (val != IMX208_CHIP_ID) {
640 dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
641 IMX208_CHIP_ID, val);
645 imx208->identified = true;
650 /* Start streaming */
651 static int imx208_start_streaming(struct imx208 *imx208)
653 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
654 const struct imx208_reg_list *reg_list;
655 int ret, link_freq_index;
657 ret = imx208_identify_module(imx208);
662 link_freq_index = imx208->cur_mode->link_freq_index;
663 reg_list = &link_freq_configs[link_freq_index].reg_list;
664 ret = imx208_write_regs(imx208, reg_list->regs, reg_list->num_of_regs);
666 dev_err(&client->dev, "%s failed to set plls\n", __func__);
670 /* Apply default values of current mode */
671 reg_list = &imx208->cur_mode->reg_list;
672 ret = imx208_write_regs(imx208, reg_list->regs, reg_list->num_of_regs);
674 dev_err(&client->dev, "%s failed to set mode\n", __func__);
678 /* Apply customized values from user */
679 ret = __v4l2_ctrl_handler_setup(imx208->sd.ctrl_handler);
683 /* set stream on register */
684 return imx208_write_reg(imx208, IMX208_REG_MODE_SELECT,
685 1, IMX208_MODE_STREAMING);
689 static int imx208_stop_streaming(struct imx208 *imx208)
691 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
694 /* set stream off register */
695 ret = imx208_write_reg(imx208, IMX208_REG_MODE_SELECT,
696 1, IMX208_MODE_STANDBY);
698 dev_err(&client->dev, "%s failed to set stream\n", __func__);
701 * Return success even if it was an error, as there is nothing the
702 * caller can do about it.
707 static int imx208_set_stream(struct v4l2_subdev *sd, int enable)
709 struct imx208 *imx208 = to_imx208(sd);
710 struct i2c_client *client = v4l2_get_subdevdata(sd);
713 mutex_lock(&imx208->imx208_mx);
716 ret = pm_runtime_resume_and_get(&client->dev);
718 mutex_unlock(&imx208->imx208_mx);
723 * Apply default & customized values
724 * and then start streaming.
726 ret = imx208_start_streaming(imx208);
730 imx208_stop_streaming(imx208);
731 pm_runtime_put(&client->dev);
734 mutex_unlock(&imx208->imx208_mx);
736 /* vflip and hflip cannot change during streaming */
737 v4l2_ctrl_grab(imx208->vflip, enable);
738 v4l2_ctrl_grab(imx208->hflip, enable);
743 pm_runtime_put(&client->dev);
744 mutex_unlock(&imx208->imx208_mx);
750 static const struct v4l2_subdev_video_ops imx208_video_ops = {
751 .s_stream = imx208_set_stream,
754 static const struct v4l2_subdev_pad_ops imx208_pad_ops = {
755 .enum_mbus_code = imx208_enum_mbus_code,
756 .get_fmt = imx208_get_pad_format,
757 .set_fmt = imx208_set_pad_format,
758 .enum_frame_size = imx208_enum_frame_size,
761 static const struct v4l2_subdev_ops imx208_subdev_ops = {
762 .video = &imx208_video_ops,
763 .pad = &imx208_pad_ops,
766 static const struct v4l2_subdev_internal_ops imx208_internal_ops = {
770 static int imx208_read_otp(struct imx208 *imx208)
772 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
773 struct i2c_msg msgs[2];
774 u8 addr_buf[2] = { IMX208_OTP_BASE >> 8, IMX208_OTP_BASE & 0xff };
777 mutex_lock(&imx208->imx208_mx);
779 if (imx208->otp_read)
782 ret = pm_runtime_resume_and_get(&client->dev);
786 ret = imx208_identify_module(imx208);
790 /* Write register address */
791 msgs[0].addr = client->addr;
793 msgs[0].len = ARRAY_SIZE(addr_buf);
794 msgs[0].buf = addr_buf;
796 /* Read data from registers */
797 msgs[1].addr = client->addr;
798 msgs[1].flags = I2C_M_RD;
799 msgs[1].len = sizeof(imx208->otp_data);
800 msgs[1].buf = imx208->otp_data;
802 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
803 if (ret == ARRAY_SIZE(msgs)) {
804 imx208->otp_read = true;
809 pm_runtime_put(&client->dev);
812 mutex_unlock(&imx208->imx208_mx);
817 static ssize_t otp_read(struct file *filp, struct kobject *kobj,
818 struct bin_attribute *bin_attr,
819 char *buf, loff_t off, size_t count)
821 struct i2c_client *client = to_i2c_client(kobj_to_dev(kobj));
822 struct v4l2_subdev *sd = i2c_get_clientdata(client);
823 struct imx208 *imx208 = to_imx208(sd);
826 ret = imx208_read_otp(imx208);
830 memcpy(buf, &imx208->otp_data[off], count);
834 static const BIN_ATTR_RO(otp, IMX208_OTP_SIZE);
836 /* Initialize control handlers */
837 static int imx208_init_controls(struct imx208 *imx208)
839 struct i2c_client *client = v4l2_get_subdevdata(&imx208->sd);
840 struct v4l2_ctrl_handler *ctrl_hdlr = &imx208->ctrl_handler;
848 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
852 mutex_init(&imx208->imx208_mx);
853 ctrl_hdlr->lock = &imx208->imx208_mx;
855 v4l2_ctrl_new_int_menu(ctrl_hdlr,
858 ARRAY_SIZE(link_freq_menu_items) - 1,
859 0, link_freq_menu_items);
861 if (imx208->link_freq)
862 imx208->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
864 pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
866 link_freq_to_pixel_rate(link_freq_menu_items[ARRAY_SIZE(link_freq_menu_items) - 1]);
867 /* By default, PIXEL_RATE is read only */
868 imx208->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops,
870 pixel_rate_min, pixel_rate_max,
873 vblank_def = imx208->cur_mode->vts_def - imx208->cur_mode->height;
874 vblank_min = imx208->cur_mode->vts_min - imx208->cur_mode->height;
876 v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops, V4L2_CID_VBLANK,
878 IMX208_VTS_MAX - imx208->cur_mode->height, 1,
882 v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops, V4L2_CID_HBLANK,
883 IMX208_PPL_384MHZ - imx208->cur_mode->width,
884 IMX208_PPL_384MHZ - imx208->cur_mode->width,
886 IMX208_PPL_384MHZ - imx208->cur_mode->width);
889 imx208->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
891 exposure_max = imx208->cur_mode->vts_def - 8;
892 v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops, V4L2_CID_EXPOSURE,
893 IMX208_EXPOSURE_MIN, exposure_max,
894 IMX208_EXPOSURE_STEP, IMX208_EXPOSURE_DEFAULT);
896 imx208->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops,
897 V4L2_CID_HFLIP, 0, 1, 1, 0);
899 imx208->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
900 imx208->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops,
901 V4L2_CID_VFLIP, 0, 1, 1, 0);
903 imx208->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
905 v4l2_ctrl_new_std(ctrl_hdlr, &imx208_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
906 IMX208_ANA_GAIN_MIN, IMX208_ANA_GAIN_MAX,
907 IMX208_ANA_GAIN_STEP, IMX208_ANA_GAIN_DEFAULT);
909 v4l2_ctrl_new_custom(ctrl_hdlr, &imx208_digital_gain_control, NULL);
911 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx208_ctrl_ops,
912 V4L2_CID_TEST_PATTERN,
913 ARRAY_SIZE(imx208_test_pattern_menu) - 1,
914 0, 0, imx208_test_pattern_menu);
916 if (ctrl_hdlr->error) {
917 ret = ctrl_hdlr->error;
918 dev_err(&client->dev, "%s control init failed (%d)\n",
923 imx208->sd.ctrl_handler = ctrl_hdlr;
928 v4l2_ctrl_handler_free(ctrl_hdlr);
929 mutex_destroy(&imx208->imx208_mx);
934 static void imx208_free_controls(struct imx208 *imx208)
936 v4l2_ctrl_handler_free(imx208->sd.ctrl_handler);
939 static int imx208_probe(struct i2c_client *client)
941 struct imx208 *imx208;
946 device_property_read_u32(&client->dev, "clock-frequency", &val);
947 if (val != 19200000) {
948 dev_err(&client->dev,
949 "Unsupported clock-frequency %u. Expected 19200000.\n",
954 imx208 = devm_kzalloc(&client->dev, sizeof(*imx208), GFP_KERNEL);
958 /* Initialize subdev */
959 v4l2_i2c_subdev_init(&imx208->sd, client, &imx208_subdev_ops);
961 full_power = acpi_dev_state_d0(&client->dev);
963 /* Check module identity */
964 ret = imx208_identify_module(imx208);
966 dev_err(&client->dev, "failed to find sensor: %d", ret);
971 /* Set default mode to max resolution */
972 imx208->cur_mode = &supported_modes[0];
974 ret = imx208_init_controls(imx208);
976 dev_err(&client->dev, "failed to init controls: %d", ret);
980 /* Initialize subdev */
981 imx208->sd.internal_ops = &imx208_internal_ops;
982 imx208->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
983 imx208->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
985 /* Initialize source pad */
986 imx208->pad.flags = MEDIA_PAD_FL_SOURCE;
987 ret = media_entity_pads_init(&imx208->sd.entity, 1, &imx208->pad);
989 dev_err(&client->dev, "%s failed:%d\n", __func__, ret);
990 goto error_handler_free;
993 ret = v4l2_async_register_subdev_sensor(&imx208->sd);
995 goto error_media_entity;
997 ret = device_create_bin_file(&client->dev, &bin_attr_otp);
999 dev_err(&client->dev, "sysfs otp creation failed\n");
1000 goto error_async_subdev;
1003 /* Set the device's state to active if it's in D0 state. */
1005 pm_runtime_set_active(&client->dev);
1006 pm_runtime_enable(&client->dev);
1007 pm_runtime_idle(&client->dev);
1012 v4l2_async_unregister_subdev(&imx208->sd);
1015 media_entity_cleanup(&imx208->sd.entity);
1018 imx208_free_controls(imx208);
1021 mutex_destroy(&imx208->imx208_mx);
1026 static void imx208_remove(struct i2c_client *client)
1028 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1029 struct imx208 *imx208 = to_imx208(sd);
1031 device_remove_bin_file(&client->dev, &bin_attr_otp);
1032 v4l2_async_unregister_subdev(sd);
1033 media_entity_cleanup(&sd->entity);
1034 imx208_free_controls(imx208);
1036 pm_runtime_disable(&client->dev);
1037 pm_runtime_set_suspended(&client->dev);
1039 mutex_destroy(&imx208->imx208_mx);
1043 static const struct acpi_device_id imx208_acpi_ids[] = {
1048 MODULE_DEVICE_TABLE(acpi, imx208_acpi_ids);
1051 static struct i2c_driver imx208_i2c_driver = {
1054 .acpi_match_table = ACPI_PTR(imx208_acpi_ids),
1056 .probe = imx208_probe,
1057 .remove = imx208_remove,
1058 .flags = I2C_DRV_ACPI_WAIVE_D0_PROBE,
1061 module_i2c_driver(imx208_i2c_driver);
1063 MODULE_AUTHOR("Yeh, Andy <andy.yeh@intel.com>");
1064 MODULE_AUTHOR("Chen, Ping-chung <ping-chung.chen@intel.com>");
1065 MODULE_AUTHOR("Shawn Tu");
1066 MODULE_DESCRIPTION("Sony IMX208 sensor driver");
1067 MODULE_LICENSE("GPL v2");