1 // SPDX-License-Identifier: GPL-2.0
3 * Support for OmniVision OV2722 1080p HD camera sensor.
5 * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 #include <linux/module.h>
19 #include <linux/types.h>
20 #include <linux/kernel.h>
22 #include <linux/string.h>
23 #include <linux/errno.h>
24 #include <linux/init.h>
25 #include <linux/kmod.h>
26 #include <linux/device.h>
27 #include <linux/delay.h>
28 #include <linux/slab.h>
29 #include <linux/i2c.h>
30 #include <linux/moduleparam.h>
31 #include <media/v4l2-device.h>
32 #include "../include/linux/atomisp_gmin_platform.h"
33 #include <linux/acpi.h>
38 /* i2c read/write stuff */
39 static int ov2722_read_reg(struct i2c_client *client,
40 u16 data_length, u16 reg, u16 *val)
43 struct i2c_msg msg[2];
44 unsigned char data[6];
46 if (!client->adapter) {
47 dev_err(&client->dev, "%s error, no client->adapter\n",
52 if (data_length != OV2722_8BIT && data_length != OV2722_16BIT &&
53 data_length != OV2722_32BIT) {
54 dev_err(&client->dev, "%s error, invalid data length\n",
59 memset(msg, 0, sizeof(msg));
61 msg[0].addr = client->addr;
63 msg[0].len = I2C_MSG_LENGTH;
66 /* high byte goes out first */
67 data[0] = (u8)(reg >> 8);
68 data[1] = (u8)(reg & 0xff);
70 msg[1].addr = client->addr;
71 msg[1].len = data_length;
72 msg[1].flags = I2C_M_RD;
75 err = i2c_transfer(client->adapter, msg, 2);
80 "read from offset 0x%x error %d", reg, err);
85 /* high byte comes first */
86 if (data_length == OV2722_8BIT)
88 else if (data_length == OV2722_16BIT)
89 *val = be16_to_cpu(*(__be16 *)&data[0]);
91 *val = be32_to_cpu(*(__be32 *)&data[0]);
96 static int ov2722_i2c_write(struct i2c_client *client, u16 len, u8 *data)
99 const int num_msg = 1;
102 msg.addr = client->addr;
106 ret = i2c_transfer(client->adapter, &msg, 1);
108 return ret == num_msg ? 0 : -EIO;
111 static int ov2722_write_reg(struct i2c_client *client, u16 data_length,
115 unsigned char data[4] = {0};
116 __be16 *wreg = (__be16 *)data;
117 const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
119 if (data_length != OV2722_8BIT && data_length != OV2722_16BIT) {
120 dev_err(&client->dev,
121 "%s error, invalid data_length\n", __func__);
125 /* high byte goes out first */
126 *wreg = cpu_to_be16(reg);
128 if (data_length == OV2722_8BIT) {
132 __be16 *wdata = (__be16 *)&data[2];
134 *wdata = cpu_to_be16(val);
137 ret = ov2722_i2c_write(client, len, data);
139 dev_err(&client->dev,
140 "write error: wrote 0x%x to offset 0x%x error %d",
147 * ov2722_write_reg_array - Initializes a list of OV2722 registers
148 * @client: i2c driver client structure
149 * @reglist: list of registers to be written
151 * This function initializes a list of registers. When consecutive addresses
152 * are found in a row on the list, this function creates a buffer and sends
153 * consecutive data in a single i2c_transfer().
155 * __ov2722_flush_reg_array, __ov2722_buf_reg_array() and
156 * __ov2722_write_reg_is_consecutive() are internal functions to
157 * ov2722_write_reg_array_fast() and should be not used anywhere else.
161 static int __ov2722_flush_reg_array(struct i2c_client *client,
162 struct ov2722_write_ctrl *ctrl)
165 __be16 *data16 = (void *)&ctrl->buffer.addr;
167 if (ctrl->index == 0)
170 size = sizeof(u16) + ctrl->index; /* 16-bit address + data */
171 *data16 = cpu_to_be16(ctrl->buffer.addr);
174 return ov2722_i2c_write(client, size, (u8 *)&ctrl->buffer);
177 static int __ov2722_buf_reg_array(struct i2c_client *client,
178 struct ov2722_write_ctrl *ctrl,
179 const struct ov2722_reg *next)
184 switch (next->type) {
187 ctrl->buffer.data[ctrl->index] = (u8)next->val;
191 data16 = (void *)&ctrl->buffer.data[ctrl->index];
192 *data16 = cpu_to_be16((u16)next->val);
198 /* When first item is added, we need to store its starting address */
199 if (ctrl->index == 0)
200 ctrl->buffer.addr = next->reg;
205 * Buffer cannot guarantee free space for u32? Better flush it to avoid
206 * possible lack of memory for next item.
208 if (ctrl->index + sizeof(u16) >= OV2722_MAX_WRITE_BUF_SIZE)
209 return __ov2722_flush_reg_array(client, ctrl);
214 static int __ov2722_write_reg_is_consecutive(struct i2c_client *client,
215 struct ov2722_write_ctrl *ctrl,
216 const struct ov2722_reg *next)
218 if (ctrl->index == 0)
221 return ctrl->buffer.addr + ctrl->index == next->reg;
224 static int ov2722_write_reg_array(struct i2c_client *client,
225 const struct ov2722_reg *reglist)
227 const struct ov2722_reg *next = reglist;
228 struct ov2722_write_ctrl ctrl;
232 for (; next->type != OV2722_TOK_TERM; next++) {
233 switch (next->type & OV2722_TOK_MASK) {
234 case OV2722_TOK_DELAY:
235 err = __ov2722_flush_reg_array(client, &ctrl);
242 * If next address is not consecutive, data needs to be
243 * flushed before proceed.
245 if (!__ov2722_write_reg_is_consecutive(client, &ctrl,
247 err = __ov2722_flush_reg_array(client, &ctrl);
251 err = __ov2722_buf_reg_array(client, &ctrl, next);
253 dev_err(&client->dev, "%s: write error, aborted\n",
261 return __ov2722_flush_reg_array(client, &ctrl);
264 static int ov2722_g_focal(struct v4l2_subdev *sd, s32 *val)
266 *val = (OV2722_FOCAL_LENGTH_NUM << 16) | OV2722_FOCAL_LENGTH_DEM;
270 static int ov2722_g_fnumber(struct v4l2_subdev *sd, s32 *val)
272 /*const f number for imx*/
273 *val = (OV2722_F_NUMBER_DEFAULT_NUM << 16) | OV2722_F_NUMBER_DEM;
277 static int ov2722_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
279 *val = (OV2722_F_NUMBER_DEFAULT_NUM << 24) |
280 (OV2722_F_NUMBER_DEM << 16) |
281 (OV2722_F_NUMBER_DEFAULT_NUM << 8) | OV2722_F_NUMBER_DEM;
285 static int ov2722_get_intg_factor(struct i2c_client *client,
286 struct camera_mipi_info *info,
287 const struct ov2722_resolution *res)
289 struct v4l2_subdev *sd = i2c_get_clientdata(client);
290 struct ov2722_device *dev = NULL;
291 struct atomisp_sensor_mode_data *buf = &info->data;
292 const unsigned int ext_clk_freq_hz = 19200000;
293 const unsigned int pll_invariant_div = 10;
294 unsigned int pix_clk_freq_hz;
304 dev = to_ov2722_sensor(sd);
306 /* pixel clock calculattion */
307 ret = ov2722_read_reg(client, OV2722_8BIT,
308 OV2722_SC_CMMN_PLL_CTRL3, &pre_pll_clk_div);
312 ret = ov2722_read_reg(client, OV2722_8BIT,
313 OV2722_SC_CMMN_PLL_MULTIPLIER, &pll_multiplier);
317 ret = ov2722_read_reg(client, OV2722_8BIT,
318 OV2722_SC_CMMN_PLL_DEBUG_OPT, &op_pix_clk_div);
322 pre_pll_clk_div = (pre_pll_clk_div & 0x70) >> 4;
323 if (!pre_pll_clk_div)
326 pll_multiplier = pll_multiplier & 0x7f;
327 op_pix_clk_div = op_pix_clk_div & 0x03;
328 pix_clk_freq_hz = ext_clk_freq_hz / pre_pll_clk_div * pll_multiplier
329 * op_pix_clk_div / pll_invariant_div;
331 dev->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
332 buf->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
334 /* get integration time */
335 buf->coarse_integration_time_min = OV2722_COARSE_INTG_TIME_MIN;
336 buf->coarse_integration_time_max_margin =
337 OV2722_COARSE_INTG_TIME_MAX_MARGIN;
339 buf->fine_integration_time_min = OV2722_FINE_INTG_TIME_MIN;
340 buf->fine_integration_time_max_margin =
341 OV2722_FINE_INTG_TIME_MAX_MARGIN;
343 buf->fine_integration_time_def = OV2722_FINE_INTG_TIME_MIN;
344 buf->frame_length_lines = res->lines_per_frame;
345 buf->line_length_pck = res->pixels_per_line;
346 buf->read_mode = res->bin_mode;
348 /* get the cropping and output resolution to ISP for this mode. */
349 ret = ov2722_read_reg(client, OV2722_16BIT,
350 OV2722_H_CROP_START_H, ®_val);
353 buf->crop_horizontal_start = reg_val;
355 ret = ov2722_read_reg(client, OV2722_16BIT,
356 OV2722_V_CROP_START_H, ®_val);
359 buf->crop_vertical_start = reg_val;
361 ret = ov2722_read_reg(client, OV2722_16BIT,
362 OV2722_H_CROP_END_H, ®_val);
365 buf->crop_horizontal_end = reg_val;
367 ret = ov2722_read_reg(client, OV2722_16BIT,
368 OV2722_V_CROP_END_H, ®_val);
371 buf->crop_vertical_end = reg_val;
373 ret = ov2722_read_reg(client, OV2722_16BIT,
374 OV2722_H_OUTSIZE_H, ®_val);
377 buf->output_width = reg_val;
379 ret = ov2722_read_reg(client, OV2722_16BIT,
380 OV2722_V_OUTSIZE_H, ®_val);
383 buf->output_height = reg_val;
385 buf->binning_factor_x = res->bin_factor_x ?
386 res->bin_factor_x : 1;
387 buf->binning_factor_y = res->bin_factor_y ?
388 res->bin_factor_y : 1;
392 static long __ov2722_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
393 int gain, int digitgain)
396 struct i2c_client *client = v4l2_get_subdevdata(sd);
397 struct ov2722_device *dev = to_ov2722_sensor(sd);
401 dev_dbg(&client->dev, "set_exposure without group hold\n");
403 /* clear VTS_DIFF on manual mode */
404 ret = ov2722_write_reg(client, OV2722_16BIT, OV2722_VTS_DIFF_H, 0);
408 hts = dev->pixels_per_line;
409 vts = dev->lines_per_frame;
411 if ((coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN) > vts)
412 vts = coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN;
417 ret = ov2722_write_reg(client, OV2722_16BIT,
422 ret = ov2722_write_reg(client, OV2722_16BIT,
428 ret = ov2722_write_reg(client, OV2722_8BIT,
429 OV2722_AEC_PK_EXPO_L,
434 ret = ov2722_write_reg(client, OV2722_16BIT,
435 OV2722_AEC_PK_EXPO_H,
436 (coarse_itg >> 8) & 0xfff);
440 /* set analog gain */
441 ret = ov2722_write_reg(client, OV2722_16BIT,
442 OV2722_AGC_ADJ_H, gain);
446 /* set digital gain */
447 ret = ov2722_write_reg(client, OV2722_16BIT,
448 OV2722_MWB_GAIN_R_H, digitgain);
452 ret = ov2722_write_reg(client, OV2722_16BIT,
453 OV2722_MWB_GAIN_G_H, digitgain);
457 ret = ov2722_write_reg(client, OV2722_16BIT,
458 OV2722_MWB_GAIN_B_H, digitgain);
463 static int ov2722_set_exposure(struct v4l2_subdev *sd, int exposure,
464 int gain, int digitgain)
466 struct ov2722_device *dev = to_ov2722_sensor(sd);
469 mutex_lock(&dev->input_lock);
470 ret = __ov2722_set_exposure(sd, exposure, gain, digitgain);
471 mutex_unlock(&dev->input_lock);
476 static long ov2722_s_exposure(struct v4l2_subdev *sd,
477 struct atomisp_exposure *exposure)
479 int exp = exposure->integration_time[0];
480 int gain = exposure->gain[0];
481 int digitgain = exposure->gain[1];
483 /* we should not accept the invalid value below. */
485 struct i2c_client *client = v4l2_get_subdevdata(sd);
487 v4l2_err(client, "%s: invalid value\n", __func__);
491 return ov2722_set_exposure(sd, exp, gain, digitgain);
494 static long ov2722_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
497 case ATOMISP_IOC_S_EXPOSURE:
498 return ov2722_s_exposure(sd, arg);
505 /* This returns the exposure time being used. This should only be used
506 * for filling in EXIF data, not for actual image processing.
508 static int ov2722_q_exposure(struct v4l2_subdev *sd, s32 *value)
510 struct i2c_client *client = v4l2_get_subdevdata(sd);
515 ret = ov2722_read_reg(client, OV2722_8BIT,
516 OV2722_AEC_PK_EXPO_L,
521 ret = ov2722_read_reg(client, OV2722_8BIT,
522 OV2722_AEC_PK_EXPO_M,
527 reg_v += reg_v2 << 8;
528 ret = ov2722_read_reg(client, OV2722_8BIT,
529 OV2722_AEC_PK_EXPO_H,
534 *value = reg_v + (((u32)reg_v2 << 16));
539 static int ov2722_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
541 struct ov2722_device *dev =
542 container_of(ctrl->handler, struct ov2722_device, ctrl_handler);
547 case V4L2_CID_EXPOSURE_ABSOLUTE:
548 ret = ov2722_q_exposure(&dev->sd, &ctrl->val);
550 case V4L2_CID_FOCAL_ABSOLUTE:
551 ret = ov2722_g_focal(&dev->sd, &ctrl->val);
553 case V4L2_CID_FNUMBER_ABSOLUTE:
554 ret = ov2722_g_fnumber(&dev->sd, &ctrl->val);
556 case V4L2_CID_FNUMBER_RANGE:
557 ret = ov2722_g_fnumber_range(&dev->sd, &ctrl->val);
559 case V4L2_CID_LINK_FREQ:
560 val = ov2722_res[dev->fmt_idx].mipi_freq;
564 ctrl->val = val * 1000; /* To Hz */
573 static const struct v4l2_ctrl_ops ctrl_ops = {
574 .g_volatile_ctrl = ov2722_g_volatile_ctrl
577 static const struct v4l2_ctrl_config ov2722_controls[] = {
580 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
581 .type = V4L2_CTRL_TYPE_INTEGER,
591 .id = V4L2_CID_FOCAL_ABSOLUTE,
592 .type = V4L2_CTRL_TYPE_INTEGER,
593 .name = "focal length",
594 .min = OV2722_FOCAL_LENGTH_DEFAULT,
595 .max = OV2722_FOCAL_LENGTH_DEFAULT,
597 .def = OV2722_FOCAL_LENGTH_DEFAULT,
602 .id = V4L2_CID_FNUMBER_ABSOLUTE,
603 .type = V4L2_CTRL_TYPE_INTEGER,
605 .min = OV2722_F_NUMBER_DEFAULT,
606 .max = OV2722_F_NUMBER_DEFAULT,
608 .def = OV2722_F_NUMBER_DEFAULT,
613 .id = V4L2_CID_FNUMBER_RANGE,
614 .type = V4L2_CTRL_TYPE_INTEGER,
615 .name = "f-number range",
616 .min = OV2722_F_NUMBER_RANGE,
617 .max = OV2722_F_NUMBER_RANGE,
619 .def = OV2722_F_NUMBER_RANGE,
624 .id = V4L2_CID_LINK_FREQ,
625 .name = "Link Frequency",
626 .type = V4L2_CTRL_TYPE_INTEGER,
628 .max = 1500000 * 1000,
631 .flags = V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY,
635 static int ov2722_init(struct v4l2_subdev *sd)
637 struct ov2722_device *dev = to_ov2722_sensor(sd);
639 mutex_lock(&dev->input_lock);
641 /* restore settings */
642 ov2722_res = ov2722_res_preview;
643 N_RES = N_RES_PREVIEW;
645 mutex_unlock(&dev->input_lock);
650 static int power_ctrl(struct v4l2_subdev *sd, bool flag)
653 struct ov2722_device *dev = to_ov2722_sensor(sd);
655 if (!dev || !dev->platform_data)
659 ret = dev->platform_data->v1p8_ctrl(sd, 1);
661 ret = dev->platform_data->v2p8_ctrl(sd, 1);
663 dev->platform_data->v1p8_ctrl(sd, 0);
666 ret = dev->platform_data->v1p8_ctrl(sd, 0);
667 ret |= dev->platform_data->v2p8_ctrl(sd, 0);
673 static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
675 struct ov2722_device *dev = to_ov2722_sensor(sd);
678 if (!dev || !dev->platform_data)
681 /* Note: the GPIO order is asymmetric: always RESET#
682 * before PWDN# when turning it on or off.
684 ret = dev->platform_data->gpio0_ctrl(sd, flag);
686 *ov2722 PWDN# active high when pull down,opposite to the convention
688 ret |= dev->platform_data->gpio1_ctrl(sd, !flag);
692 static int power_up(struct v4l2_subdev *sd)
694 struct ov2722_device *dev = to_ov2722_sensor(sd);
695 struct i2c_client *client = v4l2_get_subdevdata(sd);
698 if (!dev->platform_data) {
699 dev_err(&client->dev,
700 "no camera_sensor_platform_data");
705 ret = power_ctrl(sd, 1);
709 /* according to DS, at least 5ms is needed between DOVDD and PWDN */
710 usleep_range(5000, 6000);
713 ret = gpio_ctrl(sd, 1);
715 ret = gpio_ctrl(sd, 0);
720 /* flis clock control */
721 ret = dev->platform_data->flisclk_ctrl(sd, 1);
725 /* according to DS, 20ms is needed between PWDN and i2c access */
734 dev_err(&client->dev, "sensor power-up failed\n");
739 static int power_down(struct v4l2_subdev *sd)
741 struct ov2722_device *dev = to_ov2722_sensor(sd);
742 struct i2c_client *client = v4l2_get_subdevdata(sd);
745 if (!dev->platform_data) {
746 dev_err(&client->dev,
747 "no camera_sensor_platform_data");
751 ret = dev->platform_data->flisclk_ctrl(sd, 0);
753 dev_err(&client->dev, "flisclk failed\n");
756 ret = gpio_ctrl(sd, 0);
758 ret = gpio_ctrl(sd, 0);
760 dev_err(&client->dev, "gpio failed 2\n");
764 ret = power_ctrl(sd, 0);
766 dev_err(&client->dev, "vprog failed.\n");
771 static int ov2722_s_power(struct v4l2_subdev *sd, int on)
776 return power_down(sd);
780 return ov2722_init(sd);
786 * distance - calculate the distance
791 * Get the gap between resolution and w/h.
792 * res->width/height smaller than w/h wouldn't be considered.
793 * Returns the value of gap or -1 if fail.
795 #define LARGEST_ALLOWED_RATIO_MISMATCH 800
796 static int distance(struct ov2722_resolution *res, u32 w, u32 h)
798 unsigned int w_ratio = (res->width << 13) / w;
799 unsigned int h_ratio;
804 h_ratio = (res->height << 13) / h;
807 match = abs(((w_ratio << 13) / h_ratio) - 8192);
809 if ((w_ratio < 8192) || (h_ratio < 8192) ||
810 (match > LARGEST_ALLOWED_RATIO_MISMATCH))
813 return w_ratio + h_ratio;
816 /* Return the nearest higher resolution index */
817 static int nearest_resolution_index(int w, int h)
822 int min_dist = INT_MAX;
823 struct ov2722_resolution *tmp_res = NULL;
825 for (i = 0; i < N_RES; i++) {
826 tmp_res = &ov2722_res[i];
827 dist = distance(tmp_res, w, h);
830 if (dist < min_dist) {
839 static int get_resolution_index(int w, int h)
843 for (i = 0; i < N_RES; i++) {
844 if (w != ov2722_res[i].width)
846 if (h != ov2722_res[i].height)
855 /* TODO: remove it. */
856 static int startup(struct v4l2_subdev *sd)
858 struct ov2722_device *dev = to_ov2722_sensor(sd);
859 struct i2c_client *client = v4l2_get_subdevdata(sd);
862 ret = ov2722_write_reg(client, OV2722_8BIT,
863 OV2722_SW_RESET, 0x01);
865 dev_err(&client->dev, "ov2722 reset err.\n");
869 ret = ov2722_write_reg_array(client, ov2722_res[dev->fmt_idx].regs);
871 dev_err(&client->dev, "ov2722 write register err.\n");
878 static int ov2722_set_fmt(struct v4l2_subdev *sd,
879 struct v4l2_subdev_state *sd_state,
880 struct v4l2_subdev_format *format)
882 struct v4l2_mbus_framefmt *fmt = &format->format;
883 struct ov2722_device *dev = to_ov2722_sensor(sd);
884 struct i2c_client *client = v4l2_get_subdevdata(sd);
885 struct camera_mipi_info *ov2722_info = NULL;
893 ov2722_info = v4l2_get_subdev_hostdata(sd);
897 mutex_lock(&dev->input_lock);
898 idx = nearest_resolution_index(fmt->width, fmt->height);
900 /* return the largest resolution */
901 fmt->width = ov2722_res[N_RES - 1].width;
902 fmt->height = ov2722_res[N_RES - 1].height;
904 fmt->width = ov2722_res[idx].width;
905 fmt->height = ov2722_res[idx].height;
907 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
908 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
909 sd_state->pads->try_fmt = *fmt;
910 mutex_unlock(&dev->input_lock);
914 dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
915 if (dev->fmt_idx == -1) {
916 dev_err(&client->dev, "get resolution fail\n");
917 mutex_unlock(&dev->input_lock);
921 dev->pixels_per_line = ov2722_res[dev->fmt_idx].pixels_per_line;
922 dev->lines_per_frame = ov2722_res[dev->fmt_idx].lines_per_frame;
928 dev_err(&client->dev, "ov2722 startup err, retry to power up\n");
929 for (i = 0; i < OV2722_POWER_UP_RETRY_NUM; i++) {
930 dev_err(&client->dev,
931 "ov2722 retry to power up %d/%d times, result: ",
932 i + 1, OV2722_POWER_UP_RETRY_NUM);
936 dev_err(&client->dev, "power up failed, continue\n");
941 dev_err(&client->dev, " startup FAILED!\n");
943 dev_err(&client->dev, " startup SUCCESS!\n");
948 dev_err(&client->dev, "ov2722 startup err\n");
953 ret = ov2722_get_intg_factor(client, ov2722_info,
954 &ov2722_res[dev->fmt_idx]);
956 dev_err(&client->dev, "failed to get integration_factor\n");
959 mutex_unlock(&dev->input_lock);
963 static int ov2722_get_fmt(struct v4l2_subdev *sd,
964 struct v4l2_subdev_state *sd_state,
965 struct v4l2_subdev_format *format)
967 struct v4l2_mbus_framefmt *fmt = &format->format;
968 struct ov2722_device *dev = to_ov2722_sensor(sd);
975 fmt->width = ov2722_res[dev->fmt_idx].width;
976 fmt->height = ov2722_res[dev->fmt_idx].height;
977 fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
982 static int ov2722_detect(struct i2c_client *client)
984 struct i2c_adapter *adapter = client->adapter;
990 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
993 ret = ov2722_read_reg(client, OV2722_8BIT,
994 OV2722_SC_CMMN_CHIP_ID_H, &high);
996 dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
999 ret = ov2722_read_reg(client, OV2722_8BIT,
1000 OV2722_SC_CMMN_CHIP_ID_L, &low);
1001 id = (high << 8) | low;
1003 if ((id != OV2722_ID) && (id != OV2720_ID)) {
1004 dev_err(&client->dev, "sensor ID error\n");
1008 ret = ov2722_read_reg(client, OV2722_8BIT,
1009 OV2722_SC_CMMN_SUB_ID, &high);
1010 revision = (u8)high & 0x0f;
1012 dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision);
1013 dev_dbg(&client->dev, "detect ov2722 success\n");
1017 static int ov2722_s_stream(struct v4l2_subdev *sd, int enable)
1019 struct ov2722_device *dev = to_ov2722_sensor(sd);
1020 struct i2c_client *client = v4l2_get_subdevdata(sd);
1023 mutex_lock(&dev->input_lock);
1025 ret = ov2722_write_reg(client, OV2722_8BIT, OV2722_SW_STREAM,
1026 enable ? OV2722_START_STREAMING :
1027 OV2722_STOP_STREAMING);
1029 mutex_unlock(&dev->input_lock);
1033 static int ov2722_s_config(struct v4l2_subdev *sd,
1034 int irq, void *platform_data)
1036 struct ov2722_device *dev = to_ov2722_sensor(sd);
1037 struct i2c_client *client = v4l2_get_subdevdata(sd);
1043 dev->platform_data =
1044 (struct camera_sensor_platform_data *)platform_data;
1046 mutex_lock(&dev->input_lock);
1048 /* power off the module, then power on it in future
1049 * as first power on by board may not fulfill the
1050 * power on sequqence needed by the module
1052 ret = power_down(sd);
1054 dev_err(&client->dev, "ov2722 power-off err.\n");
1055 goto fail_power_off;
1060 dev_err(&client->dev, "ov2722 power-up err.\n");
1064 ret = dev->platform_data->csi_cfg(sd, 1);
1068 /* config & detect sensor */
1069 ret = ov2722_detect(client);
1071 dev_err(&client->dev, "ov2722_detect err s_config.\n");
1075 /* turn off sensor, after probed */
1076 ret = power_down(sd);
1078 dev_err(&client->dev, "ov2722 power-off err.\n");
1081 mutex_unlock(&dev->input_lock);
1086 dev->platform_data->csi_cfg(sd, 0);
1089 dev_err(&client->dev, "sensor power-gating failed\n");
1091 mutex_unlock(&dev->input_lock);
1095 static int ov2722_g_frame_interval(struct v4l2_subdev *sd,
1096 struct v4l2_subdev_frame_interval *interval)
1098 struct ov2722_device *dev = to_ov2722_sensor(sd);
1100 interval->interval.numerator = 1;
1101 interval->interval.denominator = ov2722_res[dev->fmt_idx].fps;
1106 static int ov2722_enum_mbus_code(struct v4l2_subdev *sd,
1107 struct v4l2_subdev_state *sd_state,
1108 struct v4l2_subdev_mbus_code_enum *code)
1110 if (code->index >= MAX_FMTS)
1113 code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1117 static int ov2722_enum_frame_size(struct v4l2_subdev *sd,
1118 struct v4l2_subdev_state *sd_state,
1119 struct v4l2_subdev_frame_size_enum *fse)
1121 int index = fse->index;
1126 fse->min_width = ov2722_res[index].width;
1127 fse->min_height = ov2722_res[index].height;
1128 fse->max_width = ov2722_res[index].width;
1129 fse->max_height = ov2722_res[index].height;
1134 static int ov2722_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1136 struct ov2722_device *dev = to_ov2722_sensor(sd);
1138 mutex_lock(&dev->input_lock);
1139 *frames = ov2722_res[dev->fmt_idx].skip_frames;
1140 mutex_unlock(&dev->input_lock);
1145 static const struct v4l2_subdev_sensor_ops ov2722_sensor_ops = {
1146 .g_skip_frames = ov2722_g_skip_frames,
1149 static const struct v4l2_subdev_video_ops ov2722_video_ops = {
1150 .s_stream = ov2722_s_stream,
1151 .g_frame_interval = ov2722_g_frame_interval,
1154 static const struct v4l2_subdev_core_ops ov2722_core_ops = {
1155 .s_power = ov2722_s_power,
1156 .ioctl = ov2722_ioctl,
1159 static const struct v4l2_subdev_pad_ops ov2722_pad_ops = {
1160 .enum_mbus_code = ov2722_enum_mbus_code,
1161 .enum_frame_size = ov2722_enum_frame_size,
1162 .get_fmt = ov2722_get_fmt,
1163 .set_fmt = ov2722_set_fmt,
1166 static const struct v4l2_subdev_ops ov2722_ops = {
1167 .core = &ov2722_core_ops,
1168 .video = &ov2722_video_ops,
1169 .pad = &ov2722_pad_ops,
1170 .sensor = &ov2722_sensor_ops,
1173 static int ov2722_remove(struct i2c_client *client)
1175 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1176 struct ov2722_device *dev = to_ov2722_sensor(sd);
1178 dev->platform_data->csi_cfg(sd, 0);
1179 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1180 v4l2_device_unregister_subdev(sd);
1182 atomisp_gmin_remove_subdev(sd);
1184 media_entity_cleanup(&dev->sd.entity);
1190 static int __ov2722_init_ctrl_handler(struct ov2722_device *dev)
1192 struct v4l2_ctrl_handler *hdl;
1195 hdl = &dev->ctrl_handler;
1196 v4l2_ctrl_handler_init(&dev->ctrl_handler, ARRAY_SIZE(ov2722_controls));
1197 for (i = 0; i < ARRAY_SIZE(ov2722_controls); i++)
1198 v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov2722_controls[i],
1201 dev->link_freq = v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_LINK_FREQ);
1203 if (dev->ctrl_handler.error || !dev->link_freq)
1204 return dev->ctrl_handler.error;
1206 dev->sd.ctrl_handler = hdl;
1211 static int ov2722_probe(struct i2c_client *client)
1213 struct ov2722_device *dev;
1217 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1221 mutex_init(&dev->input_lock);
1224 v4l2_i2c_subdev_init(&dev->sd, client, &ov2722_ops);
1226 ovpdev = gmin_camera_platform_data(&dev->sd,
1227 ATOMISP_INPUT_FORMAT_RAW_10,
1228 atomisp_bayer_order_grbg);
1230 ret = ov2722_s_config(&dev->sd, client->irq, ovpdev);
1234 ret = __ov2722_init_ctrl_handler(dev);
1236 goto out_ctrl_handler_free;
1238 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1239 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1240 dev->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
1241 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1243 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1245 ov2722_remove(client);
1247 return atomisp_register_i2c_module(&dev->sd, ovpdev, RAW_CAMERA);
1249 out_ctrl_handler_free:
1250 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1253 v4l2_device_unregister_subdev(&dev->sd);
1258 static const struct acpi_device_id ov2722_acpi_match[] = {
1262 MODULE_DEVICE_TABLE(acpi, ov2722_acpi_match);
1264 static struct i2c_driver ov2722_driver = {
1267 .acpi_match_table = ov2722_acpi_match,
1269 .probe_new = ov2722_probe,
1270 .remove = ov2722_remove,
1272 module_i2c_driver(ov2722_driver);
1274 MODULE_AUTHOR("Wei Liu <wei.liu@intel.com>");
1275 MODULE_DESCRIPTION("A low-level driver for OmniVision 2722 sensors");
1276 MODULE_LICENSE("GPL");