+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Support for OmniVision OV2680 1080p HD camera sensor.
- *
- * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
- * Copyright (c) 2023 Hans de Goede <hdegoede@redhat.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/acpi.h>
-#include <linux/device.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio/machine.h>
-#include <linux/i2c.h>
-#include <linux/module.h>
-#include <linux/pm_runtime.h>
-#include <linux/regmap.h>
-#include <linux/types.h>
-
-#include <media/v4l2-device.h>
-
-#include "ov2680.h"
-
-#define OV2680_CHIP_ID 0x2680
-
-#define OV2680_REG_STREAM_CTRL CCI_REG8(0x0100)
-#define OV2680_REG_SOFT_RESET CCI_REG8(0x0103)
-
-#define OV2680_REG_CHIP_ID CCI_REG16(0x300a)
-#define OV2680_REG_SC_CMMN_SUB_ID CCI_REG8(0x302a)
-
-#define OV2680_REG_EXPOSURE_PK CCI_REG24(0x3500)
-#define OV2680_REG_R_MANUAL CCI_REG8(0x3503)
-#define OV2680_REG_GAIN_PK CCI_REG16(0x350a)
-
-#define OV2680_REG_SENSOR_CTRL_0A CCI_REG8(0x370a)
-
-#define OV2680_REG_HORIZONTAL_START CCI_REG16(0x3800)
-#define OV2680_REG_VERTICAL_START CCI_REG16(0x3802)
-#define OV2680_REG_HORIZONTAL_END CCI_REG16(0x3804)
-#define OV2680_REG_VERTICAL_END CCI_REG16(0x3806)
-#define OV2680_REG_HORIZONTAL_OUTPUT_SIZE CCI_REG16(0x3808)
-#define OV2680_REG_VERTICAL_OUTPUT_SIZE CCI_REG16(0x380a)
-#define OV2680_REG_TIMING_HTS CCI_REG16(0x380c)
-#define OV2680_REG_TIMING_VTS CCI_REG16(0x380e)
-#define OV2680_REG_ISP_X_WIN CCI_REG16(0x3810)
-#define OV2680_REG_ISP_Y_WIN CCI_REG16(0x3812)
-#define OV2680_REG_X_INC CCI_REG8(0x3814)
-#define OV2680_REG_Y_INC CCI_REG8(0x3815)
-#define OV2680_REG_FORMAT1 CCI_REG8(0x3820)
-#define OV2680_REG_FORMAT2 CCI_REG8(0x3821)
-
-#define OV2680_REG_ISP_CTRL00 CCI_REG8(0x5080)
-
-#define OV2680_REG_X_WIN CCI_REG16(0x5704)
-#define OV2680_REG_Y_WIN CCI_REG16(0x5706)
-
-#define OV2680_FRAME_RATE 30
-#define OV2680_INTEGRATION_TIME_MARGIN 8
-
-static const struct v4l2_rect ov2680_default_crop = {
- .left = OV2680_ACTIVE_START_LEFT,
- .top = OV2680_ACTIVE_START_TOP,
- .width = OV2680_ACTIVE_WIDTH,
- .height = OV2680_ACTIVE_HEIGHT,
-};
-
-static void ov2680_set_bayer_order(struct ov2680_dev *sensor, struct v4l2_mbus_framefmt *fmt)
-{
- static const int ov2680_hv_flip_bayer_order[] = {
- MEDIA_BUS_FMT_SBGGR10_1X10,
- MEDIA_BUS_FMT_SGRBG10_1X10,
- MEDIA_BUS_FMT_SGBRG10_1X10,
- MEDIA_BUS_FMT_SRGGB10_1X10,
- };
- int hv_flip = 0;
-
- if (sensor->ctrls.vflip->val)
- hv_flip += 1;
-
- if (sensor->ctrls.hflip->val)
- hv_flip += 2;
-
- fmt->code = ov2680_hv_flip_bayer_order[hv_flip];
-}
-
-static int ov2680_set_vflip(struct ov2680_dev *sensor, s32 val)
-{
- int ret;
-
- if (sensor->is_streaming)
- return -EBUSY;
-
- ret = cci_update_bits(sensor->regmap, OV2680_REG_FORMAT1, BIT(2),
- val ? BIT(2) : 0, NULL);
- if (ret < 0)
- return ret;
-
- ov2680_set_bayer_order(sensor, &sensor->mode.fmt);
- return 0;
-}
-
-static int ov2680_set_hflip(struct ov2680_dev *sensor, s32 val)
-{
- int ret;
-
- if (sensor->is_streaming)
- return -EBUSY;
-
- ret = cci_update_bits(sensor->regmap, OV2680_REG_FORMAT2, BIT(2),
- val ? BIT(2) : 0, NULL);
- if (ret < 0)
- return ret;
-
- ov2680_set_bayer_order(sensor, &sensor->mode.fmt);
- return 0;
-}
-
-static int ov2680_exposure_set(struct ov2680_dev *sensor, u32 exp)
-{
- return cci_write(sensor->regmap, OV2680_REG_EXPOSURE_PK, exp << 4,
- NULL);
-}
-
-static int ov2680_gain_set(struct ov2680_dev *sensor, u32 gain)
-{
- return cci_write(sensor->regmap, OV2680_REG_GAIN_PK, gain, NULL);
-}
-
-static int ov2680_test_pattern_set(struct ov2680_dev *sensor, int value)
-{
- int ret = 0;
-
- if (!value)
- return cci_update_bits(sensor->regmap, OV2680_REG_ISP_CTRL00,
- BIT(7), 0, NULL);
-
- cci_update_bits(sensor->regmap, OV2680_REG_ISP_CTRL00, 0x03, value - 1,
- &ret);
- cci_update_bits(sensor->regmap, OV2680_REG_ISP_CTRL00, BIT(7), BIT(7),
- &ret);
-
- return ret;
-}
-
-static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- int ret;
-
- /* Only apply changes to the controls if the device is powered up */
- if (!pm_runtime_get_if_in_use(sensor->sd.dev)) {
- ov2680_set_bayer_order(sensor, &sensor->mode.fmt);
- return 0;
- }
-
- switch (ctrl->id) {
- case V4L2_CID_VFLIP:
- ret = ov2680_set_vflip(sensor, ctrl->val);
- break;
- case V4L2_CID_HFLIP:
- ret = ov2680_set_hflip(sensor, ctrl->val);
- break;
- case V4L2_CID_EXPOSURE:
- ret = ov2680_exposure_set(sensor, ctrl->val);
- break;
- case V4L2_CID_GAIN:
- ret = ov2680_gain_set(sensor, ctrl->val);
- break;
- case V4L2_CID_TEST_PATTERN:
- ret = ov2680_test_pattern_set(sensor, ctrl->val);
- break;
- default:
- ret = -EINVAL;
- }
-
- pm_runtime_put(sensor->sd.dev);
- return ret;
-}
-
-static const struct v4l2_ctrl_ops ov2680_ctrl_ops = {
- .s_ctrl = ov2680_s_ctrl,
-};
-
-static int ov2680_init_registers(struct v4l2_subdev *sd)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- int ret;
-
- ret = cci_write(sensor->regmap, OV2680_REG_SOFT_RESET, 0x01, NULL);
- if (ret < 0)
- return ret;
-
- /* Wait for sensor reset */
- usleep_range(1000, 2000);
-
- return regmap_multi_reg_write(sensor->regmap, ov2680_global_setting,
- ARRAY_SIZE(ov2680_global_setting));
-}
-
-static struct v4l2_mbus_framefmt *
-__ov2680_get_pad_format(struct ov2680_dev *sensor, struct v4l2_subdev_state *state,
- unsigned int pad, enum v4l2_subdev_format_whence which)
-{
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_format(&sensor->sd, state, pad);
-
- return &sensor->mode.fmt;
-}
-
-static struct v4l2_rect *
-__ov2680_get_pad_crop(struct ov2680_dev *sensor, struct v4l2_subdev_state *state,
- unsigned int pad, enum v4l2_subdev_format_whence which)
-{
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_crop(&sensor->sd, state, pad);
-
- return &sensor->mode.crop;
-}
-
-static void ov2680_fill_format(struct ov2680_dev *sensor,
- struct v4l2_mbus_framefmt *fmt,
- unsigned int width, unsigned int height)
-{
- memset(fmt, 0, sizeof(*fmt));
- fmt->width = width;
- fmt->height = height;
- fmt->field = V4L2_FIELD_NONE;
- ov2680_set_bayer_order(sensor, fmt);
-}
-
-static void ov2680_calc_mode(struct ov2680_dev *sensor)
-{
- int width = sensor->mode.fmt.width;
- int height = sensor->mode.fmt.height;
- int orig_width = width;
- int orig_height = height;
-
- if (width <= (sensor->mode.crop.width / 2) &&
- height <= (sensor->mode.crop.height / 2)) {
- sensor->mode.binning = true;
- width *= 2;
- height *= 2;
- } else {
- sensor->mode.binning = false;
- }
-
- sensor->mode.h_start =
- (sensor->mode.crop.left + (sensor->mode.crop.width - width) / 2) & ~1;
- sensor->mode.v_start =
- (sensor->mode.crop.top + (sensor->mode.crop.height - height) / 2) & ~1;
- sensor->mode.h_end = min(sensor->mode.h_start + width + OV2680_END_MARGIN - 1,
- OV2680_NATIVE_WIDTH - 1);
- sensor->mode.v_end = min(sensor->mode.v_start + height + OV2680_END_MARGIN - 1,
- OV2680_NATIVE_HEIGHT - 1);
- sensor->mode.h_output_size = orig_width;
- sensor->mode.v_output_size = orig_height;
- sensor->mode.hts = OV2680_PIXELS_PER_LINE;
- sensor->mode.vts = OV2680_LINES_PER_FRAME;
-}
-
-static int ov2680_set_mode(struct ov2680_dev *sensor)
-{
- u8 sensor_ctrl_0a, inc, fmt1, fmt2;
- int ret = 0;
-
- if (sensor->mode.binning) {
- sensor_ctrl_0a = 0x23;
- inc = 0x31;
- fmt1 = 0xc2;
- fmt2 = 0x01;
- } else {
- sensor_ctrl_0a = 0x21;
- inc = 0x11;
- fmt1 = 0xc0;
- fmt2 = 0x00;
- }
-
- cci_write(sensor->regmap, OV2680_REG_SENSOR_CTRL_0A,
- sensor_ctrl_0a, &ret);
- cci_write(sensor->regmap, OV2680_REG_HORIZONTAL_START,
- sensor->mode.h_start, &ret);
- cci_write(sensor->regmap, OV2680_REG_VERTICAL_START,
- sensor->mode.v_start, &ret);
- cci_write(sensor->regmap, OV2680_REG_HORIZONTAL_END,
- sensor->mode.h_end, &ret);
- cci_write(sensor->regmap, OV2680_REG_VERTICAL_END,
- sensor->mode.v_end, &ret);
- cci_write(sensor->regmap, OV2680_REG_HORIZONTAL_OUTPUT_SIZE,
- sensor->mode.h_output_size, &ret);
- cci_write(sensor->regmap, OV2680_REG_VERTICAL_OUTPUT_SIZE,
- sensor->mode.v_output_size, &ret);
- cci_write(sensor->regmap, OV2680_REG_TIMING_HTS,
- sensor->mode.hts, &ret);
- cci_write(sensor->regmap, OV2680_REG_TIMING_VTS,
- sensor->mode.vts, &ret);
- cci_write(sensor->regmap, OV2680_REG_ISP_X_WIN, 0, &ret);
- cci_write(sensor->regmap, OV2680_REG_ISP_Y_WIN, 0, &ret);
- cci_write(sensor->regmap, OV2680_REG_X_INC, inc, &ret);
- cci_write(sensor->regmap, OV2680_REG_Y_INC, inc, &ret);
- cci_write(sensor->regmap, OV2680_REG_X_WIN,
- sensor->mode.h_output_size, &ret);
- cci_write(sensor->regmap, OV2680_REG_Y_WIN,
- sensor->mode.v_output_size, &ret);
- cci_write(sensor->regmap, OV2680_REG_FORMAT1, fmt1, &ret);
- cci_write(sensor->regmap, OV2680_REG_FORMAT2, fmt2, &ret);
-
- return ret;
-}
-
-static int ov2680_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *format)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- struct v4l2_mbus_framefmt *fmt;
- const struct v4l2_rect *crop;
- unsigned int width, height;
-
- crop = __ov2680_get_pad_crop(sensor, sd_state, format->pad, format->which);
-
- /* Limit set_fmt max size to crop width / height */
- width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
- OV2680_MIN_CROP_WIDTH, crop->width);
- height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
- OV2680_MIN_CROP_HEIGHT, crop->height);
-
- fmt = __ov2680_get_pad_format(sensor, sd_state, format->pad, format->which);
- ov2680_fill_format(sensor, fmt, width, height);
-
- format->format = *fmt;
-
- if (format->which == V4L2_SUBDEV_FORMAT_TRY)
- return 0;
-
- mutex_lock(&sensor->lock);
- ov2680_calc_mode(sensor);
- mutex_unlock(&sensor->lock);
- return 0;
-}
-
-static int ov2680_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *format)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- struct v4l2_mbus_framefmt *fmt;
-
- fmt = __ov2680_get_pad_format(sensor, sd_state, format->pad, format->which);
- format->format = *fmt;
- return 0;
-}
-
-static int ov2680_get_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_selection *sel)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
-
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP:
- mutex_lock(&sensor->lock);
- sel->r = *__ov2680_get_pad_crop(sensor, state, sel->pad, sel->which);
- mutex_unlock(&sensor->lock);
- break;
- case V4L2_SEL_TGT_NATIVE_SIZE:
- case V4L2_SEL_TGT_CROP_BOUNDS:
- sel->r.top = 0;
- sel->r.left = 0;
- sel->r.width = OV2680_NATIVE_WIDTH;
- sel->r.height = OV2680_NATIVE_HEIGHT;
- break;
- case V4L2_SEL_TGT_CROP_DEFAULT:
- sel->r.top = OV2680_ACTIVE_START_TOP;
- sel->r.left = OV2680_ACTIVE_START_LEFT;
- sel->r.width = OV2680_ACTIVE_WIDTH;
- sel->r.height = OV2680_ACTIVE_HEIGHT;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int ov2680_set_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_selection *sel)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- struct v4l2_mbus_framefmt *format;
- struct v4l2_rect *__crop;
- struct v4l2_rect rect;
-
- if (sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- /*
- * Clamp the boundaries of the crop rectangle to the size of the sensor
- * pixel array. Align to multiples of 2 to ensure Bayer pattern isn't
- * disrupted.
- */
- rect.left = clamp(ALIGN(sel->r.left, 2), OV2680_NATIVE_START_LEFT,
- OV2680_NATIVE_WIDTH);
- rect.top = clamp(ALIGN(sel->r.top, 2), OV2680_NATIVE_START_TOP,
- OV2680_NATIVE_HEIGHT);
- rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
- OV2680_MIN_CROP_WIDTH, OV2680_NATIVE_WIDTH);
- rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
- OV2680_MIN_CROP_HEIGHT, OV2680_NATIVE_HEIGHT);
-
- /* Make sure the crop rectangle isn't outside the bounds of the array */
- rect.width = min_t(unsigned int, rect.width,
- OV2680_NATIVE_WIDTH - rect.left);
- rect.height = min_t(unsigned int, rect.height,
- OV2680_NATIVE_HEIGHT - rect.top);
-
- __crop = __ov2680_get_pad_crop(sensor, state, sel->pad, sel->which);
-
- if (rect.width != __crop->width || rect.height != __crop->height) {
- /*
- * Reset the output image size if the crop rectangle size has
- * been modified.
- */
- format = __ov2680_get_pad_format(sensor, state, sel->pad, sel->which);
- format->width = rect.width;
- format->height = rect.height;
- }
-
- *__crop = rect;
- sel->r = rect;
-
- return 0;
-}
-
-static int ov2680_init_cfg(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state)
-{
- struct v4l2_subdev_format fmt = {
- .which = sd_state ? V4L2_SUBDEV_FORMAT_TRY
- : V4L2_SUBDEV_FORMAT_ACTIVE,
- .format = {
- .width = 800,
- .height = 600,
- },
- };
-
- sd_state->pads[0].try_crop = ov2680_default_crop;
-
- return ov2680_set_fmt(sd, sd_state, &fmt);
-}
-
-static int ov2680_detect(struct ov2680_dev *sensor)
-{
- u64 chip_id, rev;
- int ret = 0;
-
- cci_read(sensor->regmap, OV2680_REG_CHIP_ID, &chip_id, &ret);
- cci_read(sensor->regmap, OV2680_REG_SC_CMMN_SUB_ID, &rev, &ret);
- if (ret < 0) {
- dev_err(sensor->dev, "failed to read chip id\n");
- return -ENODEV;
- }
-
- if (chip_id != OV2680_CHIP_ID) {
- dev_err(sensor->dev, "chip id: 0x%04llx does not match expected 0x%04x\n",
- chip_id, OV2680_CHIP_ID);
- return -ENODEV;
- }
-
- dev_info(sensor->dev, "sensor_revision id = 0x%llx, rev= %lld\n",
- chip_id, rev & 0x0f);
-
- return 0;
-}
-
-static int ov2680_s_stream(struct v4l2_subdev *sd, int enable)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret = 0;
-
- mutex_lock(&sensor->lock);
-
- if (sensor->is_streaming == enable) {
- dev_warn(&client->dev, "stream already %s\n", enable ? "started" : "stopped");
- goto error_unlock;
- }
-
- if (enable) {
- ret = pm_runtime_get_sync(sensor->sd.dev);
- if (ret < 0)
- goto error_power_down;
-
- ret = ov2680_set_mode(sensor);
- if (ret)
- goto error_power_down;
-
- /* Restore value of all ctrls */
- ret = __v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
- if (ret)
- goto error_power_down;
-
- ret = cci_write(sensor->regmap, OV2680_REG_STREAM_CTRL, 1,
- NULL);
- if (ret)
- goto error_power_down;
- } else {
- cci_write(sensor->regmap, OV2680_REG_STREAM_CTRL, 0, NULL);
- pm_runtime_put(sensor->sd.dev);
- }
-
- sensor->is_streaming = enable;
- v4l2_ctrl_activate(sensor->ctrls.vflip, !enable);
- v4l2_ctrl_activate(sensor->ctrls.hflip, !enable);
-
- mutex_unlock(&sensor->lock);
- return 0;
-
-error_power_down:
- pm_runtime_put(sensor->sd.dev);
- sensor->is_streaming = false;
-error_unlock:
- mutex_unlock(&sensor->lock);
- return ret;
-}
-
-static int ov2680_s_config(struct v4l2_subdev *sd)
-{
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret;
-
- ret = pm_runtime_get_sync(&client->dev);
- if (ret < 0) {
- dev_err(&client->dev, "ov2680 power-up err.\n");
- goto fail_power_on;
- }
-
- /* config & detect sensor */
- ret = ov2680_detect(sensor);
- if (ret)
- dev_err(&client->dev, "ov2680_detect err s_config.\n");
-
-fail_power_on:
- pm_runtime_put(&client->dev);
- return ret;
-}
-
-static int ov2680_g_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_frame_interval *interval)
-{
- interval->interval.numerator = 1;
- interval->interval.denominator = OV2680_FRAME_RATE;
- return 0;
-}
-
-static int ov2680_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- /* We support only a single format */
- if (code->index)
- return -EINVAL;
-
- code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- return 0;
-}
-
-static int ov2680_enum_frame_size(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_size_enum *fse)
-{
- static const struct v4l2_frmsize_discrete ov2680_frame_sizes[] = {
- { 1616, 1216 },
- { 1616, 1096 },
- { 1616, 916 },
- { 1456, 1096 },
- { 1296, 976 },
- { 1296, 736 },
- { 784, 592 },
- { 656, 496 },
- };
- int index = fse->index;
-
- if (index >= ARRAY_SIZE(ov2680_frame_sizes))
- return -EINVAL;
-
- fse->min_width = ov2680_frame_sizes[index].width;
- fse->min_height = ov2680_frame_sizes[index].height;
- fse->max_width = ov2680_frame_sizes[index].width;
- fse->max_height = ov2680_frame_sizes[index].height;
-
- return 0;
-}
-
-static int ov2680_enum_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_interval_enum *fie)
-{
- /* Only 1 framerate */
- if (fie->index)
- return -EINVAL;
-
- fie->interval.numerator = 1;
- fie->interval.denominator = OV2680_FRAME_RATE;
- return 0;
-}
-
-static int ov2680_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
-{
- *frames = OV2680_SKIP_FRAMES;
- return 0;
-}
-
-static const struct v4l2_subdev_video_ops ov2680_video_ops = {
- .s_stream = ov2680_s_stream,
- .g_frame_interval = ov2680_g_frame_interval,
-};
-
-static const struct v4l2_subdev_sensor_ops ov2680_sensor_ops = {
- .g_skip_frames = ov2680_g_skip_frames,
-};
-
-static const struct v4l2_subdev_pad_ops ov2680_pad_ops = {
- .init_cfg = ov2680_init_cfg,
- .enum_mbus_code = ov2680_enum_mbus_code,
- .enum_frame_size = ov2680_enum_frame_size,
- .enum_frame_interval = ov2680_enum_frame_interval,
- .get_fmt = ov2680_get_fmt,
- .set_fmt = ov2680_set_fmt,
- .get_selection = ov2680_get_selection,
- .set_selection = ov2680_set_selection,
-};
-
-static const struct v4l2_subdev_ops ov2680_ops = {
- .video = &ov2680_video_ops,
- .pad = &ov2680_pad_ops,
- .sensor = &ov2680_sensor_ops,
-};
-
-static int ov2680_init_controls(struct ov2680_dev *sensor)
-{
- static const char * const test_pattern_menu[] = {
- "Disabled",
- "Color Bars",
- "Random Data",
- "Square",
- "Black Image",
- };
- const struct v4l2_ctrl_ops *ops = &ov2680_ctrl_ops;
- struct ov2680_ctrls *ctrls = &sensor->ctrls;
- struct v4l2_ctrl_handler *hdl = &ctrls->handler;
- int exp_max = OV2680_LINES_PER_FRAME - OV2680_INTEGRATION_TIME_MARGIN;
-
- v4l2_ctrl_handler_init(hdl, 4);
-
- hdl->lock = &sensor->lock;
-
- ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
- ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
- ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
- 0, exp_max, 1, exp_max);
- ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 1023, 1, 250);
- ctrls->test_pattern =
- v4l2_ctrl_new_std_menu_items(hdl,
- &ov2680_ctrl_ops, V4L2_CID_TEST_PATTERN,
- ARRAY_SIZE(test_pattern_menu) - 1,
- 0, 0, test_pattern_menu);
-
- ctrls->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
- ctrls->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
-
- if (hdl->error)
- return hdl->error;
-
- sensor->sd.ctrl_handler = hdl;
- return 0;
-}
-
-static void ov2680_remove(struct i2c_client *client)
-{
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
-
- dev_dbg(&client->dev, "ov2680_remove...\n");
-
- v4l2_async_unregister_subdev(&sensor->sd);
- media_entity_cleanup(&sensor->sd.entity);
- v4l2_ctrl_handler_free(&sensor->ctrls.handler);
- mutex_destroy(&sensor->lock);
- fwnode_handle_put(sensor->ep_fwnode);
- pm_runtime_disable(&client->dev);
-}
-
-static int ov2680_probe(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
- struct ov2680_dev *sensor;
- int ret;
-
- sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
- if (!sensor)
- return -ENOMEM;
-
- sensor->regmap = devm_cci_regmap_init_i2c(client, 16);
- if (IS_ERR(sensor->regmap))
- return PTR_ERR(sensor->regmap);
-
- mutex_init(&sensor->lock);
-
- sensor->dev = &client->dev;
- v4l2_i2c_subdev_init(&sensor->sd, client, &ov2680_ops);
-
- /*
- * Sometimes the fwnode graph is initialized by the bridge driver.
- * Bridge drivers doing this may also add GPIO mappings, wait for this.
- */
- sensor->ep_fwnode = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
- if (!sensor->ep_fwnode)
- return dev_err_probe(dev, -EPROBE_DEFER, "waiting for fwnode graph endpoint\n");
-
- sensor->powerdown = devm_gpiod_get_optional(dev, "powerdown", GPIOD_OUT_HIGH);
- if (IS_ERR(sensor->powerdown)) {
- fwnode_handle_put(sensor->ep_fwnode);
- return dev_err_probe(dev, PTR_ERR(sensor->powerdown), "getting powerdown GPIO\n");
- }
-
- pm_runtime_set_suspended(dev);
- pm_runtime_enable(dev);
- pm_runtime_set_autosuspend_delay(dev, 1000);
- pm_runtime_use_autosuspend(dev);
-
- ret = ov2680_s_config(&sensor->sd);
- if (ret) {
- ov2680_remove(client);
- return ret;
- }
-
- sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
- sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
- sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
- sensor->sd.fwnode = sensor->ep_fwnode;
-
- ret = ov2680_init_controls(sensor);
- if (ret) {
- ov2680_remove(client);
- return ret;
- }
-
- ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
- if (ret) {
- ov2680_remove(client);
- return ret;
- }
-
- sensor->mode.crop = ov2680_default_crop;
- ov2680_fill_format(sensor, &sensor->mode.fmt, OV2680_NATIVE_WIDTH, OV2680_NATIVE_HEIGHT);
- ov2680_calc_mode(sensor);
-
- ret = v4l2_async_register_subdev_sensor(&sensor->sd);
- if (ret) {
- ov2680_remove(client);
- return ret;
- }
-
- return 0;
-}
-
-static int ov2680_suspend(struct device *dev)
-{
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
-
- gpiod_set_value_cansleep(sensor->powerdown, 1);
- return 0;
-}
-
-static int ov2680_resume(struct device *dev)
-{
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
- struct ov2680_dev *sensor = to_ov2680_sensor(sd);
-
- /* according to DS, at least 5ms is needed after DOVDD (enabled by ACPI) */
- usleep_range(5000, 6000);
-
- gpiod_set_value_cansleep(sensor->powerdown, 0);
-
- /* according to DS, 20ms is needed between PWDN and i2c access */
- msleep(20);
-
- ov2680_init_registers(sd);
- return 0;
-}
-
-static DEFINE_RUNTIME_DEV_PM_OPS(ov2680_pm_ops, ov2680_suspend, ov2680_resume, NULL);
-
-static const struct acpi_device_id ov2680_acpi_match[] = {
- {"XXOV2680"},
- {"OVTI2680"},
- {},
-};
-MODULE_DEVICE_TABLE(acpi, ov2680_acpi_match);
-
-static struct i2c_driver ov2680_driver = {
- .driver = {
- .name = "ov2680",
- .pm = pm_sleep_ptr(&ov2680_pm_ops),
- .acpi_match_table = ov2680_acpi_match,
- },
- .probe = ov2680_probe,
- .remove = ov2680_remove,
-};
-module_i2c_driver(ov2680_driver);
-
-MODULE_AUTHOR("Jacky Wang <Jacky_wang@ovt.com>");
-MODULE_DESCRIPTION("A low-level driver for OmniVision 2680 sensors");
-MODULE_LICENSE("GPL");
projects / platform / kernel / linux-starfive.git / commitdiff