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|
// SPDX-License-Identifier: GPL-2.0
/*
* Support for OmniVision OV2722 1080p HD camera sensor.
*
* Copyright (c) 2013 Intel Corporation. All Rights Reserved.
*
* 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/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kmod.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/moduleparam.h>
#include <media/v4l2-device.h>
#include "../include/linux/atomisp_gmin_platform.h"
#include <linux/acpi.h>
#include <linux/io.h>
#include "ov2722.h"
/* i2c read/write stuff */
static int ov2722_read_reg(struct i2c_client *client,
u16 data_length, u16 reg, u16 *val)
{
int err;
struct i2c_msg msg[2];
unsigned char data[6];
if (!client->adapter) {
dev_err(&client->dev, "%s error, no client->adapter\n",
__func__);
return -ENODEV;
}
if (data_length != OV2722_8BIT && data_length != OV2722_16BIT &&
data_length != OV2722_32BIT) {
dev_err(&client->dev, "%s error, invalid data length\n",
__func__);
return -EINVAL;
}
memset(msg, 0, sizeof(msg));
msg[0].addr = client->addr;
msg[0].flags = 0;
msg[0].len = I2C_MSG_LENGTH;
msg[0].buf = data;
/* high byte goes out first */
data[0] = (u8)(reg >> 8);
data[1] = (u8)(reg & 0xff);
msg[1].addr = client->addr;
msg[1].len = data_length;
msg[1].flags = I2C_M_RD;
msg[1].buf = data;
err = i2c_transfer(client->adapter, msg, 2);
if (err != 2) {
if (err >= 0)
err = -EIO;
dev_err(&client->dev,
"read from offset 0x%x error %d", reg, err);
return err;
}
*val = 0;
/* high byte comes first */
if (data_length == OV2722_8BIT)
*val = (u8)data[0];
else if (data_length == OV2722_16BIT)
*val = be16_to_cpu(*(__be16 *)&data[0]);
else
*val = be32_to_cpu(*(__be32 *)&data[0]);
return 0;
}
static int ov2722_i2c_write(struct i2c_client *client, u16 len, u8 *data)
{
struct i2c_msg msg;
const int num_msg = 1;
int ret;
msg.addr = client->addr;
msg.flags = 0;
msg.len = len;
msg.buf = data;
ret = i2c_transfer(client->adapter, &msg, 1);
return ret == num_msg ? 0 : -EIO;
}
static int ov2722_write_reg(struct i2c_client *client, u16 data_length,
u16 reg, u16 val)
{
int ret;
unsigned char data[4] = {0};
__be16 *wreg = (__be16 *)data;
const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
if (data_length != OV2722_8BIT && data_length != OV2722_16BIT) {
dev_err(&client->dev,
"%s error, invalid data_length\n", __func__);
return -EINVAL;
}
/* high byte goes out first */
*wreg = cpu_to_be16(reg);
if (data_length == OV2722_8BIT) {
data[2] = (u8)(val);
} else {
/* OV2722_16BIT */
__be16 *wdata = (__be16 *)&data[2];
*wdata = cpu_to_be16(val);
}
ret = ov2722_i2c_write(client, len, data);
if (ret)
dev_err(&client->dev,
"write error: wrote 0x%x to offset 0x%x error %d",
val, reg, ret);
return ret;
}
/*
* ov2722_write_reg_array - Initializes a list of OV2722 registers
* @client: i2c driver client structure
* @reglist: list of registers to be written
*
* This function initializes a list of registers. When consecutive addresses
* are found in a row on the list, this function creates a buffer and sends
* consecutive data in a single i2c_transfer().
*
* __ov2722_flush_reg_array, __ov2722_buf_reg_array() and
* __ov2722_write_reg_is_consecutive() are internal functions to
* ov2722_write_reg_array_fast() and should be not used anywhere else.
*
*/
static int __ov2722_flush_reg_array(struct i2c_client *client,
struct ov2722_write_ctrl *ctrl)
{
u16 size;
__be16 *data16 = (void *)&ctrl->buffer.addr;
if (ctrl->index == 0)
return 0;
size = sizeof(u16) + ctrl->index; /* 16-bit address + data */
*data16 = cpu_to_be16(ctrl->buffer.addr);
ctrl->index = 0;
return ov2722_i2c_write(client, size, (u8 *)&ctrl->buffer);
}
static int __ov2722_buf_reg_array(struct i2c_client *client,
struct ov2722_write_ctrl *ctrl,
const struct ov2722_reg *next)
{
int size;
__be16 *data16;
switch (next->type) {
case OV2722_8BIT:
size = 1;
ctrl->buffer.data[ctrl->index] = (u8)next->val;
break;
case OV2722_16BIT:
size = 2;
data16 = (void *)&ctrl->buffer.data[ctrl->index];
*data16 = cpu_to_be16((u16)next->val);
break;
default:
return -EINVAL;
}
/* When first item is added, we need to store its starting address */
if (ctrl->index == 0)
ctrl->buffer.addr = next->reg;
ctrl->index += size;
/*
* Buffer cannot guarantee free space for u32? Better flush it to avoid
* possible lack of memory for next item.
*/
if (ctrl->index + sizeof(u16) >= OV2722_MAX_WRITE_BUF_SIZE)
return __ov2722_flush_reg_array(client, ctrl);
return 0;
}
static int __ov2722_write_reg_is_consecutive(struct i2c_client *client,
struct ov2722_write_ctrl *ctrl,
const struct ov2722_reg *next)
{
if (ctrl->index == 0)
return 1;
return ctrl->buffer.addr + ctrl->index == next->reg;
}
static int ov2722_write_reg_array(struct i2c_client *client,
const struct ov2722_reg *reglist)
{
const struct ov2722_reg *next = reglist;
struct ov2722_write_ctrl ctrl;
int err;
ctrl.index = 0;
for (; next->type != OV2722_TOK_TERM; next++) {
switch (next->type & OV2722_TOK_MASK) {
case OV2722_TOK_DELAY:
err = __ov2722_flush_reg_array(client, &ctrl);
if (err)
return err;
msleep(next->val);
break;
default:
/*
* If next address is not consecutive, data needs to be
* flushed before proceed.
*/
if (!__ov2722_write_reg_is_consecutive(client, &ctrl,
next)) {
err = __ov2722_flush_reg_array(client, &ctrl);
if (err)
return err;
}
err = __ov2722_buf_reg_array(client, &ctrl, next);
if (err) {
dev_err(&client->dev, "%s: write error, aborted\n",
__func__);
return err;
}
break;
}
}
return __ov2722_flush_reg_array(client, &ctrl);
}
static long __ov2722_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
int gain, int digitgain)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov2722_device *dev = to_ov2722_sensor(sd);
u16 hts, vts;
int ret;
dev_dbg(&client->dev, "set_exposure without group hold\n");
/* clear VTS_DIFF on manual mode */
ret = ov2722_write_reg(client, OV2722_16BIT, OV2722_VTS_DIFF_H, 0);
if (ret)
return ret;
hts = dev->pixels_per_line;
vts = dev->lines_per_frame;
if ((coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN) > vts)
vts = coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN;
coarse_itg <<= 4;
digitgain <<= 2;
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_VTS_H, vts);
if (ret)
return ret;
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_HTS_H, hts);
if (ret)
return ret;
/* set exposure */
ret = ov2722_write_reg(client, OV2722_8BIT,
OV2722_AEC_PK_EXPO_L,
coarse_itg & 0xff);
if (ret)
return ret;
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_AEC_PK_EXPO_H,
(coarse_itg >> 8) & 0xfff);
if (ret)
return ret;
/* set analog gain */
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_AGC_ADJ_H, gain);
if (ret)
return ret;
/* set digital gain */
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_MWB_GAIN_R_H, digitgain);
if (ret)
return ret;
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_MWB_GAIN_G_H, digitgain);
if (ret)
return ret;
ret = ov2722_write_reg(client, OV2722_16BIT,
OV2722_MWB_GAIN_B_H, digitgain);
return ret;
}
static int ov2722_set_exposure(struct v4l2_subdev *sd, int exposure,
int gain, int digitgain)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
int ret;
mutex_lock(&dev->input_lock);
ret = __ov2722_set_exposure(sd, exposure, gain, digitgain);
mutex_unlock(&dev->input_lock);
return ret;
}
static long ov2722_s_exposure(struct v4l2_subdev *sd,
struct atomisp_exposure *exposure)
{
int exp = exposure->integration_time[0];
int gain = exposure->gain[0];
int digitgain = exposure->gain[1];
/* we should not accept the invalid value below. */
if (gain == 0) {
struct i2c_client *client = v4l2_get_subdevdata(sd);
v4l2_err(client, "%s: invalid value\n", __func__);
return -EINVAL;
}
return ov2722_set_exposure(sd, exp, gain, digitgain);
}
static long ov2722_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
switch (cmd) {
case ATOMISP_IOC_S_EXPOSURE:
return ov2722_s_exposure(sd, arg);
default:
return -EINVAL;
}
return 0;
}
/* This returns the exposure time being used. This should only be used
* for filling in EXIF data, not for actual image processing.
*/
static int ov2722_q_exposure(struct v4l2_subdev *sd, s32 *value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u16 reg_v, reg_v2;
int ret;
/* get exposure */
ret = ov2722_read_reg(client, OV2722_8BIT,
OV2722_AEC_PK_EXPO_L,
®_v);
if (ret)
goto err;
ret = ov2722_read_reg(client, OV2722_8BIT,
OV2722_AEC_PK_EXPO_M,
®_v2);
if (ret)
goto err;
reg_v += reg_v2 << 8;
ret = ov2722_read_reg(client, OV2722_8BIT,
OV2722_AEC_PK_EXPO_H,
®_v2);
if (ret)
goto err;
*value = reg_v + (((u32)reg_v2 << 16));
err:
return ret;
}
static int ov2722_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov2722_device *dev =
container_of(ctrl->handler, struct ov2722_device, ctrl_handler);
int ret = 0;
unsigned int val;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE_ABSOLUTE:
ret = ov2722_q_exposure(&dev->sd, &ctrl->val);
break;
case V4L2_CID_LINK_FREQ:
val = dev->res->mipi_freq;
if (val == 0)
return -EINVAL;
ctrl->val = val * 1000; /* To Hz */
break;
default:
ret = -EINVAL;
}
return ret;
}
static const struct v4l2_ctrl_ops ctrl_ops = {
.g_volatile_ctrl = ov2722_g_volatile_ctrl
};
static const struct v4l2_ctrl_config ov2722_controls[] = {
{
.ops = &ctrl_ops,
.id = V4L2_CID_EXPOSURE_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "exposure",
.min = 0x0,
.max = 0xffff,
.step = 0x01,
.def = 0x00,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_LINK_FREQ,
.name = "Link Frequency",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 1,
.max = 1500000 * 1000,
.step = 1,
.def = 1,
.flags = V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY,
},
};
static int ov2722_init(struct v4l2_subdev *sd)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
mutex_lock(&dev->input_lock);
/* restore settings */
ov2722_res = ov2722_res_preview;
N_RES = N_RES_PREVIEW;
mutex_unlock(&dev->input_lock);
return 0;
}
static int power_ctrl(struct v4l2_subdev *sd, bool flag)
{
int ret = -1;
struct ov2722_device *dev = to_ov2722_sensor(sd);
if (!dev || !dev->platform_data)
return -ENODEV;
if (flag) {
ret = dev->platform_data->v1p8_ctrl(sd, 1);
if (ret == 0) {
ret = dev->platform_data->v2p8_ctrl(sd, 1);
if (ret)
dev->platform_data->v1p8_ctrl(sd, 0);
}
} else {
ret = dev->platform_data->v1p8_ctrl(sd, 0);
ret |= dev->platform_data->v2p8_ctrl(sd, 0);
}
return ret;
}
static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
int ret = -1;
if (!dev || !dev->platform_data)
return -ENODEV;
/* Note: the GPIO order is asymmetric: always RESET#
* before PWDN# when turning it on or off.
*/
ret = dev->platform_data->gpio0_ctrl(sd, flag);
ret |= dev->platform_data->gpio1_ctrl(sd, flag);
return ret;
}
static int power_up(struct v4l2_subdev *sd)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
if (!dev->platform_data) {
dev_err(&client->dev,
"no camera_sensor_platform_data");
return -ENODEV;
}
if (dev->power_on == 1)
return 0; /* Already on */
/* power control */
ret = power_ctrl(sd, 1);
if (ret)
goto fail_power;
/* according to DS, at least 5ms is needed between DOVDD and PWDN */
usleep_range(5000, 6000);
/* gpio ctrl */
ret = gpio_ctrl(sd, 1);
if (ret) {
ret = gpio_ctrl(sd, 0);
if (ret)
goto fail_power;
}
/* flis clock control */
ret = dev->platform_data->flisclk_ctrl(sd, 1);
if (ret)
goto fail_clk;
/* according to DS, 20ms is needed between PWDN and i2c access */
msleep(20);
dev->power_on = 1;
return 0;
fail_clk:
gpio_ctrl(sd, 0);
fail_power:
power_ctrl(sd, 0);
dev_err(&client->dev, "sensor power-up failed\n");
return ret;
}
static int power_down(struct v4l2_subdev *sd)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
if (!dev->platform_data) {
dev_err(&client->dev,
"no camera_sensor_platform_data");
return -ENODEV;
}
if (dev->power_on == 0)
return 0; /* Already off */
ret = dev->platform_data->flisclk_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "flisclk failed\n");
/* gpio ctrl */
ret = gpio_ctrl(sd, 0);
if (ret) {
ret = gpio_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "gpio failed 2\n");
}
/* power control */
ret = power_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "vprog failed.\n");
dev->power_on = 0;
return ret;
}
static int ov2722_s_power(struct v4l2_subdev *sd, int on)
{
int ret;
if (on == 0)
return power_down(sd);
ret = power_up(sd);
if (!ret)
return ov2722_init(sd);
return ret;
}
/* TODO: remove it. */
static int startup(struct v4l2_subdev *sd)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
ret = ov2722_write_reg(client, OV2722_8BIT,
OV2722_SW_RESET, 0x01);
if (ret) {
dev_err(&client->dev, "ov2722 reset err.\n");
return ret;
}
ret = ov2722_write_reg_array(client, dev->res->regs);
if (ret) {
dev_err(&client->dev, "ov2722 write register err.\n");
return ret;
}
return ret;
}
static int ov2722_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *fmt = &format->format;
struct ov2722_device *dev = to_ov2722_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov2722_resolution *res;
struct camera_mipi_info *ov2722_info = NULL;
int ret = 0;
if (format->pad)
return -EINVAL;
if (!fmt)
return -EINVAL;
ov2722_info = v4l2_get_subdev_hostdata(sd);
if (!ov2722_info)
return -EINVAL;
res = v4l2_find_nearest_size(ov2722_res_preview,
ARRAY_SIZE(ov2722_res_preview), width,
height, fmt->width, fmt->height);
if (!res)
res = &ov2722_res_preview[N_RES - 1];
fmt->width = res->width;
fmt->height = res->height;
dev->res = res;
fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
*v4l2_subdev_state_get_format(sd_state, 0) = *fmt;
return 0;
}
mutex_lock(&dev->input_lock);
/* s_power has not been called yet for std v4l2 clients (camorama) */
power_up(sd);
dev->pixels_per_line = dev->res->pixels_per_line;
dev->lines_per_frame = dev->res->lines_per_frame;
ret = startup(sd);
if (ret) {
int i = 0;
dev_err(&client->dev, "ov2722 startup err, retry to power up\n");
for (i = 0; i < OV2722_POWER_UP_RETRY_NUM; i++) {
dev_err(&client->dev,
"ov2722 retry to power up %d/%d times, result: ",
i + 1, OV2722_POWER_UP_RETRY_NUM);
power_down(sd);
ret = power_up(sd);
if (ret) {
dev_err(&client->dev, "power up failed, continue\n");
continue;
}
ret = startup(sd);
if (ret) {
dev_err(&client->dev, " startup FAILED!\n");
} else {
dev_err(&client->dev, " startup SUCCESS!\n");
break;
}
}
if (ret) {
dev_err(&client->dev, "ov2722 startup err\n");
goto err;
}
}
err:
mutex_unlock(&dev->input_lock);
return ret;
}
static int ov2722_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *fmt = &format->format;
struct ov2722_device *dev = to_ov2722_sensor(sd);
if (format->pad)
return -EINVAL;
if (!fmt)
return -EINVAL;
fmt->width = dev->res->width;
fmt->height = dev->res->height;
fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
return 0;
}
static int ov2722_detect(struct i2c_client *client)
{
struct i2c_adapter *adapter = client->adapter;
u16 high = 0, low = 0;
u16 id;
u8 revision;
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return -ENODEV;
ov2722_read_reg(client, OV2722_8BIT,
OV2722_SC_CMMN_CHIP_ID_H, &high);
ov2722_read_reg(client, OV2722_8BIT,
OV2722_SC_CMMN_CHIP_ID_L, &low);
id = (high << 8) | low;
if ((id != OV2722_ID) && (id != OV2720_ID)) {
dev_err(&client->dev, "sensor ID error\n");
return -ENODEV;
}
high = 0;
ov2722_read_reg(client, OV2722_8BIT,
OV2722_SC_CMMN_SUB_ID, &high);
revision = (u8)high & 0x0f;
dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision);
dev_dbg(&client->dev, "detect ov2722 success\n");
return 0;
}
static int ov2722_s_stream(struct v4l2_subdev *sd, int enable)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
mutex_lock(&dev->input_lock);
ret = ov2722_write_reg(client, OV2722_8BIT, OV2722_SW_STREAM,
enable ? OV2722_START_STREAMING :
OV2722_STOP_STREAMING);
mutex_unlock(&dev->input_lock);
return ret;
}
static int ov2722_s_config(struct v4l2_subdev *sd,
int irq, void *platform_data)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
if (!platform_data)
return -ENODEV;
dev->platform_data =
(struct camera_sensor_platform_data *)platform_data;
mutex_lock(&dev->input_lock);
/* power off the module, then power on it in future
* as first power on by board may not fulfill the
* power on sequqence needed by the module
*/
ret = power_down(sd);
if (ret) {
dev_err(&client->dev, "ov2722 power-off err.\n");
goto fail_power_off;
}
ret = power_up(sd);
if (ret) {
dev_err(&client->dev, "ov2722 power-up err.\n");
goto fail_power_on;
}
ret = dev->platform_data->csi_cfg(sd, 1);
if (ret)
goto fail_csi_cfg;
/* config & detect sensor */
ret = ov2722_detect(client);
if (ret) {
dev_err(&client->dev, "ov2722_detect err s_config.\n");
goto fail_csi_cfg;
}
/* turn off sensor, after probed */
ret = power_down(sd);
if (ret) {
dev_err(&client->dev, "ov2722 power-off err.\n");
goto fail_csi_cfg;
}
mutex_unlock(&dev->input_lock);
return 0;
fail_csi_cfg:
dev->platform_data->csi_cfg(sd, 0);
fail_power_on:
power_down(sd);
dev_err(&client->dev, "sensor power-gating failed\n");
fail_power_off:
mutex_unlock(&dev->input_lock);
return ret;
}
static int ov2722_get_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *interval)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
interval->interval.numerator = 1;
interval->interval.denominator = dev->res->fps;
return 0;
}
static int ov2722_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index >= MAX_FMTS)
return -EINVAL;
code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
return 0;
}
static int ov2722_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
int index = fse->index;
if (index >= N_RES)
return -EINVAL;
fse->min_width = ov2722_res[index].width;
fse->min_height = ov2722_res[index].height;
fse->max_width = ov2722_res[index].width;
fse->max_height = ov2722_res[index].height;
return 0;
}
static int ov2722_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
mutex_lock(&dev->input_lock);
*frames = dev->res->skip_frames;
mutex_unlock(&dev->input_lock);
return 0;
}
static const struct v4l2_subdev_sensor_ops ov2722_sensor_ops = {
.g_skip_frames = ov2722_g_skip_frames,
};
static const struct v4l2_subdev_video_ops ov2722_video_ops = {
.s_stream = ov2722_s_stream,
};
static const struct v4l2_subdev_core_ops ov2722_core_ops = {
.s_power = ov2722_s_power,
.ioctl = ov2722_ioctl,
};
static const struct v4l2_subdev_pad_ops ov2722_pad_ops = {
.enum_mbus_code = ov2722_enum_mbus_code,
.enum_frame_size = ov2722_enum_frame_size,
.get_fmt = ov2722_get_fmt,
.set_fmt = ov2722_set_fmt,
.get_frame_interval = ov2722_get_frame_interval,
};
static const struct v4l2_subdev_ops ov2722_ops = {
.core = &ov2722_core_ops,
.video = &ov2722_video_ops,
.pad = &ov2722_pad_ops,
.sensor = &ov2722_sensor_ops,
};
static void ov2722_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov2722_device *dev = to_ov2722_sensor(sd);
dev->platform_data->csi_cfg(sd, 0);
v4l2_ctrl_handler_free(&dev->ctrl_handler);
v4l2_device_unregister_subdev(sd);
atomisp_gmin_remove_subdev(sd);
media_entity_cleanup(&dev->sd.entity);
kfree(dev);
}
static int __ov2722_init_ctrl_handler(struct ov2722_device *dev)
{
struct v4l2_ctrl_handler *hdl;
unsigned int i;
hdl = &dev->ctrl_handler;
v4l2_ctrl_handler_init(&dev->ctrl_handler, ARRAY_SIZE(ov2722_controls));
for (i = 0; i < ARRAY_SIZE(ov2722_controls); i++)
v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov2722_controls[i],
NULL);
dev->link_freq = v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_LINK_FREQ);
if (dev->ctrl_handler.error || !dev->link_freq)
return dev->ctrl_handler.error;
dev->sd.ctrl_handler = hdl;
return 0;
}
static int ov2722_probe(struct i2c_client *client)
{
struct ov2722_device *dev;
void *ovpdev;
int ret;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
mutex_init(&dev->input_lock);
dev->power_on = -1;
dev->res = &ov2722_res_preview[0];
v4l2_i2c_subdev_init(&dev->sd, client, &ov2722_ops);
ovpdev = gmin_camera_platform_data(&dev->sd,
ATOMISP_INPUT_FORMAT_RAW_10,
atomisp_bayer_order_grbg);
ret = ov2722_s_config(&dev->sd, client->irq, ovpdev);
if (ret)
goto out_free;
ret = __ov2722_init_ctrl_handler(dev);
if (ret)
goto out_ctrl_handler_free;
dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
dev->pad.flags = MEDIA_PAD_FL_SOURCE;
dev->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
if (ret)
ov2722_remove(client);
return atomisp_register_i2c_module(&dev->sd, ovpdev, RAW_CAMERA);
out_ctrl_handler_free:
v4l2_ctrl_handler_free(&dev->ctrl_handler);
out_free:
atomisp_gmin_remove_subdev(&dev->sd);
v4l2_device_unregister_subdev(&dev->sd);
kfree(dev);
return ret;
}
static const struct acpi_device_id ov2722_acpi_match[] = {
{ "INT33FB" },
{},
};
MODULE_DEVICE_TABLE(acpi, ov2722_acpi_match);
static struct i2c_driver ov2722_driver = {
.driver = {
.name = "ov2722",
.acpi_match_table = ov2722_acpi_match,
},
.probe = ov2722_probe,
.remove = ov2722_remove,
};
module_i2c_driver(ov2722_driver);
MODULE_AUTHOR("Wei Liu <wei.liu@intel.com>");
MODULE_DESCRIPTION("A low-level driver for OmniVision 2722 sensors");
MODULE_LICENSE("GPL");
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