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android_kernel_modules_leno.../camera/drivers/media/i2c/s5k6b2yx.c

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/*
* Support for S5K6B2YX 2M camera sensor.
*
* Copyright (c) 2014 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/kmod.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-device.h>
#include "s5k6b2yx.h"
/* the bayer order mapping table
* hflip=0 hflip=1
* vflip=0 atomisp_bayer_order_grbg atomisp_bayer_order_rggb
* vflip=1 atomisp_bayer_order_bggr atomisp_bayer_order_gbrg
*
* usage: s5k6b2yx_bayer_order_mapping[vflip][hflip]
*/
/* S5K6B2YXA support only GRBG */
static const int s5k6b2yx_bayer_order_mapping[2][2] = {
{ atomisp_bayer_order_grbg, atomisp_bayer_order_rggb },
{ atomisp_bayer_order_bggr, atomisp_bayer_order_gbrg }
};
static const int s5k6b2yx_raw_bayer_order[] = {
[CAM_SW_STBY] = ATOMISP_INPUT_FORMAT_RAW_10,
[CAM_VIS_STBY] = ATOMISP_INPUT_FORMAT_RAW_8,
};
static int s5k6b2yx_read_reg(struct i2c_client *client, u16 len,
u16 reg, u16 *val)
{
struct i2c_msg msg[2];
u16 data[S5K6B2YX_SHORT_MAX] = {0};
int err, i;
int retry_cnt = 5;
if (len > S5K6B2YX_BYTE_MAX) {
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 = (u8 *)data;
/* high byte goes first */
data[0] = cpu_to_be16(reg);
msg[1].addr = client->addr;
msg[1].len = len;
msg[1].flags = I2C_M_RD;
msg[1].buf = (u8 *)data;
while (retry_cnt-- > 0) {
err = i2c_transfer(client->adapter, msg, 2);
if (err != 2) {
if (err >= 0)
err = -EIO;
dev_err(&client->dev, "%s error %d, retry_cnt: %d\n",
__func__, err, retry_cnt);
if (retry_cnt <= 0)
goto error;
} else
break;
}
/* high byte comes first */
if (len == S5K6B2YX_8BIT)
*val = (u8)data[0];
else {
/* 16-bit access is default when len > 1 */
for (i = 0; i < (len >> 1); i++)
val[i] = be16_to_cpu(data[i]);
}
return 0;
error:
dev_err(&client->dev, "read from offset 0x%x error %d", reg, err);
return err;
}
static int s5k6b2yx_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);
if (ret != num_msg)
dev_err(&client->dev, "%s error!!\n", __func__);
return ret == num_msg ? 0 : -EIO;
}
static int s5k6b2yx_write_reg(struct i2c_client *client, u16 data_length,
u16 reg, u16 val)
{
int ret;
unsigned char data[4] = {0};
u16 *wreg = (u16 *)data;
const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
int retry_cnt = 5;
if (data_length != S5K6B2YX_8BIT && data_length != S5K6B2YX_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 == S5K6B2YX_8BIT) {
data[2] = (u8)(val);
} else {
/* S5K6B2YX_16BIT */
u16 *wdata = (u16 *)&data[2];
*wdata = cpu_to_be16(val);
}
while (retry_cnt-- > 0) {
ret = s5k6b2yx_i2c_write(client, len, data);
if (ret) {
dev_err(&client->dev,
"write error: wrote 0x%x to offset 0x%xerror %d, retry_cnt %d\n",
val, reg, ret, retry_cnt);
return ret;
} else
break;
}
return ret;
}
/*
* s5k6b2yx_write_reg_array - Initializes a list of S5K6B2YX 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().
*
* __s5k6b2yx_flush_reg_array, __s5k6b2yx_buf_reg_array() and
* __s5k6b2yx_write_reg_is_consecutive() are internal functions to
* s5k6b2yx_write_reg_array_fast() and should be not used anywhere else.
*
*/
static int __s5k6b2yx_flush_reg_array(struct i2c_client *client,
struct s5k6b2yx_write_ctrl *ctrl)
{
u16 size;
if (ctrl->index == 0)
return 0;
size = sizeof(u16) + ctrl->index; /* 16-bit address + data */
ctrl->buffer.addr = cpu_to_be16(ctrl->buffer.addr);
ctrl->index = 0;
return s5k6b2yx_i2c_write(client, size, (u8 *)&ctrl->buffer);
}
static int __s5k6b2yx_buf_reg_array(struct i2c_client *client,
struct s5k6b2yx_write_ctrl *ctrl,
const struct s5k6b2yx_reg *next)
{
int size;
u16 *data16;
switch (next->type) {
case S5K6B2YX_8BIT:
size = 1;
ctrl->buffer.data[ctrl->index] = (u8)next->val;
break;
case S5K6B2YX_16BIT:
size = 2;
data16 = (u16 *)&ctrl->buffer.data[ctrl->index];
*data16 = (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->sreg;
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) >= S5K6B2YX_MAX_WRITE_BUF_SIZE)
return __s5k6b2yx_flush_reg_array(client, ctrl);
return 0;
}
static int __s5k6b2yx_write_reg_is_consecutive(struct i2c_client *client,
struct s5k6b2yx_write_ctrl *ctrl,
const struct s5k6b2yx_reg *next)
{
if (ctrl->index == 0)
return 1;
return ctrl->buffer.addr + ctrl->index == next->sreg;
}
static int s5k6b2yx_write_reg_array(struct i2c_client *client,
const struct s5k6b2yx_reg *reglist)
{
const struct s5k6b2yx_reg *next = reglist;
struct s5k6b2yx_write_ctrl ctrl;
int err;
ctrl.index = 0;
for (; next->type != S5K6B2YX_TOK_TERM; next++) {
switch (next->type & S5K6B2YX_TOK_MASK) {
case S5K6B2YX_TOK_DELAY:
err = __s5k6b2yx_flush_reg_array(client, &ctrl);
if (err) {
dev_err(&client->dev, "%s: write error\n", __func__);
return err;
}
msleep(next->val);
break;
default:
/*
* If next address is not consecutive, data needs to be
* flushed before proceed.
*/
if (!__s5k6b2yx_write_reg_is_consecutive(client, &ctrl,
next)) {
err = __s5k6b2yx_flush_reg_array(client, &ctrl);
if (err) {
dev_err(&client->dev, "%s: write error\n", __func__);
return err;
}
}
err = __s5k6b2yx_buf_reg_array(client, &ctrl, next);
if (err) {
dev_err(&client->dev, "%s: write error\n", __func__);
return err;
}
break;
}
}
return __s5k6b2yx_flush_reg_array(client, &ctrl);
}
static int __s5k6b2yx_init(struct v4l2_subdev *sd, u32 val)
{
/* restore settings */
s5k6b2yx_res = s5k6b2yx_res_preview;
N_RES = N_RES_PREVIEW;
return 0;
}
static int s5k6b2yx_init(struct v4l2_subdev *sd, u32 val)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int ret = 0;
mutex_lock(&dev->input_lock);
ret = __s5k6b2yx_init(sd, val);
mutex_unlock(&dev->input_lock);
return ret;
}
static void s5k6b2yx_uninit(struct v4l2_subdev *sd)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
dev->coarse_itg = 0;
dev->fine_itg = 0;
dev->gain = 0;
}
static int power_up(struct v4l2_subdev *sd)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
if (NULL == dev->platform_data) {
dev_err(&client->dev, "no camera_sensor_platform_data\n");
return -ENODEV;
}
/* power control */
ret = dev->platform_data->power_ctrl(sd, 1);
if (ret)
goto fail_power;
/* gpio ctrl */
ret = dev->platform_data->gpio_ctrl(sd, CAM_SW_STBY);
if (ret) {
dev_err(&client->dev, "gpio failed\n");
goto fail_gpio;
}
dev->mode = CAM_SW_STBY;
/* flis clock control */
ret = dev->platform_data->flisclk_ctrl(sd, 1);
if (ret)
goto fail_clk;
return 0;
fail_gpio:
dev->platform_data->gpio_ctrl(sd, CAM_HW_STBY);
fail_clk:
dev->platform_data->flisclk_ctrl(sd, 0);
fail_power:
dev->platform_data->power_ctrl(sd, 0);
dev_err(&client->dev, "sensor power-up failed\n");
return ret;
}
static int power_down(struct v4l2_subdev *sd)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
if (NULL == dev->platform_data) {
dev_err(&client->dev, "no camera_sensor_platform_data\n");
return -ENODEV;
}
ret = dev->platform_data->flisclk_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "flisclk failed\n");
/* gpio ctrl */
ret = dev->platform_data->gpio_ctrl(sd, CAM_HW_STBY);
if (ret)
dev_err(&client->dev, "gpio failed\n");
dev->mode = CAM_HW_STBY;
/* power control */
ret = dev->platform_data->power_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "vprog failed.\n");
return ret;
}
static int __s5k6b2yx_s_power(struct v4l2_subdev *sd, int power)
{
int ret;
if (power == 0) {
s5k6b2yx_uninit(sd);
ret = power_down(sd);
if (ret)
v4l2_err(sd, "sensor power down fail\n");
return ret;
} else {
ret = power_up(sd);
if (ret) {
v4l2_err(sd, "cam sensor power up fail\n");
return ret;
}
return __s5k6b2yx_init(sd, 0);
}
}
static int s5k6b2yx_s_power(struct v4l2_subdev *sd, int on)
{
int ret;
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
mutex_lock(&dev->input_lock);
ret = __s5k6b2yx_s_power(sd, on);
mutex_unlock(&dev->input_lock);
return ret;
}
/* This returns the exposure time being used. This should only be used
for filling in EXIF data, not for actual image processing. */
static int s5k6b2yx_q_exposure(struct v4l2_subdev *sd, s32 *value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u16 coarse;
int ret;
/* the fine integration time is currently not calculated */
ret = s5k6b2yx_read_reg(client, S5K6B2YX_16BIT,
S5K6B2YX_COARSE_INTEGRATION_TIME, &coarse);
*value = coarse;
return ret;
}
static int s5k6b2yx_get_intg_factor(struct i2c_client *client,
struct camera_mipi_info *info)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
u32 vt_pix_clk_div;
u32 vt_sys_clk_div;
u32 pre_pll_clk_div;
u32 pll_multiplier;
const int ext_clk_freq_hz = 19200000;
struct atomisp_sensor_mode_data *buf = &info->data;
int ret;
u16 data[S5K6B2YX_INTG_BUF_COUNT];
u32 vt_pix_clk_freq_mhz;
u32 fine_integration_time;
u32 frame_length_lines;
u32 line_length_pck;
u32 div;
if (info == NULL)
return -EINVAL;
memset(data, 0, S5K6B2YX_INTG_BUF_COUNT * sizeof(u16));
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_VT_PIX_CLK_DIV, data);
if (ret)
return ret;
vt_pix_clk_div = data[0];
memset(data, 0, S5K6B2YX_INTG_BUF_COUNT * sizeof(u16));
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_VT_SYS_CLK_DIV, data);
if (ret)
return ret;
vt_sys_clk_div = data[0];
memset(data, 0, S5K6B2YX_INTG_BUF_COUNT * sizeof(u16));
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_PRE_PLL_CLK_DIV, data);
if (ret)
return ret;
pre_pll_clk_div = data[0];
memset(data, 0, S5K6B2YX_INTG_BUF_COUNT * sizeof(u16));
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_PLL_MULTIPLIER, data);
if (ret)
return ret;
pll_multiplier = data[0];
memset(data, 0, S5K6B2YX_INTG_BUF_COUNT * sizeof(u16));
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_FINE_INTEGRATION_TIME, data);
if (ret)
return ret;
fine_integration_time = data[0];
memset(data, 0, S5K6B2YX_INTG_BUF_COUNT * sizeof(u16));
ret = s5k6b2yx_read_reg(client, 4, S5K6B2YX_FRAME_LENGTH_LINES, data);
if (ret)
return ret;
frame_length_lines = data[0];
line_length_pck = data[1];
div = pre_pll_clk_div * vt_sys_clk_div*vt_pix_clk_div;
if (div == 0)
return -EINVAL;
vt_pix_clk_freq_mhz = ext_clk_freq_hz / div;
vt_pix_clk_freq_mhz *= pll_multiplier;
dev->vt_pix_clk_freq_mhz = vt_pix_clk_freq_mhz;
buf->vt_pix_clk_freq_mhz = vt_pix_clk_freq_mhz;
buf->coarse_integration_time_min =
S5K6B2YX_COARSE_INTEGRATION_TIME_MIN;
buf->coarse_integration_time_max_margin =
S5K6B2YX_COARSE_INTEGRATION_TIME_MARGIN;
buf->fine_integration_time_min = S5K6B2YX_FINE_INTG_TIME_MIN;
buf->fine_integration_time_max_margin = S5K6B2YX_FINE_INTG_TIME_MAX_MARGIN;
buf->fine_integration_time_def = S5K6B2YX_FINE_INTG_TIME_MIN;
buf->line_length_pck = line_length_pck;
buf->frame_length_lines = frame_length_lines;
buf->read_mode = 0;
/* 1:binning enabled, 0:disabled */
buf->binning_factor_x = 1;
buf->binning_factor_y = 1;
/* Get the cropping and output resolution to ISP for this mode. */
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_HORIZONTAL_START_H, data);
if (ret)
return ret;
buf->crop_horizontal_start = data[0];
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_VERTICAL_START_H, data);
if (ret)
return ret;
buf->crop_vertical_start = data[0];
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_HORIZONTAL_END_H, data);
if (ret)
return ret;
buf->crop_horizontal_end = data[0];
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_VERTICAL_END_H, data);
if (ret)
return ret;
buf->crop_vertical_end = data[0];
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_HORIZONTAL_OUTPUT_SIZE_H, data);
if (ret)
return ret;
buf->output_width = data[0];
ret = s5k6b2yx_read_reg(client, 2, S5K6B2YX_VERTICAL_OUTPUT_SIZE_H, data);
if (ret)
return ret;
buf->output_height = data[0];
return 0;
}
/*
* distance - calculate the distance
* @res: resolution
* @w: width
* @h: height
*
* Get the gap between resolution and w/h.
* res->width/height smaller than w/h wouldn't be considered.
* Returns the value of gap or -1 if fail.
*/
#define LARGEST_ALLOWED_RATIO_MISMATCH 600
static int distance(struct s5k6b2yx_resolution *res, u32 w, u32 h)
{
unsigned int w_ratio = ((res->width << 13) / w);
unsigned int h_ratio;
int match;
if (h == 0)
return -1;
h_ratio = ((res->height << 13) / h);
if (h_ratio == 0)
return -1;
match = abs(((w_ratio << 13) / h_ratio) - ((int)8192));
if ((w_ratio < (int)8192) || (h_ratio < (int)8192) ||
(match > LARGEST_ALLOWED_RATIO_MISMATCH))
return -1;
return w_ratio + h_ratio;
}
/* Return the nearest higher resolution index */
static int nearest_resolution_index(int w, int h)
{
int i;
int idx = -1;
int dist;
int min_dist = INT_MAX;
struct s5k6b2yx_resolution *tmp_res = NULL;
for (i = 0; i < N_RES; i++) {
tmp_res = &s5k6b2yx_res[i];
dist = distance(tmp_res, w, h);
if (dist == -1)
continue;
if (dist < min_dist) {
min_dist = dist;
idx = i;
}
}
return idx;
}
static int s5k6b2yx_try_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int idx;
mutex_lock(&dev->input_lock);
if ((fmt->width > S5K6B2YX_RES_WIDTH_MAX) ||
(fmt->height > S5K6B2YX_RES_HEIGHT_MAX)) {
fmt->width = S5K6B2YX_RES_WIDTH_MAX;
fmt->height = S5K6B2YX_RES_HEIGHT_MAX;
fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
} else {
idx = nearest_resolution_index(fmt->width, fmt->height);
/*
* nearest_resolution_index() doesn't return smaller
* resolutions. If it fails, it means the requested
* resolution is higher than wecan support. Fallback
* to highest possible resolution in this case.
*/
if (idx == -1)
idx = N_RES - 1;
fmt->width = s5k6b2yx_res[idx].width;
fmt->height = s5k6b2yx_res[idx].height;
fmt->code = s5k6b2yx_res[idx].code;
}
mutex_unlock(&dev->input_lock);
return 0;
}
static int s5k6b2yx_set_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
const struct s5k6b2yx_reg *s5k6b2yx_def_reg;
struct camera_mipi_info *s5k6b2yx_info = NULL;
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
u8 tmp;
int vflip, hflip;
s5k6b2yx_info = v4l2_get_subdev_hostdata(sd);
if (s5k6b2yx_info == NULL)
return -EINVAL;
ret = s5k6b2yx_try_mbus_fmt(sd, fmt);
if (ret) {
v4l2_err(sd, "try fmt fail\n");
return ret;
}
mutex_lock(&dev->input_lock);
dev->fmt_idx = nearest_resolution_index(fmt->width, fmt->height);
/* Sanity check */
if (unlikely(dev->fmt_idx == -1)) {
mutex_unlock(&dev->input_lock);
v4l2_err(sd, "get resolution fail\n");
return -EINVAL;
}
s5k6b2yx_def_reg = s5k6b2yx_res[dev->fmt_idx].regs;
if (s5k6b2yx_res[dev->fmt_idx].mode != dev->mode) {
dev->platform_data->gpio_ctrl(sd,
s5k6b2yx_res[dev->fmt_idx].mode);
dev->mode = s5k6b2yx_res[dev->fmt_idx].mode;
}
s5k6b2yx_info->input_format = s5k6b2yx_raw_bayer_order[dev->mode];
/* enable group hold */
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_param_hold);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_def_reg);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
/* disable group hold */
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_param_update);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
dev->fps = s5k6b2yx_res[dev->fmt_idx].fps;
dev->pixels_per_line = s5k6b2yx_res[dev->fmt_idx].pixels_per_line;
dev->lines_per_frame = s5k6b2yx_res[dev->fmt_idx].lines_per_frame;
dev->coarse_itg = 0;
dev->fine_itg = 0;
dev->gain = 0;
if (dev->mode == CAM_VIS_STBY)
goto out;
ret = s5k6b2yx_get_intg_factor(client, s5k6b2yx_info);
if (ret) {
v4l2_err(sd, "failed to get integration_factor\n");
mutex_unlock(&dev->input_lock);
return -EINVAL;
}
ret = s5k6b2yx_read_reg(client, S5K6B2YX_8BIT,
S5K6B2YX_IMG_ORIENTATION, (u16 *)&tmp);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
hflip = tmp & S5K6B2YX_HFLIP_BIT;
vflip = (tmp & S5K6B2YX_VFLIP_BIT) >> S5K6B2YX_VFLIP_OFFSET;
s5k6b2yx_info->raw_bayer_order =
s5k6b2yx_bayer_order_mapping[vflip][hflip];
out:
mutex_unlock(&dev->input_lock);
return 0;
}
static int s5k6b2yx_g_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
if (!fmt)
return -EINVAL;
fmt->width = s5k6b2yx_res[dev->fmt_idx].width;
fmt->height = s5k6b2yx_res[dev->fmt_idx].height;
fmt->code = s5k6b2yx_res[dev->fmt_idx].code;
return 0;
}
static int s5k6b2yx_g_focal(struct v4l2_subdev *sd, s32 *val)
{
*val = (S5K6B2YX_FOCAL_LENGTH_NUM << 16) | S5K6B2YX_FOCAL_LENGTH_DEM;
return 0;
}
static int s5k6b2yx_g_fnumber(struct v4l2_subdev *sd, s32 *val)
{
/*const f number for s5k6b2yx*/
*val = (S5K6B2YX_F_NUMBER_DEFAULT_NUM << 16) | S5K6B2YX_F_NUMBER_DEM;
return 0;
}
static int s5k6b2yx_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
{
*val = (S5K6B2YX_F_NUMBER_DEFAULT_NUM << 24) |
(S5K6B2YX_F_NUMBER_DEM << 16) |
(S5K6B2YX_F_NUMBER_DEFAULT_NUM << 8) | S5K6B2YX_F_NUMBER_DEM;
return 0;
}
/* Horizontal flip the image. */
static int s5k6b2yx_t_hflip(struct v4l2_subdev *sd, int value)
{
struct i2c_client *c = v4l2_get_subdevdata(sd);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int ret;
u16 val;
/* enable group hold */
ret = s5k6b2yx_write_reg_array(c, s5k6b2yx_param_hold);
ret = s5k6b2yx_read_reg(c, S5K6B2YX_8BIT, S5K6B2YX_IMG_ORIENTATION, &val);
if (ret)
return ret;
if (value)
val |= S5K6B2YX_HFLIP_BIT;
else
val &= ~S5K6B2YX_HFLIP_BIT;
ret = s5k6b2yx_write_reg(c, S5K6B2YX_8BIT, S5K6B2YX_IMG_ORIENTATION, val);
if (ret)
return ret;
ret = s5k6b2yx_write_reg_array(c, s5k6b2yx_param_update);
dev->flip = val;
return ret;
}
/* Vertically flip the image */
static int s5k6b2yx_t_vflip(struct v4l2_subdev *sd, int value)
{
struct i2c_client *c = v4l2_get_subdevdata(sd);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int ret;
u16 val;
/* enable group hold */
ret = s5k6b2yx_write_reg_array(c, s5k6b2yx_param_hold);
ret = s5k6b2yx_read_reg(c, S5K6B2YX_8BIT, S5K6B2YX_IMG_ORIENTATION, &val);
if (ret)
return ret;
if (value)
val |= S5K6B2YX_VFLIP_BIT;
else
val &= ~S5K6B2YX_VFLIP_BIT;
ret = s5k6b2yx_write_reg(c, S5K6B2YX_8BIT, S5K6B2YX_IMG_ORIENTATION, val);
if (ret)
return ret;
ret = s5k6b2yx_write_reg_array(c, s5k6b2yx_param_update);
dev->flip = val;
return ret;
}
static int s5k6b2yx_test_pattern(struct v4l2_subdev *sd, s32 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return s5k6b2yx_write_reg(client, S5K6B2YX_8BIT,
S5K6B2YX_TEST_PATTERN_MODE, value);
}
static int s5k6b2yx_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
*val = s5k6b2yx_res[dev->fmt_idx].bin_factor_x;
return 0;
}
static int s5k6b2yx_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
*val = s5k6b2yx_res[dev->fmt_idx].bin_factor_y;
return 0;
}
static struct s5k6b2yx_control s5k6b2yx_controls[] = {
{
.qc = {
.id = V4L2_CID_EXPOSURE_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "exposure",
.minimum = 0x0,
.maximum = 0xffff,
.step = 0x01,
.default_value = 0x00,
.flags = 0,
},
.query = s5k6b2yx_q_exposure,
},
{
.qc = {
.id = V4L2_CID_TEST_PATTERN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Test pattern",
.minimum = 0,
.maximum = 0xffff,
.step = 1,
.default_value = 0,
},
.tweak = s5k6b2yx_test_pattern,
},
{
.qc = {
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Image v-Flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.tweak = s5k6b2yx_t_vflip,
},
{
.qc = {
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Image h-Flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.tweak = s5k6b2yx_t_hflip,
},
{
.qc = {
.id = V4L2_CID_FOCAL_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "focal length",
.minimum = S5K6B2YX_FOCAL_LENGTH_DEFAULT,
.maximum = S5K6B2YX_FOCAL_LENGTH_DEFAULT,
.step = 0x01,
.default_value = S5K6B2YX_FOCAL_LENGTH_DEFAULT,
.flags = 0,
},
.query = s5k6b2yx_g_focal,
},
{
.qc = {
.id = V4L2_CID_FNUMBER_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "f-number",
.minimum = S5K6B2YX_F_NUMBER_DEFAULT,
.maximum = S5K6B2YX_F_NUMBER_DEFAULT,
.step = 0x01,
.default_value = S5K6B2YX_F_NUMBER_DEFAULT,
.flags = 0,
},
.query = s5k6b2yx_g_fnumber,
},
{
.qc = {
.id = V4L2_CID_FNUMBER_RANGE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "f-number range",
.minimum = S5K6B2YX_F_NUMBER_RANGE,
.maximum = S5K6B2YX_F_NUMBER_RANGE,
.step = 0x01,
.default_value = S5K6B2YX_F_NUMBER_RANGE,
.flags = 0,
},
.query = s5k6b2yx_g_fnumber_range,
},
{
.qc = {
.id = V4L2_CID_BIN_FACTOR_HORZ,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "horizontal binning factor",
.minimum = 0,
.maximum = S5K6B2YX_BIN_FACTOR_MAX,
.step = 1,
.default_value = 0,
.flags = 0,
},
.query = s5k6b2yx_g_bin_factor_x,
},
{
.qc = {
.id = V4L2_CID_BIN_FACTOR_VERT,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "vertical binning factor",
.minimum = 0,
.maximum = S5K6B2YX_BIN_FACTOR_MAX,
.step = 1,
.default_value = 0,
.flags = 0,
},
.query = s5k6b2yx_g_bin_factor_y,
},
};
#define N_CONTROLS (ARRAY_SIZE(s5k6b2yx_controls))
static long __s5k6b2yx_set_exposure(struct v4l2_subdev *sd, u16 coarse_itg, u16 gain)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
u16 lines_per_frame;
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
/* Validate exposure: cannot exceed VTS-4 where VTS is 16bit */
coarse_itg = clamp_t(u16, coarse_itg,
S5K6B2YX_COARSE_INTEGRATION_TIME_MIN,
S5K6B2YX_MAX_EXPOSURE_SUPPORTED);
/* Validate gain: must not exceed maximum 8bit value */
gain = clamp_t(u16, gain, S5K6B2YX_MIN_GLOBAL_GAIN_SUPPORTED,
S5K6B2YX_MAX_GLOBAL_GAIN_SUPPORTED);
/* enable group hold */
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_param_hold);
if (ret)
goto out;
/* check coarse integration time margin */
if (coarse_itg > dev->lines_per_frame -
S5K6B2YX_COARSE_INTEGRATION_TIME_MARGIN)
lines_per_frame = coarse_itg +
S5K6B2YX_COARSE_INTEGRATION_TIME_MARGIN;
else
lines_per_frame = dev->lines_per_frame;
ret = s5k6b2yx_write_reg(client, S5K6B2YX_16BIT,
S5K6B2YX_FRAME_LENGTH_LINES,
lines_per_frame);
if (ret)
goto out_disable;
/* set exposure gain */
ret = s5k6b2yx_write_reg(client, S5K6B2YX_16BIT,
S5K6B2YX_COARSE_INTEGRATION_TIME,
coarse_itg);
if (ret)
goto out_disable;
/* set analogue gain */
ret = s5k6b2yx_write_reg(client, S5K6B2YX_16BIT,
S5K6B2YX_GLOBAL_GAIN, gain);
if (ret)
goto out_disable;
dev->gain = gain;
dev->coarse_itg = coarse_itg;
out_disable:
s5k6b2yx_write_reg_array(client, s5k6b2yx_param_update);
out:
return ret;
}
static int s5k6b2yx_set_exposure(struct v4l2_subdev *sd, u16 exposure, u16 gain)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int ret;
mutex_lock(&dev->input_lock);
ret = __s5k6b2yx_set_exposure(sd, exposure, gain);
mutex_unlock(&dev->input_lock);
return ret;
}
static long s5k6b2yx_s_exposure(struct v4l2_subdev *sd,
struct atomisp_exposure *exposure)
{
u16 coarse_itg, gain;
coarse_itg = exposure->integration_time[0];
gain = exposure->gain[0];
return s5k6b2yx_set_exposure(sd, coarse_itg, gain);
}
static long s5k6b2yx_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
switch (cmd) {
case ATOMISP_IOC_S_EXPOSURE:
return s5k6b2yx_s_exposure(sd, (struct atomisp_exposure *)arg);
default:
return -EINVAL;
}
return 0;
}
static struct s5k6b2yx_control *s5k6b2yx_find_control(__u32 id)
{
int i;
for (i = 0; i < N_CONTROLS; i++) {
if (s5k6b2yx_controls[i].qc.id == id)
return &s5k6b2yx_controls[i];
}
return NULL;
}
static int s5k6b2yx_detect(struct i2c_client *client, u16 *id, u8 *revision)
{
struct i2c_adapter *adapter = client->adapter;
u16 high, low, rev;
/* i2c check */
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return -ENODEV;
/* check sensor chip ID */
if (s5k6b2yx_read_reg(client, S5K6B2YX_8BIT, S5K6B2YX_PID_HIGH,
&high)) {
dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
return -ENODEV;
}
if (s5k6b2yx_read_reg(client, S5K6B2YX_8BIT, S5K6B2YX_PID_LOW,
&low)) {
dev_err(&client->dev, "sensor_id_low = 0x%x\n", low);
return -ENODEV;
}
*id = (((u8) high) << 8) | (u8) low;
if (*id != S5K6B2YX_MOD_ID) {
dev_err(&client->dev, "main sensor s5k6b2yx ID error\n");
return -ENODEV;
}
if (s5k6b2yx_read_reg(client, S5K6B2YX_8BIT, S5K6B2YX_REV,
&rev)) {
dev_err(&client->dev, "sensor_id_low = 0x%x\n", rev);
return -ENODEV;
}
*revision = rev;
return 0;
}
static int
s5k6b2yx_s_config(struct v4l2_subdev *sd, int irq, void *platform_data)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 sensor_revision;
u16 sensor_id;
int ret;
if (NULL == platform_data)
return -ENODEV;
dev->platform_data =
(struct camera_sensor_platform_data *)platform_data;
dev->platform_data->platform_init(client);
mutex_lock(&dev->input_lock);
ret = __s5k6b2yx_s_power(sd, 1);
if (ret) {
mutex_unlock(&dev->input_lock);
dev_err(&client->dev, "s5k6b2yx power-up err");
return ret;
}
/* config & detect sensor */
ret = s5k6b2yx_detect(client, &sensor_id, &sensor_revision);
if (ret) {
dev_err(&client->dev, "s5k6b2yx_detect err s_config.\n");
goto fail_detect;
}
dev->sensor_id = sensor_id;
dev->sensor_revision = sensor_revision;
ret = dev->platform_data->csi_cfg(sd, 1);
if (ret)
goto fail_csi_cfg;
ret = __s5k6b2yx_s_power(sd, 0);
mutex_unlock(&dev->input_lock);
if (ret) {
dev_err(&client->dev, "s5k6b2yx power down err\n");
return ret;
}
return 0;
fail_csi_cfg:
dev->platform_data->csi_cfg(sd, 0);
fail_detect:
__s5k6b2yx_s_power(sd, 0);
mutex_unlock(&dev->input_lock);
dev_err(&client->dev, "s5k6b2yx sensor power-gating failed\n");
return ret;
}
static int s5k6b2yx_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
struct s5k6b2yx_control *ctrl = s5k6b2yx_find_control(qc->id);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
if (ctrl == NULL)
return -EINVAL;
mutex_lock(&dev->input_lock);
*qc = ctrl->qc;
mutex_unlock(&dev->input_lock);
return 0;
}
static int s5k6b2yx_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct s5k6b2yx_control *octrl = s5k6b2yx_find_control(ctrl->id);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int ret;
if (octrl == NULL)
return -EINVAL;
mutex_lock(&dev->input_lock);
ret = octrl->query(sd, &ctrl->value);
mutex_unlock(&dev->input_lock);
return ret;
}
static int s5k6b2yx_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct s5k6b2yx_control *octrl = s5k6b2yx_find_control(ctrl->id);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
int ret;
if (!octrl || !octrl->tweak)
return -EINVAL;
mutex_lock(&dev->input_lock);
ret = octrl->tweak(sd, ctrl->value);
mutex_unlock(&dev->input_lock);
return ret;
}
static int s5k6b2yx_recovery(struct v4l2_subdev *sd)
{
int ret;
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
ret = __s5k6b2yx_s_power(sd, 0);
if (ret) {
dev_err(&client->dev, "power-down err.\n");
return ret;
}
ret = __s5k6b2yx_s_power(sd, 1);
if (ret) {
dev_err(&client->dev, "power-up err.\n");
return ret;
}
if (s5k6b2yx_res[dev->fmt_idx].mode != dev->mode) {
dev->platform_data->gpio_ctrl(sd,
s5k6b2yx_res[dev->fmt_idx].mode);
dev->mode = s5k6b2yx_res[dev->fmt_idx].mode;
}
/* enable group hold */
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_param_hold);
if (ret)
return ret;
ret = s5k6b2yx_write_reg(client, S5K6B2YX_8BIT, S5K6B2YX_IMG_ORIENTATION,
dev->flip);
if (ret)
return ret;
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_res[dev->fmt_idx].regs);
if (ret)
return ret;
/* disable group hold */
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_param_update);
if (ret)
return ret;
return ret;
}
static int s5k6b2yx_s_stream(struct v4l2_subdev *sd, int enable)
{
int ret;
u16 id;
u8 rev;
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
mutex_lock(&dev->input_lock);
if (enable) {
ret = s5k6b2yx_detect(client, &id, &rev);
if (ret) {
ret = s5k6b2yx_recovery(sd);
if (ret) {
dev_err(&client->dev, "recovery err.\n");
mutex_unlock(&dev->input_lock);
return ret;
}
}
if (dev->mode == CAM_SW_STBY)
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_streaming);
else
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_vis_streaming);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
dev->streaming = 1;
} else {
if (dev->mode == CAM_SW_STBY)
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_suspend);
else
ret = s5k6b2yx_write_reg_array(client, s5k6b2yx_vis_suspend);
if (ret != 0) {
mutex_unlock(&dev->input_lock);
return ret;
}
dev->streaming = 0;
}
mutex_unlock(&dev->input_lock);
return 0;
}
/*
* s5k6b2yx enum frame size, frame intervals
*/
static int s5k6b2yx_enum_framesizes(struct v4l2_subdev *sd,
struct v4l2_frmsizeenum *fsize)
{
unsigned int index = fsize->index;
if (index >= N_RES)
return -EINVAL;
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = s5k6b2yx_res[index].width;
fsize->discrete.height = s5k6b2yx_res[index].height;
fsize->reserved[0] = s5k6b2yx_res[index].used;
return 0;
}
static int s5k6b2yx_enum_frameintervals(struct v4l2_subdev *sd,
struct v4l2_frmivalenum *fival)
{
int i;
/* since the isp will donwscale the resolution to the right size,
* find the nearest one that will allow the isp to do so
* important to ensure that the resolution requested is padded
* correctly by the requester, which is the atomisp driver in
* this case.
*/
i = nearest_resolution_index(fival->width, fival->height);
if (i == -1)
return -EINVAL;
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fival->width = s5k6b2yx_res[i].width;
fival->height = s5k6b2yx_res[i].height;
fival->discrete.numerator = 1;
fival->discrete.denominator = s5k6b2yx_res[i].fps;
return 0;
}
static int s5k6b2yx_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
enum v4l2_mbus_pixelcode *code)
{
if (index >= MAX_FMTS)
return -EINVAL;
*code = V4L2_MBUS_FMT_SGRBG10_1X10;
return 0;
}
static int
s5k6b2yx_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_S5K6B2YX, 0);
}
static int
s5k6b2yx_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index >= MAX_FMTS)
return -EINVAL;
code->code = V4L2_MBUS_FMT_SGRBG10_1X10;
return 0;
}
static int
s5k6b2yx_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_frame_size_enum *fse)
{
int index = fse->index;
if (index >= N_RES)
return -EINVAL;
fse->min_width = s5k6b2yx_res[index].width;
fse->min_height = s5k6b2yx_res[index].height;
fse->max_width = s5k6b2yx_res[index].width;
fse->max_height = s5k6b2yx_res[index].height;
return 0;
}
static struct v4l2_mbus_framefmt *
__s5k6b2yx_get_pad_format(struct s5k6b2yx_device *sensor,
struct v4l2_subdev_fh *fh, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &sensor->format;
default:
return NULL;
}
}
static int
s5k6b2yx_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
struct v4l2_mbus_framefmt *format =
__s5k6b2yx_get_pad_format(dev, fh, fmt->pad, fmt->which);
fmt->format = *format;
return 0;
}
static int
s5k6b2yx_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
dev->format = fmt->format;
return 0;
}
static int
s5k6b2yx_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *param)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
dev->run_mode = param->parm.capture.capturemode;
mutex_lock(&dev->input_lock);
switch (dev->run_mode) {
case CI_MODE_VIDEO:
s5k6b2yx_res = s5k6b2yx_res_video;
N_RES = N_RES_VIDEO;
break;
case CI_MODE_STILL_CAPTURE:
s5k6b2yx_res = s5k6b2yx_res_still;
N_RES = N_RES_STILL;
break;
default:
s5k6b2yx_res = s5k6b2yx_res_preview;
N_RES = N_RES_PREVIEW;
}
mutex_unlock(&dev->input_lock);
return 0;
}
int
s5k6b2yx_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *interval)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
u16 lines_per_frame;
/*
* if no specific information to calculate the fps,
* just used the value in sensor settings
*/
if (!dev->pixels_per_line || !dev->lines_per_frame) {
interval->interval.numerator = 1;
interval->interval.denominator = dev->fps;
return 0;
}
/*
* DS: if coarse_integration_time is set larger than
* lines_per_frame the frame_size will be expanded to
* coarse_integration_time+1
*/
if (dev->coarse_itg > dev->lines_per_frame -
S5K6B2YX_COARSE_INTEGRATION_TIME_MARGIN) {
if (dev->coarse_itg > S5K6B2YX_MAX_EXPOSURE_SUPPORTED) {
lines_per_frame = dev->coarse_itg;
} else {
lines_per_frame = dev->coarse_itg +
S5K6B2YX_COARSE_INTEGRATION_TIME_MARGIN;
}
} else {
lines_per_frame = dev->lines_per_frame;
}
interval->interval.numerator = dev->pixels_per_line *
lines_per_frame;
interval->interval.denominator = dev->vt_pix_clk_freq_mhz;
return 0;
}
static int s5k6b2yx_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
{
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
mutex_lock(&dev->input_lock);
*frames = s5k6b2yx_res[dev->fmt_idx].skip_frames;
mutex_unlock(&dev->input_lock);
return 0;
}
static int s5k6b2yx_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct s5k6b2yx_device *dev = container_of(ctrl->handler,
struct s5k6b2yx_device, ctrl_handler);
unsigned int val;
switch (ctrl->id) {
case V4L2_CID_LINK_FREQ:
val = s5k6b2yx_res[dev->fmt_idx].mipi_freq;
if (val == 0)
return -EINVAL;
ctrl->val = val * 1000; /* To Hz */
break;
default:
return -EINVAL;
}
return 0;
}
static struct v4l2_ctrl_ops s5k6b2yx_ctrl_ops = {
.g_volatile_ctrl = s5k6b2yx_g_volatile_ctrl,
};
static const struct v4l2_ctrl_config v4l2_ctrl_link_freq = {
.ops = &s5k6b2yx_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 const struct v4l2_subdev_sensor_ops s5k6b2yx_sensor_ops = {
.g_skip_frames = s5k6b2yx_g_skip_frames,
};
static const struct v4l2_subdev_video_ops s5k6b2yx_video_ops = {
.try_mbus_fmt = s5k6b2yx_try_mbus_fmt,
.s_mbus_fmt = s5k6b2yx_set_mbus_fmt,
.s_stream = s5k6b2yx_s_stream,
.enum_framesizes = s5k6b2yx_enum_framesizes,
.enum_frameintervals = s5k6b2yx_enum_frameintervals,
.s_parm = s5k6b2yx_s_parm,
.g_mbus_fmt = s5k6b2yx_g_mbus_fmt,
.enum_mbus_fmt = s5k6b2yx_enum_mbus_fmt,
.g_frame_interval = s5k6b2yx_g_frame_interval,
};
static const struct v4l2_subdev_core_ops s5k6b2yx_core_ops = {
.g_chip_ident = s5k6b2yx_g_chip_ident,
.queryctrl = s5k6b2yx_queryctrl,
.g_ctrl = s5k6b2yx_g_ctrl,
.s_ctrl = s5k6b2yx_s_ctrl,
.ioctl = s5k6b2yx_ioctl,
.s_power = s5k6b2yx_s_power,
.init = s5k6b2yx_init,
};
static const struct v4l2_subdev_pad_ops s5k6b2yx_pad_ops = {
.enum_mbus_code = s5k6b2yx_enum_mbus_code,
.enum_frame_size = s5k6b2yx_enum_frame_size,
.get_fmt = s5k6b2yx_get_pad_format,
.set_fmt = s5k6b2yx_set_pad_format,
};
static const struct v4l2_subdev_ops s5k6b2yx_ops = {
.core = &s5k6b2yx_core_ops,
.video = &s5k6b2yx_video_ops,
.pad = &s5k6b2yx_pad_ops,
.sensor = &s5k6b2yx_sensor_ops,
};
static const struct media_entity_operations s5k6b2yx_entity_ops = {
.link_setup = NULL,
};
static int s5k6b2yx_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct s5k6b2yx_device *dev = to_s5k6b2yx_sensor(sd);
dev->platform_data->csi_cfg(sd, 0);
v4l2_device_unregister_subdev(sd);
kfree(dev);
return 0;
}
static int __s5k6b2yx_init_ctrl_handler(struct s5k6b2yx_device *dev)
{
struct v4l2_ctrl_handler *hdl;
hdl = &dev->ctrl_handler;
v4l2_ctrl_handler_init(&dev->ctrl_handler, 3);
dev->link_freq = v4l2_ctrl_new_custom(&dev->ctrl_handler,
&v4l2_ctrl_link_freq, NULL);
if (dev->ctrl_handler.error || dev->link_freq == NULL)
return dev->ctrl_handler.error;
dev->sd.ctrl_handler = hdl;
return 0;
}
static int s5k6b2yx_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct s5k6b2yx_device *dev;
int ret = 0;
/* allocate sensor device & init sub device */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) {
dev_err(&client->dev, "%s: out of memory\n", __func__);
return -ENOMEM;
}
mutex_init(&dev->input_lock);
dev->fmt_idx = 0;
v4l2_i2c_subdev_init(&(dev->sd), client, &s5k6b2yx_ops);
if (client->dev.platform_data) {
ret = s5k6b2yx_s_config(&dev->sd, client->irq,
client->dev.platform_data);
if (ret) {
dev_err(&client->dev, "%s: configuration fail!!\n",
__func__);
goto out_free;
}
}
ret = __s5k6b2yx_init_ctrl_handler(dev);
if (ret) {
dev_err(&client->dev, "%s: init ctrl handler fail!!\n", __func__);
goto out_ctrl_handler_free;
}
dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
dev->pad.flags = MEDIA_PAD_FL_SOURCE;
dev->format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
dev->sd.entity.ops = &s5k6b2yx_entity_ops;
dev->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
dev->flip = 0;
ret = media_entity_init(&dev->sd.entity, 1, &dev->pad, 0);
if (ret)
s5k6b2yx_remove(client);
v4l2_info(client, "%s: done!!\n", __func__);
return ret;
out_ctrl_handler_free:
v4l2_ctrl_handler_free(&dev->ctrl_handler);
out_free:
v4l2_device_unregister_subdev(&dev->sd);
kfree(dev);
return ret;
}
static const struct i2c_device_id s5k6b2yx_id[] = {
{S5K6B2YX_NAME, 0},
{ }
};
MODULE_DEVICE_TABLE(i2c, s5k6b2yx_id);
static struct i2c_driver s5k6b2yx_driver = {
.driver = {
.owner = THIS_MODULE,
.name = S5K6B2YX_NAME,
},
.probe = s5k6b2yx_probe,
.remove = s5k6b2yx_remove,
.id_table = s5k6b2yx_id,
};
static __init int init_s5k6b2yx(void)
{
return i2c_add_driver(&s5k6b2yx_driver);
}
static __exit void exit_s5k6b2yx(void)
{
i2c_del_driver(&s5k6b2yx_driver);
}
module_init(init_s5k6b2yx);
module_exit(exit_s5k6b2yx);
MODULE_DESCRIPTION("A low-level driver for S5K6B2YX sensor");
MODULE_AUTHOR("Max Kim <max.kim@intel.com>");
MODULE_LICENSE("GPL");
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