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android_kernel_modules_leno.../camera/drivers/media/i2c/ov9760.c

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/*
* Support for OV9760 720P camera sensor.
*
* Copyright (c) 2012 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 <linux/firmware.h>
#include "ov9760.h"
#ifndef __KERNEL__
#define __KERNEL__
#endif
#include "ov9760_bld_otp.c"
#define DEBUG_VERBOSE (1<<0)
#define DEBUG_GAIN_EXP (1<<1)
#define DEBUG_INTG_FACT (1<<2)
#define DEBUG_OTP (1<<4)
#define OV9760_OTP_NAME "ov9760_otp.bin"
u8 ov9760_data[DATA_BUF_SIZE];
u8 otp_data[DATA_BUF_SIZE];
u32 ov9760_size = 0;
u32 otp_size = DATA_BUF_SIZE;
static unsigned int debug = 0x00;
module_param(debug, int, S_IRUGO|S_IWUSR);
#define OV9760_DEFAULT_LOG_LEVEL 1
static unsigned int log_level = OV9760_DEFAULT_LOG_LEVEL;
module_param(log_level, int, 0644);
#define OV9760_LOG(level, a, ...) \
do { \
if (level < log_level) \
printk(a,## __VA_ARGS__); \
} while (0)
unsigned int cmd_data, gpio_no_value, op_dump_otp;
struct i2c_client *gclient = NULL;
static int ov9760_read_i2c(const char *val, struct kernel_param *kp);
static int ov9760_set_gpio(const char *val, struct kernel_param *kp);
static int ov9760_get_gpio(const char *val, struct kernel_param *kp);
static int ov9760_dump_otp(const char *val, struct kernel_param *kp);
module_param_call(read_i2c, ov9760_read_i2c, param_get_uint,
&cmd_data, S_IRUGO | S_IWUSR);
module_param_call(gpio_set, ov9760_set_gpio, param_get_uint,
&gpio_no_value, S_IRUGO | S_IWUSR);
module_param_call(gpio_get, ov9760_get_gpio, param_get_uint,
&gpio_no_value, S_IRUGO | S_IWUSR);
module_param_call(dump_otp, ov9760_dump_otp, param_get_uint,
&op_dump_otp, S_IRUGO | S_IWUSR);
static int ov9760_dump_otp(const char *val, struct kernel_param *kp)
{
int ret;
ret = ov9760_otp_save(ov9760_data,ov9760_size,OV9760_SAVE_RAW_DATA);
if(ret != 0)
OV9760_LOG(2,"Fail to save ov9760 RAW data\n");
ret = ov9760_otp_save(otp_data,otp_size,OV9760_SAVE_OTP_DATA);
if(ret != 0)
OV9760_LOG(2,"Fail to save ov9760 OTP data\n");
return 0;
}
static int ov9760_set_gpio(const char *val, struct kernel_param *kp)
{
int gpio_number, gpio_value;
int rv = param_set_int(val, kp);
if (rv)
return rv;
gpio_number = gpio_no_value >> 16;
gpio_value = gpio_no_value & 0x01;
OV9760_LOG(1,"%s set gpio %d to %d\n", __func__, gpio_number, gpio_value);
gpio_set_value(gpio_number, gpio_value);
return 0;
}
static int ov9760_get_gpio(const char *val, struct kernel_param *kp)
{
int gpio_number = 0;
int rv = param_set_int(val, kp);
if (rv)
return rv;
gpio_number = gpio_no_value >> 16;
OV9760_LOG(1,"%s get gpio %d value:%d\n", __func__, gpio_number, gpio_get_value(gpio_number) & 0x01);
return 0;
}
static int ov9760_read_i2c(const char *val, struct kernel_param *kp)
{
u16 data;
int i, len;
int rv = param_set_int(val, kp);
if (rv)
return rv;
len = (cmd_data & 0xffff)%17;
if (gclient != NULL)
for (i = 0; i < len; i++) {
ov9760_read_reg(gclient, 1, (cmd_data >> 16) + i, &data);
OV9760_LOG(1,"addr:0x%x data:0x%x\n", (cmd_data >> 16) + i, data);
}
return 0;
}
/* the bayer order mapping table
* hflip=0 hflip=1
* vflip=0 atomisp_bayer_order_bggr atomisp_bayer_order_gbrg
* vflip=1 atomisp_bayer_order_grbg atomisp_bayer_order_rggb
*
* usage: ov9760_bayer_order_mapping[vflip][hflip]
*/
static const int ov9760_bayer_order_mapping[2][2] = {
{atomisp_bayer_order_bggr, atomisp_bayer_order_gbrg},
{atomisp_bayer_order_grbg, atomisp_bayer_order_rggb}
};
static int
ov9760_read_reg(struct i2c_client *client, u16 len, u16 reg, u16 *val)
{
struct i2c_msg msg[2];
u16 data[OV9760_SHORT_MAX] = {0};
int err, i;
if (len > OV9760_BYTE_MAX) {
v4l2_err(client, "%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;
err = i2c_transfer(client->adapter, msg, 2);
if (err != 2) {
if (err >= 0)
err = -EIO;
goto error;
}
/* high byte comes first */
if (len == OV9760_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 ov9760_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;
// printk("ov9760 msg.addr:%x,len: %u,buf:%p\r\n", msg.addr,msg.len,msg.buf);
ret = i2c_transfer(client->adapter, &msg, 1);
// printk("ov9760 i2c_transfer ret = %d\r\n",ret);
// ret = i2c_transfer(client->adapter, &msg, 1);
return ret == num_msg ? 0 : -EIO;
}
static int
ov9760_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 */
if (data_length != OV9760_8BIT && data_length != OV9760_16BIT) {
v4l2_err(client, "%s error, invalid data_length\n", __func__);
return -EINVAL;
}
/* high byte goes out first */
*wreg = cpu_to_be16(reg);
if (data_length == OV9760_8BIT) {
data[2] = (u8)(val);
} else {
/* OV9760_16BIT */
u16 *wdata = (u16 *)&data[2];
*wdata = cpu_to_be16(val);
}
ret = ov9760_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;
}
/*
* ov9760_write_reg_array - Initializes a list of OV9760 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().
*
* __ov9760_flush_reg_array, __ov9760_buf_reg_array() and
* __ov9760_write_reg_is_consecutive() are internal functions to
* ov9760_write_reg_array_fast() and should be not used anywhere else.
*
*/
static int __ov9760_flush_reg_array(struct i2c_client *client,
struct ov9760_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 ov9760_i2c_write(client, size, (u8 *)&ctrl->buffer);
}
static int __ov9760_buf_reg_array(struct i2c_client *client,
struct ov9760_write_ctrl *ctrl,
const struct ov9760_reg *next)
{
int size;
u16 *data16;
switch (next->type) {
case OV9760_8BIT:
size = 1;
ctrl->buffer.data[ctrl->index] = (u8)next->val;
break;
case OV9760_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->reg.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) >= OV9760_MAX_WRITE_BUF_SIZE)
return __ov9760_flush_reg_array(client, ctrl);
return 0;
}
static int
__ov9760_write_reg_is_consecutive(struct i2c_client *client,
struct ov9760_write_ctrl *ctrl,
const struct ov9760_reg *next)
{
if (ctrl->index == 0)
return 1;
return ctrl->buffer.addr + ctrl->index == next->reg.sreg;
}
static int ov9760_write_reg_array(struct i2c_client *client,
const struct ov9760_reg *reglist)
{
const struct ov9760_reg *next = reglist;
struct ov9760_write_ctrl ctrl;
int err;
ctrl.index = 0;
for (; next->type != OV9760_TOK_TERM; next++) {
switch (next->type & OV9760_TOK_MASK) {
case OV9760_TOK_DELAY:
err = __ov9760_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 (!__ov9760_write_reg_is_consecutive(client, &ctrl,
next)) {
err = __ov9760_flush_reg_array(client, &ctrl);
if (err)
return err;
}
err = __ov9760_buf_reg_array(client, &ctrl, next);
if (err) {
v4l2_err(client, "%s: write error, aborted\n",
__func__);
return err;
}
break;
}
}
return __ov9760_flush_reg_array(client, &ctrl);
}
static int __ov9760_init(struct v4l2_subdev *sd, u32 val)
{
int ret;
struct i2c_client *client = v4l2_get_subdevdata(sd);
ret = ov9760_write_reg_array(client, ov9760_init_config);
if (ret)
return ret;
/* restore settings */
ov9760_res = ov9760_res_preview;
N_RES = N_RES_PREVIEW;
return 0;
}
static int ov9760_init(struct v4l2_subdev *sd, u32 val)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
int ret = 0;
mutex_lock(&dev->input_lock);
ret = __ov9760_init(sd, val);
mutex_unlock(&dev->input_lock);
return ret;
}
static void ov9760_uninit(struct v4l2_subdev *sd)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
dev->coarse_itg = 0;
dev->fine_itg = 0;
dev->gain = 0;
}
static int power_up(struct v4l2_subdev *sd)
{
struct ov9760_device *dev = to_ov9760_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");
return -ENODEV;
}
/* power control */
ret = dev->platform_data->power_ctrl(sd, 1);
if (ret)
goto fail_power;
/* flis clock control */
ret = dev->platform_data->flisclk_ctrl(sd, 1);
if (ret)
goto fail_clk;
/* gpio ctrl */
ret = dev->platform_data->gpio_ctrl(sd, 1);
if (ret) {
dev_err(&client->dev, "gpio failed 1\n");
goto fail_gpio;
}
return 0;
fail_gpio:
dev->platform_data->gpio_ctrl(sd, 0);
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 ov9760_device *dev = to_ov9760_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");
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, 0);
if (ret)
dev_err(&client->dev, "gpio failed 1\n");
/* power control */
ret = dev->platform_data->power_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "vprog failed.\n");
return ret;
}
static int __ov9760_s_power(struct v4l2_subdev *sd, int power)
{
int ret = 0;
if (power == 0) {
ov9760_uninit(sd);
return power_down(sd);
} else {
ret = power_up(sd);
if (ret)
return -EINVAL;
ret = __ov9760_init(sd, 0);
if (ret) {
power_down(sd);
return ret;
}
}
return 0;
}
static int ov9760_s_power(struct v4l2_subdev *sd, int on)
{
int ret;
struct ov9760_device *dev = to_ov9760_sensor(sd);
mutex_lock(&dev->input_lock);
ret = __ov9760_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 ov9760_q_exposure(struct v4l2_subdev *sd, s32 *value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u16 tmp;
u16 coarse;
int ret;
/* the fine integration time is currently not calculated */
ret = ov9760_read_reg(client, OV9760_8BIT,
OV9760_COARSE_INTEGRATION_TIME_H, &tmp);
/* the fine integration time is currently not calculated */
ret = ov9760_read_reg(client, OV9760_16BIT,
OV9760_COARSE_INTEGRATION_TIME_M, &coarse);
coarse = (coarse >> 4) | ((tmp & 0xf) << 12);
*value = coarse;
return ret;
}
static int ov9760_get_intg_factor(struct i2c_client *client,
struct camera_mipi_info *info)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov9760_device *dev = to_ov9760_sensor(sd);
int ret;
u32 vt_pix_clk_div;
u32 vt_sys_clk_div;
u32 pll_pll1_pre_clk_div;
u32 pll_multiplier;
u32 mipi_div;
const int ext_clk_freq_hz = 19200000;
struct atomisp_sensor_mode_data *buf = &info->data;
int vt_pix_clk_freq_mhz;
u16 data[OV9760_INTG_BUF_COUNT];
u16 reg_0x30b0, reg_0x30b1, reg_0x30b2, reg_0x30b3, reg_0x30b4;
u16 reg_0x3010;
u32 coarse_integration_time_min;
u32 coarse_integration_time_max_margin;
u32 fine_integration_time_min;
u32 fine_integration_time_max_margin;
u32 frame_length_lines;
u32 line_length_pck;
u32 read_mode;
u32 div;
if (info == NULL)
return -EINVAL;
memset(data, 0, OV9760_INTG_BUF_COUNT * sizeof(u16));
ret = ov9760_read_reg(client, 1, OV9760_VT_PIX_CLK_DIV, &reg_0x30b0);
if (ret)
return ret;
vt_pix_clk_div = reg_0x30b0 & 0x0f;
ret = ov9760_read_reg(client, 1, OV9760_VT_SYS_CLK_DIV, &reg_0x30b1);
if (ret)
return ret;
vt_sys_clk_div = reg_0x30b1 & 0x1f;
ret = ov9760_read_reg(client, 1, OV9760_PLL_MULTIPLIER_H, &reg_0x30b2);
if (ret)
return ret;
ret = ov9760_read_reg(client, 1, OV9760_PLL_MULTIPLIER_L, &reg_0x30b3);
if (ret)
return ret;
pll_multiplier = ((reg_0x30b2 & 0x01) << 8) | reg_0x30b3;
ret = ov9760_read_reg(client, 1, OV9760_PLL_PLL1_PRE_DIV, &reg_0x30b4);
if (ret)
return ret;
pll_pll1_pre_clk_div = reg_0x30b4 & 0x0f;
ret = ov9760_read_reg(client, 1, OV9760_MIPI_DIV, &reg_0x3010);
if (ret)
return ret;
mipi_div = reg_0x3010 & 0x07;
OV9760_LOG(1,"reg[0x30b0..30b4]: 0x%x 0x%x 0x%x 0x%x 0x%x\n", reg_0x30b0,
reg_0x30b1, reg_0x30b2, reg_0x30b3, reg_0x30b4);
OV9760_LOG(1,"vt_pix_clk_div:0x%x vt_sys_clk_div:0x%x pll_multiplier:0x%x \
pll_pll1_pre_clk_div:0x%x mipi_div:0x%x", vt_pix_clk_div,
vt_sys_clk_div, pll_multiplier, pll_pll1_pre_clk_div,
mipi_div);
div = pll_pll1_pre_clk_div * vt_sys_clk_div * vt_pix_clk_div * mipi_div;
if (div == 0)
return -EINVAL;
vt_pix_clk_freq_mhz = ext_clk_freq_hz*pll_multiplier/div;
memset(data, 0, OV9760_INTG_BUF_COUNT * sizeof(u16));
ret = ov9760_read_reg(client, 4, OV9760_FRAME_LENGTH_LINES, data);
if (ret)
return ret;
frame_length_lines = data[0];
line_length_pck = data[1];
coarse_integration_time_min = 4;
coarse_integration_time_max_margin = 4;
fine_integration_time_min = 4;
fine_integration_time_max_margin = 4;
dev->vt_pix_clk_freq_mhz = vt_pix_clk_freq_mhz;
buf->coarse_integration_time_min = coarse_integration_time_min;
buf->coarse_integration_time_max_margin
= coarse_integration_time_max_margin;
buf->fine_integration_time_min = fine_integration_time_min;
buf->fine_integration_time_max_margin =
fine_integration_time_max_margin;
buf->fine_integration_time_def = fine_integration_time_max_margin;
buf->vt_pix_clk_freq_mhz = vt_pix_clk_freq_mhz;
buf->line_length_pck = line_length_pck;
buf->frame_length_lines = frame_length_lines;
buf->binning_factor_x = ov9760_res[dev->fmt_idx].bin_factor_x ? 2 : 1;
buf->binning_factor_y = ov9760_res[dev->fmt_idx].bin_factor_y ? 2 : 1;
read_mode = ov9760_res[dev->fmt_idx].bin_factor_x ? 0x800 : 0;
buf->read_mode = read_mode;
/* Get the cropping and output resolution to ISP for this mode. */
ret = ov9760_read_reg(client, 2, OV9760_HORIZONTAL_START_H, data);
if (ret)
return ret;
buf->crop_horizontal_start = data[0];
ret = ov9760_read_reg(client, 2, OV9760_VERTICAL_START_H, data);
if (ret)
return ret;
buf->crop_vertical_start = data[0];
ret = ov9760_read_reg(client, 2, OV9760_HORIZONTAL_END_H, data);
if (ret)
return ret;
buf->crop_horizontal_end = data[0];
ret = ov9760_read_reg(client, 2, OV9760_VERTICAL_END_H, data);
if (ret)
return ret;
buf->crop_vertical_end = data[0];
ret = ov9760_read_reg(client, 2, OV9760_HORIZONTAL_OUTPUT_SIZE_H, data);
if (ret)
return ret;
buf->output_width = data[0] - ISP_PADDING_W;
ret = ov9760_read_reg(client, 2, OV9760_VERTICAL_OUTPUT_SIZE_H, data);
if (ret)
return ret;
buf->output_height = data[0] - ISP_PADDING_H;
/* OV9760 is upper-left crop. but this configuration has mirror setting
* So, the crop coordinate for upper-right.
*/
buf->crop_horizontal_start = OV9760_ISP_MAX_WIDTH - buf->output_width;
buf->crop_horizontal_end = OV9760_ISP_MAX_WIDTH - 1;
buf->crop_vertical_start = 0;
buf->crop_vertical_end = buf->output_height - 1;
if(debug & DEBUG_INTG_FACT) {
OV9760_LOG(1,"%s %d vt_pix_clk_freq_mhz:%d line_length_pck:%d frame_length_lines:%d\n", __func__, __LINE__,
buf->vt_pix_clk_freq_mhz, buf->line_length_pck, buf->frame_length_lines);
OV9760_LOG(1,"%s %d coarse_intg_min:%d coarse_intg_max_margin:%d fine_intg_min:%d fine_intg_max_margin:%d\n",
__func__, __LINE__,
buf->coarse_integration_time_min,buf->coarse_integration_time_max_margin,
buf->fine_integration_time_min, buf->fine_integration_time_max_margin);
OV9760_LOG(1,"%s %d crop_x_start:%d crop_y_start:%d crop_x_end:%d crop_y_end:%d \n", __func__, __LINE__,
buf->crop_horizontal_start, buf->crop_vertical_start, buf->crop_horizontal_end, buf->crop_vertical_end);
OV9760_LOG(1,"%s %d output_width:%d output_height:%d\n", __func__, __LINE__, buf->output_width, buf->output_height);
}
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 140
static int distance(struct ov9760_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 ov9760_resolution *tmp_res = NULL;
for (i = 0; i < N_RES; i++) {
tmp_res = &ov9760_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 get_resolution_index(int w, int h)
{
int i;
for (i = 0; i < N_RES; i++) {
if (w != ov9760_res[i].width)
continue;
if (h != ov9760_res[i].height)
continue;
/* Found it */
return i;
}
return -1;
}
static int ov9760_try_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
int idx;
if ((fmt->width > OV9760_RES_WIDTH_MAX)
|| (fmt->height > OV9760_RES_HEIGHT_MAX)) {
fmt->width = OV9760_RES_WIDTH_MAX;
fmt->height = OV9760_RES_HEIGHT_MAX;
} 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;
OV9760_LOG(1,"%s %d idx:%d w:%d h:%d \n", __func__, __LINE__, idx, ov9760_res[idx].width, ov9760_res[idx].height);
}
fmt->width = ov9760_res[idx].width;
fmt->height = ov9760_res[idx].height;
}
fmt->code = V4L2_MBUS_FMT_SBGGR10_1X10;
return 0;
}
static int ov9760_set_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
const struct ov9760_reg *ov9760_def_reg;
struct camera_mipi_info *ov9760_info = NULL;
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
ov9760_info = v4l2_get_subdev_hostdata(sd);
if (ov9760_info == NULL)
return -EINVAL;
ret = ov9760_try_mbus_fmt(sd, fmt);
if (ret) {
v4l2_err(sd, "try fmt fail\n");
return ret;
}
mutex_lock(&dev->input_lock);
dev->fmt_idx = get_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;
}
OV9760_LOG(1,"%s %d name:%s width:%d height:%d\n", __func__, __LINE__, ov9760_res[dev->fmt_idx].desc, ov9760_res[dev->fmt_idx].width, ov9760_res[dev->fmt_idx].height);
ov9760_def_reg = ov9760_res[dev->fmt_idx].regs;
/* enable group hold */
ret = ov9760_write_reg_array(client, ov9760_param_hold);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
ret = ov9760_write_reg_array(client, ov9760_def_reg);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
/* disable group hold */
ret = ov9760_write_reg_array(client, ov9760_param_update);
if (ret) {
mutex_unlock(&dev->input_lock);
return ret;
}
dev->fps = ov9760_res[dev->fmt_idx].fps;
dev->pixels_per_line = ov9760_res[dev->fmt_idx].pixels_per_line;
dev->lines_per_frame = ov9760_res[dev->fmt_idx].lines_per_frame;
dev->coarse_itg = 0;
dev->fine_itg = 0;
dev->gain = 0;
ret = ov9760_get_intg_factor(client, ov9760_info);
mutex_unlock(&dev->input_lock);
if (ret) {
v4l2_err(sd, "failed to get integration_factor\n");
return -EINVAL;
}
return 0;
}
static int ov9760_g_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
if (!fmt)
return -EINVAL;
OV9760_LOG(1,"%s %d idx:%d w:%d h:%d\n", __func__, __LINE__, dev->fmt_idx, ov9760_res[dev->fmt_idx].width, ov9760_res[dev->fmt_idx].height);
fmt->width = ov9760_res[dev->fmt_idx].width;
fmt->height = ov9760_res[dev->fmt_idx].height;
fmt->code = V4L2_MBUS_FMT_SBGGR10_1X10;
return 0;
}
static int ov9760_g_focal(struct v4l2_subdev *sd, s32 *val)
{
*val = (OV9760_FOCAL_LENGTH_NUM << 16) | OV9760_FOCAL_LENGTH_DEM;
return 0;
}
static int ov9760_g_fnumber(struct v4l2_subdev *sd, s32 *val)
{
/*const f number for ov9760*/
*val = (OV9760_F_NUMBER_DEFAULT_NUM << 16) | OV9760_F_NUMBER_DEM;
return 0;
}
static int ov9760_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
{
*val = (OV9760_F_NUMBER_DEFAULT_NUM << 24) |
(OV9760_F_NUMBER_DEM << 16) |
(OV9760_F_NUMBER_DEFAULT_NUM << 8) | OV9760_F_NUMBER_DEM;
return 0;
}
/* Horizontal flip the image. */
static int ov9760_t_hflip(struct v4l2_subdev *sd, int value)
{
return 0;
}
/* Vertically flip the image */
static int ov9760_t_vflip(struct v4l2_subdev *sd, int value)
{
return 0;
}
static int ov9760_test_pattern(struct v4l2_subdev *sd, s32 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return ov9760_write_reg(client, OV9760_8BIT,
OV9760_TEST_PATTERN_MODE, value);
}
static int ov9760_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
*val = ov9760_res[dev->fmt_idx].bin_factor_x;
return 0;
}
static int ov9760_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
*val = ov9760_res[dev->fmt_idx].bin_factor_y;
return 0;
}
static int ov9760_g_priv_int_data(struct v4l2_subdev *sd,
struct v4l2_private_int_data *priv)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov9760_device *dev = to_ov9760_sensor(sd);
u8 __user *to = priv->data;
u32 read_size = priv->size;
int ret;
/* No need to copy data if size is 0 */
if (!read_size)
goto out;
if (IS_ERR(dev->otp_data)) {
dev_err(&client->dev, "OTP data not available");
return PTR_ERR(dev->otp_data);
}
/* Correct read_size value only if bigger than maximum */
if (read_size > DATA_BUF_SIZE)
read_size = DATA_BUF_SIZE;
OV9760_LOG(1,"%s %d read:%d\n", __func__, __LINE__, read_size);
ret = copy_to_user(to, dev->otp_data, read_size);
if (ret) {
dev_err(&client->dev, "%s: failed to copy OTP data to user\n",
__func__);
return -EFAULT;
}
out:
/* Return correct size */
priv->size = DATA_BUF_SIZE;
OV9760_LOG(1,"%s %d qurry size:%d\n", __func__, __LINE__, priv->size);
return 0;
}
static struct ov9760_control ov9760_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 = ov9760_q_exposure,
},
{
.qc = {
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Image v-Flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.tweak = ov9760_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 = ov9760_t_hflip,
},
{
.qc = {
.id = V4L2_CID_TEST_PATTERN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Test pattern",
.minimum = 0,
.maximum = 0xffff,
.step = 1,
.default_value = 0,
},
.tweak = ov9760_test_pattern,
},
{
.qc = {
.id = V4L2_CID_FOCAL_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "focal length",
.minimum = OV9760_FOCAL_LENGTH_DEFAULT,
.maximum = OV9760_FOCAL_LENGTH_DEFAULT,
.step = 0x01,
.default_value = OV9760_FOCAL_LENGTH_DEFAULT,
.flags = 0,
},
.query = ov9760_g_focal,
},
{
.qc = {
.id = V4L2_CID_FNUMBER_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "f-number",
.minimum = OV9760_F_NUMBER_DEFAULT,
.maximum = OV9760_F_NUMBER_DEFAULT,
.step = 0x01,
.default_value = OV9760_F_NUMBER_DEFAULT,
.flags = 0,
},
.query = ov9760_g_fnumber,
},
{
.qc = {
.id = V4L2_CID_FNUMBER_RANGE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "f-number range",
.minimum = OV9760_F_NUMBER_RANGE,
.maximum = OV9760_F_NUMBER_RANGE,
.step = 0x01,
.default_value = OV9760_F_NUMBER_RANGE,
.flags = 0,
},
.query = ov9760_g_fnumber_range,
},
{
.qc = {
.id = V4L2_CID_BIN_FACTOR_HORZ,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "horizontal binning factor",
.minimum = 0,
.maximum = OV9760_BIN_FACTOR_MAX,
.step = 1,
.default_value = 0,
.flags = 0,
},
.query = ov9760_g_bin_factor_x,
},
{
.qc = {
.id = V4L2_CID_BIN_FACTOR_VERT,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "vertical binning factor",
.minimum = 0,
.maximum = OV9760_BIN_FACTOR_MAX,
.step = 1,
.default_value = 0,
.flags = 0,
},
.query = ov9760_g_bin_factor_y,
},
};
#define N_CONTROLS (ARRAY_SIZE(ov9760_controls))
static long __ov9760_set_exposure(struct v4l2_subdev *sd, u16 coarse_itg,
u16 gain)
{
/* shunyong, disable before the format from IQ tool confirmed */
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
struct ov9760_device *dev = to_ov9760_sensor(sd);
/* enable group hold */
ret = ov9760_write_reg_array(client, ov9760_param_hold);
if (ret)
goto out;
/* set coarse integration time */
if (coarse_itg > (dev->lines_per_frame - 4))
ov9760_write_reg(client, OV9760_16BIT,
OV9760_FRAME_LENGTH_LINES, coarse_itg + 4);
else
ov9760_write_reg(client, OV9760_16BIT,
OV9760_FRAME_LENGTH_LINES, dev->lines_per_frame);
/* bits [3..0]-->coarse exp[15..12] */
ret = ov9760_write_reg(client, OV9760_8BIT,
OV9760_COARSE_INTEGRATION_TIME_H, coarse_itg>>12);
if (ret)
goto out_disable;
/* bits [15..4]-->coarse exp[11..0] */
ret = ov9760_write_reg(client, OV9760_16BIT,
OV9760_COARSE_INTEGRATION_TIME_M, (coarse_itg & 0xfff)<<4);
if (ret)
goto out_disable;
/* set global gain */
gain = clamp(gain, (u16)0, (u16)OV9760_MAX_GAIN_VALUE);
ret = ov9760_write_reg(client, OV9760_16BIT,
OV9760_GLOBAL_GAIN, (gain & 0x7ff));
if (ret)
goto out_disable;
dev->gain = gain;
dev->coarse_itg = coarse_itg;
out_disable:
/* disable group hold */
ov9760_write_reg_array(client, ov9760_param_update);
if (debug & DEBUG_GAIN_EXP) {
u16 reg_global_gain, reg_frame_length, reg_coarse_intg_h, reg_coarse_intg_m;
ov9760_read_reg(client, OV9760_16BIT, OV9760_GLOBAL_GAIN, &reg_global_gain);
ov9760_read_reg(client, OV9760_16BIT, OV9760_FRAME_LENGTH_LINES, &reg_frame_length);
ov9760_read_reg(client, OV9760_8BIT, OV9760_COARSE_INTEGRATION_TIME_H, &reg_coarse_intg_h);
ov9760_read_reg(client, OV9760_16BIT, OV9760_COARSE_INTEGRATION_TIME_M, &reg_coarse_intg_m);
OV9760_LOG(1,"%s %d gain:%d coarse_itg:%d\n", __func__, __LINE__, gain, coarse_itg);
OV9760_LOG(1,"%s %d register:0x%x--0x%x 0x%x--0x%x 0x%x--0x%x 0x%x--0x%x\n",
__func__, __LINE__,
OV9760_GLOBAL_GAIN, reg_global_gain,
OV9760_FRAME_LENGTH_LINES, reg_frame_length,
OV9760_COARSE_INTEGRATION_TIME_H, reg_coarse_intg_h,
OV9760_COARSE_INTEGRATION_TIME_M, reg_coarse_intg_m
);
}
out:
return ret;
}
static int ov9760_set_exposure(struct v4l2_subdev *sd, u16 exposure, u16 gain)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
int ret;
mutex_lock(&dev->input_lock);
ret = __ov9760_set_exposure(sd, exposure, gain);
mutex_unlock(&dev->input_lock);
return ret;
}
static long ov9760_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 ov9760_set_exposure(sd, coarse_itg, gain);
}
static long ov9760_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
switch (cmd) {
case ATOMISP_IOC_S_EXPOSURE:
return ov9760_s_exposure(sd, (struct atomisp_exposure *)arg);
case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA:
return ov9760_g_priv_int_data(sd, arg);
default:
return -EINVAL;
}
return 0;
}
static struct ov9760_control *ov9760_find_control(__u32 id)
{
int i;
for (i = 0; i < N_CONTROLS; i++) {
if (ov9760_controls[i].qc.id == id)
return &ov9760_controls[i];
}
return NULL;
}
static int ov9760_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 (ov9760_read_reg(client, OV9760_8BIT, OV9760_PID_HIGH,
&high)) {
v4l2_err(client, "sensor_id_high = 0x%x\n", high);
return -ENODEV;
}
if (ov9760_read_reg(client, OV9760_8BIT, OV9760_PID_LOW,
&low)) {
v4l2_err(client, "sensor_id_low = 0x%x\n", low);
return -ENODEV;
}
*id = (((u8) high) << 8) | (u8) low;
v4l2_err(client, "sensor_id = 0x%x\n", *id);
if (*id != OV9760_MOD_ID) {
v4l2_err(client, "sensor ID error\n");
return -ENODEV;
}
v4l2_err(client, "detect ov9760 success\n");
if (ov9760_read_reg(client, OV9760_8BIT, OV9760_REV,
&rev)) {
v4l2_err(client, "sensor_id_low = 0x%x\n", rev);
return -ENODEV;
}
/* TODO - need to be updated */
*revision = rev;
return 0;
}
static int
ov9760_s_config(struct v4l2_subdev *sd, int irq, void *platform_data)
{
struct ov9760_device *dev = to_ov9760_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;
mutex_lock(&dev->input_lock);
if (dev->platform_data->platform_init) {
ret = dev->platform_data->platform_init(client);
if (ret) {
mutex_unlock(&dev->input_lock);
dev_err(&client->dev, "imx platform init err\n");
return ret;
}
}
ret = __ov9760_s_power(sd, 1);
if (ret) {
mutex_unlock(&dev->input_lock);
v4l2_err(client, "ov9760 power-up err");
return ret;
}
/* config & detect sensor */
ret = ov9760_detect(client, &sensor_id, &sensor_revision);
if (ret) {
v4l2_err(client, "ov9760_detect err s_config.\n");
goto fail_detect;
}
memset(ov9760_data, 0, DATA_BUF_SIZE);
memset(otp_data, 0, DATA_BUF_SIZE);
dev->otp_data = NULL;
/* try to load otp from user-space first */
//ret = request_firmware(&fw, OV9760_OTP_NAME, &client->dev);
//if(ret) {
OV9760_LOG(1,"ov9760 load from user-space failed, load from sensor\n");
ov9760_write_reg_array(client, ov9760_streaming);
ret = ov9760_otp_read(client, ov9760_data, &ov9760_size);
ov9760_write_reg_array(client, ov9760_suspend);
if (!ret)
{
OV9760_LOG(1,"ov9760 otp read done\n");
ret = ov9760_otp_trans(ov9760_data, ov9760_size, otp_data, &otp_size);
if (!ret)
{
OV9760_LOG(1,"ov9760 otp trans done\n");
dev->otp_data = otp_data;
}
}
// } else {
// OV9760_LOG(1,"ov9760 load from user-space success size:0x%x\n", fw->size);
// memcpy(ov9760_data, fw->data, fw->size);
// ov9760_size = fw->size;
// ret = ov9760_otp_trans(ov9760_data, ov9760_size, otp_data, &otp_size);
// if (!ret)
// {
// OV9760_LOG(1,"ov9760 otp trans done\n");
// dev->otp_data = otp_data;
// }
// }
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 = __ov9760_s_power(sd, 0);
mutex_unlock(&dev->input_lock);
if (ret) {
v4l2_err(client, "ov9760 power down err");
return ret;
}
return 0;
fail_csi_cfg:
dev->platform_data->csi_cfg(sd, 0);
fail_detect:
__ov9760_s_power(sd, 0);
if (dev->platform_data->platform_deinit)
dev->platform_data->platform_deinit();
mutex_unlock(&dev->input_lock);
dev_err(&client->dev, "sensor power-gating failed\n");
return ret;
}
static int ov9760_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
struct ov9760_control *ctrl = ov9760_find_control(qc->id);
struct ov9760_device *dev = to_ov9760_sensor(sd);
mutex_lock(&dev->input_lock);
if (ctrl == NULL)
return -EINVAL;
*qc = ctrl->qc;
mutex_unlock(&dev->input_lock);
return 0;
}
static int ov9760_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct ov9760_control *octrl = ov9760_find_control(ctrl->id);
struct ov9760_device *dev = to_ov9760_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 ov9760_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct ov9760_control *octrl = ov9760_find_control(ctrl->id);
struct ov9760_device *dev = to_ov9760_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 ov9760_s_stream(struct v4l2_subdev *sd, int enable)
{
int ret;
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov9760_device *dev = to_ov9760_sensor(sd);
mutex_lock(&dev->input_lock);
if (enable) {
usleep_range(10000, 10100);
ret = ov9760_write_reg_array(client, ov9760_streaming);
dev->streaming = 1;
} else {
ret = ov9760_write_reg_array(client, ov9760_suspend);
if (ret != 0) {
mutex_unlock(&dev->input_lock);
v4l2_err(client, "write_reg_array err\n");
return ret;
}
dev->streaming = 0;
}
mutex_unlock(&dev->input_lock);
return 0;
}
/*
* ov9760 enum frame size, frame intervals
*/
static int ov9760_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 = ov9760_res[index].width;
fsize->discrete.height = ov9760_res[index].height;
fsize->reserved[0] = ov9760_res[index].used;
return 0;
}
static int ov9760_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 = ov9760_res[i].width;
fival->height = ov9760_res[i].height;
fival->discrete.numerator = 1;
fival->discrete.denominator = ov9760_res[i].fps;
return 0;
}
static int ov9760_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_SBGGR10_1X10;
return 0;
}
static int
ov9760_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_OV9760, 0);
}
static int
ov9760_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_SBGGR10_1X10;
return 0;
}
static int
ov9760_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 = ov9760_res[index].width;
fse->min_height = ov9760_res[index].height;
fse->max_width = ov9760_res[index].width;
fse->max_height = ov9760_res[index].height;
return 0;
}
static struct v4l2_mbus_framefmt *
__ov9760_get_pad_format(struct ov9760_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
ov9760_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
struct v4l2_mbus_framefmt *format =
__ov9760_get_pad_format(dev, fh, fmt->pad, fmt->which);
fmt->format = *format;
return 0;
}
static int
ov9760_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
dev->format = fmt->format;
return 0;
}
static int
ov9760_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *param)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
dev->run_mode = param->parm.capture.capturemode;
OV9760_LOG(1,"%s %d mode:%d\n", __func__, __LINE__, dev->run_mode);
mutex_lock(&dev->input_lock);
switch (dev->run_mode) {
case CI_MODE_VIDEO:
OV9760_LOG(1,"%s %d\n", __func__, __LINE__);
ov9760_res = ov9760_res_video;
N_RES = N_RES_VIDEO;
break;
case CI_MODE_STILL_CAPTURE:
OV9760_LOG(1,"%s %d\n", __func__, __LINE__);
ov9760_res = ov9760_res_still;
N_RES = N_RES_STILL;
break;
default:
OV9760_LOG(1,"%s %d\n", __func__, __LINE__);
ov9760_res = ov9760_res_preview;
N_RES = N_RES_PREVIEW;
}
mutex_unlock(&dev->input_lock);
return 0;
}
int
ov9760_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *interval)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(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) {
if (dev->coarse_itg == 0xFFFF) {
/*
* we can not add 1 according to ds, as this will
* cause over flow
*/
v4l2_warn(client, "%s: abnormal coarse_itg:0x%x\n",
__func__, dev->coarse_itg);
lines_per_frame = dev->coarse_itg;
} else {
lines_per_frame = dev->coarse_itg + 1;
}
} 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 ov9760_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
{
struct ov9760_device *dev = to_ov9760_sensor(sd);
mutex_lock(&dev->input_lock);
*frames = ov9760_res[dev->fmt_idx].skip_frames;
mutex_unlock(&dev->input_lock);
return 0;
}
static const struct v4l2_subdev_sensor_ops ov9760_sensor_ops = {
.g_skip_frames = ov9760_g_skip_frames,
};
static const struct v4l2_subdev_video_ops ov9760_video_ops = {
.try_mbus_fmt = ov9760_try_mbus_fmt,
.s_mbus_fmt = ov9760_set_mbus_fmt,
.s_stream = ov9760_s_stream,
.enum_framesizes = ov9760_enum_framesizes,
.enum_frameintervals = ov9760_enum_frameintervals,
.s_parm = ov9760_s_parm,
.g_mbus_fmt = ov9760_g_mbus_fmt,
.enum_mbus_fmt = ov9760_enum_mbus_fmt,
.g_frame_interval = ov9760_g_frame_interval,
};
static const struct v4l2_subdev_core_ops ov9760_core_ops = {
.g_chip_ident = ov9760_g_chip_ident,
.queryctrl = ov9760_queryctrl,
.g_ctrl = ov9760_g_ctrl,
.s_ctrl = ov9760_s_ctrl,
.ioctl = ov9760_ioctl,
.s_power = ov9760_s_power,
.init = ov9760_init,
};
static const struct v4l2_subdev_pad_ops ov9760_pad_ops = {
.enum_mbus_code = ov9760_enum_mbus_code,
.enum_frame_size = ov9760_enum_frame_size,
.get_fmt = ov9760_get_pad_format,
.set_fmt = ov9760_set_pad_format,
};
static const struct v4l2_subdev_ops ov9760_ops = {
.core = &ov9760_core_ops,
.video = &ov9760_video_ops,
.pad = &ov9760_pad_ops,
.sensor = &ov9760_sensor_ops,
};
static const struct media_entity_operations ov9760_entity_ops = {
.link_setup = NULL,
};
static int ov9760_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov9760_device *dev = to_ov9760_sensor(sd);
dev->platform_data->csi_cfg(sd, 0);
if (dev->platform_data->platform_deinit)
dev->platform_data->platform_deinit();
v4l2_device_unregister_subdev(sd);
kfree(dev);
return 0;
}
static int ov9760_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct ov9760_device *dev;
int ret;
gclient = client;
/* allocate sensor device & init sub device */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) {
v4l2_err(client, "%s: out of memory\n", __func__);
return -ENOMEM;
}
mutex_init(&dev->input_lock);
dev->fmt_idx = 0;
v4l2_i2c_subdev_init(&(dev->sd), client, &ov9760_ops);
if (client->dev.platform_data) {
ret = ov9760_s_config(&dev->sd, client->irq,
client->dev.platform_data);
if (ret)
goto out_free;
}
dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
dev->pad.flags = MEDIA_PAD_FL_SOURCE;
dev->format.code = V4L2_MBUS_FMT_SBGGR10_1X10;
dev->sd.entity.ops = &ov9760_entity_ops;
dev->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&dev->sd.entity, 1, &dev->pad, 0);
if (ret)
ov9760_remove(client);
return ret;
out_free:
v4l2_device_unregister_subdev(&dev->sd);
kfree(dev);
return ret;
}
static const struct i2c_device_id ov9760_id[] = {
{OV9760_NAME, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, ov9760_id);
static struct i2c_driver ov9760_driver = {
.driver = {
.owner = THIS_MODULE,
.name = OV9760_NAME,
},
.probe = ov9760_probe,
.remove = ov9760_remove,
.id_table = ov9760_id,
};
static __init int init_ov9760(void)
{
OV9760_LOG(1,"%s %d\n", __func__, __LINE__);
return i2c_add_driver(&ov9760_driver);
}
static __exit void exit_ov9760(void)
{
OV9760_LOG(1,"%s %d\n", __func__, __LINE__);
i2c_del_driver(&ov9760_driver);
}
module_init(init_ov9760);
module_exit(exit_ov9760);
MODULE_DESCRIPTION("A low-level driver for OV9760 sensor");
MODULE_AUTHOR("Yang shunyong <shunyong.yang@intel.com>");
MODULE_LICENSE("GPL");
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