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linux / linux / kernel / git / gregkh / driver-core / d74b15dbbbd2741f3580d7c884cd285144ae0cab / . / drivers / staging / media / atomisp / i2c / ov5693 / atomisp-ov5693.c
blob: 2be0ef14d53e1445eb9d37a3b6dbf12e2f781157 [file] [log] [blame]
/*
* Support for OmniVision OV5693 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 <linux/io.h>
#include <linux/acpi.h>
#include "../../include/linux/atomisp_gmin_platform.h"
#include "ov5693.h"
#include "ad5823.h"
#define __cci_delay(t) \
do { \
if ((t) < 10) { \
usleep_range((t) * 1000, ((t) + 1) * 1000); \
} else { \
msleep((t)); \
} \
} while (0)
/* Value 30ms reached through experimentation on byt ecs.
* The DS specifies a much lower value but when using a smaller value
* the I2C bus sometimes locks up permanently when starting the camera.
* This issue could not be reproduced on cht, so we can reduce the
* delay value to a lower value when insmod.
*/
static uint up_delay = 30;
module_param(up_delay, uint, 0644);
MODULE_PARM_DESC(up_delay,
"Delay prior to the first CCI transaction for ov5693");
static int vcm_ad_i2c_wr8(struct i2c_client *client, u8 reg, u8 val)
{
int err;
struct i2c_msg msg;
u8 buf[2];
buf[0] = reg;
buf[1] = val;
msg.addr = VCM_ADDR;
msg.flags = 0;
msg.len = 2;
msg.buf = &buf[0];
err = i2c_transfer(client->adapter, &msg, 1);
if (err != 1) {
dev_err(&client->dev, "%s: vcm i2c fail, err code = %d\n",
__func__, err);
return -EIO;
}
return 0;
}
static int ad5823_i2c_write(struct i2c_client *client, u8 reg, u8 val)
{
struct i2c_msg msg;
u8 buf[2];
buf[0] = reg;
buf[1] = val;
msg.addr = AD5823_VCM_ADDR;
msg.flags = 0;
msg.len = 0x02;
msg.buf = &buf[0];
if (i2c_transfer(client->adapter, &msg, 1) != 1)
return -EIO;
return 0;
}
static int ad5823_i2c_read(struct i2c_client *client, u8 reg, u8 *val)
{
struct i2c_msg msg[2];
u8 buf[2];
buf[0] = reg;
buf[1] = 0;
msg[0].addr = AD5823_VCM_ADDR;
msg[0].flags = 0;
msg[0].len = 0x01;
msg[0].buf = &buf[0];
msg[1].addr = 0x0c;
msg[1].flags = I2C_M_RD;
msg[1].len = 0x01;
msg[1].buf = &buf[1];
*val = 0;
if (i2c_transfer(client->adapter, msg, 2) != 2)
return -EIO;
*val = buf[1];
return 0;
}
static const u32 ov5693_embedded_effective_size = 28;
/* i2c read/write stuff */
static int ov5693_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 != OV5693_8BIT && data_length != OV5693_16BIT
&& data_length != OV5693_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 == OV5693_8BIT)
*val = (u8)data[0];
else if (data_length == OV5693_16BIT)
*val = be16_to_cpu(*(__be16 *)&data[0]);
else
*val = be32_to_cpu(*(__be32 *)&data[0]);
return 0;
}
static int ov5693_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 vcm_dw_i2c_write(struct i2c_client *client, u16 data)
{
struct i2c_msg msg;
const int num_msg = 1;
int ret;
__be16 val;
val = cpu_to_be16(data);
msg.addr = VCM_ADDR;
msg.flags = 0;
msg.len = OV5693_16BIT;
msg.buf = (void *)&val;
ret = i2c_transfer(client->adapter, &msg, 1);
return ret == num_msg ? 0 : -EIO;
}
/*
* Theory: per datasheet, the two VCMs both allow for a 2-byte read.
* The DW9714 doesn't actually specify what this does (it has a
* two-byte write-only protocol, but specifies the read sequence as
* legal), but it returns the same data (zeroes) always, after an
* undocumented initial NAK. The AD5823 has a one-byte address
* register to which all writes go, and subsequent reads will cycle
* through the 8 bytes of registers. Notably, the default values (the
* device is always power-cycled affirmatively, so we can rely on
* these) in AD5823 are not pairwise repetitions of the same 16 bit
* word. So all we have to do is sequentially read two bytes at a
* time and see if we detect a difference in any of the first four
* pairs.
*/
static int vcm_detect(struct i2c_client *client)
{
int i, ret;
struct i2c_msg msg;
u16 data0 = 0, data;
for (i = 0; i < 4; i++) {
msg.addr = VCM_ADDR;
msg.flags = I2C_M_RD;
msg.len = sizeof(data);
msg.buf = (u8 *)&data;
ret = i2c_transfer(client->adapter, &msg, 1);
/*
* DW9714 always fails the first read and returns
* zeroes for subsequent ones
*/
if (i == 0 && ret == -EREMOTEIO) {
data0 = 0;
continue;
}
if (i == 0)
data0 = data;
if (data != data0)
return VCM_AD5823;
}
return ret == 1 ? VCM_DW9714 : ret;
}
static int ov5693_write_reg(struct i2c_client *client, u16 data_length,
u16 reg, u16 val)
{
int ret;
unsigned char data[4] = {0};
__be16 *wreg = (void *)data;
const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
if (data_length != OV5693_8BIT && data_length != OV5693_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 == OV5693_8BIT) {
data[2] = (u8)(val);
} else {
/* OV5693_16BIT */
__be16 *wdata = (void *)&data[2];
*wdata = cpu_to_be16(val);
}
ret = ov5693_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;
}
/*
* ov5693_write_reg_array - Initializes a list of OV5693 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().
*
* __ov5693_flush_reg_array, __ov5693_buf_reg_array() and
* __ov5693_write_reg_is_consecutive() are internal functions to
* ov5693_write_reg_array_fast() and should be not used anywhere else.
*
*/
static int __ov5693_flush_reg_array(struct i2c_client *client,
struct ov5693_write_ctrl *ctrl)
{
u16 size;
__be16 *reg = (void *)&ctrl->buffer.addr;
if (ctrl->index == 0)
return 0;
size = sizeof(u16) + ctrl->index; /* 16-bit address + data */
*reg = cpu_to_be16(ctrl->buffer.addr);
ctrl->index = 0;
return ov5693_i2c_write(client, size, (u8 *)reg);
}
static int __ov5693_buf_reg_array(struct i2c_client *client,
struct ov5693_write_ctrl *ctrl,
const struct ov5693_reg *next)
{
int size;
__be16 *data16;
switch (next->type) {
case OV5693_8BIT:
size = 1;
ctrl->buffer.data[ctrl->index] = (u8)next->val;
break;
case OV5693_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) >= OV5693_MAX_WRITE_BUF_SIZE)
return __ov5693_flush_reg_array(client, ctrl);
return 0;
}
static int __ov5693_write_reg_is_consecutive(struct i2c_client *client,
struct ov5693_write_ctrl *ctrl,
const struct ov5693_reg *next)
{
if (ctrl->index == 0)
return 1;
return ctrl->buffer.addr + ctrl->index == next->reg;
}
static int ov5693_write_reg_array(struct i2c_client *client,
const struct ov5693_reg *reglist)
{
const struct ov5693_reg *next = reglist;
struct ov5693_write_ctrl ctrl;
int err;
ctrl.index = 0;
for (; next->type != OV5693_TOK_TERM; next++) {
switch (next->type & OV5693_TOK_MASK) {
case OV5693_TOK_DELAY:
err = __ov5693_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 (!__ov5693_write_reg_is_consecutive(client, &ctrl,
next)) {
err = __ov5693_flush_reg_array(client, &ctrl);
if (err)
return err;
}
err = __ov5693_buf_reg_array(client, &ctrl, next);
if (err) {
dev_err(&client->dev,
"%s: write error, aborted\n",
__func__);
return err;
}
break;
}
}
return __ov5693_flush_reg_array(client, &ctrl);
}
static int ov5693_g_focal(struct v4l2_subdev *sd, s32 *val)
{
*val = (OV5693_FOCAL_LENGTH_NUM << 16) | OV5693_FOCAL_LENGTH_DEM;
return 0;
}
static int ov5693_g_fnumber(struct v4l2_subdev *sd, s32 *val)
{
/*const f number for imx*/
*val = (OV5693_F_NUMBER_DEFAULT_NUM << 16) | OV5693_F_NUMBER_DEM;
return 0;
}
static int ov5693_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
{
*val = (OV5693_F_NUMBER_DEFAULT_NUM << 24) |
(OV5693_F_NUMBER_DEM << 16) |
(OV5693_F_NUMBER_DEFAULT_NUM << 8) | OV5693_F_NUMBER_DEM;
return 0;
}
static int ov5693_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
*val = ov5693_res[dev->fmt_idx].bin_factor_x;
return 0;
}
static int ov5693_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
*val = ov5693_res[dev->fmt_idx].bin_factor_y;
return 0;
}
static int ov5693_get_intg_factor(struct i2c_client *client,
struct camera_mipi_info *info,
const struct ov5693_resolution *res)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov5693_device *dev = to_ov5693_sensor(sd);
struct atomisp_sensor_mode_data *buf = &info->data;
unsigned int pix_clk_freq_hz;
u16 reg_val;
int ret;
if (!info)
return -EINVAL;
/* pixel clock */
pix_clk_freq_hz = res->pix_clk_freq * 1000000;
dev->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
buf->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
/* get integration time */
buf->coarse_integration_time_min = OV5693_COARSE_INTG_TIME_MIN;
buf->coarse_integration_time_max_margin =
OV5693_COARSE_INTG_TIME_MAX_MARGIN;
buf->fine_integration_time_min = OV5693_FINE_INTG_TIME_MIN;
buf->fine_integration_time_max_margin =
OV5693_FINE_INTG_TIME_MAX_MARGIN;
buf->fine_integration_time_def = OV5693_FINE_INTG_TIME_MIN;
buf->frame_length_lines = res->lines_per_frame;
buf->line_length_pck = res->pixels_per_line;
buf->read_mode = res->bin_mode;
/* get the cropping and output resolution to ISP for this mode. */
ret = ov5693_read_reg(client, OV5693_16BIT,
OV5693_HORIZONTAL_START_H, &reg_val);
if (ret)
return ret;
buf->crop_horizontal_start = reg_val;
ret = ov5693_read_reg(client, OV5693_16BIT,
OV5693_VERTICAL_START_H, &reg_val);
if (ret)
return ret;
buf->crop_vertical_start = reg_val;
ret = ov5693_read_reg(client, OV5693_16BIT,
OV5693_HORIZONTAL_END_H, &reg_val);
if (ret)
return ret;
buf->crop_horizontal_end = reg_val;
ret = ov5693_read_reg(client, OV5693_16BIT,
OV5693_VERTICAL_END_H, &reg_val);
if (ret)
return ret;
buf->crop_vertical_end = reg_val;
ret = ov5693_read_reg(client, OV5693_16BIT,
OV5693_HORIZONTAL_OUTPUT_SIZE_H, &reg_val);
if (ret)
return ret;
buf->output_width = reg_val;
ret = ov5693_read_reg(client, OV5693_16BIT,
OV5693_VERTICAL_OUTPUT_SIZE_H, &reg_val);
if (ret)
return ret;
buf->output_height = reg_val;
buf->binning_factor_x = res->bin_factor_x ?
res->bin_factor_x : 1;
buf->binning_factor_y = res->bin_factor_y ?
res->bin_factor_y : 1;
return 0;
}
static long __ov5693_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
int gain, int digitgain)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5693_device *dev = to_ov5693_sensor(sd);
u16 vts, hts;
int ret, exp_val;
hts = ov5693_res[dev->fmt_idx].pixels_per_line;
vts = ov5693_res[dev->fmt_idx].lines_per_frame;
/*
* If coarse_itg is larger than 1<<15, can not write to reg directly.
* The way is to write coarse_itg/2 to the reg, meanwhile write 2*hts
* to the reg.
*/
if (coarse_itg > (1 << 15)) {
hts = hts * 2;
coarse_itg = (int)coarse_itg / 2;
}
/* group hold */
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_GROUP_ACCESS, 0x00);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_GROUP_ACCESS);
return ret;
}
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_TIMING_HTS_H, (hts >> 8) & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_TIMING_HTS_H);
return ret;
}
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_TIMING_HTS_L, hts & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_TIMING_HTS_L);
return ret;
}
/* Increase the VTS to match exposure + MARGIN */
if (coarse_itg > vts - OV5693_INTEGRATION_TIME_MARGIN)
vts = (u16)coarse_itg + OV5693_INTEGRATION_TIME_MARGIN;
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_TIMING_VTS_H, (vts >> 8) & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_TIMING_VTS_H);
return ret;
}
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_TIMING_VTS_L, vts & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_TIMING_VTS_L);
return ret;
}
/* set exposure */
/* Lower four bit should be 0*/
exp_val = coarse_itg << 4;
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_EXPOSURE_L, exp_val & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_EXPOSURE_L);
return ret;
}
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_EXPOSURE_M, (exp_val >> 8) & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_EXPOSURE_M);
return ret;
}
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_EXPOSURE_H, (exp_val >> 16) & 0x0F);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_EXPOSURE_H);
return ret;
}
/* Analog gain */
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_AGC_L, gain & 0xff);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_AGC_L);
return ret;
}
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_AGC_H, (gain >> 8) & 0xff);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_AGC_H);
return ret;
}
/* Digital gain */
if (digitgain) {
ret = ov5693_write_reg(client, OV5693_16BIT,
OV5693_MWB_RED_GAIN_H, digitgain);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_MWB_RED_GAIN_H);
return ret;
}
ret = ov5693_write_reg(client, OV5693_16BIT,
OV5693_MWB_GREEN_GAIN_H, digitgain);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_MWB_RED_GAIN_H);
return ret;
}
ret = ov5693_write_reg(client, OV5693_16BIT,
OV5693_MWB_BLUE_GAIN_H, digitgain);
if (ret) {
dev_err(&client->dev, "%s: write %x error, aborted\n",
__func__, OV5693_MWB_RED_GAIN_H);
return ret;
}
}
/* End group */
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_GROUP_ACCESS, 0x10);
if (ret)
return ret;
/* Delay launch group */
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_GROUP_ACCESS, 0xa0);
if (ret)
return ret;
return ret;
}
static int ov5693_set_exposure(struct v4l2_subdev *sd, int exposure,
int gain, int digitgain)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
int ret;
mutex_lock(&dev->input_lock);
ret = __ov5693_set_exposure(sd, exposure, gain, digitgain);
mutex_unlock(&dev->input_lock);
return ret;
}
static long ov5693_s_exposure(struct v4l2_subdev *sd,
struct atomisp_exposure *exposure)
{
u16 coarse_itg = exposure->integration_time[0];
u16 analog_gain = exposure->gain[0];
u16 digital_gain = exposure->gain[1];
/* we should not accept the invalid value below */
if (analog_gain == 0) {
struct i2c_client *client = v4l2_get_subdevdata(sd);
v4l2_err(client, "%s: invalid value\n", __func__);
return -EINVAL;
}
return ov5693_set_exposure(sd, coarse_itg, analog_gain, digital_gain);
}
static int ov5693_read_otp_reg_array(struct i2c_client *client, u16 size,
u16 addr, u8 *buf)
{
u16 index;
int ret;
u16 *pVal = NULL;
for (index = 0; index <= size; index++) {
pVal = (u16 *)(buf + index);
ret =
ov5693_read_reg(client, OV5693_8BIT, addr + index,
pVal);
if (ret)
return ret;
}
return 0;
}
static int __ov5693_otp_read(struct v4l2_subdev *sd, u8 *buf)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5693_device *dev = to_ov5693_sensor(sd);
int ret;
int i;
u8 *b = buf;
dev->otp_size = 0;
for (i = 1; i < OV5693_OTP_BANK_MAX; i++) {
/*set bank NO and OTP read mode. */
ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_OTP_BANK_REG,
(i | 0xc0)); //[7:6] 2'b11 [5:0] bank no
if (ret) {
dev_err(&client->dev, "failed to prepare OTP page\n");
return ret;
}
//pr_debug("write 0x%x->0x%x\n",OV5693_OTP_BANK_REG,(i|0xc0));
/*enable read */
ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_OTP_READ_REG,
OV5693_OTP_MODE_READ); // enable :1
if (ret) {
dev_err(&client->dev,
"failed to set OTP reading mode page");
return ret;
}
//pr_debug("write 0x%x->0x%x\n",OV5693_OTP_READ_REG,OV5693_OTP_MODE_READ);
/* Reading the OTP data array */
ret = ov5693_read_otp_reg_array(client, OV5693_OTP_BANK_SIZE,
OV5693_OTP_START_ADDR,
b);
if (ret) {
dev_err(&client->dev, "failed to read OTP data\n");
return ret;
}
//pr_debug("BANK[%2d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i, *b, *(b+1), *(b+2), *(b+3), *(b+4), *(b+5), *(b+6), *(b+7), *(b+8), *(b+9), *(b+10), *(b+11), *(b+12), *(b+13), *(b+14), *(b+15));
//Intel OTP map, try to read 320byts first.
if (i == 21) {
if ((*b) == 0) {
dev->otp_size = 320;
break;
} else {
b = buf;
continue;
}
} else if (i ==
24) { //if the first 320bytes data doesn't not exist, try to read the next 32bytes data.
if ((*b) == 0) {
dev->otp_size = 32;
break;
} else {
b = buf;
continue;
}
} else if (i ==
27) { //if the prvious 32bytes data doesn't exist, try to read the next 32bytes data again.
if ((*b) == 0) {
dev->otp_size = 32;
break;
} else {
dev->otp_size = 0; // no OTP data.
break;
}
}
b = b + OV5693_OTP_BANK_SIZE;
}
return 0;
}
/*
* Read otp data and store it into a kmalloced buffer.
* The caller must kfree the buffer when no more needed.
* @size: set to the size of the returned otp data.
*/
static void *ov5693_otp_read(struct v4l2_subdev *sd)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 *buf;
int ret;
buf = devm_kzalloc(&client->dev, (OV5693_OTP_DATA_SIZE + 16), GFP_KERNEL);
if (!buf)
return ERR_PTR(-ENOMEM);
//otp valid after mipi on and sw stream on
ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_FRAME_OFF_NUM, 0x00);
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_SW_STREAM, OV5693_START_STREAMING);
ret = __ov5693_otp_read(sd, buf);
//mipi off and sw stream off after otp read
ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_FRAME_OFF_NUM, 0x0f);
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_SW_STREAM, OV5693_STOP_STREAMING);
/* Driver has failed to find valid data */
if (ret) {
dev_err(&client->dev, "sensor found no valid OTP data\n");
return ERR_PTR(ret);
}
return buf;
}
static int ov5693_g_priv_int_data(struct v4l2_subdev *sd,
struct v4l2_private_int_data *priv)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5693_device *dev = to_ov5693_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 > OV5693_OTP_DATA_SIZE)
read_size = OV5693_OTP_DATA_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;
}
pr_debug("%s read_size:%d\n", __func__, read_size);
out:
/* Return correct size */
priv->size = dev->otp_size;
return 0;
}
static long ov5693_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
switch (cmd) {
case ATOMISP_IOC_S_EXPOSURE:
return ov5693_s_exposure(sd, arg);
case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA:
return ov5693_g_priv_int_data(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 ov5693_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 = ov5693_read_reg(client, OV5693_8BIT,
OV5693_EXPOSURE_L,
&reg_v);
if (ret)
goto err;
ret = ov5693_read_reg(client, OV5693_8BIT,
OV5693_EXPOSURE_M,
&reg_v2);
if (ret)
goto err;
reg_v += reg_v2 << 8;
ret = ov5693_read_reg(client, OV5693_8BIT,
OV5693_EXPOSURE_H,
&reg_v2);
if (ret)
goto err;
*value = reg_v + (((u32)reg_v2 << 16));
err:
return ret;
}
static int ad5823_t_focus_vcm(struct v4l2_subdev *sd, u16 val)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = -EINVAL;
u8 vcm_code;
ret = ad5823_i2c_read(client, AD5823_REG_VCM_CODE_MSB, &vcm_code);
if (ret)
return ret;
/* set reg VCM_CODE_MSB Bit[1:0] */
vcm_code = (vcm_code & VCM_CODE_MSB_MASK) |
((val >> 8) & ~VCM_CODE_MSB_MASK);
ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_MSB, vcm_code);
if (ret)
return ret;
/* set reg VCM_CODE_LSB Bit[7:0] */
ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_LSB, (val & 0xff));
if (ret)
return ret;
/* set required vcm move time */
vcm_code = AD5823_RESONANCE_PERIOD / AD5823_RESONANCE_COEF
- AD5823_HIGH_FREQ_RANGE;
ret = ad5823_i2c_write(client, AD5823_REG_VCM_MOVE_TIME, vcm_code);
return ret;
}
static int ad5823_t_focus_abs(struct v4l2_subdev *sd, s32 value)
{
value = min(value, AD5823_MAX_FOCUS_POS);
return ad5823_t_focus_vcm(sd, value);
}
static int ov5693_t_focus_abs(struct v4l2_subdev *sd, s32 value)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
dev_dbg(&client->dev, "%s: FOCUS_POS: 0x%x\n", __func__, value);
value = clamp(value, 0, OV5693_VCM_MAX_FOCUS_POS);
if (dev->vcm == VCM_DW9714) {
if (dev->vcm_update) {
ret = vcm_dw_i2c_write(client, VCM_PROTECTION_OFF);
if (ret)
return ret;
ret = vcm_dw_i2c_write(client, DIRECT_VCM);
if (ret)
return ret;
ret = vcm_dw_i2c_write(client, VCM_PROTECTION_ON);
if (ret)
return ret;
dev->vcm_update = false;
}
ret = vcm_dw_i2c_write(client,
vcm_val(value, VCM_DEFAULT_S));
} else if (dev->vcm == VCM_AD5823) {
ad5823_t_focus_abs(sd, value);
}
if (ret == 0) {
dev->number_of_steps = value - dev->focus;
dev->focus = value;
dev->timestamp_t_focus_abs = ktime_get();
} else
dev_err(&client->dev,
"%s: i2c failed. ret %d\n", __func__, ret);
return ret;
}
static int ov5693_t_focus_rel(struct v4l2_subdev *sd, s32 value)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
return ov5693_t_focus_abs(sd, dev->focus + value);
}
#define DELAY_PER_STEP_NS 1000000
#define DELAY_MAX_PER_STEP_NS (1000000 * 1023)
static int ov5693_q_focus_status(struct v4l2_subdev *sd, s32 *value)
{
u32 status = 0;
struct ov5693_device *dev = to_ov5693_sensor(sd);
ktime_t temptime;
ktime_t timedelay = ns_to_ktime(min_t(u32,
abs(dev->number_of_steps) * DELAY_PER_STEP_NS,
DELAY_MAX_PER_STEP_NS));
temptime = ktime_sub(ktime_get(), (dev->timestamp_t_focus_abs));
if (ktime_compare(temptime, timedelay) <= 0) {
status |= ATOMISP_FOCUS_STATUS_MOVING;
status |= ATOMISP_FOCUS_HP_IN_PROGRESS;
} else {
status |= ATOMISP_FOCUS_STATUS_ACCEPTS_NEW_MOVE;
status |= ATOMISP_FOCUS_HP_COMPLETE;
}
*value = status;
return 0;
}
static int ov5693_q_focus_abs(struct v4l2_subdev *sd, s32 *value)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
s32 val;
ov5693_q_focus_status(sd, &val);
if (val & ATOMISP_FOCUS_STATUS_MOVING)
*value = dev->focus - dev->number_of_steps;
else
*value = dev->focus;
return 0;
}
static int ov5693_t_vcm_slew(struct v4l2_subdev *sd, s32 value)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
dev->number_of_steps = value;
dev->vcm_update = true;
return 0;
}
static int ov5693_t_vcm_timing(struct v4l2_subdev *sd, s32 value)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
dev->number_of_steps = value;
dev->vcm_update = true;
return 0;
}
static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov5693_device *dev =
container_of(ctrl->handler, struct ov5693_device, ctrl_handler);
struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_FOCUS_ABSOLUTE:
dev_dbg(&client->dev, "%s: CID_FOCUS_ABSOLUTE:%d.\n",
__func__, ctrl->val);
ret = ov5693_t_focus_abs(&dev->sd, ctrl->val);
break;
case V4L2_CID_FOCUS_RELATIVE:
dev_dbg(&client->dev, "%s: CID_FOCUS_RELATIVE:%d.\n",
__func__, ctrl->val);
ret = ov5693_t_focus_rel(&dev->sd, ctrl->val);
break;
case V4L2_CID_VCM_SLEW:
ret = ov5693_t_vcm_slew(&dev->sd, ctrl->val);
break;
case V4L2_CID_VCM_TIMEING:
ret = ov5693_t_vcm_timing(&dev->sd, ctrl->val);
break;
default:
ret = -EINVAL;
}
return ret;
}
static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov5693_device *dev =
container_of(ctrl->handler, struct ov5693_device, ctrl_handler);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE_ABSOLUTE:
ret = ov5693_q_exposure(&dev->sd, &ctrl->val);
break;
case V4L2_CID_FOCAL_ABSOLUTE:
ret = ov5693_g_focal(&dev->sd, &ctrl->val);
break;
case V4L2_CID_FNUMBER_ABSOLUTE:
ret = ov5693_g_fnumber(&dev->sd, &ctrl->val);
break;
case V4L2_CID_FNUMBER_RANGE:
ret = ov5693_g_fnumber_range(&dev->sd, &ctrl->val);
break;
case V4L2_CID_FOCUS_ABSOLUTE:
ret = ov5693_q_focus_abs(&dev->sd, &ctrl->val);
break;
case V4L2_CID_FOCUS_STATUS:
ret = ov5693_q_focus_status(&dev->sd, &ctrl->val);
break;
case V4L2_CID_BIN_FACTOR_HORZ:
ret = ov5693_g_bin_factor_x(&dev->sd, &ctrl->val);
break;
case V4L2_CID_BIN_FACTOR_VERT:
ret = ov5693_g_bin_factor_y(&dev->sd, &ctrl->val);
break;
default:
ret = -EINVAL;
}
return ret;
}
static const struct v4l2_ctrl_ops ctrl_ops = {
.s_ctrl = ov5693_s_ctrl,
.g_volatile_ctrl = ov5693_g_volatile_ctrl
};
static const struct v4l2_ctrl_config ov5693_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_FOCAL_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "focal length",
.min = OV5693_FOCAL_LENGTH_DEFAULT,
.max = OV5693_FOCAL_LENGTH_DEFAULT,
.step = 0x01,
.def = OV5693_FOCAL_LENGTH_DEFAULT,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_FNUMBER_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "f-number",
.min = OV5693_F_NUMBER_DEFAULT,
.max = OV5693_F_NUMBER_DEFAULT,
.step = 0x01,
.def = OV5693_F_NUMBER_DEFAULT,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_FNUMBER_RANGE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "f-number range",
.min = OV5693_F_NUMBER_RANGE,
.max = OV5693_F_NUMBER_RANGE,
.step = 0x01,
.def = OV5693_F_NUMBER_RANGE,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_FOCUS_ABSOLUTE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "focus move absolute",
.min = 0,
.max = OV5693_VCM_MAX_FOCUS_POS,
.step = 1,
.def = 0,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_FOCUS_RELATIVE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "focus move relative",
.min = OV5693_VCM_MAX_FOCUS_NEG,
.max = OV5693_VCM_MAX_FOCUS_POS,
.step = 1,
.def = 0,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_FOCUS_STATUS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "focus status",
.min = 0,
.max = 100, /* allow enum to grow in the future */
.step = 1,
.def = 0,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_VCM_SLEW,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "vcm slew",
.min = 0,
.max = OV5693_VCM_SLEW_STEP_MAX,
.step = 1,
.def = 0,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_VCM_TIMEING,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "vcm step time",
.min = 0,
.max = OV5693_VCM_SLEW_TIME_MAX,
.step = 1,
.def = 0,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_BIN_FACTOR_HORZ,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "horizontal binning factor",
.min = 0,
.max = OV5693_BIN_FACTOR_MAX,
.step = 1,
.def = 0,
.flags = 0,
},
{
.ops = &ctrl_ops,
.id = V4L2_CID_BIN_FACTOR_VERT,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "vertical binning factor",
.min = 0,
.max = OV5693_BIN_FACTOR_MAX,
.step = 1,
.def = 0,
.flags = 0,
},
};
static int ov5693_init(struct v4l2_subdev *sd)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
pr_info("%s\n", __func__);
mutex_lock(&dev->input_lock);
dev->vcm_update = false;
if (dev->vcm == VCM_AD5823) {
ret = vcm_ad_i2c_wr8(client, 0x01, 0x01); /* vcm init test */
if (ret)
dev_err(&client->dev,
"vcm reset failed\n");
/*change the mode*/
ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_MSB,
AD5823_RING_CTRL_ENABLE);
if (ret)
dev_err(&client->dev,
"vcm enable ringing failed\n");
ret = ad5823_i2c_write(client, AD5823_REG_MODE,
AD5823_ARC_RES1);
if (ret)
dev_err(&client->dev,
"vcm change mode failed\n");
}
/*change initial focus value for ad5823*/
if (dev->vcm == VCM_AD5823) {
dev->focus = AD5823_INIT_FOCUS_POS;
ov5693_t_focus_abs(sd, AD5823_INIT_FOCUS_POS);
} else {
dev->focus = 0;
ov5693_t_focus_abs(sd, 0);
}
mutex_unlock(&dev->input_lock);
return 0;
}
static int power_ctrl(struct v4l2_subdev *sd, bool flag)
{
int ret;
struct ov5693_device *dev = to_ov5693_sensor(sd);
if (!dev || !dev->platform_data)
return -ENODEV;
/*
* This driver assumes "internal DVDD, PWDNB tied to DOVDD".
* In this set up only gpio0 (XSHUTDN) should be available
* but in some products (for example ECS) gpio1 (PWDNB) is
* also available. If gpio1 is available we emulate it being
* tied to DOVDD here.
*/
if (flag) {
ret = dev->platform_data->v2p8_ctrl(sd, 1);
dev->platform_data->gpio1_ctrl(sd, 1);
if (ret == 0) {
ret = dev->platform_data->v1p8_ctrl(sd, 1);
if (ret) {
dev->platform_data->gpio1_ctrl(sd, 0);
ret = dev->platform_data->v2p8_ctrl(sd, 0);
}
}
} else {
dev->platform_data->gpio1_ctrl(sd, 0);
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 ov5693_device *dev = to_ov5693_sensor(sd);
if (!dev || !dev->platform_data)
return -ENODEV;
return dev->platform_data->gpio0_ctrl(sd, flag);
}
static int __power_up(struct v4l2_subdev *sd)
{
struct ov5693_device *dev = to_ov5693_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;
}
/* power control */
ret = power_ctrl(sd, 1);
if (ret)
goto fail_power;
/* according to DS, at least 5ms is needed between DOVDD and PWDN */
/* add this delay time to 10~11ms*/
usleep_range(10000, 11000);
/* gpio ctrl */
ret = gpio_ctrl(sd, 1);
if (ret) {
ret = gpio_ctrl(sd, 1);
if (ret)
goto fail_power;
}
/* flis clock control */
ret = dev->platform_data->flisclk_ctrl(sd, 1);
if (ret)
goto fail_clk;
__cci_delay(up_delay);
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 ov5693_device *dev = to_ov5693_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
dev->focus = OV5693_INVALID_CONFIG;
if (!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 = 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");
return ret;
}
static int power_up(struct v4l2_subdev *sd)
{
static const int retry_count = 4;
int i, ret;
for (i = 0; i < retry_count; i++) {
ret = __power_up(sd);
if (!ret)
return 0;
power_down(sd);
}
return ret;
}
static int ov5693_s_power(struct v4l2_subdev *sd, int on)
{
int ret;
pr_info("%s: on %d\n", __func__, on);
if (on == 0)
return power_down(sd);
else {
ret = power_up(sd);
if (!ret) {
ret = ov5693_init(sd);
/* restore settings */
ov5693_res = ov5693_res_preview;
N_RES = N_RES_PREVIEW;
}
}
return ret;
}
/*
* distance - calculate the distance
* @res: resolution
* @w: width
* @h: height
*
* Get the gap between res_w/res_h and w/h.
* distance = (res_w/res_h - w/h) / (w/h) * 8192
* res->width/height smaller than w/h wouldn't be considered.
* The gap of ratio larger than 1/8 wouldn't be considered.
* Returns the value of gap or -1 if fail.
*/
#define LARGEST_ALLOWED_RATIO_MISMATCH 1024
static int distance(struct ov5693_resolution *res, u32 w, u32 h)
{
int ratio;
int distance;
if (w == 0 || h == 0 ||
res->width < w || res->height < h)
return -1;
ratio = res->width << 13;
ratio /= w;
ratio *= h;
ratio /= res->height;
distance = abs(ratio - 8192);
if (distance > LARGEST_ALLOWED_RATIO_MISMATCH)
return -1;
return distance;
}
/* Return the nearest higher resolution index
* Firstly try to find the approximate aspect ratio resolution
* If we find multiple same AR resolutions, choose the
* minimal size.
*/
static int nearest_resolution_index(int w, int h)
{
int i;
int idx = -1;
int dist;
int min_dist = INT_MAX;
int min_res_w = INT_MAX;
struct ov5693_resolution *tmp_res = NULL;
for (i = 0; i < N_RES; i++) {
tmp_res = &ov5693_res[i];
dist = distance(tmp_res, w, h);
if (dist == -1)
continue;
if (dist < min_dist) {
min_dist = dist;
idx = i;
min_res_w = ov5693_res[i].width;
continue;
}
if (dist == min_dist && ov5693_res[i].width < min_res_w)
idx = i;
}
return idx;
}
static int get_resolution_index(int w, int h)
{
int i;
for (i = 0; i < N_RES; i++) {
if (w != ov5693_res[i].width)
continue;
if (h != ov5693_res[i].height)
continue;
return i;
}
return -1;
}
/* TODO: remove it. */
static int startup(struct v4l2_subdev *sd)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
ret = ov5693_write_reg(client, OV5693_8BIT,
OV5693_SW_RESET, 0x01);
if (ret) {
dev_err(&client->dev, "ov5693 reset err.\n");
return ret;
}
ret = ov5693_write_reg_array(client, ov5693_global_setting);
if (ret) {
dev_err(&client->dev, "ov5693 write register err.\n");
return ret;
}
ret = ov5693_write_reg_array(client, ov5693_res[dev->fmt_idx].regs);
if (ret) {
dev_err(&client->dev, "ov5693 write register err.\n");
return ret;
}
return ret;
}
static int ov5693_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *fmt = &format->format;
struct ov5693_device *dev = to_ov5693_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct camera_mipi_info *ov5693_info = NULL;
int ret = 0;
int idx;
if (format->pad)
return -EINVAL;
if (!fmt)
return -EINVAL;
ov5693_info = v4l2_get_subdev_hostdata(sd);
if (!ov5693_info)
return -EINVAL;
mutex_lock(&dev->input_lock);
idx = nearest_resolution_index(fmt->width, fmt->height);
if (idx == -1) {
/* return the largest resolution */
fmt->width = ov5693_res[N_RES - 1].width;
fmt->height = ov5693_res[N_RES - 1].height;
} else {
fmt->width = ov5693_res[idx].width;
fmt->height = ov5693_res[idx].height;
}
fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
cfg->try_fmt = *fmt;
mutex_unlock(&dev->input_lock);
return 0;
}
dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
if (dev->fmt_idx == -1) {
dev_err(&client->dev, "get resolution fail\n");
mutex_unlock(&dev->input_lock);
return -EINVAL;
}
ret = startup(sd);
if (ret) {
int i = 0;
dev_err(&client->dev, "ov5693 startup err, retry to power up\n");
for (i = 0; i < OV5693_POWER_UP_RETRY_NUM; i++) {
dev_err(&client->dev,
"ov5693 retry to power up %d/%d times, result: ",
i + 1, OV5693_POWER_UP_RETRY_NUM);
power_down(sd);
ret = power_up(sd);
if (!ret) {
mutex_unlock(&dev->input_lock);
ov5693_init(sd);
mutex_lock(&dev->input_lock);
} else {
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;
}
}
}
/*
* After sensor settings are set to HW, sometimes stream is started.
* This would cause ISP timeout because ISP is not ready to receive
* data yet. So add stop streaming here.
*/
ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_SW_STREAM,
OV5693_STOP_STREAMING);
if (ret)
dev_warn(&client->dev, "ov5693 stream off err\n");
ret = ov5693_get_intg_factor(client, ov5693_info,
&ov5693_res[dev->fmt_idx]);
if (ret) {
dev_err(&client->dev, "failed to get integration_factor\n");
goto err;
}
ov5693_info->metadata_width = fmt->width * 10 / 8;
ov5693_info->metadata_height = 1;
ov5693_info->metadata_effective_width = &ov5693_embedded_effective_size;
err:
mutex_unlock(&dev->input_lock);
return ret;
}
static int ov5693_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *fmt = &format->format;
struct ov5693_device *dev = to_ov5693_sensor(sd);
if (format->pad)
return -EINVAL;
if (!fmt)
return -EINVAL;
fmt->width = ov5693_res[dev->fmt_idx].width;
fmt->height = ov5693_res[dev->fmt_idx].height;
fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
return 0;
}
static int ov5693_detect(struct i2c_client *client)
{
struct i2c_adapter *adapter = client->adapter;
u16 high, low;
int ret;
u16 id;
u8 revision;
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return -ENODEV;
ret = ov5693_read_reg(client, OV5693_8BIT,
OV5693_SC_CMMN_CHIP_ID_H, &high);
if (ret) {
dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
return -ENODEV;
}
ret = ov5693_read_reg(client, OV5693_8BIT,
OV5693_SC_CMMN_CHIP_ID_L, &low);
id = ((((u16)high) << 8) | (u16)low);
if (id != OV5693_ID) {
dev_err(&client->dev, "sensor ID error 0x%x\n", id);
return -ENODEV;
}
ret = ov5693_read_reg(client, OV5693_8BIT,
OV5693_SC_CMMN_SUB_ID, &high);
revision = (u8)high & 0x0f;
dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision);
dev_dbg(&client->dev, "detect ov5693 success\n");
return 0;
}
static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
mutex_lock(&dev->input_lock);
ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_SW_STREAM,
enable ? OV5693_START_STREAMING :
OV5693_STOP_STREAMING);
mutex_unlock(&dev->input_lock);
return ret;
}
static int ov5693_s_config(struct v4l2_subdev *sd,
int irq, void *platform_data)
{
struct ov5693_device *dev = to_ov5693_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, "ov5693 power-off err.\n");
goto fail_power_off;
}
ret = power_up(sd);
if (ret) {
dev_err(&client->dev, "ov5693 power-up err.\n");
goto fail_power_on;
}
if (!dev->vcm)
dev->vcm = vcm_detect(client);
ret = dev->platform_data->csi_cfg(sd, 1);
if (ret)
goto fail_csi_cfg;
/* config & detect sensor */
ret = ov5693_detect(client);
if (ret) {
dev_err(&client->dev, "ov5693_detect err s_config.\n");
goto fail_csi_cfg;
}
dev->otp_data = ov5693_otp_read(sd);
/* turn off sensor, after probed */
ret = power_down(sd);
if (ret) {
dev_err(&client->dev, "ov5693 power-off err.\n");
goto fail_csi_cfg;
}
mutex_unlock(&dev->input_lock);
return ret;
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 ov5693_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *interval)
{
struct ov5693_device *dev = to_ov5693_sensor(sd);
interval->interval.numerator = 1;
interval->interval.denominator = ov5693_res[dev->fmt_idx].fps;
return 0;
}
static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
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 ov5693_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
int index = fse->index;
if (index >= N_RES)
return -EINVAL;
fse->min_width = ov5693_res[index].width;
fse->min_height = ov5693_res[index].height;
fse->max_width = ov5693_res[index].width;
fse->max_height = ov5693_res[index].height;
return 0;
}
static const struct v4l2_subdev_video_ops ov5693_video_ops = {
.s_stream = ov5693_s_stream,
.g_frame_interval = ov5693_g_frame_interval,
};
static const struct v4l2_subdev_core_ops ov5693_core_ops = {
.s_power = ov5693_s_power,
.ioctl = ov5693_ioctl,
};
static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
.enum_mbus_code = ov5693_enum_mbus_code,
.enum_frame_size = ov5693_enum_frame_size,
.get_fmt = ov5693_get_fmt,
.set_fmt = ov5693_set_fmt,
};
static const struct v4l2_subdev_ops ov5693_ops = {
.core = &ov5693_core_ops,
.video = &ov5693_video_ops,
.pad = &ov5693_pad_ops,
};
static int ov5693_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov5693_device *dev = to_ov5693_sensor(sd);
dev_dbg(&client->dev, "ov5693_remove...\n");
dev->platform_data->csi_cfg(sd, 0);
v4l2_device_unregister_subdev(sd);
atomisp_gmin_remove_subdev(sd);
media_entity_cleanup(&dev->sd.entity);
v4l2_ctrl_handler_free(&dev->ctrl_handler);
kfree(dev);
return 0;
}
static int ov5693_probe(struct i2c_client *client)
{
struct ov5693_device *dev;
int i2c;
int ret = 0;
void *pdata;
unsigned int i;
acpi_handle handle;
struct acpi_device *adev;
handle = ACPI_HANDLE(&client->dev);
if (!handle || acpi_bus_get_device(handle, &adev)) {
dev_err(&client->dev, "Error could not get ACPI device\n");
return -ENODEV;
}
pr_info("%s: ACPI detected it on bus ID=%s, HID=%s\n",
__func__, acpi_device_bid(adev), acpi_device_hid(adev));
// FIXME: may need to release resources allocated by acpi_bus_get_device()
/*
* Firmware workaround: Some modules use a "secondary default"
* address of 0x10 which doesn't appear on schematics, and
* some BIOS versions haven't gotten the memo. Work around
* via config.
*/
i2c = gmin_get_var_int(&client->dev, false, "I2CAddr", -1);
if (i2c != -1) {
dev_info(&client->dev,
"Overriding firmware-provided I2C address (0x%x) with 0x%x\n",
client->addr, i2c);
client->addr = i2c;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
mutex_init(&dev->input_lock);
dev->fmt_idx = 0;
v4l2_i2c_subdev_init(&dev->sd, client, &ov5693_ops);
pdata = gmin_camera_platform_data(&dev->sd,
ATOMISP_INPUT_FORMAT_RAW_10,
atomisp_bayer_order_bggr);
if (!pdata)
goto out_free;
ret = ov5693_s_config(&dev->sd, client->irq, pdata);
if (ret)
goto out_free;
ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
if (ret)
goto out_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 =
v4l2_ctrl_handler_init(&dev->ctrl_handler,
ARRAY_SIZE(ov5693_controls));
if (ret) {
ov5693_remove(client);
return ret;
}
for (i = 0; i < ARRAY_SIZE(ov5693_controls); i++)
v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov5693_controls[i],
NULL);
if (dev->ctrl_handler.error) {
ov5693_remove(client);
return dev->ctrl_handler.error;
}
/* Use same lock for controls as for everything else. */
dev->ctrl_handler.lock = &dev->input_lock;
dev->sd.ctrl_handler = &dev->ctrl_handler;
ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
if (ret)
ov5693_remove(client);
return ret;
out_free:
v4l2_device_unregister_subdev(&dev->sd);
kfree(dev);
return ret;
}
static const struct acpi_device_id ov5693_acpi_match[] = {
{"INT33BE"},
{},
};
MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
static struct i2c_driver ov5693_driver = {
.driver = {
.name = "ov5693",
.acpi_match_table = ov5693_acpi_match,
},
.probe_new = ov5693_probe,
.remove = ov5693_remove,
};
module_i2c_driver(ov5693_driver);
MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
MODULE_LICENSE("GPL");