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nest-open-source / nest-learning-thermostat / 5.7.1 / linux-imx-ul / refs/heads/master / . / drivers / media / platform / mxc / subdev / ov5647_mipi.c
blob: ff345df1061e0fc60bfb7b29dff3b764ca1c1bdb [file] [log] [blame]
/*
* Copyright (C) 2011-2015 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/ctype.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/of_device.h>
#include <linux/i2c.h>
#include <linux/of_gpio.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/v4l2-mediabus.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#define OV5647_VOLTAGE_ANALOG 2800000
#define OV5647_VOLTAGE_DIGITAL_CORE 1500000
#define OV5647_VOLTAGE_DIGITAL_IO 1800000
#define MIN_FPS 15
#define MAX_FPS 30
#define DEFAULT_FPS 30
#define OV5647_XCLK_MIN 6000000
#define OV5647_XCLK_MAX 24000000
#define OV5647_CHIP_ID_HIGH_BYTE 0x300A
#define OV5647_CHIP_ID_LOW_BYTE 0x300B
enum ov5647_mode {
ov5647_mode_MIN = 0,
ov5647_mode_VGA_640_480 = 0,
ov5647_mode_720P_1280_720 = 1,
ov5647_mode_1080P_1920_1080 = 2,
ov5647_mode_QSXGA_2592_1944 = 3,
ov5647_mode_MAX = 3,
ov5647_mode_INIT = 0xff, /*only for sensor init*/
};
enum ov5647_frame_rate {
ov5647_15_fps,
ov5647_30_fps
};
static int ov5647_framerates[] = {
[ov5647_15_fps] = 15,
[ov5647_30_fps] = 30,
};
struct ov5647_datafmt {
u32 code;
enum v4l2_colorspace colorspace;
};
/* image size under 1280 * 960 are SUBSAMPLING
* image size upper 1280 * 960 are SCALING
*/
enum ov5647_downsize_mode {
SUBSAMPLING,
SCALING,
};
struct reg_value {
u16 u16RegAddr;
u8 u8Val;
u8 u8Mask;
u32 u32Delay_ms;
};
struct ov5647_mode_info {
enum ov5647_mode mode;
enum ov5647_downsize_mode dn_mode;
u32 width;
u32 height;
struct reg_value *init_data_ptr;
u32 init_data_size;
};
struct otp_struct {
int customer_id;
int module_integrator_id;
int lens_id;
int rg_ratio;
int bg_ratio;
int user_data[3];
int light_rg;
int light_bg;
};
struct ov5647 {
struct v4l2_subdev subdev;
struct i2c_client *i2c_client;
struct v4l2_pix_format pix;
const struct ov5647_datafmt *fmt;
struct v4l2_captureparm streamcap;
bool on;
/* control settings */
int brightness;
int hue;
int contrast;
int saturation;
int red;
int green;
int blue;
int ae_mode;
u32 mclk;
u8 mclk_source;
struct clk *sensor_clk;
int csi;
void (*io_init)(void);
};
/*!
* Maintains the information on the current state of the sesor.
*/
static struct ov5647 ov5647_data;
static int pwn_gpio, rst_gpio;
static int prev_sysclk, prev_HTS;
static int AE_low, AE_high, AE_Target = 52;
/* R/G and B/G of typical camera module is defined here,
* the typical camera module is selected by CameraAnalyzer. */
static int RG_Ratio_Typical = 0x70;
static int BG_Ratio_Typical = 0x70;
static struct reg_value ov5647_init_setting[] = {
{0x0100, 0x00, 0, 0}, {0x3035, 0x11, 0, 0},
{0x3036, 0x69, 0, 0}, {0x303c, 0x11, 0, 0}, {0x3821, 0x07, 0, 0},
{0x3820, 0x41, 0, 0}, {0x370c, 0x0f, 0, 0}, {0x3612, 0x59, 0, 0},
{0x3618, 0x00, 0, 0}, {0x5000, 0x06, 0, 0}, {0x5002, 0x40, 0, 0},
{0x5003, 0x08, 0, 0}, {0x5a00, 0x08, 0, 0}, {0x3000, 0xff, 0, 0},
{0x3001, 0xff, 0, 0}, {0x3002, 0xff, 0, 0}, {0x301d, 0xf0, 0, 0},
{0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3c01, 0x80, 0, 0},
{0x3b07, 0x0c, 0, 0}, {0x380c, 0x07, 0, 0}, {0x380d, 0x68, 0, 0},
{0x380e, 0x03, 0, 0}, {0x380f, 0xd8, 0, 0}, {0x3814, 0x31, 0, 0},
{0x3815, 0x31, 0, 0}, {0x3708, 0x64, 0, 0}, {0x3709, 0x52, 0, 0},
{0x3808, 0x05, 0, 0}, {0x3809, 0x00, 0, 0}, {0x380a, 0x03, 0, 0},
{0x380b, 0xc0, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x18, 0, 0},
{0x3802, 0x00, 0, 0}, {0x3803, 0x0e, 0, 0}, {0x3804, 0x0a, 0, 0},
{0x3805, 0x27, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x95, 0, 0},
{0x3630, 0x2e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x23, 0, 0},
{0x3634, 0x44, 0, 0}, {0x3620, 0x64, 0, 0}, {0x3621, 0xe0, 0, 0},
{0x3600, 0x37, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
{0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x3731, 0x02, 0, 0},
{0x370b, 0x60, 0, 0}, {0x3705, 0x1a, 0, 0}, {0x3f05, 0x02, 0, 0},
{0x3f06, 0x10, 0, 0}, {0x3f01, 0x0a, 0, 0}, {0x3a08, 0x01, 0, 0},
{0x3a09, 0x27, 0, 0}, {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0},
{0x3a0d, 0x04, 0, 0}, {0x3a0e, 0x03, 0, 0}, {0x3a0f, 0x58, 0, 0},
{0x3a10, 0x50, 0, 0}, {0x3a1b, 0x58, 0, 0}, {0x3a1e, 0x50, 0, 0},
{0x3a11, 0x60, 0, 0}, {0x3a1f, 0x28, 0, 0}, {0x4001, 0x02, 0, 0},
{0x4004, 0x02, 0, 0}, {0x4000, 0x09, 0, 0}, {0x4050, 0x6e, 0, 0},
{0x4051, 0x8f, 0, 0}, {0x4837, 0x17, 0, 0}, {0x3503, 0x03, 0, 0},
{0x3501, 0x44, 0, 0}, {0x3502, 0x80, 0, 0}, {0x350a, 0x00, 0, 0},
{0x350b, 0x7f, 0, 0}, {0x5001, 0x01, 0, 0}, {0x5002, 0x41, 0, 0},
{0x5180, 0x08, 0, 0}, {0x5186, 0x04, 0, 0}, {0x5187, 0x00, 0, 0},
{0x5188, 0x04, 0, 0}, {0x5189, 0x00, 0, 0}, {0x518a, 0x04, 0, 0},
{0x518b, 0x00, 0, 0}, {0x5000, 0x86, 0, 0}, {0x5800, 0x11, 0, 0},
{0x5801, 0x0a, 0, 0}, {0x5802, 0x09, 0, 0}, {0x5803, 0x09, 0, 0},
{0x5804, 0x0a, 0, 0}, {0x5805, 0x0f, 0, 0}, {0x5806, 0x07, 0, 0},
{0x5807, 0x05, 0, 0}, {0x5808, 0x03, 0, 0}, {0x5809, 0x03, 0, 0},
{0x580a, 0x05, 0, 0}, {0x580b, 0x07, 0, 0}, {0x580c, 0x05, 0, 0},
{0x580d, 0x02, 0, 0}, {0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0},
{0x5810, 0x02, 0, 0}, {0x5811, 0x05, 0, 0}, {0x5812, 0x05, 0, 0},
{0x5813, 0x02, 0, 0}, {0x5814, 0x00, 0, 0}, {0x5815, 0x00, 0, 0},
{0x5816, 0x01, 0, 0}, {0x5817, 0x05, 0, 0}, {0x5818, 0x08, 0, 0},
{0x5819, 0x05, 0, 0}, {0x581a, 0x03, 0, 0}, {0x581b, 0x03, 0, 0},
{0x581c, 0x04, 0, 0}, {0x581d, 0x07, 0, 0}, {0x581e, 0x10, 0, 0},
{0x581f, 0x0b, 0, 0}, {0x5820, 0x09, 0, 0}, {0x5821, 0x09, 0, 0},
{0x5822, 0x09, 0, 0}, {0x5823, 0x0e, 0, 0}, {0x5824, 0x28, 0, 0},
{0x5825, 0x1a, 0, 0}, {0x5826, 0x1a, 0, 0}, {0x5827, 0x1a, 0, 0},
{0x5828, 0x46, 0, 0}, {0x5829, 0x2a, 0, 0}, {0x582a, 0x26, 0, 0},
{0x582b, 0x44, 0, 0}, {0x582c, 0x26, 0, 0}, {0x582d, 0x2a, 0, 0},
{0x582e, 0x28, 0, 0}, {0x582f, 0x42, 0, 0}, {0x5830, 0x40, 0, 0},
{0x5831, 0x42, 0, 0}, {0x5832, 0x28, 0, 0}, {0x5833, 0x0a, 0, 0},
{0x5834, 0x16, 0, 0}, {0x5835, 0x44, 0, 0}, {0x5836, 0x26, 0, 0},
{0x5837, 0x2a, 0, 0}, {0x5838, 0x28, 0, 0}, {0x5839, 0x0a, 0, 0},
{0x583a, 0x0a, 0, 0}, {0x583b, 0x0a, 0, 0}, {0x583c, 0x26, 0, 0},
{0x583d, 0xbe, 0, 0}, {0x0100, 0x01, 0, 0}, {0x3000, 0x00, 0, 0},
{0x3001, 0x00, 0, 0}, {0x3002, 0x00, 0, 0}, {0x3017, 0xe0, 0, 0},
{0x301c, 0xfc, 0, 0}, {0x3636, 0x06, 0, 0}, {0x3016, 0x08, 0, 0},
{0x3827, 0xec, 0, 0}, {0x3018, 0x44, 0, 0}, {0x3035, 0x21, 0, 0},
{0x3106, 0xf5, 0, 0}, {0x3034, 0x18, 0, 0}, {0x301c, 0xf8, 0, 0},
};
static struct reg_value ov5647_setting_60fps_VGA_640_480[] = {
{0x0100, 0x00, 0, 0}, {0x3035, 0x11, 0, 0},
{0x3036, 0x46, 0, 0}, {0x303c, 0x11, 0, 0}, {0x3821, 0x07, 0, 0},
{0x3820, 0x41, 0, 0}, {0x370c, 0x0f, 0, 0}, {0x3612, 0x59, 0, 0},
{0x3618, 0x00, 0, 0}, {0x5000, 0x06, 0, 0}, {0x5002, 0x40, 0, 0},
{0x5003, 0x08, 0, 0}, {0x5a00, 0x08, 0, 0}, {0x3000, 0xff, 0, 0},
{0x3001, 0xff, 0, 0}, {0x3002, 0xff, 0, 0}, {0x301d, 0xf0, 0, 0},
{0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3c01, 0x80, 0, 0},
{0x3b07, 0x0c, 0, 0}, {0x380c, 0x07, 0, 0}, {0x380d, 0x3c, 0, 0},
{0x380e, 0x01, 0, 0}, {0x380f, 0xf8, 0, 0}, {0x3814, 0x71, 0, 0},
{0x3815, 0x71, 0, 0}, {0x3708, 0x64, 0, 0}, {0x3709, 0x52, 0, 0},
{0x3808, 0x02, 0, 0}, {0x3809, 0x80, 0, 0}, {0x380a, 0x01, 0, 0},
{0x380b, 0xe0, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x10, 0, 0},
{0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
{0x3805, 0x2f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
{0x3630, 0x2e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x23, 0, 0},
{0x3634, 0x44, 0, 0}, {0x3620, 0x64, 0, 0}, {0x3621, 0xe0, 0, 0},
{0x3600, 0x37, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
{0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x3731, 0x02, 0, 0},
{0x370b, 0x60, 0, 0}, {0x3705, 0x1a, 0, 0}, {0x3f05, 0x02, 0, 0},
{0x3f06, 0x10, 0, 0}, {0x3f01, 0x0a, 0, 0}, {0x3a08, 0x01, 0, 0},
{0x3a09, 0x2e, 0, 0}, {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xfb, 0, 0},
{0x3a0d, 0x02, 0, 0}, {0x3a0e, 0x01, 0, 0}, {0x3a0f, 0x58, 0, 0},
{0x3a10, 0x50, 0, 0}, {0x3a1b, 0x58, 0, 0}, {0x3a1e, 0x50, 0, 0},
{0x3a11, 0x60, 0, 0}, {0x3a1f, 0x28, 0, 0}, {0x4001, 0x02, 0, 0},
{0x4004, 0x02, 0, 0}, {0x4000, 0x09, 0, 0}, {0x4050, 0x6e, 0, 0},
{0x4051, 0x8f, 0, 0}, {0x0100, 0x01, 0, 0}, {0x3000, 0x00, 0, 0},
{0x3001, 0x00, 0, 0}, {0x3002, 0x00, 0, 0}, {0x3017, 0xe0, 0, 0},
{0x301c, 0xfc, 0, 0}, {0x3636, 0x06, 0, 0}, {0x3016, 0x08, 0, 0},
{0x3827, 0xec, 0, 0}, {0x3018, 0x44, 0, 0}, {0x3035, 0x21, 0, 0},
{0x3106, 0xf5, 0, 0}, {0x3034, 0x18, 0, 0}, {0x301c, 0xf8, 0, 0},
};
static struct reg_value ov5647_setting_30fps_720P_1280_720[] = {
{0x0100, 0x00, 0, 0}, {0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0},
{0x3612, 0x59, 0, 0}, {0x3618, 0x00, 0, 0}, {0x380c, 0x09, 0, 0},
{0x380d, 0xe8, 0, 0}, {0x380e, 0x04, 0, 0}, {0x380f, 0x50, 0, 0},
{0x3814, 0x31, 0, 0}, {0x3815, 0x31, 0, 0}, {0x3709, 0x52, 0, 0},
{0x3808, 0x05, 0, 0}, {0x3809, 0x00, 0, 0}, {0x380a, 0x02, 0, 0},
{0x380b, 0xd0, 0, 0}, {0x3801, 0x18, 0, 0}, {0x3802, 0x00, 0, 0},
{0x3803, 0xf8, 0, 0}, {0x3804, 0x0a, 0, 0}, {0x3805, 0x27, 0, 0},
{0x3806, 0x06, 0, 0}, {0x3807, 0xa7, 0, 0}, {0x3a09, 0xbe, 0, 0},
{0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x74, 0, 0}, {0x3a0d, 0x02, 0, 0},
{0x3a0e, 0x01, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4005, 0x18, 0, 0},
{0x0100, 0x01, 0, 0},
};
static struct reg_value ov5647_setting_30fps_1080P_1920_1080[] = {
{0x0100, 0x00, 0, 0}, {0x3820, 0x00, 0, 0}, {0x3821, 0x06, 0, 0},
{0x3612, 0x5b, 0, 0}, {0x3618, 0x04, 0, 0}, {0x380c, 0x09, 0, 0},
{0x380d, 0xe8, 0, 0}, {0x380e, 0x04, 0, 0}, {0x380f, 0x50, 0, 0},
{0x3814, 0x11, 0, 0}, {0x3815, 0x11, 0, 0}, {0x3709, 0x12, 0, 0},
{0x3808, 0x07, 0, 0}, {0x3809, 0x80, 0, 0}, {0x380a, 0x04, 0, 0},
{0x380b, 0x38, 0, 0}, {0x3801, 0x5c, 0, 0}, {0x3802, 0x01, 0, 0},
{0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xe3, 0, 0},
{0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0}, {0x3a09, 0x4b, 0, 0},
{0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x13, 0, 0}, {0x3a0d, 0x04, 0, 0},
{0x3a0e, 0x03, 0, 0}, {0x4004, 0x04, 0, 0}, {0x4005, 0x18, 0, 0},
{0x0100, 0x01, 0, 0},
};
static struct reg_value ov5647_setting_15fps_QSXGA_2592_1944[] = {
{0x0100, 0x00, 0, 0}, {0x3820, 0x00, 0, 0}, {0x3821, 0x06, 0, 0},
{0x3612, 0x5b, 0, 0}, {0x3618, 0x04, 0, 0}, {0x380c, 0x0b, 0, 0},
{0x380d, 0x10, 0, 0}, {0x380e, 0x07, 0, 0}, {0x380f, 0xb8, 0, 0},
{0x3814, 0x11, 0, 0}, {0x3815, 0x11, 0, 0}, {0x3709, 0x12, 0, 0},
{0x3808, 0x0a, 0, 0}, {0x3809, 0x20, 0, 0}, {0x380a, 0x07, 0, 0},
{0x380b, 0x98, 0, 0}, {0x3801, 0x0c, 0, 0}, {0x3802, 0x00, 0, 0},
{0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0}, {0x3805, 0x33, 0, 0},
{0x3806, 0x07, 0, 0}, {0x3807, 0xa3, 0, 0}, {0x3a09, 0x28, 0, 0},
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0d, 0x08, 0, 0},
{0x3a0e, 0x06, 0, 0}, {0x4004, 0x04, 0, 0}, {0x4005, 0x1a, 0, 0},
{0x0100, 0x01, 0, 0},
};
static struct ov5647_mode_info ov5647_mode_info_data[2][ov5647_mode_MAX + 1] = {
{
{ov5647_mode_VGA_640_480, -1, 0, 0, NULL, 0},
{ov5647_mode_720P_1280_720, -1, 0, 0, NULL, 0},
{ov5647_mode_1080P_1920_1080, -1, 0, 0, NULL, 0},
{ov5647_mode_QSXGA_2592_1944, SCALING, 2592, 1944,
ov5647_setting_15fps_QSXGA_2592_1944,
ARRAY_SIZE(ov5647_setting_15fps_QSXGA_2592_1944)},
},
{
/* Actually VGA working in 60fps mode */
{ov5647_mode_VGA_640_480, SUBSAMPLING, 640, 480,
ov5647_setting_60fps_VGA_640_480,
ARRAY_SIZE(ov5647_setting_60fps_VGA_640_480)},
{ov5647_mode_720P_1280_720, SUBSAMPLING, 1280, 720,
ov5647_setting_30fps_720P_1280_720,
ARRAY_SIZE(ov5647_setting_30fps_720P_1280_720)},
{ov5647_mode_1080P_1920_1080, SCALING, 1920, 1080,
ov5647_setting_30fps_1080P_1920_1080,
ARRAY_SIZE(ov5647_setting_30fps_1080P_1920_1080)},
{ov5647_mode_QSXGA_2592_1944, -1, 0, 0, NULL, 0},
},
};
static struct regulator *io_regulator;
static struct regulator *core_regulator;
static struct regulator *analog_regulator;
static struct regulator *gpo_regulator;
static int ov5647_probe(struct i2c_client *adapter,
const struct i2c_device_id *device_id);
static int ov5647_remove(struct i2c_client *client);
static s32 ov5647_read_reg(u16 reg, u8 *val);
static s32 ov5647_write_reg(u16 reg, u8 val);
static const struct i2c_device_id ov5647_id[] = {
{"ov5647_mipi", 0},
{},
};
MODULE_DEVICE_TABLE(i2c, ov5647_id);
static struct i2c_driver ov5647_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "ov5647_mipi",
},
.probe = ov5647_probe,
.remove = ov5647_remove,
.id_table = ov5647_id,
};
static const struct ov5647_datafmt ov5647_colour_fmts[] = {
{MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_JPEG},
};
static struct ov5647 *to_ov5647(const struct i2c_client *client)
{
return container_of(i2c_get_clientdata(client), struct ov5647, subdev);
}
/* Find a data format by a pixel code in an array */
static const struct ov5647_datafmt
*ov5647_find_datafmt(u32 code)
{
int i;
for (i = 0; i < ARRAY_SIZE(ov5647_colour_fmts); i++)
if (ov5647_colour_fmts[i].code == code)
return ov5647_colour_fmts + i;
return NULL;
}
static inline void ov5647_power_down(int enable)
{
if (pwn_gpio < 0)
return;
/* 19x19 pwdn pin invert by mipi daughter card */
if (!enable)
gpio_set_value_cansleep(pwn_gpio, 1);
else
gpio_set_value_cansleep(pwn_gpio, 0);
msleep(2);
}
static void ov5647_reset(void)
{
if (rst_gpio < 0 || pwn_gpio < 0)
return;
/* camera reset */
gpio_set_value_cansleep(rst_gpio, 1);
/* camera power dowmn */
gpio_set_value_cansleep(pwn_gpio, 1);
msleep(5);
gpio_set_value_cansleep(pwn_gpio, 0);
msleep(5);
gpio_set_value_cansleep(rst_gpio, 0);
msleep(1);
gpio_set_value_cansleep(rst_gpio, 1);
msleep(5);
gpio_set_value_cansleep(pwn_gpio, 1);
}
static int ov5647_regulator_enable(struct device *dev)
{
int ret = 0;
io_regulator = devm_regulator_get(dev, "DOVDD");
if (!IS_ERR(io_regulator)) {
regulator_set_voltage(io_regulator,
OV5647_VOLTAGE_DIGITAL_IO,
OV5647_VOLTAGE_DIGITAL_IO);
ret = regulator_enable(io_regulator);
if (ret) {
pr_err("%s:io set voltage error\n", __func__);
return ret;
} else {
dev_dbg(dev,
"%s:io set voltage ok\n", __func__);
}
} else {
pr_err("%s: cannot get io voltage error\n", __func__);
io_regulator = NULL;
}
core_regulator = devm_regulator_get(dev, "DVDD");
if (!IS_ERR(core_regulator)) {
regulator_set_voltage(core_regulator,
OV5647_VOLTAGE_DIGITAL_CORE,
OV5647_VOLTAGE_DIGITAL_CORE);
ret = regulator_enable(core_regulator);
if (ret) {
pr_err("%s:core set voltage error\n", __func__);
return ret;
} else {
dev_dbg(dev,
"%s:core set voltage ok\n", __func__);
}
} else {
core_regulator = NULL;
pr_err("%s: cannot get core voltage error\n", __func__);
}
analog_regulator = devm_regulator_get(dev, "AVDD");
if (!IS_ERR(analog_regulator)) {
regulator_set_voltage(analog_regulator,
OV5647_VOLTAGE_ANALOG,
OV5647_VOLTAGE_ANALOG);
ret = regulator_enable(analog_regulator);
if (ret) {
pr_err("%s:analog set voltage error\n",
__func__);
return ret;
} else {
dev_dbg(dev,
"%s:analog set voltage ok\n", __func__);
}
} else {
analog_regulator = NULL;
pr_err("%s: cannot get analog voltage error\n", __func__);
}
return ret;
}
static s32 ov5647_write_reg(u16 reg, u8 val)
{
u8 au8Buf[3] = {0};
au8Buf[0] = reg >> 8;
au8Buf[1] = reg & 0xff;
au8Buf[2] = val;
if (i2c_master_send(ov5647_data.i2c_client, au8Buf, 3) < 0) {
pr_err("%s:write reg error:reg=%x,val=%x\n",
__func__, reg, val);
return -1;
}
return 0;
}
static s32 ov5647_read_reg(u16 reg, u8 *val)
{
u8 au8RegBuf[2] = {0};
u8 u8RdVal = 0;
au8RegBuf[0] = reg >> 8;
au8RegBuf[1] = reg & 0xff;
if (2 != i2c_master_send(ov5647_data.i2c_client, au8RegBuf, 2)) {
pr_err("%s:write reg error:reg=%x\n",
__func__, reg);
return -1;
}
if (1 != i2c_master_recv(ov5647_data.i2c_client, &u8RdVal, 1)) {
pr_err("%s:read reg error:reg=%x,val=%x\n",
__func__, reg, u8RdVal);
return -1;
}
*val = u8RdVal;
return u8RdVal;
}
/* index: index of otp group. (0, 1, 2)
* return:
* 0, group index is empty
* 1, group index has invalid data
* 2, group index has valid data */
static int ov5647_check_otp(int index)
{
int i;
int address;
u8 temp;
/* read otp into buffer */
ov5647_write_reg(0x3d21, 0x01);
msleep(20);
address = 0x3d05 + index * 9;
temp = ov5647_read_reg(address, &temp);
/* disable otp read */
ov5647_write_reg(0x3d21, 0x00);
/* clear otp buffer */
for (i = 0; i < 32; i++)
ov5647_write_reg(0x3d00 + i, 0x00);
if (!temp)
return 0;
else if ((!(temp & 0x80)) && (temp & 0x7f))
return 2;
else
return 1;
}
/* index: index of otp group. (0, 1, 2)
* return: 0 */
static int ov5647_read_otp(int index, struct otp_struct *otp_ptr)
{
int i;
int address;
u8 temp;
/* read otp into buffer */
ov5647_write_reg(0x3d21, 0x01);
msleep(2);
address = 0x3d05 + index * 9;
temp = ov5647_read_reg(address, &temp);
(*otp_ptr).customer_id = temp & 0x7f;
(*otp_ptr).module_integrator_id = ov5647_read_reg(address, &temp);
(*otp_ptr).lens_id = ov5647_read_reg(address + 1, &temp);
(*otp_ptr).rg_ratio = ov5647_read_reg(address + 2, &temp);
(*otp_ptr).bg_ratio = ov5647_read_reg(address + 3, &temp);
(*otp_ptr).user_data[0] = ov5647_read_reg(address + 4, &temp);
(*otp_ptr).user_data[1] = ov5647_read_reg(address + 5, &temp);
(*otp_ptr).user_data[2] = ov5647_read_reg(address + 6, &temp);
(*otp_ptr).light_rg = ov5647_read_reg(address + 7, &temp);
(*otp_ptr).light_bg = ov5647_read_reg(address + 8, &temp);
/* disable otp read */
ov5647_write_reg(0x3d21, 0x00);
/* clear otp buffer */
for (i = 0; i < 32; i++)
ov5647_write_reg(0x3d00 + i, 0x00);
return 0;
}
/* R_gain, sensor red gain of AWB, 0x400 =1
* G_gain, sensor green gain of AWB, 0x400 =1
* B_gain, sensor blue gain of AWB, 0x400 =1
* return 0 */
static int ov5647_update_awb_gain(int R_gain, int G_gain, int B_gain)
{
if (R_gain > 0x400) {
ov5647_write_reg(0x5186, R_gain >> 8);
ov5647_write_reg(0x5187, R_gain & 0x00ff);
}
if (G_gain > 0x400) {
ov5647_write_reg(0x5188, G_gain >> 8);
ov5647_write_reg(0x5189, G_gain & 0x00ff);
}
if (B_gain > 0x400) {
ov5647_write_reg(0x518a, B_gain >> 8);
ov5647_write_reg(0x518b, B_gain & 0x00ff);
}
return 0;
}
/* call this function after OV5647 initialization
* return value:
* 0 update success
* 1 no OTP */
static int ov5647_update_otp(void)
{
struct otp_struct current_otp;
int i;
int otp_index;
int temp;
int R_gain, G_gain, B_gain, G_gain_R, G_gain_B;
int rg, bg;
/* R/G and B/G of current camera module is read out from sensor OTP
* check first OTP with valid data */
for (i = 0; i < 3; i++) {
temp = ov5647_check_otp(i);
if (temp == 2) {
otp_index = i;
break;
}
}
if (i == 3) {
/* no valid wb OTP data */
printk(KERN_WARNING "No valid wb otp data\n");
return 1;
}
ov5647_read_otp(otp_index, &current_otp);
if (current_otp.light_rg == 0)
rg = current_otp.rg_ratio;
else
rg = current_otp.rg_ratio * (current_otp.light_rg + 128) / 256;
if (current_otp.light_bg == 0)
bg = current_otp.bg_ratio;
else
bg = current_otp.bg_ratio * (current_otp.light_bg + 128) / 256;
/* calculate G gain
* 0x400 = 1x gain */
if (bg < BG_Ratio_Typical) {
if (rg < RG_Ratio_Typical) {
/* current_otp.bg_ratio < BG_Ratio_typical &&
* current_otp.rg_ratio < RG_Ratio_typical */
G_gain = 0x400;
B_gain = 0x400 * BG_Ratio_Typical / bg;
R_gain = 0x400 * RG_Ratio_Typical / rg;
} else {
/* current_otp.bg_ratio < BG_Ratio_typical &&
* current_otp.rg_ratio >= RG_Ratio_typical */
R_gain = 0x400;
G_gain = 0x400 * rg / RG_Ratio_Typical;
B_gain = G_gain * BG_Ratio_Typical / bg;
}
} else {
if (rg < RG_Ratio_Typical) {
/* current_otp.bg_ratio >= BG_Ratio_typical &&
* current_otp.rg_ratio < RG_Ratio_typical */
B_gain = 0x400;
G_gain = 0x400 * bg / BG_Ratio_Typical;
R_gain = G_gain * RG_Ratio_Typical / rg;
} else {
/* current_otp.bg_ratio >= BG_Ratio_typical &&
* current_otp.rg_ratio >= RG_Ratio_typical */
G_gain_B = 0x400 * bg / BG_Ratio_Typical;
G_gain_R = 0x400 * rg / RG_Ratio_Typical;
if (G_gain_B > G_gain_R) {
B_gain = 0x400;
G_gain = G_gain_B;
R_gain = G_gain * RG_Ratio_Typical / rg;
} else {
R_gain = 0x400;
G_gain = G_gain_R;
B_gain = G_gain * BG_Ratio_Typical / bg;
}
}
}
ov5647_update_awb_gain(R_gain, G_gain, B_gain);
return 0;
}
static void ov5647_stream_on(void)
{
ov5647_write_reg(0x4202, 0x00);
}
static void ov5647_stream_off(void)
{
ov5647_write_reg(0x4202, 0x0f);
/* both clock and data lane in LP00 */
ov5647_write_reg(0x0100, 0x00);
}
static int ov5647_get_sysclk(void)
{
/* calculate sysclk */
int xvclk = ov5647_data.mclk / 10000;
int sysclk, temp1, temp2;
int pre_div02x, div_cnt7b, sdiv0, pll_rdiv, bit_div2x, sclk_div, VCO;
int pre_div02x_map[] = {2, 2, 4, 6, 8, 3, 12, 5, 16, 2, 2, 2, 2, 2, 2, 2};
int sdiv0_map[] = {16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
int pll_rdiv_map[] = {1, 2};
int bit_div2x_map[] = {2, 2, 2, 2, 2, 2, 2, 2, 4, 2, 5, 2, 2, 2, 2, 2};
int sclk_div_map[] = {1, 2, 4, 1};
u8 temp;
temp1 = ov5647_read_reg(0x3037, &temp);
temp2 = temp1 & 0x0f;
pre_div02x = pre_div02x_map[temp2];
temp2 = (temp1 >> 4) & 0x01;
pll_rdiv = pll_rdiv_map[temp2];
temp1 = ov5647_read_reg(0x3036, &temp);
div_cnt7b = temp1;
VCO = xvclk * 2 / pre_div02x * div_cnt7b;
temp1 = ov5647_read_reg(0x3035, &temp);
temp2 = temp1 >> 4;
sdiv0 = sdiv0_map[temp2];
temp1 = ov5647_read_reg(0x3034, &temp);
temp2 = temp1 & 0x0f;
bit_div2x = bit_div2x_map[temp2];
temp1 = ov5647_read_reg(0x3106, &temp);
temp2 = (temp1 >> 2) & 0x03;
sclk_div = sclk_div_map[temp2];
sysclk = VCO * 2 / sdiv0 / pll_rdiv / bit_div2x / sclk_div;
return sysclk;
}
static void ov5647_set_night_mode(void)
{
/* read HTS from register settings */
u8 mode;
ov5647_read_reg(0x3a00, &mode);
mode &= 0xfb;
ov5647_write_reg(0x3a00, mode);
}
static int ov5647_get_HTS(void)
{
/* read HTS from register settings */
int HTS;
u8 temp;
HTS = ov5647_read_reg(0x380c, &temp);
HTS = (HTS << 8) + ov5647_read_reg(0x380d, &temp);
return HTS;
}
static int ov5647_soft_reset(void)
{
/* soft reset ov5647 */
ov5647_write_reg(0x0103, 0x1);
msleep(5);
return 0;
}
static int ov5647_get_VTS(void)
{
/* read VTS from register settings */
int VTS;
u8 temp;
/* total vertical size[15:8] high byte */
VTS = ov5647_read_reg(0x380e, &temp);
VTS = (VTS << 8) + ov5647_read_reg(0x380f, &temp);
return VTS;
}
static int ov5647_set_VTS(int VTS)
{
/* write VTS to registers */
int temp;
temp = VTS & 0xff;
ov5647_write_reg(0x380f, temp);
temp = VTS >> 8;
ov5647_write_reg(0x380e, temp);
return 0;
}
static int ov5647_get_shutter(void)
{
/* read shutter, in number of line period */
int shutter;
u8 temp;
shutter = (ov5647_read_reg(0x03500, &temp) & 0x0f);
shutter = (shutter << 8) + ov5647_read_reg(0x3501, &temp);
shutter = (shutter << 4) + (ov5647_read_reg(0x3502, &temp)>>4);
return shutter;
}
static int ov5647_set_shutter(int shutter)
{
/* write shutter, in number of line period */
int temp;
shutter = shutter & 0xffff;
temp = shutter & 0x0f;
temp = temp << 4;
ov5647_write_reg(0x3502, temp);
temp = shutter & 0xfff;
temp = temp >> 4;
ov5647_write_reg(0x3501, temp);
temp = shutter >> 12;
ov5647_write_reg(0x3500, temp);
return 0;
}
static int ov5647_get_gain16(void)
{
/* read gain, 16 = 1x */
int gain16;
u8 temp;
gain16 = ov5647_read_reg(0x350a, &temp) & 0x03;
gain16 = (gain16 << 8) + ov5647_read_reg(0x350b, &temp);
return gain16;
}
static int ov5647_set_gain16(int gain16)
{
/* write gain, 16 = 1x */
u8 temp;
gain16 = gain16 & 0x3ff;
temp = gain16 & 0xff;
ov5647_write_reg(0x350b, temp);
temp = gain16 >> 8;
ov5647_write_reg(0x350a, temp);
return 0;
}
static int ov5647_get_light_freq(void)
{
/* get banding filter value */
int temp, temp1, light_freq = 0;
u8 tmp;
temp = ov5647_read_reg(0x3c01, &tmp);
if (temp & 0x80) {
/* manual */
temp1 = ov5647_read_reg(0x3c00, &tmp);
if (temp1 & 0x04) {
/* 50Hz */
light_freq = 50;
} else {
/* 60Hz */
light_freq = 60;
}
} else {
/* auto */
temp1 = ov5647_read_reg(0x3c0c, &tmp);
if (temp1 & 0x01) {
/* 50Hz */
light_freq = 50;
} else {
/* 60Hz */
}
}
return light_freq;
}
static void ov5647_set_bandingfilter(void)
{
int prev_VTS;
int band_step60, max_band60, band_step50, max_band50;
/* read preview PCLK */
prev_sysclk = ov5647_get_sysclk();
/* read preview HTS */
prev_HTS = ov5647_get_HTS();
/* read preview VTS */
prev_VTS = ov5647_get_VTS();
/* calculate banding filter */
/* 60Hz */
band_step60 = prev_sysclk * 100/prev_HTS * 100/120;
ov5647_write_reg(0x3a0a, (band_step60 >> 8));
ov5647_write_reg(0x3a0b, (band_step60 & 0xff));
max_band60 = (int)((prev_VTS-4)/band_step60);
ov5647_write_reg(0x3a0d, max_band60);
/* 50Hz */
band_step50 = prev_sysclk * 100/prev_HTS;
ov5647_write_reg(0x3a08, (band_step50 >> 8));
ov5647_write_reg(0x3a09, (band_step50 & 0xff));
max_band50 = (int)((prev_VTS-4)/band_step50);
ov5647_write_reg(0x3a0e, max_band50);
}
static int ov5647_set_AE_target(int target)
{
/* stable in high */
int fast_high, fast_low;
AE_low = target * 23 / 25; /* 0.92 */
AE_high = target * 27 / 25; /* 1.08 */
fast_high = AE_high<<1;
if (fast_high > 255)
fast_high = 255;
fast_low = AE_low >> 1;
ov5647_write_reg(0x3a0f, AE_high);
ov5647_write_reg(0x3a10, AE_low);
ov5647_write_reg(0x3a1b, AE_high);
ov5647_write_reg(0x3a1e, AE_low);
ov5647_write_reg(0x3a11, fast_high);
ov5647_write_reg(0x3a1f, fast_low);
return 0;
}
static void ov5647_turn_on_AE_AG(int enable)
{
u8 ae_ag_ctrl;
ov5647_read_reg(0x3503, &ae_ag_ctrl);
if (enable) {
/* turn on auto AE/AG */
ae_ag_ctrl = ae_ag_ctrl & ~(0x03);
} else {
/* turn off AE/AG */
ae_ag_ctrl = ae_ag_ctrl | 0x03;
}
ov5647_write_reg(0x3503, ae_ag_ctrl);
}
static void ov5647_set_virtual_channel(int channel)
{
u8 channel_id;
ov5647_read_reg(0x4814, &channel_id);
channel_id &= ~(3 << 6);
ov5647_write_reg(0x4814, channel_id | (channel << 6));
}
/* download ov5647 settings to sensor through i2c */
static int ov5647_download_firmware(struct reg_value *pModeSetting, s32 ArySize)
{
register u32 Delay_ms = 0;
register u16 RegAddr = 0;
register u8 Mask = 0;
register u8 Val = 0;
u8 RegVal = 0;
int i, retval = 0;
for (i = 0; i < ArySize; ++i, ++pModeSetting) {
Delay_ms = pModeSetting->u32Delay_ms;
RegAddr = pModeSetting->u16RegAddr;
Val = pModeSetting->u8Val;
Mask = pModeSetting->u8Mask;
if (Mask) {
retval = ov5647_read_reg(RegAddr, &RegVal);
if (retval < 0)
goto err;
RegVal &= ~(u8)Mask;
Val &= Mask;
Val |= RegVal;
}
retval = ov5647_write_reg(RegAddr, Val);
if (retval < 0)
goto err;
if (Delay_ms)
msleep(Delay_ms);
}
err:
return retval;
}
/* sensor changes between scaling and subsampling
* go through exposure calcualtion
*/
static int ov5647_change_mode_exposure_calc(enum ov5647_frame_rate frame_rate,
enum ov5647_mode mode)
{
struct reg_value *pModeSetting = NULL;
s32 ArySize = 0;
int pre_shutter, pre_gain16;
int cap_shutter, cap_gain16;
int pre_sysclk, pre_HTS;
int cap_sysclk, cap_HTS, cap_VTS;
long cap_gain16_shutter;
int retval = 0;
/* check if the input mode and frame rate is valid */
pModeSetting =
ov5647_mode_info_data[frame_rate][mode].init_data_ptr;
ArySize =
ov5647_mode_info_data[frame_rate][mode].init_data_size;
ov5647_data.pix.width =
ov5647_mode_info_data[frame_rate][mode].width;
ov5647_data.pix.height =
ov5647_mode_info_data[frame_rate][mode].height;
if (ov5647_data.pix.width == 0 || ov5647_data.pix.height == 0 ||
pModeSetting == NULL || ArySize == 0)
return -EINVAL;
ov5647_stream_off();
/* turn off night mode for capture */
ov5647_set_night_mode();
pre_shutter = ov5647_get_shutter();
pre_gain16 = ov5647_get_gain16();
pre_HTS = ov5647_get_HTS();
pre_sysclk = ov5647_get_sysclk();
/* Write capture setting */
retval = ov5647_download_firmware(pModeSetting, ArySize);
if (retval < 0)
goto err;
/* read capture VTS */
cap_VTS = ov5647_get_VTS();
cap_HTS = ov5647_get_HTS();
cap_sysclk = ov5647_get_sysclk();
/* calculate capture shutter/gain16 */
cap_shutter = pre_shutter * cap_sysclk/pre_sysclk * pre_HTS / cap_HTS;
if (cap_shutter < 16) {
cap_gain16_shutter = pre_shutter * pre_gain16 *
cap_sysclk / pre_sysclk * pre_HTS / cap_HTS;
cap_shutter = ((int)(cap_gain16_shutter / 16));
if (cap_shutter < 1)
cap_shutter = 1;
cap_gain16 = ((int)(cap_gain16_shutter / cap_shutter));
if (cap_gain16 < 16)
cap_gain16 = 16;
} else
cap_gain16 = pre_gain16;
/* gain to shutter */
while ((cap_gain16 > 32) &&
(cap_shutter < ((int)((cap_VTS - 4) / 2)))) {
cap_gain16 = cap_gain16 / 2;
cap_shutter = cap_shutter * 2;
}
/* write capture gain */
ov5647_set_gain16(cap_gain16);
/* write capture shutter */
if (cap_shutter > (cap_VTS - 4)) {
cap_VTS = cap_shutter + 4;
ov5647_set_VTS(cap_VTS);
}
ov5647_set_shutter(cap_shutter);
err:
return retval;
}
/* if sensor changes inside scaling or subsampling
* change mode directly
* */
static int ov5647_change_mode_direct(enum ov5647_frame_rate frame_rate,
enum ov5647_mode mode)
{
struct reg_value *pModeSetting = NULL;
s32 ArySize = 0;
int retval = 0;
/* check if the input mode and frame rate is valid */
pModeSetting =
ov5647_mode_info_data[frame_rate][mode].init_data_ptr;
ArySize =
ov5647_mode_info_data[frame_rate][mode].init_data_size;
ov5647_data.pix.width =
ov5647_mode_info_data[frame_rate][mode].width;
ov5647_data.pix.height =
ov5647_mode_info_data[frame_rate][mode].height;
if (ov5647_data.pix.width == 0 || ov5647_data.pix.height == 0 ||
pModeSetting == NULL || ArySize == 0)
return -EINVAL;
/* turn off AE/AG */
ov5647_turn_on_AE_AG(0);
ov5647_stream_off();
/* Write capture setting */
retval = ov5647_download_firmware(pModeSetting, ArySize);
if (retval < 0)
goto err;
ov5647_turn_on_AE_AG(1);
err:
return retval;
}
static int ov5647_init_mode(enum ov5647_frame_rate frame_rate,
enum ov5647_mode mode, enum ov5647_mode orig_mode)
{
struct reg_value *pModeSetting = NULL;
s32 ArySize = 0;
int retval = 0;
u32 msec_wait4stable = 0;
enum ov5647_downsize_mode dn_mode, orig_dn_mode;
if ((mode > ov5647_mode_MAX || mode < ov5647_mode_MIN)
&& (mode != ov5647_mode_INIT)) {
pr_err("Wrong ov5647 mode detected!\n");
return -1;
}
dn_mode = ov5647_mode_info_data[frame_rate][mode].dn_mode;
orig_dn_mode = ov5647_mode_info_data[frame_rate][orig_mode].dn_mode;
if (mode == ov5647_mode_INIT) {
ov5647_soft_reset();
pModeSetting = ov5647_init_setting;
ArySize = ARRAY_SIZE(ov5647_init_setting);
retval = ov5647_download_firmware(pModeSetting, ArySize);
if (retval < 0)
goto err;
pModeSetting = ov5647_setting_60fps_VGA_640_480;
ArySize = ARRAY_SIZE(ov5647_setting_60fps_VGA_640_480);
retval = ov5647_download_firmware(pModeSetting, ArySize);
ov5647_data.pix.width = 640;
ov5647_data.pix.height = 480;
} else if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
(dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
/* change between subsampling and scaling
* go through exposure calucation */
retval = ov5647_change_mode_exposure_calc(frame_rate, mode);
} else {
/* change inside subsampling or scaling
* download firmware directly */
retval = ov5647_change_mode_direct(frame_rate, mode);
}
if (retval < 0)
goto err;
ov5647_set_AE_target(AE_Target);
ov5647_get_light_freq();
ov5647_set_bandingfilter();
ov5647_set_virtual_channel(ov5647_data.csi);
/* add delay to wait for sensor stable */
if (mode == ov5647_mode_QSXGA_2592_1944) {
/* dump the first two frames: 1/7.5*2
* the frame rate of QSXGA is 7.5fps */
msec_wait4stable = 267;
} else if (frame_rate == ov5647_15_fps) {
/* dump the first nine frames: 1/15*9 */
msec_wait4stable = 600;
} else if (frame_rate == ov5647_30_fps) {
/* dump the first nine frames: 1/30*9 */
msec_wait4stable = 300;
}
msleep(msec_wait4stable);
err:
return retval;
}
/*!
* ov5647_s_power - V4L2 sensor interface handler for VIDIOC_S_POWER ioctl
* @s: pointer to standard V4L2 device structure
* @on: indicates power mode (on or off)
*
* Turns the power on or off, depending on the value of on and returns the
* appropriate error code.
*/
static int ov5647_s_power(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5647 *sensor = to_ov5647(client);
if (on && !sensor->on) {
if (io_regulator)
if (regulator_enable(io_regulator) != 0)
return -EIO;
if (core_regulator)
if (regulator_enable(core_regulator) != 0)
return -EIO;
if (gpo_regulator)
if (regulator_enable(gpo_regulator) != 0)
return -EIO;
if (analog_regulator)
if (regulator_enable(analog_regulator) != 0)
return -EIO;
} else if (!on && sensor->on) {
if (analog_regulator)
regulator_disable(analog_regulator);
if (core_regulator)
regulator_disable(core_regulator);
if (io_regulator)
regulator_disable(io_regulator);
if (gpo_regulator)
regulator_disable(gpo_regulator);
}
sensor->on = on;
return 0;
}
/*!
* ov5647_g_parm - V4L2 sensor interface handler for VIDIOC_G_PARM ioctl
* @s: pointer to standard V4L2 sub device structure
* @a: pointer to standard V4L2 VIDIOC_G_PARM ioctl structure
*
* Returns the sensor's video CAPTURE parameters.
*/
static int ov5647_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *a)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5647 *sensor = to_ov5647(client);
struct v4l2_captureparm *cparm = &a->parm.capture;
int ret = 0;
switch (a->type) {
/* This is the only case currently handled. */
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
memset(a, 0, sizeof(*a));
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cparm->capability = sensor->streamcap.capability;
cparm->timeperframe = sensor->streamcap.timeperframe;
cparm->capturemode = sensor->streamcap.capturemode;
ret = 0;
break;
/* These are all the possible cases. */
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
ret = -EINVAL;
break;
default:
pr_debug(" type is unknown - %d\n", a->type);
ret = -EINVAL;
break;
}
return ret;
}
/*!
* ov5460_s_parm - V4L2 sensor interface handler for VIDIOC_S_PARM ioctl
* @s: pointer to standard V4L2 sub device structure
* @a: pointer to standard V4L2 VIDIOC_S_PARM ioctl structure
*
* Configures the sensor to use the input parameters, if possible. If
* not possible, reverts to the old parameters and returns the
* appropriate error code.
*/
static int ov5647_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *a)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5647 *sensor = to_ov5647(client);
struct v4l2_fract *timeperframe = &a->parm.capture.timeperframe;
u32 tgt_fps; /* target frames per secound */
enum ov5647_frame_rate frame_rate;
enum ov5647_mode orig_mode;
int ret = 0;
/* Make sure power on */
ov5647_power_down(0);
switch (a->type) {
/* This is the only case currently handled. */
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
/* Check that the new frame rate is allowed. */
if ((timeperframe->numerator == 0) ||
(timeperframe->denominator == 0)) {
timeperframe->denominator = DEFAULT_FPS;
timeperframe->numerator = 1;
}
tgt_fps = timeperframe->denominator /
timeperframe->numerator;
if (tgt_fps > MAX_FPS) {
timeperframe->denominator = MAX_FPS;
timeperframe->numerator = 1;
} else if (tgt_fps < MIN_FPS) {
timeperframe->denominator = MIN_FPS;
timeperframe->numerator = 1;
}
/* Actual frame rate we use */
tgt_fps = timeperframe->denominator /
timeperframe->numerator;
if (tgt_fps == 15)
frame_rate = ov5647_15_fps;
else if (tgt_fps == 30)
frame_rate = ov5647_30_fps;
else {
pr_err(" The camera frame rate is not supported!\n");
return -EINVAL;
}
orig_mode = sensor->streamcap.capturemode;
ret = ov5647_init_mode(frame_rate,
(u32)a->parm.capture.capturemode, orig_mode);
if (ret < 0)
return ret;
sensor->streamcap.timeperframe = *timeperframe;
sensor->streamcap.capturemode =
(u32)a->parm.capture.capturemode;
break;
/* These are all the possible cases. */
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
pr_debug("type is not " \
"V4L2_BUF_TYPE_VIDEO_CAPTURE but %d\n",
a->type);
ret = -EINVAL;
break;
default:
pr_debug("type is unknown - %d\n", a->type);
ret = -EINVAL;
break;
}
return ret;
}
static int ov5647_try_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
const struct ov5647_datafmt *fmt = ov5647_find_datafmt(mf->code);
if (!fmt) {
mf->code = ov5647_colour_fmts[0].code;
mf->colorspace = ov5647_colour_fmts[0].colorspace;
}
mf->field = V4L2_FIELD_NONE;
return 0;
}
static int ov5647_s_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5647 *sensor = to_ov5647(client);
/* MIPI CSI could have changed the format, double-check */
if (!ov5647_find_datafmt(mf->code))
return -EINVAL;
ov5647_try_fmt(sd, mf);
sensor->fmt = ov5647_find_datafmt(mf->code);
return 0;
}
static int ov5647_g_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov5647 *sensor = to_ov5647(client);
const struct ov5647_datafmt *fmt = sensor->fmt;
mf->code = fmt->code;
mf->colorspace = fmt->colorspace;
mf->field = V4L2_FIELD_NONE;
return 0;
}
static int ov5647_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
u32 *code)
{
if (index >= ARRAY_SIZE(ov5647_colour_fmts))
return -EINVAL;
*code = ov5647_colour_fmts[index].code;
return 0;
}
/*!
* ov5647_enum_framesizes - V4L2 sensor interface handler for
* VIDIOC_ENUM_FRAMESIZES ioctl
* @s: pointer to standard V4L2 device structure
* @fsize: standard V4L2 VIDIOC_ENUM_FRAMESIZES ioctl structure
*
* Return 0 if successful, otherwise -EINVAL.
*/
static int ov5647_enum_framesizes(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index > ov5647_mode_MAX)
return -EINVAL;
fse->max_width =
max(ov5647_mode_info_data[0][fse->index].width,
ov5647_mode_info_data[1][fse->index].width);
fse->min_width = fse->max_width;
fse->max_height =
max(ov5647_mode_info_data[0][fse->index].height,
ov5647_mode_info_data[1][fse->index].height);
fse->min_height = fse->max_height;
return 0;
}
/*!
* ov5647_enum_frameintervals - V4L2 sensor interface handler for
* VIDIOC_ENUM_FRAMEINTERVALS ioctl
* @s: pointer to standard V4L2 device structure
* @fival: standard V4L2 VIDIOC_ENUM_FRAMEINTERVALS ioctl structure
*
* Return 0 if successful, otherwise -EINVAL.
*/
static int ov5647_enum_frameintervals(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_interval_enum *fie)
{
int i, j, count;
if (fie->index < 0 || fie->index > ov5647_mode_MAX)
return -EINVAL;
if (fie->width == 0 || fie->height == 0 ||
fie->code == 0) {
pr_warning("Please assign pixel format, width and height.\n");
return -EINVAL;
}
fie->interval.numerator = 1;
count = 0;
for (i = 0; i < ARRAY_SIZE(ov5647_mode_info_data); i++) {
for (j = 0; j < (ov5647_mode_MAX + 1); j++) {
if (fie->width == ov5647_mode_info_data[i][j].width
&& fie->height == ov5647_mode_info_data[i][j].height
&& ov5647_mode_info_data[i][j].init_data_ptr != NULL) {
count++;
}
if (fie->index == (count - 1)) {
fie->interval.denominator =
ov5647_framerates[i];
return 0;
}
}
}
return -EINVAL;
}
/*!
* dev_init - V4L2 sensor init
* @s: pointer to standard V4L2 device structure
*
*/
static int init_device(void)
{
u32 tgt_xclk; /* target xclk */
u32 tgt_fps; /* target frames per secound */
enum ov5647_frame_rate frame_rate;
int ret;
ov5647_data.on = true;
/* mclk */
tgt_xclk = ov5647_data.mclk;
tgt_xclk = min(tgt_xclk, (u32)OV5647_XCLK_MAX);
tgt_xclk = max(tgt_xclk, (u32)OV5647_XCLK_MIN);
ov5647_data.mclk = tgt_xclk;
pr_debug(" Setting mclk to %d MHz\n", tgt_xclk / 1000000);
/* Default camera frame rate is set in probe */
tgt_fps = ov5647_data.streamcap.timeperframe.denominator /
ov5647_data.streamcap.timeperframe.numerator;
if (tgt_fps == 15)
frame_rate = ov5647_15_fps;
else if (tgt_fps == 30)
frame_rate = ov5647_30_fps;
else
return -EINVAL; /* Only support 15fps or 30fps now. */
ret = ov5647_init_mode(frame_rate, ov5647_mode_INIT, ov5647_mode_INIT);
ov5647_update_otp();
return ret;
}
static int ov5647_s_stream(struct v4l2_subdev *sd, int enable)
{
if (enable)
ov5647_stream_on();
else
ov5647_stream_off();
return 0;
}
static struct v4l2_subdev_video_ops ov5647_subdev_video_ops = {
.g_parm = ov5647_g_parm,
.s_parm = ov5647_s_parm,
.s_stream = ov5647_s_stream,
.s_mbus_fmt = ov5647_s_fmt,
.g_mbus_fmt = ov5647_g_fmt,
.try_mbus_fmt = ov5647_try_fmt,
.enum_mbus_fmt = ov5647_enum_fmt,
};
static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = {
.enum_frame_size = ov5647_enum_framesizes,
.enum_frame_interval = ov5647_enum_frameintervals,
};
static struct v4l2_subdev_core_ops ov5647_subdev_core_ops = {
.s_power = ov5647_s_power,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ov5647_get_register,
.s_register = ov5647_set_register,
#endif
};
static struct v4l2_subdev_ops ov5647_subdev_ops = {
.core = &ov5647_subdev_core_ops,
.video = &ov5647_subdev_video_ops,
.pad = &ov5647_subdev_pad_ops,
};
/*!
* ov5647 I2C probe function
*
* @param adapter struct i2c_adapter *
* @return Error code indicating success or failure
*/
static int ov5647_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pinctrl *pinctrl;
struct device *dev = &client->dev;
int retval;
u8 chip_id_high, chip_id_low;
/* ov5647 pinctrl */
pinctrl = devm_pinctrl_get_select_default(dev);
if (IS_ERR(pinctrl)) {
dev_warn(dev, "no pin available\n");
}
/* request power down pin */
pwn_gpio = of_get_named_gpio(dev->of_node, "pwn-gpios", 0);
if (!gpio_is_valid(pwn_gpio)) {
dev_warn(dev, "no sensor pwdn pin available\n");
pwn_gpio = -1;
} else {
retval = devm_gpio_request_one(dev, pwn_gpio, GPIOF_OUT_INIT_HIGH,
"ov5647_mipi_pwdn");
if (retval < 0) {
dev_warn(dev, "Failed to set power pin\n");
return retval;
}
}
/* request reset pin */
rst_gpio = of_get_named_gpio(dev->of_node, "rst-gpios", 0);
if (!gpio_is_valid(rst_gpio)) {
dev_warn(dev, "no sensor reset pin available\n");
rst_gpio = -1;
} else {
retval = devm_gpio_request_one(dev, rst_gpio, GPIOF_OUT_INIT_HIGH,
"ov5647_mipi_reset");
if (retval < 0) {
dev_warn(dev, "Failed to set reset pin\n");
return retval;
}
}
/* Set initial values for the sensor struct. */
memset(&ov5647_data, 0, sizeof(ov5647_data));
ov5647_data.sensor_clk = devm_clk_get(dev, "csi_mclk");
if (IS_ERR(ov5647_data.sensor_clk)) {
/* assuming clock enabled by default */
ov5647_data.sensor_clk = NULL;
dev_err(dev, "clock-frequency missing or invalid\n");
return PTR_ERR(ov5647_data.sensor_clk);
}
retval = of_property_read_u32(dev->of_node, "mclk",
&(ov5647_data.mclk));
if (retval) {
dev_err(dev, "mclk missing or invalid\n");
return retval;
}
retval = of_property_read_u32(dev->of_node, "mclk_source",
(u32 *) &(ov5647_data.mclk_source));
if (retval) {
dev_err(dev, "mclk_source missing or invalid\n");
return retval;
}
retval = of_property_read_u32(dev->of_node, "csi_id",
&(ov5647_data.csi));
if (retval) {
dev_err(dev, "csi id missing or invalid\n");
return retval;
}
clk_prepare_enable(ov5647_data.sensor_clk);
ov5647_data.io_init = ov5647_reset;
ov5647_data.i2c_client = client;
ov5647_data.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
ov5647_data.pix.width = 640;
ov5647_data.pix.height = 480;
ov5647_data.streamcap.capability = V4L2_MODE_HIGHQUALITY |
V4L2_CAP_TIMEPERFRAME;
ov5647_data.streamcap.capturemode = 0;
ov5647_data.streamcap.timeperframe.denominator = DEFAULT_FPS;
ov5647_data.streamcap.timeperframe.numerator = 1;
ov5647_regulator_enable(&client->dev);
ov5647_reset();
ov5647_power_down(0);
retval = ov5647_read_reg(OV5647_CHIP_ID_HIGH_BYTE, &chip_id_high);
if (retval < 0 || chip_id_high != 0x56) {
pr_warning("camera ov5647_mipi is not found\n");
clk_disable_unprepare(ov5647_data.sensor_clk);
return -ENODEV;
}
retval = ov5647_read_reg(OV5647_CHIP_ID_LOW_BYTE, &chip_id_low);
if (retval < 0 || chip_id_low != 0x47) {
pr_warning("camera ov5647_mipi is not found\n");
clk_disable_unprepare(ov5647_data.sensor_clk);
return -ENODEV;
}
retval = init_device();
if (retval < 0) {
clk_disable_unprepare(ov5647_data.sensor_clk);
pr_warning("camera ov5647 init failed\n");
ov5647_power_down(1);
return retval;
}
v4l2_i2c_subdev_init(&ov5647_data.subdev, client, &ov5647_subdev_ops);
ov5647_data.subdev.grp_id = 678;
retval = v4l2_async_register_subdev(&ov5647_data.subdev);
if (retval < 0)
dev_err(&client->dev,
"%s--Async register failed, ret=%d\n", __func__, retval);
ov5647_stream_off();
pr_info("camera ov5647_mipi is found\n");
return retval;
}
/*!
* ov5647 I2C detach function
*
* @param client struct i2c_client *
* @return Error code indicating success or failure
*/
static int ov5647_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_async_unregister_subdev(sd);
clk_disable_unprepare(ov5647_data.sensor_clk);
ov5647_power_down(1);
if (gpo_regulator)
regulator_disable(gpo_regulator);
if (analog_regulator)
regulator_disable(analog_regulator);
if (core_regulator)
regulator_disable(core_regulator);
if (io_regulator)
regulator_disable(io_regulator);
return 0;
}
module_i2c_driver(ov5647_i2c_driver);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("OV5647 MIPI Camera Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION("1.0");
MODULE_ALIAS("CSI");