diff options
Diffstat (limited to 'drivers/media/platform/mxc/capture/ov5647_mipi.c')
| -rw-r--r-- | drivers/media/platform/mxc/capture/ov5647_mipi.c | 1721 |
1 files changed, 1721 insertions, 0 deletions
diff --git a/drivers/media/platform/mxc/capture/ov5647_mipi.c b/drivers/media/platform/mxc/capture/ov5647_mipi.c new file mode 100644 index 000000000000..109f77438f51 --- /dev/null +++ b/drivers/media/platform/mxc/capture/ov5647_mipi.c @@ -0,0 +1,1721 @@ +/* + * 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, ¤t_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_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *mf = &format->format; + const struct ov5647_datafmt *fmt = ov5647_find_datafmt(mf->code); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5647 *sensor = to_ov5647(client); + + if (!fmt) { + mf->code = ov5647_colour_fmts[0].code; + mf->colorspace = ov5647_colour_fmts[0].colorspace; + } + + mf->field = V4L2_FIELD_NONE; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + return 0; + + sensor->fmt = fmt; + + return 0; +} + +static int ov5647_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *mf = &format->format; + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5647 *sensor = to_ov5647(client); + const struct ov5647_datafmt *fmt = sensor->fmt; + + if (format->pad) + return -EINVAL; + + mf->code = fmt->code; + mf->colorspace = fmt->colorspace; + mf->field = V4L2_FIELD_NONE; + + return 0; +} + +static int ov5647_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->pad || code->index >= ARRAY_SIZE(ov5647_colour_fmts)) + return -EINVAL; + + code->code = ov5647_colour_fmts[code->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, +}; + +static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = { + .enum_frame_size = ov5647_enum_framesizes, + .enum_frame_interval = ov5647_enum_frameintervals, + .enum_mbus_code = ov5647_enum_mbus_code, + .set_fmt = ov5647_set_fmt, + .get_fmt = ov5647_get_fmt, +}; + +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"); |