diff options
Diffstat (limited to 'drivers/media/platform/imx8/ov5640_v3.c')
| -rw-r--r-- | drivers/media/platform/imx8/ov5640_v3.c | 1409 |
1 files changed, 1409 insertions, 0 deletions
diff --git a/drivers/media/platform/imx8/ov5640_v3.c b/drivers/media/platform/imx8/ov5640_v3.c new file mode 100644 index 000000000000..69145bce3d6d --- /dev/null +++ b/drivers/media/platform/imx8/ov5640_v3.c @@ -0,0 +1,1409 @@ +/* + * Copyright (C) 2012-2015 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2018 NXP + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/of_device.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 OV5640_VOLTAGE_ANALOG 2800000 +#define OV5640_VOLTAGE_DIGITAL_CORE 1500000 +#define OV5640_VOLTAGE_DIGITAL_IO 1800000 + +#define MIN_FPS 15 +#define MAX_FPS 30 +#define DEFAULT_FPS 30 + +#define OV5640_XCLK_MIN 6000000 +#define OV5640_XCLK_MAX 24000000 + +#define OV5640_CHIP_ID_HIGH_BYTE 0x300A +#define OV5640_CHIP_ID_LOW_BYTE 0x300B + +#define OV5640_SENS_PAD_SOURCE 0 +#define OV5640_SENS_PADS_NUM 1 + +enum ov5640_mode { + ov5640_mode_MIN = 0, + ov5640_mode_VGA_640_480 = 0, + ov5640_mode_QVGA_320_240 = 1, + ov5640_mode_480_272 = 2, + ov5640_mode_720P_1280_720 = 3, + ov5640_mode_1080P_1920_1080 = 4, + ov5640_mode_MAX = 4 +}; + +enum ov5640_frame_rate { + ov5640_15_fps, + ov5640_30_fps +}; + +static int ov5640_framerates[] = { + [ov5640_15_fps] = 15, + [ov5640_30_fps] = 30, +}; + +struct ov5640_datafmt { + u32 code; + enum v4l2_colorspace colorspace; +}; + +struct reg_value { + u16 u16RegAddr; + u8 u8Val; + u8 u8Mask; + u32 u32Delay_ms; +}; + +struct ov5640_mode_info { + enum ov5640_mode mode; + u32 width; + u32 height; + struct reg_value *init_data_ptr; + u32 init_data_size; +}; + +struct ov5640_pll_info { + enum ov5640_mode mode; + struct reg_value *init_data_ptr; + u32 init_data_size; +}; + +struct ov5640_hs_info { + u32 width; + u32 height; + u32 frame_rate; + u32 val; +}; + +struct ov5640 { + struct v4l2_subdev subdev; + struct i2c_client *i2c_client; + struct v4l2_pix_format pix; + const struct ov5640_datafmt *fmt; + struct v4l2_captureparm streamcap; + struct media_pad pads[OV5640_SENS_PADS_NUM]; + 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 ov5640 ov5640_data; +static int pwn_gpio, rst_gpio; + +static struct reg_value ov5640_init_parm[] = { + {0x3008, 0x42, 0, 0}, + + /* System setting.0*/ + {0x3103, 0x03, 0, 0}, + {0x3000, 0x00, 0, 0}, + {0x3004, 0xff, 0, 0}, + {0x3002, 0x1c, 0, 0}, + {0x3006, 0xc3, 0, 0}, + {0x302e, 0x08, 0, 0}, + {0x3037, 0x13, 0, 0}, + {0x3108, 0x01, 0, 0}, + {0x3618, 0x00, 0, 0}, + {0x3612, 0x29, 0, 0}, + {0x3708, 0x64, 0, 0}, + {0x3709, 0x52, 0, 0}, + {0x370c, 0x03, 0, 0}, + {0x3820, 0x41, 0, 0}, + {0x3821, 0x07, 0, 0}, + {0x3630, 0x36, 0, 0}, + {0x3631, 0x0e, 0, 0}, + {0x3632, 0xe2, 0, 0}, + {0x3633, 0x12, 0, 0}, + {0x3621, 0xe0, 0, 0}, + {0x3704, 0xa0, 0, 0}, + {0x3703, 0x5a, 0, 0}, + {0x3715, 0x78, 0, 0}, + {0x3717, 0x01, 0, 0}, + {0x370b, 0x60, 0, 0}, + {0x3705, 0x1a, 0, 0}, + {0x3905, 0x02, 0, 0}, + {0x3906, 0x10, 0, 0}, + {0x3901, 0x0a, 0, 0}, + {0x3731, 0x12, 0, 0}, + {0x3600, 0x08, 0, 0}, + {0x3601, 0x33, 0, 0}, + {0x302d, 0x60, 0, 0}, + {0x3620, 0x52, 0, 0}, + {0x371b, 0x20, 0, 0}, + {0x471c, 0x50, 0, 0}, + {0x3a13, 0x43, 0, 0}, + {0x3a18, 0x00, 0, 0}, + {0x3a19, 0x7c, 0, 0}, + {0x3635, 0x13, 0, 0}, + {0x3636, 0x03, 0, 0}, + {0x3634, 0x40, 0, 0}, + {0x3622, 0x01, 0, 0}, + {0x3c01, 0x00, 0, 0}, + {0x3a00, 0x58, 0, 0}, + {0x4001, 0x02, 0, 0}, + {0x4004, 0x02, 0, 0}, + {0x4005, 0x1a, 0, 0}, + {0x5001, 0xa3, 0, 0}, + + /* AEC */ + {0x3a0f, 0x30, 0, 0}, + {0x3a10, 0x28, 0, 0}, + {0x3a1b, 0x30, 0, 0}, + {0x3a1e, 0x26, 0, 0}, + {0x3a11, 0x60, 0, 0}, + {0x3a1f, 0x14, 0, 0}, + + /* AWB */ + {0x5180, 0xff, 0, 0}, + {0x5181, 0xf2, 0, 0}, + {0x5182, 0x00, 0, 0}, + {0x5183, 0x14, 0, 0}, + {0x5184, 0x25, 0, 0}, + {0x5185, 0x24, 0, 0}, + {0x5186, 0x09, 0, 0}, + {0x5187, 0x09, 0, 0}, + {0x5188, 0x09, 0, 0}, + {0x5189, 0x88, 0, 0}, + {0x518a, 0x54, 0, 0}, + {0x518b, 0xee, 0, 0}, + {0x518c, 0xb2, 0, 0}, + {0x518d, 0x50, 0, 0}, + {0x518e, 0x34, 0, 0}, + {0x518f, 0x6b, 0, 0}, + {0x5190, 0x46, 0, 0}, + {0x5191, 0xf8, 0, 0}, + {0x5192, 0x04, 0, 0}, + {0x5193, 0x70, 0, 0}, + {0x5194, 0xf0, 0, 0}, + {0x5195, 0xf0, 0, 0}, + {0x5196, 0x03, 0, 0}, + {0x5197, 0x01, 0, 0}, + {0x5198, 0x04, 0, 0}, + {0x5199, 0x6c, 0, 0}, + {0x519a, 0x04, 0, 0}, + {0x519b, 0x00, 0, 0}, + {0x519c, 0x09, 0, 0}, + {0x519d, 0x2b, 0, 0}, + {0x519e, 0x38, 0, 0}, + + /* Color Matrix */ + {0x5381, 0x1e, 0, 0}, + {0x5382, 0x5b, 0, 0}, + {0x5383, 0x08, 0, 0}, + {0x5384, 0x0a, 0, 0}, + {0x5385, 0x7e, 0, 0}, + {0x5386, 0x88, 0, 0}, + {0x5387, 0x7c, 0, 0}, + {0x5388, 0x6c, 0, 0}, + {0x5389, 0x10, 0, 0}, + {0x538a, 0x01, 0, 0}, + {0x538b, 0x98, 0, 0}, + + /* sharp */ + {0x5300, 0x08, 0, 0}, + {0x5301, 0x30, 0, 0}, + {0x5302, 0x10, 0, 0}, + {0x5303, 0x00, 0, 0}, + {0x5304, 0x08, 0, 0}, + {0x5305, 0x30, 0, 0}, + {0x5306, 0x08, 0, 0}, + {0x5307, 0x16, 0, 0}, + {0x5309, 0x08, 0, 0}, + {0x530a, 0x30, 0, 0}, + {0x530b, 0x04, 0, 0}, + {0x530c, 0x06, 0, 0}, + + /* Gamma */ + {0x5480, 0x01, 0, 0}, + {0x5481, 0x08, 0, 0}, + {0x5482, 0x14, 0, 0}, + {0x5483, 0x28, 0, 0}, + {0x5484, 0x51, 0, 0}, + {0x5485, 0x65, 0, 0}, + {0x5486, 0x71, 0, 0}, + {0x5487, 0x7d, 0, 0}, + {0x5488, 0x87, 0, 0}, + {0x5489, 0x91, 0, 0}, + {0x548a, 0x9a, 0, 0}, + {0x548b, 0xaa, 0, 0}, + {0x548c, 0xb8, 0, 0}, + {0x548d, 0xcd, 0, 0}, + {0x548e, 0xdd, 0, 0}, + {0x548f, 0xea, 0, 0}, + {0x5490, 0x1d, 0, 0}, + + /* UV adjust. */ + {0x5580, 0x02, 0, 0}, + {0x5583, 0x40, 0, 0}, + {0x5584, 0x10, 0, 0}, + {0x5589, 0x10, 0, 0}, + {0x558a, 0x00, 0, 0}, + {0x558b, 0xf8, 0, 0}, + + /* Lens correction0 */ + {0x5800, 0x23, 0, 0}, + {0x5801, 0x14, 0, 0}, + {0x5802, 0x0f, 0, 0}, + {0x5803, 0x0f, 0, 0}, + {0x5804, 0x12, 0, 0}, + {0x5805, 0x26, 0, 0}, + {0x5806, 0x0c, 0, 0}, + {0x5807, 0x08, 0, 0}, + {0x5808, 0x05, 0, 0}, + {0x5809, 0x05, 0, 0}, + {0x580a, 0x08, 0, 0}, + {0x580b, 0x0d, 0, 0}, + {0x580c, 0x08, 0, 0}, + {0x580d, 0x03, 0, 0}, + {0x580e, 0x00, 0, 0}, + {0x580f, 0x00, 0, 0}, + {0x5810, 0x03, 0, 0}, + {0x5811, 0x09, 0, 0}, + {0x5812, 0x07, 0, 0}, + {0x5813, 0x03, 0, 0}, + {0x5814, 0x00, 0, 0}, + {0x5815, 0x01, 0, 0}, + {0x5816, 0x03, 0, 0}, + {0x5817, 0x08, 0, 0}, + {0x5818, 0x0d, 0, 0}, + {0x5819, 0x08, 0, 0}, + {0x581a, 0x05, 0, 0}, + {0x581b, 0x06, 0, 0}, + {0x581c, 0x08, 0, 0}, + {0x581d, 0x0e, 0, 0}, + {0x581e, 0x29, 0, 0}, + {0x581f, 0x17, 0, 0}, + {0x5820, 0x11, 0, 0}, + {0x5821, 0x11, 0, 0}, + {0x5822, 0x15, 0, 0}, + {0x5823, 0x28, 0, 0}, + {0x5824, 0x46, 0, 0}, + {0x5825, 0x26, 0, 0}, + {0x5826, 0x08, 0, 0}, + {0x5827, 0x26, 0, 0}, + {0x5828, 0x64, 0, 0}, + {0x5829, 0x26, 0, 0}, + {0x582a, 0x24, 0, 0}, + {0x582b, 0x22, 0, 0}, + {0x582c, 0x24, 0, 0}, + {0x582d, 0x24, 0, 0}, + {0x582e, 0x06, 0, 0}, + {0x582f, 0x22, 0, 0}, + {0x5830, 0x40, 0, 0}, + {0x5831, 0x42, 0, 0}, + {0x5832, 0x24, 0, 0}, + {0x5833, 0x26, 0, 0}, + {0x5834, 0x24, 0, 0}, + {0x5835, 0x22, 0, 0}, + {0x5836, 0x22, 0, 0}, + {0x5837, 0x26, 0, 0}, + {0x5838, 0x44, 0, 0}, + {0x5839, 0x24, 0, 0}, + {0x583a, 0x26, 0, 0}, + {0x583b, 0x28, 0, 0}, + {0x583c, 0x42, 0, 0}, + {0x583d, 0xce, 0, 0}, +}; + +static struct reg_value ov5640_setting_VGA_640_480[] = { + {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0}, {0x3802, 0x00, 0, 0}, + {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0}, {0x3805, 0x3f, 0, 0}, + {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0}, {0x3808, 0x02, 0, 0}, + {0x3809, 0x80, 0, 0}, {0x380a, 0x01, 0, 0}, {0x380b, 0xe0, 0, 0}, + {0x380c, 0x07, 0, 0}, {0x380d, 0x68, 0, 0}, {0x380e, 0x03, 0, 0}, + {0x380f, 0xd8, 0, 0}, {0x3810, 0x00, 0, 0}, {0x3811, 0x10, 0, 0}, + {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0}, {0x3814, 0x31, 0, 0}, + {0x3815, 0x31, 0, 0}, +}; + +static struct reg_value ov5640_setting_QVGA_320_240[] = { + {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0}, {0x3802, 0x00, 0, 0}, + {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0}, {0x3805, 0x3f, 0, 0}, + {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0}, {0x3808, 0x01, 0, 0}, + {0x3809, 0x40, 0, 0}, {0x380a, 0x00, 0, 0}, {0x380b, 0xf0, 0, 0}, + {0x380c, 0x07, 0, 0}, {0x380d, 0x68, 0, 0}, {0x380e, 0x03, 0, 0}, + {0x380f, 0xd8, 0, 0}, {0x3810, 0x00, 0, 0}, {0x3811, 0x10, 0, 0}, + {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0}, {0x3814, 0x31, 0, 0}, + {0x3815, 0x31, 0, 0}, +}; + +static struct reg_value ov5640_setting_480_272[] = { + {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0}, {0x3802, 0x00, 0, 0}, + {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0}, {0x3805, 0x3f, 0, 0}, + {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0}, {0x3808, 0x01, 0, 0}, + {0x3809, 0xE0, 0, 0}, {0x380a, 0x01, 0, 0}, {0x380b, 0x10, 0, 0}, + {0x380c, 0x07, 0, 0}, {0x380d, 0x64, 0, 0}, {0x380e, 0x02, 0, 0}, + {0x380f, 0xe4, 0, 0}, {0x3810, 0x00, 0, 0}, {0x3811, 0x10, 0, 0}, + {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0}, {0x3814, 0x31, 0, 0}, + {0x3815, 0x31, 0, 0}, +}; + +static struct reg_value ov5640_setting_720P_1280_720[] = { + {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0}, {0x3802, 0x00, 0, 0}, + {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0}, {0x3805, 0x3f, 0, 0}, + {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0}, {0x3808, 0x05, 0, 0}, + {0x3809, 0x00, 0, 0}, {0x380a, 0x02, 0, 0}, {0x380b, 0xd0, 0, 0}, + {0x380c, 0x07, 0, 0}, {0x380d, 0x64, 0, 0}, {0x380e, 0x02, 0, 0}, + {0x380f, 0xe4, 0, 0}, {0x3810, 0x00, 0, 0}, {0x3811, 0x10, 0, 0}, + {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0}, {0x3814, 0x31, 0, 0}, + {0x3815, 0x31, 0, 0}, +}; + +static struct reg_value ov5640_setting_1080P_1920_1080[] = { + {0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0}, + {0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0}, + {0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0}, {0x3808, 0x07, 0, 0}, + {0x3809, 0x80, 0, 0}, {0x380a, 0x04, 0, 0}, {0x380b, 0x38, 0, 0}, + {0x380c, 0x09, 0, 0}, {0x380d, 0xc4, 0, 0}, {0x380e, 0x04, 0, 0}, + {0x380f, 0x60, 0, 0}, {0x3810, 0x00, 0, 0}, {0x3811, 0x10, 0, 0}, + {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0}, {0x3814, 0x11, 0, 0}, + {0x3815, 0x11, 0, 0}, +}; + +/* DVP */ +static struct reg_value ov5640_pll_VGA_30fps_640_480[] = { + {0x3035, 0x11, 0, 0}, {0x3036, 0x46, 0, 0}, {0x460c, 0x22, 0, 0}, + {0x3824, 0x02, 0, 0}, {0x4837, 0x22, 0, 0}, +}; + +static struct reg_value ov5640_pll_VGA_15fps_640_480[] = { + {0x3035, 0x21, 0, 0}, {0x3036, 0x46, 0, 0}, {0x460c, 0x22, 0, 0}, + {0x3824, 0x02, 0, 0}, {0x4837, 0x22, 0, 0}, +}; + +static struct reg_value ov5640_pll_QVGA_30fps_320_240[] = { + {0x3035, 0x11, 0, 0}, {0x3036, 0x46, 0, 0}, {0x460c, 0x22, 0, 0}, + {0x3824, 0x02, 0, 0}, {0x4837, 0x22, 0, 0}, +}; + +static struct reg_value ov5640_pll_QVGA_15fps_320_240[] = { + {0x3035, 0x21, 0, 0}, {0x3036, 0x46, 0, 0}, {0x460c, 0x22, 0, 0}, + {0x3824, 0x02, 0, 0}, {0x4837, 0x22, 0, 0}, +}; + +static struct reg_value ov5640_pll_30fps_480_272[] = { + {0x3035, 0x21, 0, 0}, {0x3036, 0x69, 0, 0}, {0x460c, 0x20, 0, 0}, + {0x3824, 0x04, 0, 0}, {0x4837, 0x16, 0, 0}, +}; + +static struct reg_value ov5640_pll_15fps_480_272[] = { + {0x3035, 0x41, 0, 0}, {0x3036, 0x69, 0, 0}, {0x460c, 0x20, 0, 0}, + {0x3824, 0x04, 0, 0}, {0x4837, 0x16, 0, 0}, +}; + +static struct reg_value ov5640_pll_720P_30fps_1280_720[] = { + {0x3035, 0x21, 0, 0}, {0x3036, 0x69, 0, 0}, {0x460c, 0x20, 0, 0}, + {0x3824, 0x04, 0, 0}, {0x4837, 0x16, 0, 0}, +}; + +static struct reg_value ov5640_pll_720P_15fps_1280_720[] = { + {0x3035, 0x41, 0, 0}, {0x3036, 0x69, 0, 0}, {0x460c, 0x20, 0, 0}, + {0x3824, 0x04, 0, 0}, {0x4837, 0x16, 0, 0}, +}; + +static struct reg_value ov5640_pll_1080P_15fps_1920_1080[] = { + {0x3035, 0x21, 0, 0}, {0x3036, 0x69, 0, 0}, {0x460c, 0x20, 0, 0}, + {0x3824, 0x04, 0, 0}, {0x4837, 0x16, 0, 0}, +}; + +static struct reg_value ov5640_config[] = { + {0x302C, 0xc2, 0, 0}, /* Driver Capability */ + + {0x4300, 0x31, 0, 0}, /* YUV422 YVYU */ + {0x501f, 0x00, 0, 0}, /* YUV422 YVYU */ + + {0x3034, 0x1a, 0, 0}, /* Inerface 10bits mode */ + {0x3017, 0xFF, 0, 0}, + {0x3018, 0xFF, 0, 0}, + + {0x300e, 0x58, 0, 0}, /* DVP mode */ + {0x4740, 0x23, 0, 0}, /* BIT5: Pixel BIT1: HSYNC BIT0: VSYNC + 1: hight level + 0: low level valid*/ + {0x5000, 0xa7, 0, 0}, +}; + +static struct ov5640_mode_info ov5640_mode_info_data[ov5640_mode_MAX + 1] = { + {ov5640_mode_VGA_640_480, 640, 480, ov5640_setting_VGA_640_480, + ARRAY_SIZE(ov5640_setting_VGA_640_480)}, + + {ov5640_mode_QVGA_320_240, 320, 240, ov5640_setting_QVGA_320_240, + ARRAY_SIZE(ov5640_setting_QVGA_320_240)}, + + {ov5640_mode_480_272, 480, 272, ov5640_setting_480_272, + ARRAY_SIZE(ov5640_setting_480_272)}, + + {ov5640_mode_720P_1280_720, 1280, 720, ov5640_setting_720P_1280_720, + ARRAY_SIZE(ov5640_setting_720P_1280_720)}, + + {ov5640_mode_1080P_1920_1080, 1920, 1080, ov5640_setting_1080P_1920_1080, + ARRAY_SIZE(ov5640_setting_1080P_1920_1080)}, +}; + +static struct ov5640_pll_info ov5640_pll_info_data[2][ov5640_mode_MAX + 1] = { + { + {ov5640_mode_VGA_640_480, ov5640_pll_VGA_15fps_640_480, + ARRAY_SIZE(ov5640_pll_VGA_15fps_640_480)}, + + {ov5640_mode_QVGA_320_240, ov5640_pll_QVGA_15fps_320_240, + ARRAY_SIZE(ov5640_pll_QVGA_15fps_320_240)}, + + {ov5640_mode_480_272, ov5640_pll_15fps_480_272, + ARRAY_SIZE(ov5640_pll_15fps_480_272)}, + + {ov5640_mode_720P_1280_720, ov5640_pll_720P_15fps_1280_720, + ARRAY_SIZE(ov5640_pll_720P_15fps_1280_720)}, + + {ov5640_mode_1080P_1920_1080, ov5640_pll_1080P_15fps_1920_1080, + ARRAY_SIZE(ov5640_pll_1080P_15fps_1920_1080)}, + }, + + { + {ov5640_mode_VGA_640_480, ov5640_pll_VGA_30fps_640_480, + ARRAY_SIZE(ov5640_pll_VGA_30fps_640_480)}, + + {ov5640_mode_QVGA_320_240, ov5640_pll_QVGA_30fps_320_240, + ARRAY_SIZE(ov5640_pll_QVGA_30fps_320_240)}, + + {ov5640_mode_480_272, ov5640_pll_30fps_480_272, + ARRAY_SIZE(ov5640_pll_30fps_480_272)}, + + {ov5640_mode_720P_1280_720, ov5640_pll_720P_30fps_1280_720, + ARRAY_SIZE(ov5640_pll_720P_30fps_1280_720)}, + }, +}; + +static struct regulator *io_regulator; +static struct regulator *core_regulator; +static struct regulator *analog_regulator; + +static int ov5640_probe(struct i2c_client *adapter, + const struct i2c_device_id *device_id); +static int ov5640_remove(struct i2c_client *client); + +static s32 ov5640_read_reg(u16 reg, u8 *val); +static s32 ov5640_write_reg(u16 reg, u8 val); + +static const struct i2c_device_id ov5640_id[] = { + {"ov5640_v3", 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, ov5640_id); + +static struct i2c_driver ov5640_i2c_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "ov5640_v3", + }, + .probe = ov5640_probe, + .remove = ov5640_remove, + .id_table = ov5640_id, +}; + +static const struct ov5640_datafmt ov5640_colour_fmts[] = { + {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG}, + {MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG}, +}; + +static struct ov5640 *to_ov5640(const struct i2c_client *client) +{ + return container_of(i2c_get_clientdata(client), struct ov5640, subdev); +} + +/* Find a data format by a pixel code in an array */ +static const struct ov5640_datafmt + *ov5640_find_datafmt(u32 code) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ov5640_colour_fmts); i++) + if (ov5640_colour_fmts[i].code == code) + return ov5640_colour_fmts + i; + + return NULL; +} + +static inline void ov5640_power_down(int enable) +{ + gpio_set_value_cansleep(pwn_gpio, enable); + + msleep(2); +} + +static inline void ov5640_reset(void) +{ + gpio_set_value_cansleep(pwn_gpio, 1); + gpio_set_value_cansleep(rst_gpio, 0); + msleep(5); + + gpio_set_value_cansleep(pwn_gpio, 0); + msleep(1); + + gpio_set_value_cansleep(rst_gpio, 1); + msleep(20); +} + +static int ov5640_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, + OV5640_VOLTAGE_DIGITAL_IO, + OV5640_VOLTAGE_DIGITAL_IO); + ret = regulator_enable(io_regulator); + if (ret) { + dev_err(dev, "set io voltage failed\n"); + return ret; + } else { + dev_dbg(dev, "set io voltage ok\n"); + } + } else { + io_regulator = NULL; + dev_warn(dev, "cannot get io voltage\n"); + } + + core_regulator = devm_regulator_get(dev, "DVDD"); + if (!IS_ERR(core_regulator)) { + regulator_set_voltage(core_regulator, + OV5640_VOLTAGE_DIGITAL_CORE, + OV5640_VOLTAGE_DIGITAL_CORE); + ret = regulator_enable(core_regulator); + if (ret) { + dev_err(dev, "set core voltage failed\n"); + return ret; + } else { + dev_dbg(dev, "set core voltage ok\n"); + } + } else { + core_regulator = NULL; + dev_warn(dev, "cannot get core voltage\n"); + } + + analog_regulator = devm_regulator_get(dev, "AVDD"); + if (!IS_ERR(analog_regulator)) { + regulator_set_voltage(analog_regulator, + OV5640_VOLTAGE_ANALOG, + OV5640_VOLTAGE_ANALOG); + ret = regulator_enable(analog_regulator); + if (ret) { + dev_err(dev, "set analog voltage failed\n"); + return ret; + } else { + dev_dbg(dev, "set analog voltage ok\n"); + } + } else { + analog_regulator = NULL; + dev_warn(dev, "cannot get analog voltage\n"); + } + + return ret; +} + +static s32 ov5640_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(ov5640_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 ov5640_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(ov5640_data.i2c_client, au8RegBuf, 2)) { + pr_err("%s:write reg error:reg=%x\n", + __func__, reg); + return -1; + } + + if (1 != i2c_master_recv(ov5640_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; +} + +static int ov5640_set_clk_rate(void) +{ + u32 tgt_xclk; /* target xclk */ + int ret; + + /* mclk */ + tgt_xclk = ov5640_data.mclk; + tgt_xclk = min(tgt_xclk, (u32)OV5640_XCLK_MAX); + tgt_xclk = max(tgt_xclk, (u32)OV5640_XCLK_MIN); + ov5640_data.mclk = tgt_xclk; + + pr_debug(" Setting mclk to %d MHz\n", tgt_xclk / 1000000); + ret = clk_set_rate(ov5640_data.sensor_clk, ov5640_data.mclk); + if (ret < 0) + pr_debug("set rate filed, rate=%d\n", ov5640_data.mclk); + return ret; +} + +/* download ov5640 settings to sensor through i2c */ +static int ov5640_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 = ov5640_read_reg(RegAddr, &RegVal); + if (retval < 0) + goto err; + + RegVal &= ~(u8)Mask; + Val &= Mask; + Val |= RegVal; + } + + retval = ov5640_write_reg(RegAddr, Val); + if (retval < 0) + goto err; + + if (Delay_ms) + msleep(Delay_ms); + } +err: + return retval; +} + +static void ov5640_soft_reset(void) +{ + /* sysclk from pad */ + ov5640_write_reg(0x3103, 0x11); + + /* software reset */ + ov5640_write_reg(0x3008, 0x82); + + /* delay at least 5ms */ + msleep(10); +} + +static int ov5640_config_init(void) +{ + struct reg_value *pModeSetting = NULL; + int ArySize = 0, retval = 0; + + /* Configure ov5640 initial parm */ + pModeSetting = ov5640_init_parm; + ArySize = ARRAY_SIZE(ov5640_init_parm); + + retval = ov5640_download_firmware(pModeSetting, ArySize); + if (retval < 0) + return retval; + + return 0; +} + +static int ov5640_config_resolution(enum ov5640_mode mode) +{ + struct reg_value *pModeSetting = NULL; + int ArySize = 0, retval = 0; + + if (mode < ov5640_mode_MIN || mode > ov5640_mode_MAX) + return -EINVAL; + + if (mode == ov5640_mode_1080P_1920_1080) { + ov5640_write_reg(0x3709, 0x12); + ov5640_write_reg(0x3821, 0x06); + } + + /* Configure ov5640 initial parm */ + pModeSetting = ov5640_mode_info_data[mode].init_data_ptr; + ArySize = ov5640_mode_info_data[mode].init_data_size; + + retval = ov5640_download_firmware(pModeSetting, ArySize); + if (retval < 0) + return retval; + + return 0; +} + +static int ov5640_config_others(enum ov5640_frame_rate rate, + enum ov5640_mode mode) +{ + struct reg_value *pModeSetting = NULL; + int ArySize = 0, retval = 0; + + if (mode < ov5640_mode_MIN || mode > ov5640_mode_MAX) + return -EINVAL; + + pModeSetting = ov5640_pll_info_data[rate][mode].init_data_ptr; + ArySize = ov5640_pll_info_data[rate][mode].init_data_size; + retval = ov5640_download_firmware(pModeSetting, ArySize); + if (retval < 0) + return retval; + + /* Configure ov5640 initial parm */ + pModeSetting = ov5640_config; + ArySize = ARRAY_SIZE(ov5640_config); + retval = ov5640_download_firmware(pModeSetting, ArySize); + if (retval < 0) + return retval; + + return 0; +} + +static void ov5640_start(void) +{ + ov5640_write_reg(0x3008, 0x02); + ov5640_write_reg(0x3008, 0x02); + msleep(1); +} + +static int ov5640_change_mode(enum ov5640_frame_rate rate, + enum ov5640_mode mode) +{ + int retval; + + if (mode == ov5640_mode_1080P_1920_1080 && rate != ov5640_15_fps) { + pr_warning("1080P only suppoert 15fps frame rate\n"); + rate = ov5640_15_fps; + } + + retval = ov5640_config_resolution(mode); + if (retval < 0) { + pr_err("%s config resolution fail\n", __func__); + return -EINVAL; + } + + retval = ov5640_config_others(rate, mode); + if (retval < 0) { + pr_err("%s config others fail\n", __func__); + return -EINVAL; + } + + return 0; +} + +static int init_device(void) +{ + int retval; + + ov5640_soft_reset(); + retval = ov5640_config_init(); + if (retval < 0) + return retval; + + retval = ov5640_config_resolution(ov5640_mode_VGA_640_480); + if (retval < 0) + return retval; + + retval = ov5640_config_others(ov5640_30_fps, ov5640_mode_VGA_640_480); + if (retval < 0) + return retval; + + ov5640_start(); + + return 0; +} + +static void ov5640_stop(void) +{ + ov5640_write_reg(0x3008, 0x42); + msleep(1); +} + +/*! + * ov5640_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 ov5640_s_power(struct v4l2_subdev *sd, int on) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *sensor = to_ov5640(client); + + if (on) + clk_prepare_enable(ov5640_data.sensor_clk); + else + clk_disable_unprepare(ov5640_data.sensor_clk); + + sensor->on = on; + return 0; +} + +/*! + * ov5640_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 ov5640_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *a) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *sensor = to_ov5640(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: + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + 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 ov5640_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *a) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *sensor = to_ov5640(client); + struct v4l2_fract *timeperframe = &a->parm.capture.timeperframe; + u32 tgt_fps; /* target frames per secound */ + enum ov5640_frame_rate frame_rate; + enum ov5640_mode mode = a->parm.capture.capturemode; + int ret = 0; + + switch (a->type) { + /* This is the only case currently handled. */ + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + /* 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; + } + + if (mode == ov5640_mode_1080P_1920_1080 && tgt_fps != 15) { + pr_warning("1080P only suppoert 15fps frame rate\n"); + timeperframe->denominator = 15; + timeperframe->numerator = 1; + } + + /* Actual frame rate we use */ + tgt_fps = timeperframe->denominator / + timeperframe->numerator; + + if (tgt_fps == 30) + frame_rate = ov5640_30_fps; + else if (tgt_fps == 15) + frame_rate = ov5640_15_fps; + else { + pr_err(" The camera frame rate is not supported!\n"); + goto error; + } + + ret = ov5640_change_mode(frame_rate, mode); + if (ret < 0) + goto error; + + sensor->streamcap.timeperframe = *timeperframe; + sensor->streamcap.capturemode = mode; + sensor->pix.width = ov5640_mode_info_data[mode].width; + sensor->pix.height = ov5640_mode_info_data[mode].height; + + 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; + } + +error: + return ret; +} + +static int ov5640_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *sensor = to_ov5640(client); + + if (enable) + ov5640_start(); + else + ov5640_stop(); + + sensor->on = enable; + return 0; +} + +static int ov5640_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 ov5640_datafmt *fmt = ov5640_find_datafmt(mf->code); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *sensor = to_ov5640(client); + + if (format->pad) + return -EINVAL; + + if (!fmt) { + mf->code = ov5640_colour_fmts[0].code; + mf->colorspace = ov5640_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 ov5640_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 ov5640 *sensor = to_ov5640(client); + /*const struct ov5640_datafmt *fmt = sensor->fmt;*/ + + if (format->pad) + return -EINVAL; + + memset(mf, 0, sizeof(struct v4l2_mbus_framefmt)); + + mf->code = ov5640_colour_fmts[0].code; + mf->colorspace = ov5640_colour_fmts[0].colorspace; + mf->width = sensor->pix.width; + mf->height = sensor->pix.height; + mf->field = V4L2_FIELD_NONE; + mf->reserved[1] = 0; + + dev_dbg(&client->dev, "%s code=0x%x, w/h=(%d,%d), colorspace=%d, field=%d\n", + __func__, mf->code, mf->width, mf->height, mf->colorspace, mf->field); + + return 0; +} + +static int ov5640_enum_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(ov5640_colour_fmts)) + return -EINVAL; + + code->code = ov5640_colour_fmts[code->index].code; + return 0; +} + +/*! + * ov5640_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 ov5640_enum_framesizes(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->index > ov5640_mode_MAX) + return -EINVAL; + + fse->max_width = ov5640_mode_info_data[fse->index].width; + fse->min_width = fse->max_width; + fse->max_height = ov5640_mode_info_data[fse->index].height; + fse->min_height = fse->max_height; + return 0; +} + +/*! + * ov5640_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 ov5640_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 > ov5640_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(ov5640_framerates); i++) { + for (j = 0; j < (ov5640_mode_MAX + 1); j++) { + if (fie->width == ov5640_mode_info_data[j].width + && fie->height == ov5640_mode_info_data[j].height + && ov5640_mode_info_data[j].init_data_ptr != NULL) { + count++; + } + if (fie->index == (count - 1)) { + fie->interval.denominator = ov5640_framerates[i]; + if (ov5640_mode_info_data[j].mode == + ov5640_mode_1080P_1920_1080) + fie->interval.denominator = ov5640_framerates[0]; + return 0; + } + } + } + + return -EINVAL; +} + +static int ov5640_link_setup(struct media_entity *entity, + const struct media_pad *local, + const struct media_pad *remote, u32 flags) +{ + return 0; +} + +static struct v4l2_subdev_video_ops ov5640_subdev_video_ops = { + .g_parm = ov5640_g_parm, + .s_parm = ov5640_s_parm, + .s_stream = ov5640_s_stream, +}; + +static const struct v4l2_subdev_pad_ops ov5640_subdev_pad_ops = { + .enum_frame_size = ov5640_enum_framesizes, + .enum_frame_interval = ov5640_enum_frameintervals, + .enum_mbus_code = ov5640_enum_code, + .set_fmt = ov5640_set_fmt, + .get_fmt = ov5640_get_fmt, +}; + +static struct v4l2_subdev_core_ops ov5640_subdev_core_ops = { + .s_power = ov5640_s_power, +}; + +static struct v4l2_subdev_ops ov5640_subdev_ops = { + .core = &ov5640_subdev_core_ops, + .video = &ov5640_subdev_video_ops, + .pad = &ov5640_subdev_pad_ops, +}; + +static const struct media_entity_operations ov5640_sd_media_ops = { + .link_setup = ov5640_link_setup, +}; + +/*! + * ov5640 I2C probe function + * + * @param adapter struct i2c_adapter * + * @return Error code indicating success or failure + */ +static int ov5640_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct pinctrl *pinctrl; + struct device *dev = &client->dev; + struct v4l2_subdev *sd; + int retval; + u8 chip_id_high, chip_id_low; + + /* ov5640 pinctrl */ + pinctrl = devm_pinctrl_get_select_default(dev); + if (IS_ERR(pinctrl)) { + dev_err(dev, "setup pinctrl failed\n"); + return PTR_ERR(pinctrl); + } + + /* request power down pin */ + pwn_gpio = of_get_named_gpio(dev->of_node, "pwn-gpios", 0); + if (!gpio_is_valid(pwn_gpio)) { + dev_err(dev, "no sensor pwdn pin available\n"); + return -ENODEV; + } + retval = devm_gpio_request_one(dev, pwn_gpio, GPIOF_OUT_INIT_HIGH, + "ov5640_pwdn"); + if (retval < 0) + return retval; + + /* request reset pin */ + rst_gpio = of_get_named_gpio(dev->of_node, "rst-gpios", 0); + if (!gpio_is_valid(rst_gpio)) { + dev_err(dev, "no sensor reset pin available\n"); + devm_gpio_free(dev, rst_gpio); + return -EINVAL; + } + retval = devm_gpio_request_one(dev, rst_gpio, GPIOF_OUT_INIT_LOW, + "ov5640_reset"); + if (retval < 0) { + devm_gpio_free(dev, pwn_gpio); + return retval; + } + + /* Set initial values for the sensor struct. */ + memset(&ov5640_data, 0, sizeof(ov5640_data)); + ov5640_data.sensor_clk = devm_clk_get(dev, "csi_mclk"); + if (IS_ERR(ov5640_data.sensor_clk)) { + dev_err(dev, "get mclk failed\n"); + devm_gpio_free(dev, pwn_gpio); + devm_gpio_free(dev, rst_gpio); + return PTR_ERR(ov5640_data.sensor_clk); + } + + retval = of_property_read_u32(dev->of_node, "mclk", + &ov5640_data.mclk); + if (retval) { + dev_err(dev, "mclk frequency is invalid\n"); + return retval; + } + + retval = of_property_read_u32(dev->of_node, "mclk_source", + (u32 *) &(ov5640_data.mclk_source)); + if (retval) { + dev_err(dev, "mclk_source invalid\n"); + return retval; + } + + retval = of_property_read_u32(dev->of_node, "csi_id", + &(ov5640_data.csi)); + if (retval) { + dev_err(dev, "csi_id invalid\n"); + return retval; + } + + /* Set mclk rate before clk on */ + ov5640_set_clk_rate(); + + retval = clk_prepare_enable(ov5640_data.sensor_clk); + if (retval < 0) { + dev_err(dev, "%s: enable sensor clk fail\n", __func__); + return -EINVAL; + } + + ov5640_data.io_init = ov5640_reset; + ov5640_data.i2c_client = client; + + ov5640_data.pix.pixelformat = V4L2_PIX_FMT_YVYU; + ov5640_data.pix.width = ov5640_mode_info_data[0].width; + ov5640_data.pix.height = ov5640_mode_info_data[0].height; + ov5640_data.streamcap.capability = V4L2_MODE_HIGHQUALITY | + V4L2_CAP_TIMEPERFRAME; + ov5640_data.streamcap.capturemode = 0; + ov5640_data.streamcap.timeperframe.denominator = DEFAULT_FPS; + ov5640_data.streamcap.timeperframe.numerator = 1; + + ov5640_regulator_enable(&client->dev); + + ov5640_reset(); + + retval = ov5640_read_reg(OV5640_CHIP_ID_HIGH_BYTE, &chip_id_high); + if (retval < 0 || chip_id_high != 0x56) { + clk_disable_unprepare(ov5640_data.sensor_clk); + pr_warning("camera ov5640 is not found\n"); + return -ENODEV; + } + retval = ov5640_read_reg(OV5640_CHIP_ID_LOW_BYTE, &chip_id_low); + if (retval < 0 || chip_id_low != 0x40) { + clk_disable_unprepare(ov5640_data.sensor_clk); + pr_warning("camera ov5640 is not found\n"); + return -ENODEV; + } + + retval = init_device(); + if (retval < 0) { + clk_disable_unprepare(ov5640_data.sensor_clk); + pr_warning("camera ov5640 init fail\n"); + return -ENODEV; + } + + sd = &ov5640_data.subdev; + v4l2_i2c_subdev_init(sd, client, &ov5640_subdev_ops); + + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; + ov5640_data.pads[OV5640_SENS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + + retval = media_entity_pads_init(&sd->entity, OV5640_SENS_PADS_NUM, + ov5640_data.pads); + sd->entity.ops = &ov5640_sd_media_ops; + if (retval < 0) + return retval; + + retval = v4l2_async_register_subdev(sd); + if (retval < 0) { + dev_err(&client->dev, + "%s--Async register failed, ret=%d\n", __func__, retval); + media_entity_cleanup(&sd->entity); + } + + clk_disable_unprepare(ov5640_data.sensor_clk); + + pr_info("%s camera ov5640, is found\n", __func__); + return retval; +} + +/*! + * ov5640 I2C detach function + * + * @param client struct i2c_client * + * @return Error code indicating success or failure + */ +static int ov5640_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_async_unregister_subdev(sd); + + clk_unprepare(ov5640_data.sensor_clk); + + ov5640_power_down(1); + + 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(ov5640_i2c_driver); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("OV5640 Camera Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("3.0"); +MODULE_ALIAS("CSI"); |