| /* |
| * Driver for OV5642 CMOS Image Sensor from Omnivision |
| * |
| * Copyright (C) 2011, Bastian Hecht <hechtb@gmail.com> |
| * |
| * Based on Sony IMX074 Camera Driver |
| * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| * |
| * Based on Omnivision OV7670 Camera Driver |
| * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/bitops.h> |
| #include <linux/delay.h> |
| #include <linux/i2c.h> |
| #include <linux/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/videodev2.h> |
| #include <linux/module.h> |
| #include <linux/v4l2-mediabus.h> |
| |
| #include <media/soc_camera.h> |
| #include <media/v4l2-clk.h> |
| #include <media/v4l2-subdev.h> |
| |
| /* OV5642 registers */ |
| #define REG_CHIP_ID_HIGH 0x300a |
| #define REG_CHIP_ID_LOW 0x300b |
| |
| #define REG_WINDOW_START_X_HIGH 0x3800 |
| #define REG_WINDOW_START_X_LOW 0x3801 |
| #define REG_WINDOW_START_Y_HIGH 0x3802 |
| #define REG_WINDOW_START_Y_LOW 0x3803 |
| #define REG_WINDOW_WIDTH_HIGH 0x3804 |
| #define REG_WINDOW_WIDTH_LOW 0x3805 |
| #define REG_WINDOW_HEIGHT_HIGH 0x3806 |
| #define REG_WINDOW_HEIGHT_LOW 0x3807 |
| #define REG_OUT_WIDTH_HIGH 0x3808 |
| #define REG_OUT_WIDTH_LOW 0x3809 |
| #define REG_OUT_HEIGHT_HIGH 0x380a |
| #define REG_OUT_HEIGHT_LOW 0x380b |
| #define REG_OUT_TOTAL_WIDTH_HIGH 0x380c |
| #define REG_OUT_TOTAL_WIDTH_LOW 0x380d |
| #define REG_OUT_TOTAL_HEIGHT_HIGH 0x380e |
| #define REG_OUT_TOTAL_HEIGHT_LOW 0x380f |
| #define REG_OUTPUT_FORMAT 0x4300 |
| #define REG_ISP_CTRL_01 0x5001 |
| #define REG_AVG_WINDOW_END_X_HIGH 0x5682 |
| #define REG_AVG_WINDOW_END_X_LOW 0x5683 |
| #define REG_AVG_WINDOW_END_Y_HIGH 0x5686 |
| #define REG_AVG_WINDOW_END_Y_LOW 0x5687 |
| |
| /* active pixel array size */ |
| #define OV5642_SENSOR_SIZE_X 2592 |
| #define OV5642_SENSOR_SIZE_Y 1944 |
| |
| /* |
| * About OV5642 resolution, cropping and binning: |
| * This sensor supports it all, at least in the feature description. |
| * Unfortunately, no combination of appropriate registers settings could make |
| * the chip work the intended way. As it works with predefined register lists, |
| * some undocumented registers are presumably changed there to achieve their |
| * goals. |
| * This driver currently only works for resolutions up to 720 lines with a |
| * 1:1 scale. Hopefully these restrictions will be removed in the future. |
| */ |
| #define OV5642_MAX_WIDTH OV5642_SENSOR_SIZE_X |
| #define OV5642_MAX_HEIGHT 720 |
| |
| /* default sizes */ |
| #define OV5642_DEFAULT_WIDTH 1280 |
| #define OV5642_DEFAULT_HEIGHT OV5642_MAX_HEIGHT |
| |
| /* minimum extra blanking */ |
| #define BLANKING_EXTRA_WIDTH 500 |
| #define BLANKING_EXTRA_HEIGHT 20 |
| |
| /* |
| * the sensor's autoexposure is buggy when setting total_height low. |
| * It tries to expose longer than 1 frame period without taking care of it |
| * and this leads to weird output. So we set 1000 lines as minimum. |
| */ |
| #define BLANKING_MIN_HEIGHT 1000 |
| |
| struct regval_list { |
| u16 reg_num; |
| u8 value; |
| }; |
| |
| static struct regval_list ov5642_default_regs_init[] = { |
| { 0x3103, 0x93 }, |
| { 0x3008, 0x82 }, |
| { 0x3017, 0x7f }, |
| { 0x3018, 0xfc }, |
| { 0x3810, 0xc2 }, |
| { 0x3615, 0xf0 }, |
| { 0x3000, 0x0 }, |
| { 0x3001, 0x0 }, |
| { 0x3002, 0x0 }, |
| { 0x3003, 0x0 }, |
| { 0x3004, 0xff }, |
| { 0x3030, 0x2b }, |
| { 0x3011, 0x8 }, |
| { 0x3010, 0x10 }, |
| { 0x3604, 0x60 }, |
| { 0x3622, 0x60 }, |
| { 0x3621, 0x9 }, |
| { 0x3709, 0x0 }, |
| { 0x4000, 0x21 }, |
| { 0x401d, 0x22 }, |
| { 0x3600, 0x54 }, |
| { 0x3605, 0x4 }, |
| { 0x3606, 0x3f }, |
| { 0x3c01, 0x80 }, |
| { 0x300d, 0x22 }, |
| { 0x3623, 0x22 }, |
| { 0x5000, 0x4f }, |
| { 0x5020, 0x4 }, |
| { 0x5181, 0x79 }, |
| { 0x5182, 0x0 }, |
| { 0x5185, 0x22 }, |
| { 0x5197, 0x1 }, |
| { 0x5500, 0xa }, |
| { 0x5504, 0x0 }, |
| { 0x5505, 0x7f }, |
| { 0x5080, 0x8 }, |
| { 0x300e, 0x18 }, |
| { 0x4610, 0x0 }, |
| { 0x471d, 0x5 }, |
| { 0x4708, 0x6 }, |
| { 0x370c, 0xa0 }, |
| { 0x5687, 0x94 }, |
| { 0x501f, 0x0 }, |
| { 0x5000, 0x4f }, |
| { 0x5001, 0xcf }, |
| { 0x4300, 0x30 }, |
| { 0x4300, 0x30 }, |
| { 0x460b, 0x35 }, |
| { 0x471d, 0x0 }, |
| { 0x3002, 0xc }, |
| { 0x3002, 0x0 }, |
| { 0x4713, 0x3 }, |
| { 0x471c, 0x50 }, |
| { 0x4721, 0x2 }, |
| { 0x4402, 0x90 }, |
| { 0x460c, 0x22 }, |
| { 0x3815, 0x44 }, |
| { 0x3503, 0x7 }, |
| { 0x3501, 0x73 }, |
| { 0x3502, 0x80 }, |
| { 0x350b, 0x0 }, |
| { 0x3818, 0xc8 }, |
| { 0x3824, 0x11 }, |
| { 0x3a00, 0x78 }, |
| { 0x3a1a, 0x4 }, |
| { 0x3a13, 0x30 }, |
| { 0x3a18, 0x0 }, |
| { 0x3a19, 0x7c }, |
| { 0x3a08, 0x12 }, |
| { 0x3a09, 0xc0 }, |
| { 0x3a0a, 0xf }, |
| { 0x3a0b, 0xa0 }, |
| { 0x350c, 0x7 }, |
| { 0x350d, 0xd0 }, |
| { 0x3a0d, 0x8 }, |
| { 0x3a0e, 0x6 }, |
| { 0x3500, 0x0 }, |
| { 0x3501, 0x0 }, |
| { 0x3502, 0x0 }, |
| { 0x350a, 0x0 }, |
| { 0x350b, 0x0 }, |
| { 0x3503, 0x0 }, |
| { 0x3a0f, 0x3c }, |
| { 0x3a10, 0x32 }, |
| { 0x3a1b, 0x3c }, |
| { 0x3a1e, 0x32 }, |
| { 0x3a11, 0x80 }, |
| { 0x3a1f, 0x20 }, |
| { 0x3030, 0x2b }, |
| { 0x3a02, 0x0 }, |
| { 0x3a03, 0x7d }, |
| { 0x3a04, 0x0 }, |
| { 0x3a14, 0x0 }, |
| { 0x3a15, 0x7d }, |
| { 0x3a16, 0x0 }, |
| { 0x3a00, 0x78 }, |
| { 0x3a08, 0x9 }, |
| { 0x3a09, 0x60 }, |
| { 0x3a0a, 0x7 }, |
| { 0x3a0b, 0xd0 }, |
| { 0x3a0d, 0x10 }, |
| { 0x3a0e, 0xd }, |
| { 0x4407, 0x4 }, |
| { 0x5193, 0x70 }, |
| { 0x589b, 0x0 }, |
| { 0x589a, 0xc0 }, |
| { 0x401e, 0x20 }, |
| { 0x4001, 0x42 }, |
| { 0x401c, 0x6 }, |
| { 0x3825, 0xac }, |
| { 0x3827, 0xc }, |
| { 0x528a, 0x1 }, |
| { 0x528b, 0x4 }, |
| { 0x528c, 0x8 }, |
| { 0x528d, 0x10 }, |
| { 0x528e, 0x20 }, |
| { 0x528f, 0x28 }, |
| { 0x5290, 0x30 }, |
| { 0x5292, 0x0 }, |
| { 0x5293, 0x1 }, |
| { 0x5294, 0x0 }, |
| { 0x5295, 0x4 }, |
| { 0x5296, 0x0 }, |
| { 0x5297, 0x8 }, |
| { 0x5298, 0x0 }, |
| { 0x5299, 0x10 }, |
| { 0x529a, 0x0 }, |
| { 0x529b, 0x20 }, |
| { 0x529c, 0x0 }, |
| { 0x529d, 0x28 }, |
| { 0x529e, 0x0 }, |
| { 0x529f, 0x30 }, |
| { 0x5282, 0x0 }, |
| { 0x5300, 0x0 }, |
| { 0x5301, 0x20 }, |
| { 0x5302, 0x0 }, |
| { 0x5303, 0x7c }, |
| { 0x530c, 0x0 }, |
| { 0x530d, 0xc }, |
| { 0x530e, 0x20 }, |
| { 0x530f, 0x80 }, |
| { 0x5310, 0x20 }, |
| { 0x5311, 0x80 }, |
| { 0x5308, 0x20 }, |
| { 0x5309, 0x40 }, |
| { 0x5304, 0x0 }, |
| { 0x5305, 0x30 }, |
| { 0x5306, 0x0 }, |
| { 0x5307, 0x80 }, |
| { 0x5314, 0x8 }, |
| { 0x5315, 0x20 }, |
| { 0x5319, 0x30 }, |
| { 0x5316, 0x10 }, |
| { 0x5317, 0x0 }, |
| { 0x5318, 0x2 }, |
| { 0x5380, 0x1 }, |
| { 0x5381, 0x0 }, |
| { 0x5382, 0x0 }, |
| { 0x5383, 0x4e }, |
| { 0x5384, 0x0 }, |
| { 0x5385, 0xf }, |
| { 0x5386, 0x0 }, |
| { 0x5387, 0x0 }, |
| { 0x5388, 0x1 }, |
| { 0x5389, 0x15 }, |
| { 0x538a, 0x0 }, |
| { 0x538b, 0x31 }, |
| { 0x538c, 0x0 }, |
| { 0x538d, 0x0 }, |
| { 0x538e, 0x0 }, |
| { 0x538f, 0xf }, |
| { 0x5390, 0x0 }, |
| { 0x5391, 0xab }, |
| { 0x5392, 0x0 }, |
| { 0x5393, 0xa2 }, |
| { 0x5394, 0x8 }, |
| { 0x5480, 0x14 }, |
| { 0x5481, 0x21 }, |
| { 0x5482, 0x36 }, |
| { 0x5483, 0x57 }, |
| { 0x5484, 0x65 }, |
| { 0x5485, 0x71 }, |
| { 0x5486, 0x7d }, |
| { 0x5487, 0x87 }, |
| { 0x5488, 0x91 }, |
| { 0x5489, 0x9a }, |
| { 0x548a, 0xaa }, |
| { 0x548b, 0xb8 }, |
| { 0x548c, 0xcd }, |
| { 0x548d, 0xdd }, |
| { 0x548e, 0xea }, |
| { 0x548f, 0x1d }, |
| { 0x5490, 0x5 }, |
| { 0x5491, 0x0 }, |
| { 0x5492, 0x4 }, |
| { 0x5493, 0x20 }, |
| { 0x5494, 0x3 }, |
| { 0x5495, 0x60 }, |
| { 0x5496, 0x2 }, |
| { 0x5497, 0xb8 }, |
| { 0x5498, 0x2 }, |
| { 0x5499, 0x86 }, |
| { 0x549a, 0x2 }, |
| { 0x549b, 0x5b }, |
| { 0x549c, 0x2 }, |
| { 0x549d, 0x3b }, |
| { 0x549e, 0x2 }, |
| { 0x549f, 0x1c }, |
| { 0x54a0, 0x2 }, |
| { 0x54a1, 0x4 }, |
| { 0x54a2, 0x1 }, |
| { 0x54a3, 0xed }, |
| { 0x54a4, 0x1 }, |
| { 0x54a5, 0xc5 }, |
| { 0x54a6, 0x1 }, |
| { 0x54a7, 0xa5 }, |
| { 0x54a8, 0x1 }, |
| { 0x54a9, 0x6c }, |
| { 0x54aa, 0x1 }, |
| { 0x54ab, 0x41 }, |
| { 0x54ac, 0x1 }, |
| { 0x54ad, 0x20 }, |
| { 0x54ae, 0x0 }, |
| { 0x54af, 0x16 }, |
| { 0x54b0, 0x1 }, |
| { 0x54b1, 0x20 }, |
| { 0x54b2, 0x0 }, |
| { 0x54b3, 0x10 }, |
| { 0x54b4, 0x0 }, |
| { 0x54b5, 0xf0 }, |
| { 0x54b6, 0x0 }, |
| { 0x54b7, 0xdf }, |
| { 0x5402, 0x3f }, |
| { 0x5403, 0x0 }, |
| { 0x3406, 0x0 }, |
| { 0x5180, 0xff }, |
| { 0x5181, 0x52 }, |
| { 0x5182, 0x11 }, |
| { 0x5183, 0x14 }, |
| { 0x5184, 0x25 }, |
| { 0x5185, 0x24 }, |
| { 0x5186, 0x6 }, |
| { 0x5187, 0x8 }, |
| { 0x5188, 0x8 }, |
| { 0x5189, 0x7c }, |
| { 0x518a, 0x60 }, |
| { 0x518b, 0xb2 }, |
| { 0x518c, 0xb2 }, |
| { 0x518d, 0x44 }, |
| { 0x518e, 0x3d }, |
| { 0x518f, 0x58 }, |
| { 0x5190, 0x46 }, |
| { 0x5191, 0xf8 }, |
| { 0x5192, 0x4 }, |
| { 0x5193, 0x70 }, |
| { 0x5194, 0xf0 }, |
| { 0x5195, 0xf0 }, |
| { 0x5196, 0x3 }, |
| { 0x5197, 0x1 }, |
| { 0x5198, 0x4 }, |
| { 0x5199, 0x12 }, |
| { 0x519a, 0x4 }, |
| { 0x519b, 0x0 }, |
| { 0x519c, 0x6 }, |
| { 0x519d, 0x82 }, |
| { 0x519e, 0x0 }, |
| { 0x5025, 0x80 }, |
| { 0x3a0f, 0x38 }, |
| { 0x3a10, 0x30 }, |
| { 0x3a1b, 0x3a }, |
| { 0x3a1e, 0x2e }, |
| { 0x3a11, 0x60 }, |
| { 0x3a1f, 0x10 }, |
| { 0x5688, 0xa6 }, |
| { 0x5689, 0x6a }, |
| { 0x568a, 0xea }, |
| { 0x568b, 0xae }, |
| { 0x568c, 0xa6 }, |
| { 0x568d, 0x6a }, |
| { 0x568e, 0x62 }, |
| { 0x568f, 0x26 }, |
| { 0x5583, 0x40 }, |
| { 0x5584, 0x40 }, |
| { 0x5580, 0x2 }, |
| { 0x5000, 0xcf }, |
| { 0x5800, 0x27 }, |
| { 0x5801, 0x19 }, |
| { 0x5802, 0x12 }, |
| { 0x5803, 0xf }, |
| { 0x5804, 0x10 }, |
| { 0x5805, 0x15 }, |
| { 0x5806, 0x1e }, |
| { 0x5807, 0x2f }, |
| { 0x5808, 0x15 }, |
| { 0x5809, 0xd }, |
| { 0x580a, 0xa }, |
| { 0x580b, 0x9 }, |
| { 0x580c, 0xa }, |
| { 0x580d, 0xc }, |
| { 0x580e, 0x12 }, |
| { 0x580f, 0x19 }, |
| { 0x5810, 0xb }, |
| { 0x5811, 0x7 }, |
| { 0x5812, 0x4 }, |
| { 0x5813, 0x3 }, |
| { 0x5814, 0x3 }, |
| { 0x5815, 0x6 }, |
| { 0x5816, 0xa }, |
| { 0x5817, 0xf }, |
| { 0x5818, 0xa }, |
| { 0x5819, 0x5 }, |
| { 0x581a, 0x1 }, |
| { 0x581b, 0x0 }, |
| { 0x581c, 0x0 }, |
| { 0x581d, 0x3 }, |
| { 0x581e, 0x8 }, |
| { 0x581f, 0xc }, |
| { 0x5820, 0xa }, |
| { 0x5821, 0x5 }, |
| { 0x5822, 0x1 }, |
| { 0x5823, 0x0 }, |
| { 0x5824, 0x0 }, |
| { 0x5825, 0x3 }, |
| { 0x5826, 0x8 }, |
| { 0x5827, 0xc }, |
| { 0x5828, 0xe }, |
| { 0x5829, 0x8 }, |
| { 0x582a, 0x6 }, |
| { 0x582b, 0x4 }, |
| { 0x582c, 0x5 }, |
| { 0x582d, 0x7 }, |
| { 0x582e, 0xb }, |
| { 0x582f, 0x12 }, |
| { 0x5830, 0x18 }, |
| { 0x5831, 0x10 }, |
| { 0x5832, 0xc }, |
| { 0x5833, 0xa }, |
| { 0x5834, 0xb }, |
| { 0x5835, 0xe }, |
| { 0x5836, 0x15 }, |
| { 0x5837, 0x19 }, |
| { 0x5838, 0x32 }, |
| { 0x5839, 0x1f }, |
| { 0x583a, 0x18 }, |
| { 0x583b, 0x16 }, |
| { 0x583c, 0x17 }, |
| { 0x583d, 0x1e }, |
| { 0x583e, 0x26 }, |
| { 0x583f, 0x53 }, |
| { 0x5840, 0x10 }, |
| { 0x5841, 0xf }, |
| { 0x5842, 0xd }, |
| { 0x5843, 0xc }, |
| { 0x5844, 0xe }, |
| { 0x5845, 0x9 }, |
| { 0x5846, 0x11 }, |
| { 0x5847, 0x10 }, |
| { 0x5848, 0x10 }, |
| { 0x5849, 0x10 }, |
| { 0x584a, 0x10 }, |
| { 0x584b, 0xe }, |
| { 0x584c, 0x10 }, |
| { 0x584d, 0x10 }, |
| { 0x584e, 0x11 }, |
| { 0x584f, 0x10 }, |
| { 0x5850, 0xf }, |
| { 0x5851, 0xc }, |
| { 0x5852, 0xf }, |
| { 0x5853, 0x10 }, |
| { 0x5854, 0x10 }, |
| { 0x5855, 0xf }, |
| { 0x5856, 0xe }, |
| { 0x5857, 0xb }, |
| { 0x5858, 0x10 }, |
| { 0x5859, 0xd }, |
| { 0x585a, 0xd }, |
| { 0x585b, 0xc }, |
| { 0x585c, 0xc }, |
| { 0x585d, 0xc }, |
| { 0x585e, 0xb }, |
| { 0x585f, 0xc }, |
| { 0x5860, 0xc }, |
| { 0x5861, 0xc }, |
| { 0x5862, 0xd }, |
| { 0x5863, 0x8 }, |
| { 0x5864, 0x11 }, |
| { 0x5865, 0x18 }, |
| { 0x5866, 0x18 }, |
| { 0x5867, 0x19 }, |
| { 0x5868, 0x17 }, |
| { 0x5869, 0x19 }, |
| { 0x586a, 0x16 }, |
| { 0x586b, 0x13 }, |
| { 0x586c, 0x13 }, |
| { 0x586d, 0x12 }, |
| { 0x586e, 0x13 }, |
| { 0x586f, 0x16 }, |
| { 0x5870, 0x14 }, |
| { 0x5871, 0x12 }, |
| { 0x5872, 0x10 }, |
| { 0x5873, 0x11 }, |
| { 0x5874, 0x11 }, |
| { 0x5875, 0x16 }, |
| { 0x5876, 0x14 }, |
| { 0x5877, 0x11 }, |
| { 0x5878, 0x10 }, |
| { 0x5879, 0xf }, |
| { 0x587a, 0x10 }, |
| { 0x587b, 0x14 }, |
| { 0x587c, 0x13 }, |
| { 0x587d, 0x12 }, |
| { 0x587e, 0x11 }, |
| { 0x587f, 0x11 }, |
| { 0x5880, 0x12 }, |
| { 0x5881, 0x15 }, |
| { 0x5882, 0x14 }, |
| { 0x5883, 0x15 }, |
| { 0x5884, 0x15 }, |
| { 0x5885, 0x15 }, |
| { 0x5886, 0x13 }, |
| { 0x5887, 0x17 }, |
| { 0x3710, 0x10 }, |
| { 0x3632, 0x51 }, |
| { 0x3702, 0x10 }, |
| { 0x3703, 0xb2 }, |
| { 0x3704, 0x18 }, |
| { 0x370b, 0x40 }, |
| { 0x370d, 0x3 }, |
| { 0x3631, 0x1 }, |
| { 0x3632, 0x52 }, |
| { 0x3606, 0x24 }, |
| { 0x3620, 0x96 }, |
| { 0x5785, 0x7 }, |
| { 0x3a13, 0x30 }, |
| { 0x3600, 0x52 }, |
| { 0x3604, 0x48 }, |
| { 0x3606, 0x1b }, |
| { 0x370d, 0xb }, |
| { 0x370f, 0xc0 }, |
| { 0x3709, 0x1 }, |
| { 0x3823, 0x0 }, |
| { 0x5007, 0x0 }, |
| { 0x5009, 0x0 }, |
| { 0x5011, 0x0 }, |
| { 0x5013, 0x0 }, |
| { 0x519e, 0x0 }, |
| { 0x5086, 0x0 }, |
| { 0x5087, 0x0 }, |
| { 0x5088, 0x0 }, |
| { 0x5089, 0x0 }, |
| { 0x302b, 0x0 }, |
| { 0x3503, 0x7 }, |
| { 0x3011, 0x8 }, |
| { 0x350c, 0x2 }, |
| { 0x350d, 0xe4 }, |
| { 0x3621, 0xc9 }, |
| { 0x370a, 0x81 }, |
| { 0xffff, 0xff }, |
| }; |
| |
| static struct regval_list ov5642_default_regs_finalise[] = { |
| { 0x3810, 0xc2 }, |
| { 0x3818, 0xc9 }, |
| { 0x381c, 0x10 }, |
| { 0x381d, 0xa0 }, |
| { 0x381e, 0x5 }, |
| { 0x381f, 0xb0 }, |
| { 0x3820, 0x0 }, |
| { 0x3821, 0x0 }, |
| { 0x3824, 0x11 }, |
| { 0x3a08, 0x1b }, |
| { 0x3a09, 0xc0 }, |
| { 0x3a0a, 0x17 }, |
| { 0x3a0b, 0x20 }, |
| { 0x3a0d, 0x2 }, |
| { 0x3a0e, 0x1 }, |
| { 0x401c, 0x4 }, |
| { 0x5682, 0x5 }, |
| { 0x5683, 0x0 }, |
| { 0x5686, 0x2 }, |
| { 0x5687, 0xcc }, |
| { 0x5001, 0x4f }, |
| { 0x589b, 0x6 }, |
| { 0x589a, 0xc5 }, |
| { 0x3503, 0x0 }, |
| { 0x460c, 0x20 }, |
| { 0x460b, 0x37 }, |
| { 0x471c, 0xd0 }, |
| { 0x471d, 0x5 }, |
| { 0x3815, 0x1 }, |
| { 0x3818, 0xc1 }, |
| { 0x501f, 0x0 }, |
| { 0x5002, 0xe0 }, |
| { 0x4300, 0x32 }, /* UYVY */ |
| { 0x3002, 0x1c }, |
| { 0x4800, 0x14 }, |
| { 0x4801, 0xf }, |
| { 0x3007, 0x3b }, |
| { 0x300e, 0x4 }, |
| { 0x4803, 0x50 }, |
| { 0x3815, 0x1 }, |
| { 0x4713, 0x2 }, |
| { 0x4842, 0x1 }, |
| { 0x300f, 0xe }, |
| { 0x3003, 0x3 }, |
| { 0x3003, 0x1 }, |
| { 0xffff, 0xff }, |
| }; |
| |
| struct ov5642_datafmt { |
| enum v4l2_mbus_pixelcode code; |
| enum v4l2_colorspace colorspace; |
| }; |
| |
| struct ov5642 { |
| struct v4l2_subdev subdev; |
| const struct ov5642_datafmt *fmt; |
| struct v4l2_rect crop_rect; |
| struct v4l2_clk *clk; |
| |
| /* blanking information */ |
| int total_width; |
| int total_height; |
| }; |
| |
| static const struct ov5642_datafmt ov5642_colour_fmts[] = { |
| {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG}, |
| }; |
| |
| static struct ov5642 *to_ov5642(const struct i2c_client *client) |
| { |
| return container_of(i2c_get_clientdata(client), struct ov5642, subdev); |
| } |
| |
| /* Find a data format by a pixel code in an array */ |
| static const struct ov5642_datafmt |
| *ov5642_find_datafmt(enum v4l2_mbus_pixelcode code) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(ov5642_colour_fmts); i++) |
| if (ov5642_colour_fmts[i].code == code) |
| return ov5642_colour_fmts + i; |
| |
| return NULL; |
| } |
| |
| static int reg_read(struct i2c_client *client, u16 reg, u8 *val) |
| { |
| int ret; |
| /* We have 16-bit i2c addresses - care for endianess */ |
| unsigned char data[2] = { reg >> 8, reg & 0xff }; |
| |
| ret = i2c_master_send(client, data, 2); |
| if (ret < 2) { |
| dev_err(&client->dev, "%s: i2c read error, reg: %x\n", |
| __func__, reg); |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| ret = i2c_master_recv(client, val, 1); |
| if (ret < 1) { |
| dev_err(&client->dev, "%s: i2c read error, reg: %x\n", |
| __func__, reg); |
| return ret < 0 ? ret : -EIO; |
| } |
| return 0; |
| } |
| |
| static int reg_write(struct i2c_client *client, u16 reg, u8 val) |
| { |
| int ret; |
| unsigned char data[3] = { reg >> 8, reg & 0xff, val }; |
| |
| ret = i2c_master_send(client, data, 3); |
| if (ret < 3) { |
| dev_err(&client->dev, "%s: i2c write error, reg: %x\n", |
| __func__, reg); |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * convenience function to write 16 bit register values that are split up |
| * into two consecutive high and low parts |
| */ |
| static int reg_write16(struct i2c_client *client, u16 reg, u16 val16) |
| { |
| int ret; |
| |
| ret = reg_write(client, reg, val16 >> 8); |
| if (ret) |
| return ret; |
| return reg_write(client, reg + 1, val16 & 0x00ff); |
| } |
| |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| static int ov5642_get_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret; |
| u8 val; |
| |
| if (reg->reg & ~0xffff) |
| return -EINVAL; |
| |
| reg->size = 1; |
| |
| ret = reg_read(client, reg->reg, &val); |
| if (!ret) |
| reg->val = (__u64)val; |
| |
| return ret; |
| } |
| |
| static int ov5642_set_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| if (reg->reg & ~0xffff || reg->val & ~0xff) |
| return -EINVAL; |
| |
| return reg_write(client, reg->reg, reg->val); |
| } |
| #endif |
| |
| static int ov5642_write_array(struct i2c_client *client, |
| struct regval_list *vals) |
| { |
| while (vals->reg_num != 0xffff || vals->value != 0xff) { |
| int ret = reg_write(client, vals->reg_num, vals->value); |
| if (ret < 0) |
| return ret; |
| vals++; |
| } |
| dev_dbg(&client->dev, "Register list loaded\n"); |
| return 0; |
| } |
| |
| static int ov5642_set_resolution(struct v4l2_subdev *sd) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5642 *priv = to_ov5642(client); |
| int width = priv->crop_rect.width; |
| int height = priv->crop_rect.height; |
| int total_width = priv->total_width; |
| int total_height = priv->total_height; |
| int start_x = (OV5642_SENSOR_SIZE_X - width) / 2; |
| int start_y = (OV5642_SENSOR_SIZE_Y - height) / 2; |
| int ret; |
| |
| /* |
| * This should set the starting point for cropping. |
| * Doesn't work so far. |
| */ |
| ret = reg_write16(client, REG_WINDOW_START_X_HIGH, start_x); |
| if (!ret) |
| ret = reg_write16(client, REG_WINDOW_START_Y_HIGH, start_y); |
| if (!ret) { |
| priv->crop_rect.left = start_x; |
| priv->crop_rect.top = start_y; |
| } |
| |
| if (!ret) |
| ret = reg_write16(client, REG_WINDOW_WIDTH_HIGH, width); |
| if (!ret) |
| ret = reg_write16(client, REG_WINDOW_HEIGHT_HIGH, height); |
| if (ret) |
| return ret; |
| priv->crop_rect.width = width; |
| priv->crop_rect.height = height; |
| |
| /* Set the output window size. Only 1:1 scale is supported so far. */ |
| ret = reg_write16(client, REG_OUT_WIDTH_HIGH, width); |
| if (!ret) |
| ret = reg_write16(client, REG_OUT_HEIGHT_HIGH, height); |
| |
| /* Total width = output size + blanking */ |
| if (!ret) |
| ret = reg_write16(client, REG_OUT_TOTAL_WIDTH_HIGH, total_width); |
| if (!ret) |
| ret = reg_write16(client, REG_OUT_TOTAL_HEIGHT_HIGH, total_height); |
| |
| /* Sets the window for AWB calculations */ |
| if (!ret) |
| ret = reg_write16(client, REG_AVG_WINDOW_END_X_HIGH, width); |
| if (!ret) |
| ret = reg_write16(client, REG_AVG_WINDOW_END_Y_HIGH, height); |
| |
| return ret; |
| } |
| |
| static int ov5642_try_fmt(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *mf) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5642 *priv = to_ov5642(client); |
| const struct ov5642_datafmt *fmt = ov5642_find_datafmt(mf->code); |
| |
| mf->width = priv->crop_rect.width; |
| mf->height = priv->crop_rect.height; |
| |
| if (!fmt) { |
| mf->code = ov5642_colour_fmts[0].code; |
| mf->colorspace = ov5642_colour_fmts[0].colorspace; |
| } |
| |
| mf->field = V4L2_FIELD_NONE; |
| |
| return 0; |
| } |
| |
| static int ov5642_s_fmt(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *mf) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5642 *priv = to_ov5642(client); |
| |
| /* MIPI CSI could have changed the format, double-check */ |
| if (!ov5642_find_datafmt(mf->code)) |
| return -EINVAL; |
| |
| ov5642_try_fmt(sd, mf); |
| priv->fmt = ov5642_find_datafmt(mf->code); |
| |
| return 0; |
| } |
| |
| static int ov5642_g_fmt(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *mf) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5642 *priv = to_ov5642(client); |
| |
| const struct ov5642_datafmt *fmt = priv->fmt; |
| |
| mf->code = fmt->code; |
| mf->colorspace = fmt->colorspace; |
| mf->width = priv->crop_rect.width; |
| mf->height = priv->crop_rect.height; |
| mf->field = V4L2_FIELD_NONE; |
| |
| return 0; |
| } |
| |
| static int ov5642_enum_fmt(struct v4l2_subdev *sd, unsigned int index, |
| enum v4l2_mbus_pixelcode *code) |
| { |
| if (index >= ARRAY_SIZE(ov5642_colour_fmts)) |
| return -EINVAL; |
| |
| *code = ov5642_colour_fmts[index].code; |
| return 0; |
| } |
| |
| static int ov5642_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5642 *priv = to_ov5642(client); |
| struct v4l2_rect rect = a->c; |
| int ret; |
| |
| v4l_bound_align_image(&rect.width, 48, OV5642_MAX_WIDTH, 1, |
| &rect.height, 32, OV5642_MAX_HEIGHT, 1, 0); |
| |
| priv->crop_rect.width = rect.width; |
| priv->crop_rect.height = rect.height; |
| priv->total_width = rect.width + BLANKING_EXTRA_WIDTH; |
| priv->total_height = max_t(int, rect.height + |
| BLANKING_EXTRA_HEIGHT, |
| BLANKING_MIN_HEIGHT); |
| priv->crop_rect.width = rect.width; |
| priv->crop_rect.height = rect.height; |
| |
| ret = ov5642_write_array(client, ov5642_default_regs_init); |
| if (!ret) |
| ret = ov5642_set_resolution(sd); |
| if (!ret) |
| ret = ov5642_write_array(client, ov5642_default_regs_finalise); |
| |
| return ret; |
| } |
| |
| static int ov5642_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct ov5642 *priv = to_ov5642(client); |
| struct v4l2_rect *rect = &a->c; |
| |
| if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| *rect = priv->crop_rect; |
| |
| return 0; |
| } |
| |
| static int ov5642_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) |
| { |
| a->bounds.left = 0; |
| a->bounds.top = 0; |
| a->bounds.width = OV5642_MAX_WIDTH; |
| a->bounds.height = OV5642_MAX_HEIGHT; |
| a->defrect = a->bounds; |
| a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| a->pixelaspect.numerator = 1; |
| a->pixelaspect.denominator = 1; |
| |
| return 0; |
| } |
| |
| static int ov5642_g_mbus_config(struct v4l2_subdev *sd, |
| struct v4l2_mbus_config *cfg) |
| { |
| cfg->type = V4L2_MBUS_CSI2; |
| cfg->flags = V4L2_MBUS_CSI2_2_LANE | V4L2_MBUS_CSI2_CHANNEL_0 | |
| V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; |
| |
| return 0; |
| } |
| |
| static int ov5642_s_power(struct v4l2_subdev *sd, int on) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); |
| struct ov5642 *priv = to_ov5642(client); |
| int ret; |
| |
| if (!on) |
| return soc_camera_power_off(&client->dev, ssdd, priv->clk); |
| |
| ret = soc_camera_power_on(&client->dev, ssdd, priv->clk); |
| if (ret < 0) |
| return ret; |
| |
| ret = ov5642_write_array(client, ov5642_default_regs_init); |
| if (!ret) |
| ret = ov5642_set_resolution(sd); |
| if (!ret) |
| ret = ov5642_write_array(client, ov5642_default_regs_finalise); |
| |
| return ret; |
| } |
| |
| static struct v4l2_subdev_video_ops ov5642_subdev_video_ops = { |
| .s_mbus_fmt = ov5642_s_fmt, |
| .g_mbus_fmt = ov5642_g_fmt, |
| .try_mbus_fmt = ov5642_try_fmt, |
| .enum_mbus_fmt = ov5642_enum_fmt, |
| .s_crop = ov5642_s_crop, |
| .g_crop = ov5642_g_crop, |
| .cropcap = ov5642_cropcap, |
| .g_mbus_config = ov5642_g_mbus_config, |
| }; |
| |
| static struct v4l2_subdev_core_ops ov5642_subdev_core_ops = { |
| .s_power = ov5642_s_power, |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| .g_register = ov5642_get_register, |
| .s_register = ov5642_set_register, |
| #endif |
| }; |
| |
| static struct v4l2_subdev_ops ov5642_subdev_ops = { |
| .core = &ov5642_subdev_core_ops, |
| .video = &ov5642_subdev_video_ops, |
| }; |
| |
| static int ov5642_video_probe(struct i2c_client *client) |
| { |
| struct v4l2_subdev *subdev = i2c_get_clientdata(client); |
| int ret; |
| u8 id_high, id_low; |
| u16 id; |
| |
| ret = ov5642_s_power(subdev, 1); |
| if (ret < 0) |
| return ret; |
| |
| /* Read sensor Model ID */ |
| ret = reg_read(client, REG_CHIP_ID_HIGH, &id_high); |
| if (ret < 0) |
| goto done; |
| |
| id = id_high << 8; |
| |
| ret = reg_read(client, REG_CHIP_ID_LOW, &id_low); |
| if (ret < 0) |
| goto done; |
| |
| id |= id_low; |
| |
| dev_info(&client->dev, "Chip ID 0x%04x detected\n", id); |
| |
| if (id != 0x5642) { |
| ret = -ENODEV; |
| goto done; |
| } |
| |
| ret = 0; |
| |
| done: |
| ov5642_s_power(subdev, 0); |
| return ret; |
| } |
| |
| static int ov5642_probe(struct i2c_client *client, |
| const struct i2c_device_id *did) |
| { |
| struct ov5642 *priv; |
| struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); |
| int ret; |
| |
| if (!ssdd) { |
| dev_err(&client->dev, "OV5642: missing platform data!\n"); |
| return -EINVAL; |
| } |
| |
| priv = devm_kzalloc(&client->dev, sizeof(struct ov5642), GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| v4l2_i2c_subdev_init(&priv->subdev, client, &ov5642_subdev_ops); |
| |
| priv->fmt = &ov5642_colour_fmts[0]; |
| |
| priv->crop_rect.width = OV5642_DEFAULT_WIDTH; |
| priv->crop_rect.height = OV5642_DEFAULT_HEIGHT; |
| priv->crop_rect.left = (OV5642_MAX_WIDTH - OV5642_DEFAULT_WIDTH) / 2; |
| priv->crop_rect.top = (OV5642_MAX_HEIGHT - OV5642_DEFAULT_HEIGHT) / 2; |
| priv->total_width = OV5642_DEFAULT_WIDTH + BLANKING_EXTRA_WIDTH; |
| priv->total_height = BLANKING_MIN_HEIGHT; |
| |
| priv->clk = v4l2_clk_get(&client->dev, "mclk"); |
| if (IS_ERR(priv->clk)) |
| return PTR_ERR(priv->clk); |
| |
| ret = ov5642_video_probe(client); |
| if (ret < 0) |
| v4l2_clk_put(priv->clk); |
| |
| return ret; |
| } |
| |
| static int ov5642_remove(struct i2c_client *client) |
| { |
| struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); |
| struct ov5642 *priv = to_ov5642(client); |
| |
| v4l2_clk_put(priv->clk); |
| if (ssdd->free_bus) |
| ssdd->free_bus(ssdd); |
| |
| return 0; |
| } |
| |
| static const struct i2c_device_id ov5642_id[] = { |
| { "ov5642", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, ov5642_id); |
| |
| static struct i2c_driver ov5642_i2c_driver = { |
| .driver = { |
| .name = "ov5642", |
| }, |
| .probe = ov5642_probe, |
| .remove = ov5642_remove, |
| .id_table = ov5642_id, |
| }; |
| |
| module_i2c_driver(ov5642_i2c_driver); |
| |
| MODULE_DESCRIPTION("Omnivision OV5642 Camera driver"); |
| MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>"); |
| MODULE_LICENSE("GPL v2"); |