/* * Driver for the OV5645 camera sensor. * * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved. * Copyright (C) 2015 By Tech Design S.L. All Rights Reserved. * Copyright (C) 2012-2013 Freescale Semiconductor, Inc. All Rights Reserved. * * Based on: * - the OV5645 driver from QC msm-3.10 kernel on codeaurora.org: * https://us.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/ * media/platform/msm/camera_v2/sensor/ov5645.c?h=LA.BR.1.2.4_rb1.41 * - the OV5640 driver posted on linux-media: * https://www.mail-archive.com/linux-media%40vger.kernel.org/msg92671.html */ /* * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define OV5645_VOLTAGE_ANALOG 2800000 #define OV5645_VOLTAGE_DIGITAL_CORE 1500000 #define OV5645_VOLTAGE_DIGITAL_IO 1800000 #define OV5645_SYSTEM_CTRL0 0x3008 #define OV5645_SYSTEM_CTRL0_START 0x02 #define OV5645_SYSTEM_CTRL0_STOP 0x42 #define OV5645_CHIP_ID_HIGH 0x300a #define OV5645_CHIP_ID_HIGH_BYTE 0x56 #define OV5645_CHIP_ID_LOW 0x300b #define OV5645_CHIP_ID_LOW_BYTE 0x45 #define OV5645_AWB_MANUAL_CONTROL 0x3406 #define OV5645_AWB_MANUAL_ENABLE BIT(0) #define OV5645_AEC_PK_MANUAL 0x3503 #define OV5645_AEC_MANUAL_ENABLE BIT(0) #define OV5645_AGC_MANUAL_ENABLE BIT(1) #define OV5645_TIMING_TC_REG20 0x3820 #define OV5645_SENSOR_VFLIP BIT(1) #define OV5645_ISP_VFLIP BIT(2) #define OV5645_TIMING_TC_REG21 0x3821 #define OV5645_SENSOR_MIRROR BIT(1) #define OV5645_PRE_ISP_TEST_SETTING_1 0x503d #define OV5645_TEST_PATTERN_MASK 0x3 #define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK) #define OV5645_TEST_PATTERN_ENABLE BIT(7) #define OV5645_SDE_SAT_U 0x5583 #define OV5645_SDE_SAT_V 0x5584 struct reg_value { u16 reg; u8 val; }; struct ov5645_mode_info { u32 width; u32 height; const struct reg_value *data; u32 data_size; u32 pixel_clock; u32 link_freq; }; struct ov5645 { struct i2c_client *i2c_client; struct device *dev; struct v4l2_subdev sd; struct media_pad pad; struct v4l2_fwnode_endpoint ep; struct v4l2_mbus_framefmt fmt; struct v4l2_rect crop; struct clk *xclk; struct regulator *io_regulator; struct regulator *core_regulator; struct regulator *analog_regulator; const struct ov5645_mode_info *current_mode; struct v4l2_ctrl_handler ctrls; struct v4l2_ctrl *pixel_clock; struct v4l2_ctrl *link_freq; /* Cached register values */ u8 aec_pk_manual; u8 timing_tc_reg20; u8 timing_tc_reg21; struct mutex power_lock; /* lock to protect power state */ int power_count; struct gpio_desc *enable_gpio; struct gpio_desc *rst_gpio; }; static inline struct ov5645 *to_ov5645(struct v4l2_subdev *sd) { return container_of(sd, struct ov5645, sd); } static const struct reg_value ov5645_global_init_setting[] = { { 0x3103, 0x11 }, { 0x3008, 0x82 }, { 0x3008, 0x42 }, { 0x3103, 0x03 }, { 0x3503, 0x07 }, { 0x3002, 0x1c }, { 0x3006, 0xc3 }, { 0x300e, 0x45 }, { 0x3017, 0x00 }, { 0x3018, 0x00 }, { 0x302e, 0x0b }, { 0x3037, 0x13 }, { 0x3108, 0x01 }, { 0x3611, 0x06 }, { 0x3500, 0x00 }, { 0x3501, 0x01 }, { 0x3502, 0x00 }, { 0x350a, 0x00 }, { 0x350b, 0x3f }, { 0x3620, 0x33 }, { 0x3621, 0xe0 }, { 0x3622, 0x01 }, { 0x3630, 0x2e }, { 0x3631, 0x00 }, { 0x3632, 0x32 }, { 0x3633, 0x52 }, { 0x3634, 0x70 }, { 0x3635, 0x13 }, { 0x3636, 0x03 }, { 0x3703, 0x5a }, { 0x3704, 0xa0 }, { 0x3705, 0x1a }, { 0x3709, 0x12 }, { 0x370b, 0x61 }, { 0x370f, 0x10 }, { 0x3715, 0x78 }, { 0x3717, 0x01 }, { 0x371b, 0x20 }, { 0x3731, 0x12 }, { 0x3901, 0x0a }, { 0x3905, 0x02 }, { 0x3906, 0x10 }, { 0x3719, 0x86 }, { 0x3810, 0x00 }, { 0x3811, 0x10 }, { 0x3812, 0x00 }, { 0x3821, 0x01 }, { 0x3824, 0x01 }, { 0x3826, 0x03 }, { 0x3828, 0x08 }, { 0x3a19, 0xf8 }, { 0x3c01, 0x34 }, { 0x3c04, 0x28 }, { 0x3c05, 0x98 }, { 0x3c07, 0x07 }, { 0x3c09, 0xc2 }, { 0x3c0a, 0x9c }, { 0x3c0b, 0x40 }, { 0x3c01, 0x34 }, { 0x4001, 0x02 }, { 0x4514, 0x00 }, { 0x4520, 0xb0 }, { 0x460b, 0x37 }, { 0x460c, 0x20 }, { 0x4818, 0x01 }, { 0x481d, 0xf0 }, { 0x481f, 0x50 }, { 0x4823, 0x70 }, { 0x4831, 0x14 }, { 0x5000, 0xa7 }, { 0x5001, 0x83 }, { 0x501d, 0x00 }, { 0x501f, 0x00 }, { 0x503d, 0x00 }, { 0x505c, 0x30 }, { 0x5181, 0x59 }, { 0x5183, 0x00 }, { 0x5191, 0xf0 }, { 0x5192, 0x03 }, { 0x5684, 0x10 }, { 0x5685, 0xa0 }, { 0x5686, 0x0c }, { 0x5687, 0x78 }, { 0x5a00, 0x08 }, { 0x5a21, 0x00 }, { 0x5a24, 0x00 }, { 0x3008, 0x02 }, { 0x3503, 0x00 }, { 0x5180, 0xff }, { 0x5181, 0xf2 }, { 0x5182, 0x00 }, { 0x5183, 0x14 }, { 0x5184, 0x25 }, { 0x5185, 0x24 }, { 0x5186, 0x09 }, { 0x5187, 0x09 }, { 0x5188, 0x0a }, { 0x5189, 0x75 }, { 0x518a, 0x52 }, { 0x518b, 0xea }, { 0x518c, 0xa8 }, { 0x518d, 0x42 }, { 0x518e, 0x38 }, { 0x518f, 0x56 }, { 0x5190, 0x42 }, { 0x5191, 0xf8 }, { 0x5192, 0x04 }, { 0x5193, 0x70 }, { 0x5194, 0xf0 }, { 0x5195, 0xf0 }, { 0x5196, 0x03 }, { 0x5197, 0x01 }, { 0x5198, 0x04 }, { 0x5199, 0x12 }, { 0x519a, 0x04 }, { 0x519b, 0x00 }, { 0x519c, 0x06 }, { 0x519d, 0x82 }, { 0x519e, 0x38 }, { 0x5381, 0x1e }, { 0x5382, 0x5b }, { 0x5383, 0x08 }, { 0x5384, 0x0a }, { 0x5385, 0x7e }, { 0x5386, 0x88 }, { 0x5387, 0x7c }, { 0x5388, 0x6c }, { 0x5389, 0x10 }, { 0x538a, 0x01 }, { 0x538b, 0x98 }, { 0x5300, 0x08 }, { 0x5301, 0x30 }, { 0x5302, 0x10 }, { 0x5303, 0x00 }, { 0x5304, 0x08 }, { 0x5305, 0x30 }, { 0x5306, 0x08 }, { 0x5307, 0x16 }, { 0x5309, 0x08 }, { 0x530a, 0x30 }, { 0x530b, 0x04 }, { 0x530c, 0x06 }, { 0x5480, 0x01 }, { 0x5481, 0x08 }, { 0x5482, 0x14 }, { 0x5483, 0x28 }, { 0x5484, 0x51 }, { 0x5485, 0x65 }, { 0x5486, 0x71 }, { 0x5487, 0x7d }, { 0x5488, 0x87 }, { 0x5489, 0x91 }, { 0x548a, 0x9a }, { 0x548b, 0xaa }, { 0x548c, 0xb8 }, { 0x548d, 0xcd }, { 0x548e, 0xdd }, { 0x548f, 0xea }, { 0x5490, 0x1d }, { 0x5580, 0x02 }, { 0x5583, 0x40 }, { 0x5584, 0x10 }, { 0x5589, 0x10 }, { 0x558a, 0x00 }, { 0x558b, 0xf8 }, { 0x5800, 0x3f }, { 0x5801, 0x16 }, { 0x5802, 0x0e }, { 0x5803, 0x0d }, { 0x5804, 0x17 }, { 0x5805, 0x3f }, { 0x5806, 0x0b }, { 0x5807, 0x06 }, { 0x5808, 0x04 }, { 0x5809, 0x04 }, { 0x580a, 0x06 }, { 0x580b, 0x0b }, { 0x580c, 0x09 }, { 0x580d, 0x03 }, { 0x580e, 0x00 }, { 0x580f, 0x00 }, { 0x5810, 0x03 }, { 0x5811, 0x08 }, { 0x5812, 0x0a }, { 0x5813, 0x03 }, { 0x5814, 0x00 }, { 0x5815, 0x00 }, { 0x5816, 0x04 }, { 0x5817, 0x09 }, { 0x5818, 0x0f }, { 0x5819, 0x08 }, { 0x581a, 0x06 }, { 0x581b, 0x06 }, { 0x581c, 0x08 }, { 0x581d, 0x0c }, { 0x581e, 0x3f }, { 0x581f, 0x1e }, { 0x5820, 0x12 }, { 0x5821, 0x13 }, { 0x5822, 0x21 }, { 0x5823, 0x3f }, { 0x5824, 0x68 }, { 0x5825, 0x28 }, { 0x5826, 0x2c }, { 0x5827, 0x28 }, { 0x5828, 0x08 }, { 0x5829, 0x48 }, { 0x582a, 0x64 }, { 0x582b, 0x62 }, { 0x582c, 0x64 }, { 0x582d, 0x28 }, { 0x582e, 0x46 }, { 0x582f, 0x62 }, { 0x5830, 0x60 }, { 0x5831, 0x62 }, { 0x5832, 0x26 }, { 0x5833, 0x48 }, { 0x5834, 0x66 }, { 0x5835, 0x44 }, { 0x5836, 0x64 }, { 0x5837, 0x28 }, { 0x5838, 0x66 }, { 0x5839, 0x48 }, { 0x583a, 0x2c }, { 0x583b, 0x28 }, { 0x583c, 0x26 }, { 0x583d, 0xae }, { 0x5025, 0x00 }, { 0x3a0f, 0x30 }, { 0x3a10, 0x28 }, { 0x3a1b, 0x30 }, { 0x3a1e, 0x26 }, { 0x3a11, 0x60 }, { 0x3a1f, 0x14 }, { 0x0601, 0x02 }, { 0x3008, 0x42 }, { 0x3008, 0x02 } }; static const struct reg_value ov5645_setting_sxga[] = { { 0x3612, 0xa9 }, { 0x3614, 0x50 }, { 0x3618, 0x00 }, { 0x3034, 0x18 }, { 0x3035, 0x21 }, { 0x3036, 0x70 }, { 0x3600, 0x09 }, { 0x3601, 0x43 }, { 0x3708, 0x66 }, { 0x370c, 0xc3 }, { 0x3800, 0x00 }, { 0x3801, 0x00 }, { 0x3802, 0x00 }, { 0x3803, 0x06 }, { 0x3804, 0x0a }, { 0x3805, 0x3f }, { 0x3806, 0x07 }, { 0x3807, 0x9d }, { 0x3808, 0x05 }, { 0x3809, 0x00 }, { 0x380a, 0x03 }, { 0x380b, 0xc0 }, { 0x380c, 0x07 }, { 0x380d, 0x68 }, { 0x380e, 0x03 }, { 0x380f, 0xd8 }, { 0x3813, 0x06 }, { 0x3814, 0x31 }, { 0x3815, 0x31 }, { 0x3820, 0x47 }, { 0x3a02, 0x03 }, { 0x3a03, 0xd8 }, { 0x3a08, 0x01 }, { 0x3a09, 0xf8 }, { 0x3a0a, 0x01 }, { 0x3a0b, 0xa4 }, { 0x3a0e, 0x02 }, { 0x3a0d, 0x02 }, { 0x3a14, 0x03 }, { 0x3a15, 0xd8 }, { 0x3a18, 0x00 }, { 0x4004, 0x02 }, { 0x4005, 0x18 }, { 0x4300, 0x32 }, { 0x4202, 0x00 } }; static const struct reg_value ov5645_setting_1080p[] = { { 0x3612, 0xab }, { 0x3614, 0x50 }, { 0x3618, 0x04 }, { 0x3034, 0x18 }, { 0x3035, 0x11 }, { 0x3036, 0x54 }, { 0x3600, 0x08 }, { 0x3601, 0x33 }, { 0x3708, 0x63 }, { 0x370c, 0xc0 }, { 0x3800, 0x01 }, { 0x3801, 0x50 }, { 0x3802, 0x01 }, { 0x3803, 0xb2 }, { 0x3804, 0x08 }, { 0x3805, 0xef }, { 0x3806, 0x05 }, { 0x3807, 0xf1 }, { 0x3808, 0x07 }, { 0x3809, 0x80 }, { 0x380a, 0x04 }, { 0x380b, 0x38 }, { 0x380c, 0x09 }, { 0x380d, 0xc4 }, { 0x380e, 0x04 }, { 0x380f, 0x60 }, { 0x3813, 0x04 }, { 0x3814, 0x11 }, { 0x3815, 0x11 }, { 0x3820, 0x47 }, { 0x4514, 0x88 }, { 0x3a02, 0x04 }, { 0x3a03, 0x60 }, { 0x3a08, 0x01 }, { 0x3a09, 0x50 }, { 0x3a0a, 0x01 }, { 0x3a0b, 0x18 }, { 0x3a0e, 0x03 }, { 0x3a0d, 0x04 }, { 0x3a14, 0x04 }, { 0x3a15, 0x60 }, { 0x3a18, 0x00 }, { 0x4004, 0x06 }, { 0x4005, 0x18 }, { 0x4300, 0x32 }, { 0x4202, 0x00 }, { 0x4837, 0x0b } }; static const struct reg_value ov5645_setting_full[] = { { 0x3612, 0xab }, { 0x3614, 0x50 }, { 0x3618, 0x04 }, { 0x3034, 0x18 }, { 0x3035, 0x11 }, { 0x3036, 0x54 }, { 0x3600, 0x08 }, { 0x3601, 0x33 }, { 0x3708, 0x63 }, { 0x370c, 0xc0 }, { 0x3800, 0x00 }, { 0x3801, 0x00 }, { 0x3802, 0x00 }, { 0x3803, 0x00 }, { 0x3804, 0x0a }, { 0x3805, 0x3f }, { 0x3806, 0x07 }, { 0x3807, 0x9f }, { 0x3808, 0x0a }, { 0x3809, 0x20 }, { 0x380a, 0x07 }, { 0x380b, 0x98 }, { 0x380c, 0x0b }, { 0x380d, 0x1c }, { 0x380e, 0x07 }, { 0x380f, 0xb0 }, { 0x3813, 0x06 }, { 0x3814, 0x11 }, { 0x3815, 0x11 }, { 0x3820, 0x47 }, { 0x4514, 0x88 }, { 0x3a02, 0x07 }, { 0x3a03, 0xb0 }, { 0x3a08, 0x01 }, { 0x3a09, 0x27 }, { 0x3a0a, 0x00 }, { 0x3a0b, 0xf6 }, { 0x3a0e, 0x06 }, { 0x3a0d, 0x08 }, { 0x3a14, 0x07 }, { 0x3a15, 0xb0 }, { 0x3a18, 0x01 }, { 0x4004, 0x06 }, { 0x4005, 0x18 }, { 0x4300, 0x32 }, { 0x4837, 0x0b }, { 0x4202, 0x00 } }; static const s64 link_freq[] = { 224000000, 336000000 }; static const struct ov5645_mode_info ov5645_mode_info_data[] = { { .width = 1280, .height = 960, .data = ov5645_setting_sxga, .data_size = ARRAY_SIZE(ov5645_setting_sxga), .pixel_clock = 112000000, .link_freq = 0 /* an index in link_freq[] */ }, { .width = 1920, .height = 1080, .data = ov5645_setting_1080p, .data_size = ARRAY_SIZE(ov5645_setting_1080p), .pixel_clock = 168000000, .link_freq = 1 /* an index in link_freq[] */ }, { .width = 2592, .height = 1944, .data = ov5645_setting_full, .data_size = ARRAY_SIZE(ov5645_setting_full), .pixel_clock = 168000000, .link_freq = 1 /* an index in link_freq[] */ }, }; static int ov5645_regulators_enable(struct ov5645 *ov5645) { int ret; ret = regulator_enable(ov5645->io_regulator); if (ret < 0) { dev_err(ov5645->dev, "set io voltage failed\n"); return ret; } ret = regulator_enable(ov5645->analog_regulator); if (ret) { dev_err(ov5645->dev, "set analog voltage failed\n"); goto err_disable_io; } ret = regulator_enable(ov5645->core_regulator); if (ret) { dev_err(ov5645->dev, "set core voltage failed\n"); goto err_disable_analog; } return 0; err_disable_analog: regulator_disable(ov5645->analog_regulator); err_disable_io: regulator_disable(ov5645->io_regulator); return ret; } static void ov5645_regulators_disable(struct ov5645 *ov5645) { int ret; ret = regulator_disable(ov5645->core_regulator); if (ret < 0) dev_err(ov5645->dev, "core regulator disable failed\n"); ret = regulator_disable(ov5645->analog_regulator); if (ret < 0) dev_err(ov5645->dev, "analog regulator disable failed\n"); ret = regulator_disable(ov5645->io_regulator); if (ret < 0) dev_err(ov5645->dev, "io regulator disable failed\n"); } static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val) { u8 regbuf[3]; int ret; regbuf[0] = reg >> 8; regbuf[1] = reg & 0xff; regbuf[2] = val; ret = i2c_master_send(ov5645->i2c_client, regbuf, 3); if (ret < 0) { dev_err(ov5645->dev, "%s: write reg error %d: reg=%x, val=%x\n", __func__, ret, reg, val); return ret; } return 0; } static int ov5645_read_reg(struct ov5645 *ov5645, u16 reg, u8 *val) { u8 regbuf[2]; int ret; regbuf[0] = reg >> 8; regbuf[1] = reg & 0xff; ret = i2c_master_send(ov5645->i2c_client, regbuf, 2); if (ret < 0) { dev_err(ov5645->dev, "%s: write reg error %d: reg=%x\n", __func__, ret, reg); return ret; } ret = i2c_master_recv(ov5645->i2c_client, val, 1); if (ret < 0) { dev_err(ov5645->dev, "%s: read reg error %d: reg=%x\n", __func__, ret, reg); return ret; } return 0; } static int ov5645_set_aec_mode(struct ov5645 *ov5645, u32 mode) { u8 val = ov5645->aec_pk_manual; int ret; if (mode == V4L2_EXPOSURE_AUTO) val &= ~OV5645_AEC_MANUAL_ENABLE; else /* V4L2_EXPOSURE_MANUAL */ val |= OV5645_AEC_MANUAL_ENABLE; ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val); if (!ret) ov5645->aec_pk_manual = val; return ret; } static int ov5645_set_agc_mode(struct ov5645 *ov5645, u32 enable) { u8 val = ov5645->aec_pk_manual; int ret; if (enable) val &= ~OV5645_AGC_MANUAL_ENABLE; else val |= OV5645_AGC_MANUAL_ENABLE; ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val); if (!ret) ov5645->aec_pk_manual = val; return ret; } static int ov5645_set_register_array(struct ov5645 *ov5645, const struct reg_value *settings, unsigned int num_settings) { unsigned int i; int ret; for (i = 0; i < num_settings; ++i, ++settings) { ret = ov5645_write_reg(ov5645, settings->reg, settings->val); if (ret < 0) return ret; } return 0; } static int ov5645_set_power_on(struct ov5645 *ov5645) { int ret; ret = ov5645_regulators_enable(ov5645); if (ret < 0) { return ret; } ret = clk_prepare_enable(ov5645->xclk); if (ret < 0) { dev_err(ov5645->dev, "clk prepare enable failed\n"); ov5645_regulators_disable(ov5645); return ret; } usleep_range(5000, 15000); gpiod_set_value_cansleep(ov5645->enable_gpio, 1); usleep_range(1000, 2000); gpiod_set_value_cansleep(ov5645->rst_gpio, 0); msleep(20); return 0; } static void ov5645_set_power_off(struct ov5645 *ov5645) { gpiod_set_value_cansleep(ov5645->rst_gpio, 1); gpiod_set_value_cansleep(ov5645->enable_gpio, 0); clk_disable_unprepare(ov5645->xclk); ov5645_regulators_disable(ov5645); } static int ov5645_s_power(struct v4l2_subdev *sd, int on) { struct ov5645 *ov5645 = to_ov5645(sd); int ret = 0; mutex_lock(&ov5645->power_lock); /* If the power count is modified from 0 to != 0 or from != 0 to 0, * update the power state. */ if (ov5645->power_count == !on) { if (on) { ret = ov5645_set_power_on(ov5645); if (ret < 0) goto exit; ret = ov5645_set_register_array(ov5645, ov5645_global_init_setting, ARRAY_SIZE(ov5645_global_init_setting)); if (ret < 0) { dev_err(ov5645->dev, "could not set init registers\n"); ov5645_set_power_off(ov5645); goto exit; } ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0, OV5645_SYSTEM_CTRL0_STOP); if (ret < 0) { ov5645_set_power_off(ov5645); goto exit; } } else { ov5645_set_power_off(ov5645); } } /* Update the power count. */ ov5645->power_count += on ? 1 : -1; WARN_ON(ov5645->power_count < 0); exit: mutex_unlock(&ov5645->power_lock); return ret; } static int ov5645_set_saturation(struct ov5645 *ov5645, s32 value) { u32 reg_value = (value * 0x10) + 0x40; int ret; ret = ov5645_write_reg(ov5645, OV5645_SDE_SAT_U, reg_value); if (ret < 0) return ret; return ov5645_write_reg(ov5645, OV5645_SDE_SAT_V, reg_value); } static int ov5645_set_hflip(struct ov5645 *ov5645, s32 value) { u8 val = ov5645->timing_tc_reg21; int ret; if (value == 0) val &= ~(OV5645_SENSOR_MIRROR); else val |= (OV5645_SENSOR_MIRROR); ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG21, val); if (!ret) ov5645->timing_tc_reg21 = val; return ret; } static int ov5645_set_vflip(struct ov5645 *ov5645, s32 value) { u8 val = ov5645->timing_tc_reg20; int ret; if (value == 0) val |= (OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP); else val &= ~(OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP); ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG20, val); if (!ret) ov5645->timing_tc_reg20 = val; return ret; } static int ov5645_set_test_pattern(struct ov5645 *ov5645, s32 value) { u8 val = 0; if (value) { val = OV5645_SET_TEST_PATTERN(value - 1); val |= OV5645_TEST_PATTERN_ENABLE; } return ov5645_write_reg(ov5645, OV5645_PRE_ISP_TEST_SETTING_1, val); } static const char * const ov5645_test_pattern_menu[] = { "Disabled", "Vertical Color Bars", "Pseudo-Random Data", "Color Square", "Black Image", }; static int ov5645_set_awb(struct ov5645 *ov5645, s32 enable_auto) { u8 val = 0; if (!enable_auto) val = OV5645_AWB_MANUAL_ENABLE; return ov5645_write_reg(ov5645, OV5645_AWB_MANUAL_CONTROL, val); } static int ov5645_s_ctrl(struct v4l2_ctrl *ctrl) { struct ov5645 *ov5645 = container_of(ctrl->handler, struct ov5645, ctrls); int ret; mutex_lock(&ov5645->power_lock); if (!ov5645->power_count) { mutex_unlock(&ov5645->power_lock); return 0; } switch (ctrl->id) { case V4L2_CID_SATURATION: ret = ov5645_set_saturation(ov5645, ctrl->val); break; case V4L2_CID_AUTO_WHITE_BALANCE: ret = ov5645_set_awb(ov5645, ctrl->val); break; case V4L2_CID_AUTOGAIN: ret = ov5645_set_agc_mode(ov5645, ctrl->val); break; case V4L2_CID_EXPOSURE_AUTO: ret = ov5645_set_aec_mode(ov5645, ctrl->val); break; case V4L2_CID_TEST_PATTERN: ret = ov5645_set_test_pattern(ov5645, ctrl->val); break; case V4L2_CID_HFLIP: ret = ov5645_set_hflip(ov5645, ctrl->val); break; case V4L2_CID_VFLIP: ret = ov5645_set_vflip(ov5645, ctrl->val); break; default: ret = -EINVAL; break; } mutex_unlock(&ov5645->power_lock); return ret; } static struct v4l2_ctrl_ops ov5645_ctrl_ops = { .s_ctrl = ov5645_s_ctrl, }; static int ov5645_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { if (code->index > 0) return -EINVAL; code->code = MEDIA_BUS_FMT_UYVY8_2X8; return 0; } static int ov5645_enum_frame_size(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { if (fse->code != MEDIA_BUS_FMT_UYVY8_2X8) return -EINVAL; if (fse->index >= ARRAY_SIZE(ov5645_mode_info_data)) return -EINVAL; fse->min_width = ov5645_mode_info_data[fse->index].width; fse->max_width = ov5645_mode_info_data[fse->index].width; fse->min_height = ov5645_mode_info_data[fse->index].height; fse->max_height = ov5645_mode_info_data[fse->index].height; return 0; } static struct v4l2_mbus_framefmt * __ov5645_get_pad_format(struct ov5645 *ov5645, struct v4l2_subdev_pad_config *cfg, unsigned int pad, enum v4l2_subdev_format_whence which) { switch (which) { case V4L2_SUBDEV_FORMAT_TRY: return v4l2_subdev_get_try_format(&ov5645->sd, cfg, pad); case V4L2_SUBDEV_FORMAT_ACTIVE: return &ov5645->fmt; default: return NULL; } } static int ov5645_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct ov5645 *ov5645 = to_ov5645(sd); format->format = *__ov5645_get_pad_format(ov5645, cfg, format->pad, format->which); return 0; } static struct v4l2_rect * __ov5645_get_pad_crop(struct ov5645 *ov5645, struct v4l2_subdev_pad_config *cfg, unsigned int pad, enum v4l2_subdev_format_whence which) { switch (which) { case V4L2_SUBDEV_FORMAT_TRY: return v4l2_subdev_get_try_crop(&ov5645->sd, cfg, pad); case V4L2_SUBDEV_FORMAT_ACTIVE: return &ov5645->crop; default: return NULL; } } static int ov5645_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct ov5645 *ov5645 = to_ov5645(sd); struct v4l2_mbus_framefmt *__format; struct v4l2_rect *__crop; const struct ov5645_mode_info *new_mode; int ret; __crop = __ov5645_get_pad_crop(ov5645, cfg, format->pad, format->which); new_mode = v4l2_find_nearest_size(ov5645_mode_info_data, ARRAY_SIZE(ov5645_mode_info_data), width, height, format->format.width, format->format.height); __crop->width = new_mode->width; __crop->height = new_mode->height; if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) { ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock, new_mode->pixel_clock); if (ret < 0) return ret; ret = v4l2_ctrl_s_ctrl(ov5645->link_freq, new_mode->link_freq); if (ret < 0) return ret; ov5645->current_mode = new_mode; } __format = __ov5645_get_pad_format(ov5645, cfg, format->pad, format->which); __format->width = __crop->width; __format->height = __crop->height; __format->code = MEDIA_BUS_FMT_UYVY8_2X8; __format->field = V4L2_FIELD_NONE; __format->colorspace = V4L2_COLORSPACE_SRGB; format->format = *__format; return 0; } static int ov5645_entity_init_cfg(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg) { struct v4l2_subdev_format fmt = { 0 }; fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; fmt.format.width = 1920; fmt.format.height = 1080; ov5645_set_format(subdev, cfg, &fmt); return 0; } static int ov5645_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_selection *sel) { struct ov5645 *ov5645 = to_ov5645(sd); if (sel->target != V4L2_SEL_TGT_CROP) return -EINVAL; sel->r = *__ov5645_get_pad_crop(ov5645, cfg, sel->pad, sel->which); return 0; } static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable) { struct ov5645 *ov5645 = to_ov5645(subdev); int ret; if (enable) { ret = ov5645_set_register_array(ov5645, ov5645->current_mode->data, ov5645->current_mode->data_size); if (ret < 0) { dev_err(ov5645->dev, "could not set mode %dx%d\n", ov5645->current_mode->width, ov5645->current_mode->height); return ret; } ret = v4l2_ctrl_handler_setup(&ov5645->ctrls); if (ret < 0) { dev_err(ov5645->dev, "could not sync v4l2 controls\n"); return ret; } ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0, OV5645_SYSTEM_CTRL0_START); if (ret < 0) return ret; } else { ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0, OV5645_SYSTEM_CTRL0_STOP); if (ret < 0) return ret; } return 0; } static const struct v4l2_subdev_core_ops ov5645_core_ops = { .s_power = ov5645_s_power, }; static const struct v4l2_subdev_video_ops ov5645_video_ops = { .s_stream = ov5645_s_stream, }; static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = { .init_cfg = ov5645_entity_init_cfg, .enum_mbus_code = ov5645_enum_mbus_code, .enum_frame_size = ov5645_enum_frame_size, .get_fmt = ov5645_get_format, .set_fmt = ov5645_set_format, .get_selection = ov5645_get_selection, }; static const struct v4l2_subdev_ops ov5645_subdev_ops = { .core = &ov5645_core_ops, .video = &ov5645_video_ops, .pad = &ov5645_subdev_pad_ops, }; static int ov5645_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *endpoint; struct ov5645 *ov5645; u8 chip_id_high, chip_id_low; u32 xclk_freq; int ret; ov5645 = devm_kzalloc(dev, sizeof(struct ov5645), GFP_KERNEL); if (!ov5645) return -ENOMEM; ov5645->i2c_client = client; ov5645->dev = dev; endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); if (!endpoint) { dev_err(dev, "endpoint node not found\n"); return -EINVAL; } ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), &ov5645->ep); of_node_put(endpoint); if (ret < 0) { dev_err(dev, "parsing endpoint node failed\n"); return ret; } if (ov5645->ep.bus_type != V4L2_MBUS_CSI2_DPHY) { dev_err(dev, "invalid bus type, must be CSI2\n"); return -EINVAL; } /* get system clock (xclk) */ ov5645->xclk = devm_clk_get(dev, "xclk"); if (IS_ERR(ov5645->xclk)) { dev_err(dev, "could not get xclk"); return PTR_ERR(ov5645->xclk); } ret = of_property_read_u32(dev->of_node, "clock-frequency", &xclk_freq); if (ret) { dev_err(dev, "could not get xclk frequency\n"); return ret; } /* external clock must be 24MHz, allow 1% tolerance */ if (xclk_freq < 23760000 || xclk_freq > 24240000) { dev_err(dev, "external clock frequency %u is not supported\n", xclk_freq); return -EINVAL; } ret = clk_set_rate(ov5645->xclk, xclk_freq); if (ret) { dev_err(dev, "could not set xclk frequency\n"); return ret; } ov5645->io_regulator = devm_regulator_get(dev, "vdddo"); if (IS_ERR(ov5645->io_regulator)) { dev_err(dev, "cannot get io regulator\n"); return PTR_ERR(ov5645->io_regulator); } ret = regulator_set_voltage(ov5645->io_regulator, OV5645_VOLTAGE_DIGITAL_IO, OV5645_VOLTAGE_DIGITAL_IO); if (ret < 0) { dev_err(dev, "cannot set io voltage\n"); return ret; } ov5645->core_regulator = devm_regulator_get(dev, "vddd"); if (IS_ERR(ov5645->core_regulator)) { dev_err(dev, "cannot get core regulator\n"); return PTR_ERR(ov5645->core_regulator); } ret = regulator_set_voltage(ov5645->core_regulator, OV5645_VOLTAGE_DIGITAL_CORE, OV5645_VOLTAGE_DIGITAL_CORE); if (ret < 0) { dev_err(dev, "cannot set core voltage\n"); return ret; } ov5645->analog_regulator = devm_regulator_get(dev, "vdda"); if (IS_ERR(ov5645->analog_regulator)) { dev_err(dev, "cannot get analog regulator\n"); return PTR_ERR(ov5645->analog_regulator); } ret = regulator_set_voltage(ov5645->analog_regulator, OV5645_VOLTAGE_ANALOG, OV5645_VOLTAGE_ANALOG); if (ret < 0) { dev_err(dev, "cannot set analog voltage\n"); return ret; } ov5645->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH); if (IS_ERR(ov5645->enable_gpio)) { dev_err(dev, "cannot get enable gpio\n"); return PTR_ERR(ov5645->enable_gpio); } ov5645->rst_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(ov5645->rst_gpio)) { dev_err(dev, "cannot get reset gpio\n"); return PTR_ERR(ov5645->rst_gpio); } mutex_init(&ov5645->power_lock); v4l2_ctrl_handler_init(&ov5645->ctrls, 9); v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_SATURATION, -4, 4, 1, 0); v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); v4l2_ctrl_new_std_menu(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO); v4l2_ctrl_new_std_menu_items(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov5645_test_pattern_menu) - 1, 0, 0, ov5645_test_pattern_menu); ov5645->pixel_clock = v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); ov5645->link_freq = v4l2_ctrl_new_int_menu(&ov5645->ctrls, &ov5645_ctrl_ops, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq) - 1, 0, link_freq); if (ov5645->link_freq) ov5645->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; ov5645->sd.ctrl_handler = &ov5645->ctrls; if (ov5645->ctrls.error) { dev_err(dev, "%s: control initialization error %d\n", __func__, ov5645->ctrls.error); ret = ov5645->ctrls.error; goto free_ctrl; } v4l2_i2c_subdev_init(&ov5645->sd, client, &ov5645_subdev_ops); ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ov5645->pad.flags = MEDIA_PAD_FL_SOURCE; ov5645->sd.dev = &client->dev; ov5645->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&ov5645->sd.entity, 1, &ov5645->pad); if (ret < 0) { dev_err(dev, "could not register media entity\n"); goto free_ctrl; } ret = ov5645_s_power(&ov5645->sd, true); if (ret < 0) { dev_err(dev, "could not power up OV5645\n"); goto free_entity; } ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_HIGH, &chip_id_high); if (ret < 0 || chip_id_high != OV5645_CHIP_ID_HIGH_BYTE) { dev_err(dev, "could not read ID high\n"); ret = -ENODEV; goto power_down; } ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_LOW, &chip_id_low); if (ret < 0 || chip_id_low != OV5645_CHIP_ID_LOW_BYTE) { dev_err(dev, "could not read ID low\n"); ret = -ENODEV; goto power_down; } dev_info(dev, "OV5645 detected at address 0x%02x\n", client->addr); ret = ov5645_read_reg(ov5645, OV5645_AEC_PK_MANUAL, &ov5645->aec_pk_manual); if (ret < 0) { dev_err(dev, "could not read AEC/AGC mode\n"); ret = -ENODEV; goto power_down; } ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG20, &ov5645->timing_tc_reg20); if (ret < 0) { dev_err(dev, "could not read vflip value\n"); ret = -ENODEV; goto power_down; } ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG21, &ov5645->timing_tc_reg21); if (ret < 0) { dev_err(dev, "could not read hflip value\n"); ret = -ENODEV; goto power_down; } ov5645_s_power(&ov5645->sd, false); ret = v4l2_async_register_subdev(&ov5645->sd); if (ret < 0) { dev_err(dev, "could not register v4l2 device\n"); goto free_entity; } ov5645_entity_init_cfg(&ov5645->sd, NULL); return 0; power_down: ov5645_s_power(&ov5645->sd, false); free_entity: media_entity_cleanup(&ov5645->sd.entity); free_ctrl: v4l2_ctrl_handler_free(&ov5645->ctrls); mutex_destroy(&ov5645->power_lock); return ret; } static int ov5645_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov5645 *ov5645 = to_ov5645(sd); v4l2_async_unregister_subdev(&ov5645->sd); media_entity_cleanup(&ov5645->sd.entity); v4l2_ctrl_handler_free(&ov5645->ctrls); mutex_destroy(&ov5645->power_lock); return 0; } static const struct i2c_device_id ov5645_id[] = { { "ov5645", 0 }, {} }; MODULE_DEVICE_TABLE(i2c, ov5645_id); static const struct of_device_id ov5645_of_match[] = { { .compatible = "ovti,ov5645" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, ov5645_of_match); static struct i2c_driver ov5645_i2c_driver = { .driver = { .of_match_table = of_match_ptr(ov5645_of_match), .name = "ov5645", }, .probe = ov5645_probe, .remove = ov5645_remove, .id_table = ov5645_id, }; module_i2c_driver(ov5645_i2c_driver); MODULE_DESCRIPTION("Omnivision OV5645 Camera Driver"); MODULE_AUTHOR("Todor Tomov "); MODULE_LICENSE("GPL v2");