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Message-Id: <1491910126-15630-1-git-send-email-todor.tomov@linaro.org>
Date: Tue, 11 Apr 2017 14:28:46 +0300
From: Todor Tomov <todor.tomov@...aro.org>
To: mchehab@...nel.org, laurent.pinchart@...asonboard.com,
hans.verkuil@...co.com, sakari.ailus@....fi,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Todor Tomov <todor.tomov@...aro.org>
Subject: [PATCH v9 2/2] media: Add a driver for the ov5645 camera sensor.
The ov5645 sensor from Omnivision supports up to 2592x1944
and CSI2 interface.
The driver adds support for the following modes:
- 1280x960
- 1920x1080
- 2592x1944
Output format is packed 8bit UYVY.
Signed-off-by: Todor Tomov <todor.tomov@...aro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
---
drivers/media/i2c/Kconfig | 12 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ov5645.c | 1345 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1358 insertions(+)
create mode 100644 drivers/media/i2c/ov5645.c
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index cee1dae..be4ded8 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -531,6 +531,18 @@ config VIDEO_OV2659
To compile this driver as a module, choose M here: the
module will be called ov2659.
+config VIDEO_OV5645
+ tristate "OmniVision OV5645 sensor support"
+ depends on OF
+ depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ depends on MEDIA_CAMERA_SUPPORT
+ ---help---
+ This is a Video4Linux2 sensor-level driver for the OmniVision
+ OV5645 camera.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ov5645.
+
config VIDEO_OV7640
tristate "OmniVision OV7640 sensor support"
depends on I2C && VIDEO_V4L2
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 5bc7bbe..8b0b8ca 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -57,6 +57,7 @@ obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o
obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o
obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
+obj-$(CONFIG_VIDEO_OV5645) += ov5645.o
obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
new file mode 100644
index 0000000..57bd591
--- /dev/null
+++ b/drivers/media/i2c/ov5645.c
@@ -0,0 +1,1345 @@
+/*
+ * 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 <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-of.h>
+#include <media/v4l2-subdev.h>
+
+#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;
+};
+
+struct ov5645 {
+ struct i2c_client *i2c_client;
+ struct device *dev;
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+ struct v4l2_of_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;
+
+ /* 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 struct ov5645_mode_info ov5645_mode_info_data[] = {
+ {
+ .width = 1280,
+ .height = 960,
+ .data = ov5645_setting_sxga,
+ .data_size = ARRAY_SIZE(ov5645_setting_sxga)
+ },
+ {
+ .width = 1920,
+ .height = 1080,
+ .data = ov5645_setting_1080p,
+ .data_size = ARRAY_SIZE(ov5645_setting_1080p)
+ },
+ {
+ .width = 2592,
+ .height = 1944,
+ .data = ov5645_setting_full,
+ .data_size = ARRAY_SIZE(ov5645_setting_full)
+ },
+};
+
+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;
+}
+
+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 const struct ov5645_mode_info *
+ov5645_find_nearest_mode(unsigned int width, unsigned int height)
+{
+ int i;
+
+ for (i = ARRAY_SIZE(ov5645_mode_info_data) - 1; i >= 0; i--) {
+ if (ov5645_mode_info_data[i].width <= width &&
+ ov5645_mode_info_data[i].height <= height)
+ break;
+ }
+
+ if (i < 0)
+ i = 0;
+
+ return &ov5645_mode_info_data[i];
+}
+
+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;
+
+ __crop = __ov5645_get_pad_crop(ov5645, cfg, format->pad,
+ format->which);
+
+ new_mode = ov5645_find_nearest_mode(format->format.width,
+ format->format.height);
+ __crop->width = new_mode->width;
+ __crop->height = new_mode->height;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ 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_of_parse_endpoint(endpoint, &ov5645->ep);
+ if (ret < 0) {
+ dev_err(dev, "parsing endpoint node failed\n");
+ return ret;
+ }
+
+ of_node_put(endpoint);
+
+ if (ov5645->ep.bus_type != V4L2_MBUS_CSI2) {
+ 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;
+ }
+
+ if (xclk_freq != 23880000) {
+ 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, 7);
+ 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->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;
+
+ 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 <todor.tomov@...aro.org>");
+MODULE_LICENSE("GPL v2");
--
1.9.1
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