v4l: Add support for ov5650 sensor

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>

5 files changed, 542 insertions, 0 deletions

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 74ad8ef1ef5..d56ad76d28b 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -473,6 +473,12 @@ config VIDEO_OV5640
 	help
 	  This is a ov5640 camera driver
 
+config VIDEO_OV5650
+	tristate "OmniVision OV5650 sensor support"
+	depends on I2C && VIDEO_V4L2
+	help
+	  This is a ov5650 camera driver
+
 config VIDEO_MT9P031
 	tristate "Aptina MT9P031 support"
 	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 0f27730de97..539f128622a 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
 obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
 obj-$(CONFIG_VIDEO_OV7670) 	+= ov7670.o
 obj-$(CONFIG_VIDEO_OV5640)	+= ov5640.o
+obj-$(CONFIG_VIDEO_OV5650)	+= ov5650.o
 obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
 obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
 obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
diff --git a/drivers/media/video/ov5650.c b/drivers/media/video/ov5650.c
new file mode 100644
index 00000000000..092d8bfad26
--- /dev/null
+++ b/drivers/media/video/ov5650.c
@@ -0,0 +1,524 @@
+/*
+ * OmniVision OV5650 sensor driver
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/log2.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#include <media/ov5650.h>
+
+/* OV5650 has only one fixed colorspace per pixelcode */
+struct ov5650_datafmt {
+	enum v4l2_mbus_pixelcode	code;
+	enum v4l2_colorspace		colorspace;
+};
+
+enum ov5650_size {
+	OV5650_SIZE_5MP,
+	OV5650_SIZE_LAST,
+};
+
+static const struct v4l2_frmsize_discrete ov5650_frmsizes[OV5650_SIZE_LAST] = {
+	{ 2592, 1944 },
+};
+
+struct ov5650 {
+	struct v4l2_subdev subdev;
+	struct media_pad pad;
+
+	struct v4l2_mbus_framefmt format;
+
+	const struct ov5650_platform_data *pdata;
+};
+
+static inline struct ov5650 *to_ov5650(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct ov5650, subdev);
+}
+
+/**
+ * struct ov5650_reg - ov5650 register format
+ * @reg: 16-bit offset to register
+ * @val: 8/16/32-bit register value
+ * @length: length of the register
+ *
+ * Define a structure for OV5650 register initialization values
+ */
+struct ov5650_reg {
+	u16	reg;
+	u8	val;
+};
+
+/* TODO: Divide this properly */
+static const struct ov5650_reg configscript_5MP[] = {
+	{ 0x3008, 0x82 },
+	{ 0x3008, 0x42 },
+	{ 0x3103, 0x93 },
+	{ 0x3b07, 0x0c },
+	{ 0x3017, 0xff },
+	{ 0x3018, 0xfc },
+	{ 0x3706, 0x41 },
+	{ 0x3703, 0xe6 },
+	{ 0x3613, 0x44 },
+	{ 0x3630, 0x22 },
+	{ 0x3605, 0x04 },
+	{ 0x3606, 0x3f },
+	{ 0x3712, 0x13 },
+	{ 0x370e, 0x00 },
+	{ 0x370b, 0x40 },
+	{ 0x3600, 0x54 },
+	{ 0x3601, 0x05 },
+	{ 0x3713, 0x22 },
+	{ 0x3714, 0x27 },
+	{ 0x3631, 0x22 },
+	{ 0x3612, 0x1a },
+	{ 0x3604, 0x40 },
+	{ 0x3705, 0xda },
+	{ 0x370a, 0x80 },
+	{ 0x370c, 0x00 },
+	{ 0x3710, 0x28 },
+	{ 0x3702, 0x3a },
+	{ 0x3704, 0x18 },
+	{ 0x3a18, 0x00 },
+	{ 0x3a19, 0xf8 },
+	{ 0x3a00, 0x38 },
+	{ 0x3800, 0x02 },
+	{ 0x3801, 0x54 },
+	{ 0x3803, 0x0c },
+	{ 0x3808, 0x0a },
+	{ 0x3809, 0x20 },
+	{ 0x380a, 0x07 },
+	{ 0x380b, 0x98 },
+	{ 0x380c, 0x0c },
+	{ 0x380d, 0xb4 },
+	{ 0x380e, 0x07 },
+	{ 0x380f, 0xb0 },
+	{ 0x3830, 0x50 },
+	{ 0x3a08, 0x12 },
+	{ 0x3a09, 0x70 },
+	{ 0x3a0a, 0x0f },
+	{ 0x3a0b, 0x60 },
+	{ 0x3a0d, 0x06 },
+	{ 0x3a0e, 0x06 },
+	{ 0x3a13, 0x54 },
+	{ 0x3815, 0x82 },
+	{ 0x5059, 0x80 },
+	{ 0x505a, 0x0a },
+	{ 0x505b, 0x2e },
+	{ 0x3a1a, 0x06 },
+	{ 0x3503, 0x00 },
+	{ 0x3623, 0x01 },
+	{ 0x3633, 0x24 },
+	{ 0x3c01, 0x34 },
+	{ 0x3c04, 0x28 },
+	{ 0x3c05, 0x98 },
+	{ 0x3c07, 0x07 },
+	{ 0x3c09, 0xc2 },
+	{ 0x4000, 0x05 },
+	{ 0x401d, 0x28 },
+	{ 0x4001, 0x02 },
+	{ 0x401c, 0x46 },
+	{ 0x5046, 0x01 },
+	{ 0x3810, 0x40 },
+	{ 0x3836, 0x41 },
+	{ 0x505f, 0x04 },
+	{ 0x5000, 0x00 },
+	{ 0x5001, 0x00 },
+	{ 0x5002, 0x00 },
+	{ 0x503d, 0x00 },
+	{ 0x5901, 0x00 },
+	{ 0x585a, 0x01 },
+	{ 0x585b, 0x2c },
+	{ 0x585c, 0x01 },
+	{ 0x585d, 0x93 },
+	{ 0x585e, 0x01 },
+	{ 0x585f, 0x90 },
+	{ 0x5860, 0x01 },
+	{ 0x5861, 0x0d },
+	{ 0x5180, 0xc0 },
+	{ 0x5184, 0x00 },
+	{ 0x470a, 0x00 },
+	{ 0x470b, 0x00 },
+	{ 0x470c, 0x00 },
+	{ 0x300f, 0x8e },
+	{ 0x3603, 0xa7 },
+	{ 0x3615, 0x50 },
+	{ 0x3632, 0x55 },
+	{ 0x3620, 0x56 },
+	{ 0x3621, 0x2f },
+	{ 0x381a, 0x3c },
+	{ 0x3818, 0xc0 },
+	{ 0x3631, 0x36 },
+	{ 0x3632, 0x5f },
+	{ 0x3711, 0x24 },
+	{ 0x401f, 0x03 },
+	{ 0x3011, 0x14 },
+	{ 0x3007, 0x3b },
+	{ 0x4801, 0x0f },
+	{ 0x3003, 0x03 },
+	{ 0x300e, 0x0c },
+	{ 0x4803, 0x50 },
+	{ 0x4800, 0x04 },
+	{ 0x300f, 0x8f },
+	{ 0x3815, 0x82 },
+	{ 0x3003, 0x01 },
+	{ 0x3008, 0x02 },
+};
+
+/**
+ * ov5650_reg_read - Read a value from a register in an ov5650 sensor device
+ * @client: i2c driver client structure
+ * @reg: register address / offset
+ * @val: stores the value that gets read
+ *
+ * Read a value from a register in an ov5650 sensor device.
+ * The value is returned in 'val'.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int ov5650_reg_read(struct i2c_client *client, u16 reg, u8 *val)
+{
+	int ret;
+	u8 data[2] = {0};
+	struct i2c_msg msg = {
+		.addr	= client->addr,
+		.flags	= 0,
+		.len	= 2,
+		.buf	= data,
+	};
+
+	data[0] = (u8)(reg >> 8);
+	data[1] = (u8)(reg & 0xff);
+
+	ret = i2c_transfer(client->adapter, &msg, 1);
+	if (ret < 0)
+		goto err;
+
+	msg.flags = I2C_M_RD;
+	msg.len = 1;
+	ret = i2c_transfer(client->adapter, &msg, 1);
+	if (ret < 0)
+		goto err;
+
+	*val = data[0];
+	return 0;
+
+err:
+	dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg);
+	return ret;
+}
+
+/**
+ * Write a value to a register in ov5650 sensor device.
+ * @client: i2c driver client structure.
+ * @reg: Address of the register to read value from.
+ * @val: Value to be written to a specific register.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int ov5650_reg_write(struct i2c_client *client, u16 reg, u8 val)
+{
+	int ret;
+	unsigned char data[3] = { (u8)(reg >> 8), (u8)(reg & 0xff), val };
+	struct i2c_msg msg = {
+		.addr	= client->addr,
+		.flags	= 0,
+		.len	= 3,
+		.buf	= data,
+	};
+
+	ret = i2c_transfer(client->adapter, &msg, 1);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed writing register 0x%02x!\n", reg);
+		return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * Initialize a list of ov5650 registers.
+ * The list of registers is terminated by the pair of values
+ * @client: i2c driver client structure.
+ * @reglist[]: List of address of the registers to write data.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int ov5650_reg_writes(struct i2c_client *client,
+			     const struct ov5650_reg reglist[],
+			     int size)
+{
+	int err = 0, i;
+
+	for (i = 0; i < size; i++) {
+		err = ov5650_reg_write(client, reglist[i].reg,
+				reglist[i].val);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+static struct v4l2_mbus_framefmt *
+__ov5650_get_pad_format(struct ov5650 *ov5650, struct v4l2_subdev_fh *fh,
+			 unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+	switch (which) {
+	case V4L2_SUBDEV_FORMAT_TRY:
+		return v4l2_subdev_get_try_format(fh, pad);
+	case V4L2_SUBDEV_FORMAT_ACTIVE:
+		return &ov5650->format;
+	default:
+		return NULL;
+	}
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 subdev internal operations
+ */
+
+static int ov5650_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct ov5650 *ov5650 = to_ov5650(sd);
+
+	return ov5650->pdata->s_power(sd, on);
+}
+
+static int ov5650_registered(struct v4l2_subdev *subdev)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(subdev);
+	int ret = 0;
+	u8 revision = 0;
+
+	ret = ov5650_s_power(subdev, 1);
+	if (ret < 0) {
+		dev_err(&client->dev, "OV5650 power up failed\n");
+		return ret;
+	}
+
+	ret = ov5650_reg_read(client, 0x302A, &revision);
+	if (ret) {
+		dev_err(&client->dev, "Failure to detect OV5650 chip\n");
+		goto out;
+	}
+
+	revision &= 0xF;
+
+	dev_info(&client->dev, "Detected a OV5650 chip, revision %x\n",
+		 revision);
+
+out:
+	ov5650_s_power(subdev, 0);
+
+	return ret;
+}
+
+static int ov5650_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
+{
+	struct v4l2_mbus_framefmt *format;
+
+	format = v4l2_subdev_get_try_format(fh, 0);
+	format->code = V4L2_MBUS_FMT_SGRBG10_1X10;
+	format->width = ov5650_frmsizes[OV5650_SIZE_5MP].width;
+	format->height = ov5650_frmsizes[OV5650_SIZE_5MP].height;
+	format->field = V4L2_FIELD_NONE;
+	format->colorspace = V4L2_COLORSPACE_SRGB;
+
+	return 0;
+}
+
+static int ov5650_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
+{
+	return 0;
+}
+
+static int ov5650_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret = 0;
+
+	if (enable) {
+		/* HACK: Hardcoding to 5MP! */
+		ret = ov5650_reg_writes(client, configscript_5MP,
+				ARRAY_SIZE(configscript_5MP));
+	}
+
+	return ret;
+}
+
+static int ov5650_g_fmt(struct v4l2_subdev *sd,
+			struct v4l2_subdev_fh *fh,
+			struct v4l2_subdev_format *format)
+{
+	struct ov5650 *ov5650 = to_ov5650(sd);
+
+	format->format = *__ov5650_get_pad_format(ov5650, fh, format->pad,
+						   format->which);
+
+	return 0;
+}
+
+static int ov5650_s_fmt(struct v4l2_subdev *sd,
+			struct v4l2_subdev_fh *fh,
+			struct v4l2_subdev_format *format)
+{
+	struct ov5650 *ov5650 = to_ov5650(sd);
+	struct v4l2_mbus_framefmt *__format;
+
+	__format = __ov5650_get_pad_format(ov5650, fh, format->pad,
+					    format->which);
+
+	/* FIXME: Do an actual change! */
+	format->format = *__format;
+
+	return 0;
+}
+
+static struct v4l2_subdev_internal_ops ov5650_subdev_internal_ops = {
+	.registered = ov5650_registered,
+	.open = ov5650_open,
+	.close = ov5650_close,
+};
+
+static int ov5650_enum_fmt(struct v4l2_subdev *subdev,
+			   struct v4l2_subdev_fh *fh,
+			   struct v4l2_subdev_mbus_code_enum *code)
+{
+	if (code->index > 0)
+		return -EINVAL;
+
+	code->code = V4L2_MBUS_FMT_SGRBG10_1X10;
+	return 0;
+}
+
+static int ov5650_enum_framesizes(struct v4l2_subdev *subdev,
+				   struct v4l2_subdev_fh *fh,
+				   struct v4l2_subdev_frame_size_enum *fse)
+{
+	if (fse->index >= 1 || fse->code != V4L2_MBUS_FMT_SGRBG10_1X10)
+		return -EINVAL;
+
+	fse->min_width = ov5650_frmsizes[fse->index].width;
+	fse->max_width = fse->min_width;
+	fse->min_height = ov5650_frmsizes[fse->index].height;
+	fse->max_height = fse->min_height;
+
+	return 0;
+}
+
+static struct v4l2_subdev_core_ops ov5650_subdev_core_ops = {
+	.s_power	= ov5650_s_power,
+};
+
+static struct v4l2_subdev_video_ops ov5650_subdev_video_ops = {
+	.s_stream	= ov5650_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops ov5650_subdev_pad_ops = {
+	.enum_mbus_code = ov5650_enum_fmt,
+	.enum_frame_size = ov5650_enum_framesizes,
+	.get_fmt = ov5650_g_fmt,
+	.set_fmt = ov5650_s_fmt,
+};
+
+static struct v4l2_subdev_ops ov5650_subdev_ops = {
+	.core	= &ov5650_subdev_core_ops,
+	.video	= &ov5650_subdev_video_ops,
+	.pad	= &ov5650_subdev_pad_ops,
+};
+
+static int ov5650_probe(struct i2c_client *client,
+			 const struct i2c_device_id *did)
+{
+	struct ov5650 *ov5650;
+	int ret;
+
+	if (!client->dev.platform_data) {
+		dev_err(&client->dev, "No platform data!!\n");
+		return -ENODEV;
+	}
+
+	ov5650 = kzalloc(sizeof(*ov5650), GFP_KERNEL);
+	if (!ov5650)
+		return -ENOMEM;
+
+	ov5650->pdata = client->dev.platform_data;
+
+	ov5650->format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
+	ov5650->format.width = ov5650_frmsizes[OV5650_SIZE_5MP].width;
+	ov5650->format.height = ov5650_frmsizes[OV5650_SIZE_5MP].height;
+	ov5650->format.field = V4L2_FIELD_NONE;
+	ov5650->format.colorspace = V4L2_COLORSPACE_SRGB;
+
+	v4l2_i2c_subdev_init(&ov5650->subdev, client, &ov5650_subdev_ops);
+	ov5650->subdev.internal_ops = &ov5650_subdev_internal_ops;
+	ov5650->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+	ov5650->pad.flags = MEDIA_PAD_FL_SOURCE;
+	ret = media_entity_init(&ov5650->subdev.entity, 1, &ov5650->pad, 0);
+
+	if (ret < 0) {
+		media_entity_cleanup(&ov5650->subdev.entity);
+		kfree(ov5650);
+	}
+
+	return ret;
+}
+
+static int ov5650_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+	struct ov5650 *ov5650 = to_ov5650(subdev);
+
+	v4l2_device_unregister_subdev(subdev);
+	media_entity_cleanup(&subdev->entity);
+	kfree(ov5650);
+	return 0;
+}
+
+static const struct i2c_device_id ov5650_id[] = {
+	{ "ov5650", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ov5650_id);
+
+static struct i2c_driver ov5650_i2c_driver = {
+	.driver = {
+		.name = "ov5650",
+	},
+	.probe		= ov5650_probe,
+	.remove		= ov5650_remove,
+	.id_table	= ov5650_id,
+};
+
+static int __init ov5650_mod_init(void)
+{
+	return i2c_add_driver(&ov5650_i2c_driver);
+}
+
+static void __exit ov5650_mod_exit(void)
+{
+	i2c_del_driver(&ov5650_i2c_driver);
+}
+
+module_init(ov5650_mod_init);
+module_exit(ov5650_mod_exit);
+
+MODULE_DESCRIPTION("OmniVision OV5650 Camera driver");
+MODULE_AUTHOR("Sergio Aguirre <saaguirre@ti.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/media/ov5650.h b/include/media/ov5650.h
new file mode 100644
index 00000000000..287f20f51bd
--- /dev/null
+++ b/include/media/ov5650.h
@@ -0,0 +1,10 @@
+#ifndef _MEDIA_OV5650_H
+#define _MEDIA_OV5650_H
+
+#include <media/v4l2-subdev.h>
+
+struct ov5650_platform_data {
+      int (*s_power)(struct v4l2_subdev *subdev, int on);
+};
+
+#endif
diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h
index fb929eacd2e..a0d15e57cc6 100644
--- a/include/media/v4l2-chip-ident.h
+++ b/include/media/v4l2-chip-ident.h
@@ -78,6 +78,7 @@ enum {
 	V4L2_IDENT_OV9740 = 260,
 	V4L2_IDENT_OV5642 = 261,
 	V4L2_IDENT_OV5640 = 262,
+	V4L2_IDENT_OV5650 = 263,
 
 	/* module saa7146: reserved range 300-309 */
 	V4L2_IDENT_SAA7146 = 300,