[media] move soc_camera i2c drivers into its own dir

Move all soc_camera i2c drivers into drivers/media/i2c/soc_camera/.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 475 insertions, 0 deletions

diff --git a/drivers/media/i2c/soc_camera/imx074.c b/drivers/media/i2c/soc_camera/imx074.c
new file mode 100644
index 000000000000..351e9bafe8fe
--- /dev/null
+++ b/drivers/media/i2c/soc_camera/imx074.c
@@ -0,0 +1,475 @@
+/*
+ * Driver for IMX074 CMOS Image Sensor from Sony
+ *
+ * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * Partially inspired by the IMX074 driver from the Android / MSM tree
+ *
+ * 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/delay.h>
+#include <linux/i2c.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <linux/module.h>
+
+#include <media/soc_camera.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-chip-ident.h>
+
+/* IMX074 registers */
+
+#define MODE_SELECT			0x0100
+#define IMAGE_ORIENTATION		0x0101
+#define GROUPED_PARAMETER_HOLD		0x0104
+
+/* Integration Time */
+#define COARSE_INTEGRATION_TIME_HI	0x0202
+#define COARSE_INTEGRATION_TIME_LO	0x0203
+/* Gain */
+#define ANALOGUE_GAIN_CODE_GLOBAL_HI	0x0204
+#define ANALOGUE_GAIN_CODE_GLOBAL_LO	0x0205
+
+/* PLL registers */
+#define PRE_PLL_CLK_DIV			0x0305
+#define PLL_MULTIPLIER			0x0307
+#define PLSTATIM			0x302b
+#define VNDMY_ABLMGSHLMT		0x300a
+#define Y_OPBADDR_START_DI		0x3014
+/* mode setting */
+#define FRAME_LENGTH_LINES_HI		0x0340
+#define FRAME_LENGTH_LINES_LO		0x0341
+#define LINE_LENGTH_PCK_HI		0x0342
+#define LINE_LENGTH_PCK_LO		0x0343
+#define YADDR_START			0x0347
+#define YADDR_END			0x034b
+#define X_OUTPUT_SIZE_MSB		0x034c
+#define X_OUTPUT_SIZE_LSB		0x034d
+#define Y_OUTPUT_SIZE_MSB		0x034e
+#define Y_OUTPUT_SIZE_LSB		0x034f
+#define X_EVEN_INC			0x0381
+#define X_ODD_INC			0x0383
+#define Y_EVEN_INC			0x0385
+#define Y_ODD_INC			0x0387
+
+#define HMODEADD			0x3001
+#define VMODEADD			0x3016
+#define VAPPLINE_START			0x3069
+#define VAPPLINE_END			0x306b
+#define SHUTTER				0x3086
+#define HADDAVE				0x30e8
+#define LANESEL				0x3301
+
+/* IMX074 supported geometry */
+#define IMX074_WIDTH			1052
+#define IMX074_HEIGHT			780
+
+/* IMX074 has only one fixed colorspace per pixelcode */
+struct imx074_datafmt {
+	enum v4l2_mbus_pixelcode	code;
+	enum v4l2_colorspace		colorspace;
+};
+
+struct imx074 {
+	struct v4l2_subdev		subdev;
+	const struct imx074_datafmt	*fmt;
+};
+
+static const struct imx074_datafmt imx074_colour_fmts[] = {
+	{V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
+};
+
+static struct imx074 *to_imx074(const struct i2c_client *client)
+{
+	return container_of(i2c_get_clientdata(client), struct imx074, subdev);
+}
+
+/* Find a data format by a pixel code in an array */
+static const struct imx074_datafmt *imx074_find_datafmt(enum v4l2_mbus_pixelcode code)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++)
+		if (imx074_colour_fmts[i].code == code)
+			return imx074_colour_fmts + i;
+
+	return NULL;
+}
+
+static int reg_write(struct i2c_client *client, const u16 addr, const u8 data)
+{
+	struct i2c_adapter *adap = client->adapter;
+	struct i2c_msg msg;
+	unsigned char tx[3];
+	int ret;
+
+	msg.addr = client->addr;
+	msg.buf = tx;
+	msg.len = 3;
+	msg.flags = 0;
+
+	tx[0] = addr >> 8;
+	tx[1] = addr & 0xff;
+	tx[2] = data;
+
+	ret = i2c_transfer(adap, &msg, 1);
+
+	mdelay(2);
+
+	return ret == 1 ? 0 : -EIO;
+}
+
+static int reg_read(struct i2c_client *client, const u16 addr)
+{
+	u8 buf[2] = {addr >> 8, addr & 0xff};
+	int ret;
+	struct i2c_msg msgs[] = {
+		{
+			.addr  = client->addr,
+			.flags = 0,
+			.len   = 2,
+			.buf   = buf,
+		}, {
+			.addr  = client->addr,
+			.flags = I2C_M_RD,
+			.len   = 2,
+			.buf   = buf,
+		},
+	};
+
+	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (ret < 0) {
+		dev_warn(&client->dev, "Reading register %x from %x failed\n",
+			 addr, client->addr);
+		return ret;
+	}
+
+	return buf[0] & 0xff; /* no sign-extension */
+}
+
+static int imx074_try_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_mbus_framefmt *mf)
+{
+	const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
+
+	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
+
+	if (!fmt) {
+		mf->code	= imx074_colour_fmts[0].code;
+		mf->colorspace	= imx074_colour_fmts[0].colorspace;
+	}
+
+	mf->width	= IMX074_WIDTH;
+	mf->height	= IMX074_HEIGHT;
+	mf->field	= V4L2_FIELD_NONE;
+
+	return 0;
+}
+
+static int imx074_s_fmt(struct v4l2_subdev *sd,
+			struct v4l2_mbus_framefmt *mf)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct imx074 *priv = to_imx074(client);
+
+	dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
+
+	/* MIPI CSI could have changed the format, double-check */
+	if (!imx074_find_datafmt(mf->code))
+		return -EINVAL;
+
+	imx074_try_fmt(sd, mf);
+
+	priv->fmt = imx074_find_datafmt(mf->code);
+
+	return 0;
+}
+
+static int imx074_g_fmt(struct v4l2_subdev *sd,
+			struct v4l2_mbus_framefmt *mf)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct imx074 *priv = to_imx074(client);
+
+	const struct imx074_datafmt *fmt = priv->fmt;
+
+	mf->code	= fmt->code;
+	mf->colorspace	= fmt->colorspace;
+	mf->width	= IMX074_WIDTH;
+	mf->height	= IMX074_HEIGHT;
+	mf->field	= V4L2_FIELD_NONE;
+
+	return 0;
+}
+
+static int imx074_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
+{
+	struct v4l2_rect *rect = &a->c;
+
+	a->type		= V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	rect->top	= 0;
+	rect->left	= 0;
+	rect->width	= IMX074_WIDTH;
+	rect->height	= IMX074_HEIGHT;
+
+	return 0;
+}
+
+static int imx074_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
+{
+	a->bounds.left			= 0;
+	a->bounds.top			= 0;
+	a->bounds.width			= IMX074_WIDTH;
+	a->bounds.height		= IMX074_HEIGHT;
+	a->defrect			= a->bounds;
+	a->type				= V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	a->pixelaspect.numerator	= 1;
+	a->pixelaspect.denominator	= 1;
+
+	return 0;
+}
+
+static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+			   enum v4l2_mbus_pixelcode *code)
+{
+	if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts))
+		return -EINVAL;
+
+	*code = imx074_colour_fmts[index].code;
+	return 0;
+}
+
+static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	/* MODE_SELECT: stream or standby */
+	return reg_write(client, MODE_SELECT, !!enable);
+}
+
+static int imx074_g_chip_ident(struct v4l2_subdev *sd,
+			       struct v4l2_dbg_chip_ident *id)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
+		return -EINVAL;
+
+	if (id->match.addr != client->addr)
+		return -ENODEV;
+
+	id->ident	= V4L2_IDENT_IMX074;
+	id->revision	= 0;
+
+	return 0;
+}
+
+static int imx074_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 struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
+	.s_stream	= imx074_s_stream,
+	.s_mbus_fmt	= imx074_s_fmt,
+	.g_mbus_fmt	= imx074_g_fmt,
+	.try_mbus_fmt	= imx074_try_fmt,
+	.enum_mbus_fmt	= imx074_enum_fmt,
+	.g_crop		= imx074_g_crop,
+	.cropcap	= imx074_cropcap,
+	.g_mbus_config	= imx074_g_mbus_config,
+};
+
+static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
+	.g_chip_ident	= imx074_g_chip_ident,
+};
+
+static struct v4l2_subdev_ops imx074_subdev_ops = {
+	.core	= &imx074_subdev_core_ops,
+	.video	= &imx074_subdev_video_ops,
+};
+
+static int imx074_video_probe(struct i2c_client *client)
+{
+	int ret;
+	u16 id;
+
+	/* Read sensor Model ID */
+	ret = reg_read(client, 0);
+	if (ret < 0)
+		return ret;
+
+	id = ret << 8;
+
+	ret = reg_read(client, 1);
+	if (ret < 0)
+		return ret;
+
+	id |= ret;
+
+	dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
+
+	if (id != 0x74)
+		return -ENODEV;
+
+	/* PLL Setting EXTCLK=24MHz, 22.5times */
+	reg_write(client, PLL_MULTIPLIER, 0x2D);
+	reg_write(client, PRE_PLL_CLK_DIV, 0x02);
+	reg_write(client, PLSTATIM, 0x4B);
+
+	/* 2-lane mode */
+	reg_write(client, 0x3024, 0x00);
+
+	reg_write(client, IMAGE_ORIENTATION, 0x00);
+
+	/* select RAW mode:
+	 * 0x08+0x08 = top 8 bits
+	 * 0x0a+0x08 = compressed 8-bits
+	 * 0x0a+0x0a = 10 bits
+	 */
+	reg_write(client, 0x0112, 0x08);
+	reg_write(client, 0x0113, 0x08);
+
+	/* Base setting for High frame mode */
+	reg_write(client, VNDMY_ABLMGSHLMT, 0x80);
+	reg_write(client, Y_OPBADDR_START_DI, 0x08);
+	reg_write(client, 0x3015, 0x37);
+	reg_write(client, 0x301C, 0x01);
+	reg_write(client, 0x302C, 0x05);
+	reg_write(client, 0x3031, 0x26);
+	reg_write(client, 0x3041, 0x60);
+	reg_write(client, 0x3051, 0x24);
+	reg_write(client, 0x3053, 0x34);
+	reg_write(client, 0x3057, 0xC0);
+	reg_write(client, 0x305C, 0x09);
+	reg_write(client, 0x305D, 0x07);
+	reg_write(client, 0x3060, 0x30);
+	reg_write(client, 0x3065, 0x00);
+	reg_write(client, 0x30AA, 0x08);
+	reg_write(client, 0x30AB, 0x1C);
+	reg_write(client, 0x30B0, 0x32);
+	reg_write(client, 0x30B2, 0x83);
+	reg_write(client, 0x30D3, 0x04);
+	reg_write(client, 0x3106, 0x78);
+	reg_write(client, 0x310C, 0x82);
+	reg_write(client, 0x3304, 0x05);
+	reg_write(client, 0x3305, 0x04);
+	reg_write(client, 0x3306, 0x11);
+	reg_write(client, 0x3307, 0x02);
+	reg_write(client, 0x3308, 0x0C);
+	reg_write(client, 0x3309, 0x06);
+	reg_write(client, 0x330A, 0x08);
+	reg_write(client, 0x330B, 0x04);
+	reg_write(client, 0x330C, 0x08);
+	reg_write(client, 0x330D, 0x06);
+	reg_write(client, 0x330E, 0x01);
+	reg_write(client, 0x3381, 0x00);
+
+	/* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */
+	/* 1608 = 1560 + 48 (black lines) */
+	reg_write(client, FRAME_LENGTH_LINES_HI, 0x06);
+	reg_write(client, FRAME_LENGTH_LINES_LO, 0x48);
+	reg_write(client, YADDR_START, 0x00);
+	reg_write(client, YADDR_END, 0x2F);
+	/* 0x838 == 2104 */
+	reg_write(client, X_OUTPUT_SIZE_MSB, 0x08);
+	reg_write(client, X_OUTPUT_SIZE_LSB, 0x38);
+	/* 0x618 == 1560 */
+	reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06);
+	reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18);
+	reg_write(client, X_EVEN_INC, 0x01);
+	reg_write(client, X_ODD_INC, 0x03);
+	reg_write(client, Y_EVEN_INC, 0x01);
+	reg_write(client, Y_ODD_INC, 0x03);
+	reg_write(client, HMODEADD, 0x00);
+	reg_write(client, VMODEADD, 0x16);
+	reg_write(client, VAPPLINE_START, 0x24);
+	reg_write(client, VAPPLINE_END, 0x53);
+	reg_write(client, SHUTTER, 0x00);
+	reg_write(client, HADDAVE, 0x80);
+
+	reg_write(client, LANESEL, 0x00);
+
+	reg_write(client, GROUPED_PARAMETER_HOLD, 0x00);	/* off */
+
+	return 0;
+}
+
+static int imx074_probe(struct i2c_client *client,
+			const struct i2c_device_id *did)
+{
+	struct imx074 *priv;
+	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
+	int ret;
+
+	if (!icl) {
+		dev_err(&client->dev, "IMX074: missing platform data!\n");
+		return -EINVAL;
+	}
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+		dev_warn(&adapter->dev,
+			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
+		return -EIO;
+	}
+
+	priv = kzalloc(sizeof(struct imx074), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops);
+
+	priv->fmt	= &imx074_colour_fmts[0];
+
+	ret = imx074_video_probe(client);
+	if (ret < 0) {
+		kfree(priv);
+		return ret;
+	}
+
+	return ret;
+}
+
+static int imx074_remove(struct i2c_client *client)
+{
+	struct imx074 *priv = to_imx074(client);
+	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
+
+	if (icl->free_bus)
+		icl->free_bus(icl);
+	kfree(priv);
+
+	return 0;
+}
+
+static const struct i2c_device_id imx074_id[] = {
+	{ "imx074", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, imx074_id);
+
+static struct i2c_driver imx074_i2c_driver = {
+	.driver = {
+		.name = "imx074",
+	},
+	.probe		= imx074_probe,
+	.remove		= imx074_remove,
+	.id_table	= imx074_id,
+};
+
+module_i2c_driver(imx074_i2c_driver);
+
+MODULE_DESCRIPTION("Sony IMX074 Camera driver");
+MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
+MODULE_LICENSE("GPL v2");