This patch adds an initial driver for the IMXß74 image sensor from Sony.
Lacking documentation, only very basic functionality in one specific image
format has been implemented and tested.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 8b1acc4..38cf6b3 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -783,6 +783,12 @@ config SOC_CAMERA
over a bus like PCI or USB. For example some i2c camera connected
directly to the data bus of an SoC.
+config SOC_CAMERA_IMX074
+ tristate "imx074 support"
+ depends on SOC_CAMERA && I2C
+ help
+ This driver supports IMX074 cameras from Sony
+
config SOC_CAMERA_MT9M001
tristate "mt9m001 support"
depends on SOC_CAMERA && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index d66bc65..7e8975b 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -74,6 +74,7 @@ obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
+obj-$(CONFIG_SOC_CAMERA_IMX074) += imx074.o
obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o
obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o
diff --git a/drivers/media/video/imx074.c b/drivers/media/video/imx074.c
new file mode 100644
index 0000000..380e459
--- /dev/null
+++ b/drivers/media/video/imx074.c
@@ -0,0 +1,508 @@
+/*
+ * Driver for IMX074 CMOS Image Sensor from Sony
+ *
+ * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
+ *
+ * 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/slab.h>
+#include <linux/videodev2.h>
+
+#include <media/soc_camera.h>
+#include <media/soc_mediabus.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 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,
+};
+
+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,
+};
+
+/*
+ * We have to provide soc-camera operations, but we don't have anything to say
+ * there. The MIPI CSI2 driver will provide .query_bus_param and .set_bus_param
+ */
+static unsigned long imx074_query_bus_param(struct soc_camera_device *icd)
+{
+ return 0;
+}
+
+static int imx074_set_bus_param(struct soc_camera_device *icd,
+ unsigned long flags)
+{
+ return -1;
+}
+
+static struct soc_camera_ops imx074_ops = {
+ .query_bus_param = imx074_query_bus_param,
+ .set_bus_param = imx074_set_bus_param,
+};
+
+static int imx074_video_probe(struct soc_camera_device *icd,
+ 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 soc_camera_device *icd = client->dev.platform_data;
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct soc_camera_link *icl;
+ int ret;
+
+ if (!icd) {
+ dev_err(&client->dev, "IMX074: missing soc-camera data!\n");
+ return -EINVAL;
+ }
+
+ icl = to_soc_camera_link(icd);
+ 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);
+
+ icd->ops = &imx074_ops;
+ priv->fmt = &imx074_colour_fmts[0];
+
+ ret = imx074_video_probe(icd, client);
+ if (ret < 0) {
+ icd->ops = NULL;
+ i2c_set_clientdata(client, NULL);
+ kfree(priv);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int imx074_remove(struct i2c_client *client)
+{
+ struct imx074 *priv = to_imx074(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
+
+ icd->ops = NULL;
+ if (icl->free_bus)
+ icl->free_bus(icl);
+ i2c_set_clientdata(client, NULL);
+ client->driver = NULL;
+ 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,
+};
+
+static int __init imx074_mod_init(void)
+{
+ return i2c_add_driver(&imx074_i2c_driver);
+}
+
+static void __exit imx074_mod_exit(void)
+{
+ i2c_del_driver(&imx074_i2c_driver);
+}
+
+module_init(imx074_mod_init);
+module_exit(imx074_mod_exit);
+
+MODULE_DESCRIPTION("Sony IMX074 Camera driver");
+MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@xxxxxx>");
+MODULE_LICENSE("GPL v2");
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
