From: Pete Eberlein <pete@xxxxxxxxxxxx>
This is a subdev conversion of wis-ov7640 sensor driver from the
staging go7007 directory. This obsoletes the wis-ov7640 driver.
Priority: normal
Signed-off-by: Pete Eberlein <pete@xxxxxxxxxxxx>
diff -r 378d3bc9a3d6 -r 6d0a37622c1b linux/drivers/media/video/Kconfig
--- a/linux/drivers/media/video/Kconfig Thu Feb 11 14:48:26 2010 -0800
+++ b/linux/drivers/media/video/Kconfig Thu Feb 11 14:57:40 2010 -0800
@@ -309,6 +309,13 @@
To compile this driver as a module, choose M here: the
module will be called ks0127.
+config VIDEO_OV7640
+ tristate "OmniVision OV7640 sensor support"
+ depends on I2C && VIDEO_V4L2
+ ---help---
+ This is a Video4Linux2 sensor-level driver for the OmniVision
+ OV7640 camera. It currently only works with the GO7007 driver.
+
config VIDEO_OV7670
tristate "OmniVision OV7670 sensor support"
depends on I2C && VIDEO_V4L2
diff -r 378d3bc9a3d6 -r 6d0a37622c1b linux/drivers/media/video/Makefile
--- a/linux/drivers/media/video/Makefile Thu Feb 11 14:48:26 2010 -0800
+++ b/linux/drivers/media/video/Makefile Thu Feb 11 14:57:40 2010 -0800
@@ -67,6 +67,7 @@
obj-$(CONFIG_VIDEO_CX25840) += cx25840/
obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
+obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
diff -r 378d3bc9a3d6 -r 6d0a37622c1b linux/drivers/media/video/ov7640.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/linux/drivers/media/video/ov7640.c Thu Feb 11 14:57:40 2010 -0800
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2005-2006 Micronas USA Inc.
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv.h>
+
+MODULE_DESCRIPTION("OmniVision ov7640 sensor driver");
+MODULE_LICENSE("GPL v2");
+
+struct ov7640_info {
+ struct v4l2_subdev sd;
+ int brightness;
+ int contrast;
+ int saturation;
+ int hue;
+};
+
+static inline struct ov7640_info *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ov7640_info, sd);
+}
+
+
+static u8 initial_registers[] =
+{
+ 0x12, 0x80,
+ 0x12, 0x54,
+ 0x14, 0x24,
+ 0x15, 0x01,
+ 0x28, 0x20,
+ 0x75, 0x82,
+ 0xFF, 0xFF, /* Terminator (reg 0xFF is unused) */
+};
+
+static int write_regs(struct i2c_client *client, u8 *regs)
+{
+ int i;
+
+ for (i = 0; regs[i] != 0xFF; i += 2)
+ if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
+ return -1;
+ return 0;
+}
+
+
+static int ov7640_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_OV7640, 0);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops ov7640_core_ops = {
+ .g_chip_ident = ov7640_g_chip_ident,
+};
+
+static const struct v4l2_subdev_ops ov7640_ops = {
+ .core = &ov7640_core_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int ov7640_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ struct v4l2_subdev *sd;
+ struct ov7640_info *info;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ info = kzalloc(sizeof(struct ov7640_info), GFP_KERNEL);
+ if (info == NULL)
+ return -ENOMEM;
+ sd = &info->sd;
+ v4l2_i2c_subdev_init(sd, client, &ov7640_ops);
+
+ client->flags = 0x10; /* I2C_CLIENT_SCCB from wis-i2c.h */
+
+ v4l_info(client, "chip found @ 0x%02x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ if (write_regs(client, initial_registers) < 0) {
+ v4l_err(client, "error initializing OV7640\n");
+ kfree(info);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+
+static int ov7640_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_state(sd));
+ return 0;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
+static const struct i2c_device_id ov7640_id[] = {
+ { "ov7640", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ov7640_id);
+
+#endif
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+ .name = "ov7640",
+ .probe = ov7640_probe,
+ .remove = ov7640_remove,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
+ .id_table = ov7640_id,
+#endif
+};
+
diff -r 378d3bc9a3d6 -r 6d0a37622c1b linux/drivers/staging/go7007/go7007-usb.c
--- a/linux/drivers/staging/go7007/go7007-usb.c Thu Feb 11 14:48:26 2010 -0800
+++ b/linux/drivers/staging/go7007/go7007-usb.c Thu Feb 11 14:57:40 2010 -0800
@@ -265,7 +265,7 @@
.num_i2c_devs = 1,
.i2c_devs = {
{
- .type = "wis_ov7640",
+ .type = "ov7640",
.addr = 0x21,
},
},
diff -r 378d3bc9a3d6 -r 6d0a37622c1b linux/include/media/v4l2-chip-ident.h
--- a/linux/include/media/v4l2-chip-ident.h Thu Feb 11 14:48:26 2010 -0800
+++ b/linux/include/media/v4l2-chip-ident.h Thu Feb 11 14:57:40 2010 -0800
@@ -65,6 +65,7 @@
V4L2_IDENT_OV9655 = 255,
V4L2_IDENT_SOI968 = 256,
V4L2_IDENT_OV9640 = 257,
+ V4L2_IDENT_OV7640 = 258,
/* module saa7146: reserved range 300-309 */
V4L2_IDENT_SAA7146 = 300,
--
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