1 files changed, 106 insertions, 0 deletions

diff --git a/drivers/media/i2c/ov7640.c b/drivers/media/i2c/ov7640.c
new file mode 100644
index 000000000000..b0cc927e8b19
--- /dev/null
+++ b/drivers/media/i2c/ov7640.c
@@ -0,0 +1,106 @@
+/*
+ * 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 <linux/slab.h>
+
+MODULE_DESCRIPTION("OmniVision ov7640 sensor driver");
+MODULE_LICENSE("GPL v2");
+
+static const 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, const 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 const struct v4l2_subdev_ops ov7640_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;
+
+        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+                return -ENODEV;
+
+        sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+        if (sd == NULL)
+                return -ENOMEM;
+        v4l2_i2c_subdev_init(sd, client, &ov7640_ops);
+
+        client->flags = I2C_CLIENT_SCCB;
+
+        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(sd);
+                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(sd);
+        return 0;
+}
+
+static const struct i2c_device_id ov7640_id[] = {
+        { "ov7640", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, ov7640_id);
+
+static struct i2c_driver ov7640_driver = {
+        .driver = {
+                .owner  = THIS_MODULE,
+                .name   = "ov7640",
+        },
+        .probe = ov7640_probe,
+        .remove = ov7640_remove,
+        .id_table = ov7640_id,
+};
+module_i2c_driver(ov7640_driver);