diff options
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/media/i2c/Makefile | 3 | ||||
| -rw-r--r-- | drivers/media/i2c/ov7640.c | 106 |
3 files changed, 119 insertions, 1 deletions
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 785e2132a573..790788597bad 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -395,6 +395,17 @@ config VIDEO_APTINA_PLL config VIDEO_SMIAPP_PLL tristate +config VIDEO_OV7640 + tristate "OmniVision OV7640 sensor support" + depends on I2C && VIDEO_V4L2 + depends on MEDIA_CAMERA_SUPPORT + ---help--- + This is a Video4Linux2 sensor-level driver for the OmniVision + OV7640 camera. + + To compile this driver as a module, choose M here: the + module will be called ov7640. + config VIDEO_OV7670 tristate "OmniVision OV7670 sensor support" depends on I2C && VIDEO_V4L2 diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 4c570757089e..adf950406a94 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -47,7 +47,8 @@ obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o -obj-$(CONFIG_VIDEO_OV7670) += ov7670.o +obj-$(CONFIG_VIDEO_OV7640) += ov7640.o +obj-$(CONFIG_VIDEO_OV7670) += ov7670.o obj-$(CONFIG_VIDEO_OV9650) += ov9650.o obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o 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); |