diff options
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/media/i2c/Makefile | 1 | ||||
| -rw-r--r-- | drivers/media/i2c/uda1342.c | 113 |
3 files changed, 123 insertions, 0 deletions
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 790788597bad..5df353f7c552 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -112,6 +112,15 @@ config VIDEO_TLV320AIC23B To compile this driver as a module, choose M here: the module will be called tlv320aic23b. +config VIDEO_UDA1342 + tristate "Philips UDA1342 audio codec" + depends on VIDEO_V4L2 && I2C + ---help--- + Support for the Philips UDA1342 audio codec. + + To compile this driver as a module, choose M here: the + module will be called uda1342. + config VIDEO_WM8775 tristate "Wolfson Microelectronics WM8775 audio ADC with input mixer" depends on VIDEO_V4L2 && I2C diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index adf950406a94..b1775b3fad04 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_VIDEO_CS5345) += cs5345.o obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o obj-$(CONFIG_VIDEO_M52790) += m52790.o obj-$(CONFIG_VIDEO_TLV320AIC23B) += tlv320aic23b.o +obj-$(CONFIG_VIDEO_UDA1342) += uda1342.o obj-$(CONFIG_VIDEO_WM8775) += wm8775.o obj-$(CONFIG_VIDEO_WM8739) += wm8739.o obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o diff --git a/drivers/media/i2c/uda1342.c b/drivers/media/i2c/uda1342.c new file mode 100644 index 000000000000..3af408556d27 --- /dev/null +++ b/drivers/media/i2c/uda1342.c @@ -0,0 +1,113 @@ +/* + * 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/module.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/uda1342.h> +#include <linux/slab.h> + +static int write_reg(struct i2c_client *client, int reg, int value) +{ + /* UDA1342 wants MSB first, but SMBus sends LSB first */ + i2c_smbus_write_word_data(client, reg, swab16(value)); + return 0; +} + +static int uda1342_s_routing(struct v4l2_subdev *sd, + u32 input, u32 output, u32 config) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + switch (input) { + case UDA1342_IN1: + write_reg(client, 0x00, 0x1241); /* select input 1 */ + break; + case UDA1342_IN2: + write_reg(client, 0x00, 0x1441); /* select input 2 */ + break; + default: + v4l2_err(sd, "input %d not supported\n", input); + break; + } + return 0; +} + +static const struct v4l2_subdev_audio_ops uda1342_audio_ops = { + .s_routing = uda1342_s_routing, +}; + +static const struct v4l2_subdev_ops uda1342_ops = { + .audio = &uda1342_audio_ops, +}; + +static int uda1342_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_WORD_DATA)) + return -ENODEV; + + dev_dbg(&client->dev, "initializing UDA1342 at address %d on %s\n", + client->addr, adapter->name); + + sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); + if (sd == NULL) + return -ENOMEM; + + v4l2_i2c_subdev_init(sd, client, &uda1342_ops); + + write_reg(client, 0x00, 0x8000); /* reset registers */ + write_reg(client, 0x00, 0x1241); /* select input 1 */ + + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + + return 0; +} + +static int uda1342_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 uda1342_id[] = { + { "uda1342", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, uda1342_id); + +static struct i2c_driver uda1342_driver = { + .driver = { + .name = "uda1342", + }, + .probe = uda1342_probe, + .remove = uda1342_remove, + .id_table = uda1342_id, +}; + +module_i2c_driver(uda1342_driver); + +MODULE_LICENSE("GPL v2"); |
