linux/drivers/media/video/cs5345.c
Niels de Vos 61a2d07d3f Remove newline from the description of module parameters
Some module parameters with only one line have the '\n' at the end of the
description.  This is not needed nor wanted as after the description the
type (i.e.  int) is followed by a newline.

Some modules contain a multi-line description, these are not affected
by this patch.

Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Ed L. Cashin <ecashin@coraid.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Roland Dreier <rolandd@cisco.com>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01 12:46:41 -07:00

176 lines
4.6 KiB
C

/*
* cs5345 Cirrus Logic 24-bit, 192 kHz Stereo Audio ADC
* Copyright (C) 2007 Hans Verkuil
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-i2c-drv.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
MODULE_AUTHOR("Hans Verkuil");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, bool, 0644);
MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
/* ----------------------------------------------------------------------- */
static inline int cs5345_write(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline int cs5345_read(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int cs5345_command(struct i2c_client *client, unsigned cmd, void *arg)
{
struct v4l2_routing *route = arg;
struct v4l2_control *ctrl = arg;
switch (cmd) {
case VIDIOC_INT_G_AUDIO_ROUTING:
route->input = cs5345_read(client, 0x09) & 7;
route->input |= cs5345_read(client, 0x05) & 0x70;
route->output = 0;
break;
case VIDIOC_INT_S_AUDIO_ROUTING:
if ((route->input & 0xf) > 6) {
v4l_err(client, "Invalid input %d.\n", route->input);
return -EINVAL;
}
cs5345_write(client, 0x09, route->input & 0xf);
cs5345_write(client, 0x05, route->input & 0xf0);
break;
case VIDIOC_G_CTRL:
if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
ctrl->value = (cs5345_read(client, 0x04) & 0x08) != 0;
break;
}
if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
return -EINVAL;
ctrl->value = cs5345_read(client, 0x07) & 0x3f;
if (ctrl->value >= 32)
ctrl->value = ctrl->value - 64;
break;
case VIDIOC_S_CTRL:
break;
if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
cs5345_write(client, 0x04, ctrl->value ? 0x80 : 0);
break;
}
if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
return -EINVAL;
if (ctrl->value > 24 || ctrl->value < -24)
return -EINVAL;
cs5345_write(client, 0x07, ((u8)ctrl->value) & 0x3f);
cs5345_write(client, 0x08, ((u8)ctrl->value) & 0x3f);
break;
#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_S_REGISTER:
{
struct v4l2_register *reg = arg;
if (!v4l2_chip_match_i2c_client(client,
reg->match_type, reg->match_chip))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (cmd == VIDIOC_DBG_G_REGISTER)
reg->val = cs5345_read(client, reg->reg & 0x1f);
else
cs5345_write(client, reg->reg & 0x1f, reg->val & 0xff);
break;
}
#endif
case VIDIOC_G_CHIP_IDENT:
return v4l2_chip_ident_i2c_client(client,
arg, V4L2_IDENT_CS5345, 0);
case VIDIOC_LOG_STATUS:
{
u8 v = cs5345_read(client, 0x09) & 7;
u8 m = cs5345_read(client, 0x04);
int vol = cs5345_read(client, 0x08) & 0x3f;
v4l_info(client, "Input: %d%s\n", v,
(m & 0x80) ? " (muted)" : "");
if (vol >= 32)
vol = vol - 64;
v4l_info(client, "Volume: %d dB\n", vol);
break;
}
default:
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
static int cs5345_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
cs5345_write(client, 0x02, 0x00);
cs5345_write(client, 0x04, 0x01);
cs5345_write(client, 0x09, 0x01);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct i2c_device_id cs5345_id[] = {
{ "cs5345", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, cs5345_id);
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "cs5345",
.driverid = I2C_DRIVERID_CS5345,
.command = cs5345_command,
.probe = cs5345_probe,
.id_table = cs5345_id,
};