forked from luck/tmp_suning_uos_patched
f69d419a0b
For some reason the include header wasn't changed from v4l2-i2c-drv-legacy.h to v4l2-i2c-drv.h in the previous patch. This is now corrected. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
164 lines
4.1 KiB
C
164 lines
4.1 KiB
C
/*
|
|
* vp27smpx - driver version 0.0.1
|
|
*
|
|
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
|
|
*
|
|
* Based on a tvaudio patch from Takahiro Adachi <tadachi@tadachi-net.com>
|
|
* and Kazuhiko Kawakami <kazz-0@mail.goo.ne.jp>
|
|
*
|
|
* 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/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/ioctl.h>
|
|
#include <asm/uaccess.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/i2c-id.h>
|
|
#include <linux/videodev.h>
|
|
#include <media/v4l2-common.h>
|
|
#include <media/v4l2-chip-ident.h>
|
|
#include <media/v4l2-i2c-drv.h>
|
|
|
|
MODULE_DESCRIPTION("vp27smpx driver");
|
|
MODULE_AUTHOR("Hans Verkuil");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
struct vp27smpx_state {
|
|
int radio;
|
|
u32 audmode;
|
|
};
|
|
|
|
static void vp27smpx_set_audmode(struct i2c_client *client, u32 audmode)
|
|
{
|
|
struct vp27smpx_state *state = i2c_get_clientdata(client);
|
|
u8 data[3] = { 0x00, 0x00, 0x04 };
|
|
|
|
switch (audmode) {
|
|
case V4L2_TUNER_MODE_MONO:
|
|
case V4L2_TUNER_MODE_LANG1:
|
|
break;
|
|
case V4L2_TUNER_MODE_STEREO:
|
|
case V4L2_TUNER_MODE_LANG1_LANG2:
|
|
data[1] = 0x01;
|
|
break;
|
|
case V4L2_TUNER_MODE_LANG2:
|
|
data[1] = 0x02;
|
|
break;
|
|
}
|
|
|
|
if (i2c_master_send(client, data, sizeof(data)) != sizeof(data)) {
|
|
v4l_err(client, "%s: I/O error setting audmode\n", client->name);
|
|
}
|
|
else {
|
|
state->audmode = audmode;
|
|
}
|
|
}
|
|
|
|
static int vp27smpx_command(struct i2c_client *client, unsigned int cmd, void *arg)
|
|
{
|
|
struct vp27smpx_state *state = i2c_get_clientdata(client);
|
|
struct v4l2_tuner *vt = arg;
|
|
|
|
switch (cmd) {
|
|
case AUDC_SET_RADIO:
|
|
state->radio = 1;
|
|
break;
|
|
|
|
case VIDIOC_S_STD:
|
|
state->radio = 0;
|
|
break;
|
|
|
|
case VIDIOC_S_TUNER:
|
|
if (!state->radio)
|
|
vp27smpx_set_audmode(client, vt->audmode);
|
|
break;
|
|
|
|
case VIDIOC_G_TUNER:
|
|
if (state->radio)
|
|
break;
|
|
vt->audmode = state->audmode;
|
|
vt->capability = V4L2_TUNER_CAP_STEREO |
|
|
V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
|
|
vt->rxsubchans = V4L2_TUNER_SUB_MONO;
|
|
break;
|
|
|
|
case VIDIOC_G_CHIP_IDENT:
|
|
return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_VP27SMPX, 0);
|
|
|
|
case VIDIOC_LOG_STATUS:
|
|
v4l_info(client, "Audio Mode: %u%s\n", state->audmode,
|
|
state->radio ? " (Radio)" : "");
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
/* i2c implementation */
|
|
|
|
/*
|
|
* Generic i2c probe
|
|
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
|
|
*/
|
|
|
|
static int vp27smpx_probe(struct i2c_client *client)
|
|
{
|
|
struct vp27smpx_state *state;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
snprintf(client->name, sizeof(client->name) - 1, "vp27smpx");
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
|
|
|
|
state = kzalloc(sizeof(struct vp27smpx_state), GFP_KERNEL);
|
|
if (state == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
state->audmode = V4L2_TUNER_MODE_STEREO;
|
|
i2c_set_clientdata(client, state);
|
|
|
|
/* initialize vp27smpx */
|
|
vp27smpx_set_audmode(client, state->audmode);
|
|
return 0;
|
|
}
|
|
|
|
static int vp27smpx_remove(struct i2c_client *client)
|
|
{
|
|
kfree(i2c_get_clientdata(client));
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
|
.name = "vp27smpx",
|
|
.driverid = I2C_DRIVERID_VP27SMPX,
|
|
.command = vp27smpx_command,
|
|
.probe = vp27smpx_probe,
|
|
.remove = vp27smpx_remove,
|
|
};
|
|
|