linux/drivers/media/i2c/vp27smpx.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  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

  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 [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] 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

  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 [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

192 lines
4.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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>
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/ioctl.h>
#include <linux/uaccess.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
MODULE_DESCRIPTION("vp27smpx driver");
MODULE_AUTHOR("Hans Verkuil");
MODULE_LICENSE("GPL");
/* ----------------------------------------------------------------------- */
struct vp27smpx_state {
struct v4l2_subdev sd;
int radio;
u32 audmode;
};
static inline struct vp27smpx_state *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct vp27smpx_state, sd);
}
static void vp27smpx_set_audmode(struct v4l2_subdev *sd, u32 audmode)
{
struct vp27smpx_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
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))
v4l2_err(sd, "I/O error setting audmode\n");
else
state->audmode = audmode;
}
static int vp27smpx_s_radio(struct v4l2_subdev *sd)
{
struct vp27smpx_state *state = to_state(sd);
state->radio = 1;
return 0;
}
static int vp27smpx_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
{
struct vp27smpx_state *state = to_state(sd);
state->radio = 0;
return 0;
}
static int vp27smpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
{
struct vp27smpx_state *state = to_state(sd);
if (!state->radio)
vp27smpx_set_audmode(sd, vt->audmode);
return 0;
}
static int vp27smpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{
struct vp27smpx_state *state = to_state(sd);
if (state->radio)
return 0;
vt->audmode = state->audmode;
vt->capability = V4L2_TUNER_CAP_STEREO |
V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
vt->rxsubchans = V4L2_TUNER_SUB_MONO;
return 0;
}
static int vp27smpx_log_status(struct v4l2_subdev *sd)
{
struct vp27smpx_state *state = to_state(sd);
v4l2_info(sd, "Audio Mode: %u%s\n", state->audmode,
state->radio ? " (Radio)" : "");
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_subdev_core_ops vp27smpx_core_ops = {
.log_status = vp27smpx_log_status,
};
static const struct v4l2_subdev_tuner_ops vp27smpx_tuner_ops = {
.s_radio = vp27smpx_s_radio,
.s_tuner = vp27smpx_s_tuner,
.g_tuner = vp27smpx_g_tuner,
};
static const struct v4l2_subdev_video_ops vp27smpx_video_ops = {
.s_std = vp27smpx_s_std,
};
static const struct v4l2_subdev_ops vp27smpx_ops = {
.core = &vp27smpx_core_ops,
.tuner = &vp27smpx_tuner_ops,
.video = &vp27smpx_video_ops,
};
/* ----------------------------------------------------------------------- */
/* 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,
const struct i2c_device_id *id)
{
struct vp27smpx_state *state;
struct v4l2_subdev *sd;
/* 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);
state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &vp27smpx_ops);
state->audmode = V4L2_TUNER_MODE_STEREO;
/* initialize vp27smpx */
vp27smpx_set_audmode(sd, state->audmode);
return 0;
}
static int vp27smpx_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct i2c_device_id vp27smpx_id[] = {
{ "vp27smpx", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, vp27smpx_id);
static struct i2c_driver vp27smpx_driver = {
.driver = {
.name = "vp27smpx",
},
.probe = vp27smpx_probe,
.remove = vp27smpx_remove,
.id_table = vp27smpx_id,
};
module_i2c_driver(vp27smpx_driver);