mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-29 22:14:41 +08:00
b5dcee225c
Currently, include/media is messy, as it contains both the V4L2 core
headers and some driver-specific headers on the same place. That makes
harder to identify what core headers should be documented and what
headers belong to I2C drivers that are included only by bridge/main
drivers that would require the functions provided by them.
Let's move those i2c specific files to its own subdirectory.
The files to move were produced via the following script:
mkdir include/media/i2c
(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/*/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
for i in include/media/*.h; do n=`basename $i`; (for j in $(git grep -l $n); do dirname $j; done)|sort|uniq|grep -ve '^.$' > list; num=$(wc -l list|cut -d' ' -f1); if [ $num == 1 ]; then if [ "`grep i2c list`" != "" ]; then git mv $i include/media/i2c; fi; fi; done
And the references corrected via this script:
MAIN_DIR="media/"
PREV_DIR="media/"
DIRS="i2c/"
echo "Checking affected files" >&2
for i in $DIRS; do
for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
n=`basename $j`
git grep -l $n
done
done|sort|uniq >files && (
echo "Handling files..." >&2;
echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done";
);
echo "Handling documentation..." >&2;
echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done"
);
) >script && . ./script
Merged Sakari Ailus patch that moves smiapp.h to include/media/i2c.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
196 lines
5.2 KiB
C
196 lines
5.2 KiB
C
/*
|
|
* m52790 i2c ivtv driver.
|
|
* Copyright (C) 2007 Hans Verkuil
|
|
*
|
|
* A/V source switching Mitsubishi M52790SP/FP
|
|
*
|
|
* 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/slab.h>
|
|
#include <linux/ioctl.h>
|
|
#include <asm/uaccess.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <media/i2c/m52790.h>
|
|
#include <media/v4l2-device.h>
|
|
|
|
MODULE_DESCRIPTION("i2c device driver for m52790 A/V switch");
|
|
MODULE_AUTHOR("Hans Verkuil");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
struct m52790_state {
|
|
struct v4l2_subdev sd;
|
|
u16 input;
|
|
u16 output;
|
|
};
|
|
|
|
static inline struct m52790_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct m52790_state, sd);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int m52790_write(struct v4l2_subdev *sd)
|
|
{
|
|
struct m52790_state *state = to_state(sd);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
u8 sw1 = (state->input | state->output) & 0xff;
|
|
u8 sw2 = (state->input | state->output) >> 8;
|
|
|
|
return i2c_smbus_write_byte_data(client, sw1, sw2);
|
|
}
|
|
|
|
/* Note: audio and video are linked and cannot be switched separately.
|
|
So audio and video routing commands are identical for this chip.
|
|
In theory the video amplifier and audio modes could be handled
|
|
separately for the output, but that seems to be overkill right now.
|
|
The same holds for implementing an audio mute control, this is now
|
|
part of the audio output routing. The normal case is that another
|
|
chip takes care of the actual muting so making it part of the
|
|
output routing seems to be the right thing to do for now. */
|
|
static int m52790_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
struct m52790_state *state = to_state(sd);
|
|
|
|
state->input = input;
|
|
state->output = output;
|
|
m52790_write(sd);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
|
|
{
|
|
struct m52790_state *state = to_state(sd);
|
|
|
|
if (reg->reg != 0)
|
|
return -EINVAL;
|
|
reg->size = 1;
|
|
reg->val = state->input | state->output;
|
|
return 0;
|
|
}
|
|
|
|
static int m52790_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
|
|
{
|
|
struct m52790_state *state = to_state(sd);
|
|
|
|
if (reg->reg != 0)
|
|
return -EINVAL;
|
|
state->input = reg->val & 0x0303;
|
|
state->output = reg->val & ~0x0303;
|
|
m52790_write(sd);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int m52790_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct m52790_state *state = to_state(sd);
|
|
|
|
v4l2_info(sd, "Switch 1: %02x\n",
|
|
(state->input | state->output) & 0xff);
|
|
v4l2_info(sd, "Switch 2: %02x\n",
|
|
(state->input | state->output) >> 8);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops m52790_core_ops = {
|
|
.log_status = m52790_log_status,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = m52790_g_register,
|
|
.s_register = m52790_s_register,
|
|
#endif
|
|
};
|
|
|
|
static const struct v4l2_subdev_audio_ops m52790_audio_ops = {
|
|
.s_routing = m52790_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops m52790_video_ops = {
|
|
.s_routing = m52790_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops m52790_ops = {
|
|
.core = &m52790_core_ops,
|
|
.audio = &m52790_audio_ops,
|
|
.video = &m52790_video_ops,
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
/* i2c implementation */
|
|
|
|
static int m52790_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct m52790_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, &m52790_ops);
|
|
state->input = M52790_IN_TUNER;
|
|
state->output = M52790_OUT_STEREO;
|
|
m52790_write(sd);
|
|
return 0;
|
|
}
|
|
|
|
static int m52790_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 m52790_id[] = {
|
|
{ "m52790", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, m52790_id);
|
|
|
|
static struct i2c_driver m52790_driver = {
|
|
.driver = {
|
|
.name = "m52790",
|
|
},
|
|
.probe = m52790_probe,
|
|
.remove = m52790_remove,
|
|
.id_table = m52790_id,
|
|
};
|
|
|
|
module_i2c_driver(m52790_driver);
|