forked from Minki/linux
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
/*
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* m52790 i2c ivtv driver.
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* Copyright (C) 2007 Hans Verkuil
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*
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* A/V source switching Mitsubishi M52790SP/FP
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/ioctl.h>
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#include <asm/uaccess.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/i2c/m52790.h>
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#include <media/v4l2-device.h>
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MODULE_DESCRIPTION("i2c device driver for m52790 A/V switch");
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MODULE_AUTHOR("Hans Verkuil");
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MODULE_LICENSE("GPL");
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struct m52790_state {
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struct v4l2_subdev sd;
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u16 input;
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u16 output;
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};
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static inline struct m52790_state *to_state(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct m52790_state, sd);
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}
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/* ----------------------------------------------------------------------- */
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static int m52790_write(struct v4l2_subdev *sd)
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{
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struct m52790_state *state = to_state(sd);
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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u8 sw1 = (state->input | state->output) & 0xff;
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u8 sw2 = (state->input | state->output) >> 8;
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return i2c_smbus_write_byte_data(client, sw1, sw2);
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}
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/* Note: audio and video are linked and cannot be switched separately.
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So audio and video routing commands are identical for this chip.
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In theory the video amplifier and audio modes could be handled
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separately for the output, but that seems to be overkill right now.
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The same holds for implementing an audio mute control, this is now
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part of the audio output routing. The normal case is that another
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chip takes care of the actual muting so making it part of the
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output routing seems to be the right thing to do for now. */
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static int m52790_s_routing(struct v4l2_subdev *sd,
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u32 input, u32 output, u32 config)
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{
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struct m52790_state *state = to_state(sd);
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state->input = input;
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state->output = output;
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m52790_write(sd);
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return 0;
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}
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
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{
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struct m52790_state *state = to_state(sd);
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if (reg->reg != 0)
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return -EINVAL;
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reg->size = 1;
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reg->val = state->input | state->output;
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return 0;
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}
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static int m52790_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
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{
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struct m52790_state *state = to_state(sd);
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if (reg->reg != 0)
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return -EINVAL;
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state->input = reg->val & 0x0303;
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state->output = reg->val & ~0x0303;
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m52790_write(sd);
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return 0;
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}
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#endif
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static int m52790_log_status(struct v4l2_subdev *sd)
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{
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struct m52790_state *state = to_state(sd);
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v4l2_info(sd, "Switch 1: %02x\n",
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(state->input | state->output) & 0xff);
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v4l2_info(sd, "Switch 2: %02x\n",
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(state->input | state->output) >> 8);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_subdev_core_ops m52790_core_ops = {
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.log_status = m52790_log_status,
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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.g_register = m52790_g_register,
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.s_register = m52790_s_register,
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#endif
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};
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static const struct v4l2_subdev_audio_ops m52790_audio_ops = {
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.s_routing = m52790_s_routing,
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};
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static const struct v4l2_subdev_video_ops m52790_video_ops = {
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.s_routing = m52790_s_routing,
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};
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static const struct v4l2_subdev_ops m52790_ops = {
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.core = &m52790_core_ops,
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.audio = &m52790_audio_ops,
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.video = &m52790_video_ops,
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};
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/* ----------------------------------------------------------------------- */
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/* i2c implementation */
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static int m52790_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct m52790_state *state;
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struct v4l2_subdev *sd;
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/* Check if the adapter supports the needed features */
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -EIO;
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v4l_info(client, "chip found @ 0x%x (%s)\n",
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client->addr << 1, client->adapter->name);
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state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
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if (state == NULL)
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return -ENOMEM;
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sd = &state->sd;
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v4l2_i2c_subdev_init(sd, client, &m52790_ops);
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state->input = M52790_IN_TUNER;
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state->output = M52790_OUT_STEREO;
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m52790_write(sd);
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return 0;
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}
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static int m52790_remove(struct i2c_client *client)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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v4l2_device_unregister_subdev(sd);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct i2c_device_id m52790_id[] = {
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{ "m52790", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, m52790_id);
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static struct i2c_driver m52790_driver = {
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.driver = {
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.name = "m52790",
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},
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.probe = m52790_probe,
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.remove = m52790_remove,
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.id_table = m52790_id,
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};
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module_i2c_driver(m52790_driver);
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