AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/media/i2c/ak881x.c
Mauro Carvalho Chehab b5dcee225c [media] include/media: split I2C headers from V4L2 core 
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>
2015-11-17 06:57:11 -02:00

328 lines
7.6 KiB
C
Raw Blame History

/*
* Driver for AK8813 / AK8814 TV-ecoders from Asahi Kasei Microsystems Co., Ltd. (AKM)
*
* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/module.h>
#include <media/i2c/ak881x.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#define AK881X_INTERFACE_MODE 0
#define AK881X_VIDEO_PROCESS1 1
#define AK881X_VIDEO_PROCESS2 2
#define AK881X_VIDEO_PROCESS3 3
#define AK881X_DAC_MODE 5
#define AK881X_STATUS 0x24
#define AK881X_DEVICE_ID 0x25
#define AK881X_DEVICE_REVISION 0x26
struct ak881x {
struct v4l2_subdev subdev;
struct ak881x_pdata *pdata;
unsigned int lines;
char revision; /* DEVICE_REVISION content */
};
static int reg_read(struct i2c_client *client, const u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int reg_write(struct i2c_client *client, const u8 reg,
const u8 data)
{
return i2c_smbus_write_byte_data(client, reg, data);
}
static int reg_set(struct i2c_client *client, const u8 reg,
const u8 data, u8 mask)
{
int ret = reg_read(client, reg);
if (ret < 0)
return ret;
return reg_write(client, reg, (ret & ~mask) | (data & mask));
}
static struct ak881x *to_ak881x(const struct i2c_client *client)
{
return container_of(i2c_get_clientdata(client), struct ak881x, subdev);
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ak881x_g_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (reg->reg > 0x26)
return -EINVAL;
reg->size = 1;
reg->val = reg_read(client, reg->reg);
if (reg->val > 0xffff)
return -EIO;
return 0;
}
static int ak881x_s_register(struct v4l2_subdev *sd,
const struct v4l2_dbg_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (reg->reg > 0x26)
return -EINVAL;
if (reg_write(client, reg->reg, reg->val) < 0)
return -EIO;
return 0;
}
#endif
static int ak881x_fill_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *mf = &format->format;
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ak881x *ak881x = to_ak881x(client);
if (format->pad)
return -EINVAL;
v4l_bound_align_image(&mf->width, 0, 720, 2,
&mf->height, 0, ak881x->lines, 1, 0);
mf->field = V4L2_FIELD_INTERLACED;
mf->code = MEDIA_BUS_FMT_YUYV8_2X8;
mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0;
}
static int ak881x_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->pad || code->index)
return -EINVAL;
code->code = MEDIA_BUS_FMT_YUYV8_2X8;
return 0;
}
static int ak881x_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ak881x *ak881x = to_ak881x(client);
a->bounds.left = 0;
a->bounds.top = 0;
a->bounds.width = 720;
a->bounds.height = ak881x->lines;
a->defrect = a->bounds;
a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
a->pixelaspect.numerator = 1;
a->pixelaspect.denominator = 1;
return 0;
}
static int ak881x_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ak881x *ak881x = to_ak881x(client);
u8 vp1;
if (std == V4L2_STD_NTSC_443) {
vp1 = 3;
ak881x->lines = 480;
} else if (std == V4L2_STD_PAL_M) {
vp1 = 5;
ak881x->lines = 480;
} else if (std == V4L2_STD_PAL_60) {
vp1 = 7;
ak881x->lines = 480;
} else if (std & V4L2_STD_NTSC) {
vp1 = 0;
ak881x->lines = 480;
} else if (std & V4L2_STD_PAL) {
vp1 = 0xf;
ak881x->lines = 576;
} else {
/* No SECAM or PAL_N/Nc supported */
return -EINVAL;
}
reg_set(client, AK881X_VIDEO_PROCESS1, vp1, 0xf);
return 0;
}
static int ak881x_s_stream(struct v4l2_subdev *sd, int enable)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ak881x *ak881x = to_ak881x(client);
if (enable) {
u8 dac;
/* For colour-bar testing set bit 6 of AK881X_VIDEO_PROCESS1 */
/* Default: composite output */
if (ak881x->pdata->flags & AK881X_COMPONENT)
dac = 3;
else
dac = 4;
/* Turn on the DAC(s) */
reg_write(client, AK881X_DAC_MODE, dac);
dev_dbg(&client->dev, "chip status 0x%x\n",
reg_read(client, AK881X_STATUS));
} else {
/* ...and clear bit 6 of AK881X_VIDEO_PROCESS1 here */
reg_write(client, AK881X_DAC_MODE, 0);
dev_dbg(&client->dev, "chip status 0x%x\n",
reg_read(client, AK881X_STATUS));
}
return 0;
}
static struct v4l2_subdev_core_ops ak881x_subdev_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ak881x_g_register,
.s_register = ak881x_s_register,
#endif
};
static struct v4l2_subdev_video_ops ak881x_subdev_video_ops = {
.cropcap = ak881x_cropcap,
.s_std_output = ak881x_s_std_output,
.s_stream = ak881x_s_stream,
};
static const struct v4l2_subdev_pad_ops ak881x_subdev_pad_ops = {
.enum_mbus_code = ak881x_enum_mbus_code,
.set_fmt = ak881x_fill_fmt,
.get_fmt = ak881x_fill_fmt,
};
static struct v4l2_subdev_ops ak881x_subdev_ops = {
.core = &ak881x_subdev_core_ops,
.video = &ak881x_subdev_video_ops,
.pad = &ak881x_subdev_pad_ops,
};
static int ak881x_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct ak881x *ak881x;
u8 ifmode, data;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_warn(&adapter->dev,
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
return -EIO;
}
ak881x = devm_kzalloc(&client->dev, sizeof(*ak881x), GFP_KERNEL);
if (!ak881x)
return -ENOMEM;
v4l2_i2c_subdev_init(&ak881x->subdev, client, &ak881x_subdev_ops);
data = reg_read(client, AK881X_DEVICE_ID);
switch (data) {
case 0x13:
case 0x14:
break;
default:
dev_err(&client->dev,
"No ak881x chip detected, register read %x\n", data);
return -ENODEV;
}
ak881x->revision = reg_read(client, AK881X_DEVICE_REVISION);
ak881x->pdata = client->dev.platform_data;
if (ak881x->pdata) {
if (ak881x->pdata->flags & AK881X_FIELD)
ifmode = 4;
else
ifmode = 0;
switch (ak881x->pdata->flags & AK881X_IF_MODE_MASK) {
case AK881X_IF_MODE_BT656:
ifmode |= 1;
break;
case AK881X_IF_MODE_MASTER:
ifmode |= 2;
break;
case AK881X_IF_MODE_SLAVE:
default:
break;
}
dev_dbg(&client->dev, "IF mode %x\n", ifmode);
/*
* "Line Blanking No." seems to be the same as the number of
* "black" lines on, e.g., SuperH VOU, whose default value of 20
* "incidentally" matches ak881x' default
*/
reg_write(client, AK881X_INTERFACE_MODE, ifmode | (20 << 3));
}
/* Hardware default: NTSC-M */
ak881x->lines = 480;
dev_info(&client->dev, "Detected an ak881x chip ID %x, revision %x\n",
data, ak881x->revision);
return 0;
}
static int ak881x_remove(struct i2c_client *client)
{
struct ak881x *ak881x = to_ak881x(client);
v4l2_device_unregister_subdev(&ak881x->subdev);
return 0;
}
static const struct i2c_device_id ak881x_id[] = {
{ "ak8813", 0 },
{ "ak8814", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ak881x_id);
static struct i2c_driver ak881x_i2c_driver = {
.driver = {
.name = "ak881x",
},
.probe = ak881x_probe,
.remove = ak881x_remove,
.id_table = ak881x_id,
};
module_i2c_driver(ak881x_i2c_driver);
MODULE_DESCRIPTION("TV-output driver for ak8813/ak8814");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_LICENSE("GPL v2");
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