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media: i2c: tc358743: export InfoFrames to debugfs

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Export InfoFrames to debugfs.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil
2024-08-28 16:24:12 +02:00
committed by Mauro Carvalho Chehab
parent 42765902bd
commit 23788ceb87
1 changed files with 35 additions and 1 deletions
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36
drivers/media/i2c/tc358743.c
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@@ -87,6 +87,10 @@ struct tc358743_state {
struct timer_list timer;
struct work_struct work_i2c_poll;
/* debugfs */
struct dentry *debugfs_dir;
struct v4l2_debugfs_if *infoframes;
/* edid */
u8 edid_blocks_written;
@@ -430,12 +434,35 @@ static void tc358743_erase_bksv(struct v4l2_subdev *sd)
/* --------------- AVI infoframe --------------- */
static ssize_t
tc358743_debugfs_if_read(u32 type, void *priv, struct file *filp,
char __user *ubuf, size_t count, loff_t *ppos)
{
u8 buf[V4L2_DEBUGFS_IF_MAX_LEN] = {};
struct v4l2_subdev *sd = priv;
int len;
if (!is_hdmi(sd))
return 0;
if (type != V4L2_DEBUGFS_IF_AVI)
return 0;
i2c_rd(sd, PK_AVI_0HEAD, buf, PK_AVI_16BYTE - PK_AVI_0HEAD + 1);
len = buf[2] + 4;
if (len > V4L2_DEBUGFS_IF_MAX_LEN)
len = -ENOENT;
if (len > 0)
len = simple_read_from_buffer(ubuf, count, ppos, buf, len);
return len < 0 ? 0 : len;
}
static void print_avi_infoframe(struct v4l2_subdev *sd)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct device *dev = &client->dev;
union hdmi_infoframe frame;
u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
u8 buffer[HDMI_INFOFRAME_SIZE(AVI)] = {};
if (!is_hdmi(sd)) {
v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n");
@@ -2161,6 +2188,11 @@ static int tc358743_probe(struct i2c_client *client)
if (err < 0)
goto err_work_queues;
state->debugfs_dir = debugfs_create_dir(sd->name, v4l2_debugfs_root());
state->infoframes = v4l2_debugfs_if_alloc(state->debugfs_dir,
V4L2_DEBUGFS_IF_AVI, sd,
tc358743_debugfs_if_read);
v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
client->addr << 1, client->adapter->name);
@@ -2188,6 +2220,8 @@ static void tc358743_remove(struct i2c_client *client)
flush_work(&state->work_i2c_poll);
}
cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
v4l2_debugfs_if_free(state->infoframes);
debugfs_remove_recursive(state->debugfs_dir);
cec_unregister_adapter(state->cec_adap);
v4l2_async_unregister_subdev(sd);
v4l2_device_unregister_subdev(sd);