xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config

Browse Source 
If a subdevice pad op is called from a bridge driver, then there is
no v4l2_subdev_fh struct that can be passed to the subdevice. This
made it hard to use such subdevs from a bridge driver.

This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config
pointer in the pad ops. This allows bridge drivers to use the various
try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it
along to the pad op.

The v4l2_subdev_get_try_* macros had to be changed because of this, so
I also took the opportunity to use the full name of the v4l2_subdev_get_try_*
functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do
'git grep v4l2_subdev_get_try_format' you will actually find the header
where it is defined.

One remark regarding the drivers/staging/media/davinci_vpfe patches: the
*_init_formats() functions assumed that fh could be NULL. However, that's
not true for this driver, it's always set. This is almost certainly a copy
and paste from the omap3isp driver. I've updated the code to reflect the
fact that fh is never NULL.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil
2015-03-04 01:47:54 -08:00
committed by Mauro Carvalho Chehab
parent 3d945be05a
commit f7234138f1
48 changed files with 813 additions and 797 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/media/i2c/tvp514x.c
View File

@@ -923,13 +923,13 @@ static const struct v4l2_ctrl_ops tvp514x_ctrl_ops = {
/**
* tvp514x_enum_mbus_code() - V4L2 decoder interface handler for enum_mbus_code
* @sd: pointer to standard V4L2 sub-device structure
* @fh: file handle
* @cfg: pad configuration
* @code: pointer to v4l2_subdev_mbus_code_enum structure
*
* Enumertaes mbus codes supported
*/
static int tvp514x_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
u32 pad = code->pad;
@@ -950,13 +950,13 @@ static int tvp514x_enum_mbus_code(struct v4l2_subdev *sd,
/**
* tvp514x_get_pad_format() - V4L2 decoder interface handler for get pad format
* @sd: pointer to standard V4L2 sub-device structure
* @fh: file handle
* @cfg: pad configuration
* @format: pointer to v4l2_subdev_format structure
*
* Retrieves pad format which is active or tried based on requirement
*/
static int tvp514x_get_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct tvp514x_decoder *decoder = to_decoder(sd);
@@ -979,13 +979,13 @@ static int tvp514x_get_pad_format(struct v4l2_subdev *sd,
/**
* tvp514x_set_pad_format() - V4L2 decoder interface handler for set pad format
* @sd: pointer to standard V4L2 sub-device structure
* @fh: file handle
* @cfg: pad configuration
* @format: pointer to v4l2_subdev_format structure
*
* Set pad format for the output pad
*/
static int tvp514x_set_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct tvp514x_decoder *decoder = to_decoder(sd);