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media: tegra-video: Separate CSI stream enable and disable implementations

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This patch separates implementation of CSI stream enable and disable
into separate functions for readability.

Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Sowjanya Komatineni 2020-08-12 02:27:16 +02:00 committed by Mauro Carvalho Chehab
parent b73be49942
commit 654c433beb
1 changed files with 37 additions and 18 deletions
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55
drivers/staging/media/tegra-video/csi.c
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@ -232,37 +232,56 @@ static int tegra_csi_g_frame_interval(struct v4l2_subdev *subdev,
return 0;
}
static int tegra_csi_s_stream(struct v4l2_subdev *subdev, int enable)
static int tegra_csi_enable_stream(struct v4l2_subdev *subdev)
{
struct tegra_vi_channel *chan = v4l2_get_subdev_hostdata(subdev);
struct tegra_csi_channel *csi_chan = to_csi_chan(subdev);
struct tegra_csi *csi = csi_chan->csi;
int ret = 0;
int ret;
csi_chan->pg_mode = chan->pg_mode;
if (enable) {
ret = pm_runtime_get_sync(csi->dev);
if (ret < 0) {
dev_err(csi->dev,
"failed to get runtime PM: %d\n", ret);
pm_runtime_put_noidle(csi->dev);
return ret;
}
ret = csi->ops->csi_start_streaming(csi_chan);
if (ret < 0)
goto rpm_put;
return 0;
ret = pm_runtime_get_sync(csi->dev);
if (ret < 0) {
dev_err(csi->dev, "failed to get runtime PM: %d\n", ret);
pm_runtime_put_noidle(csi->dev);
return ret;
}
csi->ops->csi_stop_streaming(csi_chan);
csi_chan->pg_mode = chan->pg_mode;
ret = csi->ops->csi_start_streaming(csi_chan);
if (ret < 0)
goto rpm_put;
return 0;
rpm_put:
pm_runtime_put(csi->dev);
return ret;
}
static int tegra_csi_disable_stream(struct v4l2_subdev *subdev)
{
struct tegra_csi_channel *csi_chan = to_csi_chan(subdev);
struct tegra_csi *csi = csi_chan->csi;
csi->ops->csi_stop_streaming(csi_chan);
pm_runtime_put(csi->dev);
return 0;
}
static int tegra_csi_s_stream(struct v4l2_subdev *subdev, int enable)
{
int ret;
if (enable)
ret = tegra_csi_enable_stream(subdev);
else
ret = tegra_csi_disable_stream(subdev);
return ret;
}
/*
* V4L2 Subdevice Operations
*/