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| author |   Tim Harvey <tharvey@gateworks.com> | 2018-10-24 16:25:51 -0400 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-12-03 14:26:27 -0500 |
| commit | 9483a3f8e1b58ba1d7cd21687d8d0a63a015c36b (patch) | |
| tree | aff227c2f201098c6fdf7ad6a9127e44ca0898a6 /drivers/media/i2c/adv7180.c | |
| parent | media: em28xx: fix spelling mistake, "Cinnergy" -> "Cinergy" (diff) | |
| download | linux-dev-9483a3f8e1b58ba1d7cd21687d8d0a63a015c36b.tar.xz linux-dev-9483a3f8e1b58ba1d7cd21687d8d0a63a015c36b.zip | |
media: adv7180: add g_skip_frames support
The adv7180 produces 1 to 2 frames of garbage before proper sync is
established. This allows V4L2 drivers and apps to skip those.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/i2c/adv7180.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c index 99697baad2ea..6f3dc8862622 100644 --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -180,6 +180,9 @@ #define V4L2_CID_ADV_FAST_SWITCH (V4L2_CID_USER_ADV7180_BASE + 0x00) +/* Initial number of frames to skip to avoid possible garbage */ +#define ADV7180_NUM_OF_SKIP_FRAMES 2 + struct adv7180_state; #define ADV7180_FLAG_RESET_POWERED BIT(0) @@ -769,6 +772,13 @@ static int adv7180_g_mbus_config(struct v4l2_subdev *sd, return 0; } +static int adv7180_get_skip_frames(struct v4l2_subdev *sd, u32 *frames) +{ + *frames = ADV7180_NUM_OF_SKIP_FRAMES; + + return 0; +} + static int adv7180_g_pixelaspect(struct v4l2_subdev *sd, struct v4l2_fract *aspect) { struct adv7180_state *state = to_state(sd); @@ -849,10 +859,15 @@ static const struct v4l2_subdev_pad_ops adv7180_pad_ops = { .get_fmt = adv7180_get_pad_format, }; +static const struct v4l2_subdev_sensor_ops adv7180_sensor_ops = { + .g_skip_frames = adv7180_get_skip_frames, +}; + static const struct v4l2_subdev_ops adv7180_ops = { .core = &adv7180_core_ops, .video = &adv7180_video_ops, .pad = &adv7180_pad_ops, + .sensor = &adv7180_sensor_ops, }; static irqreturn_t adv7180_irq(int irq, void *devid) |