From 7784b1d2789816d3e5cef7243b6b6b4d7185ca3d Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Tue, 27 Nov 2018 05:02:48 -0500 Subject: [PATCH] media: mt9m111: add s_stream callback Add callback to check if we are already streaming. Now other callbacks can check the state and return -EBUSY if we already streaming. Signed-off-by: Marco Felsch Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/mt9m111.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c index 58d134dcdf44..03559669de9f 100644 --- a/drivers/media/i2c/mt9m111.c +++ b/drivers/media/i2c/mt9m111.c @@ -220,6 +220,7 @@ struct mt9m111 { int power_count; const struct mt9m111_datafmt *fmt; int lastpage; /* PageMap cache value */ + bool is_streaming; #ifdef CONFIG_MEDIA_CONTROLLER struct media_pad pad; #endif @@ -910,6 +911,14 @@ static int mt9m111_enum_mbus_code(struct v4l2_subdev *sd, return 0; } +static int mt9m111_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + + mt9m111->is_streaming = !!enable; + return 0; +} + static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *cfg) { @@ -923,6 +932,7 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, static const struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = { .g_mbus_config = mt9m111_g_mbus_config, + .s_stream = mt9m111_s_stream, }; static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = { -- 2.45.2