V4L/DVB (4546): Add u32 argument to VIDIOC_INT_RESET.

The extra argument makes it possible to reset subsystems of a chip if
that is supported.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

4 files changed, 6 insertions, 4 deletions

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index 2a461dde480c..20df657b70c8 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -174,7 +174,7 @@ static void em28xx_config_i2c(struct em28xx *dev)
 
         route.input = INPUT(dev->ctl_input)->vmux;
         route.output = 0;
-        em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL);
+        em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, 0);
         em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
         em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
index c80c26be6e4d..df8feac16aee 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
@@ -221,7 +221,7 @@ static unsigned int decoder_describe(struct pvr2_v4l_cx2584x *ctxt,
 static void decoder_reset(struct pvr2_v4l_cx2584x *ctxt)
 {
         int ret;
-        ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_RESET,NULL);
+        ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_RESET,0);
         pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx25840 decoder_reset (ret=%d)",ret);
 }
 
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index 8d972ffdaf98..78d28b03ec93 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -938,6 +938,7 @@ void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
         case VIDIOC_INT_I2S_CLOCK_FREQ:
         case VIDIOC_INT_S_STANDBY:
+        case VIDIOC_INT_RESET:
         {
                 u32 *p=arg;
 
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index 5564db13c0d5..8721ac4a45a7 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -169,8 +169,9 @@ enum v4l2_chip_ident {
 #define VIDIOC_INT_S_REGISTER           _IOR ('d', 100, struct v4l2_register)
 #define VIDIOC_INT_G_REGISTER           _IOWR('d', 101, struct v4l2_register)
 
-/* Reset the I2C chip */
-#define VIDIOC_INT_RESET                _IO  ('d', 102)
+/* Generic reset command. The argument selects which subsystems to reset.
+   Passing 0 will always reset the whole chip. */
+#define VIDIOC_INT_RESET                _IOW ('d', 102, u32)
 
 /* Set the frequency (in Hz) of the audio clock output.
    Used to slave an audio processor to the video decoder, ensuring that audio