diff options
| author | Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> | 2019-05-31 18:15:45 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-05 15:45:10 -0400 |
| commit | 68b65879e81608b4fcb216e34ca083f048c84676 (patch) | |
| tree | 4a62bd15671152b3625f2d421141b8fc1e52f7c5 /drivers/media/platform/aspeed-video.c | |
| parent | f8a02b37e2188590bdc116ee0bcdf25907f5bfb8 (diff) | |
| download | linux-next-68b65879e81608b4fcb216e34ca083f048c84676.tar.gz | |
media: aspeed: refine interrupt handling logic
There are cases that interrupt bits are cleared by a 500ms delayed
work which causes unnecessary irq calls. Also, the current
interrupt handler returns IRQ_HANDLED always but it should return
IRQ_NONE if there is any unhandled interrupt. So this commit
refines the interrupt handling logic to fix these issues.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/aspeed-video.c')
| -rw-r--r-- | drivers/media/platform/aspeed-video.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c index 1cba582918cc..c0b889141b8f 100644 --- a/drivers/media/platform/aspeed-video.c +++ b/drivers/media/platform/aspeed-video.c @@ -488,6 +488,7 @@ static void aspeed_video_off(struct aspeed_video *video) /* Disable interrupts */ aspeed_video_write(video, VE_INTERRUPT_CTRL, 0); + aspeed_video_write(video, VE_INTERRUPT_STATUS, 0xffffffff); /* Turn off the relevant clocks */ clk_disable(video->vclk); @@ -554,7 +555,7 @@ static irqreturn_t aspeed_video_irq(int irq, void *arg) VE_INTERRUPT_MODE_DETECT, 0); aspeed_video_write(video, VE_INTERRUPT_STATUS, VE_INTERRUPT_MODE_DETECT); - + sts &= ~VE_INTERRUPT_MODE_DETECT; set_bit(VIDEO_MODE_DETECT_DONE, &video->flags); wake_up_interruptible_all(&video->wait); } else { @@ -599,12 +600,12 @@ static irqreturn_t aspeed_video_irq(int irq, void *arg) VE_INTERRUPT_COMP_COMPLETE, 0); aspeed_video_write(video, VE_INTERRUPT_STATUS, VE_INTERRUPT_COMP_COMPLETE); - + sts &= ~VE_INTERRUPT_COMP_COMPLETE; if (test_bit(VIDEO_STREAMING, &video->flags) && buf) aspeed_video_start_frame(video); } - return IRQ_HANDLED; + return sts ? IRQ_NONE : IRQ_HANDLED; } static void aspeed_video_check_and_set_polarity(struct aspeed_video *video) |