From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jae Hyun Yoo Date: Fri, 31 May 2019 15:15:44 -0700 Subject: [PATCH v3 06/10] media: aspeed: remove checking of VE_INTERRUPT_CAPTURE_COMPLETE In-Reply-To: <20190531221548.14757-1-jae.hyun.yoo@linux.intel.com> References: <20190531221548.14757-1-jae.hyun.yoo@linux.intel.com> Message-ID: <20190531221548.14757-7-jae.hyun.yoo@linux.intel.com> List-Id: To: linux-aspeed@lists.ozlabs.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit VE_INTERRUPT_CAPTURE_COMPLETE and VE_INTERRUPT_COMP_COMPLETE are not set at the same time but the current interrupt handling mechanism of this driver doesn't clear the interrupt flag until both two are set, and this behavior causes unnecessary interrupt handler calls. In fact, this driver provides JPEG format only so taking care of the VE_INTERRUPT_COMP_COMPLETE is enough for getting compressed image frame so this commit gets rid of the VE_INTERRUPT_CAPTURE_COMPLETE checking logic to simplify the logic. Handling of VE_INTERRUPT_CAPTURE_COMPLETE could be added back later when it's actually needed. Signed-off-by: Jae Hyun Yoo Reviewed-by: Eddie James Reviewed-by: Andrew Jeffery --- v2 -> v3: None. v1 -> v2: None. drivers/media/platform/aspeed-video.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c index 92abdfc79e76..1cba582918cc 100644 --- a/drivers/media/platform/aspeed-video.c +++ b/drivers/media/platform/aspeed-video.c @@ -463,8 +463,7 @@ static int aspeed_video_start_frame(struct aspeed_video *video) aspeed_video_write(video, VE_COMP_ADDR, addr); aspeed_video_update(video, VE_INTERRUPT_CTRL, 0, - VE_INTERRUPT_COMP_COMPLETE | - VE_INTERRUPT_CAPTURE_COMPLETE); + VE_INTERRUPT_COMP_COMPLETE); aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_TRIG_CAPTURE | VE_SEQ_CTRL_TRIG_COMP); @@ -568,8 +567,7 @@ static irqreturn_t aspeed_video_irq(int irq, void *arg) } } - if ((sts & VE_INTERRUPT_COMP_COMPLETE) && - (sts & VE_INTERRUPT_CAPTURE_COMPLETE)) { + if (sts & VE_INTERRUPT_COMP_COMPLETE) { struct aspeed_video_buffer *buf; u32 frame_size = aspeed_video_read(video, VE_OFFSET_COMP_STREAM); @@ -598,11 +596,9 @@ static irqreturn_t aspeed_video_irq(int irq, void *arg) VE_SEQ_CTRL_FORCE_IDLE | VE_SEQ_CTRL_TRIG_COMP, 0); aspeed_video_update(video, VE_INTERRUPT_CTRL, - VE_INTERRUPT_COMP_COMPLETE | - VE_INTERRUPT_CAPTURE_COMPLETE, 0); + VE_INTERRUPT_COMP_COMPLETE, 0); aspeed_video_write(video, VE_INTERRUPT_STATUS, - VE_INTERRUPT_COMP_COMPLETE | - VE_INTERRUPT_CAPTURE_COMPLETE); + VE_INTERRUPT_COMP_COMPLETE); if (test_bit(VIDEO_STREAMING, &video->flags) && buf) aspeed_video_start_frame(video); -- 2.21.0