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Commit 82043ff6 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Mauro Carvalho Chehab
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[media] v4l: omap4iss: resizer: Stop the whole resizer to avoid FIFO overflows 



When stopping the resizer due to a buffer underrun, disabling RZA only
produces input FIFO overflows, most probably when the next frame is
received. Disable the whole resizer to work around the problem.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 97059524

drivers/staging/media/omap4iss/iss_resizer.c

+5 −3
Original line number Diff line number Diff line
@@ -266,10 +266,12 @@ static void resizer_configure(struct iss_resizer_device *resizer) 


static void resizer_isr_buffer(struct iss_resizer_device *resizer)

{

	struct iss_device *iss = to_iss_device(resizer);

	struct iss_buffer *buffer;



	iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_RESIZER, RZA_EN, RSZ_EN_EN);

	/* The whole resizer needs to be stopped. Disabling RZA only produces

	 * input FIFO overflows, most probably when the next frame is received.

	 */

	resizer_enable(resizer, 0);



	buffer = omap4iss_video_buffer_next(&resizer->video_out);

	if (buffer == NULL)
@@ -277,7 +279,7 @@ static void resizer_isr_buffer(struct iss_resizer_device *resizer) 


	resizer_set_outaddr(resizer, buffer->iss_addr);



	iss_reg_set(iss, OMAP4_ISS_MEM_ISP_RESIZER, RZA_EN, RSZ_EN_EN);

	resizer_enable(resizer, 1);

}



/*