Commit 164646a7 authored by Jammy Huang's avatar Jammy Huang Committed by Mauro Carvalho Chehab
Browse files

media: aspeed: refine to avoid full jpeg update 



The switch of jpeg 420/444 subsampling will update full jpeg header for
aspeed now.

Just update the 420/444 subsampling part of jpeg header is fine.

Signed-off-by: default avatarJammy Huang <jammy_huang@aspeedtech.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 83ffdc32

drivers/media/platform/aspeed-video.c

+16 −1
Original line number Diff line number Diff line
@@ -422,6 +422,21 @@ static void aspeed_video_init_jpeg_table(u32 *table, bool yuv420) 
	}

}



// just update jpeg dct table per 420/444

static void aspeed_video_update_jpeg_table(u32 *table, bool yuv420)

{

	int i;

	unsigned int base;



	for (i = 0; i < ASPEED_VIDEO_JPEG_NUM_QUALITIES; i++) {

		base = 256 * i;	/* AST HW requires this header spacing */

		base += ASPEED_VIDEO_JPEG_HEADER_SIZE +

			ASPEED_VIDEO_JPEG_DCT_SIZE;



		table[base + 2] = (yuv420) ? 0x00220103 : 0x00110103;

	}

}



static void aspeed_video_update(struct aspeed_video *video, u32 reg, u32 clear,

				u32 bits)

{
@@ -1289,7 +1304,7 @@ static void aspeed_video_update_jpeg_quality(struct aspeed_video *video) 
static void aspeed_video_update_subsampling(struct aspeed_video *video)

{

	if (video->jpeg.virt)

		aspeed_video_init_jpeg_table(video->jpeg.virt, video->yuv420);

		aspeed_video_update_jpeg_table(video->jpeg.virt, video->yuv420);



	if (video->yuv420)

		aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_YUV420);