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vdin: optimizing dump buffer [1/1]

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PD#SWPL-146774

Problem:
dump buffer abnormal when hsize non-8-byte align

Solution:
do 8 bytes swap of excess bytes in every line

Verify:
t3x

Change-Id: I992bf98ea7a0c7f37254446610b9c57a3c8ecccf
Signed-off-by: haitao.liu <haitao.liu@amlogic.com>
This commit is contained in:
haitao.liu
2023-11-23 20:14:12 +08:00
committed by Luan Yuan
parent b71b77d8ce
commit 39da7dcba6
1 changed files with 9 additions and 3 deletions
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drivers/media/vin/tvin/vdin/vdin_debug.c
+9 -3
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@@ -1122,7 +1122,7 @@ static void vdin_dump_one_buf_mem(char *path, struct vdin_dev_s *devp,
struct file *filp = NULL;
loff_t pos = 0;
void *buf = NULL;
unsigned int i, j;
unsigned int i, j, offset = 0;
unsigned int span = 0, count = 0;
int highmem_flag;
unsigned long high_addr;
@@ -1174,11 +1174,17 @@ static void vdin_dump_one_buf_mem(char *path, struct vdin_dev_s *devp,
vdin_dma_flush(devp, buf, devp->canvas_w,
DMA_FROM_DEVICE);
kernel_write(filp, buf, devp->canvas_active_w, &pos);
offset = devp->canvas_active_w % 8;
if (offset && pos) {
pos = pos - offset;
kernel_write(filp, buf + devp->canvas_active_w + 8 - 2 * offset,
offset, &pos);
}
buf += devp->canvas_w;
}
/*kernel_write(filp, buf, devp->canvas_max_size, &pos);*/
pr_info("write buffer %2d of %2u to %s.\n",
buf_num, devp->canvas_max_num, path);
pr_info("write buffer %2d of %2u to %s.offset=%d\n",
buf_num, devp->canvas_max_num, path, offset);
} else {
pr_info("high mem area: one line size (%d, active:%d)\n",
devp->canvas_w, devp->canvas_active_w);