[Patch v2 16/35] media: ti-vpe: vpe: Setup srcdst parameters in start_streaming

From: Benoit Parrot
Date: Fri Nov 18 2016 - 18:25:19 EST

From: Nikhil Devshatwar <nikhil.nd@xxxxxx>

For deinterlacing operation, each operation needs 2 fields in the
history. This is achieved by holding three buffers in
ctx->src_vbs[0,1,2] (f,f-1,f-2)

This is achieved by using the ctx->sequence which gets reset via the
s_fmt ioctl.

These buffers are dequeued in stream OFF by calling free_vbs()
But the corresponding references aren't removed anywhere.

When application tries to stream ON and OFF continuously, s_fmt ioctl
won't be called and it won't setup the srcdst parameters.

Setting source/destination parameters in stream ON ioctl would make
sure that the context is re-initialized before it is being used by
the driver.

Signed-off-by: Nikhil Devshatwar <nikhil.nd@xxxxxx>
Signed-off-by: Benoit Parrot <bparrot@xxxxxx>
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
drivers/media/platform/ti-vpe/vpe.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c
index c79137b404ea..1ee7e611e41b 100644
--- a/drivers/media/platform/ti-vpe/vpe.c
+++ b/drivers/media/platform/ti-vpe/vpe.c
@@ -869,6 +869,7 @@ static int set_srcdst_params(struct vpe_ctx *ctx)

+ ctx->src_vbs[2] = ctx->src_vbs[1] = ctx->src_vbs[0] = NULL;

ret = realloc_mv_buffers(ctx, mv_buf_size);
if (ret)
@@ -1990,6 +1991,9 @@ static int vpe_start_streaming(struct vb2_queue *q, unsigned int count)
if (ctx->deinterlacing)
config_edi_input_mode(ctx, 0x0);

+ if (ctx->sequence != 0)
+ set_srcdst_params(ctx);
return 0;