[media] media: exynos-gsc: use vb2_ops_wait_prepare/finish helper

This patch drops driver specific wait_prepare() and
wait_finish() callbacks from vb2_ops and instead uses
the the helpers vb2_ops_wait_prepare/finish() provided
by the vb2 core, the lock member of the queue needs
to be initalized to a mutex so that vb2 helpers
vb2_ops_wait_prepare/finish() can make use of it.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

2 files changed, 4 insertions, 14 deletions

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.h b/drivers/media/platform/exynos-gsc/gsc-core.h
index 0abdb17fb19c..fa572aacdb3f 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.h
+++ b/drivers/media/platform/exynos-gsc/gsc-core.h
@@ -466,18 +466,6 @@ static inline void gsc_hw_clear_irq(struct gsc_dev *dev, int irq)
         writel(cfg, dev->regs + GSC_IRQ);
 }
 
-static inline void gsc_lock(struct vb2_queue *vq)
-{
-        struct gsc_ctx *ctx = vb2_get_drv_priv(vq);
-        mutex_lock(&ctx->gsc_dev->lock);
-}
-
-static inline void gsc_unlock(struct vb2_queue *vq)
-{
-        struct gsc_ctx *ctx = vb2_get_drv_priv(vq);
-        mutex_unlock(&ctx->gsc_dev->lock);
-}
-
 static inline bool gsc_ctx_state_is_set(u32 mask, struct gsc_ctx *ctx)
 {
         unsigned long flags;
diff --git a/drivers/media/platform/exynos-gsc/gsc-m2m.c b/drivers/media/platform/exynos-gsc/gsc-m2m.c
index 74e1de637e8f..d5cffef2e227 100644
--- a/drivers/media/platform/exynos-gsc/gsc-m2m.c
+++ b/drivers/media/platform/exynos-gsc/gsc-m2m.c
@@ -267,8 +267,8 @@ static struct vb2_ops gsc_m2m_qops = {
         .queue_setup     = gsc_m2m_queue_setup,
         .buf_prepare     = gsc_m2m_buf_prepare,
         .buf_queue       = gsc_m2m_buf_queue,
-        .wait_prepare    = gsc_unlock,
-        .wait_finish     = gsc_lock,
+        .wait_prepare    = vb2_ops_wait_prepare,
+        .wait_finish     = vb2_ops_wait_finish,
         .stop_streaming  = gsc_m2m_stop_streaming,
         .start_streaming = gsc_m2m_start_streaming,
 };
@@ -590,6 +590,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
         src_vq->mem_ops = &vb2_dma_contig_memops;
         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+        src_vq->lock = &ctx->gsc_dev->lock;
 
         ret = vb2_queue_init(src_vq);
         if (ret)
@@ -603,6 +604,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
         dst_vq->mem_ops = &vb2_dma_contig_memops;
         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+        dst_vq->lock = &ctx->gsc_dev->lock;
 
         return vb2_queue_init(dst_vq);
 }