This allows userspace to terminate a capture without waiting for the current
frame to complete.
Signed-off-by: Baruch Siach <bar...@tkos.co.il>
---
drivers/media/video/mx2_camera.c | 20 ++++++++++++++++----
1 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c
index d327d11..396542b 100644
--- a/drivers/media/video/mx2_camera.c
+++ b/drivers/media/video/mx2_camera.c
@@ -648,15 +648,27 @@ static void mx2_videobuf_release(struct videobuf_queue
*vq,
* Terminate only queued but inactive buffers. Active buffers are
* released when they become inactive after videobuf_waiton().
*
- * FIXME: implement forced termination of active buffers, so that the
- * user won't get stuck in an uninterruptible state. This requires a
- * specific handling for each of the three DMA types that this driver
- * supports.
+ * FIXME: implement forced termination of active buffers for mx27 and
+ * mx27 eMMA, so that the user won't get stuck in an uninterruptible
+ * state. This requires a specific handling for each of the these DMA
+ * types.
*/
spin_lock_irqsave(&pcdev->lock, flags);
if (vb->state == VIDEOBUF_QUEUED) {
list_del(&vb->queue);
vb->state = VIDEOBUF_ERROR;
+ } else if (cpu_is_mx25() && vb->state == VIDEOBUF_ACTIVE) {
+ if (pcdev->fb1_active == buf) {
+ pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN;
+ writel(0, pcdev->base_csi + CSIDMASA_FB1);
+ pcdev->fb1_active = NULL;
+ } else if (pcdev->fb2_active == buf) {
+ pcdev->csicr1 &= ~CSICR1_FB2_DMA_INTEN;
+ writel(0, pcdev->base_csi + CSIDMASA_FB2);
+ pcdev->fb2_active = NULL;
+ }
+ writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
+ vb->state = VIDEOBUF_ERROR;
}
spin_unlock_irqrestore(&pcdev->lock, flags);
--
1.7.1
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