Add a 1 second timeout for each PIC_RUN command to the CODA. In case it locks up, stop all queues and dequeue remaining buffers.
Signed-off-by: Philipp Zabel <[email protected]> --- drivers/media/video/coda.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/media/video/coda.c b/drivers/media/video/coda.c index 831cd37..e2c4585 100644 --- a/drivers/media/video/coda.c +++ b/drivers/media/video/coda.c @@ -139,6 +139,7 @@ struct coda_dev { struct vb2_alloc_ctx *alloc_ctx; struct list_head instances; unsigned long instance_mask; + struct delayed_work timeout; }; struct coda_params { @@ -730,6 +731,9 @@ static void coda_device_run(void *m2m_priv) CODA7_REG_BIT_AXI_SRAM_USE); } + /* 1 second timeout in case CODA locks up */ + schedule_delayed_work(&dev->timeout, HZ); + coda_command_async(ctx, CODA_COMMAND_PIC_RUN); } @@ -1500,6 +1504,8 @@ static irqreturn_t coda_irq_handler(int irq, void *data) u32 wr_ptr, start_ptr; struct coda_ctx *ctx; + __cancel_delayed_work(&dev->timeout); + /* read status register to attend the IRQ */ coda_read(dev, CODA_REG_BIT_INT_STATUS); coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET, @@ -1572,6 +1578,20 @@ static irqreturn_t coda_irq_handler(int irq, void *data) return IRQ_HANDLED; } +void coda_timeout(struct work_struct *work) +{ + struct coda_ctx *ctx; + struct coda_dev *dev = container_of(to_delayed_work(work), + struct coda_dev, timeout); + + v4l2_err(&dev->v4l2_dev, "CODA PIC_RUN timeout, stopping all streams\n"); + + list_for_each_entry(ctx, &dev->instances, list) { + v4l2_m2m_streamoff(NULL, ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); + v4l2_m2m_streamoff(NULL, ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); + } +} + static u32 coda_supported_firmwares[] = { CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5), CODA_FIRMWARE_VERNUM(CODA_7541, 13, 4, 29), @@ -1844,6 +1864,7 @@ static int __devinit coda_probe(struct platform_device *pdev) spin_lock_init(&dev->irqlock); INIT_LIST_HEAD(&dev->instances); + INIT_DELAYED_WORK(&dev->timeout, coda_timeout); dev->plat_dev = pdev; dev->clk_per = devm_clk_get(&pdev->dev, "per"); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
