From c0c2baaab1b553df92a24e9175440f15e6ad3e2c Mon Sep 17 00:00:00 2001 From: Jyri Sarha Date: Fri, 18 Dec 2015 13:07:52 +0200 Subject: drm/tilcdc: Add prints on sync lost and FIFO underrun interrupts Add ratelimited prints on sync lost and FIFO underrun interrupts. Signed-off-by: Jyri Sarha Reviewed-by: Tomi Valkeinen diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index b1df046..5ee22c6 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -717,6 +717,14 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc) tilcdc_write(dev, LCDC_END_OF_INT_IND_REG, 0); } + if (stat & LCDC_SYNC_LOST) + dev_err_ratelimited(dev->dev, "%s(0x%08x): Sync lost", + __func__, stat); + + if (stat & LCDC_FIFO_UNDERFLOW) + dev_err_ratelimited(dev->dev, "%s(0x%08x): FIFO underfow", + __func__, stat); + return IRQ_HANDLED; } diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index d96083d..41ec890 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -382,7 +382,7 @@ static int tilcdc_irq_postinstall(struct drm_device *dev) tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG, LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_END_OF_FRAME0_INT_ENA | - LCDC_FRAME_DONE); + LCDC_FRAME_DONE | LCDC_SYNC_LOST); } return 0; @@ -401,7 +401,7 @@ static void tilcdc_irq_uninstall(struct drm_device *dev) tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG, LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA | LCDC_V2_END_OF_FRAME0_INT_ENA | - LCDC_FRAME_DONE); + LCDC_FRAME_DONE | LCDC_SYNC_LOST); } } -- cgit v0.10.2