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drm/tilcdc: Add prints on sync lost and FIFO underrun interrupts

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Add ratelimited prints on sync lost and FIFO underrun interrupts.

Signed-off-by: Jyri Sarha <[email protected]>
Reviewed-by: Tomi Valkeinen <[email protected]>
This commit is contained in:
Jyri Sarha 2015-12-18 13:07:52 +02:00
commit c0c2baaab1
2 changed files with 10 additions and 2 deletions
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8
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
View file

@ -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;
}

4
drivers/gpu/drm/tilcdc/tilcdc_drv.c
View file

@ -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);
}
}