diff options
| author | Jyri Sarha <jsarha@ti.com> | 2016-11-21 18:30:19 +0200 |
|---|---|---|
| committer | Jyri Sarha <jsarha@ti.com> | 2016-11-30 14:20:03 +0200 |
| commit | 3672583f2525ce8220e0667e20b6a59b29782d80 (patch) | |
| tree | 4a95888988d0e36949b715d9354178de88b86d9c /drivers/gpu/drm/tilcdc | |
| parent | 75d7f277eefcbd25c154d81f6836d7fdefaba89c (diff) | |
drm/tilcdc: Enable frame done irq and functionality for LCDC rev 1
We should wait for the last frame to complete before shutting things
down also on LCDC rev 1.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpu/drm/tilcdc')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 18 | ||||
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_regs.h | 1 |
2 files changed, 12 insertions, 7 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index fb2442205424..9942b0577d6e 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -171,7 +171,7 @@ static void tilcdc_crtc_enable_irqs(struct drm_device *dev) if (priv->rev == 1) { tilcdc_set(dev, LCDC_RASTER_CTRL_REG, - LCDC_V1_SYNC_LOST_INT_ENA | + LCDC_V1_SYNC_LOST_INT_ENA | LCDC_V1_FRAME_DONE_INT_ENA | LCDC_V1_UNDERFLOW_INT_ENA); tilcdc_set(dev, LCDC_DMA_CTRL_REG, LCDC_V1_END_OF_FRAME_INT_ENA); @@ -190,7 +190,7 @@ static void tilcdc_crtc_disable_irqs(struct drm_device *dev) /* disable irqs that we might have enabled: */ if (priv->rev == 1) { tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, - LCDC_V1_SYNC_LOST_INT_ENA | + LCDC_V1_SYNC_LOST_INT_ENA | LCDC_V1_FRAME_DONE_INT_ENA | LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA); tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_V1_END_OF_FRAME_INT_ENA); @@ -935,13 +935,17 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc) } } + if (stat & LCDC_FRAME_DONE) { + tilcdc_crtc->frame_done = true; + wake_up(&tilcdc_crtc->frame_done_wq); + /* rev 1 lcdc appears to hang if irq is not disbaled here */ + if (priv->rev == 1) + tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, + LCDC_V1_FRAME_DONE_INT_ENA); + } + /* For revision 2 only */ if (priv->rev == 2) { - if (stat & LCDC_FRAME_DONE) { - tilcdc_crtc->frame_done = true; - wake_up(&tilcdc_crtc->frame_done_wq); - } - /* Indicate to LCDC that the interrupt service routine has * completed, see 13.3.6.1.6 in AM335x TRM. */ diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h index d69a940adbea..9d528c0a67a4 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h @@ -67,6 +67,7 @@ #define LCDC_V1_PL_INT_ENA BIT(4) #define LCDC_V2_PL_INT_ENA BIT(6) #define LCDC_V1_SYNC_LOST_INT_ENA BIT(5) +#define LCDC_V1_FRAME_DONE_INT_ENA BIT(3) #define LCDC_MONOCHROME_MODE BIT(1) #define LCDC_RASTER_ENABLE BIT(0) #define LCDC_TFT_ALT_ENABLE BIT(23) |