diff options
Diffstat (limited to 'shared/mga_irq.c')
| -rw-r--r-- | shared/mga_irq.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/shared/mga_irq.c b/shared/mga_irq.c index 28e9a262d..b3e674bd5 100644 --- a/shared/mga_irq.c +++ b/shared/mga_irq.c @@ -36,6 +36,8 @@ #include "mga_drm.h" #include "mga_drv.h" +#define IDR_VBLANK_HACK 1 + void mga_dma_service( DRM_IRQ_ARGS ) { drm_device_t *dev = (drm_device_t *) arg; @@ -46,12 +48,21 @@ void mga_dma_service( DRM_IRQ_ARGS ) status = MGA_READ( MGA_STATUS ); /* VBLANK interrupt */ +#if IDR_VBLANK_HACK + if ( status & 0x08 ) { + MGA_WRITE( MGA_ICLEAR, status ); + atomic_inc(&dev->vbl_received); + DRM_WAKEUP(&dev->vbl_queue); + DRM(vbl_send_signals)( dev ); + } +#else if ( status & MGA_VLINEPEN ) { MGA_WRITE( MGA_ICLEAR, MGA_VLINEICLR ); atomic_inc(&dev->vbl_received); DRM_WAKEUP(&dev->vbl_queue); DRM(vbl_send_signals)( dev ); } +#endif } int mga_vblank_wait(drm_device_t *dev, unsigned int *sequence) @@ -87,7 +98,11 @@ void mga_driver_irq_postinstall( drm_device_t *dev ) { (drm_mga_private_t *)dev->dev_private; /* Turn on VBL interrupt */ +#if IDR_VBLANK_HACK + MGA_WRITE( MGA_IEN, 0x0000000c ); +#else MGA_WRITE( MGA_IEN, MGA_VLINEIEN ); +#endif } void mga_driver_irq_uninstall( drm_device_t *dev ) { |