diff options
Diffstat (limited to 'shared-core/mga_irq.c')
| -rw-r--r-- | shared-core/mga_irq.c | 53 |
1 files changed, 26 insertions, 27 deletions
diff --git a/shared-core/mga_irq.c b/shared-core/mga_irq.c index bc0b6b5d..704652d3 100644 --- a/shared-core/mga_irq.c +++ b/shared-core/mga_irq.c @@ -1,7 +1,7 @@ /* mga_irq.c -- IRQ handling for radeon -*- linux-c -*- * * Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. - * + * * The Weather Channel (TM) funded Tungsten Graphics to develop the * initial release of the Radeon 8500 driver under the XFree86 license. * This notice must be preserved. @@ -35,68 +35,67 @@ #include "mga_drm.h" #include "mga_drv.h" -irqreturn_t mga_driver_irq_handler( DRM_IRQ_ARGS ) +irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) { drm_device_t *dev = (drm_device_t *) arg; - drm_mga_private_t *dev_priv = - (drm_mga_private_t *)dev->dev_private; + drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; int status; - status = MGA_READ( MGA_STATUS ); - + status = MGA_READ(MGA_STATUS); + /* VBLANK interrupt */ - if ( status & MGA_VLINEPEN ) { - MGA_WRITE( MGA_ICLEAR, MGA_VLINEICLR ); + 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 ); + drm_vbl_send_signals(dev); return IRQ_HANDLED; } return IRQ_NONE; } -int mga_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence) +int mga_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence) { unsigned int cur_vblank; int ret = 0; /* Assume that the user has missed the current sequence number * by about a day rather than she wants to wait for years - * using vertical blanks... + * using vertical blanks... */ - DRM_WAIT_ON( ret, dev->vbl_queue, 3*DRM_HZ, - ( ( ( cur_vblank = atomic_read(&dev->vbl_received ) ) - - *sequence ) <= (1<<23) ) ); + DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ, + (((cur_vblank = atomic_read(&dev->vbl_received)) + - *sequence) <= (1 << 23))); *sequence = cur_vblank; return ret; } -void mga_driver_irq_preinstall( drm_device_t *dev ) { - drm_mga_private_t *dev_priv = - (drm_mga_private_t *)dev->dev_private; +void mga_driver_irq_preinstall(drm_device_t * dev) +{ + drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; /* Disable *all* interrupts */ - MGA_WRITE( MGA_IEN, 0 ); + MGA_WRITE(MGA_IEN, 0); /* Clear bits if they're already high */ - MGA_WRITE( MGA_ICLEAR, ~0 ); + MGA_WRITE(MGA_ICLEAR, ~0); } -void mga_driver_irq_postinstall( drm_device_t *dev ) { - drm_mga_private_t *dev_priv = - (drm_mga_private_t *)dev->dev_private; +void mga_driver_irq_postinstall(drm_device_t * dev) +{ + drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; /* Turn on VBL interrupt */ - MGA_WRITE( MGA_IEN, MGA_VLINEIEN ); + MGA_WRITE(MGA_IEN, MGA_VLINEIEN); } -void mga_driver_irq_uninstall( drm_device_t *dev ) { - drm_mga_private_t *dev_priv = - (drm_mga_private_t *)dev->dev_private; +void mga_driver_irq_uninstall(drm_device_t * dev) +{ + drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; if (!dev_priv) return; /* Disable *all* interrupts */ - MGA_WRITE( MGA_IEN, 0 ); + MGA_WRITE(MGA_IEN, 0); } |