diff options
Diffstat (limited to 'shared/mga_irq.c')
| -rw-r--r-- | shared/mga_irq.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/shared/mga_irq.c b/shared/mga_irq.c deleted file mode 100644 index c3185b0b..00000000 --- a/shared/mga_irq.c +++ /dev/null @@ -1,103 +0,0 @@ -/* 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. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Authors: - * Keith Whitwell <keith@tungstengraphics.com> - * Eric Anholt <anholt@FreeBSD.org> - */ - -#include "mga.h" -#include "drmP.h" -#include "drm.h" -#include "mga_drm.h" -#include "mga_drv.h" - -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; - int status; - - status = MGA_READ( MGA_STATUS ); - - /* VBLANK interrupt */ - 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 ); - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -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... - */ - 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; - - /* Disable *all* interrupts */ - MGA_WRITE( MGA_IEN, 0 ); - /* Clear bits if they're already high */ - 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; - - /* Turn on VBL interrupt */ - 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; - if (!dev_priv) - return; - - /* Disable *all* interrupts */ - MGA_WRITE( MGA_IEN, 0 ); -} |