diff options
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c deleted file mode 100644 index d327638e15ee..000000000000 --- a/drivers/gpu/drm/drm_irq.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * drm_irq.c IRQ and vblank support - * - * \author Rickard E. (Rik) Faith <faith@valinux.com> - * \author Gareth Hughes <gareth@valinux.com> - * - * 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 - * VA LINUX SYSTEMS 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. - */ - -/* - * Created: Fri Mar 19 14:30:16 1999 by faith@valinux.com - * - * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * All Rights Reserved. - * - * 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 - * VA LINUX SYSTEMS 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. - */ - - -#include <linux/export.h> -#include <linux/interrupt.h> /* For task queue support */ -#include <linux/pci.h> -#include <linux/vgaarb.h> - -#include <drm/drm.h> -#include <drm/drm_device.h> -#include <drm/drm_drv.h> -#include <drm/drm_legacy.h> -#include <drm/drm_print.h> -#include <drm/drm_vblank.h> - -#include "drm_internal.h" - -static int drm_legacy_irq_install(struct drm_device *dev, int irq) -{ - int ret; - unsigned long sh_flags = 0; - - if (irq == 0) - return -EINVAL; - - if (dev->irq_enabled) - return -EBUSY; - dev->irq_enabled = true; - - DRM_DEBUG("irq=%d\n", irq); - - /* Before installing handler */ - if (dev->driver->irq_preinstall) - dev->driver->irq_preinstall(dev); - - /* PCI devices require shared interrupts. */ - if (dev_is_pci(dev->dev)) - sh_flags = IRQF_SHARED; - - ret = request_irq(irq, dev->driver->irq_handler, - sh_flags, dev->driver->name, dev); - - if (ret < 0) { - dev->irq_enabled = false; - return ret; - } - - /* After installing handler */ - if (dev->driver->irq_postinstall) - ret = dev->driver->irq_postinstall(dev); - - if (ret < 0) { - dev->irq_enabled = false; - if (drm_core_check_feature(dev, DRIVER_LEGACY)) - vga_client_unregister(to_pci_dev(dev->dev)); - free_irq(irq, dev); - } else { - dev->irq = irq; - } - - return ret; -} - -int drm_legacy_irq_uninstall(struct drm_device *dev) -{ - unsigned long irqflags; - bool irq_enabled; - int i; - - irq_enabled = dev->irq_enabled; - dev->irq_enabled = false; - - /* - * Wake up any waiters so they don't hang. This is just to paper over - * issues for UMS drivers which aren't in full control of their - * vblank/irq handling. KMS drivers must ensure that vblanks are all - * disabled when uninstalling the irq handler. - */ - if (drm_dev_has_vblank(dev)) { - spin_lock_irqsave(&dev->vbl_lock, irqflags); - for (i = 0; i < dev->num_crtcs; i++) { - struct drm_vblank_crtc *vblank = &dev->vblank[i]; - - if (!vblank->enabled) - continue; - - WARN_ON(drm_core_check_feature(dev, DRIVER_MODESET)); - - drm_vblank_disable_and_save(dev, i); - wake_up(&vblank->queue); - } - spin_unlock_irqrestore(&dev->vbl_lock, irqflags); - } - - if (!irq_enabled) - return -EINVAL; - - DRM_DEBUG("irq=%d\n", dev->irq); - - if (drm_core_check_feature(dev, DRIVER_LEGACY)) - vga_client_unregister(to_pci_dev(dev->dev)); - - if (dev->driver->irq_uninstall) - dev->driver->irq_uninstall(dev); - - free_irq(dev->irq, dev); - - return 0; -} -EXPORT_SYMBOL(drm_legacy_irq_uninstall); - -int drm_legacy_irq_control(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_control *ctl = data; - int ret = 0, irq; - struct pci_dev *pdev; - - /* if we haven't irq we fallback for compatibility reasons - - * this used to be a separate function in drm_dma.h - */ - - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) - return 0; - if (!drm_core_check_feature(dev, DRIVER_LEGACY)) - return 0; - /* UMS was only ever supported on pci devices. */ - if (WARN_ON(!dev_is_pci(dev->dev))) - return -EINVAL; - - switch (ctl->func) { - case DRM_INST_HANDLER: - pdev = to_pci_dev(dev->dev); - irq = pdev->irq; - - if (dev->if_version < DRM_IF_VERSION(1, 2) && - ctl->irq != irq) - return -EINVAL; - mutex_lock(&dev->struct_mutex); - ret = drm_legacy_irq_install(dev, irq); - mutex_unlock(&dev->struct_mutex); - - return ret; - case DRM_UNINST_HANDLER: - mutex_lock(&dev->struct_mutex); - ret = drm_legacy_irq_uninstall(dev); - mutex_unlock(&dev->struct_mutex); - - return ret; - default: - return -EINVAL; - } -} |