drivers/gpu/drm/radeon/radeon_irq_kms.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include "drmP.h"
  29 #include "radeon_drm.h"
  30 #include "radeon_reg.h"
  31 #include "radeon_microcode.h"
  32 #include "radeon.h"
  33 #include "atom.h"
  34
  35 irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
  36 {
  37         struct drm_device *dev = (struct drm_device *) arg;
  38         struct radeon_device *rdev = dev->dev_private;
  39
  40         return radeon_irq_process(rdev);
  41 }
  42
  43 void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
  44 {
  45         struct radeon_device *rdev = dev->dev_private;
  46         unsigned i;
  47
  48         /* Disable *all* interrupts */
  49         rdev->irq.sw_int = false;
  50         for (i = 0; i < 2; i++) {
  51                 rdev->irq.crtc_vblank_int[i] = false;
  52         }
  53         radeon_irq_set(rdev);
  54         /* Clear bits */
  55         radeon_irq_process(rdev);
  56 }
  57
  58 int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
  59 {
  60         struct radeon_device *rdev = dev->dev_private;
  61
  62         dev->max_vblank_count = 0x001fffff;
  63         rdev->irq.sw_int = true;
  64         radeon_irq_set(rdev);
  65         return 0;
  66 }
  67
  68 void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
  69 {
  70         struct radeon_device *rdev = dev->dev_private;
  71         unsigned i;
  72
  73         if (rdev == NULL) {
  74                 return;
  75         }
  76         /* Disable *all* interrupts */
  77         rdev->irq.sw_int = false;
  78         for (i = 0; i < 2; i++) {
  79                 rdev->irq.crtc_vblank_int[i] = false;
  80         }
  81         radeon_irq_set(rdev);
  82 }
  83
  84 int radeon_irq_kms_init(struct radeon_device *rdev)
  85 {
  86         int r = 0;
  87
  88         r = drm_vblank_init(rdev->ddev, 2);
  89         if (r) {
  90                 return r;
  91         }
  92         drm_irq_install(rdev->ddev);
  93         rdev->irq.installed = true;
  94         DRM_INFO("radeon: irq initialized.\n");
  95         return 0;
  96 }
  97
  98 void radeon_irq_kms_fini(struct radeon_device *rdev)
  99 {
 100         if (rdev->irq.installed) {
 101                 rdev->irq.installed = false;
 102                 drm_irq_uninstall(rdev->ddev);
 103         }
 104 }