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 }
105