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c8b75bca EA |
1 | /* |
2 | * Copyright (C) 2015 Broadcom | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | /** | |
10 | * DOC: VC4 KMS | |
11 | * | |
12 | * This is the general code for implementing KMS mode setting that | |
13 | * doesn't clearly associate with any of the other objects (plane, | |
14 | * crtc, HDMI encoder). | |
15 | */ | |
16 | ||
17 | #include "drm_crtc.h" | |
18 | #include "drm_atomic_helper.h" | |
19 | #include "drm_crtc_helper.h" | |
20 | #include "drm_plane_helper.h" | |
21 | #include "drm_fb_cma_helper.h" | |
22 | #include "vc4_drv.h" | |
23 | ||
48666d56 DF |
24 | static void vc4_output_poll_changed(struct drm_device *dev) |
25 | { | |
26 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
27 | ||
28 | if (vc4->fbdev) | |
29 | drm_fbdev_cma_hotplug_event(vc4->fbdev); | |
30 | } | |
31 | ||
c8b75bca | 32 | static const struct drm_mode_config_funcs vc4_mode_funcs = { |
48666d56 | 33 | .output_poll_changed = vc4_output_poll_changed, |
c8b75bca EA |
34 | .atomic_check = drm_atomic_helper_check, |
35 | .atomic_commit = drm_atomic_helper_commit, | |
36 | .fb_create = drm_fb_cma_create, | |
37 | }; | |
38 | ||
39 | int vc4_kms_load(struct drm_device *dev) | |
40 | { | |
48666d56 | 41 | struct vc4_dev *vc4 = to_vc4_dev(dev); |
c8b75bca EA |
42 | int ret; |
43 | ||
44 | ret = drm_vblank_init(dev, dev->mode_config.num_crtc); | |
45 | if (ret < 0) { | |
46 | dev_err(dev->dev, "failed to initialize vblank\n"); | |
47 | return ret; | |
48 | } | |
49 | ||
50 | dev->mode_config.max_width = 2048; | |
51 | dev->mode_config.max_height = 2048; | |
52 | dev->mode_config.funcs = &vc4_mode_funcs; | |
53 | dev->mode_config.preferred_depth = 24; | |
98a44504 | 54 | dev->vblank_disable_allowed = true; |
c8b75bca EA |
55 | |
56 | drm_mode_config_reset(dev); | |
57 | ||
48666d56 DF |
58 | vc4->fbdev = drm_fbdev_cma_init(dev, 32, |
59 | dev->mode_config.num_crtc, | |
60 | dev->mode_config.num_connector); | |
61 | if (IS_ERR(vc4->fbdev)) | |
62 | vc4->fbdev = NULL; | |
c8b75bca EA |
63 | |
64 | drm_kms_helper_poll_init(dev); | |
65 | ||
66 | return 0; | |
67 | } |