Commit | Line | Data |
---|---|---|
9026e0d1 MR |
1 | /* |
2 | * Copyright (C) 2015 Free Electrons | |
3 | * Copyright (C) 2015 NextThing Co | |
4 | * | |
5 | * Maxime Ripard <maxime.ripard@free-electrons.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License as | |
9 | * published by the Free Software Foundation; either version 2 of | |
10 | * the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #include <drm/drmP.h> | |
14 | #include <drm/drm_atomic_helper.h> | |
15 | #include <drm/drm_crtc.h> | |
16 | #include <drm/drm_crtc_helper.h> | |
17 | #include <drm/drm_modes.h> | |
18 | ||
19 | #include <linux/clk-provider.h> | |
20 | #include <linux/ioport.h> | |
21 | #include <linux/of_address.h> | |
22 | #include <linux/of_irq.h> | |
23 | #include <linux/regmap.h> | |
24 | ||
25 | #include <video/videomode.h> | |
26 | ||
27 | #include "sun4i_backend.h" | |
28 | #include "sun4i_crtc.h" | |
29 | #include "sun4i_drv.h" | |
30 | #include "sun4i_tcon.h" | |
31 | ||
32 | static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc, | |
33 | struct drm_crtc_state *old_state) | |
34 | { | |
35 | struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc); | |
36 | struct drm_device *dev = crtc->dev; | |
37 | unsigned long flags; | |
38 | ||
39 | if (crtc->state->event) { | |
40 | WARN_ON(drm_crtc_vblank_get(crtc) != 0); | |
41 | ||
42 | spin_lock_irqsave(&dev->event_lock, flags); | |
43 | scrtc->event = crtc->state->event; | |
44 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
45 | crtc->state->event = NULL; | |
46 | } | |
47 | } | |
48 | ||
49 | static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc, | |
50 | struct drm_crtc_state *old_state) | |
51 | { | |
52 | struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc); | |
53 | struct sun4i_drv *drv = scrtc->drv; | |
54 | ||
55 | DRM_DEBUG_DRIVER("Committing plane changes\n"); | |
56 | ||
57 | sun4i_backend_commit(drv->backend); | |
58 | } | |
59 | ||
60 | static void sun4i_crtc_disable(struct drm_crtc *crtc) | |
61 | { | |
62 | struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc); | |
63 | struct sun4i_drv *drv = scrtc->drv; | |
64 | ||
65 | DRM_DEBUG_DRIVER("Disabling the CRTC\n"); | |
66 | ||
67 | sun4i_tcon_disable(drv->tcon); | |
2cd36830 MR |
68 | |
69 | if (crtc->state->event && !crtc->state->active) { | |
70 | spin_lock_irq(&crtc->dev->event_lock); | |
71 | drm_crtc_send_vblank_event(crtc, crtc->state->event); | |
72 | spin_unlock_irq(&crtc->dev->event_lock); | |
73 | ||
74 | crtc->state->event = NULL; | |
75 | } | |
9026e0d1 MR |
76 | } |
77 | ||
78 | static void sun4i_crtc_enable(struct drm_crtc *crtc) | |
79 | { | |
80 | struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc); | |
81 | struct sun4i_drv *drv = scrtc->drv; | |
82 | ||
83 | DRM_DEBUG_DRIVER("Enabling the CRTC\n"); | |
84 | ||
85 | sun4i_tcon_enable(drv->tcon); | |
86 | } | |
87 | ||
88 | static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = { | |
89 | .atomic_begin = sun4i_crtc_atomic_begin, | |
90 | .atomic_flush = sun4i_crtc_atomic_flush, | |
91 | .disable = sun4i_crtc_disable, | |
92 | .enable = sun4i_crtc_enable, | |
93 | }; | |
94 | ||
95 | static const struct drm_crtc_funcs sun4i_crtc_funcs = { | |
96 | .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, | |
97 | .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, | |
98 | .destroy = drm_crtc_cleanup, | |
99 | .page_flip = drm_atomic_helper_page_flip, | |
100 | .reset = drm_atomic_helper_crtc_reset, | |
101 | .set_config = drm_atomic_helper_set_config, | |
102 | }; | |
103 | ||
104 | struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm) | |
105 | { | |
106 | struct sun4i_drv *drv = drm->dev_private; | |
107 | struct sun4i_crtc *scrtc; | |
108 | int ret; | |
109 | ||
110 | scrtc = devm_kzalloc(drm->dev, sizeof(*scrtc), GFP_KERNEL); | |
111 | if (!scrtc) | |
112 | return NULL; | |
113 | scrtc->drv = drv; | |
114 | ||
115 | ret = drm_crtc_init_with_planes(drm, &scrtc->crtc, | |
116 | drv->primary, | |
117 | NULL, | |
118 | &sun4i_crtc_funcs, | |
119 | NULL); | |
120 | if (ret) { | |
121 | dev_err(drm->dev, "Couldn't init DRM CRTC\n"); | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs); | |
126 | ||
127 | return scrtc; | |
128 | } |