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Commit | Line | Data |
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864ee9e6 JS |
1 | /* |
2 | * Copyright (C) 2011 Samsung Electronics Co.Ltd | |
3 | * Authors: Joonyoung Shim <jy0922.shim@samsung.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the | |
7 | * Free Software Foundation; either version 2 of the License, or (at your | |
8 | * option) any later version. | |
9 | * | |
10 | */ | |
11 | ||
760285e7 | 12 | #include <drm/drmP.h> |
864ee9e6 | 13 | |
760285e7 | 14 | #include <drm/exynos_drm.h> |
adf5691c | 15 | #include <drm/drm_plane_helper.h> |
4ea9526b | 16 | #include <drm/drm_atomic_helper.h> |
864ee9e6 | 17 | #include "exynos_drm_drv.h" |
080be03d | 18 | #include "exynos_drm_crtc.h" |
4070d212 JS |
19 | #include "exynos_drm_fb.h" |
20 | #include "exynos_drm_gem.h" | |
e30655d0 | 21 | #include "exynos_drm_plane.h" |
864ee9e6 | 22 | |
2ab97921 JS |
23 | /* |
24 | * This function is to get X or Y size shown via screen. This needs length and | |
25 | * start position of CRTC. | |
26 | * | |
27 | * <--- length ---> | |
28 | * CRTC ---------------- | |
29 | * ^ start ^ end | |
30 | * | |
60a705a9 | 31 | * There are six cases from a to f. |
2ab97921 JS |
32 | * |
33 | * <----- SCREEN -----> | |
34 | * 0 last | |
35 | * ----------|------------------|---------- | |
36 | * CRTCs | |
37 | * a ------- | |
38 | * b ------- | |
39 | * c -------------------------- | |
40 | * d -------- | |
41 | * e ------- | |
42 | * f ------- | |
43 | */ | |
44 | static int exynos_plane_get_size(int start, unsigned length, unsigned last) | |
45 | { | |
46 | int end = start + length; | |
47 | int size = 0; | |
48 | ||
49 | if (start <= 0) { | |
50 | if (end > 0) | |
51 | size = min_t(unsigned, end, last); | |
52 | } else if (start <= last) { | |
53 | size = min_t(unsigned, last - start, length); | |
54 | } | |
55 | ||
56 | return size; | |
57 | } | |
58 | ||
d5f5223c GP |
59 | static void exynos_plane_mode_set(struct drm_plane *plane, |
60 | struct drm_crtc *crtc, | |
61 | struct drm_framebuffer *fb, | |
62 | int crtc_x, int crtc_y, | |
63 | unsigned int crtc_w, unsigned int crtc_h, | |
64 | uint32_t src_x, uint32_t src_y, | |
65 | uint32_t src_w, uint32_t src_h) | |
adf5691c GP |
66 | { |
67 | struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); | |
020e79de | 68 | struct drm_display_mode *mode = &crtc->state->adjusted_mode; |
adf5691c GP |
69 | unsigned int actual_w; |
70 | unsigned int actual_h; | |
71 | ||
020e79de JS |
72 | actual_w = exynos_plane_get_size(crtc_x, crtc_w, mode->hdisplay); |
73 | actual_h = exynos_plane_get_size(crtc_y, crtc_h, mode->vdisplay); | |
2ab97921 JS |
74 | |
75 | if (crtc_x < 0) { | |
76 | if (actual_w) | |
77 | src_x -= crtc_x; | |
2ab97921 JS |
78 | crtc_x = 0; |
79 | } | |
80 | ||
81 | if (crtc_y < 0) { | |
82 | if (actual_h) | |
83 | src_y -= crtc_y; | |
2ab97921 JS |
84 | crtc_y = 0; |
85 | } | |
4070d212 | 86 | |
3cabaf7e JS |
87 | /* set ratio */ |
88 | exynos_plane->h_ratio = (src_w << 16) / crtc_w; | |
89 | exynos_plane->v_ratio = (src_h << 16) / crtc_h; | |
90 | ||
4070d212 | 91 | /* set drm framebuffer data. */ |
cb8a3db2 JS |
92 | exynos_plane->src_x = src_x; |
93 | exynos_plane->src_y = src_y; | |
d88d2463 GP |
94 | exynos_plane->src_w = (actual_w * exynos_plane->h_ratio) >> 16; |
95 | exynos_plane->src_h = (actual_h * exynos_plane->v_ratio) >> 16; | |
8837deea GP |
96 | |
97 | /* set plane range to be displayed. */ | |
98 | exynos_plane->crtc_x = crtc_x; | |
99 | exynos_plane->crtc_y = crtc_y; | |
d88d2463 GP |
100 | exynos_plane->crtc_w = actual_w; |
101 | exynos_plane->crtc_h = actual_h; | |
102 | ||
8837deea GP |
103 | DRM_DEBUG_KMS("plane : offset_x/y(%d,%d), width/height(%d,%d)", |
104 | exynos_plane->crtc_x, exynos_plane->crtc_y, | |
d88d2463 | 105 | exynos_plane->crtc_w, exynos_plane->crtc_h); |
4070d212 | 106 | |
72ed6ccd | 107 | plane->crtc = crtc; |
4070d212 JS |
108 | } |
109 | ||
864ee9e6 | 110 | static struct drm_plane_funcs exynos_plane_funcs = { |
910874a8 GP |
111 | .update_plane = drm_atomic_helper_update_plane, |
112 | .disable_plane = drm_atomic_helper_disable_plane, | |
97464d7d | 113 | .destroy = drm_plane_cleanup, |
4ea9526b GP |
114 | .reset = drm_atomic_helper_plane_reset, |
115 | .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, | |
116 | .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, | |
864ee9e6 JS |
117 | }; |
118 | ||
43dbdad2 GP |
119 | static int exynos_plane_atomic_check(struct drm_plane *plane, |
120 | struct drm_plane_state *state) | |
121 | { | |
d5f5223c GP |
122 | struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); |
123 | int nr; | |
124 | int i; | |
125 | ||
126 | if (!state->fb) | |
127 | return 0; | |
128 | ||
faec262b | 129 | nr = drm_format_num_planes(state->fb->pixel_format); |
d5f5223c | 130 | for (i = 0; i < nr; i++) { |
813fd67b JS |
131 | struct exynos_drm_gem *exynos_gem = |
132 | exynos_drm_fb_gem(state->fb, i); | |
133 | if (!exynos_gem) { | |
2a8cb489 | 134 | DRM_DEBUG_KMS("gem object is null\n"); |
d5f5223c GP |
135 | return -EFAULT; |
136 | } | |
137 | ||
813fd67b | 138 | exynos_plane->dma_addr[i] = exynos_gem->dma_addr + |
d5f5223c GP |
139 | state->fb->offsets[i]; |
140 | ||
141 | DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n", | |
142 | i, (unsigned long)exynos_plane->dma_addr[i]); | |
143 | } | |
144 | ||
145 | return 0; | |
43dbdad2 GP |
146 | } |
147 | ||
148 | static void exynos_plane_atomic_update(struct drm_plane *plane, | |
149 | struct drm_plane_state *old_state) | |
150 | { | |
151 | struct drm_plane_state *state = plane->state; | |
d5f5223c GP |
152 | struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(state->crtc); |
153 | struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); | |
43dbdad2 GP |
154 | |
155 | if (!state->crtc) | |
156 | return; | |
157 | ||
d5f5223c GP |
158 | exynos_plane_mode_set(plane, state->crtc, state->fb, |
159 | state->crtc_x, state->crtc_y, | |
160 | state->crtc_w, state->crtc_h, | |
161 | state->src_x >> 16, state->src_y >> 16, | |
162 | state->src_w >> 16, state->src_h >> 16); | |
163 | ||
822f6dfd GP |
164 | exynos_plane->pending_fb = state->fb; |
165 | ||
9cc7610a | 166 | if (exynos_crtc->ops->update_plane) |
1e1d1393 | 167 | exynos_crtc->ops->update_plane(exynos_crtc, exynos_plane); |
43dbdad2 GP |
168 | } |
169 | ||
b744868c GP |
170 | static void exynos_plane_atomic_disable(struct drm_plane *plane, |
171 | struct drm_plane_state *old_state) | |
172 | { | |
173 | struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); | |
174 | struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(old_state->crtc); | |
175 | ||
176 | if (!old_state->crtc) | |
177 | return; | |
178 | ||
9cc7610a GP |
179 | if (exynos_crtc->ops->disable_plane) |
180 | exynos_crtc->ops->disable_plane(exynos_crtc, | |
1e1d1393 | 181 | exynos_plane); |
b744868c GP |
182 | } |
183 | ||
43dbdad2 GP |
184 | static const struct drm_plane_helper_funcs plane_helper_funcs = { |
185 | .atomic_check = exynos_plane_atomic_check, | |
186 | .atomic_update = exynos_plane_atomic_update, | |
b744868c | 187 | .atomic_disable = exynos_plane_atomic_disable, |
43dbdad2 GP |
188 | }; |
189 | ||
6e2a3b66 GP |
190 | static void exynos_plane_attach_zpos_property(struct drm_plane *plane, |
191 | unsigned int zpos) | |
00ae67cf JS |
192 | { |
193 | struct drm_device *dev = plane->dev; | |
194 | struct exynos_drm_private *dev_priv = dev->dev_private; | |
195 | struct drm_property *prop; | |
196 | ||
00ae67cf JS |
197 | prop = dev_priv->plane_zpos_property; |
198 | if (!prop) { | |
92104886 GP |
199 | prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, |
200 | "zpos", 0, MAX_PLANE - 1); | |
00ae67cf JS |
201 | if (!prop) |
202 | return; | |
203 | ||
204 | dev_priv->plane_zpos_property = prop; | |
205 | } | |
206 | ||
6e2a3b66 | 207 | drm_object_attach_property(&plane->base, prop, zpos); |
00ae67cf JS |
208 | } |
209 | ||
323db0ed GP |
210 | enum drm_plane_type exynos_plane_get_type(unsigned int zpos, |
211 | unsigned int cursor_win) | |
212 | { | |
213 | if (zpos == DEFAULT_WIN) | |
214 | return DRM_PLANE_TYPE_PRIMARY; | |
215 | else if (zpos == cursor_win) | |
216 | return DRM_PLANE_TYPE_CURSOR; | |
217 | else | |
218 | return DRM_PLANE_TYPE_OVERLAY; | |
219 | } | |
220 | ||
7ee14cdc GP |
221 | int exynos_plane_init(struct drm_device *dev, |
222 | struct exynos_drm_plane *exynos_plane, | |
6e2a3b66 | 223 | unsigned long possible_crtcs, enum drm_plane_type type, |
fbbb1e1a | 224 | const uint32_t *formats, unsigned int fcount, |
6e2a3b66 | 225 | unsigned int zpos) |
864ee9e6 | 226 | { |
b5d2eb3b | 227 | int err; |
864ee9e6 | 228 | |
72ed6ccd | 229 | err = drm_universal_plane_init(dev, &exynos_plane->base, possible_crtcs, |
fbbb1e1a MS |
230 | &exynos_plane_funcs, formats, fcount, |
231 | type); | |
b5d2eb3b JS |
232 | if (err) { |
233 | DRM_ERROR("failed to initialize plane\n"); | |
7ee14cdc | 234 | return err; |
b5d2eb3b JS |
235 | } |
236 | ||
43dbdad2 GP |
237 | drm_plane_helper_add(&exynos_plane->base, &plane_helper_funcs); |
238 | ||
6e2a3b66 GP |
239 | exynos_plane->zpos = zpos; |
240 | ||
241 | if (type == DRM_PLANE_TYPE_OVERLAY) | |
242 | exynos_plane_attach_zpos_property(&exynos_plane->base, zpos); | |
864ee9e6 | 243 | |
7ee14cdc | 244 | return 0; |
864ee9e6 | 245 | } |