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eed07e0e TV |
1 | /* |
2 | * linux/drivers/video/omap2/dss/overlay.c | |
3 | * | |
4 | * Copyright (C) 2009 Nokia Corporation | |
5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> | |
6 | * | |
7 | * Some code and ideas taken from drivers/video/omap/ driver | |
8 | * by Imre Deak. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License version 2 as published by | |
12 | * the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | * more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along with | |
20 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | */ | |
22 | ||
23 | #define DSS_SUBSYS_NAME "OVERLAY" | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/err.h> | |
28 | #include <linux/sysfs.h> | |
eed07e0e TV |
29 | #include <linux/platform_device.h> |
30 | #include <linux/delay.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
eed07e0e | 32 | |
a0b38cc4 | 33 | #include <video/omapdss.h> |
eed07e0e TV |
34 | |
35 | #include "dss.h" | |
a0acb557 | 36 | #include "dss_features.h" |
eed07e0e TV |
37 | |
38 | static int num_overlays; | |
58452341 | 39 | static struct omap_overlay *overlays; |
eed07e0e | 40 | |
eed07e0e TV |
41 | int omap_dss_get_num_overlays(void) |
42 | { | |
43 | return num_overlays; | |
44 | } | |
45 | EXPORT_SYMBOL(omap_dss_get_num_overlays); | |
46 | ||
47 | struct omap_overlay *omap_dss_get_overlay(int num) | |
48 | { | |
58452341 TV |
49 | if (num >= num_overlays) |
50 | return NULL; | |
eed07e0e | 51 | |
58452341 | 52 | return &overlays[num]; |
eed07e0e TV |
53 | } |
54 | EXPORT_SYMBOL(omap_dss_get_overlay); | |
55 | ||
eed07e0e TV |
56 | void dss_init_overlays(struct platform_device *pdev) |
57 | { | |
58 | int i, r; | |
59 | ||
58452341 | 60 | num_overlays = dss_feat_get_num_ovls(); |
eed07e0e | 61 | |
58452341 TV |
62 | overlays = kzalloc(sizeof(struct omap_overlay) * num_overlays, |
63 | GFP_KERNEL); | |
eed07e0e | 64 | |
58452341 | 65 | BUG_ON(overlays == NULL); |
eed07e0e | 66 | |
58452341 TV |
67 | for (i = 0; i < num_overlays; ++i) { |
68 | struct omap_overlay *ovl = &overlays[i]; | |
eed07e0e TV |
69 | |
70 | switch (i) { | |
71 | case 0: | |
72 | ovl->name = "gfx"; | |
73 | ovl->id = OMAP_DSS_GFX; | |
eed07e0e TV |
74 | break; |
75 | case 1: | |
76 | ovl->name = "vid1"; | |
77 | ovl->id = OMAP_DSS_VIDEO1; | |
eed07e0e TV |
78 | break; |
79 | case 2: | |
80 | ovl->name = "vid2"; | |
81 | ovl->id = OMAP_DSS_VIDEO2; | |
eed07e0e | 82 | break; |
b8c095b4 AT |
83 | case 3: |
84 | ovl->name = "vid3"; | |
85 | ovl->id = OMAP_DSS_VIDEO3; | |
b8c095b4 | 86 | break; |
eed07e0e TV |
87 | } |
88 | ||
67019db8 | 89 | ovl->caps = dss_feat_get_overlay_caps(ovl->id); |
a0acb557 AT |
90 | ovl->supported_modes = |
91 | dss_feat_get_supported_color_modes(ovl->id); | |
92 | ||
91691516 | 93 | r = dss_overlay_kobj_init(ovl, pdev); |
58452341 | 94 | if (r) |
eed07e0e | 95 | DSSERR("failed to create sysfs file\n"); |
eed07e0e | 96 | } |
eed07e0e TV |
97 | } |
98 | ||
eed07e0e TV |
99 | void dss_uninit_overlays(struct platform_device *pdev) |
100 | { | |
58452341 TV |
101 | int i; |
102 | ||
103 | for (i = 0; i < num_overlays; ++i) { | |
104 | struct omap_overlay *ovl = &overlays[i]; | |
91691516 | 105 | dss_overlay_kobj_uninit(ovl); |
eed07e0e TV |
106 | } |
107 | ||
58452341 TV |
108 | kfree(overlays); |
109 | overlays = NULL; | |
eed07e0e TV |
110 | num_overlays = 0; |
111 | } | |
112 | ||
54540d41 TV |
113 | int dss_ovl_simple_check(struct omap_overlay *ovl, |
114 | const struct omap_overlay_info *info) | |
115 | { | |
116 | if (info->paddr == 0) { | |
117 | DSSERR("check_overlay: paddr cannot be 0\n"); | |
118 | return -EINVAL; | |
119 | } | |
120 | ||
121 | if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) { | |
122 | if (info->out_width != 0 && info->width != info->out_width) { | |
123 | DSSERR("check_overlay: overlay %d doesn't support " | |
124 | "scaling\n", ovl->id); | |
125 | return -EINVAL; | |
126 | } | |
127 | ||
128 | if (info->out_height != 0 && info->height != info->out_height) { | |
129 | DSSERR("check_overlay: overlay %d doesn't support " | |
130 | "scaling\n", ovl->id); | |
131 | return -EINVAL; | |
132 | } | |
133 | } | |
134 | ||
135 | if ((ovl->supported_modes & info->color_mode) == 0) { | |
136 | DSSERR("check_overlay: overlay %d doesn't support mode %d\n", | |
137 | ovl->id, info->color_mode); | |
138 | return -EINVAL; | |
139 | } | |
140 | ||
141 | if (info->zorder >= omap_dss_get_num_overlays()) { | |
142 | DSSERR("check_overlay: zorder %d too high\n", info->zorder); | |
143 | return -EINVAL; | |
144 | } | |
145 | ||
65e006ff CM |
146 | if (dss_feat_rotation_type_supported(info->rotation_type) == 0) { |
147 | DSSERR("check_overlay: rotation type %d not supported\n", | |
148 | info->rotation_type); | |
149 | return -EINVAL; | |
150 | } | |
151 | ||
54540d41 TV |
152 | return 0; |
153 | } | |
154 | ||
228b2134 AT |
155 | int dss_ovl_check(struct omap_overlay *ovl, struct omap_overlay_info *info, |
156 | const struct omap_video_timings *mgr_timings) | |
6ac48d1e TV |
157 | { |
158 | u16 outw, outh; | |
159 | u16 dw, dh; | |
160 | ||
228b2134 AT |
161 | dw = mgr_timings->x_res; |
162 | dh = mgr_timings->y_res; | |
6ac48d1e TV |
163 | |
164 | if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) { | |
165 | outw = info->width; | |
166 | outh = info->height; | |
167 | } else { | |
168 | if (info->out_width == 0) | |
169 | outw = info->width; | |
170 | else | |
171 | outw = info->out_width; | |
172 | ||
173 | if (info->out_height == 0) | |
174 | outh = info->height; | |
175 | else | |
176 | outh = info->out_height; | |
177 | } | |
178 | ||
179 | if (dw < info->pos_x + outw) { | |
180 | DSSERR("overlay %d horizontally not inside the display area " | |
181 | "(%d + %d >= %d)\n", | |
182 | ovl->id, info->pos_x, outw, dw); | |
183 | return -EINVAL; | |
184 | } | |
185 | ||
186 | if (dh < info->pos_y + outh) { | |
187 | DSSERR("overlay %d vertically not inside the display area " | |
188 | "(%d + %d >= %d)\n", | |
189 | ovl->id, info->pos_y, outh, dh); | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | return 0; | |
194 | } | |
6c6f510a AT |
195 | |
196 | /* | |
197 | * Checks if replication logic should be used. Only use when overlay is in | |
198 | * RGB12U or RGB16 mode, and video port width interface is 18bpp or 24bpp | |
199 | */ | |
200 | bool dss_ovl_use_replication(struct dss_lcd_mgr_config config, | |
201 | enum omap_color_mode mode) | |
202 | { | |
203 | if (mode != OMAP_DSS_COLOR_RGB12U && mode != OMAP_DSS_COLOR_RGB16) | |
204 | return false; | |
205 | ||
206 | return config.video_port_width > 16; | |
207 | } |