1/*
2 * Copyright © 2013 Keith Packard
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission.  The copyright holders make no representations
11 * about the suitability of this software for any purpose.  It is provided "as
12 * is" without express or implied warranty.
13 *
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
20 * OF THIS SOFTWARE.
21 */
22
23#include "dri3_priv.h"
24
25#include <drm_fourcc.h>
26
27static int dri3_request;
28DevPrivateKeyRec dri3_screen_private_key;
29
30static int dri3_screen_generation;
31
32static Bool
33dri3_close_screen(ScreenPtr screen)
34{
35    dri3_screen_priv_ptr screen_priv = dri3_screen_priv(screen);
36
37    unwrap(screen_priv, screen, CloseScreen);
38
39    free(screen_priv);
40    return (*screen->CloseScreen) (screen);
41}
42
43Bool
44dri3_screen_init(ScreenPtr screen, const dri3_screen_info_rec *info)
45{
46    dri3_screen_generation = serverGeneration;
47
48    if (!dixRegisterPrivateKey(&dri3_screen_private_key, PRIVATE_SCREEN, 0))
49        return FALSE;
50
51    if (!dri3_screen_priv(screen)) {
52        dri3_screen_priv_ptr screen_priv = calloc(1, sizeof (dri3_screen_priv_rec));
53        if (!screen_priv)
54            return FALSE;
55
56        wrap(screen_priv, screen, CloseScreen, dri3_close_screen);
57
58        screen_priv->info = info;
59
60        dixSetPrivate(&screen->devPrivates, &dri3_screen_private_key, screen_priv);
61    }
62
63    return TRUE;
64}
65
66void
67dri3_extension_init(void)
68{
69    ExtensionEntry *extension;
70    int i;
71
72    /* If no screens support DRI3, there's no point offering the
73     * extension at all
74     */
75    if (dri3_screen_generation != serverGeneration)
76        return;
77
78#ifdef PANORAMIX
79    if (!noPanoramiXExtension)
80        return;
81#endif
82
83    extension = AddExtension(DRI3_NAME, DRI3NumberEvents, DRI3NumberErrors,
84                             proc_dri3_dispatch, sproc_dri3_dispatch,
85                             NULL, StandardMinorOpcode);
86    if (!extension)
87        goto bail;
88
89    dri3_request = extension->base;
90
91    for (i = 0; i < screenInfo.numScreens; i++) {
92        if (!dri3_screen_init(screenInfo.screens[i], NULL))
93            goto bail;
94    }
95    return;
96
97bail:
98    FatalError("Cannot initialize DRI3 extension");
99}
100
101uint32_t
102drm_format_for_depth(uint32_t depth, uint32_t bpp)
103{
104    switch (bpp) {
105        case 16:
106            return DRM_FORMAT_RGB565;
107        case 24:
108            return DRM_FORMAT_XRGB8888;
109        case 30:
110            return DRM_FORMAT_XRGB2101010;
111        case 32:
112            return DRM_FORMAT_ARGB8888;
113        default:
114            return 0;
115    }
116}
117