1 | /* $NetBSD: wsdisplay_util.c,v 1.2 2013/01/31 10:57:31 macallan Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2011 Michael Lorenz |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | /* some utility functions for use with wsdisplay */ |
30 | |
31 | #include <sys/param.h> |
32 | #include <sys/stdint.h> |
33 | #include <sys/systm.h> |
34 | #include <sys/buf.h> |
35 | #include <sys/device.h> |
36 | #include <dev/cons.h> |
37 | |
38 | #include <dev/wscons/wsdisplayvar.h> |
39 | #include <dev/rasops/rasops.h> |
40 | #include <dev/wscons/wsconsio.h> |
41 | |
42 | int |
43 | wsdisplayio_get_edid(device_t dev, struct wsdisplayio_edid_info *d) |
44 | { |
45 | prop_data_t edid_data; |
46 | int edid_size; |
47 | |
48 | edid_data = prop_dictionary_get(device_properties(dev), "EDID" ); |
49 | if (edid_data != NULL) { |
50 | edid_size = prop_data_size(edid_data); |
51 | /* less than 128 bytes is bogus */ |
52 | if (edid_size < 128) |
53 | return ENODEV; |
54 | d->data_size = edid_size; |
55 | if (d->buffer_size < edid_size) |
56 | return EAGAIN; |
57 | return copyout(prop_data_data_nocopy(edid_data), |
58 | d->edid_data, edid_size); |
59 | } |
60 | return ENODEV; |
61 | } |
62 | |
63 | /* convenience function to fill in stuff from rasops_info */ |
64 | int |
65 | wsdisplayio_get_fbinfo(struct rasops_info *ri, struct wsdisplayio_fbinfo *fbi) |
66 | { |
67 | fbi->fbi_width = ri->ri_width; |
68 | fbi->fbi_height = ri->ri_height; |
69 | fbi->fbi_stride = ri->ri_stride; |
70 | fbi->fbi_bitsperpixel = ri->ri_depth; |
71 | if (ri->ri_depth > 8) { |
72 | fbi->fbi_pixeltype = WSFB_RGB; |
73 | fbi->fbi_subtype.fbi_rgbmasks.red_offset = ri->ri_rpos; |
74 | fbi->fbi_subtype.fbi_rgbmasks.red_size = ri->ri_rnum; |
75 | fbi->fbi_subtype.fbi_rgbmasks.green_offset = ri->ri_gpos; |
76 | fbi->fbi_subtype.fbi_rgbmasks.green_size = ri->ri_gnum; |
77 | fbi->fbi_subtype.fbi_rgbmasks.blue_offset = ri->ri_bpos; |
78 | fbi->fbi_subtype.fbi_rgbmasks.blue_size = ri->ri_bnum; |
79 | fbi->fbi_subtype.fbi_rgbmasks.alpha_offset = 0; |
80 | fbi->fbi_subtype.fbi_rgbmasks.alpha_size = 0; |
81 | } else { |
82 | fbi->fbi_pixeltype = WSFB_CI; |
83 | fbi->fbi_subtype.fbi_cmapinfo.cmap_entries = 1 << ri->ri_depth; |
84 | } |
85 | fbi->fbi_flags = 0; |
86 | fbi->fbi_fbsize = ri->ri_stride * ri->ri_height; |
87 | fbi->fbi_fboffset = 0; |
88 | return 0; |
89 | } |
90 | |