| 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 | |