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Add "is_swapped" property which indicates 32-bpp framebuffer is

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byte-swapped.
This commit is contained in:
rin 2020-10-19 01:08:06 +00:00
parent fe46bc211a
commit d8d16b1107
1 changed files with 15 additions and 9 deletions
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24
sys/dev/wsfb/genfb.c
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@ -1,4 +1,4 @@
/* $NetBSD: genfb.c,v 1.77 2020/10/18 12:47:37 rin Exp $ */
/* $NetBSD: genfb.c,v 1.78 2020/10/19 01:08:06 rin Exp $ */
/*-
* Copyright (c) 2007 Michael Lorenz
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.77 2020/10/18 12:47:37 rin Exp $");
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.78 2020/10/19 01:08:06 rin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -539,7 +539,7 @@ genfb_init_screen(void *cookie, struct vcons_screen *scr,
struct genfb_softc *sc = cookie;
struct rasops_info *ri = &scr->scr_ri;
int wantcols;
bool is_bgr;
bool is_bgr, is_swapped;
ri->ri_depth = sc->sc_depth;
ri->ri_width = sc->sc_width;
@ -565,24 +565,30 @@ genfb_init_screen(void *cookie, struct vcons_screen *scr,
switch (ri->ri_depth) {
case 32:
case 24:
ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 8;
ri->ri_flg |= RI_ENABLE_ALPHA;
is_bgr = false;
prop_dictionary_get_bool(device_properties(sc->sc_dev),
"is_bgr", &is_bgr);
is_swapped = false;
prop_dictionary_get_bool(device_properties(sc->sc_dev),
"is_swapped", &is_swapped);
if (is_bgr) {
/* someone requested BGR */
ri->ri_rnum = 8;
ri->ri_gnum = 8;
ri->ri_bnum = 8;
ri->ri_rpos = 0;
ri->ri_gpos = 8;
ri->ri_bpos = 16;
} else if (is_swapped) {
/* byte-swapped, must be 32 bpp */
KASSERT(ri->ri_depth == 32);
ri->ri_rpos = 8;
ri->ri_gpos = 16;
ri->ri_bpos = 24;
} else {
/* assume RGB */
ri->ri_rnum = 8;
ri->ri_gnum = 8;
ri->ri_bnum = 8;
ri->ri_rpos = 16;
ri->ri_gpos = 8;
ri->ri_bpos = 0;