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wsfb: add support for optional "devcmap" property 

A hardware driver can supply a pointer to a 16x 32-bit array to override
the default rasops device colour map in the "devcmap" property.
This commit is contained in:
jmcneill 2024-01-20 00:24:58 +00:00
parent a68fd05250
commit 827749bf33
1 changed files with 15 additions and 3 deletions
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18
sys/dev/wsfb/genfb.c
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@ -1,4 +1,4 @@
/* $NetBSD: genfb.c,v 1.90 2022/08/01 23:30:10 riastradh Exp $ */
/* $NetBSD: genfb.c,v 1.91 2024/01/20 00:24:58 jmcneill Exp $ */
/*-
* Copyright (c) 2007 Michael Lorenz
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.90 2022/08/01 23:30:10 riastradh Exp $");
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.91 2024/01/20 00:24:58 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -85,6 +85,7 @@ struct genfb_private {
struct genfb_parameter_callback *sc_backlight;
struct genfb_parameter_callback *sc_brightness;
struct genfb_mode_callback *sc_modecb;
uint32_t *sc_devcmap;
int sc_backlight_level, sc_backlight_on;
void *sc_shadowfb;
bool sc_enable_shadowfb;
@ -167,7 +168,7 @@ genfb_init(struct genfb_softc *sc)
{
struct genfb_private *scp;
prop_dictionary_t dict;
uint64_t cmap_cb, pmf_cb, mode_cb, bl_cb, br_cb, fbaddr;
uint64_t cmap_cb, pmf_cb, mode_cb, bl_cb, br_cb, devcmap, fbaddr;
uint64_t fboffset;
bool console;
@ -225,6 +226,13 @@ genfb_init(struct genfb_softc *sc)
sc->sc_fbsize = sc->sc_height * sc->sc_stride;
/* optional device colour map */
scp->sc_devcmap = NULL;
if (prop_dictionary_get_uint64(dict, "devcmap", &devcmap)) {
if (devcmap != 0)
scp->sc_devcmap = (uint32_t *)(uintptr_t)devcmap;
}
/* optional colour map callback */
scp->sc_cmcb = NULL;
if (prop_dictionary_get_uint64(dict, "cmap_callback", &cmap_cb)) {
@ -721,6 +729,10 @@ genfb_init_screen(void *cookie, struct vcons_screen *scr,
rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
sc->sc_width / ri->ri_font->fontwidth);
if (scp->sc_devcmap != NULL) {
memcpy(ri->ri_devcmap, scp->sc_devcmap, sizeof(ri->ri_devcmap));
}
ri->ri_hw = scr;
#if GENFB_GLYPHCACHE > 0
scp->sc_putchar = ri->ri_ops.putchar;