Author: ray
Date: Sun Jan 13 22:05:46 2013
New Revision: 245389
URL: http://svnweb.freebsd.org/changeset/base/245389
Log:
Enable syscons framebuffer support for bcm2835. It makes possible to run Xorg
on Raspberry Pi.
o convert mmap address to physical.
o add FBIOGTYPE ioctl handler - allow to get screen resolution by new
xf86-video-scfb driver.
Originally designed for "Efika MX" project.
Sponsored by: FreeBSD Foundation
Modified:
head/sys/arm/broadcom/bcm2835/bcm2835_fb.c
Modified: head/sys/arm/broadcom/bcm2835/bcm2835_fb.c
==============================================================================
--- head/sys/arm/broadcom/bcm2835/bcm2835_fb.c Sun Jan 13 21:32:40 2013
(r245388)
+++ head/sys/arm/broadcom/bcm2835/bcm2835_fb.c Sun Jan 13 22:05:46 2013
(r245389)
@@ -136,6 +136,7 @@ struct video_adapter_softc {
int console;
intptr_t fb_addr;
+ intptr_t fb_paddr;
unsigned int fb_size;
unsigned int height;
@@ -222,6 +223,7 @@ bcm_fb_init(void *arg)
fb_config->screen_size);
va_sc->fb_addr = (intptr_t)pmap_mapdev(fb_config->base,
fb_config->screen_size);
+ va_sc->fb_paddr = fb_config->base;
va_sc->fb_size = fb_config->screen_size;
va_sc->depth = fb_config->bpp;
va_sc->stride = fb_config->pitch;
@@ -795,7 +797,7 @@ bcmfb_mmap(video_adapter_t *adp, vm_ooff
* framebuffer, since it shouldn't be touched
*/
if (offset < sc->stride*sc->height) {
- *paddr = sc->fb_addr + offset;
+ *paddr = sc->fb_paddr + offset;
return (0);
}
@@ -805,6 +807,27 @@ bcmfb_mmap(video_adapter_t *adp, vm_ooff
static int
bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
{
+ struct video_adapter_softc *sc;
+ struct fbtype *fb;
+
+ sc = (struct video_adapter_softc *)adp;
+
+ switch (cmd) {
+ case FBIOGTYPE:
+ fb = (struct fbtype *)data;
+ fb->fb_type = FBTYPE_PCIMISC;
+ fb->fb_height = sc->height;
+ fb->fb_width = sc->width;
+ fb->fb_depth = sc->depth;
+ if (sc->depth <= 1 || sc->depth > 8)
+ fb->fb_cmsize = 0;
+ else
+ fb->fb_cmsize = 1 << sc->depth;
+ fb->fb_size = sc->fb_size;
+ break;
+ default:
+ return (fb_commonioctl(adp, cmd, data));
+ }
return (0);
}
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