andreacavalli/xserver-multidpi
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Add support for setting the video mode.

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This commit is contained in:
Anders Carlsson 2003-12-01 22:11:12 +00:00
parent e31051ba26
commit ae2454f656
1 changed files with 79 additions and 3 deletions
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78
hw/kdrive/fbdev/fbdev.c
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@ -29,6 +29,8 @@
#include "fbdev.h"
#include <sys/ioctl.h>
#include <errno.h>
extern int KdTsPhyScreen;
Bool
@ -108,6 +110,45 @@ fbdevMakeContig (Pixel orig, Pixel others)
}
#endif
static Bool
fbdevModeSupported (KdScreenInfo *screen,
const KdMonitorTiming *t)
{
/* XXX: Remove this */
if (t->rate > 75)
return FALSE;
return TRUE;
}
static void
fbdevConvertMonitorTiming (const KdMonitorTiming *t, struct fb_var_screeninfo *var)
{
memset (var, 0, sizeof (struct fb_var_screeninfo));
var->xres = t->horizontal;
var->yres = t->vertical;
var->xres_virtual = t->horizontal;
var->yres_virtual = t->vertical;
var->xoffset = 0;
var->yoffset = 0;
var->pixclock = t->clock ? 1000000000 / t->clock : 0;
var->left_margin = t->hbp;
var->right_margin = t->hfp;
var->upper_margin = t->vbp;
var->lower_margin = t->vfp;
var->hsync_len = t->hblank - t->hfp - t->hbp;
var->vsync_len = t->vblank - t->vfp - t->vbp;
var->sync = 0;
var->vmode = 0;
if (t->hpol == KdSyncPositive)
var->sync |= FB_SYNC_HOR_HIGH_ACT;
if (t->vpol == KdSyncPositive)
var->sync |= FB_SYNC_VERT_HIGH_ACT;
}
Bool
fbdevScreenInitialize (KdScreenInfo *screen, FbdevScrPriv *scrpriv)
{
@ -115,7 +156,42 @@ fbdevScreenInitialize (KdScreenInfo *screen, FbdevScrPriv *scrpriv)
Pixel allbits;
int depth;
Bool gray;
struct fb_var_screeninfo var;
const KdMonitorTiming *t;
int k;
if (!screen->width || !screen->height)
{
screen->width = 1024;
screen->height = 768;
screen->rate = 72;
}
if (!screen->fb[0].depth)
screen->fb[0].depth = 16;
t = KdFindMode (screen, fbdevModeSupported);
screen->rate = t->rate;
screen->width = t->horizontal;
screen->height = t->vertical;
/* Now try setting the mode */
fbdevConvertMonitorTiming (t, &var);
var.activate = FB_ACTIVATE_NOW;
var.bits_per_pixel = screen->fb[0].depth;
var.nonstd = 0;
var.grayscale = 0;
k = ioctl (priv->fd, FBIOPUT_VSCREENINFO, &var);
if (k < 0)
{
fprintf (stderr, "error: %s\n", strerror (errno));
return FALSE;
}
/* Now get the new screeninfo */
ioctl (priv->fd, FBIOGET_VSCREENINFO, &priv->var);
depth = priv->var.bits_per_pixel;
gray = priv->var.grayscale;
@ -188,7 +264,7 @@ fbdevScreenInitialize (KdScreenInfo *screen, FbdevScrPriv *scrpriv)
}
screen->fb[0].depth = depth;
screen->fb[0].bitsPerPixel = priv->var.bits_per_pixel;
screen->rate = 72;
scrpriv->randr = screen->randr;
return fbdevMapFramebuffer (screen);