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xserver-multidpi/hw/kdrive/fbdev/fbdev.c

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/*
* Id: fbdev.c,v 1.1 1999/11/02 03:54:46 keithp Exp $
*
* Copyright © 1999 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $RCSId: xc/programs/Xserver/hw/kdrive/fbdev/fbdev.c,v 1.31 2002/10/14 18:01:40 keithp Exp $ */
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "fbdev.h"
#include <sys/ioctl.h>
#include <errno.h>
extern int KdTsPhyScreen;
Bool
fbdevInitialize (KdCardInfo *card, FbdevPriv *priv)
{
int k;
unsigned long off;
if ((priv->fd = open("/dev/fb0", O_RDWR)) < 0 && \
(priv->fd = open("/dev/fb/0", O_RDWR)) < 0) {
perror("Error opening /dev/fb0");
return FALSE;
}
/* quiet valgrind */
memset (&priv->fix, '\0', sizeof (priv->fix));
if ((k=ioctl(priv->fd, FBIOGET_FSCREENINFO, &priv->fix)) < 0) {
perror("Error with /dev/fb ioctl FIOGET_FSCREENINFO");
close (priv->fd);
return FALSE;
}
/* quiet valgrind */
memset (&priv->var, '\0', sizeof (priv->var));
if ((k=ioctl(priv->fd, FBIOGET_VSCREENINFO, &priv->var)) < 0) {
perror("Error with /dev/fb ioctl FIOGET_VSCREENINFO");
close (priv->fd);
return FALSE;
}
priv->fb_base = (char *) mmap ((caddr_t) NULL,
priv->fix.smem_len,
PROT_READ|PROT_WRITE,
MAP_SHARED,
priv->fd, 0);
if (priv->fb_base == (char *)-1)
{
perror("ERROR: mmap framebuffer fails!");
close (priv->fd);
return FALSE;
}
off = (unsigned long) priv->fix.smem_start % (unsigned long) getpagesize();
priv->fb = priv->fb_base + off;
return TRUE;
}
Bool
fbdevCardInit (KdCardInfo *card)
{
FbdevPriv *priv;
priv = (FbdevPriv *) xalloc (sizeof (FbdevPriv));
if (!priv)
return FALSE;
if (!fbdevInitialize (card, priv))
{
xfree (priv);
return FALSE;
}
card->driver = priv;
return TRUE;
}
#define FBDEV_KLUDGE_FORMAT
#ifdef FBDEV_KLUDGE_FORMAT
static Pixel
fbdevMakeContig (Pixel orig, Pixel others)
{
Pixel low;
low = lowbit (orig) >> 1;
while (low && (others & low) == 0)
{
orig |= low;
low >>= 1;
}
return orig;
}
#endif
static Bool
fbdevModeSupported (KdScreenInfo *screen,
const KdMonitorTiming *t)
{
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)
{
FbdevPriv *priv = screen->card->driver;
Pixel allbits;
int depth;
Bool gray;
struct fb_var_screeninfo var;
const KdMonitorTiming *t;
int k;
k = ioctl (priv->fd, FBIOGET_VSCREENINFO, &var);
if (!screen->width || !screen->height)
{
if (k >= 0)
{
screen->width = var.xres;
screen->height = var.yres;
}
else
{
screen->width = 1024;
screen->height = 768;
}
screen->rate = 103; /* FIXME: should get proper value from fb driver */
}
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 */
if (k < 0 || (t->horizontal != var.xres || t->vertical != var.yres))
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;
}
/* Re-get the "fixed" parameters since they might have changed */
k = ioctl (priv->fd, FBIOGET_FSCREENINFO, &priv->fix);
if (k < 0)
perror ("FBIOGET_FSCREENINFO");
/* Now get the new screeninfo */
ioctl (priv->fd, FBIOGET_VSCREENINFO, &priv->var);
depth = priv->var.bits_per_pixel;
gray = priv->var.grayscale;
switch (priv->fix.visual) {
case FB_VISUAL_PSEUDOCOLOR:
if (gray)
{
screen->fb[0].visuals = (1 << StaticGray);
/* could also support GrayScale, but what's the point? */
}
else
{
screen->fb[0].visuals = ((1 << StaticGray) |
(1 << GrayScale) |
(1 << StaticColor) |
(1 << PseudoColor) |
(1 << TrueColor) |
(1 << DirectColor));
}
screen->fb[0].blueMask = 0x00;
screen->fb[0].greenMask = 0x00;
screen->fb[0].redMask = 0x00;
break;
case FB_VISUAL_STATIC_PSEUDOCOLOR:
if (gray)
{
screen->fb[0].visuals = (1 << StaticGray);
}
else
{
screen->fb[0].visuals = (1 << StaticColor);
}
screen->fb[0].blueMask = 0x00;
screen->fb[0].greenMask = 0x00;
screen->fb[0].redMask = 0x00;
break;
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_DIRECTCOLOR:
screen->fb[0].visuals = (1 << TrueColor);
#define Mask(o,l) (((1 << l) - 1) << o)
screen->fb[0].redMask = Mask (priv->var.red.offset, priv->var.red.length);
screen->fb[0].greenMask = Mask (priv->var.green.offset, priv->var.green.length);
screen->fb[0].blueMask = Mask (priv->var.blue.offset, priv->var.blue.length);
#ifdef FBDEV_KLUDGE_FORMAT
/*
* This is a kludge so that Render will work -- fill in the gaps
* in the pixel
*/
screen->fb[0].redMask = fbdevMakeContig (screen->fb[0].redMask,
screen->fb[0].greenMask|
screen->fb[0].blueMask);
screen->fb[0].greenMask = fbdevMakeContig (screen->fb[0].greenMask,
screen->fb[0].redMask|
screen->fb[0].blueMask);
screen->fb[0].blueMask = fbdevMakeContig (screen->fb[0].blueMask,
screen->fb[0].redMask|
screen->fb[0].greenMask);
#endif
allbits = screen->fb[0].redMask | screen->fb[0].greenMask | screen->fb[0].blueMask;
depth = 32;
while (depth && !(allbits & (1 << (depth - 1))))
depth--;
break;
default:
return FALSE;
break;
}
screen->fb[0].depth = depth;
screen->fb[0].bitsPerPixel = priv->var.bits_per_pixel;
scrpriv->randr = screen->randr;
return fbdevMapFramebuffer (screen);
}
Bool
fbdevScreenInit (KdScreenInfo *screen)
{
FbdevScrPriv *scrpriv;
scrpriv = xalloc (sizeof (FbdevScrPriv));
if (!scrpriv)
return FALSE;
memset (scrpriv, '\0', sizeof (FbdevScrPriv));
screen->driver = scrpriv;
if (!fbdevScreenInitialize (screen, scrpriv))
{
screen->driver = 0;
xfree (scrpriv);
return FALSE;
}
return TRUE;
}
void *
fbdevWindowLinear (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size,
void *closure)
{
KdScreenPriv(pScreen);
FbdevPriv *priv = pScreenPriv->card->driver;
if (!pScreenPriv->enabled)
return 0;
*size = priv->fix.line_length;
return (CARD8 *) priv->fb + row * priv->fix.line_length + offset;
}
Bool
fbdevMapFramebuffer (KdScreenInfo *screen)
{
FbdevScrPriv *scrpriv = screen->driver;
KdMouseMatrix m;
FbdevPriv *priv = screen->card->driver;
if (scrpriv->randr != RR_Rotate_0)
scrpriv->shadow = TRUE;
else
scrpriv->shadow = FALSE;
KdComputeMouseMatrix (&m, scrpriv->randr, screen->width, screen->height);
KdSetMouseMatrix (&m);
screen->width = priv->var.xres;
screen->height = priv->var.yres;
screen->memory_base = (CARD8 *) (priv->fb);
screen->memory_size = priv->fix.smem_len;
if (scrpriv->shadow)
{
if (!KdShadowFbAlloc (screen, 0,
scrpriv->randr & (RR_Rotate_90|RR_Rotate_270)))
return FALSE;
screen->off_screen_base = screen->memory_size;
}
else
{
screen->fb[0].byteStride = priv->fix.line_length;
screen->fb[0].pixelStride = (priv->fix.line_length * 8 /
priv->var.bits_per_pixel);
screen->fb[0].frameBuffer = (CARD8 *) (priv->fb);
screen->off_screen_base = screen->fb[0].byteStride * screen->height;
}
return TRUE;
}
void
fbdevSetScreenSizes (ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
FbdevScrPriv *scrpriv = screen->driver;
FbdevPriv *priv = screen->card->driver;
if (scrpriv->randr & (RR_Rotate_0|RR_Rotate_180))
{
pScreen->width = priv->var.xres;
pScreen->height = priv->var.yres;
pScreen->mmWidth = screen->width_mm;
pScreen->mmHeight = screen->height_mm;
}
else
{
pScreen->width = priv->var.yres;
pScreen->height = priv->var.xres;
pScreen->mmWidth = screen->height_mm;
pScreen->mmHeight = screen->width_mm;
}
}
Bool
fbdevUnmapFramebuffer (KdScreenInfo *screen)
{
KdShadowFbFree (screen, 0);
return TRUE;
}
Bool
fbdevSetShadow (ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
FbdevScrPriv *scrpriv = screen->driver;
FbdevPriv *priv = screen->card->driver;
ShadowUpdateProc update;
ShadowWindowProc window;
int useYX = 0;
#ifdef __arm__
/* Use variant copy routines that always read left to right in the
shadow framebuffer. Reading vertical strips is exceptionally
slow on XScale due to cache effects. */
useYX = 1;
#endif
window = fbdevWindowLinear;
update = 0;
if (scrpriv->randr)
if (priv->var.bits_per_pixel == 16) {
switch (scrpriv->randr) {
case RR_Rotate_90:
if (useYX)
update = shadowUpdateRotate16_90YX;
else
update = shadowUpdateRotate16_90;
break;
case RR_Rotate_180:
update = shadowUpdateRotate16_180;
break;
case RR_Rotate_270:
if (useYX)
update = shadowUpdateRotate16_270YX;
else
update = shadowUpdateRotate16_270;
break;
default:
update = shadowUpdateRotate16;
break;
}
} else
update = shadowUpdateRotatePacked;
else
update = shadowUpdatePacked;
return KdShadowSet (pScreen, scrpriv->randr, update, window);
}
#ifdef RANDR
Bool
fbdevRandRGetInfo (ScreenPtr pScreen, Rotation *rotations)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
FbdevScrPriv *scrpriv = screen->driver;
RRScreenSizePtr pSize;
Rotation randr;
int n;
*rotations = RR_Rotate_All|RR_Reflect_All;
for (n = 0; n < pScreen->numDepths; n++)
if (pScreen->allowedDepths[n].numVids)
break;
if (n == pScreen->numDepths)
return FALSE;
pSize = RRRegisterSize (pScreen,
screen->width,
screen->height,
screen->width_mm,
screen->height_mm);
randr = KdSubRotation (scrpriv->randr, screen->randr);
RRSetCurrentConfig (pScreen, randr, 0, pSize);
return TRUE;
}
Bool
fbdevRandRSetConfig (ScreenPtr pScreen,
Rotation randr,
int rate,
RRScreenSizePtr pSize)
{
KdScreenPriv(pScreen);
KdScreenInfo *screen = pScreenPriv->screen;
FbdevScrPriv *scrpriv = screen->driver;
Bool wasEnabled = pScreenPriv->enabled;
FbdevScrPriv oldscr;
int oldwidth;
int oldheight;
int oldmmwidth;
int oldmmheight;
int newwidth, newheight;
if (screen->randr & (RR_Rotate_0|RR_Rotate_180))
{
newwidth = pSize->width;
newheight = pSize->height;
}
else
{
newwidth = pSize->height;
newheight = pSize->width;
}
if (wasEnabled)
KdDisableScreen (pScreen);
oldscr = *scrpriv;
oldwidth = screen->width;
oldheight = screen->height;
oldmmwidth = pScreen->mmWidth;
oldmmheight = pScreen->mmHeight;
/*
* Set new configuration
*/
scrpriv->randr = KdAddRotation (screen->randr, randr);
KdOffscreenSwapOut (screen->pScreen);
fbdevUnmapFramebuffer (screen);
if (!fbdevMapFramebuffer (screen))
goto bail4;
KdShadowUnset (screen->pScreen);
if (!fbdevSetShadow (screen->pScreen))
goto bail4;
fbdevSetScreenSizes (screen->pScreen);
/*
* Set frame buffer mapping
*/
(*pScreen->ModifyPixmapHeader) (fbGetScreenPixmap (pScreen),
pScreen->width,
pScreen->height,
screen->fb[0].depth,
screen->fb[0].bitsPerPixel,
screen->fb[0].byteStride,
screen->fb[0].frameBuffer);
/* set the subpixel order */
KdSetSubpixelOrder (pScreen, scrpriv->randr);
if (wasEnabled)
KdEnableScreen (pScreen);
return TRUE;
bail4:
fbdevUnmapFramebuffer (screen);
*scrpriv = oldscr;
(void) fbdevMapFramebuffer (screen);
pScreen->width = oldwidth;
pScreen->height = oldheight;
pScreen->mmWidth = oldmmwidth;
pScreen->mmHeight = oldmmheight;
if (wasEnabled)
KdEnableScreen (pScreen);
return FALSE;
}
Bool
fbdevRandRInit (ScreenPtr pScreen)
{
rrScrPrivPtr pScrPriv;
if (!RRScreenInit (pScreen))
return FALSE;
pScrPriv = rrGetScrPriv(pScreen);
pScrPriv->rrGetInfo = fbdevRandRGetInfo;
pScrPriv->rrSetConfig = fbdevRandRSetConfig;
return TRUE;
}
#endif
Bool
fbdevCreateColormap (ColormapPtr pmap)
{
ScreenPtr pScreen = pmap->pScreen;
KdScreenPriv(pScreen);
FbdevPriv *priv = pScreenPriv->card->driver;
VisualPtr pVisual;
int i;
int nent;
xColorItem *pdefs;
switch (priv->fix.visual) {
case FB_VISUAL_STATIC_PSEUDOCOLOR:
pVisual = pmap->pVisual;
nent = pVisual->ColormapEntries;
pdefs = ALLOCATE_LOCAL (nent * sizeof (xColorItem));
if (!pdefs)
return FALSE;
for (i = 0; i < nent; i++)
pdefs[i].pixel = i;
fbdevGetColors (pScreen, 0, nent, pdefs);
for (i = 0; i < nent; i++)
{
pmap->red[i].co.local.red = pdefs[i].red;
pmap->red[i].co.local.green = pdefs[i].green;
pmap->red[i].co.local.blue = pdefs[i].blue;
}
DEALLOCATE_LOCAL (pdefs);
return TRUE;
default:
return fbInitializeColormap (pmap);
}
}
Bool
fbdevInitScreen (ScreenPtr pScreen)
{
#ifdef TOUCHSCREEN
KdTsPhyScreen = pScreen->myNum;
#endif
pScreen->CreateColormap = fbdevCreateColormap;
return TRUE;
}
Bool
fbdevFinishInitScreen (ScreenPtr pScreen)
{
if (!shadowSetup (pScreen))
return FALSE;
#ifdef RANDR
if (!fbdevRandRInit (pScreen))
return FALSE;
#endif
return TRUE;
}
Bool
fbdevCreateResources (ScreenPtr pScreen)
{
return fbdevSetShadow (pScreen);
}
void
fbdevPreserve (KdCardInfo *card)
{
}
Bool
fbdevEnable (ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
FbdevPriv *priv = pScreenPriv->card->driver;
int k;
priv->var.activate = FB_ACTIVATE_NOW|FB_CHANGE_CMAP_VBL;
/* display it on the LCD */
k = ioctl (priv->fd, FBIOPUT_VSCREENINFO, &priv->var);
if (k < 0)
{
perror ("FBIOPUT_VSCREENINFO");
return FALSE;
}
if (priv->fix.visual == FB_VISUAL_DIRECTCOLOR)
{
struct fb_cmap cmap;
int i;
for (i = 0;
i < (1 << priv->var.red.length) ||
i < (1 << priv->var.green.length) ||
i < (1 << priv->var.blue.length); i++)
{
priv->red[i] = i * 65535 / ((1 << priv->var.red.length) - 1);
priv->green[i] = i * 65535 / ((1 << priv->var.green.length) - 1);
priv->blue[i] = i * 65535 / ((1 << priv->var.blue.length) - 1);
}
cmap.start = 0;
cmap.len = i;
cmap.red = &priv->red[0];
cmap.green = &priv->green[0];
cmap.blue = &priv->blue[0];
cmap.transp = 0;
ioctl (priv->fd, FBIOPUTCMAP, &cmap);
}
return TRUE;
}
Bool
fbdevDPMS (ScreenPtr pScreen, int mode)
{
KdScreenPriv(pScreen);
FbdevPriv *priv = pScreenPriv->card->driver;
static int oldmode = -1;
if (mode == oldmode)
return TRUE;
#ifdef FBIOPUT_POWERMODE
if (ioctl (priv->fd, FBIOPUT_POWERMODE, &mode) >= 0)
{
oldmode = mode;
return TRUE;
}
#endif
#ifdef FBIOBLANK
if (ioctl (priv->fd, FBIOBLANK, mode ? mode + 1 : 0) >= 0)
{
oldmode = mode;
return TRUE;
}
#endif
return FALSE;
}
void
fbdevDisable (ScreenPtr pScreen)
{
}
void
fbdevRestore (KdCardInfo *card)
{
}
void
fbdevScreenFini (KdScreenInfo *screen)
{
}
void
fbdevCardFini (KdCardInfo *card)
{
FbdevPriv *priv = card->driver;
munmap (priv->fb_base, priv->fix.smem_len);
close (priv->fd);
xfree (priv);
}
void
fbdevGetColors (ScreenPtr pScreen, int fb, int n, xColorItem *pdefs)
{
KdScreenPriv(pScreen);
FbdevPriv *priv = pScreenPriv->card->driver;
struct fb_cmap cmap;
int p;
int k;
int min, max;
min = 256;
max = 0;
for (k = 0; k < n; k++)
{
if (pdefs[k].pixel < min)
min = pdefs[k].pixel;
if (pdefs[k].pixel > max)
max = pdefs[k].pixel;
}
cmap.start = min;
cmap.len = max - min + 1;
cmap.red = &priv->red[min];
cmap.green = &priv->green[min];;
cmap.blue = &priv->blue[min];
cmap.transp = 0;
k = ioctl (priv->fd, FBIOGETCMAP, &cmap);
if (k < 0)
{
perror ("can't get colormap");
return;
}
while (n--)
{
p = pdefs->pixel;
pdefs->red = priv->red[p];
pdefs->green = priv->green[p];
pdefs->blue = priv->blue[p];
pdefs++;
}
}
void
fbdevPutColors (ScreenPtr pScreen, int fb, int n, xColorItem *pdefs)
{
KdScreenPriv(pScreen);
FbdevPriv *priv = pScreenPriv->card->driver;
struct fb_cmap cmap;
int p;
int min, max;
min = 256;
max = 0;
while (n--)
{
p = pdefs->pixel;
priv->red[p] = pdefs->red;
priv->green[p] = pdefs->green;
priv->blue[p] = pdefs->blue;
if (p < min)
min = p;
if (p > max)
max = p;
pdefs++;
}
cmap.start = min;
cmap.len = max - min + 1;
cmap.red = &priv->red[min];
cmap.green = &priv->green[min];
cmap.blue = &priv->blue[min];
cmap.transp = 0;
ioctl (priv->fd, FBIOPUTCMAP, &cmap);
}
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