diff options
Diffstat (limited to 'hw/kdrive/fbdev/fbdev.c')
| -rw-r--r-- | hw/kdrive/fbdev/fbdev.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/hw/kdrive/fbdev/fbdev.c b/hw/kdrive/fbdev/fbdev.c new file mode 100644 index 000000000..c268ae2b1 --- /dev/null +++ b/hw/kdrive/fbdev/fbdev.c @@ -0,0 +1,256 @@ +/* + * $Id$ + * + * 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. + */ +/* $XFree86: $ */ + +#include "fbdev.h" + +Bool +fbdevInitialize (KdCardInfo *card, FbdevPriv *priv) +{ + int k; + if ((priv->fd = open("/dev/fb0", O_RDWR)) < 0) { + perror("Error opening /dev/fb0\n"); + return FALSE; + } + if ((k=ioctl(priv->fd, FBIOGET_FSCREENINFO, &priv->fix)) < 0) { + perror("Error with /dev/fb ioctl FIOGET_FSCREENINFO"); + close (priv->fd); + return FALSE; + } + 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 = (unsigned char *) mmap ((caddr_t) NULL, + priv->fix.smem_len, + PROT_READ|PROT_WRITE, + MAP_SHARED, + priv->fd, 0); + + if (priv->fb == (char *)-1) + { + perror("ERROR: mmap framebuffer fails!"); + close (priv->fd); + return FALSE; + } +} + +Bool +fbdevCardInit (KdCardInfo *card) +{ + int k; + char *pixels; + FbdevPriv *priv; + + priv = (FbdevPriv *) xalloc (sizeof (FbdevPriv)); + if (!priv) + return FALSE; + + if (!fbdevInitialize (card, priv)) + { + xfree (priv); + return FALSE; + } + card->driver = priv; + + return TRUE; +} + +Bool +fbdevScreenInit (KdScreenInfo *screen) +{ + FbdevPriv *priv = screen->card->driver; + Pixel allbits; + int depth; + + screen->width = priv->var.xres; + screen->height = priv->var.yres; + screen->depth = priv->var.bits_per_pixel; + screen->bitsPerPixel = priv->var.bits_per_pixel; + screen->byteStride = priv->fix.line_length; + screen->pixelStride = (priv->fix.line_length * 8 / + priv->var.bits_per_pixel); + switch (priv->fix.visual) { + case FB_VISUAL_PSEUDOCOLOR: + screen->visuals = ((1 << StaticGray) | + (1 << GrayScale) | + (1 << StaticColor) | + (1 << PseudoColor) | + (1 << TrueColor) | + (1 << DirectColor)); + screen->blueMask = 0x00; + screen->greenMask = 0x00; + screen->redMask = 0x00; + break; + case FB_VISUAL_TRUECOLOR: + screen->visuals = (1 << TrueColor); + screen->redMask = FbStipMask (priv->var.red.offset, priv->var.red.length); + screen->greenMask = FbStipMask (priv->var.green.offset, priv->var.green.length); + screen->blueMask = FbStipMask (priv->var.blue.offset, priv->var.blue.length); + allbits = screen->redMask | screen->greenMask | screen->blueMask; + depth = 32; + while (depth && !(allbits & (1 << (depth - 1)))) + depth--; + screen->depth = depth; + break; + default: + return FALSE; + break; + } + screen->rate = 72; + screen->frameBuffer = (CARD8 *) (priv->fb); + return TRUE; +} + +void +fbdevPreserve (KdCardInfo *card) +{ +} + +void +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"); +} + +Bool +fbdevDPMS (ScreenPtr pScreen, int mode) +{ + KdScreenPriv(pScreen); + FbdevPriv *priv = pScreenPriv->card->driver; + + if (!ioctl (priv->fd, FBIOPUT_POWERMODE, &mode)) + return TRUE; + return FALSE; +} + +void +fbdevDisable (ScreenPtr pScreen) +{ +} + +void +fbdevRestore (KdCardInfo *card) +{ +} + +void +fbdevScreenFini (KdScreenInfo *screen) +{ +} + +void +fbdevCardFini (KdCardInfo *card) +{ + int k; + FbdevPriv *priv = card->driver; + + munmap (priv->fb, priv->fix.smem_len); + close (priv->fd); + xfree (priv); +} + +void +fbdevGetColors (ScreenPtr pScreen, 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 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); +} |