740 lines
20 KiB
C
740 lines
20 KiB
C
/*
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*
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* Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.
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*
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* (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
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*
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* Portions Copyright (c) 2001 Matrox Graphics Inc.
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*
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* Version: 1.65 2002/08/14
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*
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*/
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#include "matroxfb_maven.h"
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#include "matroxfb_crtc2.h"
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#include "matroxfb_misc.h"
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#include "matroxfb_DAC1064.h"
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#include <linux/matroxfb.h>
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#include <linux/uaccess.h>
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/* **************************************************** */
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static int mem = 8192;
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module_param(mem, int, 0);
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MODULE_PARM_DESC(mem, "Memory size reserved for dualhead (default=8MB)");
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/* **************************************************** */
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static int matroxfb_dh_setcolreg(unsigned regno, unsigned red, unsigned green,
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unsigned blue, unsigned transp, struct fb_info* info) {
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u_int32_t col;
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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if (regno >= 16)
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return 1;
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if (m2info->fbcon.var.grayscale) {
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/* gray = 0.30*R + 0.59*G + 0.11*B */
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red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
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}
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red = CNVT_TOHW(red, m2info->fbcon.var.red.length);
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green = CNVT_TOHW(green, m2info->fbcon.var.green.length);
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blue = CNVT_TOHW(blue, m2info->fbcon.var.blue.length);
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transp = CNVT_TOHW(transp, m2info->fbcon.var.transp.length);
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col = (red << m2info->fbcon.var.red.offset) |
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(green << m2info->fbcon.var.green.offset) |
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(blue << m2info->fbcon.var.blue.offset) |
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(transp << m2info->fbcon.var.transp.offset);
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switch (m2info->fbcon.var.bits_per_pixel) {
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case 16:
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m2info->cmap[regno] = col | (col << 16);
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break;
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case 32:
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m2info->cmap[regno] = col;
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break;
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}
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return 0;
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#undef m2info
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}
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static void matroxfb_dh_restore(struct matroxfb_dh_fb_info* m2info,
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struct my_timming* mt,
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int mode,
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unsigned int pos) {
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u_int32_t tmp;
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u_int32_t datactl;
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struct matrox_fb_info *minfo = m2info->primary_dev;
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switch (mode) {
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case 15:
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tmp = 0x00200000;
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break;
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case 16:
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tmp = 0x00400000;
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break;
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/* case 32: */
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default:
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tmp = 0x00800000;
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break;
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}
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tmp |= 0x00000001; /* enable CRTC2 */
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datactl = 0;
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if (minfo->outputs[1].src == MATROXFB_SRC_CRTC2) {
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if (minfo->devflags.g450dac) {
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tmp |= 0x00000006; /* source from secondary pixel PLL */
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/* no vidrst when in monitor mode */
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if (minfo->outputs[1].mode != MATROXFB_OUTPUT_MODE_MONITOR) {
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tmp |= 0xC0001000; /* Enable H/V vidrst */
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}
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} else {
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tmp |= 0x00000002; /* source from VDOCLK */
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tmp |= 0xC0000000; /* enable vvidrst & hvidrst */
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/* MGA TVO is our clock source */
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}
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} else if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) {
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tmp |= 0x00000004; /* source from pixclock */
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/* PIXPLL is our clock source */
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}
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if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) {
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tmp |= 0x00100000; /* connect CRTC2 to DAC */
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}
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if (mt->interlaced) {
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tmp |= 0x02000000; /* interlaced, second field is bigger, as G450 apparently ignores it */
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mt->VDisplay >>= 1;
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mt->VSyncStart >>= 1;
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mt->VSyncEnd >>= 1;
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mt->VTotal >>= 1;
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}
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if ((mt->HTotal & 7) == 2) {
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datactl |= 0x00000010;
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mt->HTotal &= ~7;
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}
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tmp |= 0x10000000; /* 0x10000000 is VIDRST polarity */
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mga_outl(0x3C14, ((mt->HDisplay - 8) << 16) | (mt->HTotal - 8));
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mga_outl(0x3C18, ((mt->HSyncEnd - 8) << 16) | (mt->HSyncStart - 8));
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mga_outl(0x3C1C, ((mt->VDisplay - 1) << 16) | (mt->VTotal - 1));
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mga_outl(0x3C20, ((mt->VSyncEnd - 1) << 16) | (mt->VSyncStart - 1));
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mga_outl(0x3C24, ((mt->VSyncStart) << 16) | (mt->HSyncStart)); /* preload */
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{
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u_int32_t linelen = m2info->fbcon.var.xres_virtual * (m2info->fbcon.var.bits_per_pixel >> 3);
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if (tmp & 0x02000000) {
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/* field #0 is smaller, so... */
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mga_outl(0x3C2C, pos); /* field #1 vmemory start */
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mga_outl(0x3C28, pos + linelen); /* field #0 vmemory start */
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linelen <<= 1;
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m2info->interlaced = 1;
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} else {
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mga_outl(0x3C28, pos); /* vmemory start */
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m2info->interlaced = 0;
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}
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mga_outl(0x3C40, linelen);
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}
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mga_outl(0x3C4C, datactl); /* data control */
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if (tmp & 0x02000000) {
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int i;
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mga_outl(0x3C10, tmp & ~0x02000000);
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for (i = 0; i < 2; i++) {
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unsigned int nl;
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unsigned int lastl = 0;
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while ((nl = mga_inl(0x3C48) & 0xFFF) >= lastl) {
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lastl = nl;
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}
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}
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}
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mga_outl(0x3C10, tmp);
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minfo->hw.crtc2.ctl = tmp;
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tmp = mt->VDisplay << 16; /* line compare */
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if (mt->sync & FB_SYNC_HOR_HIGH_ACT)
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tmp |= 0x00000100;
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if (mt->sync & FB_SYNC_VERT_HIGH_ACT)
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tmp |= 0x00000200;
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mga_outl(0x3C44, tmp);
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}
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static void matroxfb_dh_disable(struct matroxfb_dh_fb_info* m2info) {
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struct matrox_fb_info *minfo = m2info->primary_dev;
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mga_outl(0x3C10, 0x00000004); /* disable CRTC2, CRTC1->DAC1, PLL as clock source */
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minfo->hw.crtc2.ctl = 0x00000004;
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}
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static void matroxfb_dh_pan_var(struct matroxfb_dh_fb_info* m2info,
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struct fb_var_screeninfo* var) {
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unsigned int pos;
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unsigned int linelen;
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unsigned int pixelsize;
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struct matrox_fb_info *minfo = m2info->primary_dev;
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m2info->fbcon.var.xoffset = var->xoffset;
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m2info->fbcon.var.yoffset = var->yoffset;
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pixelsize = m2info->fbcon.var.bits_per_pixel >> 3;
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linelen = m2info->fbcon.var.xres_virtual * pixelsize;
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pos = m2info->fbcon.var.yoffset * linelen + m2info->fbcon.var.xoffset * pixelsize;
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pos += m2info->video.offbase;
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if (m2info->interlaced) {
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mga_outl(0x3C2C, pos);
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mga_outl(0x3C28, pos + linelen);
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} else {
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mga_outl(0x3C28, pos);
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}
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}
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static int matroxfb_dh_decode_var(struct matroxfb_dh_fb_info* m2info,
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struct fb_var_screeninfo* var,
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int *visual,
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int *video_cmap_len,
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int *mode) {
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unsigned int mask;
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unsigned int memlen;
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unsigned int vramlen;
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switch (var->bits_per_pixel) {
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case 16: mask = 0x1F;
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break;
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case 32: mask = 0x0F;
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break;
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default: return -EINVAL;
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}
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vramlen = m2info->video.len_usable;
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if (var->yres_virtual < var->yres)
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var->yres_virtual = var->yres;
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if (var->xres_virtual < var->xres)
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var->xres_virtual = var->xres;
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var->xres_virtual = (var->xres_virtual + mask) & ~mask;
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if (var->yres_virtual > 32767)
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return -EINVAL;
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memlen = var->xres_virtual * var->yres_virtual * (var->bits_per_pixel >> 3);
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if (memlen > vramlen)
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return -EINVAL;
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if (var->xoffset + var->xres > var->xres_virtual)
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var->xoffset = var->xres_virtual - var->xres;
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if (var->yoffset + var->yres > var->yres_virtual)
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var->yoffset = var->yres_virtual - var->yres;
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var->xres &= ~7;
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var->left_margin &= ~7;
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var->right_margin &= ~7;
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var->hsync_len &= ~7;
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*mode = var->bits_per_pixel;
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if (var->bits_per_pixel == 16) {
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if (var->green.length == 5) {
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var->red.offset = 10;
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var->red.length = 5;
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var->green.offset = 5;
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var->green.length = 5;
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var->blue.offset = 0;
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var->blue.length = 5;
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var->transp.offset = 15;
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var->transp.length = 1;
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*mode = 15;
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} else {
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var->red.offset = 11;
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var->red.length = 5;
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var->green.offset = 5;
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var->green.length = 6;
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var->blue.offset = 0;
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var->blue.length = 5;
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var->transp.offset = 0;
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var->transp.length = 0;
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}
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} else {
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var->red.offset = 16;
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var->red.length = 8;
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var->green.offset = 8;
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var->green.length = 8;
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var->blue.offset = 0;
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var->blue.length = 8;
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var->transp.offset = 24;
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var->transp.length = 8;
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}
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*visual = FB_VISUAL_TRUECOLOR;
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*video_cmap_len = 16;
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return 0;
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}
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static int matroxfb_dh_open(struct fb_info* info, int user) {
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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struct matrox_fb_info *minfo = m2info->primary_dev;
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if (minfo) {
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int err;
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if (minfo->dead) {
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return -ENXIO;
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}
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err = minfo->fbops.fb_open(&minfo->fbcon, user);
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if (err) {
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return err;
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}
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}
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return 0;
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#undef m2info
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}
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static int matroxfb_dh_release(struct fb_info* info, int user) {
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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int err = 0;
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struct matrox_fb_info *minfo = m2info->primary_dev;
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if (minfo) {
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err = minfo->fbops.fb_release(&minfo->fbcon, user);
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}
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return err;
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#undef m2info
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}
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/*
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* This function is called before the register_framebuffer so
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* no locking is needed.
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*/
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static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info)
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{
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struct fb_fix_screeninfo *fix = &m2info->fbcon.fix;
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strcpy(fix->id, "MATROX DH");
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fix->smem_start = m2info->video.base;
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fix->smem_len = m2info->video.len_usable;
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fix->ypanstep = 1;
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fix->ywrapstep = 0;
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fix->xpanstep = 8; /* TBD */
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fix->mmio_start = m2info->mmio.base;
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fix->mmio_len = m2info->mmio.len;
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fix->accel = 0; /* no accel... */
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}
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static int matroxfb_dh_check_var(struct fb_var_screeninfo* var, struct fb_info* info) {
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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int visual;
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int cmap_len;
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int mode;
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return matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode);
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#undef m2info
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}
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static int matroxfb_dh_set_par(struct fb_info* info) {
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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int visual;
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int cmap_len;
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int mode;
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int err;
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struct fb_var_screeninfo* var = &info->var;
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struct matrox_fb_info *minfo = m2info->primary_dev;
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if ((err = matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode)) != 0)
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return err;
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/* cmap */
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{
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m2info->fbcon.screen_base = vaddr_va(m2info->video.vbase);
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m2info->fbcon.fix.visual = visual;
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m2info->fbcon.fix.type = FB_TYPE_PACKED_PIXELS;
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m2info->fbcon.fix.type_aux = 0;
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m2info->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3;
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}
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{
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struct my_timming mt;
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unsigned int pos;
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int out;
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int cnt;
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matroxfb_var2my(&m2info->fbcon.var, &mt);
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mt.crtc = MATROXFB_SRC_CRTC2;
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/* CRTC2 delay */
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mt.delay = 34;
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pos = (m2info->fbcon.var.yoffset * m2info->fbcon.var.xres_virtual + m2info->fbcon.var.xoffset) * m2info->fbcon.var.bits_per_pixel >> 3;
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pos += m2info->video.offbase;
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cnt = 0;
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down_read(&minfo->altout.lock);
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for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
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if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {
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cnt++;
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if (minfo->outputs[out].output->compute) {
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minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt);
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}
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}
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}
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minfo->crtc2.pixclock = mt.pixclock;
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minfo->crtc2.mnp = mt.mnp;
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up_read(&minfo->altout.lock);
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if (cnt) {
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matroxfb_dh_restore(m2info, &mt, mode, pos);
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} else {
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matroxfb_dh_disable(m2info);
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}
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DAC1064_global_init(minfo);
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DAC1064_global_restore(minfo);
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down_read(&minfo->altout.lock);
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for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
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if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 &&
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minfo->outputs[out].output->program) {
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minfo->outputs[out].output->program(minfo->outputs[out].data);
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}
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}
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for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
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if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 &&
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minfo->outputs[out].output->start) {
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minfo->outputs[out].output->start(minfo->outputs[out].data);
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}
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}
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up_read(&minfo->altout.lock);
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}
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m2info->initialized = 1;
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return 0;
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#undef m2info
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}
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static int matroxfb_dh_pan_display(struct fb_var_screeninfo* var, struct fb_info* info) {
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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matroxfb_dh_pan_var(m2info, var);
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return 0;
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#undef m2info
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}
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static int matroxfb_dh_get_vblank(const struct matroxfb_dh_fb_info* m2info, struct fb_vblank* vblank) {
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struct matrox_fb_info *minfo = m2info->primary_dev;
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matroxfb_enable_irq(minfo, 0);
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memset(vblank, 0, sizeof(*vblank));
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vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VBLANK;
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/* mask out reserved bits + field number (odd/even) */
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vblank->vcount = mga_inl(0x3C48) & 0x000007FF;
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/* compatibility stuff */
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if (vblank->vcount >= m2info->fbcon.var.yres)
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vblank->flags |= FB_VBLANK_VBLANKING;
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if (test_bit(0, &minfo->irq_flags)) {
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vblank->flags |= FB_VBLANK_HAVE_COUNT;
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/* Only one writer, aligned int value...
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it should work without lock and without atomic_t */
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vblank->count = minfo->crtc2.vsync.cnt;
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}
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return 0;
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}
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static int matroxfb_dh_ioctl(struct fb_info *info,
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unsigned int cmd,
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unsigned long arg)
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{
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#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
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struct matrox_fb_info *minfo = m2info->primary_dev;
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DBG(__func__)
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switch (cmd) {
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case FBIOGET_VBLANK:
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{
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struct fb_vblank vblank;
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int err;
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err = matroxfb_dh_get_vblank(m2info, &vblank);
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if (err)
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return err;
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if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
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return -EFAULT;
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return 0;
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}
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case FBIO_WAITFORVSYNC:
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{
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u_int32_t crt;
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if (get_user(crt, (u_int32_t __user *)arg))
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return -EFAULT;
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if (crt != 0)
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return -ENODEV;
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return matroxfb_wait_for_sync(minfo, 1);
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}
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case MATROXFB_SET_OUTPUT_MODE:
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case MATROXFB_GET_OUTPUT_MODE:
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case MATROXFB_GET_ALL_OUTPUTS:
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{
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return minfo->fbcon.fbops->fb_ioctl(&minfo->fbcon, cmd, arg);
|
|
}
|
|
case MATROXFB_SET_OUTPUT_CONNECTION:
|
|
{
|
|
u_int32_t tmp;
|
|
int out;
|
|
int changes;
|
|
|
|
if (get_user(tmp, (u_int32_t __user *)arg))
|
|
return -EFAULT;
|
|
for (out = 0; out < 32; out++) {
|
|
if (tmp & (1 << out)) {
|
|
if (out >= MATROXFB_MAX_OUTPUTS)
|
|
return -ENXIO;
|
|
if (!minfo->outputs[out].output)
|
|
return -ENXIO;
|
|
switch (minfo->outputs[out].src) {
|
|
case MATROXFB_SRC_NONE:
|
|
case MATROXFB_SRC_CRTC2:
|
|
break;
|
|
default:
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
}
|
|
if (minfo->devflags.panellink) {
|
|
if (tmp & MATROXFB_OUTPUT_CONN_DFP)
|
|
return -EINVAL;
|
|
if ((minfo->outputs[2].src == MATROXFB_SRC_CRTC1) && tmp)
|
|
return -EBUSY;
|
|
}
|
|
changes = 0;
|
|
for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
|
|
if (tmp & (1 << out)) {
|
|
if (minfo->outputs[out].src != MATROXFB_SRC_CRTC2) {
|
|
changes = 1;
|
|
minfo->outputs[out].src = MATROXFB_SRC_CRTC2;
|
|
}
|
|
} else if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {
|
|
changes = 1;
|
|
minfo->outputs[out].src = MATROXFB_SRC_NONE;
|
|
}
|
|
}
|
|
if (!changes)
|
|
return 0;
|
|
matroxfb_dh_set_par(info);
|
|
return 0;
|
|
}
|
|
case MATROXFB_GET_OUTPUT_CONNECTION:
|
|
{
|
|
u_int32_t conn = 0;
|
|
int out;
|
|
|
|
for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
|
|
if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {
|
|
conn |= 1 << out;
|
|
}
|
|
}
|
|
if (put_user(conn, (u_int32_t __user *)arg))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case MATROXFB_GET_AVAILABLE_OUTPUTS:
|
|
{
|
|
u_int32_t tmp = 0;
|
|
int out;
|
|
|
|
for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
|
|
if (minfo->outputs[out].output) {
|
|
switch (minfo->outputs[out].src) {
|
|
case MATROXFB_SRC_NONE:
|
|
case MATROXFB_SRC_CRTC2:
|
|
tmp |= 1 << out;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (minfo->devflags.panellink) {
|
|
tmp &= ~MATROXFB_OUTPUT_CONN_DFP;
|
|
if (minfo->outputs[2].src == MATROXFB_SRC_CRTC1) {
|
|
tmp = 0;
|
|
}
|
|
}
|
|
if (put_user(tmp, (u_int32_t __user *)arg))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
}
|
|
return -ENOTTY;
|
|
#undef m2info
|
|
}
|
|
|
|
static int matroxfb_dh_blank(int blank, struct fb_info* info) {
|
|
#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
|
|
switch (blank) {
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
default:;
|
|
}
|
|
/* do something... */
|
|
return 0;
|
|
#undef m2info
|
|
}
|
|
|
|
static struct fb_ops matroxfb_dh_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_open = matroxfb_dh_open,
|
|
.fb_release = matroxfb_dh_release,
|
|
.fb_check_var = matroxfb_dh_check_var,
|
|
.fb_set_par = matroxfb_dh_set_par,
|
|
.fb_setcolreg = matroxfb_dh_setcolreg,
|
|
.fb_pan_display =matroxfb_dh_pan_display,
|
|
.fb_blank = matroxfb_dh_blank,
|
|
.fb_ioctl = matroxfb_dh_ioctl,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
};
|
|
|
|
static struct fb_var_screeninfo matroxfb_dh_defined = {
|
|
640,480,640,480,/* W,H, virtual W,H */
|
|
0,0, /* offset */
|
|
32, /* depth */
|
|
0, /* gray */
|
|
{0,0,0}, /* R */
|
|
{0,0,0}, /* G */
|
|
{0,0,0}, /* B */
|
|
{0,0,0}, /* alpha */
|
|
0, /* nonstd */
|
|
FB_ACTIVATE_NOW,
|
|
-1,-1, /* display size */
|
|
0, /* accel flags */
|
|
39721L,48L,16L,33L,10L,
|
|
96L,2,0, /* no sync info */
|
|
FB_VMODE_NONINTERLACED,
|
|
0, {0,0,0,0,0}
|
|
};
|
|
|
|
static int matroxfb_dh_regit(const struct matrox_fb_info *minfo,
|
|
struct matroxfb_dh_fb_info *m2info)
|
|
{
|
|
#define minfo (m2info->primary_dev)
|
|
void* oldcrtc2;
|
|
|
|
m2info->fbcon.fbops = &matroxfb_dh_ops;
|
|
m2info->fbcon.flags = FBINFO_FLAG_DEFAULT;
|
|
m2info->fbcon.flags |= FBINFO_HWACCEL_XPAN |
|
|
FBINFO_HWACCEL_YPAN;
|
|
m2info->fbcon.pseudo_palette = m2info->cmap;
|
|
fb_alloc_cmap(&m2info->fbcon.cmap, 256, 1);
|
|
|
|
if (mem < 64)
|
|
mem *= 1024;
|
|
if (mem < 64*1024)
|
|
mem *= 1024;
|
|
mem &= ~0x00000FFF; /* PAGE_MASK? */
|
|
if (minfo->video.len_usable + mem <= minfo->video.len)
|
|
m2info->video.offbase = minfo->video.len - mem;
|
|
else if (minfo->video.len < mem) {
|
|
return -ENOMEM;
|
|
} else { /* check yres on first head... */
|
|
m2info->video.borrowed = mem;
|
|
minfo->video.len_usable -= mem;
|
|
m2info->video.offbase = minfo->video.len_usable;
|
|
}
|
|
m2info->video.base = minfo->video.base + m2info->video.offbase;
|
|
m2info->video.len = m2info->video.len_usable = m2info->video.len_maximum = mem;
|
|
m2info->video.vbase.vaddr = vaddr_va(minfo->video.vbase) + m2info->video.offbase;
|
|
m2info->mmio.base = minfo->mmio.base;
|
|
m2info->mmio.vbase = minfo->mmio.vbase;
|
|
m2info->mmio.len = minfo->mmio.len;
|
|
|
|
matroxfb_dh_init_fix(m2info);
|
|
if (register_framebuffer(&m2info->fbcon)) {
|
|
return -ENXIO;
|
|
}
|
|
if (!m2info->initialized)
|
|
fb_set_var(&m2info->fbcon, &matroxfb_dh_defined);
|
|
down_write(&minfo->crtc2.lock);
|
|
oldcrtc2 = minfo->crtc2.info;
|
|
minfo->crtc2.info = m2info;
|
|
up_write(&minfo->crtc2.lock);
|
|
if (oldcrtc2) {
|
|
printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 already present: %p\n",
|
|
oldcrtc2);
|
|
}
|
|
return 0;
|
|
#undef minfo
|
|
}
|
|
|
|
/* ************************** */
|
|
|
|
static int matroxfb_dh_registerfb(struct matroxfb_dh_fb_info* m2info) {
|
|
#define minfo (m2info->primary_dev)
|
|
if (matroxfb_dh_regit(minfo, m2info)) {
|
|
printk(KERN_ERR "matroxfb_crtc2: secondary head failed to register\n");
|
|
return -1;
|
|
}
|
|
printk(KERN_INFO "matroxfb_crtc2: secondary head of fb%u was registered as fb%u\n",
|
|
minfo->fbcon.node, m2info->fbcon.node);
|
|
m2info->fbcon_registered = 1;
|
|
return 0;
|
|
#undef minfo
|
|
}
|
|
|
|
static void matroxfb_dh_deregisterfb(struct matroxfb_dh_fb_info* m2info) {
|
|
#define minfo (m2info->primary_dev)
|
|
if (m2info->fbcon_registered) {
|
|
int id;
|
|
struct matroxfb_dh_fb_info* crtc2;
|
|
|
|
down_write(&minfo->crtc2.lock);
|
|
crtc2 = minfo->crtc2.info;
|
|
if (crtc2 == m2info)
|
|
minfo->crtc2.info = NULL;
|
|
up_write(&minfo->crtc2.lock);
|
|
if (crtc2 != m2info) {
|
|
printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 mismatch at unload: %p != %p\n",
|
|
crtc2, m2info);
|
|
printk(KERN_ERR "matroxfb_crtc2: Expect kernel crash after module unload.\n");
|
|
return;
|
|
}
|
|
id = m2info->fbcon.node;
|
|
unregister_framebuffer(&m2info->fbcon);
|
|
/* return memory back to primary head */
|
|
minfo->video.len_usable += m2info->video.borrowed;
|
|
printk(KERN_INFO "matroxfb_crtc2: fb%u unregistered\n", id);
|
|
m2info->fbcon_registered = 0;
|
|
}
|
|
#undef minfo
|
|
}
|
|
|
|
static void* matroxfb_crtc2_probe(struct matrox_fb_info* minfo) {
|
|
struct matroxfb_dh_fb_info* m2info;
|
|
|
|
/* hardware is CRTC2 incapable... */
|
|
if (!minfo->devflags.crtc2)
|
|
return NULL;
|
|
m2info = kzalloc(sizeof(*m2info), GFP_KERNEL);
|
|
if (!m2info) {
|
|
printk(KERN_ERR "matroxfb_crtc2: Not enough memory for CRTC2 control structs\n");
|
|
return NULL;
|
|
}
|
|
m2info->primary_dev = minfo;
|
|
if (matroxfb_dh_registerfb(m2info)) {
|
|
kfree(m2info);
|
|
printk(KERN_ERR "matroxfb_crtc2: CRTC2 framebuffer failed to register\n");
|
|
return NULL;
|
|
}
|
|
return m2info;
|
|
}
|
|
|
|
static void matroxfb_crtc2_remove(struct matrox_fb_info* minfo, void* crtc2) {
|
|
matroxfb_dh_deregisterfb(crtc2);
|
|
kfree(crtc2);
|
|
}
|
|
|
|
static struct matroxfb_driver crtc2 = {
|
|
.name = "Matrox G400 CRTC2",
|
|
.probe = matroxfb_crtc2_probe,
|
|
.remove = matroxfb_crtc2_remove };
|
|
|
|
static int matroxfb_crtc2_init(void) {
|
|
if (fb_get_options("matrox_crtc2fb", NULL))
|
|
return -ENODEV;
|
|
|
|
matroxfb_register_driver(&crtc2);
|
|
return 0;
|
|
}
|
|
|
|
static void matroxfb_crtc2_exit(void) {
|
|
matroxfb_unregister_driver(&crtc2);
|
|
}
|
|
|
|
MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
|
|
MODULE_DESCRIPTION("Matrox G400 CRTC2 driver");
|
|
MODULE_LICENSE("GPL");
|
|
module_init(matroxfb_crtc2_init);
|
|
module_exit(matroxfb_crtc2_exit);
|
|
/* we do not have __setup() yet */
|