Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / video / fbdev / matrox / matroxfb_DAC1064.c
diff --git a/kernel/drivers/video/fbdev/matrox/matroxfb_DAC1064.c b/kernel/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
new file mode 100644 (file)
index 0000000..a01147f
--- /dev/null
@@ -0,0 +1,1107 @@
+/*
+ *
+ * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.
+ *
+ * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
+ *
+ * Portions Copyright (c) 2001 Matrox Graphics Inc.
+ *
+ * Version: 1.65 2002/08/14
+ *
+ * See matroxfb_base.c for contributors.
+ *
+ */
+
+
+#include "matroxfb_DAC1064.h"
+#include "matroxfb_misc.h"
+#include "matroxfb_accel.h"
+#include "g450_pll.h"
+#include <linux/matroxfb.h>
+
+#ifdef NEED_DAC1064
+#define outDAC1064 matroxfb_DAC_out
+#define inDAC1064 matroxfb_DAC_in
+
+#define DAC1064_OPT_SCLK_PCI   0x00
+#define DAC1064_OPT_SCLK_PLL   0x01
+#define DAC1064_OPT_SCLK_EXT   0x02
+#define DAC1064_OPT_SCLK_MASK  0x03
+#define DAC1064_OPT_GDIV1      0x04    /* maybe it is GDIV2 on G100 ?! */
+#define DAC1064_OPT_GDIV3      0x00
+#define DAC1064_OPT_MDIV1      0x08
+#define DAC1064_OPT_MDIV2      0x00
+#define DAC1064_OPT_RESERVED   0x10
+
+static void DAC1064_calcclock(const struct matrox_fb_info *minfo,
+                             unsigned int freq, unsigned int fmax,
+                             unsigned int *in, unsigned int *feed,
+                             unsigned int *post)
+{
+       unsigned int fvco;
+       unsigned int p;
+
+       DBG(__func__)
+       
+       /* only for devices older than G450 */
+
+       fvco = PLL_calcclock(minfo, freq, fmax, in, feed, &p);
+       
+       p = (1 << p) - 1;
+       if (fvco <= 100000)
+               ;
+       else if (fvco <= 140000)
+               p |= 0x08;
+       else if (fvco <= 180000)
+               p |= 0x10;
+       else
+               p |= 0x18;
+       *post = p;
+}
+
+/* they must be in POS order */
+static const unsigned char MGA1064_DAC_regs[] = {
+               M1064_XCURADDL, M1064_XCURADDH, M1064_XCURCTRL,
+               M1064_XCURCOL0RED, M1064_XCURCOL0GREEN, M1064_XCURCOL0BLUE,
+               M1064_XCURCOL1RED, M1064_XCURCOL1GREEN, M1064_XCURCOL1BLUE,
+               M1064_XCURCOL2RED, M1064_XCURCOL2GREEN, M1064_XCURCOL2BLUE,
+               DAC1064_XVREFCTRL, M1064_XMULCTRL, M1064_XPIXCLKCTRL, M1064_XGENCTRL,
+               M1064_XMISCCTRL,
+               M1064_XGENIOCTRL, M1064_XGENIODATA, M1064_XZOOMCTRL, M1064_XSENSETEST,
+               M1064_XCRCBITSEL,
+               M1064_XCOLKEYMASKL, M1064_XCOLKEYMASKH, M1064_XCOLKEYL, M1064_XCOLKEYH };
+
+static const unsigned char MGA1064_DAC[] = {
+               0x00, 0x00, M1064_XCURCTRL_DIS,
+               0x00, 0x00, 0x00,       /* black */
+               0xFF, 0xFF, 0xFF,       /* white */
+               0xFF, 0x00, 0x00,       /* red */
+               0x00, 0,
+               M1064_XPIXCLKCTRL_PLL_UP | M1064_XPIXCLKCTRL_EN | M1064_XPIXCLKCTRL_SRC_PLL,
+               M1064_XGENCTRL_VS_0 | M1064_XGENCTRL_ALPHA_DIS | M1064_XGENCTRL_BLACK_0IRE | M1064_XGENCTRL_NO_SYNC_ON_GREEN,
+               M1064_XMISCCTRL_DAC_8BIT,
+               0x00, 0x00, M1064_XZOOMCTRL_1, M1064_XSENSETEST_BCOMP | M1064_XSENSETEST_GCOMP | M1064_XSENSETEST_RCOMP | M1064_XSENSETEST_PDOWN,
+               0x00,
+               0x00, 0x00, 0xFF, 0xFF};
+
+static void DAC1064_setpclk(struct matrox_fb_info *minfo, unsigned long fout)
+{
+       unsigned int m, n, p;
+
+       DBG(__func__)
+
+       DAC1064_calcclock(minfo, fout, minfo->max_pixel_clock, &m, &n, &p);
+       minfo->hw.DACclk[0] = m;
+       minfo->hw.DACclk[1] = n;
+       minfo->hw.DACclk[2] = p;
+}
+
+static void DAC1064_setmclk(struct matrox_fb_info *minfo, int oscinfo,
+                           unsigned long fmem)
+{
+       u_int32_t mx;
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       if (minfo->devflags.noinit) {
+               /* read MCLK and give up... */
+               hw->DACclk[3] = inDAC1064(minfo, DAC1064_XSYSPLLM);
+               hw->DACclk[4] = inDAC1064(minfo, DAC1064_XSYSPLLN);
+               hw->DACclk[5] = inDAC1064(minfo, DAC1064_XSYSPLLP);
+               return;
+       }
+       mx = hw->MXoptionReg | 0x00000004;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mx);
+       mx &= ~0x000000BB;
+       if (oscinfo & DAC1064_OPT_GDIV1)
+               mx |= 0x00000008;
+       if (oscinfo & DAC1064_OPT_MDIV1)
+               mx |= 0x00000010;
+       if (oscinfo & DAC1064_OPT_RESERVED)
+               mx |= 0x00000080;
+       if ((oscinfo & DAC1064_OPT_SCLK_MASK) == DAC1064_OPT_SCLK_PLL) {
+               /* select PCI clock until we have setup oscilator... */
+               int clk;
+               unsigned int m, n, p;
+
+               /* powerup system PLL, select PCI clock */
+               mx |= 0x00000020;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mx);
+               mx &= ~0x00000004;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mx);
+
+               /* !!! you must not access device if MCLK is not running !!!
+                  Doing so cause immediate PCI lockup :-( Maybe they should
+                  generate ABORT or I/O (parity...) error and Linux should
+                  recover from this... (kill driver/process). But world is not
+                  perfect... */
+               /* (bit 2 of PCI_OPTION_REG must be 0... and bits 0,1 must not
+                  select PLL... because of PLL can be stopped at this time) */
+               DAC1064_calcclock(minfo, fmem, minfo->max_pixel_clock, &m, &n, &p);
+               outDAC1064(minfo, DAC1064_XSYSPLLM, hw->DACclk[3] = m);
+               outDAC1064(minfo, DAC1064_XSYSPLLN, hw->DACclk[4] = n);
+               outDAC1064(minfo, DAC1064_XSYSPLLP, hw->DACclk[5] = p);
+               for (clk = 65536; clk; --clk) {
+                       if (inDAC1064(minfo, DAC1064_XSYSPLLSTAT) & 0x40)
+                               break;
+               }
+               if (!clk)
+                       printk(KERN_ERR "matroxfb: aiee, SYSPLL not locked\n");
+               /* select PLL */
+               mx |= 0x00000005;
+       } else {
+               /* select specified system clock source */
+               mx |= oscinfo & DAC1064_OPT_SCLK_MASK;
+       }
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mx);
+       mx &= ~0x00000004;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mx);
+       hw->MXoptionReg = mx;
+}
+
+#ifdef CONFIG_FB_MATROX_G
+static void g450_set_plls(struct matrox_fb_info *minfo)
+{
+       u_int32_t c2_ctl;
+       unsigned int pxc;
+       struct matrox_hw_state *hw = &minfo->hw;
+       int pixelmnp;
+       int videomnp;
+       
+       c2_ctl = hw->crtc2.ctl & ~0x4007;       /* Clear PLL + enable for CRTC2 */
+       c2_ctl |= 0x0001;                       /* Enable CRTC2 */
+       hw->DACreg[POS1064_XPWRCTRL] &= ~0x02;  /* Stop VIDEO PLL */
+       pixelmnp = minfo->crtc1.mnp;
+       videomnp = minfo->crtc2.mnp;
+       if (videomnp < 0) {
+               c2_ctl &= ~0x0001;                      /* Disable CRTC2 */
+               hw->DACreg[POS1064_XPWRCTRL] &= ~0x10;  /* Powerdown CRTC2 */
+       } else if (minfo->crtc2.pixclock == minfo->features.pll.ref_freq) {
+               c2_ctl |=  0x4002;      /* Use reference directly */
+       } else if (videomnp == pixelmnp) {
+               c2_ctl |=  0x0004;      /* Use pixel PLL */
+       } else {
+               if (0 == ((videomnp ^ pixelmnp) & 0xFFFFFF00)) {
+                       /* PIXEL and VIDEO PLL must not use same frequency. We modify N
+                          of PIXEL PLL in such case because of VIDEO PLL may be source
+                          of TVO clocks, and chroma subcarrier is derived from its
+                          pixel clocks */
+                       pixelmnp += 0x000100;
+               }
+               c2_ctl |=  0x0006;      /* Use video PLL */
+               hw->DACreg[POS1064_XPWRCTRL] |= 0x02;
+               
+               outDAC1064(minfo, M1064_XPWRCTRL, hw->DACreg[POS1064_XPWRCTRL]);
+               matroxfb_g450_setpll_cond(minfo, videomnp, M_VIDEO_PLL);
+       }
+
+       hw->DACreg[POS1064_XPIXCLKCTRL] &= ~M1064_XPIXCLKCTRL_PLL_UP;
+       if (pixelmnp >= 0) {
+               hw->DACreg[POS1064_XPIXCLKCTRL] |= M1064_XPIXCLKCTRL_PLL_UP;
+               
+               outDAC1064(minfo, M1064_XPIXCLKCTRL, hw->DACreg[POS1064_XPIXCLKCTRL]);
+               matroxfb_g450_setpll_cond(minfo, pixelmnp, M_PIXEL_PLL_C);
+       }
+       if (c2_ctl != hw->crtc2.ctl) {
+               hw->crtc2.ctl = c2_ctl;
+               mga_outl(0x3C10, c2_ctl);
+       }
+
+       pxc = minfo->crtc1.pixclock;
+       if (pxc == 0 || minfo->outputs[2].src == MATROXFB_SRC_CRTC2) {
+               pxc = minfo->crtc2.pixclock;
+       }
+       if (minfo->chip == MGA_G550) {
+               if (pxc < 45000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x00;    /* 0-50 */
+               } else if (pxc < 55000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x08;    /* 34-62 */
+               } else if (pxc < 70000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x10;    /* 42-78 */
+               } else if (pxc < 85000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x18;    /* 62-92 */
+               } else if (pxc < 100000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x20;    /* 74-108 */
+               } else if (pxc < 115000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x28;    /* 94-122 */
+               } else if (pxc < 125000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x30;    /* 108-132 */
+               } else {
+                       hw->DACreg[POS1064_XPANMODE] = 0x38;    /* 120-168 */
+               }
+       } else {
+               /* G450 */
+               if (pxc < 45000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x00;    /* 0-54 */
+               } else if (pxc < 65000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x08;    /* 38-70 */
+               } else if (pxc < 85000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x10;    /* 56-96 */
+               } else if (pxc < 105000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x18;    /* 80-114 */
+               } else if (pxc < 135000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x20;    /* 102-144 */
+               } else if (pxc < 160000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x28;    /* 132-166 */
+               } else if (pxc < 175000) {
+                       hw->DACreg[POS1064_XPANMODE] = 0x30;    /* 154-182 */
+               } else {
+                       hw->DACreg[POS1064_XPANMODE] = 0x38;    /* 170-204 */
+               }
+       }
+}
+#endif
+
+void DAC1064_global_init(struct matrox_fb_info *minfo)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       hw->DACreg[POS1064_XMISCCTRL] &= M1064_XMISCCTRL_DAC_WIDTHMASK;
+       hw->DACreg[POS1064_XMISCCTRL] |= M1064_XMISCCTRL_LUT_EN;
+       hw->DACreg[POS1064_XPIXCLKCTRL] = M1064_XPIXCLKCTRL_PLL_UP | M1064_XPIXCLKCTRL_EN | M1064_XPIXCLKCTRL_SRC_PLL;
+#ifdef CONFIG_FB_MATROX_G
+       if (minfo->devflags.g450dac) {
+               hw->DACreg[POS1064_XPWRCTRL] = 0x1F;    /* powerup everything */
+               hw->DACreg[POS1064_XOUTPUTCONN] = 0x00; /* disable outputs */
+               hw->DACreg[POS1064_XMISCCTRL] |= M1064_XMISCCTRL_DAC_EN;
+               switch (minfo->outputs[0].src) {
+                       case MATROXFB_SRC_CRTC1:
+                       case MATROXFB_SRC_CRTC2:
+                               hw->DACreg[POS1064_XOUTPUTCONN] |= 0x01;        /* enable output; CRTC1/2 selection is in CRTC2 ctl */
+                               break;
+                       case MATROXFB_SRC_NONE:
+                               hw->DACreg[POS1064_XMISCCTRL] &= ~M1064_XMISCCTRL_DAC_EN;
+                               break;
+               }
+               switch (minfo->outputs[1].src) {
+                       case MATROXFB_SRC_CRTC1:
+                               hw->DACreg[POS1064_XOUTPUTCONN] |= 0x04;
+                               break;
+                       case MATROXFB_SRC_CRTC2:
+                               if (minfo->outputs[1].mode == MATROXFB_OUTPUT_MODE_MONITOR) {
+                                       hw->DACreg[POS1064_XOUTPUTCONN] |= 0x08;
+                               } else {
+                                       hw->DACreg[POS1064_XOUTPUTCONN] |= 0x0C;
+                               }
+                               break;
+                       case MATROXFB_SRC_NONE:
+                               hw->DACreg[POS1064_XPWRCTRL] &= ~0x01;          /* Poweroff DAC2 */
+                               break;
+               }
+               switch (minfo->outputs[2].src) {
+                       case MATROXFB_SRC_CRTC1:
+                               hw->DACreg[POS1064_XOUTPUTCONN] |= 0x20;
+                               break;
+                       case MATROXFB_SRC_CRTC2:
+                               hw->DACreg[POS1064_XOUTPUTCONN] |= 0x40;
+                               break;
+                       case MATROXFB_SRC_NONE:
+#if 0
+                               /* HELP! If we boot without DFP connected to DVI, we can
+                                  poweroff TMDS. But if we boot with DFP connected,
+                                  TMDS generated clocks are used instead of ALL pixclocks
+                                  available... If someone knows which register
+                                  handles it, please reveal this secret to me... */                    
+                               hw->DACreg[POS1064_XPWRCTRL] &= ~0x04;          /* Poweroff TMDS */
+#endif                         
+                               break;
+               }
+               /* Now set timming related variables... */
+               g450_set_plls(minfo);
+       } else
+#endif
+       {
+               if (minfo->outputs[1].src == MATROXFB_SRC_CRTC1) {
+                       hw->DACreg[POS1064_XPIXCLKCTRL] = M1064_XPIXCLKCTRL_PLL_UP | M1064_XPIXCLKCTRL_EN | M1064_XPIXCLKCTRL_SRC_EXT;
+                       hw->DACreg[POS1064_XMISCCTRL] |= GX00_XMISCCTRL_MFC_MAFC | G400_XMISCCTRL_VDO_MAFC12;
+               } else if (minfo->outputs[1].src == MATROXFB_SRC_CRTC2) {
+                       hw->DACreg[POS1064_XMISCCTRL] |= GX00_XMISCCTRL_MFC_MAFC | G400_XMISCCTRL_VDO_C2_MAFC12;
+               } else if (minfo->outputs[2].src == MATROXFB_SRC_CRTC1)
+                       hw->DACreg[POS1064_XMISCCTRL] |= GX00_XMISCCTRL_MFC_PANELLINK | G400_XMISCCTRL_VDO_MAFC12;
+               else
+                       hw->DACreg[POS1064_XMISCCTRL] |= GX00_XMISCCTRL_MFC_DIS;
+
+               if (minfo->outputs[0].src != MATROXFB_SRC_NONE)
+                       hw->DACreg[POS1064_XMISCCTRL] |= M1064_XMISCCTRL_DAC_EN;
+       }
+}
+
+void DAC1064_global_restore(struct matrox_fb_info *minfo)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       outDAC1064(minfo, M1064_XPIXCLKCTRL, hw->DACreg[POS1064_XPIXCLKCTRL]);
+       outDAC1064(minfo, M1064_XMISCCTRL, hw->DACreg[POS1064_XMISCCTRL]);
+       if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400) {
+               outDAC1064(minfo, 0x20, 0x04);
+               outDAC1064(minfo, 0x1F, minfo->devflags.dfp_type);
+               if (minfo->devflags.g450dac) {
+                       outDAC1064(minfo, M1064_XSYNCCTRL, 0xCC);
+                       outDAC1064(minfo, M1064_XPWRCTRL, hw->DACreg[POS1064_XPWRCTRL]);
+                       outDAC1064(minfo, M1064_XPANMODE, hw->DACreg[POS1064_XPANMODE]);
+                       outDAC1064(minfo, M1064_XOUTPUTCONN, hw->DACreg[POS1064_XOUTPUTCONN]);
+               }
+       }
+}
+
+static int DAC1064_init_1(struct matrox_fb_info *minfo, struct my_timming *m)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       memcpy(hw->DACreg, MGA1064_DAC, sizeof(MGA1064_DAC_regs));
+       switch (minfo->fbcon.var.bits_per_pixel) {
+               /* case 4: not supported by MGA1064 DAC */
+               case 8:
+                       hw->DACreg[POS1064_XMULCTRL] = M1064_XMULCTRL_DEPTH_8BPP | M1064_XMULCTRL_GRAPHICS_PALETIZED;
+                       break;
+               case 16:
+                       if (minfo->fbcon.var.green.length == 5)
+                               hw->DACreg[POS1064_XMULCTRL] = M1064_XMULCTRL_DEPTH_15BPP_1BPP | M1064_XMULCTRL_GRAPHICS_PALETIZED;
+                       else
+                               hw->DACreg[POS1064_XMULCTRL] = M1064_XMULCTRL_DEPTH_16BPP | M1064_XMULCTRL_GRAPHICS_PALETIZED;
+                       break;
+               case 24:
+                       hw->DACreg[POS1064_XMULCTRL] = M1064_XMULCTRL_DEPTH_24BPP | M1064_XMULCTRL_GRAPHICS_PALETIZED;
+                       break;
+               case 32:
+                       hw->DACreg[POS1064_XMULCTRL] = M1064_XMULCTRL_DEPTH_32BPP | M1064_XMULCTRL_GRAPHICS_PALETIZED;
+                       break;
+               default:
+                       return 1;       /* unsupported depth */
+       }
+       hw->DACreg[POS1064_XVREFCTRL] = minfo->features.DAC1064.xvrefctrl;
+       hw->DACreg[POS1064_XGENCTRL] &= ~M1064_XGENCTRL_SYNC_ON_GREEN_MASK;
+       hw->DACreg[POS1064_XGENCTRL] |= (m->sync & FB_SYNC_ON_GREEN)?M1064_XGENCTRL_SYNC_ON_GREEN:M1064_XGENCTRL_NO_SYNC_ON_GREEN;
+       hw->DACreg[POS1064_XCURADDL] = 0;
+       hw->DACreg[POS1064_XCURADDH] = 0;
+
+       DAC1064_global_init(minfo);
+       return 0;
+}
+
+static int DAC1064_init_2(struct matrox_fb_info *minfo, struct my_timming *m)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       if (minfo->fbcon.var.bits_per_pixel > 16) {     /* 256 entries */
+               int i;
+
+               for (i = 0; i < 256; i++) {
+                       hw->DACpal[i * 3 + 0] = i;
+                       hw->DACpal[i * 3 + 1] = i;
+                       hw->DACpal[i * 3 + 2] = i;
+               }
+       } else if (minfo->fbcon.var.bits_per_pixel > 8) {
+               if (minfo->fbcon.var.green.length == 5) {       /* 0..31, 128..159 */
+                       int i;
+
+                       for (i = 0; i < 32; i++) {
+                               /* with p15 == 0 */
+                               hw->DACpal[i * 3 + 0] = i << 3;
+                               hw->DACpal[i * 3 + 1] = i << 3;
+                               hw->DACpal[i * 3 + 2] = i << 3;
+                               /* with p15 == 1 */
+                               hw->DACpal[(i + 128) * 3 + 0] = i << 3;
+                               hw->DACpal[(i + 128) * 3 + 1] = i << 3;
+                               hw->DACpal[(i + 128) * 3 + 2] = i << 3;
+                       }
+               } else {
+                       int i;
+
+                       for (i = 0; i < 64; i++) {              /* 0..63 */
+                               hw->DACpal[i * 3 + 0] = i << 3;
+                               hw->DACpal[i * 3 + 1] = i << 2;
+                               hw->DACpal[i * 3 + 2] = i << 3;
+                       }
+               }
+       } else {
+               memset(hw->DACpal, 0, 768);
+       }
+       return 0;
+}
+
+static void DAC1064_restore_1(struct matrox_fb_info *minfo)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       CRITFLAGS
+
+       DBG(__func__)
+
+       CRITBEGIN
+
+       if ((inDAC1064(minfo, DAC1064_XSYSPLLM) != hw->DACclk[3]) ||
+           (inDAC1064(minfo, DAC1064_XSYSPLLN) != hw->DACclk[4]) ||
+           (inDAC1064(minfo, DAC1064_XSYSPLLP) != hw->DACclk[5])) {
+               outDAC1064(minfo, DAC1064_XSYSPLLM, hw->DACclk[3]);
+               outDAC1064(minfo, DAC1064_XSYSPLLN, hw->DACclk[4]);
+               outDAC1064(minfo, DAC1064_XSYSPLLP, hw->DACclk[5]);
+       }
+       {
+               unsigned int i;
+
+               for (i = 0; i < sizeof(MGA1064_DAC_regs); i++) {
+                       if ((i != POS1064_XPIXCLKCTRL) && (i != POS1064_XMISCCTRL))
+                               outDAC1064(minfo, MGA1064_DAC_regs[i], hw->DACreg[i]);
+               }
+       }
+
+       DAC1064_global_restore(minfo);
+
+       CRITEND
+};
+
+static void DAC1064_restore_2(struct matrox_fb_info *minfo)
+{
+#ifdef DEBUG
+       unsigned int i;
+#endif
+
+       DBG(__func__)
+
+#ifdef DEBUG
+       dprintk(KERN_DEBUG "DAC1064regs ");
+       for (i = 0; i < sizeof(MGA1064_DAC_regs); i++) {
+               dprintk("R%02X=%02X ", MGA1064_DAC_regs[i], minfo->hw.DACreg[i]);
+               if ((i & 0x7) == 0x7) dprintk(KERN_DEBUG "continuing... ");
+       }
+       dprintk(KERN_DEBUG "DAC1064clk ");
+       for (i = 0; i < 6; i++)
+               dprintk("C%02X=%02X ", i, minfo->hw.DACclk[i]);
+       dprintk("\n");
+#endif
+}
+
+static int m1064_compute(void* out, struct my_timming* m) {
+#define minfo ((struct matrox_fb_info*)out)
+       {
+               int i;
+               int tmout;
+               CRITFLAGS
+
+               DAC1064_setpclk(minfo, m->pixclock);
+
+               CRITBEGIN
+
+               for (i = 0; i < 3; i++)
+                       outDAC1064(minfo, M1064_XPIXPLLCM + i, minfo->hw.DACclk[i]);
+               for (tmout = 500000; tmout; tmout--) {
+                       if (inDAC1064(minfo, M1064_XPIXPLLSTAT) & 0x40)
+                               break;
+                       udelay(10);
+               }
+
+               CRITEND
+
+               if (!tmout)
+                       printk(KERN_ERR "matroxfb: Pixel PLL not locked after 5 secs\n");
+       }
+#undef minfo
+       return 0;
+}
+
+static struct matrox_altout m1064 = {
+       .name    = "Primary output",
+       .compute = m1064_compute,
+};
+
+#ifdef CONFIG_FB_MATROX_G
+static int g450_compute(void* out, struct my_timming* m) {
+#define minfo ((struct matrox_fb_info*)out)
+       if (m->mnp < 0) {
+               m->mnp = matroxfb_g450_setclk(minfo, m->pixclock, (m->crtc == MATROXFB_SRC_CRTC1) ? M_PIXEL_PLL_C : M_VIDEO_PLL);
+               if (m->mnp >= 0) {
+                       m->pixclock = g450_mnp2f(minfo, m->mnp);
+               }
+       }
+#undef minfo
+       return 0;
+}
+
+static struct matrox_altout g450out = {
+       .name    = "Primary output",
+       .compute = g450_compute,
+};
+#endif
+
+#endif /* NEED_DAC1064 */
+
+#ifdef CONFIG_FB_MATROX_MYSTIQUE
+static int MGA1064_init(struct matrox_fb_info *minfo, struct my_timming *m)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       if (DAC1064_init_1(minfo, m)) return 1;
+       if (matroxfb_vgaHWinit(minfo, m)) return 1;
+
+       hw->MiscOutReg = 0xCB;
+       if (m->sync & FB_SYNC_HOR_HIGH_ACT)
+               hw->MiscOutReg &= ~0x40;
+       if (m->sync & FB_SYNC_VERT_HIGH_ACT)
+               hw->MiscOutReg &= ~0x80;
+       if (m->sync & FB_SYNC_COMP_HIGH_ACT) /* should be only FB_SYNC_COMP */
+               hw->CRTCEXT[3] |= 0x40;
+
+       if (DAC1064_init_2(minfo, m)) return 1;
+       return 0;
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_G
+static int MGAG100_init(struct matrox_fb_info *minfo, struct my_timming *m)
+{
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       if (DAC1064_init_1(minfo, m)) return 1;
+       hw->MXoptionReg &= ~0x2000;
+       if (matroxfb_vgaHWinit(minfo, m)) return 1;
+
+       hw->MiscOutReg = 0xEF;
+       if (m->sync & FB_SYNC_HOR_HIGH_ACT)
+               hw->MiscOutReg &= ~0x40;
+       if (m->sync & FB_SYNC_VERT_HIGH_ACT)
+               hw->MiscOutReg &= ~0x80;
+       if (m->sync & FB_SYNC_COMP_HIGH_ACT) /* should be only FB_SYNC_COMP */
+               hw->CRTCEXT[3] |= 0x40;
+
+       if (DAC1064_init_2(minfo, m)) return 1;
+       return 0;
+}
+#endif /* G */
+
+#ifdef CONFIG_FB_MATROX_MYSTIQUE
+static void MGA1064_ramdac_init(struct matrox_fb_info *minfo)
+{
+
+       DBG(__func__)
+
+       /* minfo->features.DAC1064.vco_freq_min = 120000; */
+       minfo->features.pll.vco_freq_min = 62000;
+       minfo->features.pll.ref_freq     = 14318;
+       minfo->features.pll.feed_div_min = 100;
+       minfo->features.pll.feed_div_max = 127;
+       minfo->features.pll.in_div_min   = 1;
+       minfo->features.pll.in_div_max   = 31;
+       minfo->features.pll.post_shift_max = 3;
+       minfo->features.DAC1064.xvrefctrl = DAC1064_XVREFCTRL_EXTERNAL;
+       /* maybe cmdline MCLK= ?, doc says gclk=44MHz, mclk=66MHz... it was 55/83 with old values */
+       DAC1064_setmclk(minfo, DAC1064_OPT_MDIV2 | DAC1064_OPT_GDIV3 | DAC1064_OPT_SCLK_PLL, 133333);
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_G
+/* BIOS environ */
+static int x7AF4 = 0x10;       /* flags, maybe 0x10 = SDRAM, 0x00 = SGRAM??? */
+                               /* G100 wants 0x10, G200 SGRAM does not care... */
+#if 0
+static int def50 = 0;  /* reg50, & 0x0F, & 0x3000 (only 0x0000, 0x1000, 0x2000 (0x3000 disallowed and treated as 0) */
+#endif
+
+static void MGAG100_progPixClock(const struct matrox_fb_info *minfo, int flags,
+                                int m, int n, int p)
+{
+       int reg;
+       int selClk;
+       int clk;
+
+       DBG(__func__)
+
+       outDAC1064(minfo, M1064_XPIXCLKCTRL, inDAC1064(minfo, M1064_XPIXCLKCTRL) | M1064_XPIXCLKCTRL_DIS |
+                  M1064_XPIXCLKCTRL_PLL_UP);
+       switch (flags & 3) {
+               case 0:         reg = M1064_XPIXPLLAM; break;
+               case 1:         reg = M1064_XPIXPLLBM; break;
+               default:        reg = M1064_XPIXPLLCM; break;
+       }
+       outDAC1064(minfo, reg++, m);
+       outDAC1064(minfo, reg++, n);
+       outDAC1064(minfo, reg, p);
+       selClk = mga_inb(M_MISC_REG_READ) & ~0xC;
+       /* there should be flags & 0x03 & case 0/1/else */
+       /* and we should first select source and after that we should wait for PLL */
+       /* and we are waiting for PLL with oscilator disabled... Is it right? */
+       switch (flags & 0x03) {
+               case 0x00:      break;
+               case 0x01:      selClk |= 4; break;
+               default:        selClk |= 0x0C; break;
+       }
+       mga_outb(M_MISC_REG, selClk);
+       for (clk = 500000; clk; clk--) {
+               if (inDAC1064(minfo, M1064_XPIXPLLSTAT) & 0x40)
+                       break;
+               udelay(10);
+       }
+       if (!clk)
+               printk(KERN_ERR "matroxfb: Pixel PLL%c not locked after usual time\n", (reg-M1064_XPIXPLLAM-2)/4 + 'A');
+       selClk = inDAC1064(minfo, M1064_XPIXCLKCTRL) & ~M1064_XPIXCLKCTRL_SRC_MASK;
+       switch (flags & 0x0C) {
+               case 0x00:      selClk |= M1064_XPIXCLKCTRL_SRC_PCI; break;
+               case 0x04:      selClk |= M1064_XPIXCLKCTRL_SRC_PLL; break;
+               default:        selClk |= M1064_XPIXCLKCTRL_SRC_EXT; break;
+       }
+       outDAC1064(minfo, M1064_XPIXCLKCTRL, selClk);
+       outDAC1064(minfo, M1064_XPIXCLKCTRL, inDAC1064(minfo, M1064_XPIXCLKCTRL) & ~M1064_XPIXCLKCTRL_DIS);
+}
+
+static void MGAG100_setPixClock(const struct matrox_fb_info *minfo, int flags,
+                               int freq)
+{
+       unsigned int m, n, p;
+
+       DBG(__func__)
+
+       DAC1064_calcclock(minfo, freq, minfo->max_pixel_clock, &m, &n, &p);
+       MGAG100_progPixClock(minfo, flags, m, n, p);
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_MYSTIQUE
+static int MGA1064_preinit(struct matrox_fb_info *minfo)
+{
+       static const int vxres_mystique[] = { 512,        640, 768,  800,  832,  960,
+                                            1024, 1152, 1280,      1600, 1664, 1920,
+                                            2048,    0};
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       /* minfo->capable.cfb4 = 0; ... preinitialized by 0 */
+       minfo->capable.text = 1;
+       minfo->capable.vxres = vxres_mystique;
+
+       minfo->outputs[0].output = &m1064;
+       minfo->outputs[0].src = minfo->outputs[0].default_src;
+       minfo->outputs[0].data = minfo;
+       minfo->outputs[0].mode = MATROXFB_OUTPUT_MODE_MONITOR;
+
+       if (minfo->devflags.noinit)
+               return 0;       /* do not modify settings */
+       hw->MXoptionReg &= 0xC0000100;
+       hw->MXoptionReg |= 0x00094E20;
+       if (minfo->devflags.novga)
+               hw->MXoptionReg &= ~0x00000100;
+       if (minfo->devflags.nobios)
+               hw->MXoptionReg &= ~0x40000000;
+       if (minfo->devflags.nopciretry)
+               hw->MXoptionReg |=  0x20000000;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+       mga_setr(M_SEQ_INDEX, 0x01, 0x20);
+       mga_outl(M_CTLWTST, 0x00000000);
+       udelay(200);
+       mga_outl(M_MACCESS, 0x00008000);
+       udelay(100);
+       mga_outl(M_MACCESS, 0x0000C000);
+       return 0;
+}
+
+static void MGA1064_reset(struct matrox_fb_info *minfo)
+{
+
+       DBG(__func__);
+
+       MGA1064_ramdac_init(minfo);
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_G
+static void g450_mclk_init(struct matrox_fb_info *minfo)
+{
+       /* switch all clocks to PCI source */
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg | 4);
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION3_REG, minfo->values.reg.opt3 & ~0x00300C03);
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg);
+
+       if (((minfo->values.reg.opt3 & 0x000003) == 0x000003) ||
+           ((minfo->values.reg.opt3 & 0x000C00) == 0x000C00) ||
+           ((minfo->values.reg.opt3 & 0x300000) == 0x300000)) {
+               matroxfb_g450_setclk(minfo, minfo->values.pll.video, M_VIDEO_PLL);
+       } else {
+               unsigned long flags;
+               unsigned int pwr;
+               
+               matroxfb_DAC_lock_irqsave(flags);
+               pwr = inDAC1064(minfo, M1064_XPWRCTRL) & ~0x02;
+               outDAC1064(minfo, M1064_XPWRCTRL, pwr);
+               matroxfb_DAC_unlock_irqrestore(flags);
+       }
+       matroxfb_g450_setclk(minfo, minfo->values.pll.system, M_SYSTEM_PLL);
+       
+       /* switch clocks to their real PLL source(s) */
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg | 4);
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION3_REG, minfo->values.reg.opt3);
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg);
+
+}
+
+static void g450_memory_init(struct matrox_fb_info *minfo)
+{
+       /* disable memory refresh */
+       minfo->hw.MXoptionReg &= ~0x001F8000;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg);
+       
+       /* set memory interface parameters */
+       minfo->hw.MXoptionReg &= ~0x00207E00;
+       minfo->hw.MXoptionReg |= 0x00207E00 & minfo->values.reg.opt;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg);
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION2_REG, minfo->values.reg.opt2);
+       
+       mga_outl(M_CTLWTST, minfo->values.reg.mctlwtst);
+       
+       /* first set up memory interface with disabled memory interface clocks */
+       pci_write_config_dword(minfo->pcidev, PCI_MEMMISC_REG, minfo->values.reg.memmisc & ~0x80000000U);
+       mga_outl(M_MEMRDBK, minfo->values.reg.memrdbk);
+       mga_outl(M_MACCESS, minfo->values.reg.maccess);
+       /* start memory clocks */
+       pci_write_config_dword(minfo->pcidev, PCI_MEMMISC_REG, minfo->values.reg.memmisc | 0x80000000U);
+
+       udelay(200);
+       
+       if (minfo->values.memory.ddr && (!minfo->values.memory.emrswen || !minfo->values.memory.dll)) {
+               mga_outl(M_MEMRDBK, minfo->values.reg.memrdbk & ~0x1000);
+       }
+       mga_outl(M_MACCESS, minfo->values.reg.maccess | 0x8000);
+       
+       udelay(200);
+       
+       minfo->hw.MXoptionReg |= 0x001F8000 & minfo->values.reg.opt;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg);
+       
+       /* value is written to memory chips only if old != new */
+       mga_outl(M_PLNWT, 0);
+       mga_outl(M_PLNWT, ~0);
+       
+       if (minfo->values.reg.mctlwtst != minfo->values.reg.mctlwtst_core) {
+               mga_outl(M_CTLWTST, minfo->values.reg.mctlwtst_core);
+       }
+       
+}
+
+static void g450_preinit(struct matrox_fb_info *minfo)
+{
+       u_int32_t c2ctl;
+       u_int8_t curctl;
+       u_int8_t c1ctl;
+       
+       /* minfo->hw.MXoptionReg = minfo->values.reg.opt; */
+       minfo->hw.MXoptionReg &= 0xC0000100;
+       minfo->hw.MXoptionReg |= 0x00000020;
+       if (minfo->devflags.novga)
+               minfo->hw.MXoptionReg &= ~0x00000100;
+       if (minfo->devflags.nobios)
+               minfo->hw.MXoptionReg &= ~0x40000000;
+       if (minfo->devflags.nopciretry)
+               minfo->hw.MXoptionReg |=  0x20000000;
+       minfo->hw.MXoptionReg |= minfo->values.reg.opt & 0x03400040;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, minfo->hw.MXoptionReg);
+
+       /* Init system clocks */
+               
+       /* stop crtc2 */
+       c2ctl = mga_inl(M_C2CTL);
+       mga_outl(M_C2CTL, c2ctl & ~1);
+       /* stop cursor */
+       curctl = inDAC1064(minfo, M1064_XCURCTRL);
+       outDAC1064(minfo, M1064_XCURCTRL, 0);
+       /* stop crtc1 */
+       c1ctl = mga_readr(M_SEQ_INDEX, 1);
+       mga_setr(M_SEQ_INDEX, 1, c1ctl | 0x20);
+
+       g450_mclk_init(minfo);
+       g450_memory_init(minfo);
+       
+       /* set legacy VGA clock sources for DOSEmu or VMware... */
+       matroxfb_g450_setclk(minfo, 25175, M_PIXEL_PLL_A);
+       matroxfb_g450_setclk(minfo, 28322, M_PIXEL_PLL_B);
+
+       /* restore crtc1 */
+       mga_setr(M_SEQ_INDEX, 1, c1ctl);
+       
+       /* restore cursor */
+       outDAC1064(minfo, M1064_XCURCTRL, curctl);
+
+       /* restore crtc2 */
+       mga_outl(M_C2CTL, c2ctl);
+       
+       return;
+}
+
+static int MGAG100_preinit(struct matrox_fb_info *minfo)
+{
+       static const int vxres_g100[] = {  512,        640, 768,  800,  832,  960,
+                                          1024, 1152, 1280,      1600, 1664, 1920,
+                                          2048, 0};
+       struct matrox_hw_state *hw = &minfo->hw;
+
+        u_int32_t reg50;
+#if 0
+       u_int32_t q;
+#endif
+
+       DBG(__func__)
+
+       /* there are some instabilities if in_div > 19 && vco < 61000 */
+       if (minfo->devflags.g450dac) {
+               minfo->features.pll.vco_freq_min = 130000;      /* my sample: >118 */
+       } else {
+               minfo->features.pll.vco_freq_min = 62000;
+       }
+       if (!minfo->features.pll.ref_freq) {
+               minfo->features.pll.ref_freq     = 27000;
+       }
+       minfo->features.pll.feed_div_min = 7;
+       minfo->features.pll.feed_div_max = 127;
+       minfo->features.pll.in_div_min   = 1;
+       minfo->features.pll.in_div_max   = 31;
+       minfo->features.pll.post_shift_max = 3;
+       minfo->features.DAC1064.xvrefctrl = DAC1064_XVREFCTRL_G100_DEFAULT;
+       /* minfo->capable.cfb4 = 0; ... preinitialized by 0 */
+       minfo->capable.text = 1;
+       minfo->capable.vxres = vxres_g100;
+       minfo->capable.plnwt = minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG100
+                       ? minfo->devflags.sgram : 1;
+
+       if (minfo->devflags.g450dac) {
+               minfo->outputs[0].output = &g450out;
+       } else {
+               minfo->outputs[0].output = &m1064;
+       }
+       minfo->outputs[0].src = minfo->outputs[0].default_src;
+       minfo->outputs[0].data = minfo;
+       minfo->outputs[0].mode = MATROXFB_OUTPUT_MODE_MONITOR;
+
+       if (minfo->devflags.g450dac) {
+               /* we must do this always, BIOS does not do it for us
+                  and accelerator dies without it */
+               mga_outl(0x1C0C, 0);
+       }
+       if (minfo->devflags.noinit)
+               return 0;
+       if (minfo->devflags.g450dac) {
+               g450_preinit(minfo);
+               return 0;
+       }
+       hw->MXoptionReg &= 0xC0000100;
+       hw->MXoptionReg |= 0x00000020;
+       if (minfo->devflags.novga)
+               hw->MXoptionReg &= ~0x00000100;
+       if (minfo->devflags.nobios)
+               hw->MXoptionReg &= ~0x40000000;
+       if (minfo->devflags.nopciretry)
+               hw->MXoptionReg |=  0x20000000;
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+       DAC1064_setmclk(minfo, DAC1064_OPT_MDIV2 | DAC1064_OPT_GDIV3 | DAC1064_OPT_SCLK_PCI, 133333);
+
+       if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG100) {
+               pci_read_config_dword(minfo->pcidev, PCI_OPTION2_REG, &reg50);
+               reg50 &= ~0x3000;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION2_REG, reg50);
+
+               hw->MXoptionReg |= 0x1080;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+               mga_outl(M_CTLWTST, minfo->values.reg.mctlwtst);
+               udelay(100);
+               mga_outb(0x1C05, 0x00);
+               mga_outb(0x1C05, 0x80);
+               udelay(100);
+               mga_outb(0x1C05, 0x40);
+               mga_outb(0x1C05, 0xC0);
+               udelay(100);
+               reg50 &= ~0xFF;
+               reg50 |=  0x07;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION2_REG, reg50);
+               /* it should help with G100 */
+               mga_outb(M_GRAPHICS_INDEX, 6);
+               mga_outb(M_GRAPHICS_DATA, (mga_inb(M_GRAPHICS_DATA) & 3) | 4);
+               mga_setr(M_EXTVGA_INDEX, 0x03, 0x81);
+               mga_setr(M_EXTVGA_INDEX, 0x04, 0x00);
+               mga_writeb(minfo->video.vbase, 0x0000, 0xAA);
+               mga_writeb(minfo->video.vbase, 0x0800, 0x55);
+               mga_writeb(minfo->video.vbase, 0x4000, 0x55);
+#if 0
+               if (mga_readb(minfo->video.vbase, 0x0000) != 0xAA) {
+                       hw->MXoptionReg &= ~0x1000;
+               }
+#endif
+               hw->MXoptionReg |= 0x00078020;
+       } else if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG200) {
+               pci_read_config_dword(minfo->pcidev, PCI_OPTION2_REG, &reg50);
+               reg50 &= ~0x3000;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION2_REG, reg50);
+
+               if (minfo->devflags.memtype == -1)
+                       hw->MXoptionReg |= minfo->values.reg.opt & 0x1C00;
+               else
+                       hw->MXoptionReg |= (minfo->devflags.memtype & 7) << 10;
+               if (minfo->devflags.sgram)
+                       hw->MXoptionReg |= 0x4000;
+               mga_outl(M_CTLWTST, minfo->values.reg.mctlwtst);
+               mga_outl(M_MEMRDBK, minfo->values.reg.memrdbk);
+               udelay(200);
+               mga_outl(M_MACCESS, 0x00000000);
+               mga_outl(M_MACCESS, 0x00008000);
+               udelay(100);
+               mga_outw(M_MEMRDBK, minfo->values.reg.memrdbk);
+               hw->MXoptionReg |= 0x00078020;
+       } else {
+               pci_read_config_dword(minfo->pcidev, PCI_OPTION2_REG, &reg50);
+               reg50 &= ~0x00000100;
+               reg50 |=  0x00000000;
+               pci_write_config_dword(minfo->pcidev, PCI_OPTION2_REG, reg50);
+
+               if (minfo->devflags.memtype == -1)
+                       hw->MXoptionReg |= minfo->values.reg.opt & 0x1C00;
+               else
+                       hw->MXoptionReg |= (minfo->devflags.memtype & 7) << 10;
+               if (minfo->devflags.sgram)
+                       hw->MXoptionReg |= 0x4000;
+               mga_outl(M_CTLWTST, minfo->values.reg.mctlwtst);
+               mga_outl(M_MEMRDBK, minfo->values.reg.memrdbk);
+               udelay(200);
+               mga_outl(M_MACCESS, 0x00000000);
+               mga_outl(M_MACCESS, 0x00008000);
+               udelay(100);
+               mga_outl(M_MEMRDBK, minfo->values.reg.memrdbk);
+               hw->MXoptionReg |= 0x00040020;
+       }
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+       return 0;
+}
+
+static void MGAG100_reset(struct matrox_fb_info *minfo)
+{
+       u_int8_t b;
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       DBG(__func__)
+
+       {
+#ifdef G100_BROKEN_IBM_82351
+               u_int32_t d;
+
+               find 1014/22 (IBM/82351); /* if found and bridging Matrox, do some strange stuff */
+               pci_read_config_byte(ibm, PCI_SECONDARY_BUS, &b);
+               if (b == minfo->pcidev->bus->number) {
+                       pci_write_config_byte(ibm, PCI_COMMAND+1, 0);   /* disable back-to-back & SERR */
+                       pci_write_config_byte(ibm, 0x41, 0xF4);         /* ??? */
+                       pci_write_config_byte(ibm, PCI_IO_BASE, 0xF0);  /* ??? */
+                       pci_write_config_byte(ibm, PCI_IO_LIMIT, 0x00); /* ??? */
+               }
+#endif
+               if (!minfo->devflags.noinit) {
+                       if (x7AF4 & 8) {
+                               hw->MXoptionReg |= 0x40;        /* FIXME... */
+                               pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+                       }
+                       mga_setr(M_EXTVGA_INDEX, 0x06, 0x00);
+               }
+       }
+       if (minfo->devflags.g450dac) {
+               /* either leave MCLK as is... or they were set in preinit */
+               hw->DACclk[3] = inDAC1064(minfo, DAC1064_XSYSPLLM);
+               hw->DACclk[4] = inDAC1064(minfo, DAC1064_XSYSPLLN);
+               hw->DACclk[5] = inDAC1064(minfo, DAC1064_XSYSPLLP);
+       } else {
+               DAC1064_setmclk(minfo, DAC1064_OPT_RESERVED | DAC1064_OPT_MDIV2 | DAC1064_OPT_GDIV1 | DAC1064_OPT_SCLK_PLL, 133333);
+       }
+       if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400) {
+               if (minfo->devflags.dfp_type == -1) {
+                       minfo->devflags.dfp_type = inDAC1064(minfo, 0x1F);
+               }
+       }
+       if (minfo->devflags.noinit)
+               return;
+       if (minfo->devflags.g450dac) {
+       } else {
+               MGAG100_setPixClock(minfo, 4, 25175);
+               MGAG100_setPixClock(minfo, 5, 28322);
+               if (x7AF4 & 0x10) {
+                       b = inDAC1064(minfo, M1064_XGENIODATA) & ~1;
+                       outDAC1064(minfo, M1064_XGENIODATA, b);
+                       b = inDAC1064(minfo, M1064_XGENIOCTRL) | 1;
+                       outDAC1064(minfo, M1064_XGENIOCTRL, b);
+               }
+       }
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_MYSTIQUE
+static void MGA1064_restore(struct matrox_fb_info *minfo)
+{
+       int i;
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       CRITFLAGS
+
+       DBG(__func__)
+
+       CRITBEGIN
+
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+       mga_outb(M_IEN, 0x00);
+       mga_outb(M_CACHEFLUSH, 0x00);
+
+       CRITEND
+
+       DAC1064_restore_1(minfo);
+       matroxfb_vgaHWrestore(minfo);
+       minfo->crtc1.panpos = -1;
+       for (i = 0; i < 6; i++)
+               mga_setr(M_EXTVGA_INDEX, i, hw->CRTCEXT[i]);
+       DAC1064_restore_2(minfo);
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_G
+static void MGAG100_restore(struct matrox_fb_info *minfo)
+{
+       int i;
+       struct matrox_hw_state *hw = &minfo->hw;
+
+       CRITFLAGS
+
+       DBG(__func__)
+
+       CRITBEGIN
+
+       pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, hw->MXoptionReg);
+       CRITEND
+
+       DAC1064_restore_1(minfo);
+       matroxfb_vgaHWrestore(minfo);
+       if (minfo->devflags.support32MB)
+               mga_setr(M_EXTVGA_INDEX, 8, hw->CRTCEXT[8]);
+       minfo->crtc1.panpos = -1;
+       for (i = 0; i < 6; i++)
+               mga_setr(M_EXTVGA_INDEX, i, hw->CRTCEXT[i]);
+       DAC1064_restore_2(minfo);
+}
+#endif
+
+#ifdef CONFIG_FB_MATROX_MYSTIQUE
+struct matrox_switch matrox_mystique = {
+       MGA1064_preinit, MGA1064_reset, MGA1064_init, MGA1064_restore,
+};
+EXPORT_SYMBOL(matrox_mystique);
+#endif
+
+#ifdef CONFIG_FB_MATROX_G
+struct matrox_switch matrox_G100 = {
+       MGAG100_preinit, MGAG100_reset, MGAG100_init, MGAG100_restore,
+};
+EXPORT_SYMBOL(matrox_G100);
+#endif
+
+#ifdef NEED_DAC1064
+EXPORT_SYMBOL(DAC1064_global_init);
+EXPORT_SYMBOL(DAC1064_global_restore);
+#endif
+MODULE_LICENSE("GPL");