Add model-specific tweaks for some funky 945GM boards.

For the Aopen Mini-PC, ignore the claimed attached 800x600 LVDS panel.
Likewise for the Apple Mac Mini, but done slightly differently since it
shares PCI IDs with the Macbook Pro.

1 files changed, 24 insertions, 11 deletions

diff --git a/src/i830_driver.c b/src/i830_driver.c
index 8464b39f..75ea480c 100644
--- a/src/i830_driver.c
+++ b/src/i830_driver.c
@@ -1231,7 +1231,7 @@ I830BIOSPreInit(ScrnInfoPtr pScrn, int flags)
    int i, n;
    char *s;
    pointer pVBEModule = NULL;
-   Bool enable, has_lvds;
+   Bool enable, has_lvds, is_apple_945gm = FALSE;
    const char *chipname;
    unsigned int ver;
    char v[5];
@@ -1672,16 +1672,15 @@ I830BIOSPreInit(ScrnInfoPtr pScrn, int flags)
    if (!i830GetLVDSInfoFromBIOS(pScrn))
       has_lvds = FALSE;
 
-   /* If the panel sequencing, status, and control registers are all zero,
-    * assume there's no panel attached.  This is the case on the Mac mini,
-    * which is an i945GM but has no LVDS.  If we tried to power something on
-    * with zeroed panel sequencing registers, it probably wouldn't be a good
-    * thing anyway.
-    */
-   if (INREG(PP_STATUS) == 0 && INREG(PP_CONTROL) == 0 &&
-       INREG(LVDSPP_ON) == 0 && INREG(LVDSPP_OFF) == 0)
-   {
-      has_lvds = FALSE;
+   /* Blacklist machines with known broken BIOSes */
+   if (pI830->PciInfo->chipType == PCI_CHIP_I945_GM) {
+	if ((pI830->PciInfo->subsysVendor == 0xa0a0) &&
+	    (pI830->PciInfo->subsysCard == 0x0589))  /* aopen mini pc */
+	    has_lvds = FALSE;
+
+	if ((pI830->PciInfo->subsysVendor == 0x8086) &&
+	    (pI830->PciInfo->subsysCard == 0x7270)) /* mini, macbook pro... */
+	    is_apple_945gm = TRUE;
    }
 
    if ((s = xf86GetOptValString(pI830->Options, OPTION_MONITOR_LAYOUT)) &&
@@ -1772,6 +1771,20 @@ I830BIOSPreInit(ScrnInfoPtr pScrn, int flags)
       pI830->specifiedMonitor = TRUE;
    } else if (I830IsPrimary(pScrn)) {
       /* Choose a default set of outputs to use based on what we've detected. */
+
+      /*
+       * Apple hardware is out to get us.  The macbook pro has a real LVDS
+       * panel, but the mac mini does not, and they have the same device IDs.
+       * We'll distinguish by panel size, on the assumption that Apple isn't
+       * about to make any machines with an 800x600 display.
+       */
+      if (is_apple_945gm && pI830->PanelXRes == 800 && pI830->PanelYRes == 600)
+      {
+	  xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+		     "Suspected Mac Mini, ignoring the LFP\n");
+	  has_lvds = FALSE;
+      }
+
       if (has_lvds) {
 	 pI830->MonType2 |= PIPE_LFP;
       }