Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / drivers / video / matrox / matroxfb_misc.c

diff --git a/drivers/video/matrox/matroxfb_misc.c b/drivers/video/matrox/matroxfb_misc.c
index 76fd3a5..263d801 100644 (file)
--- a/drivers/video/matrox/matroxfb_misc.c
+++ b/drivers/video/matrox/matroxfb_misc.c
@@ -68,6 +68,9 @@
  *               "David C. Hansen" <haveblue@us.ibm.com>
  *                     Fixes
  *
+ *               "Ian Romanick" <idr@us.ibm.com>
+ *                     Find PInS data in BIOS on PowerPC systems.
+ *
  * (following author is not in any relation with this code, but his code
  *  is included in this driver)
  *
@@ -81,7 +84,6 @@
  *
  */
 
-/* make checkconfig does not check includes for this... */
 #include <linux/config.h>
 
 #include "matroxfb_misc.h"
@@ -189,18 +191,12 @@ int matroxfb_vgaHWinit(WPMINFO struct my_timming* m) {
        unsigned int wd;
        unsigned int divider;
        int i;
-       int fwidth;
        struct matrox_hw_state * const hw = &ACCESS_FBINFO(hw);
 
-       fwidth = 8;
-
        DBG(__FUNCTION__)
 
        hw->SEQ[0] = 0x00;
-       if (fwidth == 9)
-               hw->SEQ[1] = 0x00;
-       else
-               hw->SEQ[1] = 0x01;      /* or 0x09 */
+       hw->SEQ[1] = 0x01;      /* or 0x09 */
        hw->SEQ[2] = 0x0F;      /* bitplanes */
        hw->SEQ[3] = 0x00;
        hw->SEQ[4] = 0x0E;
@@ -235,10 +231,7 @@ int matroxfb_vgaHWinit(WPMINFO struct my_timming* m) {
        hw->ATTR[16] = 0x41;
        hw->ATTR[17] = 0xFF;
        hw->ATTR[18] = 0x0F;
-       if (fwidth == 9)
-               hw->ATTR[19] = 0x08;
-       else
-               hw->ATTR[19] = 0x00;
+       hw->ATTR[19] = 0x00;
        hw->ATTR[20] = 0x00;
 
        hd = m->HDisplay >> 3;
@@ -499,10 +492,35 @@ static void parse_bios(unsigned char __iomem* vbios, struct matrox_bios* bd) {
        get_bios_version(vbios, bd);
        get_bios_output(vbios, bd);
        get_bios_tvout(vbios, bd);
+#if defined(__powerpc__)
+       /* On PowerPC cards, the PInS offset isn't stored at the end of the
+        * BIOS image.  Instead, you must search the entire BIOS image for
+        * the magic PInS signature.
+        *
+        * This actually applies to all OpenFirmware base cards.  Since these
+        * cards could be put in a MIPS or SPARC system, should the condition
+        * be something different?
+        */
+       for ( pins_offset = 0 ; pins_offset <= 0xFF80 ; pins_offset++ ) {
+               unsigned char header[3];
+
+               header[0] = readb(vbios + pins_offset);
+               header[1] = readb(vbios + pins_offset + 1);
+               header[2] = readb(vbios + pins_offset + 2);
+               if ( (header[0] == 0x2E) && (header[1] == 0x41)
+                    && ((header[2] == 0x40) || (header[2] == 0x80)) ) {
+                       printk(KERN_INFO "PInS data found at offset %u\n",
+                              pins_offset);
+                       get_pins(vbios + pins_offset, bd);
+                       break;
+               }
+       }
+#else
        pins_offset = readb(vbios + 0x7FFC) | (readb(vbios + 0x7FFD) << 8);
        if (pins_offset <= 0xFF80) {
                get_pins(vbios + pins_offset, bd);
        }
+#endif
 }
 
 #define get_u16(x) (le16_to_cpu(get_unaligned((__u16*)(x))))
@@ -758,6 +776,8 @@ void matroxfb_read_pins(WPMINFO2) {
        }
 #endif
        matroxfb_set_limits(PMINFO &ACCESS_FBINFO(bios));
+       printk(KERN_INFO "PInS memtype = %u\n",
+              (ACCESS_FBINFO(values).reg.opt & 0x1C00) >> 10);
 }
 
 EXPORT_SYMBOL(matroxfb_DAC_in);