X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fvideo%2Fmatrox%2Fmatroxfb_misc.c;h=18886b629cb1bb3c8fcea5cb9a0f4132f0fdb20c;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=76fd3a519b8af1d1d637a308c6d1e969bf99b37c;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git

diff --git a/drivers/video/matrox/matroxfb_misc.c b/drivers/video/matrox/matroxfb_misc.c
index 76fd3a519..18886b629 100644
--- 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)
  *
@@ -81,8 +84,6 @@
  *
  */
 
-/* make checkconfig does not check includes for this... */
-#include <linux/config.h>
 
 #include "matroxfb_misc.h"
 #include <linux/interrupt.h>
@@ -189,18 +190,12 @@ 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 +230,7 @@ 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 +491,35 @@ 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 +775,8 @@ 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);