intelfb: add hw cursor support for i9xx

This adds hw cursor support for the i9xx chipsets.
Signed-off-by: Dave Airlie <airlied@linux.ie>

drivers/video/intelfb/intelfb.h

@@ -284,6 +284,8 @@ struct intelfb_info {
 	int pll_index;
 };
 
+#define IS_I9xx(dinfo) (((dinfo)->chipset == INTEL_915G)||(dinfo->chipset == INTEL_915GM)||((dinfo)->chipset == INTEL_945G))
+
 /*** function prototypes ***/
 
 extern int intelfb_var_to_depth(const struct fb_var_screeninfo *var);

drivers/video/intelfb/intelfbdrv.c

@@ -6,6 +6,7 @@
  *
  * Copyright  2002, 2003 David Dawes <dawes@xfree86.org>
  *                   2004 Sylvain Meyer
+ *                   2006 David Airlie
  *
  * This driver consists of two parts.  The first part (intelfbdrv.c) provides
  * the basic fbdev interfaces, is derived in part from the radeonfb and
@@ -551,8 +552,6 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 	    (ent->device == PCI_DEVICE_ID_INTEL_945G)) {
 		aperture_bar = 2;
 		mmio_bar = 0;
-		/* Disable HW cursor on 9x5G/M (not implemented yet) */
-		hwcursor = 0;
 	}
 	dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
 	dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
@@ -1468,7 +1467,7 @@ static int
 intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 {
         struct intelfb_info *dinfo = GET_DINFO(info);
-
+	int ret;
 #if VERBOSE > 0
 	DBG_MSG("intelfb_cursor\n");
 #endif
@@ -1479,7 +1478,12 @@ intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 	intelfbhw_cursor_hide(dinfo);
 
 	/* If XFree killed the cursor - restore it */
-	if (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12) {
+	if (dinfo->mobile || IS_I9xx(dinfo))
+	  ret = (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.physical);
+	else
+	  ret = (INREG(CURSOR_A_BASEADDR) != dinfo->cursor.offset << 12);
+
+	if (ret) {
 		u32 fg, bg;
 
 		DBG_MSG("the cursor was killed - restore it !!\n");

drivers/video/intelfb/intelfbhw.c

@@ -1742,7 +1742,7 @@ intelfbhw_cursor_init(struct intelfb_info *dinfo)
 	DBG_MSG("intelfbhw_cursor_init\n");
 #endif
 
-	if (dinfo->mobile) {
+	if (dinfo->mobile || IS_I9xx(dinfo)) {
 		if (!dinfo->cursor.physical)
 			return;
 		tmp = INREG(CURSOR_A_CONTROL);
@@ -1775,7 +1775,7 @@ intelfbhw_cursor_hide(struct intelfb_info *dinfo)
 #endif
 
 	dinfo->cursor_on = 0;
-	if (dinfo->mobile) {
+	if (dinfo->mobile || IS_I9xx(dinfo)) {
 		if (!dinfo->cursor.physical)
 			return;
 		tmp = INREG(CURSOR_A_CONTROL);
@@ -1805,7 +1805,7 @@ intelfbhw_cursor_show(struct intelfb_info *dinfo)
 	if (dinfo->cursor_blanked)
 		return;
 
-	if (dinfo->mobile) {
+	if (dinfo->mobile || IS_I9xx(dinfo)) {
 		if (!dinfo->cursor.physical)
 			return;
 		tmp = INREG(CURSOR_A_CONTROL);
@@ -1839,6 +1839,10 @@ intelfbhw_cursor_setpos(struct intelfb_info *dinfo, int x, int y)
 	tmp = ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT) |
 	      ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);
 	OUTREG(CURSOR_A_POSITION, tmp);
+
+	if (IS_I9xx(dinfo)) {
+		OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical);
+	}
 }
 
 void