[PATCH 1/2] Since G965 class hardware has overlay too, enable it

[Maxim Levitsky]

From 140320b85c634ad58701243fde3ff41cdcf1863d Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <maximlevitsky at gmail.com>
Date: Sun, 24 Feb 2008 17:31:35 +0200
Subject: [PATCH] Since G965 class hardware has overlay too, enable it

*replace explicit checks for G965 for having no overlay since it has one,
 with general check for future chips that may have no overlay.

*make overlay registers to be mapped correctly for G965
*remove a check for register bit that isn't present on G965
"(INREG(pipeconf_reg) & PIPEACONF_DOUBLE_WIDE)"
---
 src/common.h      |    5 ++++-
 src/i830_memory.c |    2 +-
 src/i830_video.c  |   10 ++++------
 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/common.h b/src/common.h
index c0af1ad..f7e47e7 100644
--- a/src/common.h
+++ b/src/common.h
@@ -440,7 +440,10 @@ extern int I810_DEBUG;
 
 #define IS_MOBILE(pI810) (IS_I830(pI810) || IS_I85X(pI810) || IS_I915GM(pI810) || IS_I945GM(pI810) || IS_I965GM(pI810) || IS_IGD_GM(pI810))
 /* mark chipsets for using gfx VM offset for overlay */
-#define OVERLAY_NOPHYSICAL(pI810) (IS_G33CLASS(pI810))
+#define OVERLAY_NOPHYSICAL(pI810) (IS_G33CLASS(pI810) || IS_I965G(pI810))
+#define HW_HAS_OVERLAY(pI810) (1)
+
+
 /* chipsets require graphics mem for hardware status page */
 #define HWS_NEED_GFX(pI810) (IS_G33CLASS(pI810) || IS_IGD_GM(pI810))
 
diff --git a/src/i830_memory.c b/src/i830_memory.c
index 1861c64..2d8c40f 100644
--- a/src/i830_memory.c
+++ b/src/i830_memory.c
@@ -1044,7 +1044,7 @@ i830_allocate_overlay(ScrnInfoPtr pScrn)
     if (!OVERLAY_NOPHYSICAL(pI830))
 	flags |= NEED_PHYSICAL_ADDR;
 
-    if (!IS_I965G(pI830)) {
+    if (HW_HAS_OVERLAY(pI830)) {
 	pI830->overlay_regs = i830_allocate_memory(pScrn, "overlay registers",
 						   OVERLAY_SIZE, GTT_PAGE_SIZE,
 						   flags);
diff --git a/src/i830_video.c b/src/i830_video.c
index 79e0574..894f55a 100644
--- a/src/i830_video.c
+++ b/src/i830_video.c
@@ -352,7 +352,7 @@ i830_overlay_switch_to_crtc (ScrnInfoPtr pScrn, xf86CrtcPtr crtc)
     I830CrtcPrivatePtr  intel_crtc = crtc->driver_private;
     int			pipeconf_reg = intel_crtc->pipe == 0 ? PIPEACONF : PIPEBCONF;
 
-    if (INREG(pipeconf_reg) & PIPEACONF_DOUBLE_WIDE)
+    if (!IS_I965G(pI830) && (INREG(pipeconf_reg) & PIPEACONF_DOUBLE_WIDE))
 	pPriv->overlayOK = FALSE;
     else
 	pPriv->overlayOK = TRUE;
@@ -580,7 +580,7 @@ I830InitVideo(ScreenPtr pScreen)
     }
 
     /* Set up overlay video if we can do it at this depth. */
-    if (!IS_I965G(pI830) && pScrn->bitsPerPixel != 8 &&
+    if (HW_HAS_OVERLAY(pI830) && pScrn->bitsPerPixel != 8 &&
 	pI830->overlay_regs != NULL)
     {
 	overlayAdaptor = I830SetupImageVideoOverlay(pScreen);
@@ -2563,8 +2563,7 @@ I830VideoBlockHandler(int i, pointer blockData, pointer pTimeout,
     if (pI830->adaptor == NULL)
         return;
 
-    /* No overlay scaler on the 965. */
-    if (IS_I965G(pI830))
+    if (!HW_HAS_OVERLAY(pI830))
         return;
 
     pPriv = GET_PORT_PRIVATE(pScrn);
@@ -2846,8 +2845,7 @@ i830_crtc_dpms_video(xf86CrtcPtr crtc, Bool on)
     if (pI830->adaptor == NULL)
 	return;
 
-    /* No overlay scaler on the 965. */
-    if (IS_I965G(pI830))
+    if (!HW_HAS_OVERLAY(pI830))
 	return;
 
     pPriv = GET_PORT_PRIVATE(pScrn);
-- 
1.5.3.8