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fixed cursor visibility update on show/hide_cursor commands for secondary head on NV40 architecture (hardware bug workaround). Confirmed Dualhead up and working correctly with two analog connected screens on PCIe 6600 GT.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11368 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2005-02-14 14:16:50 +00:00
parent 0d0f1600ef
commit 11058c2f96
1 changed files with 11 additions and 1 deletions
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src/add-ons/accelerants/nvidia/engine/nv_crtc2.c
+11 -1
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@@ -1,6 +1,6 @@
/* second CTRC functionality for GeForce cards */ /* second CTRC functionality for GeForce cards */
/* Author: /* Author:
Rudolf Cornelissen 11/2002-1/2005 Rudolf Cornelissen 11/2002-2/2005
*/ */
#define MODULE_BIT 0x00020000 #define MODULE_BIT 0x00020000
@@ -682,6 +682,11 @@ status_t nv_crtc2_cursor_show()
/* b0 = 1 enables cursor */ /* b0 = 1 enables cursor */
CRTC2W(CURCTL0, (CRTC2R(CURCTL0) | 0x01)); CRTC2W(CURCTL0, (CRTC2R(CURCTL0) | 0x01));
/* workaround for hardware bug confirmed existing on NV43:
* Cursor visibility is not updated without a position update if its hardware
* retrace sync is enabled. */
if (si->ps.card_arch == NV40A) DAC2W(CURPOS, (DAC2R(CURPOS)));
return B_OK; return B_OK;
} }
@@ -695,6 +700,11 @@ status_t nv_crtc2_cursor_hide()
/* b0 = 0 disables cursor */ /* b0 = 0 disables cursor */
CRTC2W(CURCTL0, (CRTC2R(CURCTL0) & 0xfe)); CRTC2W(CURCTL0, (CRTC2R(CURCTL0) & 0xfe));
/* workaround for hardware bug confirmed existing on NV43:
* Cursor visibility is not updated without a position update if its hardware
* retrace sync is enabled. */
if (si->ps.card_arch == NV40A) DAC2W(CURPOS, (DAC2R(CURPOS)));
return B_OK; return B_OK;
} }