Attachment 32086 Details for Bug 22140 – possible fix

[patch] possible fix

0001-fix-200M-freezes-on-VT-switch-if-CRTC-is-disabled.patch (text/plain), 1.48 KB, created by Alex Deucher on 2009-12-15 08:25:20 UTC

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Creator: Alex Deucher

Created: 2009-12-15 08:25:20 UTC

Size: 1.48 KB

patch

obsolete

>From 3a30210d50b27f8772fc5045133940246764fce9 Mon Sep 17 00:00:00 2001
>From: Matthias Hopf <mhopf@suse.de>
>Date: Tue, 15 Dec 2009 10:53:48 -0500
>Subject: [PATCH] fix 200M freezes on VT switch if CRTC is disabled
>
>It appears that RS4xx chips need to have the crtc
>enabled when the timing is programmed.
>
>agd5f: minor fixes/cleanup of the original patch
>---
> src/legacy_crtc.c |   10 ++++++++++
> 1 files changed, 10 insertions(+), 0 deletions(-)
>
>diff --git a/src/legacy_crtc.c b/src/legacy_crtc.c
>index ed339ab..0ad762b 100644
>--- a/src/legacy_crtc.c
>+++ b/src/legacy_crtc.c
>@@ -912,6 +912,11 @@ RADEONInitCrtcRegisters(xf86CrtcPtr crtc, RADEONSavePtr save,
> 			      ? RADEON_CRTC_INTERLACE_EN
> 			      : 0));
> 
>+    /* 200M freezes on VT switch sometimes if CRTC is disabled */
>+    if ((info->ChipFamily == CHIP_FAMILY_RS400) ||
>+	(info->ChipFamily == CHIP_FAMILY_RS480))
>+	save->crtc_gen_cntl |= RADEON_CRTC_EN;
>+
>     save->crtc_ext_cntl |= (RADEON_XCRT_CNT_EN|
> 			    RADEON_CRTC_VSYNC_DIS |
> 			    RADEON_CRTC_HSYNC_DIS |
>@@ -1162,6 +1167,11 @@ RADEONInitCrtc2Registers(xf86CrtcPtr crtc, RADEONSavePtr save,
> 				? RADEON_CRTC2_INTERLACE_EN
> 				: 0));
> 
>+    /* 200M freezes on VT switch sometimes if CRTC is disabled */
>+    if ((info->ChipFamily == CHIP_FAMILY_RS400) ||
>+	(info->ChipFamily == CHIP_FAMILY_RS480))
>+	save->crtc2_gen_cntl |= RADEON_CRTC2_EN;
>+
>     save->disp2_merge_cntl = info->SavedReg->disp2_merge_cntl;
>     save->disp2_merge_cntl &= ~(RADEON_DISP2_RGB_OFFSET_EN);
> 
>-- 
>1.5.4.3
>

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Attachments on bug 22140: 26511 | 26512 | 31702 | 31703 | 31711 | 32086

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