Attachment 20484 Details for Bug 17508 – set LVDS reference divisor based on current block

[patch] set LVDS reference divisor based on current block

0001-Set-LVDS-reference-divisor-based-on-current-clock.patch (text/plain), 1.05 KB, created by Wang Zhenyu on 2008-11-20 19:06:06 UTC

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Creator: Wang Zhenyu

Created: 2008-11-20 19:06:06 UTC

Size: 1.05 KB

patch

obsolete

>From da0d12bd9f2cbb6d4de0f0c1519c2149523567f6 Mon Sep 17 00:00:00 2001
>From: root <root@debian-t61.sh.intel.com>
>Date: Fri, 21 Nov 2008 18:58:45 +0800
>Subject: [PATCH] Set LVDS reference divisor based on current clock
>
>---
> src/i830_lvds.c |    4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
>diff --git a/src/i830_lvds.c b/src/i830_lvds.c
>index 239bc89..88276bd 100644
>--- a/src/i830_lvds.c
>+++ b/src/i830_lvds.c
>@@ -754,12 +754,16 @@ i830_lvds_mode_set(xf86OutputPtr output, DisplayModePtr mode,
>     struct i830_lvds_priv   *dev_priv = intel_output->dev_priv;
>     ScrnInfoPtr		    pScrn = output->scrn;
>     I830Ptr		    pI830 = I830PTR(pScrn);
>+    uint8_t		    pwr_cycle = INREG(PP_DIVISOR) & 0xff;
> 
>     /*
>      * PFIT must be enabled/disabled while LVDS is on but pipes are still off
>      */
>     OUTREG(PFIT_PGM_RATIOS, dev_priv->pfit_pgm_ratios);
>     OUTREG(PFIT_CONTROL, dev_priv->pfit_control);
>+
>+    /* reference divider is (100 * ClkInMhz) / 2 - 1 */
>+    OUTREG(PP_DIVISOR, ((adjusted_mode->Clock/ 20 - 1) << 8) | pwr_cycle);
> }
> 
> /**
>-- 
>1.5.3.8
>

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