This one's also from Jordan.
>From dea8d19f689706985b30be745ef1151082866374 Mon Sep 17 00:00:00 2001
From: Jordan Crouse <[EMAIL PROTECTED]>
Date: Fri, 22 Feb 2008 19:55:09 -0500
Subject: [PATCH] gxfb: Don't enable the CRT DACs when we are in flatpanel mode
When the FP strap is enabled, don't turn on the CRT DACs - that will save
about 35 mA of power.
Updated/cleaned up by Andres Salomon.
Signed-off-by: Andres Salomon <[EMAIL PROTECTED]>
Acked-by: Jordan Crouse <[EMAIL PROTECTED]>
---
drivers/video/geode/video_gx.c | 32 +++++++++++++++++---------------
1 files changed, 17 insertions(+), 15 deletions(-)
diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c
index a53936f..b436155 100644
--- a/drivers/video/geode/video_gx.c
+++ b/drivers/video/geode/video_gx.c
@@ -238,18 +238,6 @@ static void gx_configure_display(struct fb_info *info)
struct geodefb_par *par = info->par;
u32 dcfg, misc;
- /* Set up the MISC register */
-
- misc = readl(par->vid_regs + GX_MISC);
-
- /* Power up the DAC */
- misc &= ~(GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN);
-
- /* Disable gamma correction */
- misc |= GX_MISC_GAM_EN;
-
- writel(misc, par->vid_regs + GX_MISC);
-
/* Write the display configuration */
dcfg = readl(par->vid_regs + GX_DCFG);
@@ -268,14 +256,28 @@ static void gx_configure_display(struct fb_info *info)
/* Enable hsync and vsync. */
dcfg |= GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN;
- /* Only change the sync polarities if we are running
- * in CRT mode. The FP polarities will be handled in
- * gxfb_configure_tft */
+ misc = readl(par->vid_regs + GX_MISC);
+
+ /* Disable gamma correction */
+ misc |= GX_MISC_GAM_EN;
+
if (par->enable_crt) {
+
+ /* Power up the CRT DACs */
+ misc &= ~(GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN);
+ writel(misc, par->vid_regs + GX_MISC);
+
+ /* Only change the sync polarities if we are running
+ * in CRT mode. The FP polarities will be handled in
+ * gxfb_configure_tft */
if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
dcfg |= GX_DCFG_CRT_HSYNC_POL;
if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
dcfg |= GX_DCFG_CRT_VSYNC_POL;
+ } else {
+ /* Power down the CRT DACs if in FP mode */
+ misc |= (GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN);
+ writel(misc, par->vid_regs + GX_MISC);
}
/* Enable the display logic */
--
1.5.3.7
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