summaryrefslogtreecommitdiffstats
path: root/drivers/video/geode/video_gx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video/geode/video_gx.c')
-rw-r--r--drivers/video/geode/video_gx.c24
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c
index 2b2a7880ea75..616ce339c5fa 100644
--- a/drivers/video/geode/video_gx.c
+++ b/drivers/video/geode/video_gx.c
@@ -178,7 +178,21 @@ static void gx_set_dclk_frequency(struct fb_info *info)
static void gx_configure_display(struct fb_info *info)
{
struct geodefb_par *par = info->par;
- u32 dcfg, fp_pm;
+ u32 dcfg, fp_pm, 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);
@@ -199,9 +213,17 @@ static void gx_configure_display(struct fb_info *info)
if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
dcfg |= GX_DCFG_CRT_VSYNC_POL;
+ /* Enable the display logic */
+ /* Set up the DACS to blank normally */
+
+ dcfg |= GX_DCFG_CRT_EN | GX_DCFG_DAC_BL_EN;
+
+ /* Enable the external DAC VREF? */
+
writel(dcfg, par->vid_regs + GX_DCFG);
/* Power on flat panel. */
+
fp_pm = readl(par->vid_regs + GX_FP_PM);
fp_pm |= GX_FP_PM_P;
writel(fp_pm, par->vid_regs + GX_FP_PM);