diff options
Diffstat (limited to 'drivers/video/geode/video_gx.c')
| -rw-r--r-- | drivers/video/geode/video_gx.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c index 2b2a7880ea7..616ce339c5f 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); |