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authorAndres Salomon <dilinger@queued.net>2008-04-28 02:15:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:40 -0700
commit4537f93ae88c77a26e77d192ca32a0c2cd359592 (patch)
tree457a32bfcf492d567cdc8d9b97b55536335e9d63 /drivers/video/geode
parent564820d42aaa55e6ce60a59c0f60832e1330c58b (diff)
downloadop-kernel-dev-4537f93ae88c77a26e77d192ca32a0c2cd359592.zip
op-kernel-dev-4537f93ae88c77a26e77d192ca32a0c2cd359592.tar.gz
lxfb/gxfb: when blanking with FB_BLANK_POWERDOWN, also turn off the CRT
The Display Control's CRT_EN can be shut off when we enter FB_BLANK_POWERDOWN in an attempt to save additional power. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Jordan Crouse <jordan.crouse@amd.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/geode')
-rw-r--r--drivers/video/geode/lxfb_ops.c17
-rw-r--r--drivers/video/geode/video_gx.c18
2 files changed, 20 insertions, 15 deletions
diff --git a/drivers/video/geode/lxfb_ops.c b/drivers/video/geode/lxfb_ops.c
index 7abc439..531fcdc 100644
--- a/drivers/video/geode/lxfb_ops.c
+++ b/drivers/video/geode/lxfb_ops.c
@@ -524,37 +524,40 @@ int lx_blank_display(struct fb_info *info, int blank_mode)
{
struct lxfb_par *par = info->par;
u32 dcfg, fp_pm;
- int blank, hsync, vsync;
+ int blank, hsync, vsync, crt;
/* CRT power saving modes. */
switch (blank_mode) {
case FB_BLANK_UNBLANK:
- blank = 0; hsync = 1; vsync = 1;
+ blank = 0; hsync = 1; vsync = 1; crt = 1;
break;
case FB_BLANK_NORMAL:
- blank = 1; hsync = 1; vsync = 1;
+ blank = 1; hsync = 1; vsync = 1; crt = 1;
break;
case FB_BLANK_VSYNC_SUSPEND:
- blank = 1; hsync = 1; vsync = 0;
+ blank = 1; hsync = 1; vsync = 0; crt = 1;
break;
case FB_BLANK_HSYNC_SUSPEND:
- blank = 1; hsync = 0; vsync = 1;
+ blank = 1; hsync = 0; vsync = 1; crt = 1;
break;
case FB_BLANK_POWERDOWN:
- blank = 1; hsync = 0; vsync = 0;
+ blank = 1; hsync = 0; vsync = 0; crt = 0;
break;
default:
return -EINVAL;
}
dcfg = read_vp(par, VP_DCFG);
- dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN);
+ dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN |
+ VP_DCFG_CRT_EN);
if (!blank)
dcfg |= VP_DCFG_DAC_BL_EN;
if (hsync)
dcfg |= VP_DCFG_HSYNC_EN;
if (vsync)
dcfg |= VP_DCFG_VSYNC_EN;
+ if (crt)
+ dcfg |= VP_DCFG_CRT_EN;
write_vp(par, VP_DCFG, dcfg);
/* Power on/off flat panel */
diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c
index 0072d9e..b8d52a8 100644
--- a/drivers/video/geode/video_gx.c
+++ b/drivers/video/geode/video_gx.c
@@ -299,37 +299,39 @@ int gx_blank_display(struct fb_info *info, int blank_mode)
{
struct gxfb_par *par = info->par;
u32 dcfg, fp_pm;
- int blank, hsync, vsync;
+ int blank, hsync, vsync, crt;
/* CRT power saving modes. */
switch (blank_mode) {
case FB_BLANK_UNBLANK:
- blank = 0; hsync = 1; vsync = 1;
+ blank = 0; hsync = 1; vsync = 1; crt = 1;
break;
case FB_BLANK_NORMAL:
- blank = 1; hsync = 1; vsync = 1;
+ blank = 1; hsync = 1; vsync = 1; crt = 1;
break;
case FB_BLANK_VSYNC_SUSPEND:
- blank = 1; hsync = 1; vsync = 0;
+ blank = 1; hsync = 1; vsync = 0; crt = 1;
break;
case FB_BLANK_HSYNC_SUSPEND:
- blank = 1; hsync = 0; vsync = 1;
+ blank = 1; hsync = 0; vsync = 1; crt = 1;
break;
case FB_BLANK_POWERDOWN:
- blank = 1; hsync = 0; vsync = 0;
+ blank = 1; hsync = 0; vsync = 0; crt = 0;
break;
default:
return -EINVAL;
}
dcfg = read_vp(par, VP_DCFG);
- dcfg &= ~(VP_DCFG_DAC_BL_EN
- | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN);
+ dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN |
+ VP_DCFG_CRT_EN);
if (!blank)
dcfg |= VP_DCFG_DAC_BL_EN;
if (hsync)
dcfg |= VP_DCFG_HSYNC_EN;
if (vsync)
dcfg |= VP_DCFG_VSYNC_EN;
+ if (crt)
+ dcfg |= VP_DCFG_CRT_EN;
write_vp(par, VP_DCFG, dcfg);
/* Power on/off flat panel. */
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