From 4537f93ae88c77a26e77d192ca32a0c2cd359592 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Mon, 28 Apr 2008 02:15:29 -0700 Subject: [PATCH] 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 Cc: Jordan Crouse Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/geode/lxfb_ops.c | 17 ++++++++++------- drivers/video/geode/video_gx.c | 18 ++++++++++-------- 2 files changed, 20 insertions(+), 15 deletions(-) diff --git a/drivers/video/geode/lxfb_ops.c b/drivers/video/geode/lxfb_ops.c index 7abc439101c..531fcdcdd75 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 0072d9ec2e2..b8d52a8360d 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. */ -- 2.41.1