diff options
Diffstat (limited to 'drivers/video/cyber2000fb.c')
| -rw-r--r-- | drivers/video/cyber2000fb.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/drivers/video/cyber2000fb.c b/drivers/video/cyber2000fb.c index 52228d56b..55fb8728b 100644 --- a/drivers/video/cyber2000fb.c +++ b/drivers/video/cyber2000fb.c @@ -1042,20 +1042,50 @@ static void cyber2000fb_blank(int blank, struct fb_info *info) struct cfb_info *cfb = (struct cfb_info *)info; int i; - if (blank) { - for (i = 0; i < NR_PALETTE; i++) { + /* + * Blank the screen if blank_mode != 0, else unblank. If + * blank == NULL then the caller blanks by setting the CLUT + * (Color Look Up Table) to all black. Return 0 if blanking + * succeeded, != 0 if un-/blanking failed due to e.g. a + * video mode which doesn't support it. Implements VESA + * suspend and powerdown modes on hardware that supports + * disabling hsync/vsync: + * blank_mode == 2: suspend vsync + * blank_mode == 3: suspend hsync + * blank_mode == 4: powerdown + * + * wms...Enable VESA DMPS compatible powerdown mode + * run "setterm -powersave powerdown" to take advantage + */ + + switch (blank) { + case 4: /* powerdown - both sync lines down */ + cyber2000_grphw(0x16, 0x05); + break; + case 3: /* hsync off */ + cyber2000_grphw(0x16, 0x01); + break; + case 2: /* vsync off */ + cyber2000_grphw(0x16, 0x04); + break; + case 1: /* just software blanking of screen */ + cyber2000_grphw(0x16, 0x00); + for (i = 0; i < 256; i++) { cyber2000_outb(i, 0x3c8); cyber2000_outb(0, 0x3c9); cyber2000_outb(0, 0x3c9); cyber2000_outb(0, 0x3c9); } - } else { - for (i = 0; i < NR_PALETTE; i++) { + break; + default: /* case 0, or anything else: unblank */ + cyber2000_grphw(0x16, 0x00); + for (i = 0; i < 256; i++) { cyber2000_outb(i, 0x3c8); cyber2000_outb(cfb->palette[i].red, 0x3c9); cyber2000_outb(cfb->palette[i].green, 0x3c9); cyber2000_outb(cfb->palette[i].blue, 0x3c9); } + break; } } @@ -1196,6 +1226,7 @@ int __init cyber2000fb_setup(char *options) static char igs_regs[] __devinitdata = { 0x12, 0x00, 0x13, 0x00, + 0x16, 0x00, 0x31, 0x00, 0x32, 0x00, 0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00, 0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x01, |