diff options
Diffstat (limited to 'arch/sh/boards/hp6xx/pm.c')
| -rw-r--r-- | arch/sh/boards/hp6xx/pm.c | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/arch/sh/boards/hp6xx/pm.c b/arch/sh/boards/hp6xx/pm.c index d22f6eac9ccabb..6a2112aeb7c041 100644 --- a/arch/sh/boards/hp6xx/pm.c +++ b/arch/sh/boards/hp6xx/pm.c @@ -10,14 +10,25 @@ #include <linux/suspend.h> #include <linux/errno.h> #include <linux/time.h> +#include <linux/apm-emulation.h> #include <asm/io.h> #include <asm/hd64461.h> #include <asm/hp6xx.h> #include <asm/cpu/dac.h> #include <asm/pm.h> -#define STBCR 0xffffff82 -#define STBCR2 0xffffff88 +#define STBCR 0xffffff82 /* STBCR (Standby control register) SH7709A */ +#define STBCR2 0xffffff88 /* STBCR2 (Standby control register 2) SH7709A */ +/* 1 = true, 0 = false + bit 0 - Clock supply to SCI1 (IRDA) halted + bit 1 - Clock supply to SCI2 (SCIF) halted + bit 2 - Clock supply to ADC halted and all registers initialized + bit 3 - Clock supply to DAC halted + bit 4 - Clock supply to DMAC halted + bit 5 - Clock supply to UBC is halted + bit 6 - Pins MD5 to MD0 are changed in standby mode + bit 7 - Reserved +*/ static int hp6x0_pm_enter(suspend_state_t state) { @@ -28,38 +39,48 @@ static int hp6x0_pm_enter(suspend_state_t state) #endif #ifdef CONFIG_HD64461_ENABLER + /* disable all CF interrupts */ outb(0, HD64461_PCC1CSCIER); - scr = inb(HD64461_PCC1SCR); scr |= HD64461_PCCSCR_VCC1; outb(scr, HD64461_PCC1SCR); + /* get standby status of all devices */ hd64461_stbcr = inw(HD64461_STBCR); + /* add standby mode to CF slot */ hd64461_stbcr |= HD64461_STBCR_SPC1ST; outw(hd64461_stbcr, HD64461_STBCR); #endif - ctrl_outb(0x1f, DACR); + /* chan 0/1 D/A conversion and DA 0/1 output are enabled */ + outb(0x1f, DACR); - stbcr = ctrl_inb(STBCR); - ctrl_outb(0x01, STBCR); + /* halt clocksupply to SCI */ + stbcr = inb(STBCR); + outb(0x01, STBCR); - stbcr2 = ctrl_inb(STBCR2); - ctrl_outb(0x7f , STBCR2); + /* state and drop all clocksupply */ + stbcr2 = inb(STBCR2); + outb(0x7f , STBCR2); + /* allow IO Ports D + C, disallow A + B */ outw(0xf07f, HD64461_SCPUCR); + /* Zzzzz */ pm_enter(); + /* wakeup, Lets restore the old values */ outw(0, HD64461_SCPUCR); - ctrl_outb(stbcr, STBCR); - ctrl_outb(stbcr2, STBCR2); + outb(stbcr, STBCR); + outb(stbcr2, STBCR2); #ifdef CONFIG_HD64461_ENABLER + /* get standby status of all devices */ hd64461_stbcr = inw(HD64461_STBCR); + /* remove standby mode for CF slot */ hd64461_stbcr &= ~HD64461_STBCR_SPC1ST; outw(hd64461_stbcr, HD64461_STBCR); - + /* turn on CF interrupt again */ outb(0x4c, HD64461_PCC1CSCIER); outb(0x00, HD64461_PCC1CSCR); #endif |