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/*
* hp6x0 Power Management Routines
*
* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License.
*/
#include <linux/init.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/time.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
static int hp6x0_pm_enter(suspend_state_t state)
{
u8 stbcr, stbcr2;
#ifdef CONFIG_HD64461_ENABLER
u8 scr;
u16 hd64461_stbcr;
#endif
if (state != PM_SUSPEND_MEM)
return -EINVAL;
#ifdef CONFIG_HD64461_ENABLER
outb(0, HD64461_PCC1CSCIER);
scr = inb(HD64461_PCC1SCR);
scr |= HD64461_PCCSCR_VCC1;
outb(scr, HD64461_PCC1SCR);
hd64461_stbcr = inw(HD64461_STBCR);
hd64461_stbcr |= HD64461_STBCR_SPC1ST;
outw(hd64461_stbcr, HD64461_STBCR);
#endif
ctrl_outb(0x1f, DACR);
stbcr = ctrl_inb(STBCR);
ctrl_outb(0x01, STBCR);
stbcr2 = ctrl_inb(STBCR2);
ctrl_outb(0x7f , STBCR2);
outw(0xf07f, HD64461_SCPUCR);
pm_enter();
outw(0, HD64461_SCPUCR);
ctrl_outb(stbcr, STBCR);
ctrl_outb(stbcr2, STBCR2);
#ifdef CONFIG_HD64461_ENABLER
hd64461_stbcr = inw(HD64461_STBCR);
hd64461_stbcr &= ~HD64461_STBCR_SPC1ST;
outw(hd64461_stbcr, HD64461_STBCR);
outb(0x4c, HD64461_PCC1CSCIER);
outb(0x00, HD64461_PCC1CSCR);
#endif
return 0;
}
/*
* Set to PM_DISK_FIRMWARE so we can quickly veto suspend-to-disk.
*/
static struct pm_ops hp6x0_pm_ops = {
.pm_disk_mode = PM_DISK_FIRMWARE,
.enter = hp6x0_pm_enter,
};
static int __init hp6x0_pm_init(void)
{
pm_set_ops(&hp6x0_pm_ops);
return 0;
}
late_initcall(hp6x0_pm_init);
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