88 lines
1.7 KiB
C
88 lines
1.7 KiB
C
/*
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* hp6x0 Power Management Routines
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*
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* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License.
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*/
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#include <linux/init.h>
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#include <linux/suspend.h>
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#include <linux/errno.h>
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#include <linux/time.h>
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#include <asm/io.h>
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#include <asm/hd64461.h>
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#include <asm/hp6xx.h>
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#include <asm/cpu/dac.h>
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#include <asm/pm.h>
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#define STBCR 0xffffff82
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#define STBCR2 0xffffff88
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static int hp6x0_pm_enter(suspend_state_t state)
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{
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u8 stbcr, stbcr2;
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#ifdef CONFIG_HD64461_ENABLER
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u8 scr;
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u16 hd64461_stbcr;
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#endif
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if (state != PM_SUSPEND_MEM)
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return -EINVAL;
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#ifdef CONFIG_HD64461_ENABLER
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outb(0, HD64461_PCC1CSCIER);
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scr = inb(HD64461_PCC1SCR);
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scr |= HD64461_PCCSCR_VCC1;
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outb(scr, HD64461_PCC1SCR);
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hd64461_stbcr = inw(HD64461_STBCR);
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hd64461_stbcr |= HD64461_STBCR_SPC1ST;
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outw(hd64461_stbcr, HD64461_STBCR);
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#endif
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ctrl_outb(0x1f, DACR);
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stbcr = ctrl_inb(STBCR);
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ctrl_outb(0x01, STBCR);
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stbcr2 = ctrl_inb(STBCR2);
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ctrl_outb(0x7f , STBCR2);
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outw(0xf07f, HD64461_SCPUCR);
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pm_enter();
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outw(0, HD64461_SCPUCR);
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ctrl_outb(stbcr, STBCR);
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ctrl_outb(stbcr2, STBCR2);
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#ifdef CONFIG_HD64461_ENABLER
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hd64461_stbcr = inw(HD64461_STBCR);
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hd64461_stbcr &= ~HD64461_STBCR_SPC1ST;
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outw(hd64461_stbcr, HD64461_STBCR);
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outb(0x4c, HD64461_PCC1CSCIER);
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outb(0x00, HD64461_PCC1CSCR);
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#endif
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return 0;
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}
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/*
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* Set to PM_DISK_FIRMWARE so we can quickly veto suspend-to-disk.
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*/
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static struct pm_ops hp6x0_pm_ops = {
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.pm_disk_mode = PM_DISK_FIRMWARE,
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.enter = hp6x0_pm_enter,
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};
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static int __init hp6x0_pm_init(void)
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{
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pm_set_ops(&hp6x0_pm_ops);
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return 0;
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}
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late_initcall(hp6x0_pm_init);
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