| Andriy Skulysh | 3aa770e | 2006-09-27 16:20:22 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * hp6x0 Power Management Routines |
| 3 | * |
| 4 | * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License. |
| 8 | */ |
| 9 | #include <linux/config.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/suspend.h> |
| 12 | #include <linux/errno.h> |
| 13 | #include <linux/time.h> |
| 14 | #include <asm/io.h> |
| 15 | #include <asm/hd64461.h> |
| 16 | #include <asm/hp6xx/hp6xx.h> |
| 17 | #include <asm/cpu/dac.h> |
| 18 | #include <asm/pm.h> |
| 19 | |
| 20 | #define STBCR 0xffffff82 |
| 21 | #define STBCR2 0xffffff88 |
| 22 | |
| 23 | static int hp6x0_pm_enter(suspend_state_t state) |
| 24 | { |
| 25 | u8 stbcr, stbcr2; |
| 26 | #ifdef CONFIG_HD64461_ENABLER |
| 27 | u8 scr; |
| 28 | u16 hd64461_stbcr; |
| 29 | #endif |
| 30 | |
| 31 | if (state != PM_SUSPEND_MEM) |
| 32 | return -EINVAL; |
| 33 | |
| 34 | #ifdef CONFIG_HD64461_ENABLER |
| 35 | outb(0, HD64461_PCC1CSCIER); |
| 36 | |
| 37 | scr = inb(HD64461_PCC1SCR); |
| 38 | scr |= HD64461_PCCSCR_VCC1; |
| 39 | outb(scr, HD64461_PCC1SCR); |
| 40 | |
| 41 | hd64461_stbcr = inw(HD64461_STBCR); |
| 42 | hd64461_stbcr |= HD64461_STBCR_SPC1ST; |
| 43 | outw(hd64461_stbcr, HD64461_STBCR); |
| 44 | #endif |
| 45 | |
| 46 | ctrl_outb(0x1f, DACR); |
| 47 | |
| 48 | stbcr = ctrl_inb(STBCR); |
| 49 | ctrl_outb(0x01, STBCR); |
| 50 | |
| 51 | stbcr2 = ctrl_inb(STBCR2); |
| 52 | ctrl_outb(0x7f , STBCR2); |
| 53 | |
| 54 | outw(0xf07f, HD64461_SCPUCR); |
| 55 | |
| 56 | pm_enter(); |
| 57 | |
| 58 | outw(0, HD64461_SCPUCR); |
| 59 | ctrl_outb(stbcr, STBCR); |
| 60 | ctrl_outb(stbcr2, STBCR2); |
| 61 | |
| 62 | #ifdef CONFIG_HD64461_ENABLER |
| 63 | hd64461_stbcr = inw(HD64461_STBCR); |
| 64 | hd64461_stbcr &= ~HD64461_STBCR_SPC1ST; |
| 65 | outw(hd64461_stbcr, HD64461_STBCR); |
| 66 | |
| 67 | outb(0x4c, HD64461_PCC1CSCIER); |
| 68 | outb(0x00, HD64461_PCC1CSCR); |
| 69 | #endif |
| 70 | |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | /* |
| 75 | * Set to PM_DISK_FIRMWARE so we can quickly veto suspend-to-disk. |
| 76 | */ |
| 77 | static struct pm_ops hp6x0_pm_ops = { |
| 78 | .pm_disk_mode = PM_DISK_FIRMWARE, |
| 79 | .enter = hp6x0_pm_enter, |
| 80 | }; |
| 81 | |
| 82 | static int __init hp6x0_pm_init(void) |
| 83 | { |
| 84 | pm_set_ops(&hp6x0_pm_ops); |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | late_initcall(hp6x0_pm_init); |