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/init.h> 10 #include <linux/suspend.h> 11 #include <linux/errno.h> 12 #include <linux/time.h> 13 #include <asm/io.h> 14 #include <asm/hd64461.h> 15 #include <mach/hp6xx.h> 16 #include <cpu/dac.h> 17 #include <asm/pm.h> 18 19 #define STBCR 0xffffff82 20 #define STBCR2 0xffffff88 21 22 static int hp6x0_pm_enter(suspend_state_t state) 23 { 24 u8 stbcr, stbcr2; 25 #ifdef CONFIG_HD64461_ENABLER 26 u8 scr; 27 u16 hd64461_stbcr; 28 #endif 29 30 #ifdef CONFIG_HD64461_ENABLER 31 outb(0, HD64461_PCC1CSCIER); 32 33 scr = inb(HD64461_PCC1SCR); 34 scr |= HD64461_PCCSCR_VCC1; 35 outb(scr, HD64461_PCC1SCR); 36 37 hd64461_stbcr = inw(HD64461_STBCR); 38 hd64461_stbcr |= HD64461_STBCR_SPC1ST; 39 outw(hd64461_stbcr, HD64461_STBCR); 40 #endif 41 42 ctrl_outb(0x1f, DACR); 43 44 stbcr = ctrl_inb(STBCR); 45 ctrl_outb(0x01, STBCR); 46 47 stbcr2 = ctrl_inb(STBCR2); 48 ctrl_outb(0x7f , STBCR2); 49 50 outw(0xf07f, HD64461_SCPUCR); 51 52 pm_enter(); 53 54 outw(0, HD64461_SCPUCR); 55 ctrl_outb(stbcr, STBCR); 56 ctrl_outb(stbcr2, STBCR2); 57 58 #ifdef CONFIG_HD64461_ENABLER 59 hd64461_stbcr = inw(HD64461_STBCR); 60 hd64461_stbcr &= ~HD64461_STBCR_SPC1ST; 61 outw(hd64461_stbcr, HD64461_STBCR); 62 63 outb(0x4c, HD64461_PCC1CSCIER); 64 outb(0x00, HD64461_PCC1CSCR); 65 #endif 66 67 return 0; 68 } 69 70 static struct platform_suspend_ops hp6x0_pm_ops = { 71 .enter = hp6x0_pm_enter, 72 .valid = suspend_valid_only_mem, 73 }; 74 75 static int __init hp6x0_pm_init(void) 76 { 77 suspend_set_ops(&hp6x0_pm_ops); 78 return 0; 79 } 80 81 late_initcall(hp6x0_pm_init); 82