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sh: move the hp6xx pm code

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Move the not-so-generic pm code from arch/sh/kernel/pm.c to the
platform directory together with the rest of the hp6xx pm code.

This is done to let non-hp6xx platforms enable CONFIG_PM.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2008-12-04 22:45:03 +09:00 committed by Paul Mundt
parent 04645185d0
commit 3e51762759
5 changed files with 77 additions and 108 deletions
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78
arch/sh/boards/mach-hp6xx/pm.c
View file

@ -10,15 +10,91 @@
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/delay.h>
#include <linux/gfp.h>
#include <asm/io.h>
#include <asm/hd64461.h>
#include <mach/hp6xx.h>
#include <cpu/dac.h>
#include <asm/pm.h>
#include <asm/freq.h>
#include <asm/watchdog.h>
#define INTR_OFFSET 0x600
#define STBCR 0xffffff82
#define STBCR2 0xffffff88
#define STBCR_STBY 0x80
#define STBCR_MSTP2 0x04
#define MCR 0xffffff68
#define RTCNT 0xffffff70
#define MCR_RMODE 2
#define MCR_RFSH 4
extern u8 wakeup_start;
extern u8 wakeup_end;
static void pm_enter(void)
{
u8 stbcr, csr;
u16 frqcr, mcr;
u32 vbr_new, vbr_old;
set_bl_bit();
/* set wdt */
csr = sh_wdt_read_csr();
csr &= ~WTCSR_TME;
csr |= WTCSR_CKS_4096;
sh_wdt_write_csr(csr);
csr = sh_wdt_read_csr();
sh_wdt_write_cnt(0);
/* disable PLL1 */
frqcr = ctrl_inw(FRQCR);
frqcr &= ~(FRQCR_PLLEN | FRQCR_PSTBY);
ctrl_outw(frqcr, FRQCR);
/* enable standby */
stbcr = ctrl_inb(STBCR);
ctrl_outb(stbcr | STBCR_STBY | STBCR_MSTP2, STBCR);
/* set self-refresh */
mcr = ctrl_inw(MCR);
ctrl_outw(mcr & ~MCR_RFSH, MCR);
/* set interrupt handler */
asm volatile("stc vbr, %0" : "=r" (vbr_old));
vbr_new = get_zeroed_page(GFP_ATOMIC);
udelay(50);
memcpy((void*)(vbr_new + INTR_OFFSET),
&wakeup_start, &wakeup_end - &wakeup_start);
asm volatile("ldc %0, vbr" : : "r" (vbr_new));
ctrl_outw(0, RTCNT);
ctrl_outw(mcr | MCR_RFSH | MCR_RMODE, MCR);
cpu_sleep();
asm volatile("ldc %0, vbr" : : "r" (vbr_old));
free_page(vbr_new);
/* enable PLL1 */
frqcr = ctrl_inw(FRQCR);
frqcr |= FRQCR_PSTBY;
ctrl_outw(frqcr, FRQCR);
udelay(50);
frqcr |= FRQCR_PLLEN;
ctrl_outw(frqcr, FRQCR);
ctrl_outb(stbcr, STBCR);
clear_bl_bit();
}
static int hp6x0_pm_enter(suspend_state_t state)
{
u8 stbcr, stbcr2;

17
arch/sh/include/asm/pm.h
View file

@ -1,17 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright 2006 (c) Andriy Skulysh <askulysh@gmail.com>
*
*/
#ifndef __ASM_SH_PM_H
#define __ASM_SH_PM_H
extern u8 wakeup_start;
extern u8 wakeup_end;
void pm_enter(void);
#endif

1
arch/sh/kernel/Makefile_32
View file

@ -25,7 +25,6 @@ obj-$(CONFIG_MODULES) += sh_ksyms_32.o module.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_IO_TRAPPED) += io_trapped.o
obj-$(CONFIG_KPROBES) += kprobes.o

1
arch/sh/kernel/Makefile_64
View file

@ -15,7 +15,6 @@ obj-$(CONFIG_MODULES) += sh_ksyms_64.o module.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_IO_TRAPPED) += io_trapped.o
obj-$(CONFIG_GENERIC_GPIO) += gpio.o

88
arch/sh/kernel/pm.c
View file

@ -1,88 +0,0 @@
/*
* Generic Power Management Routine
*
* 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/suspend.h>
#include <linux/delay.h>
#include <linux/gfp.h>
#include <asm/freq.h>
#include <asm/io.h>
#include <asm/watchdog.h>
#include <asm/pm.h>
#define INTR_OFFSET 0x600
#define STBCR 0xffffff82
#define STBCR2 0xffffff88
#define STBCR_STBY 0x80
#define STBCR_MSTP2 0x04
#define MCR 0xffffff68
#define RTCNT 0xffffff70
#define MCR_RMODE 2
#define MCR_RFSH 4
void pm_enter(void)
{
u8 stbcr, csr;
u16 frqcr, mcr;
u32 vbr_new, vbr_old;
set_bl_bit();
/* set wdt */
csr = sh_wdt_read_csr();
csr &= ~WTCSR_TME;
csr |= WTCSR_CKS_4096;
sh_wdt_write_csr(csr);
csr = sh_wdt_read_csr();
sh_wdt_write_cnt(0);
/* disable PLL1 */
frqcr = ctrl_inw(FRQCR);
frqcr &= ~(FRQCR_PLLEN | FRQCR_PSTBY);
ctrl_outw(frqcr, FRQCR);
/* enable standby */
stbcr = ctrl_inb(STBCR);
ctrl_outb(stbcr | STBCR_STBY | STBCR_MSTP2, STBCR);
/* set self-refresh */
mcr = ctrl_inw(MCR);
ctrl_outw(mcr & ~MCR_RFSH, MCR);
/* set interrupt handler */
asm volatile("stc vbr, %0" : "=r" (vbr_old));
vbr_new = get_zeroed_page(GFP_ATOMIC);
udelay(50);
memcpy((void*)(vbr_new + INTR_OFFSET),
&wakeup_start, &wakeup_end - &wakeup_start);
asm volatile("ldc %0, vbr" : : "r" (vbr_new));
ctrl_outw(0, RTCNT);
ctrl_outw(mcr | MCR_RFSH | MCR_RMODE, MCR);
cpu_sleep();
asm volatile("ldc %0, vbr" : : "r" (vbr_old));
free_page(vbr_new);
/* enable PLL1 */
frqcr = ctrl_inw(FRQCR);
frqcr |= FRQCR_PSTBY;
ctrl_outw(frqcr, FRQCR);
udelay(50);
frqcr |= FRQCR_PLLEN;
ctrl_outw(frqcr, FRQCR);
ctrl_outb(stbcr, STBCR);
clear_bl_bit();
}