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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 01:40:39 +0400 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 01:40:39 +0400 |
commit | ebdea46fecae40c4d7effcd33f40918a37a1df4b (patch) | |
tree | e4312bf7f1f3d184738963a0ec300aa9fdfd55c1 /arch/arm/mach-s3c2410/s3c2410-sleep.S | |
parent | fecf3404f4aba6d0edeba31eeb018cbb6326dff2 (diff) | |
parent | 250d375d1da45a5e08ab8baf5eaa7eb258afd82b (diff) | |
download | linux-ebdea46fecae40c4d7effcd33f40918a37a1df4b.tar.xz |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits)
[ARM] 3856/1: Add clocksource for Intel IXP4xx platforms
[ARM] 3855/1: Add generic time support
[ARM] 3873/1: S3C24XX: Add irq_chip names
[ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips
[ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23
[ARM] nommu: confirms the CR_V bit in nommu mode
[ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores.
[ARM] 3870/1: AT91: Start removing static memory mappings
[ARM] 3869/1: AT91: NAND support for DK and KB9202 boards
[ARM] 3868/1: AT91 hardware header update
[ARM] 3867/1: AT91 GPIO update
[ARM] 3866/1: AT91 clock update
[ARM] 3865/1: AT91RM9200 header updates
[ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series
[ARM] kthread: switch arch/arm/kernel/apm.c
[ARM] Off-by-one in arch/arm/common/icst*
[ARM] 3864/1: Refactore sharpsl_pm
[ARM] 3863/1: Add Locomo SPI Device
[ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs
[ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h
...
Diffstat (limited to 'arch/arm/mach-s3c2410/s3c2410-sleep.S')
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2410-sleep.S | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/s3c2410-sleep.S b/arch/arm/mach-s3c2410/s3c2410-sleep.S new file mode 100644 index 000000000000..9179a1024588 --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2410-sleep.S @@ -0,0 +1,68 @@ +/* linux/arch/arm/mach-s3c2410/s3c2410-sleep.S + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 Power Manager (Suspend-To-RAM) support + * + * Based on PXA/SA1100 sleep code by: + * Nicolas Pitre, (c) 2002 Monta Vista Software Inc + * Cliff Brake, (c) 2001 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <asm/hardware.h> +#include <asm/arch/map.h> + +#include <asm/arch/regs-gpio.h> +#include <asm/arch/regs-clock.h> +#include <asm/arch/regs-mem.h> +#include <asm/arch/regs-serial.h> + + /* s3c2410_cpu_suspend + * + * put the cpu into sleep mode + */ + +ENTRY(s3c2410_cpu_suspend) + @@ prepare cpu to sleep + + ldr r4, =S3C2410_REFRESH + ldr r5, =S3C24XX_MISCCR + ldr r6, =S3C2410_CLKCON + ldr r7, [ r4 ] @ get REFRESH (and ensure in TLB) + ldr r8, [ r5 ] @ get MISCCR (and ensure in TLB) + ldr r9, [ r6 ] @ get CLKCON (and ensure in TLB) + + orr r7, r7, #S3C2410_REFRESH_SELF @ SDRAM sleep command + orr r8, r8, #S3C2410_MISCCR_SDSLEEP @ SDRAM power-down signals + orr r9, r9, #S3C2410_CLKCON_POWER @ power down command + + teq pc, #0 @ first as a trial-run to load cache + bl s3c2410_do_sleep + teq r0, r0 @ now do it for real + b s3c2410_do_sleep @ + + @@ align next bit of code to cache line + .align 8 +s3c2410_do_sleep: + streq r7, [ r4 ] @ SDRAM sleep command + streq r8, [ r5 ] @ SDRAM power-down config + streq r9, [ r6 ] @ CPU sleep +1: beq 1b + mov pc, r14 |