On 2013-11-20 16:19, Graeme Gregory wrote:
sleep.c is not needed by the arm port as it will most likely be covered by some other power management framework like PSCI in the future so remove it.
Signed-off-by: Graeme Gregory graeme.gregory@linaro.org
Yes, this code is x86 related. There are standard interfaces for ACIP sleep, but need ARM arch code to cover it.
Acked-by: Hanjun Guo hanjun.guo@linaro.org
drivers/acpi/plat/arm/Makefile | 1 - drivers/acpi/plat/arm/sleep.c | 126 ----------------------------------------- drivers/acpi/plat/arm/sleep.h | 17 ------ 3 files changed, 144 deletions(-) delete mode 100644 drivers/acpi/plat/arm/sleep.c delete mode 100644 drivers/acpi/plat/arm/sleep.h
diff --git a/drivers/acpi/plat/arm/Makefile b/drivers/acpi/plat/arm/Makefile index a1f056d..9d59aaf 100644 --- a/drivers/acpi/plat/arm/Makefile +++ b/drivers/acpi/plat/arm/Makefile @@ -1,3 +1,2 @@ obj-y += boot.o -obj-y += sleep.o diff --git a/drivers/acpi/plat/arm/sleep.c b/drivers/acpi/plat/arm/sleep.c deleted file mode 100644 index 9129c7e..0000000 --- a/drivers/acpi/plat/arm/sleep.c +++ /dev/null @@ -1,126 +0,0 @@ -/*
- sleep.c - x86-specific ACPI sleep support.
- Copyright (C) 2001-2003 Patrick Mochel
- Copyright (C) 2001-2003 Pavel Machek pavel@ucw.cz
- */
-int acpi_suspend_lowlevel(void) -{
- /* BOZO: dummy routine; see below for actual */
- return 0;
-}
-#ifdef CONFIG_X86 -/* BOZO: disable everything for now... */
-#include <linux/acpi.h> -#include <linux/bootmem.h> -#include <linux/memblock.h> -#include <linux/dmi.h> -#include <linux/cpumask.h> -#include <asm/segment.h> -#include <asm/desc.h> -#include <asm/pgtable.h> -#include <asm/cacheflush.h> -#include <asm/realmode.h>
-#include "../../realmode/rm/wakeup.h" -#include "sleep.h"
-unsigned long acpi_realmode_flags;
-#if defined(CONFIG_SMP) && defined(CONFIG_64BIT) -static char temp_stack[4096]; -#endif
-/**
- acpi_suspend_lowlevel - save kernel state
- Create an identity mapped page table and copy the wakeup routine to
- low memory.
- */
-int acpi_suspend_lowlevel(void) -{
- struct wakeup_header *header =
(struct wakeup_header *) __va(real_mode_header->wakeup_header);- if (header->signature != WAKEUP_HEADER_SIGNATURE) {
printk(KERN_ERR "wakeup header does not match\n");return -EINVAL;- }
- header->video_mode = saved_video_mode;
- header->pmode_behavior = 0;
-#ifndef CONFIG_64BIT
- store_gdt((struct desc_ptr *)&header->pmode_gdt);
- if (!rdmsr_safe(MSR_EFER,
&header->pmode_efer_low,&header->pmode_efer_high))header->pmode_behavior |= (1 << WAKEUP_BEHAVIOR_RESTORE_EFER);-#endif /* !CONFIG_64BIT */
- header->pmode_cr0 = read_cr0();
- if (__this_cpu_read(cpu_info.cpuid_level) >= 0) {
header->pmode_cr4 = read_cr4();header->pmode_behavior |= (1 << WAKEUP_BEHAVIOR_RESTORE_CR4);- }
- if (!rdmsr_safe(MSR_IA32_MISC_ENABLE,
&header->pmode_misc_en_low,&header->pmode_misc_en_high))header->pmode_behavior |=(1 << WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE);- header->realmode_flags = acpi_realmode_flags;
- header->real_magic = 0x12345678;
-#ifndef CONFIG_64BIT
- header->pmode_entry = (u32)&wakeup_pmode_return;
- header->pmode_cr3 = (u32)__pa(&initial_page_table);
- saved_magic = 0x12345678;
-#else /* CONFIG_64BIT */ -#ifdef CONFIG_SMP
- stack_start = (unsigned long)temp_stack + sizeof(temp_stack);
- early_gdt_descr.address =
(unsigned long)get_cpu_gdt_table(smp_processor_id());- initial_gs = per_cpu_offset(smp_processor_id());
-#endif
- initial_code = (unsigned long)wakeup_long64;
saved_magic = 0x123456789abcdef0L;-#endif /* CONFIG_64BIT */
- do_suspend_lowlevel();
- return 0;
-}
-static int __init acpi_sleep_setup(char *str) -{
- while ((str != NULL) && (*str != '\0')) {
if (strncmp(str, "s3_bios", 7) == 0)acpi_realmode_flags |= 1;if (strncmp(str, "s3_mode", 7) == 0)acpi_realmode_flags |= 2;if (strncmp(str, "s3_beep", 7) == 0)acpi_realmode_flags |= 4;-#ifdef CONFIG_HIBERNATION
if (strncmp(str, "s4_nohwsig", 10) == 0)acpi_no_s4_hw_signature();-#endif
if (strncmp(str, "nonvs", 5) == 0)acpi_nvs_nosave();if (strncmp(str, "nonvs_s3", 8) == 0)acpi_nvs_nosave_s3();if (strncmp(str, "old_ordering", 12) == 0)acpi_old_suspend_ordering();str = strchr(str, ',');if (str != NULL)str += strspn(str, ", \t");- }
- return 1;
-}
-__setup("acpi_sleep=", acpi_sleep_setup);
-#endif diff --git a/drivers/acpi/plat/arm/sleep.h b/drivers/acpi/plat/arm/sleep.h deleted file mode 100644 index 67f59f8..0000000 --- a/drivers/acpi/plat/arm/sleep.h +++ /dev/null @@ -1,17 +0,0 @@ -/*
- Variables and functions used by the code in sleep.c
- */
-#include <asm/realmode.h>
-extern unsigned long saved_video_mode; -extern long saved_magic;
-extern int wakeup_pmode_return;
-extern u8 wake_sleep_flags;
-extern unsigned long acpi_copy_wakeup_routine(unsigned long); -extern void wakeup_long64(void);
-extern void do_suspend_lowlevel(void);