diff options
Diffstat (limited to 'drivers/acpi/sleep/main.c')
| -rw-r--r-- | drivers/acpi/sleep/main.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c deleted file mode 100644 index 930427fc0c4..00000000000 --- a/drivers/acpi/sleep/main.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * sleep.c - ACPI sleep support. - * - * Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> - * Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com> - * Copyright (c) 2000-2003 Patrick Mochel - * Copyright (c) 2003 Open Source Development Lab - * - * This file is released under the GPLv2. - * - */ - -#include <linux/delay.h> -#include <linux/irq.h> -#include <linux/dmi.h> -#include <linux/device.h> -#include <linux/suspend.h> -#include <acpi/acpi_bus.h> -#include <acpi/acpi_drivers.h> -#include "sleep.h" - -u8 sleep_states[ACPI_S_STATE_COUNT]; - -static struct pm_ops acpi_pm_ops; - -extern void do_suspend_lowlevel(void); - -static u32 acpi_suspend_states[] = { - [PM_SUSPEND_ON] = ACPI_STATE_S0, - [PM_SUSPEND_STANDBY] = ACPI_STATE_S1, - [PM_SUSPEND_MEM] = ACPI_STATE_S3, - [PM_SUSPEND_DISK] = ACPI_STATE_S4, - [PM_SUSPEND_MAX] = ACPI_STATE_S5 -}; - -static int init_8259A_after_S1; - -/** - * acpi_pm_prepare - Do preliminary suspend work. - * @pm_state: suspend state we're entering. - * - * Make sure we support the state. If we do, and we need it, set the - * firmware waking vector and do arch-specific nastiness to get the - * wakeup code to the waking vector. - */ - -extern int acpi_sleep_prepare(u32 acpi_state); -extern void acpi_power_off(void); - -static int acpi_pm_prepare(suspend_state_t pm_state) -{ - u32 acpi_state = acpi_suspend_states[pm_state]; - - if (!sleep_states[acpi_state]) { - printk("acpi_pm_prepare does not support %d \n", pm_state); - return -EPERM; - } - return acpi_sleep_prepare(acpi_state); -} - -/** - * acpi_pm_enter - Actually enter a sleep state. - * @pm_state: State we're entering. - * - * Flush caches and go to sleep. For STR or STD, we have to call - * arch-specific assembly, which in turn call acpi_enter_sleep_state(). - * It's unfortunate, but it works. Please fix if you're feeling frisky. - */ - -static int acpi_pm_enter(suspend_state_t pm_state) -{ - acpi_status status = AE_OK; - unsigned long flags = 0; - u32 acpi_state = acpi_suspend_states[pm_state]; - - ACPI_FLUSH_CPU_CACHE(); - - /* Do arch specific saving of state. */ - if (pm_state > PM_SUSPEND_STANDBY) { - int error = acpi_save_state_mem(); - if (error) - return error; - } - - local_irq_save(flags); - acpi_enable_wakeup_device(acpi_state); - switch (pm_state) { - case PM_SUSPEND_STANDBY: - barrier(); - status = acpi_enter_sleep_state(acpi_state); - break; - - case PM_SUSPEND_MEM: - do_suspend_lowlevel(); - break; - - case PM_SUSPEND_DISK: - if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM) - status = acpi_enter_sleep_state(acpi_state); - break; - case PM_SUSPEND_MAX: - acpi_power_off(); - break; - - default: - return -EINVAL; - } - local_irq_restore(flags); - printk(KERN_DEBUG "Back to C!\n"); - - /* restore processor state - * We should only be here if we're coming back from STR or STD. - * And, in the case of the latter, the memory image should have already - * been loaded from disk. - */ - if (pm_state > PM_SUSPEND_STANDBY) - acpi_restore_state_mem(); - - return ACPI_SUCCESS(status) ? 0 : -EFAULT; -} - -/** - * acpi_pm_finish - Finish up suspend sequence. - * @pm_state: State we're coming out of. - * - * This is called after we wake back up (or if entering the sleep state - * failed). - */ - -static int acpi_pm_finish(suspend_state_t pm_state) -{ - u32 acpi_state = acpi_suspend_states[pm_state]; - - acpi_leave_sleep_state(acpi_state); - acpi_disable_wakeup_device(acpi_state); - - /* reset firmware waking vector */ - acpi_set_firmware_waking_vector((acpi_physical_address) 0); - - if (init_8259A_after_S1) { - printk("Broken toshiba laptop -> kicking interrupts\n"); - init_8259A(0); - } - return 0; -} - -int acpi_suspend(u32 acpi_state) -{ - suspend_state_t states[] = { - [1] = PM_SUSPEND_STANDBY, - [3] = PM_SUSPEND_MEM, - [4] = PM_SUSPEND_DISK, - [5] = PM_SUSPEND_MAX - }; - - if (acpi_state < 6 && states[acpi_state]) - return pm_suspend(states[acpi_state]); - return -EINVAL; -} - -static int acpi_pm_state_valid(suspend_state_t pm_state) -{ - u32 acpi_state = acpi_suspend_states[pm_state]; - - return sleep_states[acpi_state]; -} - -static struct pm_ops acpi_pm_ops = { - .valid = acpi_pm_state_valid, - .prepare = acpi_pm_prepare, - .enter = acpi_pm_enter, - .finish = acpi_pm_finish, -}; - -/* - * Toshiba fails to preserve interrupts over S1, reinitialization - * of 8259 is needed after S1 resume. - */ -static int __init init_ints_after_s1(struct dmi_system_id *d) -{ - printk(KERN_WARNING "%s with broken S1 detected.\n", d->ident); - init_8259A_after_S1 = 1; - return 0; -} - -static struct dmi_system_id __initdata acpisleep_dmi_table[] = { - { - .callback = init_ints_after_s1, - .ident = "Toshiba Satellite 4030cdt", - .matches = {DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),}, - }, - {}, -}; - -static int __init acpi_sleep_init(void) -{ - int i = 0; - - dmi_check_system(acpisleep_dmi_table); - - if (acpi_disabled) - return 0; - - printk(KERN_INFO PREFIX "(supports"); - for (i = 0; i < ACPI_S_STATE_COUNT; i++) { - acpi_status status; - u8 type_a, type_b; - status = acpi_get_sleep_type_data(i, &type_a, &type_b); - if (ACPI_SUCCESS(status)) { - sleep_states[i] = 1; - printk(" S%d", i); - } - if (i == ACPI_STATE_S4) { - if (sleep_states[i]) - acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM; - } - } - printk(")\n"); - - pm_set_ops(&acpi_pm_ops); - return 0; -} - -late_initcall(acpi_sleep_init); |