/*
* 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
*
#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>
static struct pm_ops acpi_pm_ops;
-extern void do_suspend_lowlevel_s4bios(void);
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_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.
- * @state: suspend state we're entering.
+ * @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.
*/
-static int acpi_pm_prepare(u32 state)
+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[state];
+ u32 acpi_state = acpi_suspend_states[pm_state];
- if (!sleep_states[acpi_state])
+ if (!sleep_states[acpi_state]) {
+ printk("acpi_pm_prepare does not support %d \n", pm_state);
return -EPERM;
-
- /* do we have a wakeup address for S2 and S3? */
- /* Here, we support only S4BIOS, those we set the wakeup address */
- /* S4OS is only supported for now via swsusp.. */
- if (state == PM_SUSPEND_MEM || state == PM_SUSPEND_DISK) {
- if (!acpi_wakeup_address)
- return -EFAULT;
- acpi_set_firmware_waking_vector(
- (acpi_physical_address) acpi_wakeup_address);
}
- ACPI_FLUSH_CPU_CACHE();
- acpi_enter_sleep_state_prep(acpi_state);
- return 0;
+ return acpi_sleep_prepare(acpi_state);
}
-
/**
* acpi_pm_enter - Actually enter a sleep state.
- * @state: State we're entering.
+ * @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(u32 state)
+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[state];
+ u32 acpi_state = acpi_suspend_states[pm_state];
ACPI_FLUSH_CPU_CACHE();
/* Do arch specific saving of state. */
- if (state > PM_SUSPEND_STANDBY) {
+ if (pm_state > PM_SUSPEND_STANDBY) {
int error = acpi_save_state_mem();
if (error)
return error;
}
-
local_irq_save(flags);
- switch (state)
- {
+ acpi_enable_wakeup_device(acpi_state);
+ switch (pm_state) {
case PM_SUSPEND_STANDBY:
barrier();
status = acpi_enter_sleep_state(acpi_state);
case PM_SUSPEND_DISK:
if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM)
status = acpi_enter_sleep_state(acpi_state);
- else
- do_suspend_lowlevel_s4bios();
break;
+ case PM_SUSPEND_MAX:
+ acpi_power_off();
+ break;
+
default:
return -EINVAL;
}
+
+ /* ACPI 3.0 specs (P62) says that it's the responsabilty
+ * of the OSPM to clear the status bit [ implying that the
+ * POWER_BUTTON event should not reach userspace ]
+ */
+ if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3))
+ acpi_clear_event(ACPI_EVENT_POWER_BUTTON);
+
local_irq_restore(flags);
printk(KERN_DEBUG "Back to C!\n");
* And, in the case of the latter, the memory image should have already
* been loaded from disk.
*/
- if (state > PM_SUSPEND_STANDBY)
+ if (pm_state > PM_SUSPEND_STANDBY)
acpi_restore_state_mem();
-
return ACPI_SUCCESS(status) ? 0 : -EFAULT;
}
-
/**
* acpi_pm_finish - Finish up suspend sequence.
- * @state: State we're coming out of.
+ * @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(u32 state)
+static int acpi_pm_finish(suspend_state_t pm_state)
{
- acpi_leave_sleep_state(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 (dmi_broken & BROKEN_INIT_AFTER_S1) {
+ if (init_8259A_after_S1) {
printk("Broken toshiba laptop -> kicking interrupts\n");
init_8259A(0);
}
return 0;
}
-
int acpi_suspend(u32 acpi_state)
{
- u32 states[] = {
- [1] = PM_SUSPEND_STANDBY,
- [3] = PM_SUSPEND_MEM,
- [4] = PM_SUSPEND_DISK,
+ suspend_state_t states[] = {
+ [1] = PM_SUSPEND_STANDBY,
+ [3] = PM_SUSPEND_MEM,
+ [4] = PM_SUSPEND_DISK,
+ [5] = PM_SUSPEND_MAX
};
- if (acpi_state <= 4 && states[acpi_state])
+ 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 = {
- .prepare = acpi_pm_prepare,
- .enter = acpi_pm_enter,
- .finish = acpi_pm_finish,
+ .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;
+ 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++) {
+ 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);
printk(" S%d", i);
}
if (i == ACPI_STATE_S4) {
- if (acpi_gbl_FACS->S4bios_f) {
- sleep_states[i] = 1;
- printk(" S4bios");
- acpi_pm_ops.pm_disk_mode = PM_DISK_FIRMWARE;
- } else if (sleep_states[i])
+ if (sleep_states[i])
acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM;
}
}
git://git.onelab.eu / linux-2.6.git / blobdiff