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authorLen Brown <len.brown@intel.com>2010-08-14 23:55:44 -0400
committerLen Brown <len.brown@intel.com>2010-08-14 23:55:44 -0400
commitf2a66185bed21427d8d347a42eaf0ad1d3d9fc63 (patch)
treede49c1ea5b87273596725d9bb1b0188ae2bbf3c9
parent9fe6206f400646a2322096b56c59891d530e8d51 (diff)
parent618d7fd0d4e51a45d25d9bc6097a0cb1e5a2f226 (diff)
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Merge branch 'nvs' into release
-rw-r--r--drivers/acpi/sleep.c60
-rw-r--r--drivers/acpi/sleep.h5
-rw-r--r--drivers/acpi/wakeup.c48
3 files changed, 33 insertions, 80 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 2862c781b37..e4625f91981 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -70,10 +70,10 @@ static int acpi_sleep_prepare(u32 acpi_state)
}
ACPI_FLUSH_CPU_CACHE();
- acpi_enable_wakeup_device_prep(acpi_state);
#endif
printk(KERN_INFO PREFIX "Preparing to enter system sleep state S%d\n",
acpi_state);
+ acpi_enable_wakeup_devices(acpi_state);
acpi_enter_sleep_state_prep(acpi_state);
return 0;
}
@@ -119,6 +119,16 @@ static int acpi_pm_freeze(void)
}
/**
+ * acpi_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS.
+ */
+static int acpi_pm_pre_suspend(void)
+{
+ acpi_pm_freeze();
+ suspend_nvs_save();
+ return 0;
+}
+
+/**
* __acpi_pm_prepare - Prepare the platform to enter the target state.
*
* If necessary, set the firmware waking vector and do arch-specific
@@ -127,11 +137,9 @@ static int acpi_pm_freeze(void)
static int __acpi_pm_prepare(void)
{
int error = acpi_sleep_prepare(acpi_target_sleep_state);
-
- suspend_nvs_save();
-
if (error)
acpi_target_sleep_state = ACPI_STATE_S0;
+
return error;
}
@@ -142,9 +150,8 @@ static int __acpi_pm_prepare(void)
static int acpi_pm_prepare(void)
{
int error = __acpi_pm_prepare();
-
if (!error)
- acpi_pm_freeze();
+ acpi_pm_pre_suspend();
return error;
}
@@ -159,7 +166,6 @@ static void acpi_pm_finish(void)
{
u32 acpi_state = acpi_target_sleep_state;
- suspend_nvs_free();
acpi_ec_unblock_transactions();
if (acpi_state == ACPI_STATE_S0)
@@ -167,7 +173,7 @@ static void acpi_pm_finish(void)
printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n",
acpi_state);
- acpi_disable_wakeup_device(acpi_state);
+ acpi_disable_wakeup_devices(acpi_state);
acpi_leave_sleep_state(acpi_state);
/* reset firmware waking vector */
@@ -181,6 +187,7 @@ static void acpi_pm_finish(void)
*/
static void acpi_pm_end(void)
{
+ suspend_nvs_free();
/*
* This is necessary in case acpi_pm_finish() is not called during a
* failing transition to a sleep state.
@@ -251,7 +258,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
}
local_irq_save(flags);
- acpi_enable_wakeup_device(acpi_state);
switch (acpi_state) {
case ACPI_STATE_S1:
barrier();
@@ -297,11 +303,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
return ACPI_SUCCESS(status) ? 0 : -EFAULT;
}
-static void acpi_suspend_finish(void)
-{
- acpi_pm_finish();
-}
-
static int acpi_suspend_state_valid(suspend_state_t pm_state)
{
u32 acpi_state;
@@ -323,7 +324,7 @@ static struct platform_suspend_ops acpi_suspend_ops = {
.begin = acpi_suspend_begin,
.prepare_late = acpi_pm_prepare,
.enter = acpi_suspend_enter,
- .wake = acpi_suspend_finish,
+ .wake = acpi_pm_finish,
.end = acpi_pm_end,
};
@@ -336,9 +337,9 @@ static struct platform_suspend_ops acpi_suspend_ops = {
static int acpi_suspend_begin_old(suspend_state_t pm_state)
{
int error = acpi_suspend_begin(pm_state);
-
if (!error)
error = __acpi_pm_prepare();
+
return error;
}
@@ -349,9 +350,9 @@ static int acpi_suspend_begin_old(suspend_state_t pm_state)
static struct platform_suspend_ops acpi_suspend_ops_old = {
.valid = acpi_suspend_state_valid,
.begin = acpi_suspend_begin_old,
- .prepare_late = acpi_pm_freeze,
+ .prepare_late = acpi_pm_pre_suspend,
.enter = acpi_suspend_enter,
- .wake = acpi_suspend_finish,
+ .wake = acpi_pm_finish,
.end = acpi_pm_end,
.recover = acpi_pm_finish,
};
@@ -423,16 +424,6 @@ static int acpi_hibernation_begin(void)
return error;
}
-static int acpi_hibernation_pre_snapshot(void)
-{
- int error = acpi_pm_prepare();
-
- if (!error)
- suspend_nvs_save();
-
- return error;
-}
-
static int acpi_hibernation_enter(void)
{
acpi_status status = AE_OK;
@@ -441,7 +432,6 @@ static int acpi_hibernation_enter(void)
ACPI_FLUSH_CPU_CACHE();
local_irq_save(flags);
- acpi_enable_wakeup_device(ACPI_STATE_S4);
/* This shouldn't return. If it returns, we have a problem */
status = acpi_enter_sleep_state(ACPI_STATE_S4);
/* Reprogram control registers and execute _BFS */
@@ -481,7 +471,7 @@ static void acpi_pm_thaw(void)
static struct platform_hibernation_ops acpi_hibernation_ops = {
.begin = acpi_hibernation_begin,
.end = acpi_pm_end,
- .pre_snapshot = acpi_hibernation_pre_snapshot,
+ .pre_snapshot = acpi_pm_prepare,
.finish = acpi_pm_finish,
.prepare = acpi_pm_prepare,
.enter = acpi_hibernation_enter,
@@ -517,13 +507,6 @@ static int acpi_hibernation_begin_old(void)
return error;
}
-static int acpi_hibernation_pre_snapshot_old(void)
-{
- acpi_pm_freeze();
- suspend_nvs_save();
- return 0;
-}
-
/*
* The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
* been requested.
@@ -531,7 +514,7 @@ static int acpi_hibernation_pre_snapshot_old(void)
static struct platform_hibernation_ops acpi_hibernation_ops_old = {
.begin = acpi_hibernation_begin_old,
.end = acpi_pm_end,
- .pre_snapshot = acpi_hibernation_pre_snapshot_old,
+ .pre_snapshot = acpi_pm_pre_suspend,
.prepare = acpi_pm_freeze,
.finish = acpi_pm_finish,
.enter = acpi_hibernation_enter,
@@ -695,7 +678,6 @@ static void acpi_power_off(void)
/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
printk(KERN_DEBUG "%s called\n", __func__);
local_irq_disable();
- acpi_enable_wakeup_device(ACPI_STATE_S5);
acpi_enter_sleep_state(ACPI_STATE_S5);
}
diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h
index 25b8bd14928..d8821805c3b 100644
--- a/drivers/acpi/sleep.h
+++ b/drivers/acpi/sleep.h
@@ -2,9 +2,8 @@
extern u8 sleep_states[];
extern int acpi_suspend(u32 state);
-extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
-extern void acpi_enable_wakeup_device(u8 sleep_state);
-extern void acpi_disable_wakeup_device(u8 sleep_state);
+extern void acpi_enable_wakeup_devices(u8 sleep_state);
+extern void acpi_disable_wakeup_devices(u8 sleep_state);
extern struct list_head acpi_wakeup_device_list;
extern struct mutex acpi_device_lock;
diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index 388747a7ef4..dc6d1d9112f 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -21,46 +21,18 @@
ACPI_MODULE_NAME("wakeup_devices")
/**
- * acpi_enable_wakeup_device_prep - Prepare wake-up devices.
+ * acpi_enable_wakeup_devices - Enable wake-up device GPEs.
* @sleep_state: ACPI system sleep state.
*
- * Enable all wake-up devices' power, unless the requested system sleep state is
- * too deep.
+ * Enable wakeup device power of devices with the state.enable flag set and set
+ * the wakeup enable mask bits in the GPE registers that correspond to wakeup
+ * devices.
*/
-void acpi_enable_wakeup_device_prep(u8 sleep_state)
+void acpi_enable_wakeup_devices(u8 sleep_state)
{
struct list_head *node, *next;
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device *dev = container_of(node,
- struct acpi_device,
- wakeup_list);
-
- if (!dev->wakeup.flags.valid || !dev->wakeup.state.enabled
- || (sleep_state > (u32) dev->wakeup.sleep_state))
- continue;
-
- acpi_enable_wakeup_device_power(dev, sleep_state);
- }
-}
-
-/**
- * acpi_enable_wakeup_device - Enable wake-up device GPEs.
- * @sleep_state: ACPI system sleep state.
- *
- * Enable all wake-up devices' GPEs, with the assumption that
- * acpi_disable_all_gpes() was executed before, so we don't need to disable any
- * GPEs here.
- */
-void acpi_enable_wakeup_device(u8 sleep_state)
-{
- struct list_head *node, *next;
-
- /*
- * Caution: this routine must be invoked when interrupt is disabled
- * Refer ACPI2.0: P212
- */
- list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, wakeup_list);
@@ -68,6 +40,9 @@ void acpi_enable_wakeup_device(u8 sleep_state)
|| sleep_state > (u32) dev->wakeup.sleep_state)
continue;
+ if (dev->wakeup.state.enabled)
+ acpi_enable_wakeup_device_power(dev, sleep_state);
+
/* The wake-up power should have been enabled already. */
acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number,
ACPI_GPE_TYPE_WAKE);
@@ -75,13 +50,10 @@ void acpi_enable_wakeup_device(u8 sleep_state)
}
/**
- * acpi_disable_wakeup_device - Disable devices' wakeup capability.
+ * acpi_disable_wakeup_devices - Disable devices' wakeup capability.
* @sleep_state: ACPI system sleep state.
- *
- * This function only affects devices with wakeup.state.enabled set, which means
- * that it reverses the changes made by acpi_enable_wakeup_device_prep().
*/
-void acpi_disable_wakeup_device(u8 sleep_state)
+void acpi_disable_wakeup_devices(u8 sleep_state)
{
struct list_head *node, *next;