summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/linux/suspend.h26
1 files changed, 24 insertions, 2 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 8594001e8be8..f0d262ad7b78 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -209,8 +209,9 @@ extern int suspend_valid_only_mem(suspend_state_t state);
extern unsigned int pm_suspend_global_flags;
-#define PM_SUSPEND_FLAG_FW_SUSPEND (1 << 0)
-#define PM_SUSPEND_FLAG_FW_RESUME (1 << 1)
+#define PM_SUSPEND_FLAG_FW_SUSPEND BIT(0)
+#define PM_SUSPEND_FLAG_FW_RESUME BIT(1)
+#define PM_SUSPEND_FLAG_NO_PLATFORM BIT(2)
static inline void pm_suspend_clear_flags(void)
{
@@ -227,6 +228,11 @@ static inline void pm_set_resume_via_firmware(void)
pm_suspend_global_flags |= PM_SUSPEND_FLAG_FW_RESUME;
}
+static inline void pm_set_suspend_no_platform(void)
+{
+ pm_suspend_global_flags |= PM_SUSPEND_FLAG_NO_PLATFORM;
+}
+
/**
* pm_suspend_via_firmware - Check if platform firmware will suspend the system.
*
@@ -268,6 +274,22 @@ static inline bool pm_resume_via_firmware(void)
return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_RESUME);
}
+/**
+ * pm_suspend_no_platform - Check if platform may change device power states.
+ *
+ * To be called during system-wide power management transitions to sleep states
+ * or during the subsequent system-wide transitions back to the working state.
+ *
+ * Return 'true' if the power states of devices remain under full control of the
+ * kernel throughout the system-wide suspend and resume cycle in progress (that
+ * is, if a device is put into a certain power state during suspend, it can be
+ * expected to remain in that state during resume).
+ */
+static inline bool pm_suspend_no_platform(void)
+{
+ return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_NO_PLATFORM);
+}
+
/* Suspend-to-idle state machnine. */
enum s2idle_states {
S2IDLE_STATE_NONE, /* Not suspended/suspending. */