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-rw-r--r--include/linux/suspend.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 33aaf9a9596c..8b6ec7ef0854 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -202,6 +202,36 @@ struct platform_freeze_ops {
extern void suspend_set_ops(const struct platform_suspend_ops *ops);
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)
+
+static inline void pm_suspend_clear_flags(void)
+{
+ pm_suspend_global_flags = 0;
+}
+
+static inline void pm_set_suspend_via_firmware(void)
+{
+ pm_suspend_global_flags |= PM_SUSPEND_FLAG_FW_SUSPEND;
+}
+
+static inline void pm_set_resume_via_firmware(void)
+{
+ pm_suspend_global_flags |= PM_SUSPEND_FLAG_FW_RESUME;
+}
+
+static inline bool pm_suspend_via_firmware(void)
+{
+ return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_SUSPEND);
+}
+
+static inline bool pm_resume_via_firmware(void)
+{
+ return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_RESUME);
+}
+
/* Suspend-to-idle state machnine. */
enum freeze_state {
FREEZE_STATE_NONE, /* Not suspended/suspending. */
@@ -241,6 +271,12 @@ extern int pm_suspend(suspend_state_t state);
#else /* !CONFIG_SUSPEND */
#define suspend_valid_only_mem NULL
+static inline void pm_suspend_clear_flags(void) {}
+static inline void pm_set_suspend_via_firmware(void) {}
+static inline void pm_set_resume_via_firmware(void) {}
+static inline bool pm_suspend_via_firmware(void) { return false; }
+static inline bool pm_resume_via_firmware(void) { return false; }
+
static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {}
static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; }
static inline bool idle_should_freeze(void) { return false; }