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-rw-r--r--include/linux/notifier.h7
-rw-r--r--include/linux/pm.h1
-rw-r--r--include/linux/pm_opp.h41
-rw-r--r--include/linux/reboot.h91
4 files changed, 128 insertions, 12 deletions
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index 87069b8459af..aef88c2d1173 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -150,6 +150,11 @@ extern int raw_notifier_chain_register(struct raw_notifier_head *nh,
extern int srcu_notifier_chain_register(struct srcu_notifier_head *nh,
struct notifier_block *nb);
+extern int atomic_notifier_chain_register_unique_prio(
+ struct atomic_notifier_head *nh, struct notifier_block *nb);
+extern int blocking_notifier_chain_register_unique_prio(
+ struct blocking_notifier_head *nh, struct notifier_block *nb);
+
extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh,
struct notifier_block *nb);
extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh,
@@ -173,6 +178,8 @@ extern int blocking_notifier_call_chain_robust(struct blocking_notifier_head *nh
extern int raw_notifier_call_chain_robust(struct raw_notifier_head *nh,
unsigned long val_up, unsigned long val_down, void *v);
+extern bool atomic_notifier_call_chain_is_empty(struct atomic_notifier_head *nh);
+
#define NOTIFY_DONE 0x0000 /* Don't care */
#define NOTIFY_OK 0x0001 /* Suits me */
#define NOTIFY_STOP_MASK 0x8000 /* Don't call further */
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 70ec69d8bafd..871c9c49ec9d 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -21,7 +21,6 @@
* Callbacks for platform drivers to implement.
*/
extern void (*pm_power_off)(void);
-extern void (*pm_power_off_prepare)(void);
struct device; /* we have a circular dep with device.h */
#ifdef CONFIG_VT_CONSOLE_SLEEP
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 0d85a63a1f78..6708b4ec244d 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -117,18 +117,25 @@ unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev);
struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
unsigned long freq,
bool available);
-struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
- unsigned int level);
-struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
- unsigned int *level);
-
struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
unsigned long *freq);
struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
unsigned long u_volt);
+struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
+ unsigned int level);
+struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
+ unsigned int *level);
+
struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
unsigned long *freq);
+
+struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
+ unsigned int *bw, int index);
+
+struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
+ unsigned int *bw, int index);
+
void dev_pm_opp_put(struct dev_pm_opp *opp);
int dev_pm_opp_add(struct device *dev, unsigned long freq,
@@ -243,12 +250,6 @@ static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev)
return 0;
}
-static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
- unsigned long freq, bool available)
-{
- return ERR_PTR(-EOPNOTSUPP);
-}
-
static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
unsigned int level)
{
@@ -261,6 +262,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
return ERR_PTR(-EOPNOTSUPP);
}
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
+ unsigned long freq, bool available)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
unsigned long *freq)
{
@@ -279,6 +286,18 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
return ERR_PTR(-EOPNOTSUPP);
}
+static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
+ unsigned int *bw, int index)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
+ unsigned int *bw, int index)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {}
static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
diff --git a/include/linux/reboot.h b/include/linux/reboot.h
index a2429648d831..e5d9ef886179 100644
--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -7,6 +7,7 @@
#include <uapi/linux/reboot.h>
struct device;
+struct sys_off_handler;
#define SYS_DOWN 0x0001 /* Notify of system down */
#define SYS_RESTART SYS_DOWN
@@ -62,6 +63,95 @@ extern void machine_shutdown(void);
struct pt_regs;
extern void machine_crash_shutdown(struct pt_regs *);
+void do_kernel_power_off(void);
+
+/*
+ * sys-off handler API.
+ */
+
+/*
+ * Standard sys-off priority levels. Users are expected to set priorities
+ * relative to the standard levels.
+ *
+ * SYS_OFF_PRIO_PLATFORM: Use this for platform-level handlers.
+ *
+ * SYS_OFF_PRIO_LOW: Use this for handler of last resort.
+ *
+ * SYS_OFF_PRIO_DEFAULT: Use this for normal handlers.
+ *
+ * SYS_OFF_PRIO_HIGH: Use this for higher priority handlers.
+ *
+ * SYS_OFF_PRIO_FIRMWARE: Use this if handler uses firmware call.
+ */
+#define SYS_OFF_PRIO_PLATFORM -256
+#define SYS_OFF_PRIO_LOW -128
+#define SYS_OFF_PRIO_DEFAULT 0
+#define SYS_OFF_PRIO_HIGH 192
+#define SYS_OFF_PRIO_FIRMWARE 224
+
+enum sys_off_mode {
+ /**
+ * @SYS_OFF_MODE_POWER_OFF_PREPARE:
+ *
+ * Handlers prepare system to be powered off. Handlers are
+ * allowed to sleep.
+ */
+ SYS_OFF_MODE_POWER_OFF_PREPARE,
+
+ /**
+ * @SYS_OFF_MODE_POWER_OFF:
+ *
+ * Handlers power-off system. Handlers are disallowed to sleep.
+ */
+ SYS_OFF_MODE_POWER_OFF,
+
+ /**
+ * @SYS_OFF_MODE_RESTART:
+ *
+ * Handlers restart system. Handlers are disallowed to sleep.
+ */
+ SYS_OFF_MODE_RESTART,
+};
+
+/**
+ * struct sys_off_data - sys-off callback argument
+ *
+ * @mode: Mode ID. Currently used only by the sys-off restart mode,
+ * see enum reboot_mode for the available modes.
+ * @cb_data: User's callback data.
+ * @cmd: Command string. Currently used only by the sys-off restart mode,
+ * NULL otherwise.
+ */
+struct sys_off_data {
+ int mode;
+ void *cb_data;
+ const char *cmd;
+};
+
+struct sys_off_handler *
+register_sys_off_handler(enum sys_off_mode mode,
+ int priority,
+ int (*callback)(struct sys_off_data *data),
+ void *cb_data);
+void unregister_sys_off_handler(struct sys_off_handler *handler);
+
+int devm_register_sys_off_handler(struct device *dev,
+ enum sys_off_mode mode,
+ int priority,
+ int (*callback)(struct sys_off_data *data),
+ void *cb_data);
+
+int devm_register_power_off_handler(struct device *dev,
+ int (*callback)(struct sys_off_data *data),
+ void *cb_data);
+
+int devm_register_restart_handler(struct device *dev,
+ int (*callback)(struct sys_off_data *data),
+ void *cb_data);
+
+int register_platform_power_off(void (*power_off)(void));
+void unregister_platform_power_off(void (*power_off)(void));
+
/*
* Architecture independent implemenations of sys_reboot commands.
*/
@@ -70,6 +160,7 @@ extern void kernel_restart_prepare(char *cmd);
extern void kernel_restart(char *cmd);
extern void kernel_halt(void);
extern void kernel_power_off(void);
+extern bool kernel_can_power_off(void);
void ctrl_alt_del(void);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-20 06:18:42 +0000