1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * acpi/internal.h 4 * For use by Linux/ACPI infrastructure, not drivers 5 * 6 * Copyright (c) 2009, Intel Corporation. 7 */ 8 9 #ifndef _ACPI_INTERNAL_H_ 10 #define _ACPI_INTERNAL_H_ 11 12 #include <linux/idr.h> 13 14 extern struct acpi_device *acpi_root; 15 16 int early_acpi_osi_init(void); 17 int acpi_osi_init(void); 18 acpi_status acpi_os_initialize1(void); 19 void acpi_scan_init(void); 20 #ifdef CONFIG_PCI 21 void acpi_pci_root_init(void); 22 void acpi_pci_link_init(void); 23 #else 24 static inline void acpi_pci_root_init(void) {} 25 static inline void acpi_pci_link_init(void) {} 26 #endif 27 void acpi_processor_init(void); 28 void acpi_platform_init(void); 29 void acpi_pnp_init(void); 30 void acpi_int340x_thermal_init(void); 31 int acpi_sysfs_init(void); 32 void acpi_gpe_apply_masked_gpes(void); 33 void acpi_container_init(void); 34 void acpi_memory_hotplug_init(void); 35 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 36 void pci_ioapic_remove(struct acpi_pci_root *root); 37 int acpi_ioapic_remove(struct acpi_pci_root *root); 38 #else 39 static inline void pci_ioapic_remove(struct acpi_pci_root *root) { return; } 40 static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; } 41 #endif 42 #ifdef CONFIG_ACPI_DOCK 43 void register_dock_dependent_device(struct acpi_device *adev, 44 acpi_handle dshandle); 45 int dock_notify(struct acpi_device *adev, u32 event); 46 void acpi_dock_add(struct acpi_device *adev); 47 #else 48 static inline void register_dock_dependent_device(struct acpi_device *adev, 49 acpi_handle dshandle) {} 50 static inline int dock_notify(struct acpi_device *adev, u32 event) { return -ENODEV; } 51 static inline void acpi_dock_add(struct acpi_device *adev) {} 52 #endif 53 #ifdef CONFIG_X86 54 void acpi_cmos_rtc_init(void); 55 #else 56 static inline void acpi_cmos_rtc_init(void) {} 57 #endif 58 int acpi_rev_override_setup(char *str); 59 60 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug, 61 const char *name); 62 int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler, 63 const char *hotplug_profile_name); 64 void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val); 65 66 #ifdef CONFIG_DEBUG_FS 67 extern struct dentry *acpi_debugfs_dir; 68 void acpi_debugfs_init(void); 69 #else 70 static inline void acpi_debugfs_init(void) { return; } 71 #endif 72 #ifdef CONFIG_PCI 73 void acpi_lpss_init(void); 74 #else 75 static inline void acpi_lpss_init(void) {} 76 #endif 77 78 void acpi_apd_init(void); 79 80 acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); 81 bool acpi_queue_hotplug_work(struct work_struct *work); 82 void acpi_device_hotplug(struct acpi_device *adev, u32 src); 83 bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); 84 85 acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context); 86 void acpi_scan_table_notify(void); 87 88 /* -------------------------------------------------------------------------- 89 Device Node Initialization / Removal 90 -------------------------------------------------------------------------- */ 91 #define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ 92 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) 93 94 extern struct list_head acpi_bus_id_list; 95 96 struct acpi_device_bus_id { 97 const char *bus_id; 98 struct ida instance_ida; 99 struct list_head node; 100 }; 101 102 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, 103 int type, void (*release)(struct device *)); 104 int acpi_tie_acpi_dev(struct acpi_device *adev); 105 int acpi_device_add(struct acpi_device *device); 106 int acpi_device_setup_files(struct acpi_device *dev); 107 void acpi_device_remove_files(struct acpi_device *dev); 108 void acpi_device_add_finalize(struct acpi_device *device); 109 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); 110 bool acpi_device_is_present(const struct acpi_device *adev); 111 bool acpi_device_is_battery(struct acpi_device *adev); 112 bool acpi_device_is_first_physical_node(struct acpi_device *adev, 113 const struct device *dev); 114 int acpi_bus_register_early_device(int type); 115 116 /* -------------------------------------------------------------------------- 117 Device Matching and Notification 118 -------------------------------------------------------------------------- */ 119 const struct acpi_device *acpi_companion_match(const struct device *dev); 120 int __acpi_device_uevent_modalias(const struct acpi_device *adev, 121 struct kobj_uevent_env *env); 122 123 /* -------------------------------------------------------------------------- 124 Power Resource 125 -------------------------------------------------------------------------- */ 126 void acpi_power_resources_list_free(struct list_head *list); 127 int acpi_extract_power_resources(union acpi_object *package, unsigned int start, 128 struct list_head *list); 129 struct acpi_device *acpi_add_power_resource(acpi_handle handle); 130 void acpi_power_add_remove_device(struct acpi_device *adev, bool add); 131 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level); 132 int acpi_device_sleep_wake(struct acpi_device *dev, 133 int enable, int sleep_state, int dev_state); 134 int acpi_power_get_inferred_state(struct acpi_device *device, int *state); 135 int acpi_power_on_resources(struct acpi_device *device, int state); 136 int acpi_power_transition(struct acpi_device *device, int state); 137 void acpi_turn_off_unused_power_resources(void); 138 139 /* -------------------------------------------------------------------------- 140 Device Power Management 141 -------------------------------------------------------------------------- */ 142 int acpi_device_get_power(struct acpi_device *device, int *state); 143 int acpi_wakeup_device_init(void); 144 145 /* -------------------------------------------------------------------------- 146 Processor 147 -------------------------------------------------------------------------- */ 148 #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC 149 void acpi_early_processor_control_setup(void); 150 void acpi_early_processor_set_pdc(void); 151 152 void acpi_proc_quirk_mwait_check(void); 153 bool processor_physically_present(acpi_handle handle); 154 #else 155 static inline void acpi_early_processor_control_setup(void) {} 156 #endif 157 158 /* -------------------------------------------------------------------------- 159 Embedded Controller 160 -------------------------------------------------------------------------- */ 161 162 enum acpi_ec_event_state { 163 EC_EVENT_READY = 0, /* Event work can be submitted */ 164 EC_EVENT_IN_PROGRESS, /* Event work is pending or being processed */ 165 EC_EVENT_COMPLETE, /* Event work processing has completed */ 166 }; 167 168 struct acpi_ec { 169 acpi_handle handle; 170 int gpe; 171 int irq; 172 unsigned long command_addr; 173 unsigned long data_addr; 174 bool global_lock; 175 unsigned long flags; 176 unsigned long reference_count; 177 struct mutex mutex; 178 wait_queue_head_t wait; 179 struct list_head list; 180 struct transaction *curr; 181 spinlock_t lock; 182 struct work_struct work; 183 unsigned long timestamp; 184 enum acpi_ec_event_state event_state; 185 unsigned int events_to_process; 186 unsigned int events_in_progress; 187 unsigned int queries_in_progress; 188 bool busy_polling; 189 unsigned int polling_guard; 190 }; 191 192 extern struct acpi_ec *first_ec; 193 194 /* If we find an EC via the ECDT, we need to keep a ptr to its context */ 195 /* External interfaces use first EC only, so remember */ 196 typedef int (*acpi_ec_query_func) (void *data); 197 198 void acpi_ec_init(void); 199 void acpi_ec_ecdt_probe(void); 200 void acpi_ec_dsdt_probe(void); 201 void acpi_ec_block_transactions(void); 202 void acpi_ec_unblock_transactions(void); 203 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 204 acpi_handle handle, acpi_ec_query_func func, 205 void *data); 206 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); 207 208 #ifdef CONFIG_PM_SLEEP 209 void acpi_ec_flush_work(void); 210 bool acpi_ec_dispatch_gpe(void); 211 #endif 212 213 214 /*-------------------------------------------------------------------------- 215 Suspend/Resume 216 -------------------------------------------------------------------------- */ 217 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 218 extern bool acpi_s2idle_wakeup(void); 219 extern int acpi_sleep_init(void); 220 #else 221 static inline bool acpi_s2idle_wakeup(void) { return false; } 222 static inline int acpi_sleep_init(void) { return -ENXIO; } 223 #endif 224 225 #ifdef CONFIG_ACPI_SLEEP 226 void acpi_sleep_proc_init(void); 227 int suspend_nvs_alloc(void); 228 void suspend_nvs_free(void); 229 int suspend_nvs_save(void); 230 void suspend_nvs_restore(void); 231 #else 232 static inline void acpi_sleep_proc_init(void) {} 233 static inline int suspend_nvs_alloc(void) { return 0; } 234 static inline void suspend_nvs_free(void) {} 235 static inline int suspend_nvs_save(void) { return 0; } 236 static inline void suspend_nvs_restore(void) {} 237 #endif 238 239 #ifdef CONFIG_X86 240 bool force_storage_d3(void); 241 #else 242 static inline bool force_storage_d3(void) 243 { 244 return false; 245 } 246 #endif 247 248 /*-------------------------------------------------------------------------- 249 Device properties 250 -------------------------------------------------------------------------- */ 251 #define ACPI_DT_NAMESPACE_HID "PRP0001" 252 253 void acpi_init_properties(struct acpi_device *adev); 254 void acpi_free_properties(struct acpi_device *adev); 255 256 #ifdef CONFIG_X86 257 void acpi_extract_apple_properties(struct acpi_device *adev); 258 #else 259 static inline void acpi_extract_apple_properties(struct acpi_device *adev) {} 260 #endif 261 262 /*-------------------------------------------------------------------------- 263 Watchdog 264 -------------------------------------------------------------------------- */ 265 266 #ifdef CONFIG_ACPI_WATCHDOG 267 void acpi_watchdog_init(void); 268 #else 269 static inline void acpi_watchdog_init(void) {} 270 #endif 271 272 #ifdef CONFIG_ACPI_LPIT 273 void acpi_init_lpit(void); 274 #else 275 static inline void acpi_init_lpit(void) { } 276 #endif 277 278 #endif /* _ACPI_INTERNAL_H_ */ 279