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 73 #if defined(CONFIG_X86) && defined(CONFIG_PCI) 74 void acpi_lpss_init(void); 75 #else 76 static inline void acpi_lpss_init(void) {} 77 #endif 78 79 void acpi_apd_init(void); 80 81 acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); 82 bool acpi_queue_hotplug_work(struct work_struct *work); 83 void acpi_device_hotplug(struct acpi_device *adev, u32 src); 84 bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); 85 86 acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context); 87 void acpi_scan_table_notify(void); 88 89 int acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp); 90 int acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp); 91 int acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp); 92 int acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp); 93 94 #ifdef CONFIG_ARM64 95 int acpi_arch_thermal_cpufreq_pctg(void); 96 #else 97 static inline int acpi_arch_thermal_cpufreq_pctg(void) 98 { 99 return 0; 100 } 101 #endif 102 103 /* -------------------------------------------------------------------------- 104 Device Node Initialization / Removal 105 -------------------------------------------------------------------------- */ 106 #define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ 107 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) 108 109 extern struct list_head acpi_bus_id_list; 110 111 struct acpi_device_bus_id { 112 const char *bus_id; 113 struct ida instance_ida; 114 struct list_head node; 115 }; 116 117 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, 118 int type, void (*release)(struct device *)); 119 int acpi_tie_acpi_dev(struct acpi_device *adev); 120 int acpi_device_add(struct acpi_device *device); 121 void acpi_device_setup_files(struct acpi_device *dev); 122 void acpi_device_remove_files(struct acpi_device *dev); 123 extern const struct attribute_group *acpi_groups[]; 124 void acpi_device_add_finalize(struct acpi_device *device); 125 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); 126 bool acpi_device_is_enabled(const struct acpi_device *adev); 127 bool acpi_device_is_present(const struct acpi_device *adev); 128 bool acpi_device_is_battery(struct acpi_device *adev); 129 bool acpi_device_is_first_physical_node(struct acpi_device *adev, 130 const struct device *dev); 131 int acpi_bus_register_early_device(int type); 132 133 /* -------------------------------------------------------------------------- 134 Device Matching and Notification 135 -------------------------------------------------------------------------- */ 136 const struct acpi_device *acpi_companion_match(const struct device *dev); 137 int __acpi_device_uevent_modalias(const struct acpi_device *adev, 138 struct kobj_uevent_env *env); 139 140 /* -------------------------------------------------------------------------- 141 Power Resource 142 -------------------------------------------------------------------------- */ 143 void acpi_power_resources_list_free(struct list_head *list); 144 int acpi_extract_power_resources(union acpi_object *package, unsigned int start, 145 struct list_head *list); 146 struct acpi_device *acpi_add_power_resource(acpi_handle handle); 147 void acpi_power_add_remove_device(struct acpi_device *adev, bool add); 148 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level); 149 int acpi_device_sleep_wake(struct acpi_device *dev, 150 int enable, int sleep_state, int dev_state); 151 int acpi_power_get_inferred_state(struct acpi_device *device, int *state); 152 int acpi_power_on_resources(struct acpi_device *device, int state); 153 int acpi_power_transition(struct acpi_device *device, int state); 154 void acpi_turn_off_unused_power_resources(void); 155 156 /* -------------------------------------------------------------------------- 157 Device Power Management 158 -------------------------------------------------------------------------- */ 159 int acpi_device_get_power(struct acpi_device *device, int *state); 160 int acpi_wakeup_device_init(void); 161 162 /* -------------------------------------------------------------------------- 163 Processor 164 -------------------------------------------------------------------------- */ 165 #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC 166 void acpi_early_processor_control_setup(void); 167 void acpi_early_processor_set_pdc(void); 168 #ifdef CONFIG_X86 169 void acpi_proc_quirk_mwait_check(void); 170 #else 171 static inline void acpi_proc_quirk_mwait_check(void) {} 172 #endif 173 bool processor_physically_present(acpi_handle handle); 174 #else 175 static inline void acpi_early_processor_control_setup(void) {} 176 #endif 177 178 /* -------------------------------------------------------------------------- 179 Embedded Controller 180 -------------------------------------------------------------------------- */ 181 182 enum acpi_ec_event_state { 183 EC_EVENT_READY = 0, /* Event work can be submitted */ 184 EC_EVENT_IN_PROGRESS, /* Event work is pending or being processed */ 185 EC_EVENT_COMPLETE, /* Event work processing has completed */ 186 }; 187 188 struct acpi_ec { 189 acpi_handle handle; 190 int gpe; 191 int irq; 192 unsigned long command_addr; 193 unsigned long data_addr; 194 bool global_lock; 195 unsigned long flags; 196 unsigned long reference_count; 197 struct mutex mutex; 198 wait_queue_head_t wait; 199 struct list_head list; 200 struct transaction *curr; 201 spinlock_t lock; 202 struct work_struct work; 203 unsigned long timestamp; 204 enum acpi_ec_event_state event_state; 205 unsigned int events_to_process; 206 unsigned int events_in_progress; 207 unsigned int queries_in_progress; 208 bool busy_polling; 209 unsigned int polling_guard; 210 }; 211 212 extern struct acpi_ec *first_ec; 213 214 /* If we find an EC via the ECDT, we need to keep a ptr to its context */ 215 /* External interfaces use first EC only, so remember */ 216 typedef int (*acpi_ec_query_func) (void *data); 217 218 #ifdef CONFIG_ACPI_EC 219 220 void acpi_ec_init(void); 221 void acpi_ec_ecdt_probe(void); 222 void acpi_ec_dsdt_probe(void); 223 void acpi_ec_block_transactions(void); 224 void acpi_ec_unblock_transactions(void); 225 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 226 acpi_handle handle, acpi_ec_query_func func, 227 void *data); 228 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); 229 void acpi_ec_register_opregions(struct acpi_device *adev); 230 231 #ifdef CONFIG_PM_SLEEP 232 void acpi_ec_flush_work(void); 233 bool acpi_ec_dispatch_gpe(void); 234 #endif 235 236 #else 237 238 static inline void acpi_ec_init(void) {} 239 static inline void acpi_ec_ecdt_probe(void) {} 240 static inline void acpi_ec_dsdt_probe(void) {} 241 static inline void acpi_ec_block_transactions(void) {} 242 static inline void acpi_ec_unblock_transactions(void) {} 243 static inline int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 244 acpi_handle handle, acpi_ec_query_func func, 245 void *data) 246 { 247 return -ENXIO; 248 } 249 static inline void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) {} 250 static inline void acpi_ec_register_opregions(struct acpi_device *adev) {} 251 252 static inline void acpi_ec_flush_work(void) {} 253 static inline bool acpi_ec_dispatch_gpe(void) 254 { 255 return false; 256 } 257 258 #endif 259 260 /*-------------------------------------------------------------------------- 261 Suspend/Resume 262 -------------------------------------------------------------------------- */ 263 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 264 extern bool acpi_s2idle_wakeup(void); 265 extern int acpi_sleep_init(void); 266 #else 267 static inline bool acpi_s2idle_wakeup(void) { return false; } 268 static inline int acpi_sleep_init(void) { return -ENXIO; } 269 #endif 270 271 #ifdef CONFIG_ACPI_SLEEP 272 void acpi_sleep_proc_init(void); 273 int suspend_nvs_alloc(void); 274 void suspend_nvs_free(void); 275 int suspend_nvs_save(void); 276 void suspend_nvs_restore(void); 277 #else 278 static inline void acpi_sleep_proc_init(void) {} 279 static inline int suspend_nvs_alloc(void) { return 0; } 280 static inline void suspend_nvs_free(void) {} 281 static inline int suspend_nvs_save(void) { return 0; } 282 static inline void suspend_nvs_restore(void) {} 283 #endif 284 285 #ifdef CONFIG_X86 286 bool force_storage_d3(void); 287 #else 288 static inline bool force_storage_d3(void) 289 { 290 return false; 291 } 292 #endif 293 294 /*-------------------------------------------------------------------------- 295 Device properties 296 -------------------------------------------------------------------------- */ 297 #define ACPI_DT_NAMESPACE_HID "PRP0001" 298 299 void acpi_init_properties(struct acpi_device *adev); 300 void acpi_free_properties(struct acpi_device *adev); 301 302 #ifdef CONFIG_X86 303 void acpi_extract_apple_properties(struct acpi_device *adev); 304 #else 305 static inline void acpi_extract_apple_properties(struct acpi_device *adev) {} 306 #endif 307 308 /*-------------------------------------------------------------------------- 309 Watchdog 310 -------------------------------------------------------------------------- */ 311 312 #ifdef CONFIG_ACPI_WATCHDOG 313 void acpi_watchdog_init(void); 314 #else 315 static inline void acpi_watchdog_init(void) {} 316 #endif 317 318 #ifdef CONFIG_ACPI_LPIT 319 void acpi_init_lpit(void); 320 #else 321 static inline void acpi_init_lpit(void) { } 322 #endif 323 324 /*-------------------------------------------------------------------------- 325 ACPI _CRS CSI-2 and MIPI DisCo for Imaging 326 -------------------------------------------------------------------------- */ 327 328 void acpi_mipi_check_crs_csi2(acpi_handle handle); 329 void acpi_mipi_scan_crs_csi2(void); 330 void acpi_mipi_init_crs_csi2_swnodes(void); 331 void acpi_mipi_crs_csi2_cleanup(void); 332 #ifdef CONFIG_X86 333 bool acpi_graph_ignore_port(acpi_handle handle); 334 #else 335 static inline bool acpi_graph_ignore_port(acpi_handle handle) { return false; } 336 #endif 337 338 #endif /* _ACPI_INTERNAL_H_ */ 339