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 int acpi_device_setup_files(struct acpi_device *dev); 122 void acpi_device_remove_files(struct acpi_device *dev); 123 void acpi_device_add_finalize(struct acpi_device *device); 124 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); 125 bool acpi_device_is_enabled(const struct acpi_device *adev); 126 bool acpi_device_is_present(const struct acpi_device *adev); 127 bool acpi_device_is_battery(struct acpi_device *adev); 128 bool acpi_device_is_first_physical_node(struct acpi_device *adev, 129 const struct device *dev); 130 int acpi_bus_register_early_device(int type); 131 132 /* -------------------------------------------------------------------------- 133 Device Matching and Notification 134 -------------------------------------------------------------------------- */ 135 const struct acpi_device *acpi_companion_match(const struct device *dev); 136 int __acpi_device_uevent_modalias(const struct acpi_device *adev, 137 struct kobj_uevent_env *env); 138 139 /* -------------------------------------------------------------------------- 140 Power Resource 141 -------------------------------------------------------------------------- */ 142 void acpi_power_resources_list_free(struct list_head *list); 143 int acpi_extract_power_resources(union acpi_object *package, unsigned int start, 144 struct list_head *list); 145 struct acpi_device *acpi_add_power_resource(acpi_handle handle); 146 void acpi_power_add_remove_device(struct acpi_device *adev, bool add); 147 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level); 148 int acpi_device_sleep_wake(struct acpi_device *dev, 149 int enable, int sleep_state, int dev_state); 150 int acpi_power_get_inferred_state(struct acpi_device *device, int *state); 151 int acpi_power_on_resources(struct acpi_device *device, int state); 152 int acpi_power_transition(struct acpi_device *device, int state); 153 void acpi_turn_off_unused_power_resources(void); 154 155 /* -------------------------------------------------------------------------- 156 Device Power Management 157 -------------------------------------------------------------------------- */ 158 int acpi_device_get_power(struct acpi_device *device, int *state); 159 int acpi_wakeup_device_init(void); 160 161 /* -------------------------------------------------------------------------- 162 Processor 163 -------------------------------------------------------------------------- */ 164 #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC 165 void acpi_early_processor_control_setup(void); 166 void acpi_early_processor_set_pdc(void); 167 #ifdef CONFIG_X86 168 void acpi_proc_quirk_mwait_check(void); 169 #else 170 static inline void acpi_proc_quirk_mwait_check(void) {} 171 #endif 172 bool processor_physically_present(acpi_handle handle); 173 #else 174 static inline void acpi_early_processor_control_setup(void) {} 175 #endif 176 177 /* -------------------------------------------------------------------------- 178 Embedded Controller 179 -------------------------------------------------------------------------- */ 180 181 enum acpi_ec_event_state { 182 EC_EVENT_READY = 0, /* Event work can be submitted */ 183 EC_EVENT_IN_PROGRESS, /* Event work is pending or being processed */ 184 EC_EVENT_COMPLETE, /* Event work processing has completed */ 185 }; 186 187 struct acpi_ec { 188 acpi_handle handle; 189 int gpe; 190 int irq; 191 unsigned long command_addr; 192 unsigned long data_addr; 193 bool global_lock; 194 unsigned long flags; 195 unsigned long reference_count; 196 struct mutex mutex; 197 wait_queue_head_t wait; 198 struct list_head list; 199 struct transaction *curr; 200 spinlock_t lock; 201 struct work_struct work; 202 unsigned long timestamp; 203 enum acpi_ec_event_state event_state; 204 unsigned int events_to_process; 205 unsigned int events_in_progress; 206 unsigned int queries_in_progress; 207 bool busy_polling; 208 unsigned int polling_guard; 209 }; 210 211 extern struct acpi_ec *first_ec; 212 213 /* If we find an EC via the ECDT, we need to keep a ptr to its context */ 214 /* External interfaces use first EC only, so remember */ 215 typedef int (*acpi_ec_query_func) (void *data); 216 217 void acpi_ec_init(void); 218 void acpi_ec_ecdt_probe(void); 219 void acpi_ec_dsdt_probe(void); 220 void acpi_ec_block_transactions(void); 221 void acpi_ec_unblock_transactions(void); 222 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 223 acpi_handle handle, acpi_ec_query_func func, 224 void *data); 225 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); 226 227 #ifdef CONFIG_PM_SLEEP 228 void acpi_ec_flush_work(void); 229 bool acpi_ec_dispatch_gpe(void); 230 #endif 231 232 233 /*-------------------------------------------------------------------------- 234 Suspend/Resume 235 -------------------------------------------------------------------------- */ 236 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 237 extern bool acpi_s2idle_wakeup(void); 238 extern int acpi_sleep_init(void); 239 #else 240 static inline bool acpi_s2idle_wakeup(void) { return false; } 241 static inline int acpi_sleep_init(void) { return -ENXIO; } 242 #endif 243 244 #ifdef CONFIG_ACPI_SLEEP 245 void acpi_sleep_proc_init(void); 246 int suspend_nvs_alloc(void); 247 void suspend_nvs_free(void); 248 int suspend_nvs_save(void); 249 void suspend_nvs_restore(void); 250 #else 251 static inline void acpi_sleep_proc_init(void) {} 252 static inline int suspend_nvs_alloc(void) { return 0; } 253 static inline void suspend_nvs_free(void) {} 254 static inline int suspend_nvs_save(void) { return 0; } 255 static inline void suspend_nvs_restore(void) {} 256 #endif 257 258 #ifdef CONFIG_X86 259 bool force_storage_d3(void); 260 #else 261 static inline bool force_storage_d3(void) 262 { 263 return false; 264 } 265 #endif 266 267 /*-------------------------------------------------------------------------- 268 Device properties 269 -------------------------------------------------------------------------- */ 270 #define ACPI_DT_NAMESPACE_HID "PRP0001" 271 272 void acpi_init_properties(struct acpi_device *adev); 273 void acpi_free_properties(struct acpi_device *adev); 274 275 #ifdef CONFIG_X86 276 void acpi_extract_apple_properties(struct acpi_device *adev); 277 #else 278 static inline void acpi_extract_apple_properties(struct acpi_device *adev) {} 279 #endif 280 281 /*-------------------------------------------------------------------------- 282 Watchdog 283 -------------------------------------------------------------------------- */ 284 285 #ifdef CONFIG_ACPI_WATCHDOG 286 void acpi_watchdog_init(void); 287 #else 288 static inline void acpi_watchdog_init(void) {} 289 #endif 290 291 #ifdef CONFIG_ACPI_LPIT 292 void acpi_init_lpit(void); 293 #else 294 static inline void acpi_init_lpit(void) { } 295 #endif 296 297 /*-------------------------------------------------------------------------- 298 ACPI _CRS CSI-2 and MIPI DisCo for Imaging 299 -------------------------------------------------------------------------- */ 300 301 void acpi_mipi_check_crs_csi2(acpi_handle handle); 302 void acpi_mipi_scan_crs_csi2(void); 303 void acpi_mipi_init_crs_csi2_swnodes(void); 304 void acpi_mipi_crs_csi2_cleanup(void); 305 #ifdef CONFIG_X86 306 bool acpi_graph_ignore_port(acpi_handle handle); 307 #else 308 static inline bool acpi_graph_ignore_port(acpi_handle handle) { return false; } 309 #endif 310 311 #endif /* _ACPI_INTERNAL_H_ */ 312