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 int early_acpi_osi_init(void); 15 int acpi_osi_init(void); 16 acpi_status acpi_os_initialize1(void); 17 void acpi_scan_init(void); 18 #ifdef CONFIG_PCI 19 void acpi_pci_root_init(void); 20 void acpi_pci_link_init(void); 21 #else 22 static inline void acpi_pci_root_init(void) {} 23 static inline void acpi_pci_link_init(void) {} 24 #endif 25 void acpi_processor_init(void); 26 void acpi_platform_init(void); 27 void acpi_pnp_init(void); 28 void acpi_int340x_thermal_init(void); 29 #ifdef CONFIG_ARM_AMBA 30 void acpi_amba_init(void); 31 #else 32 static inline void acpi_amba_init(void) {} 33 #endif 34 int acpi_sysfs_init(void); 35 void acpi_gpe_apply_masked_gpes(void); 36 void acpi_container_init(void); 37 void acpi_memory_hotplug_init(void); 38 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 39 void pci_ioapic_remove(struct acpi_pci_root *root); 40 int acpi_ioapic_remove(struct acpi_pci_root *root); 41 #else 42 static inline void pci_ioapic_remove(struct acpi_pci_root *root) { return; } 43 static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; } 44 #endif 45 #ifdef CONFIG_ACPI_DOCK 46 void register_dock_dependent_device(struct acpi_device *adev, 47 acpi_handle dshandle); 48 int dock_notify(struct acpi_device *adev, u32 event); 49 void acpi_dock_add(struct acpi_device *adev); 50 #else 51 static inline void register_dock_dependent_device(struct acpi_device *adev, 52 acpi_handle dshandle) {} 53 static inline int dock_notify(struct acpi_device *adev, u32 event) { return -ENODEV; } 54 static inline void acpi_dock_add(struct acpi_device *adev) {} 55 #endif 56 #ifdef CONFIG_X86 57 void acpi_cmos_rtc_init(void); 58 #else 59 static inline void acpi_cmos_rtc_init(void) {} 60 #endif 61 int acpi_rev_override_setup(char *str); 62 63 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug, 64 const char *name); 65 int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler, 66 const char *hotplug_profile_name); 67 void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val); 68 69 #ifdef CONFIG_DEBUG_FS 70 extern struct dentry *acpi_debugfs_dir; 71 void acpi_debugfs_init(void); 72 #else 73 static inline void acpi_debugfs_init(void) { return; } 74 #endif 75 #ifdef CONFIG_PCI 76 void acpi_lpss_init(void); 77 #else 78 static inline void acpi_lpss_init(void) {} 79 #endif 80 81 void acpi_apd_init(void); 82 83 acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); 84 bool acpi_queue_hotplug_work(struct work_struct *work); 85 void acpi_device_hotplug(struct acpi_device *adev, u32 src); 86 bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); 87 88 acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context); 89 void acpi_scan_table_notify(void); 90 91 /* -------------------------------------------------------------------------- 92 Device Node Initialization / Removal 93 -------------------------------------------------------------------------- */ 94 #define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ 95 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) 96 97 extern struct list_head acpi_bus_id_list; 98 99 #define ACPI_MAX_DEVICE_INSTANCES 4096 100 101 struct acpi_device_bus_id { 102 const char *bus_id; 103 struct ida instance_ida; 104 struct list_head node; 105 }; 106 107 int acpi_device_add(struct acpi_device *device, 108 void (*release)(struct device *)); 109 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, 110 int type); 111 int acpi_device_setup_files(struct acpi_device *dev); 112 void acpi_device_remove_files(struct acpi_device *dev); 113 void acpi_device_add_finalize(struct acpi_device *device); 114 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); 115 bool acpi_device_is_present(const struct acpi_device *adev); 116 bool acpi_device_is_battery(struct acpi_device *adev); 117 bool acpi_device_is_first_physical_node(struct acpi_device *adev, 118 const struct device *dev); 119 int acpi_bus_register_early_device(int type); 120 121 /* -------------------------------------------------------------------------- 122 Device Matching and Notification 123 -------------------------------------------------------------------------- */ 124 struct acpi_device *acpi_companion_match(const struct device *dev); 125 int __acpi_device_uevent_modalias(struct acpi_device *adev, 126 struct kobj_uevent_env *env); 127 128 /* -------------------------------------------------------------------------- 129 Power Resource 130 -------------------------------------------------------------------------- */ 131 int acpi_power_init(void); 132 void acpi_power_resources_list_free(struct list_head *list); 133 int acpi_extract_power_resources(union acpi_object *package, unsigned int start, 134 struct list_head *list); 135 struct acpi_device *acpi_add_power_resource(acpi_handle handle); 136 void acpi_power_add_remove_device(struct acpi_device *adev, bool add); 137 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level); 138 int acpi_device_sleep_wake(struct acpi_device *dev, 139 int enable, int sleep_state, int dev_state); 140 int acpi_power_get_inferred_state(struct acpi_device *device, int *state); 141 int acpi_power_on_resources(struct acpi_device *device, int state); 142 int acpi_power_transition(struct acpi_device *device, int state); 143 void acpi_turn_off_unused_power_resources(void); 144 145 /* -------------------------------------------------------------------------- 146 Device Power Management 147 -------------------------------------------------------------------------- */ 148 int acpi_device_get_power(struct acpi_device *device, int *state); 149 int acpi_wakeup_device_init(void); 150 151 /* -------------------------------------------------------------------------- 152 Processor 153 -------------------------------------------------------------------------- */ 154 #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC 155 void acpi_early_processor_set_pdc(void); 156 #else 157 static inline void acpi_early_processor_set_pdc(void) {} 158 #endif 159 160 #ifdef CONFIG_X86 161 void acpi_early_processor_osc(void); 162 #else 163 static inline void acpi_early_processor_osc(void) {} 164 #endif 165 166 /* -------------------------------------------------------------------------- 167 Embedded Controller 168 -------------------------------------------------------------------------- */ 169 170 enum acpi_ec_event_state { 171 EC_EVENT_READY = 0, /* Event work can be submitted */ 172 EC_EVENT_IN_PROGRESS, /* Event work is pending or being processed */ 173 EC_EVENT_COMPLETE, /* Event work processing has completed */ 174 }; 175 176 struct acpi_ec { 177 acpi_handle handle; 178 int gpe; 179 int irq; 180 unsigned long command_addr; 181 unsigned long data_addr; 182 bool global_lock; 183 unsigned long flags; 184 unsigned long reference_count; 185 struct mutex mutex; 186 wait_queue_head_t wait; 187 struct list_head list; 188 struct transaction *curr; 189 spinlock_t lock; 190 struct work_struct work; 191 unsigned long timestamp; 192 enum acpi_ec_event_state event_state; 193 unsigned int events_to_process; 194 unsigned int events_in_progress; 195 unsigned int queries_in_progress; 196 bool busy_polling; 197 unsigned int polling_guard; 198 }; 199 200 extern struct acpi_ec *first_ec; 201 202 /* If we find an EC via the ECDT, we need to keep a ptr to its context */ 203 /* External interfaces use first EC only, so remember */ 204 typedef int (*acpi_ec_query_func) (void *data); 205 206 void acpi_ec_init(void); 207 void acpi_ec_ecdt_probe(void); 208 void acpi_ec_dsdt_probe(void); 209 void acpi_ec_block_transactions(void); 210 void acpi_ec_unblock_transactions(void); 211 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, 212 acpi_handle handle, acpi_ec_query_func func, 213 void *data); 214 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); 215 216 #ifdef CONFIG_PM_SLEEP 217 void acpi_ec_flush_work(void); 218 bool acpi_ec_dispatch_gpe(void); 219 #endif 220 221 222 /*-------------------------------------------------------------------------- 223 Suspend/Resume 224 -------------------------------------------------------------------------- */ 225 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT 226 extern bool acpi_s2idle_wakeup(void); 227 extern int acpi_sleep_init(void); 228 #else 229 static inline bool acpi_s2idle_wakeup(void) { return false; } 230 static inline int acpi_sleep_init(void) { return -ENXIO; } 231 #endif 232 233 #ifdef CONFIG_ACPI_SLEEP 234 void acpi_sleep_proc_init(void); 235 int suspend_nvs_alloc(void); 236 void suspend_nvs_free(void); 237 int suspend_nvs_save(void); 238 void suspend_nvs_restore(void); 239 #else 240 static inline void acpi_sleep_proc_init(void) {} 241 static inline int suspend_nvs_alloc(void) { return 0; } 242 static inline void suspend_nvs_free(void) {} 243 static inline int suspend_nvs_save(void) { return 0; } 244 static inline void suspend_nvs_restore(void) {} 245 #endif 246 247 #ifdef CONFIG_X86 248 bool force_storage_d3(void); 249 #else 250 static inline bool force_storage_d3(void) 251 { 252 return false; 253 } 254 #endif 255 256 /*-------------------------------------------------------------------------- 257 Device properties 258 -------------------------------------------------------------------------- */ 259 #define ACPI_DT_NAMESPACE_HID "PRP0001" 260 261 void acpi_init_properties(struct acpi_device *adev); 262 void acpi_free_properties(struct acpi_device *adev); 263 264 #ifdef CONFIG_X86 265 void acpi_extract_apple_properties(struct acpi_device *adev); 266 #else 267 static inline void acpi_extract_apple_properties(struct acpi_device *adev) {} 268 #endif 269 270 /*-------------------------------------------------------------------------- 271 Watchdog 272 -------------------------------------------------------------------------- */ 273 274 #ifdef CONFIG_ACPI_WATCHDOG 275 void acpi_watchdog_init(void); 276 #else 277 static inline void acpi_watchdog_init(void) {} 278 #endif 279 280 #ifdef CONFIG_ACPI_LPIT 281 void acpi_init_lpit(void); 282 #else 283 static inline void acpi_init_lpit(void) { } 284 #endif 285 286 #endif /* _ACPI_INTERNAL_H_ */ 287