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 #define PREFIX "ACPI: " 15 16 int early_acpi_osi_init(void); 17 int acpi_osi_init(void); 18 acpi_status acpi_os_initialize1(void); 19 int 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 #ifdef CONFIG_ARM_AMBA 32 void acpi_amba_init(void); 33 #else 34 static inline void acpi_amba_init(void) {} 35 #endif 36 int acpi_sysfs_init(void); 37 void acpi_gpe_apply_masked_gpes(void); 38 void acpi_container_init(void); 39 void acpi_memory_hotplug_init(void); 40 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 41 void pci_ioapic_remove(struct acpi_pci_root *root); 42 int acpi_ioapic_remove(struct acpi_pci_root *root); 43 #else 44 static inline void pci_ioapic_remove(struct acpi_pci_root *root) { return; } 45 static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; } 46 #endif 47 #ifdef CONFIG_ACPI_DOCK 48 void register_dock_dependent_device(struct acpi_device *adev, 49 acpi_handle dshandle); 50 int dock_notify(struct acpi_device *adev, u32 event); 51 void acpi_dock_add(struct acpi_device *adev); 52 #else 53 static inline void register_dock_dependent_device(struct acpi_device *adev, 54 acpi_handle dshandle) {} 55 static inline int dock_notify(struct acpi_device *adev, u32 event) { return -ENODEV; } 56 static inline void acpi_dock_add(struct acpi_device *adev) {} 57 #endif 58 #ifdef CONFIG_X86 59 void acpi_cmos_rtc_init(void); 60 #else 61 static inline void acpi_cmos_rtc_init(void) {} 62 #endif 63 int acpi_rev_override_setup(char *str); 64 65 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug, 66 const char *name); 67 int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler, 68 const char *hotplug_profile_name); 69 void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val); 70 71 #ifdef CONFIG_DEBUG_FS 72 extern struct dentry *acpi_debugfs_dir; 73 void acpi_debugfs_init(void); 74 #else 75 static inline void acpi_debugfs_init(void) { return; } 76 #endif 77 #ifdef CONFIG_PCI 78 void acpi_lpss_init(void); 79 #else 80 static inline void acpi_lpss_init(void) {} 81 #endif 82 83 void acpi_apd_init(void); 84 85 acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); 86 bool acpi_queue_hotplug_work(struct work_struct *work); 87 void acpi_device_hotplug(struct acpi_device *adev, u32 src); 88 bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent); 89 90 acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context); 91 void acpi_scan_table_handler(u32 event, void *table, void *context); 92 93 /* -------------------------------------------------------------------------- 94 Device Node Initialization / Removal 95 -------------------------------------------------------------------------- */ 96 #define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ 97 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) 98 99 extern struct list_head acpi_bus_id_list; 100 101 #define ACPI_MAX_DEVICE_INSTANCES 4096 102 103 struct acpi_device_bus_id { 104 const char *bus_id; 105 struct ida instance_ida; 106 struct list_head node; 107 }; 108 109 int acpi_device_add(struct acpi_device *device, 110 void (*release)(struct device *)); 111 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, 112 int type); 113 int acpi_device_setup_files(struct acpi_device *dev); 114 void acpi_device_remove_files(struct acpi_device *dev); 115 void acpi_device_add_finalize(struct acpi_device *device); 116 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); 117 bool acpi_device_is_present(const struct acpi_device *adev); 118 bool acpi_device_is_battery(struct acpi_device *adev); 119 bool acpi_device_is_first_physical_node(struct acpi_device *adev, 120 const struct device *dev); 121 int acpi_bus_register_early_device(int type); 122 123 /* -------------------------------------------------------------------------- 124 Device Matching and Notification 125 -------------------------------------------------------------------------- */ 126 struct acpi_device *acpi_companion_match(const struct device *dev); 127 int __acpi_device_uevent_modalias(struct acpi_device *adev, 128 struct kobj_uevent_env *env); 129 130 /* -------------------------------------------------------------------------- 131 Power Resource 132 -------------------------------------------------------------------------- */ 133 int acpi_power_init(void); 134 void acpi_power_resources_list_free(struct list_head *list); 135 int acpi_extract_power_resources(union acpi_object *package, unsigned int start, 136 struct list_head *list); 137 int acpi_add_power_resource(acpi_handle handle); 138 void acpi_power_add_remove_device(struct acpi_device *adev, bool add); 139 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level); 140 int acpi_device_sleep_wake(struct acpi_device *dev, 141 int enable, int sleep_state, int dev_state); 142 int acpi_power_get_inferred_state(struct acpi_device *device, int *state); 143 int acpi_power_on_resources(struct acpi_device *device, int state); 144 int acpi_power_transition(struct acpi_device *device, int state); 145 void acpi_turn_off_unused_power_resources(void); 146 147 /* -------------------------------------------------------------------------- 148 Device Power Management 149 -------------------------------------------------------------------------- */ 150 int acpi_device_get_power(struct acpi_device *device, int *state); 151 int acpi_wakeup_device_init(void); 152 153 /* -------------------------------------------------------------------------- 154 Processor 155 -------------------------------------------------------------------------- */ 156 #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC 157 void acpi_early_processor_set_pdc(void); 158 #else 159 static inline void acpi_early_processor_set_pdc(void) {} 160 #endif 161 162 #ifdef CONFIG_X86 163 void acpi_early_processor_osc(void); 164 #else 165 static inline void acpi_early_processor_osc(void) {} 166 #endif 167 168 /* -------------------------------------------------------------------------- 169 Embedded Controller 170 -------------------------------------------------------------------------- */ 171 struct acpi_ec { 172 acpi_handle handle; 173 int gpe; 174 int irq; 175 unsigned long command_addr; 176 unsigned long data_addr; 177 bool global_lock; 178 unsigned long flags; 179 unsigned long reference_count; 180 struct mutex mutex; 181 wait_queue_head_t wait; 182 struct list_head list; 183 struct transaction *curr; 184 spinlock_t lock; 185 struct work_struct work; 186 unsigned long timestamp; 187 unsigned long nr_pending_queries; 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 /*-------------------------------------------------------------------------- 240 Device properties 241 -------------------------------------------------------------------------- */ 242 #define ACPI_DT_NAMESPACE_HID "PRP0001" 243 244 void acpi_init_properties(struct acpi_device *adev); 245 void acpi_free_properties(struct acpi_device *adev); 246 247 #ifdef CONFIG_X86 248 void acpi_extract_apple_properties(struct acpi_device *adev); 249 #else 250 static inline void acpi_extract_apple_properties(struct acpi_device *adev) {} 251 #endif 252 253 /*-------------------------------------------------------------------------- 254 Watchdog 255 -------------------------------------------------------------------------- */ 256 257 #ifdef CONFIG_ACPI_WATCHDOG 258 void acpi_watchdog_init(void); 259 #else 260 static inline void acpi_watchdog_init(void) {} 261 #endif 262 263 #ifdef CONFIG_ACPI_LPIT 264 void acpi_init_lpit(void); 265 #else 266 static inline void acpi_init_lpit(void) { } 267 #endif 268 269 #endif /* _ACPI_INTERNAL_H_ */ 270