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linux/drivers/acpi/internal.h
Arnd Bergmann a6021aa24f ACPI: EC: make EC support compile-time conditional 
The embedded controller code is mainly used on x86 laptops and cannot
work without PC style I/O port access.

Make this a user-visible configuration option that is default enabled
on x86 but otherwise disabled, and that can never be enabled unless
CONFIG_HAS_IOPORT is also available.

The empty stubs in internal.h help ignore the EC code in configurations
that don't support it. In order to see those stubs, the sbshc code also
has to include this header and drop duplicate declarations.

All the direct callers of ec_read/ec_write already had an x86
dependency and now also need to depend on APCI_EC.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patch.msgid.link/20241011061948.3211423-1-arnd@kernel.org
[ rjw: Subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-10-24 17:47:15 +02:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* acpi/internal.h
* For use by Linux/ACPI infrastructure, not drivers
*
* Copyright (c) 2009, Intel Corporation.
*/
#ifndef _ACPI_INTERNAL_H_
#define _ACPI_INTERNAL_H_
#include <linux/idr.h>
extern struct acpi_device *acpi_root;
int early_acpi_osi_init(void);
int acpi_osi_init(void);
acpi_status acpi_os_initialize1(void);
void acpi_scan_init(void);
#ifdef CONFIG_PCI
void acpi_pci_root_init(void);
void acpi_pci_link_init(void);
#else
static inline void acpi_pci_root_init(void) {}
static inline void acpi_pci_link_init(void) {}
#endif
void acpi_processor_init(void);
void acpi_platform_init(void);
void acpi_pnp_init(void);
void acpi_int340x_thermal_init(void);
int acpi_sysfs_init(void);
void acpi_gpe_apply_masked_gpes(void);
void acpi_container_init(void);
void acpi_memory_hotplug_init(void);
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
void pci_ioapic_remove(struct acpi_pci_root *root);
int acpi_ioapic_remove(struct acpi_pci_root *root);
#else
static inline void pci_ioapic_remove(struct acpi_pci_root *root) { return; }
static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; }
#endif
#ifdef CONFIG_ACPI_DOCK
void register_dock_dependent_device(struct acpi_device *adev,
acpi_handle dshandle);
int dock_notify(struct acpi_device *adev, u32 event);
void acpi_dock_add(struct acpi_device *adev);
#else
static inline void register_dock_dependent_device(struct acpi_device *adev,
acpi_handle dshandle) {}
static inline int dock_notify(struct acpi_device *adev, u32 event) { return -ENODEV; }
static inline void acpi_dock_add(struct acpi_device *adev) {}
#endif
#ifdef CONFIG_X86
void acpi_cmos_rtc_init(void);
#else
static inline void acpi_cmos_rtc_init(void) {}
#endif
int acpi_rev_override_setup(char *str);
void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
const char *name);
int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
const char *hotplug_profile_name);
void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val);
#ifdef CONFIG_DEBUG_FS
extern struct dentry *acpi_debugfs_dir;
void acpi_debugfs_init(void);
#else
static inline void acpi_debugfs_init(void) { return; }
#endif
#if defined(CONFIG_X86) && defined(CONFIG_PCI)
void acpi_lpss_init(void);
#else
static inline void acpi_lpss_init(void) {}
#endif
void acpi_apd_init(void);
acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src);
bool acpi_queue_hotplug_work(struct work_struct *work);
void acpi_device_hotplug(struct acpi_device *adev, u32 src);
bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent);
acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context);
void acpi_scan_table_notify(void);
int acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp);
int acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp);
int acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp);
int acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp);
#ifdef CONFIG_ARM64
int acpi_arch_thermal_cpufreq_pctg(void);
#else
static inline int acpi_arch_thermal_cpufreq_pctg(void)
{
return 0;
}
#endif
/* --------------------------------------------------------------------------
Device Node Initialization / Removal
-------------------------------------------------------------------------- */
#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
extern struct list_head acpi_bus_id_list;
struct acpi_device_bus_id {
const char *bus_id;
struct ida instance_ida;
struct list_head node;
};
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
int type, void (*release)(struct device *));
int acpi_tie_acpi_dev(struct acpi_device *adev);
int acpi_device_add(struct acpi_device *device);
void acpi_device_setup_files(struct acpi_device *dev);
void acpi_device_remove_files(struct acpi_device *dev);
extern const struct attribute_group *acpi_groups[];
void acpi_device_add_finalize(struct acpi_device *device);
void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
bool acpi_device_is_enabled(const struct acpi_device *adev);
bool acpi_device_is_present(const struct acpi_device *adev);
bool acpi_device_is_battery(struct acpi_device *adev);
bool acpi_device_is_first_physical_node(struct acpi_device *adev,
const struct device *dev);
int acpi_bus_register_early_device(int type);
/* --------------------------------------------------------------------------
Device Matching and Notification
-------------------------------------------------------------------------- */
const struct acpi_device *acpi_companion_match(const struct device *dev);
int __acpi_device_uevent_modalias(const struct acpi_device *adev,
struct kobj_uevent_env *env);
/* --------------------------------------------------------------------------
Power Resource
-------------------------------------------------------------------------- */
void acpi_power_resources_list_free(struct list_head *list);
int acpi_extract_power_resources(union acpi_object *package, unsigned int start,
struct list_head *list);
struct acpi_device *acpi_add_power_resource(acpi_handle handle);
void acpi_power_add_remove_device(struct acpi_device *adev, bool add);
int acpi_power_wakeup_list_init(struct list_head *list, int *system_level);
int acpi_device_sleep_wake(struct acpi_device *dev,
int enable, int sleep_state, int dev_state);
int acpi_power_get_inferred_state(struct acpi_device *device, int *state);
int acpi_power_on_resources(struct acpi_device *device, int state);
int acpi_power_transition(struct acpi_device *device, int state);
void acpi_turn_off_unused_power_resources(void);
/* --------------------------------------------------------------------------
Device Power Management
-------------------------------------------------------------------------- */
int acpi_device_get_power(struct acpi_device *device, int *state);
int acpi_wakeup_device_init(void);
/* --------------------------------------------------------------------------
Processor
-------------------------------------------------------------------------- */
#ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC
void acpi_early_processor_control_setup(void);
void acpi_early_processor_set_pdc(void);
#ifdef CONFIG_X86
void acpi_proc_quirk_mwait_check(void);
#else
static inline void acpi_proc_quirk_mwait_check(void) {}
#endif
bool processor_physically_present(acpi_handle handle);
#else
static inline void acpi_early_processor_control_setup(void) {}
#endif
/* --------------------------------------------------------------------------
Embedded Controller
-------------------------------------------------------------------------- */
enum acpi_ec_event_state {
EC_EVENT_READY = 0, /* Event work can be submitted */
EC_EVENT_IN_PROGRESS, /* Event work is pending or being processed */
EC_EVENT_COMPLETE, /* Event work processing has completed */
};
struct acpi_ec {
acpi_handle handle;
int gpe;
int irq;
unsigned long command_addr;
unsigned long data_addr;
bool global_lock;
unsigned long flags;
unsigned long reference_count;
struct mutex mutex;
wait_queue_head_t wait;
struct list_head list;
struct transaction *curr;
spinlock_t lock;
struct work_struct work;
unsigned long timestamp;
enum acpi_ec_event_state event_state;
unsigned int events_to_process;
unsigned int events_in_progress;
unsigned int queries_in_progress;
bool busy_polling;
unsigned int polling_guard;
};
extern struct acpi_ec *first_ec;
/* If we find an EC via the ECDT, we need to keep a ptr to its context */
/* External interfaces use first EC only, so remember */
typedef int (*acpi_ec_query_func) (void *data);
#ifdef CONFIG_ACPI_EC
void acpi_ec_init(void);
void acpi_ec_ecdt_probe(void);
void acpi_ec_dsdt_probe(void);
void acpi_ec_block_transactions(void);
void acpi_ec_unblock_transactions(void);
int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
acpi_handle handle, acpi_ec_query_func func,
void *data);
void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit);
void acpi_ec_register_opregions(struct acpi_device *adev);
#ifdef CONFIG_PM_SLEEP
void acpi_ec_flush_work(void);
bool acpi_ec_dispatch_gpe(void);
#endif
#else
static inline void acpi_ec_init(void) {}
static inline void acpi_ec_ecdt_probe(void) {}
static inline void acpi_ec_dsdt_probe(void) {}
static inline void acpi_ec_block_transactions(void) {}
static inline void acpi_ec_unblock_transactions(void) {}
static inline int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
acpi_handle handle, acpi_ec_query_func func,
void *data)
{
return -ENXIO;
}
static inline void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) {}
static inline void acpi_ec_register_opregions(struct acpi_device *adev) {}
static inline void acpi_ec_flush_work(void) {}
static inline bool acpi_ec_dispatch_gpe(void)
{
return false;
}
#endif
/*--------------------------------------------------------------------------
Suspend/Resume
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
extern bool acpi_s2idle_wakeup(void);
extern int acpi_sleep_init(void);
#else
static inline bool acpi_s2idle_wakeup(void) { return false; }
static inline int acpi_sleep_init(void) { return -ENXIO; }
#endif
#ifdef CONFIG_ACPI_SLEEP
void acpi_sleep_proc_init(void);
int suspend_nvs_alloc(void);
void suspend_nvs_free(void);
int suspend_nvs_save(void);
void suspend_nvs_restore(void);
#else
static inline void acpi_sleep_proc_init(void) {}
static inline int suspend_nvs_alloc(void) { return 0; }
static inline void suspend_nvs_free(void) {}
static inline int suspend_nvs_save(void) { return 0; }
static inline void suspend_nvs_restore(void) {}
#endif
#ifdef CONFIG_X86
bool force_storage_d3(void);
#else
static inline bool force_storage_d3(void)
{
return false;
}
#endif
/*--------------------------------------------------------------------------
Device properties
-------------------------------------------------------------------------- */
#define ACPI_DT_NAMESPACE_HID "PRP0001"
void acpi_init_properties(struct acpi_device *adev);
void acpi_free_properties(struct acpi_device *adev);
#ifdef CONFIG_X86
void acpi_extract_apple_properties(struct acpi_device *adev);
#else
static inline void acpi_extract_apple_properties(struct acpi_device *adev) {}
#endif
/*--------------------------------------------------------------------------
Watchdog
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_WATCHDOG
void acpi_watchdog_init(void);
#else
static inline void acpi_watchdog_init(void) {}
#endif
#ifdef CONFIG_ACPI_LPIT
void acpi_init_lpit(void);
#else
static inline void acpi_init_lpit(void) { }
#endif
/*--------------------------------------------------------------------------
ACPI _CRS CSI-2 and MIPI DisCo for Imaging
-------------------------------------------------------------------------- */
void acpi_mipi_check_crs_csi2(acpi_handle handle);
void acpi_mipi_scan_crs_csi2(void);
void acpi_mipi_init_crs_csi2_swnodes(void);
void acpi_mipi_crs_csi2_cleanup(void);
#ifdef CONFIG_X86
bool acpi_graph_ignore_port(acpi_handle handle);
#else
static inline bool acpi_graph_ignore_port(acpi_handle handle) { return false; }
#endif
#endif /* _ACPI_INTERNAL_H_ */
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