82c7d5efaa
ACPI power resources need to be treated in a special way by the namespace scanning code, because they need to be ready to use as soon as they have been discovered (even before registering ACPI device nodes using them for power management). For this reason, it doesn't make sense to separate the preparation of struct acpi_device objects representing them in the device hierarchy from the creation of struct acpi_power_resource objects actually used for power resource manipulation. Accordingly, it doesn't make sense to define non-empty .add() and .remove() callbacks in the power resources "driver" (in fact, it is questionable whether or not it is useful to register such a "driver" at all). Rearrange the code in scan.c and power.c so that power resources are initialized entirely by one routine, acpi_add_power_resource(), that also prepares their struct acpi_device objects and registers them with the driver core, telling it to use a special release routine, acpi_release_power_resource(), for removing objects that represent power resources from memory. Make the ACPI namespace scanning code in scan.c always use acpi_add_power_resource() for preparing and registering objects that represent power resources. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
118 lines
4.2 KiB
C
118 lines
4.2 KiB
C
/*
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* acpi/internal.h
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* For use by Linux/ACPI infrastructure, not drivers
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*
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* Copyright (c) 2009, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _ACPI_INTERNAL_H_
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#define _ACPI_INTERNAL_H_
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#define PREFIX "ACPI: "
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int init_acpi_device_notify(void);
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int acpi_scan_init(void);
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int acpi_sysfs_init(void);
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#ifdef CONFIG_DEBUG_FS
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extern struct dentry *acpi_debugfs_dir;
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int acpi_debugfs_init(void);
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#else
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static inline void acpi_debugfs_init(void) { return; }
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#endif
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/* --------------------------------------------------------------------------
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Device Node Initialization / Removal
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-------------------------------------------------------------------------- */
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#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
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ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
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int acpi_device_register(struct acpi_device *device,
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void (*release)(struct device *));
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void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
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int type, unsigned long long sta);
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void acpi_free_ids(struct acpi_device *device);
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/* --------------------------------------------------------------------------
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Power Resource
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-------------------------------------------------------------------------- */
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int acpi_power_init(void);
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void acpi_add_power_resource(acpi_handle handle);
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void acpi_power_add_remove_device(struct acpi_device *adev, bool add);
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int acpi_device_sleep_wake(struct acpi_device *dev,
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int enable, int sleep_state, int dev_state);
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int acpi_power_get_inferred_state(struct acpi_device *device, int *state);
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int acpi_power_on_resources(struct acpi_device *device, int state);
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int acpi_power_transition(struct acpi_device *device, int state);
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int acpi_bus_init_power(struct acpi_device *device);
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int acpi_wakeup_device_init(void);
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void acpi_early_processor_set_pdc(void);
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/* --------------------------------------------------------------------------
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Embedded Controller
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-------------------------------------------------------------------------- */
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struct acpi_ec {
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acpi_handle handle;
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unsigned long gpe;
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unsigned long command_addr;
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unsigned long data_addr;
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unsigned long global_lock;
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unsigned long flags;
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struct mutex mutex;
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wait_queue_head_t wait;
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struct list_head list;
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struct transaction *curr;
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spinlock_t lock;
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};
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extern struct acpi_ec *first_ec;
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int acpi_pci_root_init(void);
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int acpi_ec_init(void);
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int acpi_ec_ecdt_probe(void);
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int acpi_boot_ec_enable(void);
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void acpi_ec_block_transactions(void);
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void acpi_ec_unblock_transactions(void);
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void acpi_ec_unblock_transactions_early(void);
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/*--------------------------------------------------------------------------
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Suspend/Resume
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-------------------------------------------------------------------------- */
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extern int acpi_sleep_init(void);
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#ifdef CONFIG_ACPI_SLEEP
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int acpi_sleep_proc_init(void);
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int suspend_nvs_alloc(void);
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void suspend_nvs_free(void);
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int suspend_nvs_save(void);
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void suspend_nvs_restore(void);
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#else
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static inline int acpi_sleep_proc_init(void) { return 0; }
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static inline int suspend_nvs_alloc(void) { return 0; }
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static inline void suspend_nvs_free(void) {}
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static inline int suspend_nvs_save(void) { return 0; }
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static inline void suspend_nvs_restore(void) {}
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#endif
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/*--------------------------------------------------------------------------
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Platform bus support
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-------------------------------------------------------------------------- */
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struct platform_device;
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struct platform_device *acpi_create_platform_device(struct acpi_device *adev);
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#endif /* _ACPI_INTERNAL_H_ */
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