forked from mirrors/linux
7da1d1ddd1
Make `find_via_cuda` and `find_via_pmu` initialization functions. Previously, their definitions in `drivers/macintosh/via-cuda.h` include the `__init` attribute but their alternative definitions in `arch/powerpc/powermac/sectup./c` and prototypes in `include/linux/ cuda.h` and `include/linux/pmu.h` do not use the `__init` macro. Since, only initialization functions call `find_via_cuda` and `find_via_pmu` it is safe to label these functions with `__init`. Signed-off-by: Nick Child <nick.child@ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211216220035.605465-21-nick.child@ibm.com
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Definitions for talking to the PMU. The PMU is a microcontroller
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* which controls battery charging and system power on PowerBook 3400
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* and 2400 models as well as the RTC and various other things.
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*
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* Copyright (C) 1998 Paul Mackerras.
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*/
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#ifndef _LINUX_PMU_H
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#define _LINUX_PMU_H
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#include <linux/rtc.h>
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#include <uapi/linux/pmu.h>
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extern int __init find_via_pmu(void);
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extern int pmu_request(struct adb_request *req,
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void (*done)(struct adb_request *), int nbytes, ...);
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extern int pmu_queue_request(struct adb_request *req);
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extern void pmu_poll(void);
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extern void pmu_poll_adb(void); /* For use by xmon */
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extern void pmu_wait_complete(struct adb_request *req);
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/* For use before switching interrupts off for a long time;
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* warning: not stackable
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*/
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#if defined(CONFIG_ADB_PMU)
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extern void pmu_suspend(void);
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extern void pmu_resume(void);
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#else
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static inline void pmu_suspend(void)
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{}
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static inline void pmu_resume(void)
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{}
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#endif
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extern void pmu_enable_irled(int on);
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extern time64_t pmu_get_time(void);
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extern int pmu_set_rtc_time(struct rtc_time *tm);
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extern void pmu_restart(void);
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extern void pmu_shutdown(void);
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extern void pmu_unlock(void);
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extern int pmu_present(void);
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extern int pmu_get_model(void);
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extern void pmu_backlight_set_sleep(int sleep);
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#define PMU_MAX_BATTERIES 2
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/* values for pmu_power_flags */
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#define PMU_PWR_AC_PRESENT 0x00000001
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/* values for pmu_battery_info.flags */
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#define PMU_BATT_PRESENT 0x00000001
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#define PMU_BATT_CHARGING 0x00000002
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#define PMU_BATT_TYPE_MASK 0x000000f0
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#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */
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#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */
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#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */
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struct pmu_battery_info
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{
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unsigned int flags;
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unsigned int charge; /* current charge */
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unsigned int max_charge; /* maximum charge */
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signed int amperage; /* current, positive if charging */
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unsigned int voltage; /* voltage */
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unsigned int time_remaining; /* remaining time */
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};
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extern int pmu_battery_count;
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extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
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extern unsigned int pmu_power_flags;
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/* Backlight */
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extern void pmu_backlight_init(void);
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/* some code needs to know if the PMU was suspended for hibernation */
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#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
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extern int pmu_sys_suspended;
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#else
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/* if power management is not configured it can't be suspended */
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#define pmu_sys_suspended 0
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#endif
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#endif /* _LINUX_PMU_H */
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