diff options
Diffstat (limited to 'include/linux/pmu.h')
| -rw-r--r-- | include/linux/pmu.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/linux/pmu.h b/include/linux/pmu.h new file mode 100644 index 000000000..c677442d0 --- /dev/null +++ b/include/linux/pmu.h @@ -0,0 +1,90 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Definitions for talking to the PMU. The PMU is a microcontroller + * which controls battery charging and system power on PowerBook 3400 + * and 2400 models as well as the RTC and various other things. + * + * Copyright (C) 1998 Paul Mackerras. + */ +#ifndef _LINUX_PMU_H +#define _LINUX_PMU_H + +#include <linux/rtc.h> +#include <uapi/linux/pmu.h> + + +extern int __init find_via_pmu(void); + +extern int pmu_request(struct adb_request *req, + void (*done)(struct adb_request *), int nbytes, ...); +extern int pmu_queue_request(struct adb_request *req); +extern void pmu_poll(void); +extern void pmu_poll_adb(void); /* For use by xmon */ +extern void pmu_wait_complete(struct adb_request *req); + +/* For use before switching interrupts off for a long time; + * warning: not stackable + */ +#if defined(CONFIG_ADB_PMU) +extern void pmu_suspend(void); +extern void pmu_resume(void); +#else +static inline void pmu_suspend(void) +{} +static inline void pmu_resume(void) +{} +#endif + +extern void pmu_enable_irled(int on); + +extern time64_t pmu_get_time(void); +extern int pmu_set_rtc_time(struct rtc_time *tm); + +extern void pmu_restart(void); +extern void pmu_shutdown(void); +extern void pmu_unlock(void); + +extern int pmu_present(void); +extern int pmu_get_model(void); + +extern void pmu_backlight_set_sleep(int sleep); + +#define PMU_MAX_BATTERIES 2 + +/* values for pmu_power_flags */ +#define PMU_PWR_AC_PRESENT 0x00000001 + +/* values for pmu_battery_info.flags */ +#define PMU_BATT_PRESENT 0x00000001 +#define PMU_BATT_CHARGING 0x00000002 +#define PMU_BATT_TYPE_MASK 0x000000f0 +#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ +#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ +#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ + +struct pmu_battery_info +{ + unsigned int flags; + unsigned int charge; /* current charge */ + unsigned int max_charge; /* maximum charge */ + signed int amperage; /* current, positive if charging */ + unsigned int voltage; /* voltage */ + unsigned int time_remaining; /* remaining time */ +}; + +extern int pmu_battery_count; +extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; +extern unsigned int pmu_power_flags; + +/* Backlight */ +extern void pmu_backlight_init(void); + +/* some code needs to know if the PMU was suspended for hibernation */ +#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) +extern int pmu_sys_suspended; +#else +/* if power management is not configured it can't be suspended */ +#define pmu_sys_suspended 0 +#endif + +#endif /* _LINUX_PMU_H */ |