/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #ifndef __MSM_MPM_IRQ_H #define __MSM_MPM_IRQ_H #include #include #define MSM_MPM_NR_MPM_IRQS 64 #if defined(CONFIG_MSM_MPM_OF) /** * msm_mpm_enable_pin() - Enable/Disable a MPM pin for idle wakeups. * * @pin: MPM pin to set * @enable: enable/disable the pin * * returns 0 on success or errorno * * Drivers can call the function to configure MPM pins for wakeup from idle low * power modes. The API provides a direct access to the configuring MPM pins * that are not connected to a IRQ/GPIO */ int msm_mpm_enable_pin(unsigned int pin, unsigned int enable); /** * msm_mpm_set_pin_wake() - Enable/Disable a MPM pin during suspend * * @pin: MPM pin to set * @enable: enable/disable the pin as wakeup * * returns 0 on success or errorno * * Drivers can call the function to configure MPM pins for wakeup from suspend * low power modes. The API provides a direct access to the configuring MPM pins * that are not connected to a IRQ/GPIO */ int msm_mpm_set_pin_wake(unsigned int pin, unsigned int on); /** * msm_mpm_set_pin_type() - Set the flowtype of a MPM pin. * * @pin: MPM pin to configure * @flow_type: flowtype of the MPM pin. * * returns 0 on success or errorno * * Drivers can call the function to configure the flowtype of the MPM pins * The API provides a direct access to the configuring MPM pins that are not * connected to a IRQ/GPIO */ int msm_mpm_set_pin_type(unsigned int pin, unsigned int flow_type); /** * msm_mpm_irqs_detectable() - Check if active irqs can be monitored by MPM * * @from_idle: indicates if the sytem is entering low power mode as a part of * suspend/idle task. * * returns true if all active interrupts can be monitored by the MPM * * Low power management code calls into this API to check if all active * interrupts can be monitored by MPM and choose a level such that all active * interrupts can wake the system up from low power mode. */ bool msm_mpm_irqs_detectable(bool from_idle); /** * msm_mpm_gpio_detectable() - Check if active gpio irqs can be monitored by * MPM * * @from_idle: indicates if the sytem is entering low power mode as a part of * suspend/idle task. * * returns true if all active GPIO interrupts can be monitored by the MPM * * Low power management code calls into this API to check if all active * GPIO interrupts can be monitored by MPM and choose a level such that all * active interrupts can wake the system up from low power mode. */ bool msm_mpm_gpio_irqs_detectable(bool from_idle); /** * msm_mpm_enter_sleep() -Called from PM code before entering low power mode * * @sclk_count: wakeup time in sclk counts for programmed RPM wakeup * @from_idle: indicates if the sytem is entering low power mode as a part of * suspend/idle task. * @cpumask: the next cpu to wakeup. * * Low power management code calls into this API to configure the MPM to * monitor the active irqs before going to sleep. */ void msm_mpm_enter_sleep(uint32_t sclk_count, bool from_idle, const struct cpumask *cpumask); /** * msm_mpm_exit_sleep() -Called from PM code after resuming from low power mode * * @from_idle: indicates if the sytem is entering low power mode as a part of * suspend/idle task. * * Low power management code calls into this API to query the MPM for the * wakeup source and retriggering the appropriate interrupt. */ void msm_mpm_exit_sleep(bool from_idle); /** * of_mpm_init() - Device tree initialization function * * The initialization function is called after * GPIO/GIC device initialization * routines are called and before any device irqs are requested. MPM driver * keeps track of all enabled/wakeup interrupts in the system to be able to * configure MPM when entering a system wide low power mode. The MPM is a * alway-on low power hardware block that monitors 64 wakeup interrupts when the * system is in a low power mode. The initialization function constructs the MPM * mapping between the IRQs and the MPM pin based on data in the device tree. */ void of_mpm_init(void); #else static inline int msm_mpm_enable_irq(unsigned int irq, unsigned int enable) { return -ENODEV; } static inline int msm_mpm_set_irq_wake(unsigned int irq, unsigned int on) { return -ENODEV; } static inline int msm_mpm_set_irq_type(unsigned int irq, unsigned int flow_type) { return -ENODEV; } static inline int msm_mpm_enable_pin(unsigned int pin, unsigned int enable) { return -ENODEV; } static inline int msm_mpm_set_pin_wake(unsigned int pin, unsigned int on) { return -ENODEV; } static inline int msm_mpm_set_pin_type(unsigned int pin, unsigned int flow_type) { return -ENODEV; } static inline bool msm_mpm_irqs_detectable(bool from_idle) { return false; } static inline bool msm_mpm_gpio_irqs_detectable(bool from_idle) { return false; } static inline void msm_mpm_enter_sleep(uint32_t sclk_count, bool from_idle, const struct cpumask *cpumask) {} static inline void msm_mpm_exit_sleep(bool from_idle) {} static inline void of_mpm_init(void) {} #endif #ifdef CONFIG_MSM_MPM_OF /** msm_mpm_suspend_prepare() - Called at prepare_late() op during suspend * * * When called the MPM driver checks if the wakeup interrupts can be monitored * by MPM hardware and program them accordingly. If wake up interrupts cannot * be monitored then it disallows system low power modes. */ void msm_mpm_suspend_prepare(void); /** msm_mpm_suspend_wake - Called during wake() op in suspend. * * When called MPM drivers sets the vote for system low power modes depending * on the active interrupts. */ void msm_mpm_suspend_wake(void); #else static inline void msm_mpm_suspend_prepare(void) {} static inline void msm_mpm_suspend_wake(void) {} #endif #endif /* __MSM_MPM_IRQ_H */