/* * Copyright (c) 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 __QCOM_GDSC_H__ #define __QCOM_GDSC_H__ #include <linux/err.h> #include <linux/pm_domain.h> struct regmap; struct reset_controller_dev; /** * struct gdsc - Globally Distributed Switch Controller * @pd: generic power domain * @regmap: regmap for MMIO accesses * @gdscr: gsdc control register * @gds_hw_ctrl: gds_hw_ctrl register * @cxcs: offsets of branch registers to toggle mem/periph bits in * @cxc_count: number of @cxcs * @pwrsts: Possible powerdomain power states * @resets: ids of resets associated with this gdsc * @reset_count: number of @resets * @rcdev: reset controller */ struct gdsc { struct generic_pm_domain pd; struct generic_pm_domain *parent; struct regmap *regmap; unsigned int gdscr; unsigned int gds_hw_ctrl; unsigned int clamp_io_ctrl; unsigned int *cxcs; unsigned int cxc_count; const u8 pwrsts; /* Powerdomain allowable state bitfields */ #define PWRSTS_OFF BIT(0) #define PWRSTS_RET BIT(1) #define PWRSTS_ON BIT(2) #define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON) #define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON) const u8 flags; #define VOTABLE BIT(0) #define CLAMP_IO BIT(1) #define HW_CTRL BIT(2) struct reset_controller_dev *rcdev; unsigned int *resets; unsigned int reset_count; }; struct gdsc_desc { struct device *dev; struct gdsc **scs; size_t num; }; #ifdef [31mCONFIG_QCOM_GDSC[0m int gdsc_register(struct gdsc_desc *desc, struct reset_controller_dev *, struct regmap *); void gdsc_unregister(struct gdsc_desc *desc); #else static inline int gdsc_register(struct gdsc_desc *desc, struct reset_controller_dev *rcdev, struct regmap *r) { return -ENOSYS; } static inline void gdsc_unregister(struct gdsc_desc *desc) {}; #endif /* CONFIG_QCOM_GDSC */ #endif /* __QCOM_GDSC_H__ */ |