153 lines
3.9 KiB
C
153 lines
3.9 KiB
C
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/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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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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#ifndef __LINUX_PADCTRL_H
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#define __LINUX_PADCTRL_H
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#include <linux/device.h>
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#include <linux/of.h>
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struct padctrl;
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struct padctrl_dev;
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/*
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* padctrl_ops: Callback API to implement the padcontrol specific ops.
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*/
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struct padctrl_ops {
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int (*set_voltage)(struct padctrl_dev *pad_dev,
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int pad_id, u32 voltage);
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int (*get_voltage)(struct padctrl_dev *pad_dev,
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int pad_id, u32 *voltage);
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int (*power_enable)(struct padctrl_dev *pad_dev, int pad_id);
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int (*power_disable)(struct padctrl_dev *pad_dev, int pad_id);
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};
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/*
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* padctrl_desc: Padcontrol description describe the HW behavior.
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*/
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struct padctrl_desc {
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const char *name;
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struct padctrl_ops *ops;
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};
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/*
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* padctrl_confif: Padcontrol configuration.
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*/
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struct padctrl_config {
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const char *name;
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struct device_node *of_node;
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};
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#ifdef CONFIG_PADCTRL
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extern struct padctrl *padctrl_get(struct device *dev, const char *name);
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extern void padctrl_put(struct padctrl *pctrl);
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extern struct padctrl *devm_padctrl_get(struct device *dev, const char *name);
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extern struct padctrl *devm_padctrl_get_from_node(struct device *dev,
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struct device_node *np,
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const char *name);
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extern int padctrl_set_voltage(struct padctrl *pctrl, u32 voltage);
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extern int padctrl_get_voltage(struct padctrl *pctrl, u32 *voltage);
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extern int padctrl_power_enable(struct padctrl *pctrl);
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extern int padctrl_power_disable(struct padctrl *pctrl);
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extern struct padctrl_dev *padctrl_register(struct device *dev,
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struct padctrl_desc *desc, struct padctrl_config *config);
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extern void padctrl_unregister(struct padctrl_dev *pad_dev);
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extern struct padctrl_dev *devm_padctrl_register(struct device *dev,
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struct padctrl_desc *desc, struct padctrl_config *config);
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extern void devm_padctrl_unregister(struct device *dev,
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struct padctrl_dev *pad_dev);
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extern void padctrl_set_drvdata(struct padctrl_dev *pad_dev, void *drv_data);
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extern void *padctrl_get_drvdata(struct padctrl_dev *pad_dev);
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#else
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static inline struct padctrl *padctrl_get(struct device *dev,
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const char *name)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline void *padctrl_put(struct padctrl *pctrl)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline struct padctrl *devm_padctrl_get(struct device *dev,
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const char *name)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline struct padctrl *devm_padctrl_get_from_node(struct device *dev,
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struct device_node *np, const char *name)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline int padctrl_set_voltage(struct padctrl *pctrl, u32 voltage)
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{
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return -EINVAL;
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}
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static inline int padctrl_get_voltage(struct padctrl *ctrl, u32 *voltage)
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{
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return -EINVAL;
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}
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static inline int padctrl_power_enable(struct padctrl *pctrl)
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{
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return -EINVAL;
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}
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static inline int padctrl_power_disable(struct padctrl *pctrl)
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{
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return -EINVAL;
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}
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static inline struct padctrl_dev *padctrl_register(struct device *dev,
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struct padctrl_desc *desc, struct padctrl_config *config)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline void padctrl_unregister(struct padctrl_dev *pad_dev)
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{
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}
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static inline struct padctrl_dev *devm_padctrl_register(struct device *dev,
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struct padctrl_desc *desc, struct padctrl_config *config)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline void devm_padctrl_unregister(struct device *dev,
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struct padctrl_dev *pad_dev)
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{
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}
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static inline void padctrl_set_drvdata(struct padctrl_dev *pad_dev,
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void *drv_data)
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{
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}
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static inline void *padctrl_get_drvdata(struct padctrl_dev *pad_dev)
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{
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return NULL;
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}
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#endif
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#endif
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