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/*
* arch/arm/plat-spear/include/plat/padmux.h
*
* SPEAr platform specific gpio pads muxing file
*
* Copyright (C) 2009 ST Microelectronics
* Viresh Kumar<viresh.kumar@st.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __PLAT_PADMUX_H
#define __PLAT_PADMUX_H
#include <linux/types.h>
/*
* struct pmx_reg: configuration structure for mode reg and mux reg
*
* offset: offset of mode reg
* mask: mask of mode reg
*/
struct pmx_reg {
u32 offset;
u32 mask;
};
/*
* struct pmx_dev_mode: configuration structure every group of modes of a device
*
* ids: all modes for this configuration
* mask: mask for supported mode
*/
struct pmx_dev_mode {
u32 ids;
u32 mask;
};
/*
* struct pmx_mode: mode definition structure
*
* name: mode name
* mask: mode mask
*/
struct pmx_mode {
char *name;
u32 id;
u32 mask;
};
/*
* struct pmx_dev: device definition structure
*
* name: device name
* modes: device configuration array for different modes supported
* mode_count: size of modes array
* is_active: is peripheral active/enabled
* enb_on_reset: if 1, mask bits to be cleared in reg otherwise to be set in reg
*/
struct pmx_dev {
char *name;
struct pmx_dev_mode *modes;
u8 mode_count;
bool is_active;
bool enb_on_reset;
};
/*
* struct pmx_driver: driver definition structure
*
* mode: mode to be set
* devs: array of pointer to pmx devices
* devs_count: ARRAY_SIZE of devs
* base: base address of soc config registers
* mode_reg: structure of mode config register
* mux_reg: structure of device mux config register
*/
struct pmx_driver {
struct pmx_mode *mode;
struct pmx_dev **devs;
u8 devs_count;
u32 *base;
struct pmx_reg mode_reg;
struct pmx_reg mux_reg;
};
/* pmx functions */
int pmx_register(struct pmx_driver *driver);
#endif /* __PLAT_PADMUX_H */
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