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