88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
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/****************************************************************************
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* drivers/regmap/internal.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __DRIVERS_REGMAP_INTERNAL_H
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#define __DRIVERS_REGMAP_INTERNAL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/regmap/regmap.h>
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#include <nuttx/mutex.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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typedef CODE void (*regmap_lock_t)(FAR void *);
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typedef CODE void (*regmap_unlock_t)(FAR void *);
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/* Configuration for the register map of a device.
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* This structure is only used inside regmap.
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*/
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struct regmap_s
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{
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regmap_lock_t lock;
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regmap_unlock_t unlock;
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bool disable_locking;
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/* Number of bits in a register address, from regmap_config_s. */
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int reg_bytes;
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/* Number of bits in a register value, from regmap_config_s. */
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int val_bytes;
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/* Device bus interface, used internally. */
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FAR struct regmap_bus_s *bus;
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/* Regmap bus control handle.
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* reg_read_t/reg_write_t single-byte register reading.
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* read_t/write_t block data reading.
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* Note:The transmitted data must be in a data format supported by the bus.
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*/
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reg_read_t reg_read;
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reg_write_t reg_write;
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read_t read;
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write_t write;
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/* The register address stride. Valid register addresses are a multiple
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* of this value. If set to 0, a value of 1 will be used.
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*/
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int reg_stride;
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/* Prevent fragmentation */
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mutex_t mutex[0];
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};
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#endif /* __DRIVERS_REGMAP_INTERNAL_H */
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