237 lines
7.9 KiB
C
237 lines
7.9 KiB
C
/****************************************************************************
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* include/nuttx/power/regulator.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 __INCLUDE_NUTTX_POWER_REGULATOR_H
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#define __INCLUDE_NUTTX_POWER_REGULATOR_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <nuttx/list.h>
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#include <nuttx/mutex.h>
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#include <nuttx/wqueue.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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struct regulator_dev_s;
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struct regulator_s
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{
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struct work_s disable_work;
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int min_uv;
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int max_uv;
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struct list_node list;
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struct regulator_dev_s *rdev;
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};
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struct regulator_ops_s
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{
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CODE int (*list_voltage)(FAR struct regulator_dev_s *rdev,
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unsigned int selector);
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CODE int (*set_voltage)(FAR struct regulator_dev_s *rdev, int min_uv,
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int max_uv, FAR unsigned int *selector);
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CODE int (*set_voltage_sel)(FAR struct regulator_dev_s *rdev,
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unsigned int selector);
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CODE int (*get_voltage)(FAR struct regulator_dev_s *rdev);
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CODE int (*get_voltage_sel)(FAR struct regulator_dev_s *rdev);
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CODE int (*enable)(FAR struct regulator_dev_s *rdev);
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CODE int (*is_enabled)(FAR struct regulator_dev_s *rdev);
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CODE int (*disable)(FAR struct regulator_dev_s *rdev);
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CODE int (*enable_pulldown)(FAR struct regulator_dev_s *rdev);
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CODE int (*disable_pulldown)(FAR struct regulator_dev_s *rdev);
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};
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/* This structure describes the regulators capabilities */
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struct regulator_desc_s
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{
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const char *name; /* Regulator output name */
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unsigned int id; /* Numerical id for a given regulator of
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* a device
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*/
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unsigned int n_voltages; /* Number of discrete voltages */
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unsigned int vsel_reg; /* Device register for voltage selection */
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unsigned int vsel_mask; /* Register mask, for voltage selection */
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unsigned int enable_reg; /* Device register for enable/disable */
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unsigned int enable_mask; /* Register mask for enable/disable */
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unsigned int enable_time; /* Time for initial enable of regulator */
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unsigned int ramp_delay; /* Rate of change for setting new voltage */
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unsigned int uv_step; /* Voltage per step if linear mapping_uv */
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unsigned int min_uv; /* Minimum acceptable voltage */
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unsigned int max_uv; /* Maximum acceptable voltage */
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unsigned int pulldown; /* Enable pulldown when disabled */
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unsigned int pulldown_reg; /* Device register, for pulldown enable */
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unsigned int pulldown_mask; /* Register mask, for pulldown enable */
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unsigned int apply_uv; /* If true, the voltage specifed (between) * min_uv and max_uv will be applied during
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* initialisation.
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*/
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unsigned int boot_on; /* true if this regulator is to be enabled
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* at power up/reset
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*/
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};
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struct regulator_dev_s
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{
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FAR const struct regulator_desc_s *desc;
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FAR const struct regulator_ops_s *ops;
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uint32_t use_count;
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uint32_t open_count;
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mutex_t regulator_lock;
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struct list_node list;
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struct list_node consumer_list;
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FAR void *priv;
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: regulator_register
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*
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* Description:
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* Register a lower half regulator driver with the common, upper-half
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* regulator driver.
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*
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* Input parameters:
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* desc - The regulator descriptor struct.
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* ops - The regulator operations pointer
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*
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* Returned value:
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* The pointer to struct regulator_dev_s on success or NULL on failure.
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*
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****************************************************************************/
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struct regulator_dev_s *
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regulator_register(FAR const struct regulator_desc_s *desc,
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FAR const struct regulator_ops_s *ops,
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FAR void *priv);
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/****************************************************************************
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* Name: regulator_unregister
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*
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* Description:
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* Unregister a lower half regulator driver with the common, upper-half
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* regulator driver.
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*
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* Input parameters:
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* rdev - The regulator dev pointer.
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*
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* Returned value:
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* N/A
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*
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****************************************************************************/
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void regulator_unregister(FAR struct regulator_dev_s *rdev);
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/****************************************************************************
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* Name: regulator_gpio_init
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*
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* Description:
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*
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* Input Parameters:
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*
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* iodev - The ioexpander dev pointer.
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* desc - The regulator desc pointer, must contain follow section
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* name - The regulator name.
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* enable_reg - The regulator gpio pin number.
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* enable_mask -
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* true : enable is high, disable is low
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* false: enable is low, disable is high
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*
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* Returned Value:
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*
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****************************************************************************/
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int regulator_gpio_init(FAR struct ioexpander_dev_s *iodev,
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FAR const struct regulator_desc_s *desc);
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#if defined(CONFIG_REGULATOR_RPMSG)
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/****************************************************************************
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* Name: regulator_rpmsg_get
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*
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* Description:
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*
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* Input Parameters:
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*
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* name - the name for register the rpmsg regulator dev
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*
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* Returned Value:
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*
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* Regulator dev pointer
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*
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****************************************************************************/
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FAR struct regulator_dev_s *regulator_rpmsg_get(FAR const char *name);
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/****************************************************************************
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* Name: regulator_rpmsg_server_init
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*
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* Description:
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*
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* Establish rpmsg channel for the operations of the remote regulator
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*
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* Input Parameters:
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno on failure
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*
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****************************************************************************/
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int regulator_rpmsg_server_init(void);
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __INCLUDE_NUTTX_POWER_REGULATOR_H */
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