mirror of
https://github.com/apache/nuttx.git
synced 2026-05-28 11:56:10 +08:00
Move SMPS driver to drivers/power (and header to include/nuttx/power). Rename debug to IOCTLs to more general power naming; create a separate file to coordinate power-related IOCTL commands.
This commit is contained in:
Gregory Nutt
@@ -232,6 +232,44 @@ config PM_SLEEPENTER_COUNT
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endif # PM
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menuconfig DRIVERS_SMPS
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bool "Switched-Mode Power Supply (SMPS)"
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default n
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---help---
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Enables building of an SMPS upper half driver.
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if DRIVERS_SMPS
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config SMPS_HAVE_OUTPUT_VOLTAGE
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bool "Have Output Voltage"
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default n
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config SMPS_HAVE_OUTPUT_CURRENT
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bool "Have Output Current"
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default n
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config SMPS_HAVE_OUTPUT_POWER
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bool "Have Output Power"
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default n
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config SMPS_HAVE_INPUT_VOLTAGE
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bool "Have Input Voltage"
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default n
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config SMPS_HAVE_INPUT_CURRENT
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bool "Have Input Current"
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default n
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config SMPS_HAVE_INPUT_POWER
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bool "Have Input Power"
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default n
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config SMPS_HAVE_EFFICIENCY
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bool "Have Power Efficiency"
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default n
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endif
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menuconfig POWER
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bool "Power Management Support"
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default n
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+13
-1
@@ -52,6 +52,18 @@ POWER_CFLAGS := ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$
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endif
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# Add switched-mode power supply support
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ifeq ($(CONFIG_DRIVERS_SMPS),y)
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CSRCS += smps.c
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POWER_DEPPATH := --dep-path power
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POWER_VPATH := :power
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POWER_CFLAGS := ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$(DELIM)power}
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endif
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# Add battery charger drivers
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ifeq ($(CONFIG_BATTERY_CHARGER),y)
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@@ -70,7 +82,7 @@ endif
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endif
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# Include battery suport in the build
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# Include power support in the build
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POWER_DEPPATH := --dep-path power
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POWER_VPATH := :power
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@@ -0,0 +1,398 @@
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/****************************************************************************
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* drivers/power/smps.c
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* Upper-half, character driver for SMPS (switched-mode power supply)
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Mateusz Szafoni <raiden00@railab.me>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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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 <sys/types.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <semaphore.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/semaphore.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/power/smps.h>
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#include <nuttx/irq.h>
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int smps_open(FAR struct file *filep);
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static int smps_close(FAR struct file *filep);
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static ssize_t smps_read(FAR struct file *filep, FAR char *buffer,
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size_t buflen);
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static ssize_t smps_write(FAR struct file *filep, FAR const char *buffer,
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size_t buflen);
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static int smps_ioctl(FAR struct file *filep, int cmd, unsigned long arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct file_operations smps_fops =
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{
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smps_open, /* open */
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smps_close, /* close */
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smps_read, /* read */
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smps_write, /* write */
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NULL, /* seek */
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smps_ioctl /* ioctl */
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#ifndef CONFIG_DISABLE_POLL
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, NULL /* poll */
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#endif
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#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
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, NULL /* unlink */
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#endif
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: smps_open
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*
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* Description:
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* This function is called whenever the SMPS device is opened.
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*
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****************************************************************************/
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static int smps_open(FAR struct file *filep)
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{
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FAR struct inode *inode = filep->f_inode;
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FAR struct smps_dev_s *dev = inode->i_private;
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uint8_t tmp;
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int ret = OK;
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/* If the port is the middle of closing, wait until the close is finished */
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if (sem_wait(&dev->closesem) != OK)
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{
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ret = -errno;
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}
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else
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{
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/* Increment the count of references to the device. If this the first
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* time that the driver has been opened for this device, then initialize
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* the device.
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*/
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tmp = dev->ocount + 1;
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if (tmp == 0)
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{
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/* More than 255 opens; uint8_t overflows to zero */
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ret = -EMFILE;
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}
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else
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{
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/* Check if this is the first time that the driver has been opened. */
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if (tmp == 1)
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{
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/* Yes.. perform one time hardware initialization. */
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irqstate_t flags = enter_critical_section();
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ret = dev->ops->setup(dev);
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if (ret == OK)
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{
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/* Save the new open count on success */
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dev->ocount = tmp;
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}
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leave_critical_section(flags);
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}
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}
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sem_post(&dev->closesem);
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}
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return OK;
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}
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/****************************************************************************
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* Name: smps_close
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*
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* Description:
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* This routine is called when the SMPS device is closed.
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* It waits for the last remaining data to be sent.
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*
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****************************************************************************/
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static int smps_close(FAR struct file *filep)
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{
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FAR struct inode *inode = filep->f_inode;
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FAR struct smps_dev_s *dev = inode->i_private;
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irqstate_t flags;
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int ret = OK;
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if (sem_wait(&dev->closesem) != OK)
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{
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ret = -errno;
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}
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else
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{
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/* Decrement the references to the driver. If the reference count will
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* decrement to 0, then uninitialize the driver.
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*/
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if (dev->ocount > 1)
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{
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dev->ocount--;
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sem_post(&dev->closesem);
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}
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else
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{
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/* There are no more references to the port */
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dev->ocount = 0;
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/* Free the IRQ and disable the SMPS device */
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flags = enter_critical_section(); /* Disable interrupts */
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dev->ops->shutdown(dev); /* Disable the SMPS */
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leave_critical_section(flags);
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sem_post(&dev->closesem);
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}
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}
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return ret;
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}
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/****************************************************************************
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* Name: smps_read
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****************************************************************************/
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static ssize_t smps_read(FAR struct file *filep, FAR char *buffer, size_t buflen)
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{
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return 1;
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}
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/****************************************************************************
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* Name: smps_write
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****************************************************************************/
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static ssize_t smps_write(FAR struct file *filep, FAR const char *buffer, size_t buflen)
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{
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return 1;
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}
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/****************************************************************************
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* Name: smps_ioctl
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****************************************************************************/
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static int smps_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
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{
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FAR struct inode *inode = filep->f_inode;
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FAR struct smps_dev_s *dev = inode->i_private;
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int ret;
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switch (cmd)
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{
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case PWRIOC_START:
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{
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/* TODO: sanity checking:
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* - absolute limits
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* - SMPS parameters
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* - SMPS mode
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*/
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ret = dev->ops->start(dev);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_START failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_STOP:
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{
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ret = dev->ops->stop(dev);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_STOP failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_SET_MODE:
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{
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uint8_t mode = ((uint8_t)arg);
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ret = dev->ops->mode_set(dev, mode);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_SET_MODE failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_SET_LIMITS:
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{
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FAR struct smps_limits_s *limits =
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(FAR struct smps_limits_s *)((uintptr_t)arg);
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/* TODO: lock mechanism */
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ret = dev->ops->limits_set(dev, limits);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_SET_LIMITS failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_GET_STATE:
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{
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FAR struct smps_state_s *state =
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(FAR struct smps_state_s *)((uintptr_t)arg);
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ret = dev->ops->state_get(dev, state);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_GET_STATE failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_SET_FAULT:
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{
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uint8_t fault = ((uint8_t)arg);
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ret = dev->ops->fault_set(dev, fault);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_SET_FAULT failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_GET_FAULT:
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{
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uint8_t *fault = ((uint8_t*)arg);
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ret = dev->ops->fault_get(dev, fault);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_GET_FAULT failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_CLEAN_FAULT:
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{
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uint8_t fault = ((uint8_t)arg);
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ret = dev->ops->fault_clean(dev, fault);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_CLEAN_FAULT failed %d\n", ret);
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}
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break;
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}
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case PWRIOC_SET_PARAMS:
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{
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FAR struct smps_params_s *params =
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(FAR struct smps_params_s *)((uintptr_t)arg);
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/* TODO: lock mechanism */
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/* TODO: limits */
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ret = dev->ops->params_set(dev, params);
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if (ret != OK)
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{
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pwrerr("ERROR: SMPSC_SET_PARAMS failed %d\n", ret);
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}
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break;
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}
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default:
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{
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pwrinfo("Forwarding unrecognized cmd: %d arg: %ld\n", cmd, arg);
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ret = dev->ops->ioctl(dev, cmd, arg);
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break;
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}
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: smps_register
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****************************************************************************/
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int smps_register(FAR const char *path, FAR struct smps_dev_s *dev, FAR void *lower)
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{
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int ret;
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/* Initialize the HRTIM device structure */
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dev->ocount = 0;
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/* Initialize semaphores */
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sem_init(&dev->closesem, 0, 1);
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/* Connect SMPS driver with lower level interface */
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dev->lower = lower;
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/* Register the SMPS character driver */
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ret = register_driver(path, &smps_fops, 0444, dev);
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if (ret < 0)
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{
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sem_destroy(&dev->closesem);
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}
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return ret;
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}
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Block a user