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expand cordic_register to math_register 

Signed-off-by: xiajizhong <xiajizhong@xiaomi.com>
This commit is contained in:
xiajizhong 2023-06-15 11:13:24 +08:00 committed by Xiang Xiao
parent d8b045fa6a
commit f922f4cc61
3 changed files with 122 additions and 67 deletions
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2
drivers/math/Make.defs
View File

@ -21,7 +21,7 @@
# Include CORDIC support
ifeq ($(CONFIG_MATH_CORDIC),y)
CSRCS += cordic.c
CSRCS += math.c
endif
# Include build support

128
drivers/math/cordic.c → drivers/math/math.c
View File

@ -1,5 +1,5 @@
/****************************************************************************
* drivers/math/cordic.c
* drivers/math/math.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
@ -22,24 +22,13 @@
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/fs/fs.h>
#include <nuttx/irq.h>
#include <nuttx/kmalloc.h>
#include <nuttx/semaphore.h>
#include <nuttx/math/math.h>
#include <nuttx/math/math_ioctl.h>
#include <nuttx/math/cordic.h>
/****************************************************************************
* Pre-processor Definitions
@ -51,34 +40,31 @@
/* This structure describes the state of the upper half driver */
struct cordic_upperhalf_s
{
FAR struct cordic_lowerhalf_s *lower;
};
typedef struct math_config_s math_upperhalf_s;
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static ssize_t cordic_read(FAR struct file *filep, FAR char *buffer,
size_t buflen);
static ssize_t cordic_write(FAR struct file *filep, FAR const char *buffer,
size_t buflen);
static int cordic_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
static ssize_t math_read(FAR struct file *filep, FAR char *buffer,
size_t buflen);
static ssize_t math_write(FAR struct file *filep, FAR const char *buffer,
size_t buflen);
static int math_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
/****************************************************************************
* Private Data
****************************************************************************/
static const struct file_operations g_cordicops =
static const struct file_operations g_math_ops =
{
NULL, /* open */
NULL, /* close */
cordic_read, /* read */
cordic_write, /* write */
math_read, /* read */
math_write, /* write */
NULL, /* seek */
cordic_ioctl, /* ioctl */
math_ioctl, /* ioctl */
};
/****************************************************************************
@ -86,14 +72,14 @@ static const struct file_operations g_cordicops =
****************************************************************************/
/****************************************************************************
* Name: cordic_read
* Name: math_read
*
* Description:
* A dummy read method. This is provided only to satisfy the VFS layer.
*
****************************************************************************/
static ssize_t cordic_read(FAR struct file *filep, FAR char *buffer,
static ssize_t math_read(FAR struct file *filep, FAR char *buffer,
size_t buflen)
{
/* Return zero -- usually meaning end-of-file */
@ -102,41 +88,38 @@ static ssize_t cordic_read(FAR struct file *filep, FAR char *buffer,
}
/****************************************************************************
* Name: cordic_write
* Name: math_write
*
* Description:
* A dummy write method. This is provided only to satisfy the VFS layer.
*
****************************************************************************/
static ssize_t cordic_write(FAR struct file *filep, FAR const char *buffer,
static ssize_t math_write(FAR struct file *filep, FAR const char *buffer,
size_t buflen)
{
return 0;
}
/****************************************************************************
* Name: cordic_ioctl
* Name: math_ioctl
*
* Description:
* The standard ioctl method. This is where ALL of the cordic timer
* The standard ioctl method. This is where ALL of the math timer
* work is done.
*
****************************************************************************/
static int cordic_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
static int math_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
FAR struct inode *inode = filep->f_inode;
FAR struct cordic_upperhalf_s *upper = NULL;
FAR struct cordic_lowerhalf_s *lower = NULL;
int ret = 0;
FAR struct inode *inode = filep->f_inode;
FAR math_upperhalf_s *upper = inode->i_private;
int ret = -ENOTTY;
irqstate_t flags;
_info("cmd: %d arg: %lu\n", cmd, arg);
upper = inode->i_private;
DEBUGASSERT(upper != NULL);
lower = upper->lower;
DEBUGASSERT(lower != NULL);
_info("cmd: %d arg: %lu\n", cmd, arg);
flags = enter_critical_section();
@ -149,16 +132,10 @@ static int cordic_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
FAR struct cordic_calc_s *calc =
(FAR struct cordic_calc_s *)((uintptr_t)arg);
ret = lower->ops->calc(lower, calc);
break;
}
/* Not supported */
default:
{
ret = -ENOTTY;
if (upper->cordic != NULL)
{
ret = upper->cordic->ops->calc(upper->cordic, calc);
}
break;
}
@ -174,45 +151,64 @@ static int cordic_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
****************************************************************************/
/****************************************************************************
* Name: cordic_register
* Name: math_register
*
* Description:
* Register a CORDIC driver.
* Register a math driver.
*
****************************************************************************/
int cordic_register(FAR const char *path,
FAR struct cordic_lowerhalf_s *lower)
int math_register(FAR const char *path,
FAR const struct math_config_s *config)
{
FAR struct cordic_upperhalf_s *upper = NULL;
int ret = OK;
FAR math_upperhalf_s *upper = NULL;
int ret = -ENOMEM;
DEBUGASSERT(path);
DEBUGASSERT(lower);
DEBUGASSERT(config);
/* Allocate the upper-half data structure */
upper = (FAR struct cordic_upperhalf_s *)
kmm_zalloc(sizeof(struct cordic_upperhalf_s));
upper = (FAR math_upperhalf_s *)
kmm_malloc(sizeof(math_upperhalf_s));
if (!upper)
{
_err("Upper half allocation failed\n");
goto errout;
}
/* Initialize the CORDIC device structure */
/* Initialize the math device structure */
upper->lower = lower;
memcpy(upper, config, sizeof(math_upperhalf_s));
/* Register the cordic timer device */
/* Register the math timer device */
ret = register_driver(path, &g_cordicops, 0666, upper);
ret = register_driver(path, &g_math_ops, 0666, upper);
if (ret < 0)
{
_err("register_driver failed: %d\n", ret);
_err("register math driver failed: %d\n", ret);
kmm_free(upper);
}
errout:
return ret;
}
/****************************************************************************
* Name: cordic_register
*
* Description:
* Register a CORDIC driver. Deprecated, use math_register instead!
*
****************************************************************************/
int cordic_register(FAR const char *path,
FAR struct cordic_lowerhalf_s *lower)
{
struct math_config_s config;
memset(&config, 0, sizeof(config));
config.cordic = lower;
return math_register(path, &config);
}

59
include/nuttx/math/math.h Normal file
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@ -0,0 +1,59 @@
/****************************************************************************
* include/nuttx/math/math.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_MATH_MATH_H
#define __INCLUDE_NUTTX_MATH_MATH_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/math/cordic.h>
/****************************************************************************
* Public Types
****************************************************************************/
/* This math config struct provides the all "lower half" of math drivers.
* Each will have an internal structure definition that will be
* cast-compatible with this structure definitions.
*/
struct math_config_s
{
FAR struct cordic_lowerhalf_s *cordic;
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: math_register
*
* Description:
* Register all math related drivers.
*
****************************************************************************/
int math_register(FAR const char *path,
FAR const struct math_config_s *config);
#endif /* __INCLUDE_NUTTX_MATH_MATH_H */