master.c 文件参考

玄武设备栈：I2C：主机 更多...

#include <xwcd/ds/standard.h>
#include <xwos/osal/lock/mtx.h>
#include <xwcd/ds/i2c/master.h>

master.c 的引用(Include)关系图:

浏览源代码.

函数
static xwer_t	xwds_i2cm_vop_probe (struct xwds_i2cm *i2cm)
	XWDS VOP：探测I2C主机控制器
static xwer_t	xwds_i2cm_vop_remove (struct xwds_i2cm *i2cm)
	XWDS VOP：移除I2C主机控制器
static xwer_t	xwds_i2cm_vop_start (struct xwds_i2cm *i2cm)
	XWDS VOP：启动I2C主机控制器
static xwer_t	xwds_i2cm_vop_stop (struct xwds_i2cm *i2cm)
	XWDS VOP：停止I2C主机控制器
static xwer_t	xwds_i2cm_vop_suspend (struct xwds_i2cm *i2cm)
	XWDS VOP：暂停I2C主机控制器
static xwer_t	xwds_i2cm_vop_resume (struct xwds_i2cm *i2cm)
	XWDS VOP：继续I2C主机控制器
void	xwds_i2cm_construct (struct xwds_i2cm *i2cm)
	XWDS API：I2C主机控制器的构造函数
void	xwds_i2cm_destruct (struct xwds_i2cm *i2cm)
	XWDS API：I2C主机控制器对象的析构函数
xwer_t	xwds_i2cm_grab (struct xwds_i2cm *i2cm)
	XWDS API：增加对象的引用计数
xwer_t	xwds_i2cm_put (struct xwds_i2cm *i2cm)
	XWDS API：减少对象的引用计数
xwer_t	xwds_i2cm_xfer (struct xwds_i2cm *i2cm, struct xwds_i2c_msg *msg, xwtm_t to)
	XWDS API：传输I2C消息
xwer_t	xwds_i2cm_abort (struct xwds_i2cm *i2cm, xwu16_t address, xwu16_t addrmode, xwtm_t to)
	XWDS API：中止I2C总线传输

变量
const struct xwds_virtual_operation	xwds_i2cm_vop

详细描述

玄武设备栈：I2C：主机

作者

• 隐星魂 (Roy Sun) xwos@.nosp@m.xwos.nosp@m..tech

版权所有

• Copyright © 2015 xwos.tech, All Rights Reserved.

  ‍Licensed 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.

在文件 master.c 中定义.

函数说明

xwds_i2cm_vop_probe()

static xwer_t xwds_i2cm_vop_probe ( struct xwds_i2cm *  i2cm )

static

XWDS VOP：探测I2C主机控制器

参数

[in]

i2cm

I2C主机控制器对象指针

返回

错误码

<No error

在文件 master.c 第 89 行定义.

{
        xwer_t rc;
 
        XWDS_VALIDATE(i2cm->xwccfg, "nullptr", -EFAULT);
 
        rc = xwos_mtx_init(&i2cm->xfer.apimtx, XWOS_SKD_PRIORITY_RT_MIN);
        if (rc < 0) {
                goto err_xfer_mtx_init;
        }
        rc = xwos_mtx_init(&i2cm->abort.apimtx, XWOS_SKD_PRIORITY_RT_MIN);
        if (rc < 0) {
                goto err_abort_mtx_init;
        }
        rc = xwds_device_vop_probe(&i2cm->dev);
        if (rc < 0) {
                goto err_dev_vop_probe;
        }
        return XWOK;
 
err_dev_vop_probe:
        xwos_mtx_fini(&i2cm->abort.apimtx);
err_abort_mtx_init:
        xwos_mtx_fini(&i2cm->xfer.apimtx);
err_xfer_mtx_init:
        return rc;
}

函数调用图:

xwds_i2cm_vop_remove()

static xwer_t xwds_i2cm_vop_remove ( struct xwds_i2cm *  i2cm )

static

XWDS VOP：移除I2C主机控制器

参数

[in]	ds	设备栈控制块指针
[in]	i2cm	I2C主机控制器对象指针

返回

错误码

<No error

在文件 master.c 第 124 行定义.

{
        xwer_t rc;
 
        rc = xwds_device_vop_remove(&i2cm->dev);
        if (rc < 0) {
                goto err_dev_vop_remove;
        }
        xwos_mtx_fini(&i2cm->abort.apimtx);
        xwos_mtx_fini(&i2cm->xfer.apimtx);
        return XWOK;
 
err_dev_vop_remove:
        return rc;
}

函数调用图:

xwds_i2cm_vop_resume()

static xwer_t xwds_i2cm_vop_resume ( struct xwds_i2cm *  i2cm )

static

XWDS VOP：继续I2C主机控制器

参数

[in]

i2cm

I2C主机控制器对象指针

返回

错误码

在文件 master.c 第 190 行定义.

{
        xwer_t rc;
 
        rc = xwds_device_vop_resume(&i2cm->dev);
        return rc;
}

函数调用图:

xwds_i2cm_vop_start()

static xwer_t xwds_i2cm_vop_start ( struct xwds_i2cm *  i2cm )

static

XWDS VOP：启动I2C主机控制器

参数

[in]

i2cm

I2C主机控制器对象指针

返回

错误码

在文件 master.c 第 146 行定义.

{
        xwer_t rc;
 
        rc = xwds_device_vop_start(&i2cm->dev);
        return rc;
}

函数调用图:

xwds_i2cm_vop_stop()

static xwer_t xwds_i2cm_vop_stop ( struct xwds_i2cm *  i2cm )

static

XWDS VOP：停止I2C主机控制器

参数

[in]

i2cm

I2C主机控制器对象指针

返回

错误码

在文件 master.c 第 160 行定义.

{
        xwer_t rc;
 
        rc = xwds_device_vop_stop(&i2cm->dev);
        return rc;
}

函数调用图:

xwds_i2cm_vop_suspend()

static xwer_t xwds_i2cm_vop_suspend ( struct xwds_i2cm *  i2cm )

static

XWDS VOP：暂停I2C主机控制器

参数

[in]

i2cm

I2C主机控制器对象指针

返回

错误码

在文件 master.c 第 176 行定义.

{
        xwer_t rc;
 
        rc = xwds_device_vop_suspend(&i2cm->dev);
        return rc;
}

函数调用图:

变量说明

xwds_i2cm_vop

const struct xwds_virtual_operation xwds_i2cm_vop

初始值:

= {
        .probe = (void *)xwds_i2cm_vop_probe,
        .remove = (void *)xwds_i2cm_vop_remove,
        .start = (void *)xwds_i2cm_vop_start,
        .stop = (void *)xwds_i2cm_vop_stop,
 
        .suspend = (void *)xwds_i2cm_vop_suspend,
        .resume = (void *)xwds_i2cm_vop_resume,
 
}

在文件 master.c 第 45 行定义.