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提交 20de2ffa 编写于 作者: D dzzxzz@gmail.com
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2274 bbd45198-f89e-11dd-88c7-29a3b14d5316
上级 a4456b86
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Showing with 174 addition and 174 deletion
components/drivers/spi/spi_dev.c
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/* /*
* File : spi_dev.c * File : spi_dev.c
* This file is part of RT-Thread RTOS * This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
* *
* The license and distribution terms for this file may be * The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at * found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE * http://www.rt-thread.org/license/LICENSE
* *
* Change Logs: * Change Logs:
* Date Author Notes * Date Author Notes
*/ */
#include <rtthread.h> #include <rtthread.h>
#include <drivers/spi.h> #include <drivers/spi.h>
/* SPI bus device interface, compatible with RT-Thread 0.3.x/1.0.x */ /* SPI bus device interface, compatible with RT-Thread 0.3.x/1.0.x */
static rt_err_t _spi_bus_device_init(rt_device_t dev) static rt_err_t _spi_bus_device_init(rt_device_t dev)
{ {
struct rt_spi_bus *bus; struct rt_spi_bus *bus;
bus = (struct rt_spi_bus *)dev; bus = (struct rt_spi_bus *)dev;
RT_ASSERT(bus != RT_NULL); RT_ASSERT(bus != RT_NULL);
return RT_EOK; return RT_EOK;
} }
static rt_size_t _spi_bus_device_read(rt_device_t dev, static rt_size_t _spi_bus_device_read(rt_device_t dev,
rt_off_t pos, rt_off_t pos,
void *buffer, void *buffer,
rt_size_t size) rt_size_t size)
{ {
struct rt_spi_bus *bus; struct rt_spi_bus *bus;
bus = (struct rt_spi_bus *)dev; bus = (struct rt_spi_bus *)dev;
RT_ASSERT(bus != RT_NULL); RT_ASSERT(bus != RT_NULL);
RT_ASSERT(bus->owner != RT_NULL); RT_ASSERT(bus->owner != RT_NULL);
return rt_spi_transfer(bus->owner, RT_NULL, buffer, size); return rt_spi_transfer(bus->owner, RT_NULL, buffer, size);
} }
static rt_size_t _spi_bus_device_write(rt_device_t dev, static rt_size_t _spi_bus_device_write(rt_device_t dev,
rt_off_t pos, rt_off_t pos,
const void *buffer, const void *buffer,
rt_size_t size) rt_size_t size)
{ {
struct rt_spi_bus *bus; struct rt_spi_bus *bus;
bus = (struct rt_spi_bus *)dev; bus = (struct rt_spi_bus *)dev;
RT_ASSERT(bus != RT_NULL); RT_ASSERT(bus != RT_NULL);
RT_ASSERT(bus->owner != RT_NULL); RT_ASSERT(bus->owner != RT_NULL);
return rt_spi_transfer(bus->owner, buffer, RT_NULL, size); return rt_spi_transfer(bus->owner, buffer, RT_NULL, size);
} }
static rt_err_t _spi_bus_device_control(rt_device_t dev, static rt_err_t _spi_bus_device_control(rt_device_t dev,
rt_uint8_t cmd, rt_uint8_t cmd,
void *args) void *args)
{ {
struct rt_spi_bus *bus; struct rt_spi_bus *bus;
bus = (struct rt_spi_bus *)dev; bus = (struct rt_spi_bus *)dev;
RT_ASSERT(bus != RT_NULL); RT_ASSERT(bus != RT_NULL);
switch (cmd) switch (cmd)
{ {
case 0: /* set device */ case 0: /* set device */
break; break;
case 1: case 1:
break; break;
} }
return RT_EOK; return RT_EOK;
} }
rt_err_t rt_spi_bus_device_init(struct rt_spi_bus *bus, const char *name) rt_err_t rt_spi_bus_device_init(struct rt_spi_bus *bus, const char *name)
{ {
struct rt_device *device; struct rt_device *device;
RT_ASSERT(bus != RT_NULL); RT_ASSERT(bus != RT_NULL);
device = &bus->parent; device = &bus->parent;
/* set device type */ /* set device type */
device->type = RT_Device_Class_SPIBUS; device->type = RT_Device_Class_SPIBUS;
/* initialize device interface */ /* initialize device interface */
device->init = _spi_bus_device_init; device->init = _spi_bus_device_init;
device->open = RT_NULL; device->open = RT_NULL;
device->close = RT_NULL; device->close = RT_NULL;
device->read = _spi_bus_device_read; device->read = _spi_bus_device_read;
device->write = _spi_bus_device_write; device->write = _spi_bus_device_write;
device->control = _spi_bus_device_control; device->control = _spi_bus_device_control;
/* register to device manager */ /* register to device manager */
return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR); return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR);
} }
/* SPI Dev device interface, compatible with RT-Thread 0.3.x/1.0.x */ /* SPI Dev device interface, compatible with RT-Thread 0.3.x/1.0.x */
static rt_err_t _spidev_device_init(rt_device_t dev) static rt_err_t _spidev_device_init(rt_device_t dev)
{ {
struct rt_spi_device *device; struct rt_spi_device *device;
device = (struct rt_spi_device *)dev; device = (struct rt_spi_device *)dev;
RT_ASSERT(device != RT_NULL); RT_ASSERT(device != RT_NULL);
return RT_EOK; return RT_EOK;
} }
static rt_size_t _spidev_device_read(rt_device_t dev, static rt_size_t _spidev_device_read(rt_device_t dev,
rt_off_t pos, rt_off_t pos,
void *buffer, void *buffer,
rt_size_t size) rt_size_t size)
{ {
struct rt_spi_device *device; struct rt_spi_device *device;
device = (struct rt_spi_device *)dev; device = (struct rt_spi_device *)dev;
RT_ASSERT(device != RT_NULL); RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->bus != RT_NULL); RT_ASSERT(device->bus != RT_NULL);
return rt_spi_transfer(device, RT_NULL, buffer, size); return rt_spi_transfer(device, RT_NULL, buffer, size);
} }
static rt_size_t _spidev_device_write(rt_device_t dev, static rt_size_t _spidev_device_write(rt_device_t dev,
rt_off_t pos, rt_off_t pos,
const void *buffer, const void *buffer,
rt_size_t size) rt_size_t size)
{ {
struct rt_spi_device *device; struct rt_spi_device *device;
device = (struct rt_spi_device *)dev; device = (struct rt_spi_device *)dev;
RT_ASSERT(device != RT_NULL); RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->bus != RT_NULL); RT_ASSERT(device->bus != RT_NULL);
return rt_spi_transfer(device, buffer, RT_NULL, size); return rt_spi_transfer(device, buffer, RT_NULL, size);
} }
static rt_err_t _spidev_device_control(rt_device_t dev, static rt_err_t _spidev_device_control(rt_device_t dev,
rt_uint8_t cmd, rt_uint8_t cmd,
void *args) void *args)
{ {
struct rt_spi_device *device; struct rt_spi_device *device;
device = (struct rt_spi_device *)dev; device = (struct rt_spi_device *)dev;
RT_ASSERT(device != RT_NULL); RT_ASSERT(device != RT_NULL);
switch (cmd) switch (cmd)
{ {
case 0: /* set device */ case 0: /* set device */
break; break;
case 1: case 1:
break; break;
} }
return RT_EOK; return RT_EOK;
} }
rt_err_t rt_spidev_device_init(struct rt_spi_device *dev, const char *name) rt_err_t rt_spidev_device_init(struct rt_spi_device *dev, const char *name)
{ {
struct rt_device *device; struct rt_device *device;
RT_ASSERT(dev != RT_NULL); RT_ASSERT(dev != RT_NULL);
device = &(dev->parent); device = &(dev->parent);
/* set device type */ /* set device type */
device->type = RT_Device_Class_SPIDevice; device->type = RT_Device_Class_SPIDevice;
device->init = _spidev_device_init; device->init = _spidev_device_init;
device->open = RT_NULL; device->open = RT_NULL;
device->close = RT_NULL; device->close = RT_NULL;
device->read = _spidev_device_read; device->read = _spidev_device_read;
device->write = _spidev_device_write; device->write = _spidev_device_write;
device->control = _spidev_device_control; device->control = _spidev_device_control;
/* register to device manager */ /* register to device manager */
return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR); return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR);
} }
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