add mtd_nand interface code

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2016 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/drivers/include/drivers/mtd.h

@@ -90,4 +90,6 @@ rt_inline rt_err_t rt_mtd_erase_block(struct rt_mtd_device* device, rt_uint32_t
 	return device->ops->erase_block(device, block);
 }
 
+
+
 #endif

components/drivers/include/drivers/mtd_nand.h

@@ -0,0 +1,103 @@
+/*
+ * File      : mtd.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2011-12-05     Bernard      the first version
+ * 2011-04-02     prife        add mark_badblock and check_block
+ */
+
+/*
+ * COPYRIGHT (C) 2012, Shanghai Real Thread
+ */
+
+#ifndef __MTD_NAND_H__
+#define __MTD_NAND_H__
+
+#include <rtdevice.h>
+
+struct rt_mtd_nand_driver_ops;
+#define RT_MTD_NAND_DEVICE(device)	((struct rt_mtd_nand_device*)(device))
+
+struct rt_mtd_nand_device
+{
+	struct rt_device parent;
+
+	rt_uint32_t page_size;			/* The Page size in the flash */
+	rt_uint32_t block_size;			/* The Block size in the flash */
+
+	rt_uint16_t oob_size;			/* Out of bank size */
+	rt_uint16_t reserve;
+
+	rt_uint32_t block_start;		/* The start of available block*/
+	rt_uint32_t block_end;			/* The end of available block */
+
+	/* operations interface */
+	const struct rt_mtd_nand_driver_ops* ops;
+};
+
+struct rt_mtd_nand_driver_ops
+{
+	rt_err_t (*read_id) (struct rt_mtd_nand_device* device);
+
+	rt_err_t (*read_page)(struct rt_mtd_nand_device* device,
+                          rt_off_t page,
+                          rt_uint8_t* data, rt_uint32_t data_len,
+                          rt_uint8_t * spare, rt_uint32_t spare_len);
+
+	rt_err_t (*write_page)(struct rt_mtd_nand_device * device,
+                           rt_off_t page,
+                           const rt_uint8_t * data, rt_uint32_t data_len,
+                           const rt_uint8_t * spare, rt_uint32_t spare_len);
+
+	rt_err_t (*erase_block)(struct rt_mtd_nand_device* device, rt_uint32_t block);
+	rt_err_t (*check_block)(struct rt_mtd_nand_device* device, rt_uint32_t block);
+	rt_err_t (*mark_badblock)(struct rt_mtd_nand_device* device, rt_uint32_t block);
+};
+
+rt_err_t rt_mtd_nand_register_device(const char* name, struct rt_mtd_nand_device* device);
+
+rt_inline rt_uint32_t rt_mtd_nand_read_id(struct rt_mtd_nand_device* device)
+{
+	return device->ops->read_id(device);
+}
+
+rt_inline rt_err_t rt_mtd_nand_read(
+	struct rt_mtd_nand_device* device,
+	rt_off_t page,
+	rt_uint8_t* data, rt_uint32_t data_len,
+	rt_uint8_t * spare, rt_uint32_t spare_len)
+{
+	return device->ops->read_page(device, page, data, data_len, spare, spare_len);
+}
+
+rt_inline rt_err_t rt_mtd_nand_write(
+	struct rt_mtd_nand_device* device,
+	rt_off_t page,
+	const rt_uint8_t* data, rt_uint32_t data_len,
+	const rt_uint8_t * spare, rt_uint32_t spare_len)
+{
+	return device->ops->write_page(device, page, data, data_len, spare, spare_len);
+}
+
+rt_inline rt_err_t rt_mtd_nand_erase_block(struct rt_mtd_nand_device* device, rt_uint32_t block)
+{
+	return device->ops->erase_block(device, block);
+}
+
+rt_inline rt_err_t rt_mtd_nand_check_block(struct rt_mtd_nand_device* device, rt_uint32_t block)
+{
+	return device->ops->check_block(device, block);
+}
+
+rt_inline rt_err_t rt_mtd_nand_mark_badblock(struct rt_mtd_nand_device* device, rt_uint32_t block)
+{
+	return device->ops->mark_badblock(device, block);
+}
+#endif /* MTD_NAND_H_ */

components/drivers/include/rtdevice.h

@@ -13,6 +13,10 @@
 #include "drivers/mtd.h"
 #endif
 
+#ifdef RT_USING_MTD_NAND
+#include "drivers/mtd_nand.h"
+#endif
+
 #ifdef RT_USING_USB_DEVICE
 #include "drivers/usb_device.h"
 #endif

components/drivers/mtd/mtd_core.c

@@ -75,5 +75,4 @@ rt_err_t rt_mtd_register_device(const char* name, struct rt_mtd_device* device)
 	/* register to RT-Thread device system */
 	return rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
 }
-
 #endif

components/drivers/mtd/mtd_nand.c

@@ -0,0 +1,78 @@
+/*
+ * File      : mtd_core.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2011-12-05     Bernard      the first version
+ */
+
+/*
+ * COPYRIGHT (C) 2012, Shanghai Real Thread
+ */
+
+#include <drivers/mtd.h>
+
+#ifdef RT_USING_MTD_NAND
+
+/*
+ * RT-Thread Generic Device Interface
+ */
+static rt_err_t _mtd_init(rt_device_t dev)
+{
+	return RT_EOK;
+}
+
+static rt_err_t _mtd_open(rt_device_t dev, rt_uint16_t oflag)
+{
+	return RT_EOK;
+}
+
+static rt_err_t _mtd_close(rt_device_t dev)
+{
+	return RT_EOK;
+}
+
+static rt_size_t _mtd_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
+{
+	return size;
+}
+
+static rt_size_t _mtd_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
+{
+	return size;
+}
+
+static rt_err_t _mtd_control(rt_device_t dev, rt_uint8_t cmd, void *args)
+{
+	return RT_EOK;
+}
+
+rt_err_t rt_mtd_nand_register_device(const char* name, struct rt_mtd_nand_device* device)
+{
+	rt_device_t dev;
+
+	dev = RT_DEVICE(device);
+	RT_ASSERT(dev != RT_NULL);
+
+	/* set device class and generic device interface */
+	dev->type 		= RT_Device_Class_MTD;
+	dev->init 		= _mtd_init;
+	dev->open 		= _mtd_open;
+	dev->read 		= _mtd_read;
+	dev->write 		= _mtd_write;
+	dev->close      = _mtd_close;
+	dev->control 	= _mtd_control;
+
+	dev->rx_indicate = RT_NULL;
+	dev->tx_complete = RT_NULL;
+
+	/* register to RT-Thread device system */
+	return rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
+}
+#endif