add mtd_nand interface code

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

5 files changed, 187 insertions, 1 deletions

diff --git a/components/drivers/include/drivers/mtd.h b/components/drivers/include/drivers/mtd.h
index 13315b2684..3306b7ec27 100644
--- a/components/drivers/include/drivers/mtd.h
+++ b/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
diff --git a/components/drivers/include/drivers/mtd_nand.h b/components/drivers/include/drivers/mtd_nand.h
new file mode 100644
index 0000000000..c9f62d3d34
--- /dev/null
+++ b/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_ */

diff --git a/components/drivers/include/rtdevice.h b/components/drivers/include/rtdevice.h
index e6b7dddd40..583c9afe07 100644
--- a/components/drivers/include/rtdevice.h
+++ b/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
diff --git a/components/drivers/mtd/mtd_core.c b/components/drivers/mtd/mtd_core.c
index a3d429dddd..d34001dfae 100644
--- a/components/drivers/mtd/mtd_core.c
+++ b/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
diff --git a/components/drivers/mtd/mtd_nand.c b/components/drivers/mtd/mtd_nand.c
new file mode 100644
index 0000000000..8be7a9d0d0
--- /dev/null
+++ b/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