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Add a RAM-based MTD device

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3532 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2011-04-24 17:35:16 +00:00
parent cf17883e50
commit 4e04155ad1
6 changed files with 391 additions and 16 deletions
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drivers/mtd/ftl.c
+10 -5
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@@ -135,7 +135,7 @@ static int ftl_open(FAR struct inode *inode)
}
/****************************************************************************
* Name: ftl_closel
* Name: ftl_close
*
* Description: close the block device
*
@@ -450,9 +450,14 @@ static int ftl_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
* Description:
* Initialize to provide a block driver wrapper around an MTD interface
*
* Input Parameters:
* minor - The minor device number. The MTD block device will be
* registered as as /dev/mtdblockN where N is the minor number.
* mtd - The MTD device that supports the FLASH interface.
*
****************************************************************************/
int ftl_initialize(int minor, uint8_t *buffer, FAR struct mtd_dev_s *mtd)
int ftl_initialize(int minor, FAR struct mtd_dev_s *mtd)
{
struct ftl_struct_s *dev;
char devname[16];
@@ -467,12 +472,12 @@ int ftl_initialize(int minor, uint8_t *buffer, FAR struct mtd_dev_s *mtd)
}
#endif
/* Allocate a ramdisk device structure */
/* Allocate a FTL device structure */
dev = (struct ftl_struct_s *)kmalloc(sizeof(struct ftl_struct_s));
if (dev)
{
/* Initialize the ramdisk device structure */
/* Initialize the FTL device structure */
dev->mtd = mtd;
@@ -535,7 +540,7 @@ int ftl_initialize(int minor, uint8_t *buffer, FAR struct mtd_dev_s *mtd)
snprintf(devname, 16, "/dev/mtdblock%d", minor);
/* Inode private data is a reference to the ramdisk device stgructure */
/* Inode private data is a reference to the FTL device structure */
ret = register_blockdriver(devname, &g_bops, 0, dev);
if (ret < 0)