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drivers/mtd/ftl.c: Support initialization of an FTL block device with a custom name

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This commit is contained in:
Xiang Xiao 2018-08-28 07:15:57 -06:00 committed by Gregory Nutt
parent 41a1e76735
commit 8b5ac497ad
2 changed files with 58 additions and 10 deletions
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53
drivers/mtd/ftl.c
View File

@ -1,7 +1,8 @@
/****************************************************************************
* drivers/mtd/ftl.c
*
* Copyright (C) 2009, 2011-2012, 2016 Gregory Nutt. All rights reserved.
* Copyright (C) 2009, 2011-2012, 2016, 2018 Gregory Nutt. All rights
* reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -499,28 +500,28 @@ static int ftl_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
****************************************************************************/
/****************************************************************************
* Name: ftl_initialize
* Name: ftl_initialize_by_name
*
* 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.
* name - The device name. The MTD block device will be
* registered as as /dev/mtdNAME where NAME is the device name.
* mtd - The MTD device that supports the FLASH interface.
*
****************************************************************************/
int ftl_initialize(int minor, FAR struct mtd_dev_s *mtd)
int ftl_initialize_by_name(FAR const char *name, FAR struct mtd_dev_s *mtd)
{
struct ftl_struct_s *dev;
char devname[16];
char devname[64];
int ret = -ENOMEM;
#ifdef CONFIG_DEBUG_FEATURES
/* Sanity check */
#ifdef CONFIG_DEBUG_FEATURES
if (minor < 0 || minor > 255 || !mtd)
if (name == NULL || mtd == NULL)
{
return -EINVAL;
}
@ -596,7 +597,7 @@ int ftl_initialize(int minor, FAR struct mtd_dev_s *mtd)
/* Create a MTD block device name */
snprintf(devname, 16, "/dev/mtdblock%d", minor);
snprintf(devname, 64, "/dev/mtd%s", name);
/* Inode private data is a reference to the FTL device structure */
@ -613,3 +614,35 @@ int ftl_initialize(int minor, FAR struct mtd_dev_s *mtd)
return ret;
}
/****************************************************************************
* Name: ftl_initialize
*
* 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, FAR struct mtd_dev_s *mtd)
{
char name[16];
#ifdef CONFIG_DEBUG_FEATURES
/* Sanity check */
if (minor < 0 || minor > 255)
{
return -EINVAL;
}
#endif
/* Do the real work by ftl_initialize_by_name */
snprintf(name, 16, "block%d", minor);
return ftl_initialize_by_name(name, mtd);
}

15
include/nuttx/mtd/mtd.h
View File

@ -287,6 +287,21 @@ int mtd_setpartitionname(FAR struct mtd_dev_s *mtd, FAR const char *name);
FAR struct mtd_dev_s *mtd_rwb_initialize(FAR struct mtd_dev_s *mtd);
#endif
/****************************************************************************
* Name: ftl_initialize_by_name
*
* Description:
* Initialize to provide a block driver wrapper around an MTD interface
*
* Input Parameters:
* name - The device name. The MTD block device will be
* registered as as /dev/mtdNAME where NAME is the device name.
* mtd - The MTD device that supports the FLASH interface.
*
****************************************************************************/
int ftl_initialize_by_name(FAR const char *name, FAR struct mtd_dev_s *mtd);
/****************************************************************************
* Name: ftl_initialize
*