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| author | Thomas Chou <thomas@wytron.com.tw> | 2015-11-07 14:20:31 +0800 |
|---|---|---|
| committer | Thomas Chou <thomas@wytron.com.tw> | 2015-11-12 08:26:58 +0800 |
| commit | d85879938d3fc3557f6ff74a60f95e0975a314ce (patch) | |
| tree | 9610f6a0c88c2005c274a2b6adce644d4088c53f /include | |
| parent | b375219e732f044e7f48b676fa4e36e7c29d81e1 (diff) | |
| download | blackbird-obmc-uboot-d85879938d3fc3557f6ff74a60f95e0975a314ce.tar.gz blackbird-obmc-uboot-d85879938d3fc3557f6ff74a60f95e0975a314ce.zip | |
dm: implement a MTD uclass
Implement a Memory Technology Device (MTD) uclass. It should
include most flash drivers in the future. Though no uclass ops
are defined yet, the MTD ops could be used.
The NAND flash driver is based on MTD. The CFI flash and SPI
flash support MTD, too. It should make sense to convert them
to MTD uclass.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dm/uclass-id.h | 1 | ||||
| -rw-r--r-- | include/flash.h | 3 | ||||
| -rw-r--r-- | include/linux/mtd/mtd.h | 2 | ||||
| -rw-r--r-- | include/mtd.h | 23 |
4 files changed, 29 insertions, 0 deletions
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index d0cf4ce6a0..327de3486b 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -43,6 +43,7 @@ enum uclass_id { UCLASS_MISC, /* Miscellaneous device */ UCLASS_MMC, /* SD / MMC card or chip */ UCLASS_MOD_EXP, /* RSA Mod Exp device */ + UCLASS_MTD, /* Memory Technology Device (MTD) device */ UCLASS_PCH, /* x86 platform controller hub */ UCLASS_PCI, /* PCI bus */ UCLASS_PCI_GENERIC, /* Generic PCI bus device */ diff --git a/include/flash.h b/include/flash.h index 5754cf9773..13e03842c8 100644 --- a/include/flash.h +++ b/include/flash.h @@ -41,6 +41,9 @@ typedef struct { ulong addr_unlock2; /* unlock address 2 for AMD flash roms */ const char *name; /* human-readable name */ #endif +#ifdef CONFIG_MTD + struct mtd_info *mtd; +#endif } flash_info_t; extern flash_info_t flash_info[]; /* info for FLASH chips */ diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index e3d3fc73fd..c2cd3df1fa 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -272,6 +272,8 @@ struct mtd_info { struct module *owner; #ifndef __UBOOT__ struct device dev; +#else + struct udevice *dev; #endif int usecount; }; diff --git a/include/mtd.h b/include/mtd.h new file mode 100644 index 0000000000..3f8c293b00 --- /dev/null +++ b/include/mtd.h @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _MTD_H_ +#define _MTD_H_ + +#include <linux/mtd/mtd.h> + +/* + * Get mtd_info structure of the dev, which is stored as uclass private. + * + * @dev: The MTD device + * @return: pointer to mtd_info, NULL on error + */ +static inline struct mtd_info *mtd_get_info(struct udevice *dev) +{ + return dev_get_uclass_priv(dev); +} + +#endif /* _MTD_H_ */ |
