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Extend support to other chips in the family

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2941 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2010-09-12 13:21:04 +00:00
parent 8a5df19e8b
commit 3d9e1c72e8
1 changed files with 50 additions and 16 deletions
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drivers/mtd/at45db.c
+50 -16
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@@ -150,9 +150,15 @@
#define AT45DB_MANUFACTURER 0x1f /* Manufacturer ID: Atmel */
#define AT45DB_DEVID1_CAPMSK 0x1f /* Bits 0-4: Capacity */
#define AT45DB_DEVID1_16MBIT 0x06 /* xxx0 0110 = 16Mbit */
#define AT45DB_DEVID1_1MBIT 0x02 /* xxx0 0010 = 1Mbit AT45DB011 */
#define AT45DB_DEVID1_2MBIT 0x03 /* xxx0 0012 = 2Mbit AT45DB021 */
#define AT45DB_DEVID1_4MBIT 0x04 /* xxx0 0100 = 4Mbit AT45DB041 */
#define AT45DB_DEVID1_8MBIT 0x05 /* xxx0 0101 = 8Mbit AT45DB081 */
#define AT45DB_DEVID1_16MBIT 0x06 /* xxx0 0110 = 16Mbit AT45DB161 */
#define AT45DB_DEVID1_32MBIT 0x07 /* xxx0 0111 = 32Mbit AT45DB321 */
#define AT45DB_DEVID1_FAMMSK 0xe0 /* Bits 5-7: Family */
#define AT45DB_DEVID1_DFLASH 0x20 /* 001x xxxx = Dataflash */
#define AT45DB_DEVID1_AT26DF 0x40 /* 010x xxxx = AT26DFxxx series (Not supported) */
#define AT45DB_DEVID2_VERMSK 0x1f /* Bits 0-4: MLC mask */
#define AT45DB_DEVID2_MLCMSK 0xe0 /* Bits 5-7: MLC mask */
@@ -335,25 +341,53 @@ static inline int at45db_rdid(struct at45db_dev_s *priv)
/* Okay.. is it a FLASH capacity that we understand? */
capacity = devid1 & AT45DB_DEVID1_CAPMSK;
if (capacity == AT45DB_DEVID1_16MBIT)
switch (capacity)
{
/* Save the FLASH geometry for the 16Mbit AT45DB161 */
case AT45DB_DEVID1_1MBIT:
/* Save the FLASH geometry for the 16Mbit AT45DB011 */
priv->pageshift = 9; /* Page size = 512 bytes */
priv->npages = 4096; /* 4096 pages */
return OK;
}
# if 0 /* Add support for other at45db FLASH parts here */
else if (capacity == )
{
/* Save the FLASH geometry */
priv->pageshift = 8; /* Page size = 256 bytes */
priv->npages = 512; /* 512 pages */
return OK;
priv->pageshift = ;
priv->npages = ;
return OK;
case AT45DB_DEVID1_2MBIT:
/* Save the FLASH geometry for the 16Mbit AT45DB021 */
priv->pageshift = 8; /* Page size = 256 bytes */
priv->npages = 1024; /* 1024 pages */
return OK;
case AT45DB_DEVID1_4MBIT:
/* Save the FLASH geometry for the 16Mbit AT45DB041 */
priv->pageshift = 8; /* Page size = 256 bytes */
priv->npages = 2048; /* 2048 pages */
return OK;
case AT45DB_DEVID1_8MBIT:
/* Save the FLASH geometry for the 16Mbit AT45DB081 */
priv->pageshift = 8; /* Page size = 256 bytes */
priv->npages = 4096; /* 4096 pages */
return OK;
case AT45DB_DEVID1_16MBIT:
/* Save the FLASH geometry for the 16Mbit AT45DB161 */
priv->pageshift = 9; /* Page size = 512 bytes */
priv->npages = 4096; /* 4096 pages */
return OK;
case AT45DB_DEVID1_32MBIT:
/* Save the FLASH geometry for the 16Mbit AT45DB321 */
priv->pageshift = 9; /* Page size = 512 bytes */
priv->npages = 8192; /* 8192 pages */
return OK;
default:
return -ENODEV;
}
#endif
}
return -ENODEV;