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Add support for the SST25VF016B serial FLASH. From Davide Sidrane

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This commit is contained in:
Gregory Nutt 2013-10-16 08:28:58 -06:00
parent 58455b46ab
commit 4e3d02b216
2 changed files with 42 additions and 11 deletions
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6
ChangeLog
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@ -5769,4 +5769,10 @@
the NxWM taskbar (2013-10-15).
* configs/sama5d3x-ek/nxwm/defconfig: Use the 320x320 NuttX logo as
the NxWM backgroun (2013-10-15).
* arch/arm/src/stm32/chip/stm32f103c_pinmap.h: Pinmapping corrections
from David Sidrane (2013-10-16).
* configs/spark: The Spark device configuration is receiving some
TLC from David Sidrane (2013-10-16).
* drivers/mtd/sst25.c: Add support for the SST25VF016B. From David
Sidrane (2013-10-16).

47
drivers/mtd/sst25.c
View File

@ -5,6 +5,11 @@
* Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Modifications:
*
* - 10/08/2013: David Sidrane <david_s5@nscdg.com>
* - Modified to support SST25VF016B
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
@ -115,13 +120,15 @@
/* Read ID (RDID) register values */
#define SST25_MANUFACTURER 0xbf /* SST manufacturer ID */
#define SST25_VF016_DEVID 0x25 /* SSTVF016B device ID */
#define SST25_VF032_DEVID 0x20 /* SSTVF032B device ID */
/* JEDEC Read ID register values */
#define SST25_JEDEC_MANUFACTURER 0xbf /* SST manufacturer ID */
#define SST25_JEDEC_MEMORY_TYPE 0x25 /* SST25 memory type */
#define SST25_JEDEC_MEMORY_CAPACITY 0x4a /* SST25VF032B memory capacity */
#define SST25_JEDEC_VF032_CAPACITY 0x4a /* SST25VF032B memory capacity */
#define SST25_JEDEC_VF016_CAPACITY 0x41 /* SST25VF016B memory capacity */
/* Status register bit definitions */
@ -148,9 +155,13 @@
/* SST25VF520 capacity is 2Mbit (256Kbit x 8) = 256Kb (32Kb x 8) */
/* SST25VF540 capacity is 4Mbit (512Kbit x 8) = 512Kb (64Kb x 8) */
/* SST25VF080 capacity is 8Mbit (1024Kbit x 8) = 1Mb (128Kb x 8) */
/* SST25VF016 capacity is 16Mbit (2048Kbit x 8) = 2Mb (256Kb x 8) */
/* Not yet supported */
/* SST25VF016 capacity is 16Mbit (2048Kbit x 8) = 2Mb (256Kb x 8) */
#define SST25_VF016_SECTOR_SHIFT 12 /* Sector size 1 << 12 = 4Kb */
#define SST25_VF016_NSECTORS 512 /* 512 sectors x 4096 bytes/sector = 2Mb */
/* SST25VF032 capacity is 32Mbit (4096Kbit x 8) = 4Mb (512kb x 8) */
#define SST25_VF032_SECTOR_SHIFT 12 /* Sector size 1 << 12 = 4Kb */
@ -218,7 +229,9 @@ static void sst25_unprotect(FAR struct spi_dev_s *dev);
#endif
static uint8_t sst25_waitwritecomplete(FAR struct sst25_dev_s *priv);
static inline void sst25_wren(FAR struct sst25_dev_s *priv);
#if !defined(CONFIG_SST25_SLOWWRITE) && !defined(CONFIG_SST25_READONLY)
static inline void sst25_wrdi(FAR struct sst25_dev_s *priv);
#endif
static void sst25_sectorerase(FAR struct sst25_dev_s *priv, off_t offset);
static inline int sst25_chiperase(FAR struct sst25_dev_s *priv);
static void sst25_byteread(FAR struct sst25_dev_s *priv, FAR uint8_t *buffer,
@ -329,19 +342,30 @@ static inline int sst25_readid(struct sst25_dev_s *priv)
/* Check for a valid manufacturer and memory type */
if (manufacturer == SST25_JEDEC_MANUFACTURER && memory == SST25_JEDEC_MEMORY_TYPE)
if (manufacturer == SST25_JEDEC_MANUFACTURER &&
memory == SST25_JEDEC_MEMORY_TYPE)
{
/* Okay.. is it a FLASH capacity that we understand? This should be extended
* support other members of the SST25 family.
/* Okay.. is it a FLASH capacity that we understand? This should be
* extended support other members of the SST25 family. If so, save
* the FLASH geometry.
*/
if (capacity == SST25_JEDEC_MEMORY_CAPACITY)
switch (capacity)
{
/* Save the FLASH geometry */
case SST25_JEDEC_VF032_CAPACITY:
priv->sectorshift = SST25_VF032_SECTOR_SHIFT;
priv->nsectors = SST25_VF032_NSECTORS;
return OK;
priv->sectorshift = SST25_VF032_SECTOR_SHIFT;
priv->nsectors = SST25_VF032_NSECTORS;
return OK;
case SST25_JEDEC_VF016_CAPACITY:
priv->sectorshift = SST25_VF016_SECTOR_SHIFT;
priv->nsectors = SST25_VF016_NSECTORS;
return OK;
/* Not implemented yet */
default:
break;
}
}
@ -478,7 +502,7 @@ static inline void sst25_wren(struct sst25_dev_s *priv)
/************************************************************************************
* Name: sst25_wrdi
************************************************************************************/
#if !defined(CONFIG_SST25_SLOWWRITE) && !defined(CONFIG_SST25_READONLY)
static inline void sst25_wrdi(struct sst25_dev_s *priv)
{
/* Select this FLASH part */
@ -493,6 +517,7 @@ static inline void sst25_wrdi(struct sst25_dev_s *priv)
SPI_SELECT(priv->dev, SPIDEV_FLASH, false);
}
#endif
/************************************************************************************
* Name: sst25_sectorerase