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drivers/mtd/devices/bcm47xxsflash.h 2.37 KB
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  #ifndef __BCM47XXSFLASH_H
  #define __BCM47XXSFLASH_H
  
  #include <linux/mtd/mtd.h>
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  /* Used for ST flashes only. */
  #define OPCODE_ST_WREN		0x0006		/* Write Enable */
  #define OPCODE_ST_WRDIS		0x0004		/* Write Disable */
  #define OPCODE_ST_RDSR		0x0105		/* Read Status Register */
  #define OPCODE_ST_WRSR		0x0101		/* Write Status Register */
  #define OPCODE_ST_READ		0x0303		/* Read Data Bytes */
  #define OPCODE_ST_PP		0x0302		/* Page Program */
  #define OPCODE_ST_SE		0x02d8		/* Sector Erase */
  #define OPCODE_ST_BE		0x00c7		/* Bulk Erase */
  #define OPCODE_ST_DP		0x00b9		/* Deep Power-down */
  #define OPCODE_ST_RES		0x03ab		/* Read Electronic Signature */
  #define OPCODE_ST_CSA		0x1000		/* Keep chip select asserted */
  #define OPCODE_ST_SSE		0x0220		/* Sub-sector Erase */
  
  /* Used for Atmel flashes only. */
  #define OPCODE_AT_READ				0x07e8
  #define OPCODE_AT_PAGE_READ			0x07d2
  #define OPCODE_AT_STATUS			0x01d7
  #define OPCODE_AT_BUF1_WRITE			0x0384
  #define OPCODE_AT_BUF2_WRITE			0x0387
  #define OPCODE_AT_BUF1_ERASE_PROGRAM		0x0283
  #define OPCODE_AT_BUF2_ERASE_PROGRAM		0x0286
  #define OPCODE_AT_BUF1_PROGRAM			0x0288
  #define OPCODE_AT_BUF2_PROGRAM			0x0289
  #define OPCODE_AT_PAGE_ERASE			0x0281
  #define OPCODE_AT_BLOCK_ERASE			0x0250
  #define OPCODE_AT_BUF1_WRITE_ERASE_PROGRAM	0x0382
  #define OPCODE_AT_BUF2_WRITE_ERASE_PROGRAM	0x0385
  #define OPCODE_AT_BUF1_LOAD			0x0253
  #define OPCODE_AT_BUF2_LOAD			0x0255
  #define OPCODE_AT_BUF1_COMPARE			0x0260
  #define OPCODE_AT_BUF2_COMPARE			0x0261
  #define OPCODE_AT_BUF1_REPROGRAM		0x0258
  #define OPCODE_AT_BUF2_REPROGRAM		0x0259
  
  /* Status register bits for ST flashes */
  #define SR_ST_WIP		0x01		/* Write In Progress */
  #define SR_ST_WEL		0x02		/* Write Enable Latch */
  #define SR_ST_BP_MASK		0x1c		/* Block Protect */
  #define SR_ST_BP_SHIFT		2
  #define SR_ST_SRWD		0x80		/* Status Register Write Disable */
  
  /* Status register bits for Atmel flashes */
  #define SR_AT_READY		0x80
  #define SR_AT_MISMATCH		0x40
  #define SR_AT_ID_MASK		0x38
  #define SR_AT_ID_SHIFT		3
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  struct bcma_drv_cc;
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  enum bcm47xxsflash_type {
  	BCM47XXSFLASH_TYPE_ATMEL,
  	BCM47XXSFLASH_TYPE_ST,
  };
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  struct bcm47xxsflash {
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  	struct bcma_drv_cc *bcma_cc;
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  	int (*cc_read)(struct bcm47xxsflash *b47s, u16 offset);
  	void (*cc_write)(struct bcm47xxsflash *b47s, u16 offset, u32 value);
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  	enum bcm47xxsflash_type type;
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  	u32 window;
  	u32 blocksize;
  	u16 numblocks;
  	u32 size;
  
  	struct mtd_info mtd;
  };
  
  #endif /* BCM47XXSFLASH */