cregit-Linux how code gets into the kernel

Release 4.7 drivers/mtd/devices/bcm47xxsflash.h

#ifndef __BCM47XXSFLASH_H

#define __BCM47XXSFLASH_H

#include <linux/mtd/mtd.h>

/* 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

struct bcma_drv_cc;


enum bcm47xxsflash_type {
	
BCM47XXSFLASH_TYPE_ATMEL,
	
BCM47XXSFLASH_TYPE_ST,
};


struct bcm47xxsflash {
	
struct bcma_drv_cc *bcma_cc;
	
int (*cc_read)(struct bcm47xxsflash *b47s, u16 offset);
	
void (*cc_write)(struct bcm47xxsflash *b47s, u16 offset, u32 value);

	
enum bcm47xxsflash_type type;

	
void __iomem *window;

	
u32 blocksize;
	
u16 numblocks;
	
u32 size;

	
struct mtd_info mtd;
};

#endif /* BCM47XXSFLASH */

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