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mtd: devices: Provide header for shared OPCODEs and SFDP commands 

JEDEC have helped to standardise a great deal of the commands which
can be issued to a Serial Flash devices. Many of the Serial Flash
Discoverable Parameters (SFDP) commands are generic across devices.
This patch provides a shared point where these commands can be
defined.

Suggested-by: Mark Brown <broonie@kernel.org>
Acked-by Angus Clark <angus.clark@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Lee Jones 2014-03-20 09:20:39 +00:00 committed by Brian Norris
parent 1bd512b562
commit 5549fbd514
2 changed files with 83 additions and 0 deletions
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81
drivers/mtd/devices/serial_flash_cmds.h Normal file
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@ -0,0 +1,81 @@
/*
* Generic/SFDP Flash Commands and Device Capabilities
*
* Copyright (C) 2013 Lee Jones <lee.jones@lianro.org>
*
* This code is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#ifndef _MTD_SERIAL_FLASH_CMDS_H
#define _MTD_SERIAL_FLASH_CMDS_H
/* Generic Flash Commands/OPCODEs */
#define FLASH_CMD_WREN 0x06
#define FLASH_CMD_WRDI 0x04
#define FLASH_CMD_RDID 0x9f
#define FLASH_CMD_RDSR 0x05
#define FLASH_CMD_RDSR2 0x35
#define FLASH_CMD_WRSR 0x01
#define FLASH_CMD_SE_4K 0x20
#define FLASH_CMD_SE_32K 0x52
#define FLASH_CMD_SE 0xd8
#define FLASH_CMD_CHIPERASE 0xc7
#define FLASH_CMD_WRVCR 0x81
#define FLASH_CMD_RDVCR 0x85
/* JEDEC Standard - Serial Flash Discoverable Parmeters (SFDP) Commands */
#define FLASH_CMD_READ 0x03 /* READ */
#define FLASH_CMD_READ_FAST 0x0b /* FAST READ */
#define FLASH_CMD_READ_1_1_2 0x3b /* DUAL OUTPUT READ */
#define FLASH_CMD_READ_1_2_2 0xbb /* DUAL I/O READ */
#define FLASH_CMD_READ_1_1_4 0x6b /* QUAD OUTPUT READ */
#define FLASH_CMD_READ_1_4_4 0xeb /* QUAD I/O READ */
#define FLASH_CMD_WRITE 0x02 /* PAGE PROGRAM */
#define FLASH_CMD_WRITE_1_1_2 0xa2 /* DUAL INPUT PROGRAM */
#define FLASH_CMD_WRITE_1_2_2 0xd2 /* DUAL INPUT EXT PROGRAM */
#define FLASH_CMD_WRITE_1_1_4 0x32 /* QUAD INPUT PROGRAM */
#define FLASH_CMD_WRITE_1_4_4 0x12 /* QUAD INPUT EXT PROGRAM */
#define FLASH_CMD_EN4B_ADDR 0xb7 /* Enter 4-byte address mode */
#define FLASH_CMD_EX4B_ADDR 0xe9 /* Exit 4-byte address mode */
/* READ commands with 32-bit addressing */
#define FLASH_CMD_READ4 0x13
#define FLASH_CMD_READ4_FAST 0x0c
#define FLASH_CMD_READ4_1_1_2 0x3c
#define FLASH_CMD_READ4_1_2_2 0xbc
#define FLASH_CMD_READ4_1_1_4 0x6c
#define FLASH_CMD_READ4_1_4_4 0xec
/* Configuration flags */
#define FLASH_FLAG_SINGLE 0x000000ff
#define FLASH_FLAG_READ_WRITE 0x00000001
#define FLASH_FLAG_READ_FAST 0x00000002
#define FLASH_FLAG_SE_4K 0x00000004
#define FLASH_FLAG_SE_32K 0x00000008
#define FLASH_FLAG_CE 0x00000010
#define FLASH_FLAG_32BIT_ADDR 0x00000020
#define FLASH_FLAG_RESET 0x00000040
#define FLASH_FLAG_DYB_LOCKING 0x00000080
#define FLASH_FLAG_DUAL 0x0000ff00
#define FLASH_FLAG_READ_1_1_2 0x00000100
#define FLASH_FLAG_READ_1_2_2 0x00000200
#define FLASH_FLAG_READ_2_2_2 0x00000400
#define FLASH_FLAG_WRITE_1_1_2 0x00001000
#define FLASH_FLAG_WRITE_1_2_2 0x00002000
#define FLASH_FLAG_WRITE_2_2_2 0x00004000
#define FLASH_FLAG_QUAD 0x00ff0000
#define FLASH_FLAG_READ_1_1_4 0x00010000
#define FLASH_FLAG_READ_1_4_4 0x00020000
#define FLASH_FLAG_READ_4_4_4 0x00040000
#define FLASH_FLAG_WRITE_1_1_4 0x00100000
#define FLASH_FLAG_WRITE_1_4_4 0x00200000
#define FLASH_FLAG_WRITE_4_4_4 0x00400000
#endif /* _MTD_SERIAL_FLASH_CMDS_H */

2
drivers/mtd/devices/st_spi_fsm.c
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@ -21,6 +21,8 @@
#include <linux/io.h>
#include <linux/of.h>
#include "serial_flash_cmds.h"
/*
* FSM SPI Controller Registers
*/