[PATCH 08/23] mtd: devices: Provide header for shared OPCODEs and SFDP commands

[Lee Jones]

JEDEC have helped to standardise a great deal of the commands which
can be issued to a Serial Flash devices. Many of the OPCODEs and all
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 at kernel.org>
Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 drivers/mtd/devices/serial_flash_cmds.h | 91 +++++++++++++++++++++++++++++++++
 drivers/mtd/devices/st_spi_fsm.c        |  1 +
 drivers/mtd/devices/st_spi_fsm.h        |  2 +
 3 files changed, 94 insertions(+)
 create mode 100644 drivers/mtd/devices/serial_flash_cmds.h

diff --git a/drivers/mtd/devices/serial_flash_cmds.h b/drivers/mtd/devices/serial_flash_cmds.h
new file mode 100644
index 0000000..e3507b2
--- /dev/null
+++ b/drivers/mtd/devices/serial_flash_cmds.h
@@ -0,0 +1,91 @@
+/*
+ * Generic/SFDP Flash Commands and Device Capabilities
+ *
+ * Copyright (C) 2013 Lee Jones <lee.jones at lianro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#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_32BITADDR	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 */
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index f937329..ddab76f 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -24,6 +24,7 @@
 #include <asm/io.h>
 
 #include "st_spi_fsm.h"
+#include "serial_flash_cmds.h"
 
 static struct stfsm_seq stfsm_seq_read_jedec = {
 	.data_size = TRANSFER_SIZE(8),
diff --git a/drivers/mtd/devices/st_spi_fsm.h b/drivers/mtd/devices/st_spi_fsm.h
index 97b4868..5c6c55e 100644
--- a/drivers/mtd/devices/st_spi_fsm.h
+++ b/drivers/mtd/devices/st_spi_fsm.h
@@ -16,6 +16,8 @@
 #ifndef ST_SPI_FSM_H
 #define ST_SPI_FSM_H
 
+#include "serial_flash_cmds.h"
+
 /*
  * FSM SPI Controller Registers
  */
-- 
1.8.1.2