[v3,1/7] mtd: spi-nor: copy the SPI NOR commands to a new header file

Commit Message

Huang Shijie Dec. 16, 2013, 8:58 a.m. UTC

This patch adds a new header :spi-nor.h,
and copies all the SPI NOR commands and relative macros into this new header.

This hearder can be used by the m25p80.c and other spi-nor controller,
such as Freescale's Quadspi.

Signed-off-by: Huang Shijie <[e-mail]>
---
 include/linux/mtd/spi-nor.h |   53 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)
 create mode 100644 include/linux/mtd/spi-nor.h

Comments

Marek Vasut Dec. 17, 2013, 1:01 p.m. UTC | #1

On Monday, December 16, 2013 at 09:58:44 AM, Huang Shijie wrote:
> This patch adds a new header :spi-nor.h,
> and copies all the SPI NOR commands and relative macros into this new
> header.
> 
> This hearder can be used by the m25p80.c and other spi-nor controller,
> such as Freescale's Quadspi.
> 
> Signed-off-by: Huang Shijie <[e-mail]>

It would be much nicer if you also removed the commands in this same patch from 
the m25p80.c file.

Best regards,
Marek Vasut
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Huang Shijie Dec. 17, 2013, 2:12 p.m. UTC | #2

On Tue, Dec 17, 2013 at 02:01:56PM +0100, Marek Vasut wrote:
> On Monday, December 16, 2013 at 09:58:44 AM, Huang Shijie wrote:
> > This patch adds a new header :spi-nor.h,
> > and copies all the SPI NOR commands and relative macros into this new
> > header.
> > 
> > This hearder can be used by the m25p80.c and other spi-nor controller,
> > such as Freescale's Quadspi.
> > 
> > Signed-off-by: Huang Shijie <[e-mail]>
> 
> It would be much nicer if you also removed the commands in this same patch from 
> the m25p80.c file.
my earlier version did so. :)

So keep it as it is now.

thanks
Huang Shijie


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Patch

diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
new file mode 100644
index 0000000..ab2ea1e
--- /dev/null
+++ b/include/linux/mtd/spi-nor.h
@@ -0,0 +1,53 @@ 
+#ifndef __LINUX_MTD_SPI_NOR_H
+#define __LINUX_MTD_SPI_NOR_H
+
+/* Flash opcodes. */
+#define	OPCODE_WREN		0x06	/* Write enable */
+#define	OPCODE_RDSR		0x05	/* Read status register */
+#define	OPCODE_WRSR		0x01	/* Write status register 1 byte */
+#define	OPCODE_NORM_READ	0x03	/* Read data bytes (low frequency) */
+#define	OPCODE_FAST_READ	0x0b	/* Read data bytes (high frequency) */
+#define	OPCODE_QUAD_READ        0x6b    /* Read data bytes */
+#define	OPCODE_PP		0x02	/* Page program (up to 256 bytes) */
+#define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
+#define	OPCODE_BE_4K_PMC	0xd7	/* Erase 4KiB block on PMC chips */
+#define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
+#define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
+#define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
+#define	OPCODE_RDID		0x9f	/* Read JEDEC ID */
+#define	OPCODE_RDCR             0x35    /* Read configuration register */
+
+/* 4-byte address opcodes - used on Spansion and some Macronix flashes. */
+#define	OPCODE_NORM_READ_4B	0x13	/* Read data bytes (low frequency) */
+#define	OPCODE_FAST_READ_4B	0x0c	/* Read data bytes (high frequency) */
+#define	OPCODE_QUAD_READ_4B	0x6c    /* Read data bytes */
+#define	OPCODE_PP_4B		0x12	/* Page program (up to 256 bytes) */
+#define	OPCODE_SE_4B		0xdc	/* Sector erase (usually 64KiB) */
+
+/* Used for SST flashes only. */
+#define	OPCODE_BP		0x02	/* Byte program */
+#define	OPCODE_WRDI		0x04	/* Write disable */
+#define	OPCODE_AAI_WP		0xad	/* Auto address increment word program */
+
+/* Used for Macronix and Winbond flashes. */
+#define	OPCODE_EN4B		0xb7	/* Enter 4-byte mode */
+#define	OPCODE_EX4B		0xe9	/* Exit 4-byte mode */
+
+/* Used for Spansion flashes only. */
+#define	OPCODE_BRWR		0x17	/* Bank register write */
+
+/* Status Register bits. */
+#define	SR_WIP			1	/* Write in progress */
+#define	SR_WEL			2	/* Write enable latch */
+/* meaning of other SR_* bits may differ between vendors */
+#define	SR_BP0			4	/* Block protect 0 */
+#define	SR_BP1			8	/* Block protect 1 */
+#define	SR_BP2			0x10	/* Block protect 2 */
+#define	SR_SRWD			0x80	/* SR write protect */
+
+#define SR_QUAD_EN_MX           0x40    /* Macronix Quad I/O */
+
+/* Configuration Register bits. */
+#define CR_QUAD_EN_SPAN		0x2     /* Spansion Quad I/O */
+
+#endif