mtd: spi-nor: copy the SPI NOR commands to a new header file

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 <b32955@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
new file mode 100644
index 000000000000..483fc2a086c4
--- /dev/null
+++ b/include/linux/mtd/spi-nor.h
@@ -0,0 +1,55 @@
+#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_DUAL_READ        0x3b    /* Read data bytes (Dual SPI) */
+#define OPCODE_QUAD_READ        0x6b    /* Read data bytes (Quad SPI) */
+#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_DUAL_READ_4B     0x3c    /* Read data bytes (Dual SPI) */
+#define OPCODE_QUAD_READ_4B     0x6c    /* Read data bytes (Quad SPI) */
+#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