[U-Boot] [PATCH v3 1/4] QuadSPI: use QSPI_CMD_xx instead of flash opcodes

14 Oct 2014

Use QSPI_CMD_xx instead of flash opcodes
Signed-off-by: Peng Fan Peng.Fan@freescale.com
---
Changelog v3:
 Use QSPI_CMD_XX instead of flash opcodes. To fsl qspi controller, the LUT
 should be pre programmed with QSPI CMD.
Changelog v2:
 none
drivers/spi/fsl_qspi.c | 64 ++++++++++++++++++++++++++------------------------
 1 file changed, 33 insertions(+), 31 deletions(-)

diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c
index ba20bef..61490c9 100644
--- a/drivers/spi/fsl_qspi.c
+++ b/drivers/spi/fsl_qspi.c
@@ -29,19 +29,19 @@
 #define SEQID_PP		6
 #define SEQID_RDID		7
-/* Flash opcodes */
-#define OPCODE_PP		0x02	/* Page program (up to 256 bytes) */
-#define OPCODE_RDSR		0x05	/* Read status register */
-#define OPCODE_WREN		0x06	/* Write enable */
-#define OPCODE_FAST_READ	0x0b	/* Read data bytes (high frequency) */
-#define OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
-#define OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
-#define OPCODE_RDID		0x9f	/* Read JEDEC ID */
-
-/* 4-byte address opcodes - used on Spansion and some Macronix flashes */
-#define OPCODE_FAST_READ_4B	0x0c    /* Read data bytes (high frequency) */
-#define OPCODE_PP_4B		0x12    /* Page program (up to 256 bytes) */
-#define OPCODE_SE_4B		0xdc    /* Sector erase (usually 64KiB) */
+/* QSPI CMD */
+#define QSPI_CMD_PP		0x02	/* Page program (up to 256 bytes) */
+#define QSPI_CMD_RDSR		0x05	/* Read status register */
+#define QSPI_CMD_WREN		0x06	/* Write enable */
+#define QSPI_CMD_FAST_READ	0x0b	/* Read data bytes (high frequency) */
+#define QSPI_CMD_CHIP_ERASE	0xc7	/* Erase whole flash chip */
+#define QSPI_CMD_SE		0xd8	/* Sector erase (usually 64KiB) */
+#define QSPI_CMD_RDID		0x9f	/* Read JEDEC ID */
+
+/* 4-byte address QSPI CMD - used on Spansion and some Macronix flashes */
+#define QSPI_CMD_FAST_READ_4B	0x0c    /* Read data bytes (high frequency) */
+#define QSPI_CMD_PP_4B		0x12    /* Page program (up to 256 bytes) */
+#define QSPI_CMD_SE_4B		0xdc    /* Sector erase (usually 64KiB) */
#ifdef CONFIG_SYS_FSL_QSPI_LE
 #define qspi_read32		in_le32
@@ -94,7 +94,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Write Enable */
    lut_base = SEQID_WREN * 4;
-	qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_WREN) |
+	qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_WREN) |
    	PAD0(LUT_PAD1) | INSTR0(LUT_CMD));
    qspi_write32(&regs->lut[lut_base + 1], 0);
    qspi_write32(&regs->lut[lut_base + 2], 0);
@@ -103,13 +103,15 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
    /* Fast Read */
    lut_base = SEQID_FAST_READ * 4;
    if (FSL_QSPI_FLASH_SIZE  <= SZ_16M)
-		qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_FAST_READ) |
+		qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_FAST_READ) |
    		PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
    		PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
    else
-		qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_FAST_READ_4B) |
-			PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
-			PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
+		qspi_write32(&regs->lut[lut_base],
+			     OPRND0(QSPI_CMD_FAST_READ_4B) |
+			     PAD0(LUT_PAD1) | INSTR0(LUT_CMD) |
+			     OPRND1(ADDR32BIT) | PAD1(LUT_PAD1) |
+			     INSTR1(LUT_ADDR));
    qspi_write32(&regs->lut[lut_base + 1], OPRND0(8) | PAD0(LUT_PAD1) |
    	INSTR0(LUT_DUMMY) | OPRND1(RX_BUFFER_SIZE) | PAD1(LUT_PAD1) |
    	INSTR1(LUT_READ));
@@ -118,7 +120,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Read Status */
    lut_base = SEQID_RDSR * 4;
-	qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_RDSR) |
+	qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_RDSR) |
    	PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
    	PAD1(LUT_PAD1) | INSTR1(LUT_READ));
    qspi_write32(&regs->lut[lut_base + 1], 0);
@@ -128,11 +130,11 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
    /* Erase a sector */
    lut_base = SEQID_SE * 4;
    if (FSL_QSPI_FLASH_SIZE  <= SZ_16M)
-		qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_SE) |
+		qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_SE) |
    		PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
    		PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
    else
-		qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_SE_4B) |
+		qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_SE_4B) |
    		PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
    		PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
    qspi_write32(&regs->lut[lut_base + 1], 0);
@@ -141,7 +143,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Erase the whole chip */
    lut_base = SEQID_CHIP_ERASE * 4;
-	qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_CHIP_ERASE) |
+	qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_CHIP_ERASE) |
    	PAD0(LUT_PAD1) | INSTR0(LUT_CMD));
    qspi_write32(&regs->lut[lut_base + 1], 0);
    qspi_write32(&regs->lut[lut_base + 2], 0);
@@ -150,11 +152,11 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
    /* Page Program */
    lut_base = SEQID_PP * 4;
    if (FSL_QSPI_FLASH_SIZE  <= SZ_16M)
-		qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_PP) |
+		qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_PP) |
    		PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
    		PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
    else
-		qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_PP_4B) |
+		qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_PP_4B) |
    		PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
    		PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
    qspi_write32(&regs->lut[lut_base + 1], OPRND0(TX_BUFFER_SIZE) |
@@ -164,7 +166,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* READ ID */
    lut_base = SEQID_RDID * 4;
-	qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_RDID) |
+	qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_RDID) |
    	PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(8) |
    	PAD1(LUT_PAD1) | INSTR1(LUT_READ));
    qspi_write32(&regs->lut[lut_base + 1], 0);
@@ -454,22 +456,22 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
    		return 0;
    	}
-		if (qspi->cur_seqid == OPCODE_FAST_READ) {
+		if (qspi->cur_seqid == QSPI_CMD_FAST_READ) {
    		qspi->sf_addr = swab32(txbuf) & OFFSET_BITS_MASK;
-		} else if (qspi->cur_seqid == OPCODE_SE) {
+		} else if (qspi->cur_seqid == QSPI_CMD_SE) {
    		qspi->sf_addr = swab32(txbuf) & OFFSET_BITS_MASK;
    		qspi_op_se(qspi);
-		} else if (qspi->cur_seqid == OPCODE_PP) {
+		} else if (qspi->cur_seqid == QSPI_CMD_PP) {
    		pp_sfaddr = swab32(txbuf) & OFFSET_BITS_MASK;
    	}
    }
if (din) {
-		if (qspi->cur_seqid == OPCODE_FAST_READ)
+		if (qspi->cur_seqid == QSPI_CMD_FAST_READ)
    		qspi_op_read(qspi, din, bytes);
-		else if (qspi->cur_seqid == OPCODE_RDID)
+		else if (qspi->cur_seqid == QSPI_CMD_RDID)
    		qspi_op_rdid(qspi, din, bytes);
-		else if (qspi->cur_seqid == OPCODE_RDSR)
+		else if (qspi->cur_seqid == QSPI_CMD_RDSR)
    		qspi_op_rdsr(qspi, din);
    }
-- 
1.8.4



    