[U-Boot] [PATCH 2/4] spi: cadence_quadspi: Enable QUAD mode based on DT data

[Vignesh R]

Instead of relying on CONFIG_SPI_FLASH_QUAD to be defined to enable QUAD
mode, make use of mode_rx field of dm_spi_slave_platdata to determine
whether to enable or disable QUAD mode. This is necessary to support
muliple SPI controllers where one of them may not support QUAD mode.

Signed-off-by: Vignesh R <vigneshr at ti.com>
---
 drivers/spi/cadence_qspi.c     |  3 ++-
 drivers/spi/cadence_qspi.h     |  2 +-
 drivers/spi/cadence_qspi_apb.c | 10 +++++-----
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 4f7fd5253220..a5244fff4d95 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -191,6 +191,7 @@ static int cadence_spi_xfer(struct udevice *dev, unsigned int bitlen,
 	struct udevice *bus = dev->parent;
 	struct cadence_spi_platdata *plat = bus->platdata;
 	struct cadence_spi_priv *priv = dev_get_priv(bus);
+	struct dm_spi_slave_platdata *dm_plat = dev_get_parent_platdata(dev);
 	void *base = priv->regbase;
 	u8 *cmd_buf = priv->cmd_buf;
 	size_t data_bytes;
@@ -250,7 +251,7 @@ static int cadence_spi_xfer(struct udevice *dev, unsigned int bitlen,
 		break;
 		case CQSPI_INDIRECT_READ:
 			err = cadence_qspi_apb_indirect_read_setup(plat,
-				priv->cmd_len, cmd_buf);
+				priv->cmd_len, dm_plat->mode_rx, cmd_buf);
 			if (!err) {
 				err = cadence_qspi_apb_indirect_read_execute
 				(plat, data_bytes, din);
diff --git a/drivers/spi/cadence_qspi.h b/drivers/spi/cadence_qspi.h
index 2912e36a53f7..a849f7b19973 100644
--- a/drivers/spi/cadence_qspi.h
+++ b/drivers/spi/cadence_qspi.h
@@ -53,7 +53,7 @@ int cadence_qspi_apb_command_write(void *reg_base_addr,
 	unsigned int txlen,  const u8 *txbuf);
 
 int cadence_qspi_apb_indirect_read_setup(struct cadence_spi_platdata *plat,
-	unsigned int cmdlen, const u8 *cmdbuf);
+	unsigned int cmdlen, unsigned int rx_width, const u8 *cmdbuf);
 int cadence_qspi_apb_indirect_read_execute(struct cadence_spi_platdata *plat,
 	unsigned int rxlen, u8 *rxbuf);
 int cadence_qspi_apb_indirect_write_setup(struct cadence_spi_platdata *plat,
diff --git a/drivers/spi/cadence_qspi_apb.c b/drivers/spi/cadence_qspi_apb.c
index a31b43b0114d..b8cf8277e1ee 100644
--- a/drivers/spi/cadence_qspi_apb.c
+++ b/drivers/spi/cadence_qspi_apb.c
@@ -28,6 +28,7 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/errno.h>
+#include <spi.h>
 #include "cadence_qspi.h"
 
 #define CQSPI_REG_POLL_US			(1) /* 1us */
@@ -669,7 +670,7 @@ int cadence_qspi_apb_command_write(void *reg_base, unsigned int cmdlen,
 
 /* Opcode + Address (3/4 bytes) + dummy bytes (0-4 bytes) */
 int cadence_qspi_apb_indirect_read_setup(struct cadence_spi_platdata *plat,
-	unsigned int cmdlen, const u8 *cmdbuf)
+	unsigned int cmdlen, unsigned int rx_width, const u8 *cmdbuf)
 {
 	unsigned int reg;
 	unsigned int rd_reg;
@@ -699,10 +700,9 @@ int cadence_qspi_apb_indirect_read_setup(struct cadence_spi_platdata *plat,
 	/* Configure the opcode */
 	rd_reg = cmdbuf[0] << CQSPI_REG_RD_INSTR_OPCODE_LSB;
 
-#if (CONFIG_SPI_FLASH_QUAD == 1)
-	/* Instruction and address at DQ0, data at DQ0-3. */
-	rd_reg |= CQSPI_INST_TYPE_QUAD << CQSPI_REG_RD_INSTR_TYPE_DATA_LSB;
-#endif
+	if (rx_width & SPI_RX_QUAD)
+		/* Instruction and address at DQ0, data at DQ0-3. */
+		rd_reg |= CQSPI_INST_TYPE_QUAD << CQSPI_REG_RD_INSTR_TYPE_DATA_LSB;
 
 	/* Get address */
 	addr_value = cadence_qspi_apb_cmd2addr(&cmdbuf[1], addr_bytes);
-- 
2.8.1