[U-Boot] [PATCH] sf: probe: Add support to set Quad enable bit for ISSI

[Siva Durga Prasad Paladugu]

Added support to set the quad enable bit in status register
for ISSI parts. Tis would be same as for Macronix parts.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
---
- This patch is based on u-boot-spi/master
---
 drivers/mtd/spi/sf_internal.h |    1 +
 drivers/mtd/spi/sf_probe.c    |    5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index 9c95d56..a995d9b 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -60,6 +60,7 @@ enum {
 #define SPI_FLASH_CFI_MFR_STMICRO	0x20
 #define SPI_FLASH_CFI_MFR_MACRONIX	0xc2
 #define SPI_FLASH_CFI_MFR_WINBOND	0xef
+#define SPI_FLASH_CFI_MFR_ISSI		0x9d
 
 /* Erase commands */
 #define CMD_ERASE_4K			0x20
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index 954376d..b4f8a33 100644
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -32,7 +32,7 @@ static u8 spi_read_cmds_array[] = {
 	CMD_READ_QUAD_IO_FAST,
 };
 
-#ifdef CONFIG_SPI_FLASH_MACRONIX
+#if defined(CONFIG_SPI_FLASH_MACRONIX) || defined(CONFIG_SPI_FLASH_ISSI)
 static int spi_flash_set_qeb_mxic(struct spi_flash *flash)
 {
 	u8 qeb_status;
@@ -79,8 +79,9 @@ static int spi_flash_set_qeb_winspan(struct spi_flash *flash)
 static int spi_flash_set_qeb(struct spi_flash *flash, u8 idcode0)
 {
 	switch (idcode0) {
-#ifdef CONFIG_SPI_FLASH_MACRONIX
+#if defined(CONFIG_SPI_FLASH_MACRONIX) || defined(CONFIG_SPI_FLASH_ISSI)
 	case SPI_FLASH_CFI_MFR_MACRONIX:
+	case SPI_FLASH_CFI_MFR_ISSI:
 		return spi_flash_set_qeb_mxic(flash);
 #endif
 #if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
-- 
1.7.1