sf: Add quad read/write commands support

This patch add quad commands support like
- QUAD_PAGE_PROGRAM => for write program
- QUAD_OUTPUT_FAST ->> for read program

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>

2 files changed, 17 insertions, 3 deletions

diff --git a/include/spi.h b/include/spi.h
index 31195a3..5dd490a 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -31,11 +31,16 @@
 #define SPI_XFER_MMAP_END	0x10	/* Memory Mapped End */
 #define SPI_XFER_ONCE		(SPI_XFER_BEGIN | SPI_XFER_END)
 
+/* SPI TX operation modes */
+#define SPI_OPM_TX_QPP		1 << 0
+
 /* SPI RX operation modes */
 #define SPI_OPM_RX_AS		1 << 0
 #define SPI_OPM_RX_DOUT		1 << 1
 #define SPI_OPM_RX_DIO		1 << 2
-#define SPI_OPM_RX_EXTN		SPI_OPM_RX_AS | SPI_OPM_RX_DOUT | SPI_OPM_RX_DIO
+#define SPI_OPM_RX_QOF		1 << 3
+#define SPI_OPM_RX_EXTN		SPI_OPM_RX_AS | SPI_OPM_RX_DOUT | \
+				SPI_OPM_RX_DIO | SPI_OPM_RX_QOF
 
 /* Header byte that marks the start of the message */
 #define SPI_PREAMBLE_END_BYTE	0xec
@@ -50,6 +55,7 @@
  * @bus:		ID of the bus that the slave is attached to.
  * @cs:			ID of the chip select connected to the slave.
  * @op_mode_rx:		SPI RX operation mode.
+ * @op_mode_tx:		SPI TX operation mode.
  * @wordlen:		Size of SPI word in number of bits
  * @max_write_size:	If non-zero, the maximum number of bytes which can
  *			be written at once, excluding command bytes.
@@ -59,6 +65,7 @@ struct spi_slave {
 	unsigned int bus;
 	unsigned int cs;
 	u8 op_mode_rx;
+	u8 op_mode_tx;
 	unsigned int wordlen;
 	unsigned int max_write_size;
 	void *memory_map;
diff --git a/include/spi_flash.h b/include/spi_flash.h
index 692e143..9fd9d3b 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -19,13 +19,18 @@
 #include <linux/types.h>
 #include <linux/compiler.h>
 
-/* Enum list - Extended read commands */
+/* No enum list for write commands only QPP */
+#define WR_QPP		1 << 4
+
+/* Enum list - Full read commands */
 enum spi_read_cmds {
 	ARRAY_SLOW = 1 << 0,
 	DUAL_OUTPUT_FAST = 1 << 1,
 	DUAL_IO_FAST = 1 << 2,
+	QUAD_OUTPUT_FAST = 1 << 3,
 };
 #define RD_EXTN		ARRAY_SLOW | DUAL_OUTPUT_FAST | DUAL_IO_FAST
+#define RD_FULL		RD_EXTN | QUAD_OUTPUT_FAST
 
 /**
  * struct spi_flash - SPI flash structure
@@ -41,7 +46,8 @@ enum spi_read_cmds {
  * @bank_curr:		Current flash bank
  * @poll_cmd:		Poll cmd - for flash erase/program
  * @erase_cmd:		Erase cmd 4K, 32K, 64K
- * @read_cmd:		Read cmd - Array Fast and Extn read
+ * @read_cmd:		Read cmd - Array Fast, Extn read and quad read.
+ * @write_cmd:		Write cmd - page and quad program.
  * @memory_map:		Address of read-only SPI flash access
  * @read:		Flash read ops: Read len bytes at offset into buf
  *			Supported cmds: Fast Array Read
@@ -67,6 +73,7 @@ struct spi_flash {
 	u8 poll_cmd;
 	u8 erase_cmd;
 	u8 read_cmd;
+	u8 write_cmd;
 
 	void *memory_map;
 	int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf);