sf: Add extended read commands support
Current sf uses FAST_READ command, this patch adds support to
use the different/extended read command.
This implementation will determine the fastest command by taking
the supported commands from the flash and the controller, controller
is always been a priority.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
diff --git a/include/spi.h b/include/spi.h
index aba7922..31195a3 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -31,6 +31,12 @@
#define SPI_XFER_MMAP_END 0x10 /* Memory Mapped End */
#define SPI_XFER_ONCE (SPI_XFER_BEGIN | SPI_XFER_END)
+/* 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
+
/* Header byte that marks the start of the message */
#define SPI_PREAMBLE_END_BYTE 0xec
@@ -43,6 +49,7 @@
*
* @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.
* @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.
@@ -51,6 +58,7 @@
struct spi_slave {
unsigned int bus;
unsigned int cs;
+ u8 op_mode_rx;
unsigned int wordlen;
unsigned int max_write_size;
void *memory_map;