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authorJagan Teki <jteki@openedev.com>2015-12-29 12:12:30 +0530
committerJagan Teki <jteki@openedev.com>2016-01-13 18:47:27 +0530
commit465c00d78e57209fb11ba5e6bc6abfc501ed07de (patch)
tree32f253f3009885178b1a6026fc5afe1925c7023e /include/spi.h
parent29ee0262e11d73c3602d9f0a5a8f1030e76008c1 (diff)
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spi: Minor cleanup
- Add comments on mode_rx - Tab space's Cc: Simon Glass <sjg@chromium.org> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Tested-by: Mugunthan V N <mugunthanvnm@ti.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
Diffstat (limited to 'include/spi.h')
-rw-r--r--include/spi.h32
1 files changed, 16 insertions, 16 deletions
diff --git a/include/spi.h b/include/spi.h
index dbd0df8..80f8523 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -11,26 +11,26 @@
#define _SPI_H_
/* SPI mode flags */
-#define SPI_CPHA BIT(0) /* clock phase */
-#define SPI_CPOL BIT(1) /* clock polarity */
-#define SPI_MODE_0 (0|0) /* (original MicroWire) */
-#define SPI_MODE_1 (0|SPI_CPHA)
-#define SPI_MODE_2 (SPI_CPOL|0)
-#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA)
-#define SPI_CS_HIGH BIT(2) /* CS active high */
-#define SPI_LSB_FIRST BIT(3) /* per-word bits-on-wire */
-#define SPI_3WIRE BIT(4) /* SI/SO signals shared */
-#define SPI_LOOP BIT(5) /* loopback mode */
-#define SPI_SLAVE BIT(6) /* slave mode */
-#define SPI_PREAMBLE BIT(7) /* Skip preamble bytes */
+#define SPI_CPHA BIT(0) /* clock phase */
+#define SPI_CPOL BIT(1) /* clock polarity */
+#define SPI_MODE_0 (0|0) /* (original MicroWire) */
+#define SPI_MODE_1 (0|SPI_CPHA)
+#define SPI_MODE_2 (SPI_CPOL|0)
+#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA)
+#define SPI_CS_HIGH BIT(2) /* CS active high */
+#define SPI_LSB_FIRST BIT(3) /* per-word bits-on-wire */
+#define SPI_3WIRE BIT(4) /* SI/SO signals shared */
+#define SPI_LOOP BIT(5) /* loopback mode */
+#define SPI_SLAVE BIT(6) /* slave mode */
+#define SPI_PREAMBLE BIT(7) /* Skip preamble bytes */
#define SPI_TX_BYTE BIT(8) /* transmit with 1 wire byte */
#define SPI_TX_QUAD BIT(9) /* transmit with 4 wires */
/* SPI mode_rx flags */
-#define SPI_RX_SLOW BIT(0)
-#define SPI_RX_FAST BIT(1)
-#define SPI_RX_DUAL BIT(2)
-#define SPI_RX_QUAD BIT(4)
+#define SPI_RX_SLOW BIT(0) /* receive with 1 wire slow */
+#define SPI_RX_FAST BIT(1) /* receive with 1 wire fast */
+#define SPI_RX_DUAL BIT(2) /* receive with 2 wires */
+#define SPI_RX_QUAD BIT(4) /* receive with 4 wires */
/* SPI bus connection options - see enum spi_dual_flash */
#define SPI_CONN_DUAL_SHARED (1 << 0)