config: Add a default CONFIG_SYS_PROMPT

[karo-tx-uboot.git] / include / spi.h

diff --git a/include/spi.h b/include/spi.h
index c2086fc62e7f25631bbd9a55dc5933e98fbb73c6..ad9248bee02b30d4214baeb418048eef62ca8029 100644 (file)
--- a/include/spi.h
+++ b/include/spi.h
@@ -1,4 +1,6 @@
 /*
+ * Common SPI Interface: Controller-specific definitions
+ *
  * (C) Copyright 2001
  * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
  *
@@ -8,8 +10,6 @@
 #ifndef _SPI_H_
 #define _SPI_H_
 
-/* Controller-specific definitions: */
-
 /* SPI mode flags */
 #define        SPI_CPHA        0x01                    /* clock phase */
 #define        SPI_CPOL        0x02                    /* clock polarity */
@@ -25,24 +25,24 @@
 #define        SPI_PREAMBLE    0x80                    /* Skip preamble bytes */
 
 /* SPI transfer flags */
-#define SPI_XFER_BEGIN 0x01                    /* Assert CS before transfer */
-#define SPI_XFER_END   0x02                    /* Deassert CS after transfer */
-#define SPI_XFER_MMAP  0x08                    /* Memory Mapped start */
-#define SPI_XFER_MMAP_END      0x10            /* Memory Mapped End */
+#define SPI_XFER_BEGIN         0x01    /* Assert CS before transfer */
+#define SPI_XFER_END           0x02    /* Deassert CS after transfer */
+#define SPI_XFER_MMAP          0x08    /* Memory Mapped start */
+#define SPI_XFER_MMAP_END      0x10    /* Memory Mapped End */
 
 /* Header byte that marks the start of the message */
-#define SPI_PREAMBLE_END_BYTE          0xec
+#define SPI_PREAMBLE_END_BYTE  0xec
 
 /**
- * struct spi_slave: Representation of a SPI slave,
- *                   i.e. what we're communicating with.
+ * struct spi_slave - Representation of a SPI slave
  *
  * Drivers are expected to extend this with controller-specific data.
  *
- *   bus:      ID of the bus that the slave is attached to.
- *   cs:       ID of the chip select connected to the slave.
- *   max_write_size:   If non-zero, the maximum number of bytes which can
- *             be written at once, excluding command bytes.
+ * @bus:               ID of the bus that the slave is attached to.
+ * @cs:                        ID of the chip select connected to the slave.
+ * @max_write_size:    If non-zero, the maximum number of bytes which can
+ *                     be written at once, excluding command bytes.
+ * @memory_map:                Address of read-only SPI flash access.
  */
 struct spi_slave {
        unsigned int bus;
@@ -241,11 +241,11 @@ static inline int spi_w8r8(struct spi_slave *slave, unsigned char byte)
  * This calls spi_setup_slave() with the correct bus number. Call
  * spi_free_slave() to free it later.
  *
- * @param blob         Device tree blob
- * @param node         SPI peripheral node to use
- * @param cs           Chip select to use
- * @param max_hz       Maximum SCK rate in Hz (0 for default)
- * @param mode         Clock polarity, clock phase and other parameters
+ * @param blob:                Device tree blob
+ * @param node:                SPI peripheral node to use
+ * @param cs:          Chip select to use
+ * @param max_hz:      Maximum SCK rate in Hz (0 for default)
+ * @param mode:                Clock polarity, clock phase and other parameters
  * @return pointer to new spi_slave structure
  */
 struct spi_slave *spi_setup_slave_fdt(const void *blob, int node,