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Add enum argument to SPI select method

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1666 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2009-03-29 18:02:35 +00:00
parent c520a9867c
commit 04f44cd858
4 changed files with 60 additions and 36 deletions
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include/nuttx/spi.h
+21 -5
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@@ -53,17 +53,22 @@
* Name: SPI_SELECT
*
* Description:
* Enable/disable the SPI chip select. Required.
* Enable/disable the SPI chip select. The implementation of this method
* must include handshaking: If a device is selected, it must hold off
* all other attempts to select the device until the device is deselected.
* Required.
*
* Input Parameters:
* select: TRUE: chip selected, FALSE: chip de-selected
* dev - Device-specific state data
* devid - Identifies the device to select
* selected - TRUE: slave selected, FALSE: slave de-selected
*
* Returned Value:
* None
*
****************************************************************************/
#define SPI_SELECT(d,b) ((d)->ops->select(d,b))
#define SPI_SELECT(d,id,s) ((d)->ops->select(d,id,s))
/****************************************************************************
* Name: SPI_SETFREQUENCY
@@ -183,12 +188,23 @@
typedef void (*mediachange_t)(void *arg);
/* If the board supports multiple SPI devices, this enumeration identifies
* which is selected or de-seleted.
*/
enum spidev_e
{
SPIDEV_NONE = 0, /* Not a valid value */
SPIDEV_MMCSD, /* Select SPI MMC/SD device */
SPIDEV_ETHERNET /* Select SPI ethernet device */
};
/* The SPI vtable */
struct spi_dev_s;
struct spi_ops_s
{
void (*select)(FAR struct spi_dev_s *dev, boolean selected);
void (*select)(FAR struct spi_dev_s *dev, enum spidev_e devid, boolean selected);
uint32 (*setfrequency)(FAR struct spi_dev_s *dev, uint32 frequency);
ubyte (*status)(FAR struct spi_dev_s *dev);
ubyte (*sndbyte)(FAR struct spi_dev_s *dev, ubyte ch);
@@ -223,7 +239,7 @@ extern "C" {
* Name: up_spiinitialize
*
* Description:
* Initialize the selected SPI port
* Initialize the selected SPI port.
*
* Input Parameter:
* Port number (for hardware that has mutiple SPI interfaces)