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For i.MX1 MCUs, rename up_spiinitialize to imx_spibus_initialize

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This commit is contained in:
Gregory Nutt 2016-01-27 08:57:34 -06:00
parent bd5e6f784b
commit b4f0ad1af5
2 changed files with 37 additions and 8 deletions
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41
arch/arm/src/imx/imx_cspi.h
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@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/imx/imx_cspi.h
*
* Copyright (C) 2009-2010, 2015 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010, 2015-2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -177,10 +177,38 @@ extern "C"
* Public Functions
************************************************************************************/
/* The external functions, imx_spiselect, imx_spistatus, and imx_cmddaa must be
struct spi_dev_s; /* Forward reference */
enum spi_dev_e; /* Forward reference */
/****************************************************************************
* Name: imx_spibus_initialize
*
* Description:
* Initialize common parts the selected SPI port. Initialization of
* chip select GPIOs must have been performed by board specific logic
* prior to calling this function. Specifically: GPIOs should have
* been configured for output, and all chip selects disabled.
*
* One GPIO, SS (PB2 on the eZ8F091) is reserved as a chip select. However,
* If multiple devices on on the bus, then multiple chip selects will be
* required. Theregore, all GPIO chip management is deferred to board-
* specific logic.
*
* Input Parameter:
* Port number (for hardware that has mutiple SPI interfaces)
*
* Returned Value:
* Valid SPI device structre reference on succcess; a NULL on failure
*
****************************************************************************/
FAR struct spi_dev_s *imx_spibus_initialize(int port);
/****************************************************************************
* The external functions, imx_spiselect, imx_spistatus, and imx_cmddaa must be
* provided by board-specific logic. These are implementations of the select and
* status methods of the SPI interface defined by struct spi_ops_s (see
* include/nuttx/spi/spi.h). All other methods (including up_spiinitialize()) are
* include/nuttx/spi/spi.h). All other methods (including imx_spibus_initialize()) are
* provided by common logic. To use this common SPI logic on your board:
*
* 1. Provide imx_spiselect() and imx_spistatus() functions in your board-specific
@ -190,11 +218,12 @@ extern "C"
* imx_spicmddata() function in your board-specific logic. This function will
* perform cmd/data selection operations using GPIOs in the way your board is
* configured.
* 3. Add a call to up_spiinitialize() in your low level initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* 3. Add a call to imx_spibus_initialize() in your low level initialization logic
* 4. The handle returned by imx_spibus_initialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling mmcsd_spislotinitialize(),
* for example, will bind the SPI driver to the SPI MMC/SD driver).
*/
*
****************************************************************************/
void imx_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
uint8_t imx_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);

4
arch/arm/src/imx/imx_spi.c
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@ -1010,7 +1010,7 @@ static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *buffer, size_t nw
****************************************************************************/
/****************************************************************************
* Name: up_spiinitialize
* Name: imx_spibus_initialize
*
* Description:
* Initialize common parts the selected SPI port. Initialization of
@ -1031,7 +1031,7 @@ static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *buffer, size_t nw
*
****************************************************************************/
FAR struct spi_dev_s *up_spiinitialize(int port)
FAR struct spi_dev_s *imx_spibus_initialize(int port)
{
struct imx_spidev_s *priv;
uint8_t regval;