2acc0ac542
later. We still need to hunt down snippets used that are not. 1324 modified files... http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (c) 2007 Will Robertson
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef SPI_IMX31_H
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#define SPI_IMX31_H
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#define USE_CSPI1_MODULE (1 << 0)
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#define USE_CSPI2_MODULE (1 << 1)
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#define USE_CSPI3_MODULE (1 << 2)
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/* SPI_MODULE_MASK is set in target's config */
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enum spi_module_number
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{
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__CSPI_NUM_START = -1, /* The first will be 0 */
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#if (SPI_MODULE_MASK & USE_CSPI1_MODULE)
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CSPI1_NUM,
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#endif
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#if (SPI_MODULE_MASK & USE_CSPI2_MODULE)
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CSPI2_NUM,
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#endif
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#if (SPI_MODULE_MASK & USE_CSPI3_MODULE)
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CSPI3_NUM,
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#endif
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SPI_NUM_CSPI,
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};
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struct cspi_map
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{
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volatile uint32_t rxdata; /* 00h */
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volatile uint32_t txdata; /* 04h */
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volatile uint32_t conreg; /* 08h */
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volatile uint32_t intreg; /* 0Ch */
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volatile uint32_t dmareg; /* 10h */
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volatile uint32_t statreg; /* 14h */
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volatile uint32_t periodreg; /* 18h */
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volatile uint32_t skip1[0x69]; /* 1Ch */
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volatile uint32_t testreg; /* 1C0h */
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};
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struct spi_node
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{
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enum spi_module_number num; /* Module number (CSPIx_NUM) */
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unsigned long conreg; /* CSPI conreg setup */
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unsigned long periodreg; /* CSPI periodreg setup */
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};
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struct spi_transfer
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{
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const void *txbuf;
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void *rxbuf;
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int count;
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};
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/* One-time init of SPI driver */
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void spi_init(void);
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/* Enable the specified module for the node */
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void spi_enable_module(struct spi_node *node);
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/* Disabled the specified module for the node */
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void spi_disable_module(struct spi_node *node);
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/* Lock module mutex */
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void spi_lock(struct spi_node *node);
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/* Unlock module mutex */
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void spi_unlock(struct spi_node *node);
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/* Send and/or receive data on the specified node */
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int spi_transfer(struct spi_node *node, struct spi_transfer *trans);
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#endif /* SPI_IMX31_H */
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