ba6c3ce9bd
At present it is difficult to extend the SPI structure since all drivers allocate it themselves, and few of them zero all fields. Add a new function spi_alloc_slave() which can be used by SPI drivers to perform this allocation, and thus ensure that all drivers can better cope with SPI structure changes. Signed-off-by: Simon Glass <sjg@chromium.org>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but without any warranty; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <spi.h>
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void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
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unsigned int cs)
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{
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struct spi_slave *slave;
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void *ptr;
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ptr = malloc(size);
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if (ptr) {
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memset(ptr, '\0', size);
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slave = (struct spi_slave *)(ptr + offset);
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slave->bus = bus;
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slave->cs = cs;
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}
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return ptr;
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}
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