301765846b
This adds a driver for SPI master by GPIO pins. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
37 lines
960 B
C
37 lines
960 B
C
/*
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* SPI master driver using generic bitbanged GPIO
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*
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* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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*
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* Based on Linux driver
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* Copyright (C) 2006,2008 David Brownell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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#ifndef __SPI_GPIO_H
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#define __SPI_GPIO_H
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#define MAX_CHIPSELECT 4
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#define SPI_GPIO_NO_CS (-1)
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#define SPI_GPIO_NO_MISO (-1)
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#define SPI_GPIO_NO_MOSI (-1)
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struct gpio_spi_pdata {
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int sck;
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int mosi;
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int miso;
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int cs[MAX_CHIPSELECT];
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int num_cs;
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};
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#endif
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