51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Header File for Altera SPI Driver.
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*/
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#ifndef __LINUX_SPI_ALTERA_H
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#define __LINUX_SPI_ALTERA_H
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#include <linux/interrupt.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#include <linux/types.h>
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#define ALTERA_SPI_MAX_CS 32
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/**
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* struct altera_spi_platform_data - Platform data of the Altera SPI driver
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* @mode_bits: Mode bits of SPI host.
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* @num_chipselect: Number of chipselects.
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* @bits_per_word_mask: bitmask of supported bits_per_word for transfers.
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* @num_devices: Number of devices that shall be added when the driver
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* is probed.
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* @devices: The devices to add.
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*/
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struct altera_spi_platform_data {
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u16 mode_bits;
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u16 num_chipselect;
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u32 bits_per_word_mask;
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u16 num_devices;
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struct spi_board_info *devices;
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};
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struct altera_spi {
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int irq;
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int len;
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int count;
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int bytes_per_word;
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u32 imr;
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/* data buffers */
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const unsigned char *tx;
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unsigned char *rx;
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struct regmap *regmap;
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u32 regoff;
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struct device *dev;
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};
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extern irqreturn_t altera_spi_irq(int irq, void *dev);
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extern void altera_spi_init_host(struct spi_controller *host);
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#endif /* __LINUX_SPI_ALTERA_H */
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