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Diffstat (limited to 'include/linux/spi/altera.h')
| -rw-r--r-- | include/linux/spi/altera.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/spi/altera.h b/include/linux/spi/altera.h new file mode 100644 index 000000000000..2e2a622e56da --- /dev/null +++ b/include/linux/spi/altera.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Header File for Altera SPI Driver. + */ +#ifndef __LINUX_SPI_ALTERA_H +#define __LINUX_SPI_ALTERA_H + +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/spi/spi.h> +#include <linux/types.h> + +#define ALTERA_SPI_MAX_CS 32 + +/** + * struct altera_spi_platform_data - Platform data of the Altera SPI driver + * @mode_bits: Mode bits of SPI master. + * @num_chipselect: Number of chipselects. + * @bits_per_word_mask: bitmask of supported bits_per_word for transfers. + * @num_devices: Number of devices that shall be added when the driver + * is probed. + * @devices: The devices to add. + */ +struct altera_spi_platform_data { + u16 mode_bits; + u16 num_chipselect; + u32 bits_per_word_mask; + u16 num_devices; + struct spi_board_info *devices; +}; + +struct altera_spi { + int irq; + int len; + int count; + int bytes_per_word; + u32 imr; + + /* data buffers */ + const unsigned char *tx; + unsigned char *rx; + + struct regmap *regmap; + u32 regoff; + struct device *dev; +}; + +extern irqreturn_t altera_spi_irq(int irq, void *dev); +extern void altera_spi_init_master(struct spi_master *master); +#endif /* __LINUX_SPI_ALTERA_H */ |