projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 8e04187c XY |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* | |
| 3 | * Header File for Altera SPI Driver. | |
| 4 | */ | |
| 5 | #ifndef __LINUX_SPI_ALTERA_H | |
| 6 | #define __LINUX_SPI_ALTERA_H | |
| 7 | ||
| b0c3d935 | 8 | #include <linux/interrupt.h> |
| 8e04187c XY |
9 | #include <linux/regmap.h> |
| 10 | #include <linux/spi/spi.h> | |
| 11 | #include <linux/types.h> | |
| 12 | ||
| b0c3d935 MG |
13 | #define ALTERA_SPI_MAX_CS 32 |
| 14 | ||
| 8e04187c XY |
15 | /** |
| 16 | * struct altera_spi_platform_data - Platform data of the Altera SPI driver | |
| 17 | * @mode_bits: Mode bits of SPI master. | |
| 18 | * @num_chipselect: Number of chipselects. | |
| 19 | * @bits_per_word_mask: bitmask of supported bits_per_word for transfers. | |
| 1fccd182 XY |
20 | * @num_devices: Number of devices that shall be added when the driver |
| 21 | * is probed. | |
| 22 | * @devices: The devices to add. | |
| 8e04187c XY |
23 | */ |
| 24 | struct altera_spi_platform_data { | |
| 25 | u16 mode_bits; | |
| 26 | u16 num_chipselect; | |
| 27 | u32 bits_per_word_mask; | |
| 1fccd182 XY |
28 | u16 num_devices; |
| 29 | struct spi_board_info *devices; | |
| 8e04187c XY |
30 | }; |
| 31 | ||
| b0c3d935 MG |
32 | struct altera_spi { |
| 33 | int irq; | |
| 34 | int len; | |
| 35 | int count; | |
| 36 | int bytes_per_word; | |
| 37 | u32 imr; | |
| 38 | ||
| 39 | /* data buffers */ | |
| 40 | const unsigned char *tx; | |
| 41 | unsigned char *rx; | |
| 42 | ||
| 43 | struct regmap *regmap; | |
| 44 | u32 regoff; | |
| 45 | struct device *dev; | |
| 46 | }; | |
| 47 | ||
| 48 | extern irqreturn_t altera_spi_irq(int irq, void *dev); | |
| 49 | extern void altera_spi_init_master(struct spi_master *master); | |
| 8e04187c | 50 | #endif /* __LINUX_SPI_ALTERA_H */ |