1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_SPI_GPIO_H
3 #define __LINUX_SPI_GPIO_H
4 
5 /*
6  * For each bitbanged SPI bus, set up a platform_device node with:
7  *   - name "spi_gpio"
8  *   - id the same as the SPI bus number it implements
9  *   - dev.platform data pointing to a struct spi_gpio_platform_data
10  *
11  * Use spi_board_info with these busses in the usual way.
12  *
13  * If the bitbanged bus is later switched to a "native" controller,
14  * that platform_device and controller_data should be removed.
15  */
16 
17 /**
18  * struct spi_gpio_platform_data - parameter for bitbanged SPI master
19  * @num_chipselect: how many slaves to allow
20  */
21 struct spi_gpio_platform_data {
22 	u16		num_chipselect;
23 };
24 
25 #endif /* __LINUX_SPI_GPIO_H */
26