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 */