[linux-block.git] / include / linux / spi / spi_gpio.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_SPI_GPIO_H
#define __LINUX_SPI_GPIO_H

/*
 * For each bitbanged SPI bus, set up a platform_device node with:
 *   - name "spi_gpio"
 *   - id the same as the SPI bus number it implements
 *   - dev.platform data pointing to a struct spi_gpio_platform_data
 *
 * Use spi_board_info with these busses in the usual way.
 *
 * If the bitbanged bus is later switched to a "native" controller,
 * that platform_device and controller_data should be removed.
 */

/**
 * struct spi_gpio_platform_data - parameter for bitbanged SPI master
 * @num_chipselect: how many slaves to allow
 */
struct spi_gpio_platform_data {
	u16		num_chipselect;
};

#endif /* __LINUX_SPI_GPIO_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
d29389de DB	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	*
9b00bc7b	11	* Use spi_board_info with these busses in the usual way.
3c8e1a84	12	*
d29389de DB	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
d29389de	19	* @num_chipselect: how many slaves to allow
d29389de DB	20	*/
d29389de DB	21	struct spi_gpio_platform_data {
d29389de DB	22	u16 num_chipselect;
	23	};
	24
	25	#endif /* __LINUX_SPI_GPIO_H */