LXR linux/include/linux/spi/spi

   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 */
  21struct spi_gpio_platform_data {
  22        u16             num_chipselect;
  23};
  24
  25#endif /* __LINUX_SPI_GPIO_H */
  26