LXR linux/sound/soc/codecs/rt5677-spi.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * rt5677-spi.h  --  RT5677 ALSA SoC audio codec driver
   4 *
   5 * Copyright 2013 Realtek Semiconductor Corp.
   6 * Author: Oder Chiou <oder_chiou@realtek.com>
   7 */
   8
   9#ifndef __RT5677_SPI_H__
  10#define __RT5677_SPI_H__
  11
  12#if IS_ENABLED(CONFIG_SND_SOC_RT5677_SPI)
  13int rt5677_spi_read(u32 addr, void *rxbuf, size_t len);
  14int rt5677_spi_write(u32 addr, const void *txbuf, size_t len);
  15int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw);
  16void rt5677_spi_hotword_detected(void);
  17#else
  18static inline int rt5677_spi_read(u32 addr, void *rxbuf, size_t len)
  19{
  20        return -EINVAL;
  21}
  22static inline int rt5677_spi_write(u32 addr, const void *txbuf, size_t len)
  23{
  24        return -EINVAL;
  25}
  26static inline int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw)
  27{
  28        return -EINVAL;
  29}
  30static inline void rt5677_spi_hotword_detected(void){}
  31#endif
  32
  33#endif /* __RT5677_SPI_H__ */
  34