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)
  13 int rt5677_spi_read(u32 addr, void *rxbuf, size_t len);
  14 int rt5677_spi_write(u32 addr, const void *txbuf, size_t len);
  15 int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw);
  16 void rt5677_spi_hotword_detected(void);
  17 #else
  18 static inline int rt5677_spi_read(u32 addr, void *rxbuf, size_t len)
  19 {
  20         return -EINVAL;
  21 }
  22 static inline int rt5677_spi_write(u32 addr, const void *txbuf, size_t len)
  23 {
  24         return -EINVAL;
  25 }
  26 static inline int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw)
  27 {
  28         return -EINVAL;
  29 }
  30 static inline void rt5677_spi_hotword_detected(void){}
  31 #endif
  32
  33 #endif /* __RT5677_SPI_H__ */