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__ */ 34