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/*
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __WCD_SPI_H__
#define __WCD_SPI_H__
struct wcd_spi_msg {
/*
* Caller's buffer pointer that holds data to
* be transmitted in case of data_write and
* data to be copied to in case of data_read.
*/
void *data;
/* Length of data to write/read */
size_t len;
/*
* Address in remote memory to write to
* or read from.
*/
u32 remote_addr;
/* Bitmask of flags, currently unused */
u32 flags;
};
#ifdef CONFIG_SND_SOC_WCD_SPI
int wcd_spi_data_write(struct spi_device *spi, struct wcd_spi_msg *msg);
int wcd_spi_data_read(struct spi_device *spi, struct wcd_spi_msg *msg);
#else
int wcd_spi_data_write(struct spi_device *spi, struct wcd_spi_msg *msg)
{
return -ENODEV;
}
int wcd_spi_data_read(struct spi_device *spi, struct wcd_spi_msg *msg)
{
return -ENODEV;
}
#endif /* End of CONFIG_SND_SOC_WCD_SPI */
#endif /* End of __WCD_SPI_H__ */
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