linux-imx

// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)

// Copyright(c) 2015-17 Intel Corporation.

​

#ifndef __SDW_BUS_H

#define __SDW_BUS_H

​

#define DEFAULT_BANK_SWITCH_TIMEOUT 3000

​

#if IS_ENABLED(CONFIG_ACPI)

int sdw_acpi_find_slaves(struct sdw_bus *bus);

#else

static inline int sdw_acpi_find_slaves(struct sdw_bus *bus)

{

    return -ENOTSUPP;

}

#endif

​

void sdw_extract_slave_id(struct sdw_bus *bus,

            u64 addr, struct sdw_slave_id *id);

​

enum {

    SDW_MSG_FLAG_READ = 0,

    SDW_MSG_FLAG_WRITE,

};

​

/**

 * struct sdw_msg - Message structure

 * @addr: Register address accessed in the Slave

 * @len: number of messages

 * @dev_num: Slave device number

 * @addr_page1: SCP address page 1 Slave register

 * @addr_page2: SCP address page 2 Slave register

 * @flags: transfer flags, indicate if xfer is read or write

 * @buf: message data buffer

 * @ssp_sync: Send message at SSP (Stream Synchronization Point)

 * @page: address requires paging

 */

struct sdw_msg {

    u16 addr;

    u16 len;

    u8 dev_num;

    u8 addr_page1;

    u8 addr_page2;

    u8 flags;

    u8 *buf;

    bool ssp_sync;

    bool page;

};

​

#define SDW_DOUBLE_RATE_FACTOR      2

​

extern int rows[SDW_FRAME_ROWS];

extern int cols[SDW_FRAME_COLS];

​

/**

 * sdw_port_runtime: Runtime port parameters for Master or Slave

 *

 * @num: Port number. For audio streams, valid port number ranges from

 * [1,14]

 * @ch_mask: Channel mask

 * @transport_params: Transport parameters

 * @port_params: Port parameters

 * @port_node: List node for Master or Slave port_list