linux-imx

// SPDX-License-Identifier: GPL-2.0-only

/*

 * fireworks_command.c - a part of driver for Fireworks based devices

 *

 * Copyright (c) 2013-2014 Takashi Sakamoto

 */

​

#include "./fireworks.h"

​

/*

 * This driver uses transaction version 1 or later to use extended hardware

 * information. Then too old devices are not available.

 *

 * Each commands are not required to have continuous sequence numbers. This

 * number is just used to match command and response.

 *

 * This module support a part of commands. Please see FFADO if you want to see

 * whole commands. But there are some commands which FFADO don't implement.

 *

 * Fireworks also supports AV/C general commands and AV/C Stream Format

 * Information commands. But this module don't use them.

 */

​

#define KERNEL_SEQNUM_MIN   (SND_EFW_TRANSACTION_USER_SEQNUM_MAX + 2)

#define KERNEL_SEQNUM_MAX   ((u32)~0)

​

/* for clock source and sampling rate */

struct efc_clock {

    u32 source;

    u32 sampling_rate;

    u32 index;

};

​

/* command categories */

enum efc_category {

    EFC_CAT_HWINFO      = 0,

    EFC_CAT_TRANSPORT   = 2,

    EFC_CAT_HWCTL       = 3,

};

​

/* hardware info category commands */

enum efc_cmd_hwinfo {

    EFC_CMD_HWINFO_GET_CAPS     = 0,

    EFC_CMD_HWINFO_GET_POLLED   = 1,

    EFC_CMD_HWINFO_SET_RESP_ADDR    = 2

};

​

enum efc_cmd_transport {

    EFC_CMD_TRANSPORT_SET_TX_MODE   = 0

};

​

/* hardware control category commands */

enum efc_cmd_hwctl {

    EFC_CMD_HWCTL_SET_CLOCK     = 0,

    EFC_CMD_HWCTL_GET_CLOCK     = 1,

    EFC_CMD_HWCTL_IDENTIFY      = 5

};

​

/* return values in response */

enum efr_status {

    EFR_STATUS_OK           = 0,

    EFR_STATUS_BAD          = 1,

    EFR_STATUS_BAD_COMMAND      = 2,