/* $NetBSD: exi.h,v 1.2 2024/02/10 11:00:15 jmcneill Exp $ */

/*-
* Copyright (c) 2024 Jared McNeill <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef _WII_DEV_EXI_H_
#define _WII_DEV_EXI_H_

typedef enum {
       EXI_FREQ_1MHZ = 0,
       EXI_FREQ_2MHZ = 1,
       EXI_FREQ_4MHZ = 2,
       EXI_FREQ_8MHZ = 3,
       EXI_FREQ_16MHZ = 4,
       EXI_FREQ_32MHZ = 5,
} exi_freq_t;

struct exi_attach_args {
       uint32_t        eaa_id;
       uint8_t         eaa_chan;
       uint8_t         eaa_device;
};

void exi_select(uint8_t, uint8_t, exi_freq_t);
void exi_unselect(uint8_t);
void exi_send_imm(uint8_t, uint8_t, const void *, size_t);
void exi_recv_imm(uint8_t, uint8_t, void *, size_t);
void exi_recv_dma(uint8_t, uint8_t, void *, size_t);

#endif /* _WII_DEV_EXI_H_ */