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/* $OpenBSD: iosfvar.h,v 1.2 2024/05/11 14:49:56 jsg Exp $ */
/*
* Copyright (c) 2023 David Gwynne <dlg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _DEV_IC_IOSFVAR_H_
#define _DEV_IC_IOSFVAR_H_
/*
* iosf provider api
*/
struct iosf_mbi {
struct device *mbi_dev;
int mbi_prio;
int mbi_semaddr;
uint32_t (*mbi_mdr_rd)(struct iosf_mbi *sc, uint32_t, uint32_t);
void (*mbi_mdr_wr)(struct iosf_mbi *sc, uint32_t, uint32_t,
uint32_t);
};
void iosf_mbi_attach(struct iosf_mbi *);
/*
* iosf consumer apis
*/
int iosf_mbi_available(void);
/* for i2c */
int iosf_i2c_acquire(int);
void iosf_i2c_release(int);
/* for drm to coordinate with the rest of the kernel */
void iosf_mbi_punit_acquire(void);
void iosf_mbi_punit_release(void);
void iosf_mbi_assert_punit_acquired(void);
#ifdef nyetyet
int iosf_mbi_read(uint8_t, uint8_t, uint32_t, uint32_t *);
int iosf_mbi_write(uint8_t, uint8_t, uint32_t, uint32_t);
int iosf_mbi_modify(uint8_t, uint8_t, uint32_t, uint32_t, uint32_t);
#endif
#endif /* _DEV_IC_IOSFVAR_H_ */
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