mirror of
https://github.com/linux-thinkpad/tp_smapi.git
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48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/*
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* thinkpad_ec.h - interface to ThinkPad embedded controller LPC3 functions
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*
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* Copyright (C) 2005 Shem Multinymous <multinymous@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _THINKPAD_EC_H
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#define _THINKPAD_EC_H
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#ifdef __KERNEL__
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#define TP_CONTROLLER_ROW_LEN 16
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/* EC transactions input and output (possibly partial) vectors of 16 bytes. */
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struct thinkpad_ec_row {
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u16 mask; /* bitmap of which entries of val[] are meaningful */
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u8 val[TP_CONTROLLER_ROW_LEN];
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};
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extern int __must_check thinkpad_ec_lock(void);
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extern int __must_check thinkpad_ec_try_lock(void);
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extern void thinkpad_ec_unlock(void);
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extern int thinkpad_ec_read_row(const struct thinkpad_ec_row *args,
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struct thinkpad_ec_row *data);
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extern int thinkpad_ec_try_read_row(const struct thinkpad_ec_row *args,
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struct thinkpad_ec_row *mask);
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extern int thinkpad_ec_prefetch_row(const struct thinkpad_ec_row *args);
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extern void thinkpad_ec_invalidate(void);
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#endif /* __KERNEL */
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#endif /* _THINKPAD_EC_H */
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