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dwiic_var.h revision 1.2 
      1 /* $NetBSD: dwiic_var.h,v 1.2 2018/09/26 18:32:51 jakllsch Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2017 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Manuel Bouyer.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <dev/i2c/i2cvar.h>
     33 
     34 enum dwiic_type {
     35 	dwiic_type_generic,
     36 	dwiic_type_sunrisepoint
     37 };
     38 
     39 struct dwiic_softc {
     40 	device_t		sc_dev;
     41 
     42 	bus_space_tag_t		sc_iot;
     43 	bus_space_handle_t	sc_ioh;
     44 	void			*sc_ih;
     45 
     46 	enum dwiic_type		sc_type;
     47 
     48 	bool			(*sc_power)(struct dwiic_softc *, bool);
     49 
     50 	struct i2cbus_attach_args sc_iba;
     51 	device_t		sc_iic;
     52 
     53 	int			sc_poll;
     54 	kmutex_t		sc_int_lock;
     55 	kcondvar_t		sc_int_readwait;
     56 	kcondvar_t		sc_int_writewait;
     57 	kcondvar_t		sc_int_stopwait;
     58 
     59 	uint32_t		master_cfg;
     60 	uint16_t		ss_hcnt, ss_lcnt, fs_hcnt, fs_lcnt;
     61 	uint32_t		sda_hold_time;
     62 	int			tx_fifo_depth;
     63 	int			rx_fifo_depth;
     64 
     65 	struct i2c_controller	sc_i2c_tag;
     66 	kmutex_t		sc_i2c_lock;
     67 	struct {
     68 		i2c_op_t	op;
     69 		void		*buf;
     70 		size_t		len;
     71 		int		flags;
     72 		volatile int	error;
     73 	} sc_i2c_xfer;
     74 };
     75 
     76 bool		dwiic_attach(struct dwiic_softc *);
     77 int		dwiic_detach(device_t, int);
     78 bool		dwiic_suspend(device_t, const pmf_qual_t *);
     79 bool		dwiic_resume(device_t, const pmf_qual_t *);
     80 
     81 int		dwiic_intr(void *);
     82