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imxspivar.h revision 1.4 
      1 /*	$NetBSD: imxspivar.h,v 1.4 2025/09/10 02:42:28 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2014  Genetec Corporation.  All rights reserved.
      5  * Written by Hashimoto Kenichi for Genetec Corporation.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef	_ARM_IMX_IMXSPIVAR_H_
     30 #define	_ARM_IMX_IMXSPIVAR_H_
     31 
     32 #include <dev/spi/spivar.h>
     33 
     34 typedef struct spi_chipset_tag {
     35 	void *cookie;
     36 
     37 	int (*spi_cs_enable)(void *, int);
     38 	int (*spi_cs_disable)(void *, int);
     39 } *spi_chipset_tag_t;
     40 
     41 enum imxspi_type {
     42 	IMX31_CSPI,
     43 	IMX35_CSPI,
     44 	IMX51_ECSPI,
     45 };
     46 
     47 struct imxspi_softc {
     48 	device_t sc_dev;
     49 
     50 	bus_space_tag_t  sc_iot;
     51 	bus_space_handle_t sc_ioh;
     52 	spi_chipset_tag_t sc_tag;
     53 
     54 	struct spi_controller sc_spi;
     55 	unsigned long sc_freq;
     56 	struct spi_chunk *sc_wchunk;
     57 	struct spi_chunk *sc_rchunk;
     58 	void *sc_ih;
     59 	struct spi_transfer *sc_transfer;
     60 	bool  sc_running;
     61 	SIMPLEQ_HEAD(,spi_transfer) sc_q;
     62 
     63 	int sc_nslaves;
     64 	int sc_enhanced;
     65 	enum imxspi_type sc_type;
     66 };
     67 
     68 int imxspi_attach_common(device_t);
     69 int imxspi_intr(void *);
     70 
     71 /*
     72  * defined in machine dependent code
     73  */
     74 int imxspi_match(device_t, cfdata_t, void *);
     75 void imxspi_attach(device_t, device_t, void *);
     76 
     77 #endif	/* _ARM_IMX_IMXSPIVAR_H_ */
     78