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      1 /*      $NetBSD: lubbock_pcic.c,v 1.8 2023/12/20 13:55:18 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by IWAMOTO Toshihiro.
      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 <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: lubbock_pcic.c,v 1.8 2023/12/20 13:55:18 thorpej Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/types.h>
     38 #include <sys/conf.h>
     39 #include <sys/file.h>
     40 #include <sys/device.h>
     41 #include <sys/kernel.h>
     42 #include <sys/kthread.h>
     43 
     44 #include <sys/bus.h>
     45 
     46 #include <dev/pcmcia/pcmciachip.h>
     47 #include <dev/pcmcia/pcmciavar.h>
     48 #include <arm/sa11x0/sa11x0_reg.h>
     49 #include <arm/sa11x0/sa11x0_var.h>
     50 #include <arm/sa11x0/sa1111_reg.h>
     51 #include <arm/sa11x0/sa1111_var.h>
     52 #include <arm/sa11x0/sa11x1_pcicreg.h>
     53 #include <arm/sa11x0/sa11xx_pcicvar.h>
     54 #include <arm/sa11x0/sa11x1_pcicvar.h>
     55 
     56 #include <evbarm/lubbock/lubbock_reg.h>
     57 #include <evbarm/lubbock/lubbock_var.h>
     58 
     59 static	int	sacpcic_match(device_t, cfdata_t, void *);
     60 static	void	sacpcic_attach(device_t, device_t, void *);
     61 static	void	lubbock_set_power(struct sapcic_socket *so, int arg);
     62 static	void	lubbock_socket_setup(struct sapcic_socket *sp);
     63 
     64 static struct sapcic_tag lubbock_sacpcic_functions = {
     65 	sacpcic_read,
     66 	sacpcic_write,
     67 	lubbock_set_power,
     68 	sacpcic_clear_intr,
     69 	sacpcic_intr_establish,
     70 	sacpcic_intr_disestablish
     71 };
     72 
     73 CFATTACH_DECL_NEW(sacpcic, sizeof(struct sacpcic_softc),
     74     sacpcic_match, sacpcic_attach, NULL, NULL);
     75 
     76 static int
     77 sacpcic_match(device_t parent, cfdata_t cf, void *aux)
     78 {
     79 	return (1);
     80 }
     81 
     82 static void
     83 lubbock_socket_setup(struct sapcic_socket *sp)
     84 {
     85 	sp->power_capability = SAPCIC_POWER_5V | SAPCIC_POWER_3V;
     86 	sp->pcictag = &lubbock_sacpcic_functions;
     87 }
     88 
     89 static void
     90 sacpcic_attach(device_t parent, device_t self, void *aux)
     91 {
     92 	struct sacpcic_softc *sc = device_private(self);
     93 
     94 	sc->sc_pc.sc_dev = self;
     95 	sacpcic_attach_common(device_private(parent),
     96 	    sc, aux, lubbock_socket_setup);
     97 }
     98 
     99 
    100 static void
    101 lubbock_set_power(struct sapcic_socket *so, int arg)
    102 {
    103 	struct sacc_softc *sc = so->pcictag_cookie;
    104 	struct obio_softc *bsc = device_private(device_parent(sc->sc_dev));
    105 	int s;
    106 	uint16_t tmp;
    107 
    108 	static const uint8_t vval_socket0[] = {
    109 		/* for socket0 (pcmcia) */
    110 		0x00,		/* OFF */
    111 		0x08,		/* 3.3V */
    112 		0x05,		/* 5V */
    113 	};
    114 	static const uint16_t vval_socket1[] = {
    115 		/* for socket1 (CF) */
    116 		0x0000,		/* OFF */
    117 		0x8000,		/* 3.3V */
    118 		0x4000,		/* 5V */
    119 	};
    120 
    121 	if( arg < 0 || SAPCIC_POWER_5V < arg )
    122 		panic("sacpcic_set_power: bogus arg\n");
    123 
    124 	switch( so->socket ){
    125 	case 0:
    126 		bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR,
    127 				  vval_socket0[arg]);
    128 		break;
    129 	case 1:
    130 		s = splhigh();
    131 		tmp = bus_space_read_2(bsc->sc_iot, bsc->sc_obioreg_ioh,
    132 		    LUBBOCK_MISCWR);
    133 		bus_space_write_2(bsc->sc_iot, bsc->sc_obioreg_ioh,
    134 		    LUBBOCK_MISCWR, (tmp & 0x3fff) | vval_socket1[arg] );
    135 		splx(s);
    136 		break;
    137 	default:
    138 		aprint_normal("unknown socket number: %d\n", so->socket);
    139 	}
    140 }
    141