1 /* $NetBSD: nbppcic.c,v 1.1 2011/08/06 03:53:40 kiyohara Exp $ */
2 /*
3 * Copyright (c) 2011 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/param.h>
29 #include <sys/bus.h>
30 #include <sys/device.h>
31 #include <sys/errno.h>
32
33 #include <machine/platid.h>
34 #include <machine/platid_mask.h>
35
36 #include <arm/xscale/pxa2x0var.h>
37 #include <arm/xscale/pxa2x0_gpio.h>
38 #include <arm/xscale/pxa2x0_pcic.h>
39
40 #include <dev/pcmcia/pcmciareg.h>
41 #include <dev/pcmcia/pcmciavar.h>
42 #include <dev/pcmcia/pcmciachip.h>
43
44
45 #define HAVE_CARD(r) (!((r) & GPIO_SET))
46
47
48 static int nbppcic_match(device_t, cfdata_t, void *);
49 static void nbppcic_attach(device_t, device_t, void *);
50
51 static u_int nbppcic_read(struct pxapcic_socket *, int);
52 static void nbppcic_write(struct pxapcic_socket *, int, u_int);
53 static void nbppcic_set_power(struct pxapcic_socket *, int);
54 static void nbppcic_clear_intr(struct pxapcic_socket *);
55 static void *nbppcic_intr_establish(struct pxapcic_socket *, int,
56 int (*)(void *), void *);
57 static void nbppcic_intr_disestablish(struct pxapcic_socket *, void *);
58
59 static void nbppcic_socket_setup(struct pxapcic_socket *);
60
61 CFATTACH_DECL_NEW(nbppcic, sizeof(struct pxapcic_softc),
62 nbppcic_match, nbppcic_attach, NULL, NULL);
63
64 static struct pxapcic_tag nbppcic_functions = {
65 nbppcic_read,
66 nbppcic_write,
67 nbppcic_set_power,
68 nbppcic_clear_intr,
69 nbppcic_intr_establish,
70 nbppcic_intr_disestablish,
71 };
72
73
74 static int
nbppcic_match(device_t parent,cfdata_t match,void * aux)75 nbppcic_match(device_t parent, cfdata_t match, void *aux)
76 {
77 struct pxaip_attach_args *pxa = aux;
78
79 if (strcmp(pxa->pxa_name, match->cf_name) != 0 ||
80 !platid_match(&platid, &platid_mask_MACH_PSIONTEKLOGIX_NETBOOK_PRO))
81 return 0;
82
83 return 1;
84 }
85
86 static void
nbppcic_attach(device_t parent,device_t self,void * aux)87 nbppcic_attach(device_t parent, device_t self, void *aux)
88 {
89 struct pxapcic_softc *sc = device_private(self);
90 struct pxaip_attach_args *pxa = aux;
91
92 sc->sc_dev = self;
93 sc->sc_iot = pxa->pxa_iot;
94
95 sc->sc_nslots = 2;
96 sc->sc_irqpin[0] = 71; /* GPIO 71: PRDY1/~IRQ1 */
97 sc->sc_irqcfpin[0] = 73; /* GPIO 73: PCD1 */
98 sc->sc_irqpin[1] = 77; /* GPIO 77: PRDY2/~IRQ2 */
99 sc->sc_irqcfpin[1] = 75; /* GPIO 75: PCD2 */
100
101 pxapcic_attach_common(sc, &nbppcic_socket_setup);
102 }
103
104 static u_int
nbppcic_read(struct pxapcic_socket * so,int which)105 nbppcic_read(struct pxapcic_socket *so, int which)
106 {
107 struct pxapcic_softc *sc = so->sc;
108 int reg;
109
110 switch (which) {
111 case PXAPCIC_CARD_STATUS:
112 reg = pxa2x0_gpio_get_function(sc->sc_irqcfpin[so->socket]);
113 return (HAVE_CARD(reg) ?
114 PXAPCIC_CARD_VALID : PXAPCIC_CARD_INVALID);
115
116 case PXAPCIC_CARD_READY:
117 reg = pxa2x0_gpio_get_function(sc->sc_irqpin[so->socket]);
118 return (reg & GPIO_SET) ? 1 : 0;
119
120 default:
121 panic("%s: bogus register", __func__);
122 }
123 /* NOTREACHED */
124 }
125
126 static void
nbppcic_write(struct pxapcic_socket * so,int which,u_int arg)127 nbppcic_write(struct pxapcic_socket *so, int which, u_int arg)
128 {
129
130 switch (which) {
131 case PXAPCIC_CARD_POWER:
132 /* To Be Done: ;-) */
133 break;
134
135 case PXAPCIC_CARD_RESET:
136 {
137 int reset_pin[2] = { 70, 74 }; /* GPIO 70, GPIO 74 */
138
139 pxa2x0_gpio_set_function(reset_pin[so->socket],
140 GPIO_OUT | (arg ? GPIO_CLR : GPIO_SET));
141 break;
142 }
143
144 default:
145 panic("%s: bogus register", __func__);
146 }
147 /* NOTREACHED */
148 }
149
150 /* ARGSUSED */
151 static void
nbppcic_set_power(struct pxapcic_socket * so,int arg)152 nbppcic_set_power(struct pxapcic_socket *so, int arg)
153 {
154
155 if(arg != PXAPCIC_POWER_OFF && arg != PXAPCIC_POWER_3V)
156 panic("%s: bogus arg\n", __func__);
157 }
158
159 /* ARGSUSED */
160 static void
nbppcic_clear_intr(struct pxapcic_socket * so)161 nbppcic_clear_intr(struct pxapcic_socket *so)
162 {
163
164 /* nothing to do */
165 }
166
167 static void *
nbppcic_intr_establish(struct pxapcic_socket * so,int level,int (* ih_fun)(void *),void * ih_arg)168 nbppcic_intr_establish(struct pxapcic_socket *so, int level,
169 int (* ih_fun)(void *), void *ih_arg)
170 {
171
172 return pxa2x0_gpio_intr_establish(so->irqpin, IST_EDGE_FALLING,
173 level, ih_fun, ih_arg);
174 }
175
176 /* ARGSUSED */
177 static void
nbppcic_intr_disestablish(struct pxapcic_socket * so,void * ih)178 nbppcic_intr_disestablish(struct pxapcic_socket *so, void *ih)
179 {
180
181 pxa2x0_gpio_intr_disestablish(ih);
182 }
183
184
185 static void
nbppcic_socket_setup(struct pxapcic_socket * so)186 nbppcic_socket_setup(struct pxapcic_socket *so)
187 {
188
189 so->power_capability = PXAPCIC_POWER_3V;
190 so->pcictag_cookie = NULL;
191 so->pcictag = &nbppcic_functions;
192 }
193