wzero3_mci.c revision 1.4 1 1.4 nonaka /* $NetBSD: wzero3_mci.c,v 1.4 2012/01/21 19:44:29 nonaka Exp $ */
2 1.1 nonaka
3 1.1 nonaka /*-
4 1.4 nonaka * Copyright (C) 2009 NONAKA Kimihiro <nonaka (at) netbsd.org>
5 1.1 nonaka * All rights reserved.
6 1.1 nonaka *
7 1.1 nonaka * Redistribution and use in source and binary forms, with or without
8 1.1 nonaka * modification, are permitted provided that the following conditions
9 1.1 nonaka * are met:
10 1.1 nonaka * 1. Redistributions of source code must retain the above copyright
11 1.1 nonaka * notice, this list of conditions and the following disclaimer.
12 1.1 nonaka * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 nonaka * notice, this list of conditions and the following disclaimer in the
14 1.1 nonaka * documentation and/or other materials provided with the distribution.
15 1.1 nonaka *
16 1.4 nonaka * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 1.4 nonaka * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 1.4 nonaka * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 1.4 nonaka * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 1.4 nonaka * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 1.4 nonaka * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 1.4 nonaka * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 1.4 nonaka * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 1.4 nonaka * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 1.4 nonaka * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 1.1 nonaka */
27 1.1 nonaka
28 1.1 nonaka #include <sys/cdefs.h>
29 1.4 nonaka __KERNEL_RCSID(0, "$NetBSD: wzero3_mci.c,v 1.4 2012/01/21 19:44:29 nonaka Exp $");
30 1.1 nonaka
31 1.1 nonaka #include <sys/param.h>
32 1.1 nonaka #include <sys/device.h>
33 1.1 nonaka #include <sys/systm.h>
34 1.1 nonaka #include <sys/pmf.h>
35 1.3 dyoung #include <sys/bus.h>
36 1.1 nonaka
37 1.1 nonaka #include <machine/bootinfo.h>
38 1.1 nonaka #include <machine/platid.h>
39 1.1 nonaka #include <machine/platid_mask.h>
40 1.1 nonaka
41 1.1 nonaka #include <arm/xscale/pxa2x0cpu.h>
42 1.1 nonaka #include <arm/xscale/pxa2x0reg.h>
43 1.1 nonaka #include <arm/xscale/pxa2x0var.h>
44 1.1 nonaka #include <arm/xscale/pxa2x0_gpio.h>
45 1.1 nonaka #include <arm/xscale/pxa2x0_mci.h>
46 1.1 nonaka
47 1.1 nonaka #include <dev/sdmmc/sdmmcreg.h>
48 1.1 nonaka
49 1.1 nonaka #include <hpcarm/dev/wzero3_reg.h>
50 1.1 nonaka
51 1.1 nonaka #if defined(PXAMCI_DEBUG)
52 1.1 nonaka #define DPRINTF(s) do { printf s; } while (0)
53 1.1 nonaka #else
54 1.1 nonaka #define DPRINTF(s) do {} while (0)
55 1.1 nonaka #endif
56 1.1 nonaka
57 1.1 nonaka struct wzero3mci_softc {
58 1.1 nonaka struct pxamci_softc sc;
59 1.1 nonaka
60 1.1 nonaka void *sc_detect_ih;
61 1.1 nonaka int sc_detect_pin;
62 1.1 nonaka int sc_power_pin;
63 1.1 nonaka };
64 1.1 nonaka
65 1.1 nonaka static int pxamci_match(device_t, cfdata_t, void *);
66 1.1 nonaka static void pxamci_attach(device_t, device_t, void *);
67 1.1 nonaka
68 1.1 nonaka CFATTACH_DECL_NEW(wzero3mci, sizeof(struct wzero3mci_softc),
69 1.1 nonaka pxamci_match, pxamci_attach, NULL, NULL);
70 1.1 nonaka
71 1.1 nonaka static int wzero3mci_intr(void *arg);
72 1.1 nonaka
73 1.1 nonaka static uint32_t wzero3mci_get_ocr(void *);
74 1.1 nonaka static int wzero3mci_set_power(void *, uint32_t);
75 1.1 nonaka static int wzero3mci_card_detect(void *);
76 1.1 nonaka static int wzero3mci_write_protect(void *);
77 1.1 nonaka
78 1.1 nonaka struct wzero3mci_model {
79 1.1 nonaka platid_mask_t *platid;
80 1.1 nonaka int detect_pin; /* card detect pin# */
81 1.1 nonaka int power_pin; /* card power pin # */
82 1.1 nonaka } wzero3mci_table[] = {
83 1.1 nonaka /* WS003SH */
84 1.1 nonaka {
85 1.1 nonaka &platid_mask_MACH_SHARP_WZERO3_WS003SH,
86 1.1 nonaka GPIO_WS003SH_SD_DETECT,
87 1.1 nonaka GPIO_WS003SH_SD_POWER,
88 1.1 nonaka },
89 1.1 nonaka /* WS004SH */
90 1.1 nonaka {
91 1.1 nonaka &platid_mask_MACH_SHARP_WZERO3_WS004SH,
92 1.1 nonaka GPIO_WS003SH_SD_DETECT,
93 1.1 nonaka GPIO_WS003SH_SD_POWER,
94 1.1 nonaka },
95 1.1 nonaka /* WS007SH */
96 1.1 nonaka {
97 1.1 nonaka &platid_mask_MACH_SHARP_WZERO3_WS007SH,
98 1.1 nonaka GPIO_WS007SH_SD_DETECT,
99 1.1 nonaka GPIO_WS007SH_SD_POWER,
100 1.1 nonaka },
101 1.1 nonaka /* WS011SH */
102 1.1 nonaka {
103 1.1 nonaka &platid_mask_MACH_SHARP_WZERO3_WS011SH,
104 1.1 nonaka GPIO_WS011SH_SD_DETECT,
105 1.1 nonaka GPIO_WS011SH_SD_POWER,
106 1.1 nonaka },
107 1.1 nonaka /* WS0020H */
108 1.1 nonaka {
109 1.1 nonaka &platid_mask_MACH_SHARP_WZERO3_WS020SH,
110 1.2 nonaka GPIO_WS020SH_SD_DETECT,
111 1.2 nonaka GPIO_WS020SH_SD_POWER,
112 1.1 nonaka },
113 1.1 nonaka
114 1.1 nonaka {
115 1.1 nonaka NULL, -1, -1
116 1.1 nonaka },
117 1.1 nonaka };
118 1.1 nonaka
119 1.1 nonaka
120 1.1 nonaka static const struct wzero3mci_model *
121 1.1 nonaka wzero3mci_lookup(void)
122 1.1 nonaka {
123 1.1 nonaka const struct wzero3mci_model *model;
124 1.1 nonaka
125 1.1 nonaka for (model = wzero3mci_table; model->platid != NULL; model++) {
126 1.1 nonaka if (platid_match(&platid, model->platid)) {
127 1.1 nonaka return model;
128 1.1 nonaka }
129 1.1 nonaka }
130 1.1 nonaka return NULL;
131 1.1 nonaka }
132 1.1 nonaka
133 1.1 nonaka static int
134 1.1 nonaka pxamci_match(device_t parent, cfdata_t cf, void *aux)
135 1.1 nonaka {
136 1.1 nonaka
137 1.1 nonaka if (strcmp(cf->cf_name, "pxamci") != 0)
138 1.1 nonaka return 0;
139 1.1 nonaka if (wzero3mci_lookup() == NULL)
140 1.1 nonaka return 0;
141 1.1 nonaka return 1;
142 1.1 nonaka }
143 1.1 nonaka
144 1.1 nonaka static void
145 1.1 nonaka pxamci_attach(device_t parent, device_t self, void *aux)
146 1.1 nonaka {
147 1.1 nonaka struct wzero3mci_softc *sc = device_private(self);
148 1.1 nonaka struct pxaip_attach_args *pxa = aux;
149 1.1 nonaka const struct wzero3mci_model *model;
150 1.1 nonaka
151 1.1 nonaka sc->sc.sc_dev = self;
152 1.1 nonaka
153 1.1 nonaka model = wzero3mci_lookup();
154 1.1 nonaka if (model == NULL) {
155 1.1 nonaka aprint_error(": Unknown model.");
156 1.1 nonaka return;
157 1.1 nonaka }
158 1.1 nonaka
159 1.1 nonaka sc->sc_detect_pin = model->detect_pin;
160 1.1 nonaka sc->sc_power_pin = model->power_pin;
161 1.1 nonaka
162 1.1 nonaka /* Establish SD detect interrupt */
163 1.1 nonaka if (sc->sc_detect_pin >= 0) {
164 1.1 nonaka pxa2x0_gpio_set_function(sc->sc_detect_pin, GPIO_IN);
165 1.1 nonaka sc->sc_detect_ih = pxa2x0_gpio_intr_establish(sc->sc_detect_pin,
166 1.1 nonaka IST_EDGE_BOTH, IPL_BIO, wzero3mci_intr, sc);
167 1.1 nonaka if (sc->sc_detect_ih == NULL) {
168 1.1 nonaka aprint_error_dev(self,
169 1.1 nonaka "unable to establish card detect interrupt\n");
170 1.1 nonaka return;
171 1.1 nonaka }
172 1.1 nonaka }
173 1.1 nonaka
174 1.1 nonaka sc->sc.sc_tag.cookie = sc;
175 1.1 nonaka sc->sc.sc_tag.get_ocr = wzero3mci_get_ocr;
176 1.1 nonaka sc->sc.sc_tag.set_power = wzero3mci_set_power;
177 1.1 nonaka sc->sc.sc_tag.card_detect = wzero3mci_card_detect;
178 1.1 nonaka sc->sc.sc_tag.write_protect = wzero3mci_write_protect;
179 1.1 nonaka sc->sc.sc_caps = PMC_CAPS_4BIT;
180 1.1 nonaka
181 1.1 nonaka if (pxamci_attach_sub(self, pxa)) {
182 1.1 nonaka aprint_error_dev(self, "unable to attach MMC controller\n");
183 1.1 nonaka goto free_intr;
184 1.1 nonaka }
185 1.1 nonaka
186 1.1 nonaka if (!pmf_device_register(self, NULL, NULL)) {
187 1.1 nonaka aprint_error_dev(self, "couldn't establish power handler\n");
188 1.1 nonaka }
189 1.1 nonaka
190 1.1 nonaka return;
191 1.1 nonaka
192 1.1 nonaka free_intr:
193 1.1 nonaka pxa2x0_gpio_intr_disestablish(sc->sc_detect_ih);
194 1.1 nonaka sc->sc_detect_ih = NULL;
195 1.1 nonaka }
196 1.1 nonaka
197 1.1 nonaka static int
198 1.1 nonaka wzero3mci_intr(void *arg)
199 1.1 nonaka {
200 1.1 nonaka struct wzero3mci_softc *sc = (struct wzero3mci_softc *)arg;
201 1.1 nonaka
202 1.1 nonaka pxa2x0_gpio_clear_intr(sc->sc_detect_pin);
203 1.1 nonaka
204 1.1 nonaka pxamci_card_detect_event(&sc->sc);
205 1.1 nonaka
206 1.1 nonaka return 1;
207 1.1 nonaka }
208 1.1 nonaka
209 1.1 nonaka /*ARGSUSED*/
210 1.1 nonaka static uint32_t
211 1.1 nonaka wzero3mci_get_ocr(void *arg)
212 1.1 nonaka {
213 1.1 nonaka
214 1.1 nonaka return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V;
215 1.1 nonaka }
216 1.1 nonaka
217 1.1 nonaka static int
218 1.1 nonaka wzero3mci_set_power(void *arg, uint32_t ocr)
219 1.1 nonaka {
220 1.1 nonaka struct wzero3mci_softc *sc = (struct wzero3mci_softc *)arg;
221 1.1 nonaka int error = 0;
222 1.1 nonaka
223 1.1 nonaka if (sc->sc_power_pin >= 0) {
224 1.1 nonaka if (ISSET(ocr, MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V)) {
225 1.1 nonaka /* power on */
226 1.1 nonaka pxa2x0_gpio_set_bit(sc->sc_power_pin);
227 1.1 nonaka } else if (ocr == 0) {
228 1.1 nonaka /* power off */
229 1.1 nonaka pxa2x0_gpio_clear_bit(sc->sc_power_pin);
230 1.1 nonaka } else {
231 1.1 nonaka aprint_error_dev(sc->sc.sc_dev,
232 1.1 nonaka "unsupported OCR (%#x)\n", ocr);
233 1.1 nonaka error = EINVAL;
234 1.1 nonaka }
235 1.1 nonaka }
236 1.1 nonaka return error;
237 1.1 nonaka }
238 1.1 nonaka
239 1.1 nonaka /*
240 1.1 nonaka * Return non-zero if the card is currently inserted.
241 1.1 nonaka */
242 1.1 nonaka static int
243 1.1 nonaka wzero3mci_card_detect(void *arg)
244 1.1 nonaka {
245 1.1 nonaka struct wzero3mci_softc *sc = (struct wzero3mci_softc *)arg;
246 1.1 nonaka
247 1.1 nonaka if (sc->sc_detect_pin >= 0) {
248 1.1 nonaka if (pxa2x0_gpio_get_bit(sc->sc_detect_pin))
249 1.1 nonaka return 0;
250 1.1 nonaka }
251 1.1 nonaka return 1;
252 1.1 nonaka }
253 1.1 nonaka
254 1.1 nonaka /*
255 1.1 nonaka * Return non-zero if the card is currently write-protected.
256 1.1 nonaka */
257 1.1 nonaka /*ARGSUSED*/
258 1.1 nonaka static int
259 1.1 nonaka wzero3mci_write_protect(void *arg)
260 1.1 nonaka {
261 1.1 nonaka
262 1.1 nonaka return 0;
263 1.1 nonaka }
264