/* $NetBSD: g42xxeb_mci.c,v 1.3 2012/01/21 19:44:28 nonaka Exp $ */ /*- * Copyright (c) 2009 Genetec Corporation. All rights reserved. * Written by Hiroyuki Bessho for Genetec Corporation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* derived from zaurus/dev/zmci.c */ /*- * Copyright (C) 2006-2008 NONAKA Kimihiro * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: g42xxeb_mci.c,v 1.3 2012/01/21 19:44:28 nonaka Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct g42xxeb_mci_softc { struct pxamci_softc sc_mci; bus_space_tag_t sc_obio_iot; bus_space_handle_t sc_obio_ioh; void *sc_detect_ih; }; static int pxamci_match(device_t, cfdata_t, void *); static void pxamci_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(pxamci_obio, sizeof(struct g42xxeb_mci_softc), pxamci_match, pxamci_attach, NULL, NULL); static int g42xxeb_mci_intr(void *arg); static uint32_t g42xxeb_mci_get_ocr(void *); static int g42xxeb_mci_set_power(void *, uint32_t); static int g42xxeb_mci_card_detect(void *); static int g42xxeb_mci_write_protect(void *); static int pxamci_match(device_t parent, cfdata_t cf, void *aux) { if (strcmp(cf->cf_name, "pxamci") == 0) return 1; return 0; } struct pxa2x0_gpioconf g42xxeb_pxamci_gpioconf[] = { { 6, GPIO_CLR | GPIO_ALT_FN_1_OUT }, /* MMCCLK */ { 8, GPIO_CLR | GPIO_ALT_FN_1_OUT }, /* MMCCS0 */ { 9, GPIO_CLR | GPIO_ALT_FN_1_OUT }, /* MMCCS1 */ { -1 } }; static void pxamci_attach(device_t parent, device_t self, void *aux) { struct g42xxeb_mci_softc *sc = device_private(self); struct obio_attach_args *oba = aux; struct obio_softc *osc = device_private(parent); struct pxaip_attach_args pxa; struct pxa2x0_gpioconf *gpioconf[] = { g42xxeb_pxamci_gpioconf, NULL }; bus_space_tag_t iot = oba->oba_iot; sc->sc_mci.sc_dev = self; pxa2x0_gpio_config(gpioconf); /* Establish card detect interrupt */ sc->sc_detect_ih = obio_intr_establish(osc, G42XXEB_INT_MMCSD, IPL_BIO, IST_EDGE_BOTH, g42xxeb_mci_intr, sc); if (sc->sc_detect_ih == NULL) { aprint_error_dev(self, "unable to establish SD detect interrupt\n"); return; } sc->sc_mci.sc_tag.cookie = sc; sc->sc_mci.sc_tag.get_ocr = g42xxeb_mci_get_ocr; sc->sc_mci.sc_tag.set_power = g42xxeb_mci_set_power; sc->sc_mci.sc_tag.card_detect = g42xxeb_mci_card_detect; sc->sc_mci.sc_tag.write_protect = g42xxeb_mci_write_protect; sc->sc_mci.sc_caps = 0; pxa.pxa_iot = iot; /* actually, here we want I/O tag for pxaip, not for obio. */ #if 0 /* pxamci_attach_sub() ignores following values and uses * constants. */ pxa.pxa_addr = PXA2X0_MMC_BASE; pxa.pxa_size = PXA2X0_MMC_SIZE; pxa.pxa_intr = PXA2X0_INT_MMC; #endif /* disable DMA for sdmmc for now. */ SET(sc->sc_mci.sc_caps, PMC_CAPS_NO_DMA); if (pxamci_attach_sub(self, &pxa)) { aprint_error_dev(self, "unable to attach MMC controller\n"); goto free_intr; } if (!pmf_device_register(self, NULL, NULL)) { aprint_error_dev(self, "couldn't establish power handler\n"); } sc->sc_obio_iot = iot; sc->sc_obio_ioh = osc->sc_obioreg_ioh; return; free_intr: obio_intr_disestablish(osc, G42XXEB_INT_MMCSD, sc->sc_detect_ih); sc->sc_detect_ih = NULL; } static int g42xxeb_mci_intr(void *arg) { struct g42xxeb_mci_softc *sc = (struct g42xxeb_mci_softc *)arg; pxamci_card_detect_event(&sc->sc_mci); return 1; } static uint32_t g42xxeb_mci_get_ocr(void *arg) { return MMC_OCR_3_2V_3_3V; } static int g42xxeb_mci_set_power(void *arg, uint32_t ocr) { /* nothing to do */ return 0; } /* * Return non-zero if the card is currently inserted. */ static int g42xxeb_mci_card_detect(void *arg) { struct g42xxeb_mci_softc *sc = (struct g42xxeb_mci_softc *)arg; uint16_t reg; reg = bus_space_read_2(sc->sc_obio_iot, sc->sc_obio_ioh, G42XXEB_INTSTS2); return !(reg & (1<sc_obio_iot, sc->sc_obio_ioh, G42XXEB_WP); return reg & 1; }