155 lines
4.1 KiB
C
155 lines
4.1 KiB
C
/* $NetBSD: gxmci.c,v 1.4 2012/01/21 19:44:28 nonaka Exp $ */
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/*-
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* Copyright (C) 2007 NONAKA Kimihiro <nonaka@netbsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: gxmci.c,v 1.4 2012/01/21 19:44:28 nonaka Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <machine/intr.h>
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#include <arm/xscale/pxa2x0cpu.h>
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#include <arm/xscale/pxa2x0reg.h>
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#include <arm/xscale/pxa2x0var.h>
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#include <arm/xscale/pxa2x0_gpio.h>
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#include <arm/xscale/pxa2x0_mci.h>
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#include <dev/sdmmc/sdmmcreg.h>
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#if defined(PXAMCI_DEBUG)
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#define DPRINTF(s) printf s
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#else
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#define DPRINTF(s)
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#endif
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struct gxmci_softc {
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struct pxamci_softc sc;
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};
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static int pxamci_match(device_t, cfdata_t, void *);
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static void pxamci_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(gxmci, sizeof(struct gxmci_softc),
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pxamci_match, pxamci_attach, NULL, NULL);
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static uint32_t gxmci_get_ocr(void *);
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static int gxmci_set_power(void *, uint32_t);
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static int gxmci_card_detect(void *);
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static int gxmci_write_protect(void *);
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static int
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pxamci_match(device_t parent, cfdata_t match, void *aux)
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{
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struct pxaip_attach_args *pxa = aux;
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static struct pxa2x0_gpioconf pxa25x_gxmci_gpioconf[] = {
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{ 8, GPIO_ALT_FN_1_OUT }, /* MMCCS0 */
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{ 53, GPIO_ALT_FN_1_OUT }, /* MMCLK */
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{ -1 }
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};
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struct pxa2x0_gpioconf *gpioconf;
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u_int reg;
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int i;
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if (strcmp(pxa->pxa_name, match->cf_name) != 0)
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return 0;
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/*
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* Check GPIO configuration. If you use these, it is sure already
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* to have been set by gxio.
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*/
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gpioconf =
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CPU_IS_PXA250 ? pxa25x_gxmci_gpioconf : pxa27x_pxamci_gpioconf;
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for (i = 0; gpioconf[i].pin != -1; i++) {
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reg = pxa2x0_gpio_get_function(gpioconf[i].pin);
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if (GPIO_FN(reg) != GPIO_FN(gpioconf[i].value) ||
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GPIO_FN_IS_OUT(reg) != GPIO_FN_IS_OUT(gpioconf[i].value))
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return 0;
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}
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pxa->pxa_size = PXA2X0_MMC_SIZE;
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return 1;
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}
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static void
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pxamci_attach(device_t parent, device_t self, void *aux)
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{
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struct gxmci_softc *sc = device_private(self);
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struct pxaip_attach_args *pxa = aux;
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sc->sc.sc_tag.cookie = sc;
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sc->sc.sc_tag.get_ocr = gxmci_get_ocr;
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sc->sc.sc_tag.set_power = gxmci_set_power;
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sc->sc.sc_tag.card_detect = gxmci_card_detect;
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sc->sc.sc_tag.write_protect = gxmci_write_protect;
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sc->sc.sc_caps = 0;
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if (pxamci_attach_sub(self, pxa)) {
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aprint_error_dev(self, "unable to attach MMC controller\n");
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}
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if (!pmf_device_register(self, NULL, NULL)) {
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aprint_error_dev(self, "couldn't establish power handler\n");
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}
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}
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static uint32_t
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gxmci_get_ocr(void *arg)
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{
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return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V;
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}
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static int
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gxmci_set_power(void *arg, uint32_t ocr)
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{
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return 0;
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}
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/*
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* Return non-zero if the card is currently inserted.
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*/
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static int
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gxmci_card_detect(void *arg)
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{
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return 1;
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}
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/*
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* Return non-zero if the card is currently write-protected.
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*/
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static int
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gxmci_write_protect(void *arg)
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{
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return 0;
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}
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