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      1 /*	$NetBSD: nbpmci.c,v 1.2 2012/01/21 19:44:29 nonaka Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 2007 NONAKA Kimihiro <nonaka (at) netbsd.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: nbpmci.c,v 1.2 2012/01/21 19:44:29 nonaka Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/device.h>
     33 
     34 #include <machine/platid.h>
     35 #include <machine/platid_mask.h>
     36 
     37 #include <arm/xscale/pxa2x0var.h>
     38 #include <arm/xscale/pxa2x0_gpio.h>
     39 #include <arm/xscale/pxa2x0_mci.h>
     40 
     41 #include <dev/sdmmc/sdmmcreg.h>
     42 
     43 
     44 static int pxamci_match(device_t, cfdata_t, void *);
     45 static void pxamci_attach(device_t, device_t, void *);
     46 
     47 static int nbpmci_intr(void *);
     48 
     49 static uint32_t nbpmci_get_ocr(void *);
     50 static int nbpmci_set_power(void *, uint32_t);
     51 static int nbpmci_card_detect(void *);
     52 static int nbpmci_write_protect(void *);
     53 
     54 CFATTACH_DECL_NEW(nbpmci, sizeof(struct pxamci_softc),
     55     pxamci_match, pxamci_attach, NULL, NULL);
     56 
     57 /* ARGSUSED */
     58 static int
     59 pxamci_match(device_t parent, cfdata_t match, void *aux)
     60 {
     61 	struct pxaip_attach_args *pxa = aux;
     62 
     63 	if (strcmp(pxa->pxa_name, match->cf_name) != 0 ||
     64 	    !platid_match(&platid, &platid_mask_MACH_PSIONTEKLOGIX_NETBOOK_PRO))
     65 		return 0;
     66 
     67 	pxa->pxa_size = PXA2X0_MMC_SIZE;
     68 
     69 	return 1;
     70 }
     71 
     72 /* ARGSUSED */
     73 static void
     74 pxamci_attach(device_t parent, device_t self, void *aux)
     75 {
     76 	struct pxamci_softc *sc = device_private(self);
     77 	struct pxaip_attach_args *pxa = aux;
     78 	void *ih;
     79 
     80 	pxa2x0_gpio_set_function(9, GPIO_IN);
     81 	ih = pxa2x0_gpio_intr_establish(9, IST_EDGE_BOTH, IPL_BIO,
     82 	    nbpmci_intr, sc);
     83 	if (ih == NULL) {
     84 		aprint_error_dev(self,
     85 		    "unable to establish card detect interrupt\n");
     86 		return;
     87 	}
     88 
     89 	sc->sc_tag.cookie = sc;
     90 	sc->sc_tag.get_ocr = nbpmci_get_ocr;
     91 	sc->sc_tag.set_power = nbpmci_set_power;
     92 	sc->sc_tag.card_detect = nbpmci_card_detect;
     93 	sc->sc_tag.write_protect = nbpmci_write_protect;
     94 	sc->sc_caps = 0;
     95 
     96 	if (pxamci_attach_sub(self, pxa))
     97 		aprint_error_dev(self, "unable to attach MMC controller\n");
     98 
     99 	if (!pmf_device_register(self, NULL, NULL))
    100 		aprint_error_dev(self, "couldn't establish power handler\n");
    101 }
    102 
    103 static int
    104 nbpmci_intr(void *arg)
    105 {
    106 	struct pxamci_softc *sc = (struct pxamci_softc *)arg;
    107 
    108 	pxa2x0_gpio_clear_intr(9);
    109 
    110 	pxamci_card_detect_event(sc);
    111 
    112 	return 1;
    113 }
    114 
    115 /* ARGSUSED */
    116 static uint32_t
    117 nbpmci_get_ocr(void *arg)
    118 {
    119 
    120 	return MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V;
    121 }
    122 
    123 /* ARGSUSED */
    124 static int
    125 nbpmci_set_power(void *arg, uint32_t ocr)
    126 {
    127 
    128 //	nbp_pcon_command(I2C_SETMMCPOWER, vdd_bits ? 1 : 0, 0, NULL);
    129 	return 0;
    130 }
    131 
    132 /*
    133  * Return non-zero if the card is currently inserted.
    134  */
    135 /* ARGSUSED */
    136 static int
    137 nbpmci_card_detect(void *arg)
    138 {
    139 
    140 	if (pxa2x0_gpio_get_bit(9))
    141 		return 0;
    142 	return 1;
    143 }
    144 
    145 /*
    146  * Return non-zero if the card is currently write-protected.
    147  */
    148 /* ARGSUSED */
    149 static int
    150 nbpmci_write_protect(void *arg)
    151 {
    152 
    153 	return 0;
    154 }
    155