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145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/* $NetBSD: imx51_esdhc.c,v 1.3 2015/05/26 05:11:33 hkenken Exp $ */
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/*-
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* Copyright (c) 2012 Genetec Corporation. All rights reserved.
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* Written by Hiroyuki Bessho for Genetec Corporation.
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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
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: imx51_esdhc.c,v 1.3 2015/05/26 05:11:33 hkenken Exp $");
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#include "opt_imx.h"
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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 <sys/pmf.h>
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#include <machine/intr.h>
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#include <dev/sdmmc/sdhcvar.h>
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#include <dev/sdmmc/sdmmcvar.h>
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#include <arm/imx/imx51reg.h>
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#include <arm/imx/imx51var.h>
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#include <arm/imx/imx51_ccmvar.h>
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struct sdhc_axi_softc {
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struct sdhc_softc sc_sdhc;
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/* we have only one slot */
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struct sdhc_host *sc_hosts[1];
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void *sc_ih;
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};
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static int sdhc_match(device_t, cfdata_t, void *);
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static void sdhc_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(sdhc_axi, sizeof(struct sdhc_axi_softc),
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sdhc_match, sdhc_attach, NULL, NULL);
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static int
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sdhc_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct axi_attach_args *aa = aux;
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switch (aa->aa_addr) {
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case ESDHC1_BASE:
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case ESDHC2_BASE:
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case ESDHC3_BASE:
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case ESDHC4_BASE:
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return 1;
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}
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return 0;
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}
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static void
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sdhc_attach(device_t parent, device_t self, void *aux)
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{
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struct sdhc_axi_softc *sc = device_private(self);
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struct axi_attach_args *aa = aux;
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bus_space_tag_t iot = aa->aa_iot;
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bus_space_handle_t ioh;
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u_int perclk = 0;
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sc->sc_sdhc.sc_dev = self;
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sc->sc_sdhc.sc_dmat = aa->aa_dmat;
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if (bus_space_map(iot, aa->aa_addr, ESDHC_SIZE, 0, &ioh)) {
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aprint_error_dev(self, "can't map\n");
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return;
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}
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aprint_normal(": SD/MMC host controller\n");
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aprint_naive("\n");
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sc->sc_sdhc.sc_host = sc->sc_hosts;
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/* base clock frequency in kHz */
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switch (aa->aa_addr) {
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case ESDHC1_BASE:
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perclk = imx51_get_clock(IMX51CLK_ESDHC1_CLK_ROOT);
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break;;
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case ESDHC2_BASE:
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perclk = imx51_get_clock(IMX51CLK_ESDHC2_CLK_ROOT);
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break;;
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case ESDHC3_BASE:
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perclk = imx51_get_clock(IMX51CLK_ESDHC3_CLK_ROOT);
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break;;
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case ESDHC4_BASE:
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perclk = imx51_get_clock(IMX51CLK_ESDHC4_CLK_ROOT);
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break;;
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}
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sc->sc_sdhc.sc_clkbase = perclk / 1000;
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sc->sc_sdhc.sc_flags |= SDHC_FLAG_USE_DMA;
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sc->sc_sdhc.sc_flags |= SDHC_FLAG_HAVE_DVS |
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SDHC_FLAG_NO_PWR0 |
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SDHC_FLAG_32BIT_ACCESS |
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SDHC_FLAG_ENHANCED;
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sc->sc_ih = intr_establish(aa->aa_irq, IPL_SDMMC, IST_LEVEL,
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sdhc_intr, &sc->sc_sdhc);
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "can't establish interrupt\n");
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return;
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}
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if (sdhc_host_found(&sc->sc_sdhc, iot, ioh, ESDHC_SIZE)) {
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aprint_error_dev(self, "can't initialize host\n");
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return;
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}
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if (!pmf_device_register1(self, sdhc_suspend, sdhc_resume,
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sdhc_shutdown)) {
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aprint_error_dev(self,
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"can't establish power hook\n");
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}
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}
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