2021-01-27 06:10:18 +03:00
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/* $NetBSD: plmmc_fdt.c,v 1.4 2021/01/27 03:10:19 thorpej Exp $ */
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2017-06-02 14:04:01 +03:00
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/*-
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* Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca>
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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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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2021-01-27 06:10:18 +03:00
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__KERNEL_RCSID(0, "$NetBSD: plmmc_fdt.c,v 1.4 2021/01/27 03:10:19 thorpej Exp $");
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2017-06-02 14:04:01 +03:00
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <dev/fdt/fdtvar.h>
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#include <dev/ic/pl181reg.h>
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#include <dev/ic/pl181var.h>
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static int plmmc_fdt_match(device_t, cfdata_t, void *);
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static void plmmc_fdt_attach(device_t, device_t, void *);
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2021-01-27 06:10:18 +03:00
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static const struct device_compatible_entry compat_data[] = {
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{ .compat = "arm,pl180" },
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{ .compat = "arm,pl181" },
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DEVICE_COMPAT_EOL
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2017-06-02 14:04:01 +03:00
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};
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CFATTACH_DECL_NEW(plmmc_fdt, sizeof(struct plmmc_softc),
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plmmc_fdt_match, plmmc_fdt_attach, NULL, NULL);
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static int
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plmmc_fdt_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct fdt_attach_args * const faa = aux;
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2021-01-27 06:10:18 +03:00
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return of_compatible_match(faa->faa_phandle, compat_data);
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2017-06-02 14:04:01 +03:00
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}
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static void
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plmmc_fdt_attach(device_t parent, device_t self, void *aux)
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{
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struct plmmc_softc * const sc = device_private(self);
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struct fdt_attach_args * const faa = aux;
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const int phandle = faa->faa_phandle;
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struct clk *clk;
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bus_addr_t addr;
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bus_size_t size;
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void *ih;
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if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
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aprint_error(": missing 'reg' property\n");
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return;
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}
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clk = fdtbus_clock_get_index(phandle, 0);
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if (clk == NULL) {
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aprint_error(": couldn't get clock\n");
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return;
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}
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if (clk_enable(clk) != 0) {
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aprint_error(": couldn't enable clock\n");
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return;
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}
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2019-06-12 13:19:27 +03:00
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char intrstr[128];
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if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
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aprint_error(": failed to decode interrupt\n");
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return;
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}
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2017-06-02 14:04:01 +03:00
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sc->sc_dev = self;
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sc->sc_clock_freq = clk_get_rate(clk);
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of_getprop_uint32(phandle, "max-frequency", &sc->sc_max_freq);
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sc->sc_bst = faa->faa_bst;
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if (bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_bsh)) {
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aprint_error(": couldn't map device\n");
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return;
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}
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aprint_naive("\n");
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aprint_normal("\n");
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2021-01-15 21:42:40 +03:00
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ih = fdtbus_intr_establish_xname(phandle, 0, IPL_BIO, 0, plmmc_intr, sc,
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device_xname(self));
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2017-06-02 14:04:01 +03:00
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if (ih == NULL) {
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aprint_error_dev(self, "couldn't install interrupt handler\n");
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return;
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}
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2019-06-12 13:19:27 +03:00
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aprint_normal_dev(self, "interrupting on %s\n", intrstr);
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2017-06-02 14:04:01 +03:00
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plmmc_init(sc);
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}
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