151 lines
4.4 KiB
C
151 lines
4.4 KiB
C
/* $NetBSD: ohci_fdt.c,v 1.7 2021/08/07 16:19:10 thorpej Exp $ */
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/*-
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* Copyright (c) 2015-2017 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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__KERNEL_RCSID(0, "$NetBSD: ohci_fdt.c,v 1.7 2021/08/07 16:19:10 thorpej Exp $");
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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/intr.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdivar.h>
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#include <dev/usb/usb_mem.h>
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#include <dev/usb/ohcireg.h>
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#include <dev/usb/ohcivar.h>
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#include <dev/fdt/fdtvar.h>
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static int ohci_fdt_match(device_t, cfdata_t, void *);
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static void ohci_fdt_attach(device_t, device_t, void *);
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CFATTACH_DECL2_NEW(ohci_fdt, sizeof(struct ohci_softc),
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ohci_fdt_match, ohci_fdt_attach, NULL,
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ohci_activate, NULL, ohci_childdet);
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static const struct device_compatible_entry compat_data[] = {
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{ .compat = "generic-ohci" },
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DEVICE_COMPAT_EOL
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};
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static int
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ohci_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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return of_compatible_match(faa->faa_phandle, compat_data);
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}
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static void
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ohci_fdt_attach(device_t parent, device_t self, void *aux)
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{
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struct ohci_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 fdtbus_reset *rst;
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struct fdtbus_phy *phy;
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struct clk *clk;
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char intrstr[128];
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bus_addr_t addr;
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bus_size_t size;
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int error;
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void *ih;
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u_int n;
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if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
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aprint_error(": couldn't get registers\n");
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return;
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}
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/* Enable clocks */
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for (n = 0; (clk = fdtbus_clock_get_index(phandle, n)) != NULL; n++)
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if (clk_enable(clk) != 0) {
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aprint_error(": couldn't enable clock #%d\n", n);
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return;
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}
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/* De-assert resets */
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for (n = 0; (rst = fdtbus_reset_get_index(phandle, n)) != NULL; n++)
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if (fdtbus_reset_deassert(rst) != 0) {
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aprint_error(": couldn't de-assert reset #%d\n", n);
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return;
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}
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/* Enable optional phy */
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phy = fdtbus_phy_get(phandle, "usb");
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if (phy && fdtbus_phy_enable(phy, true) != 0) {
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aprint_error(": couldn't enable phy\n");
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return;
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}
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sc->sc_dev = self;
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sc->sc_bus.ub_hcpriv = sc;
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sc->sc_bus.ub_dmatag = faa->faa_dmat;
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sc->sc_flags = 0;
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sc->sc_size = size;
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sc->iot = faa->faa_bst;
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if (bus_space_map(sc->iot, addr, size, 0, &sc->ioh) != 0) {
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aprint_error(": couldn't map registers\n");
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return;
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}
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aprint_naive("\n");
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aprint_normal(": OHCI\n");
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/* Disable interrupts */
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bus_space_write_4(sc->iot, sc->ioh, OHCI_INTERRUPT_DISABLE,
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OHCI_ALL_INTRS);
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if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
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aprint_error_dev(self, "failed to decode interrupt\n");
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return;
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}
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ih = fdtbus_intr_establish_xname(phandle, 0, IPL_USB, FDT_INTR_MPSAFE,
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ohci_intr, sc, device_xname(self));
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if (ih == NULL) {
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aprint_error_dev(self, "couldn't establish interrupt on %s\n",
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intrstr);
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return;
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}
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aprint_normal_dev(self, "interrupting on %s\n", intrstr);
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error = ohci_init(sc);
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if (error) {
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aprint_error_dev(self, "init failed, error = %d\n", error);
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return;
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}
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pmf_device_register1(self, NULL, NULL, ohci_shutdown);
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sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);
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}
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