/* $NetBSD: ti_ehci.c,v 1.1.2.2 2019/11/27 13:46:44 martin Exp $ */ /*- * Copyright (c) 2015-2019 Jared McNeill * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ti_ehci.c,v 1.1.2.2 2019/11/27 13:46:44 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #define TI_EHCI_NPORTS 3 static int ti_ehci_match(device_t, cfdata_t, void *); static void ti_ehci_attach(device_t, device_t, void *); CFATTACH_DECL2_NEW(ti_ehci, sizeof(struct ehci_softc), ti_ehci_match, ti_ehci_attach, NULL, ehci_activate, NULL, ehci_childdet); static int ti_ehci_match(device_t parent, cfdata_t cf, void *aux) { const char * const compatible[] = { "ti,ehci-omap", NULL }; struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void ti_ehci_attach(device_t parent, device_t self, void *aux) { struct ehci_softc * const sc = device_private(self); struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; struct fdtbus_reset *rst; struct fdtbus_phy *phy; struct clk *clk; char intrstr[128]; bus_addr_t addr; bus_size_t size; int error; void *ih; u_int n; if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return; } /* Enable clocks */ for (n = 0; (clk = fdtbus_clock_get_index(phandle, n)) != NULL; n++) if (clk_enable(clk) != 0) { aprint_error(": couldn't enable clock #%d\n", n); return; } /* De-assert resets */ for (n = 0; (rst = fdtbus_reset_get_index(phandle, n)) != NULL; n++) if (fdtbus_reset_deassert(rst) != 0) { aprint_error(": couldn't de-assert reset #%d\n", n); return; } sc->sc_dev = self; sc->sc_bus.ub_hcpriv = sc; sc->sc_bus.ub_dmatag = faa->faa_dmat; sc->sc_bus.ub_revision = USBREV_2_0; if (of_hasprop(phandle, "has-transaction-translator")) sc->sc_flags |= EHCIF_ETTF; else sc->sc_ncomp = 1; sc->sc_size = size; sc->iot = faa->faa_bst; if (bus_space_map(sc->iot, addr, size, 0, &sc->ioh) != 0) { aprint_error(": couldn't map registers\n"); return; } aprint_naive("\n"); aprint_normal(": EHCI\n"); /* Enable PHYs */ for (n = 0; n < TI_EHCI_NPORTS; n++) { phy = fdtbus_phy_get_index(phandle, n); if (phy && fdtbus_phy_enable(phy, true) != 0) { aprint_error(": couldn't enable phy\n"); return; } } /* Disable interrupts */ sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH); EOWRITE4(sc, EHCI_USBINTR, 0); if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { aprint_error_dev(self, "failed to decode interrupt\n"); return; } ih = fdtbus_intr_establish(phandle, 0, IPL_USB, FDT_INTR_MPSAFE, ehci_intr, sc); if (ih == NULL) { aprint_error_dev(self, "couldn't establish interrupt on %s\n", intrstr); return; } aprint_normal_dev(self, "interrupting on %s\n", intrstr); error = ehci_init(sc); if (error) { aprint_error_dev(self, "init failed, error = %d\n", error); return; } pmf_device_register1(self, NULL, NULL, ehci_shutdown); sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint); }