/* $NetBSD: dwc2_fdt.c,v 1.5 2019/03/02 13:21:08 jmcneill Exp $ */ /*- * Copyright (c) 2013 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Nick Hudson * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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: dwc2_fdt.c,v 1.5 2019/03/02 13:21:08 jmcneill Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dwc2_core.h" struct dwc2_fdt_softc { struct dwc2_softc sc_dwc2; struct dwc2_core_params sc_params; void *sc_ih; int sc_phandle; }; static int dwc2_fdt_match(device_t, struct cfdata *, void *); static void dwc2_fdt_attach(device_t, device_t, void *); static void dwc2_fdt_deferred(device_t); static void dwc2_fdt_amlogic_params(struct dwc2_fdt_softc *, struct dwc2_core_params *); static void dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *, struct dwc2_core_params *); struct dwc2_fdt_config { void (*params)(struct dwc2_fdt_softc *, struct dwc2_core_params *); }; static const struct dwc2_fdt_config dwc2_fdt_rk3066_config = { .params = dwc2_fdt_rockchip_params, }; static const struct dwc2_fdt_config dwc2_fdt_meson8b_config = { .params = dwc2_fdt_amlogic_params, }; static const struct dwc2_fdt_config dwc2_fdt_generic_config = { }; static const struct of_compat_data compat_data[] = { { "amlogic,meson8b-usb", (uintptr_t)&dwc2_fdt_meson8b_config }, { "amlogic,meson-gxbb-usb", (uintptr_t)&dwc2_fdt_meson8b_config }, { "rockchip,rk3066-usb", (uintptr_t)&dwc2_fdt_rk3066_config }, { "snps,dwc2", (uintptr_t)&dwc2_fdt_generic_config }, { NULL } }; CFATTACH_DECL_NEW(dwc2_fdt, sizeof(struct dwc2_fdt_softc), dwc2_fdt_match, dwc2_fdt_attach, NULL, NULL); /* ARGSUSED */ static int dwc2_fdt_match(device_t parent, struct cfdata *match, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compat_data(faa->faa_phandle, compat_data); } /* ARGSUSED */ static void dwc2_fdt_attach(device_t parent, device_t self, void *aux) { struct dwc2_fdt_softc *sc = device_private(self); struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; const struct dwc2_fdt_config *conf = (void *)of_search_compatible(phandle, compat_data)->data; char intrstr[128]; struct fdtbus_phy *phy; struct clk *clk; bus_addr_t addr; bus_size_t size; int error; const char *dr_mode = fdtbus_get_string(phandle, "dr_mode"); if (dr_mode == NULL || strcmp(dr_mode, "host") != 0) { aprint_error(": mode '%s' not supported\n", dr_mode); return; } if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return; } clk = fdtbus_clock_get(phandle, "otg"); if (clk == NULL || clk_enable(clk) != 0) { aprint_error(": couldn't enable otg clock\n"); return; } /* Enable optional phy */ phy = fdtbus_phy_get(phandle, "usb2-phy"); if (phy && fdtbus_phy_enable(phy, true) != 0) { aprint_error(": couldn't enable phy\n"); return; } sc->sc_phandle = phandle; sc->sc_dwc2.sc_dev = self; sc->sc_dwc2.sc_iot = faa->faa_bst; sc->sc_dwc2.sc_bus.ub_dmatag = faa->faa_dmat; error = bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_dwc2.sc_ioh); if (error) { aprint_error(": couldn't map device\n"); return; } if (conf->params) { conf->params(sc, &sc->sc_params); sc->sc_dwc2.sc_params = &sc->sc_params; } if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { aprint_error(": failed to decode interrupt\n"); return; } aprint_naive("\n"); aprint_normal(": DesignWare USB2 OTG\n"); sc->sc_ih = fdtbus_intr_establish(phandle, 0, IPL_VM, FDT_INTR_MPSAFE, dwc2_intr, &sc->sc_dwc2); if (sc->sc_ih == NULL) { aprint_error_dev(self, "failed to establish interrupt %s\n", intrstr); goto fail; } aprint_normal_dev(self, "interrupting on %s\n", intrstr); config_interrupts(self, dwc2_fdt_deferred); return; fail: if (sc->sc_ih) { fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih); sc->sc_ih = NULL; } bus_space_unmap(sc->sc_dwc2.sc_iot, sc->sc_dwc2.sc_ioh, size); } static void dwc2_fdt_deferred(device_t self) { struct dwc2_fdt_softc *sc = device_private(self); int error; error = dwc2_init(&sc->sc_dwc2); if (error != 0) { aprint_error_dev(self, "couldn't initialize host, error=%d\n", error); return; } sc->sc_dwc2.sc_child = config_found(sc->sc_dwc2.sc_dev, &sc->sc_dwc2.sc_bus, usbctlprint); } static void dwc2_fdt_amlogic_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params) { dwc2_set_all_params(params, -1); params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; params->speed = DWC2_SPEED_PARAM_HIGH; params->dma_enable = 1; params->enable_dynamic_fifo = 1, params->host_rx_fifo_size = 512; params->host_nperio_tx_fifo_size = 500; params->host_perio_tx_fifo_size = 500; params->host_channels = 16; params->phy_type = DWC2_PHY_TYPE_PARAM_UTMI; params->reload_ctl = 1, params->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT; #ifdef DWC2_POWER_DOWN_PARAM_NONE params->power_down = DWC2_POWER_DOWN_PARAM_NONE; #endif } static void dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params) { dwc2_set_all_params(params, -1); params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; params->host_rx_fifo_size = 525; params->host_nperio_tx_fifo_size = 128; params->host_perio_tx_fifo_size = 256; params->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; }