242 lines
6.9 KiB
C
242 lines
6.9 KiB
C
/* $NetBSD: dwc2_fdt.c,v 1.13 2023/07/31 04:59:47 rin Exp $ */
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/*-
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* Copyright (c) 2013 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nick Hudson
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dwc2_fdt.c,v 1.13 2023/07/31 04:59:47 rin Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/mutex.h>
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#include <sys/bus.h>
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#include <sys/workqueue.h>
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#include <dev/fdt/fdtvar.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 <dwc2/dwc2var.h>
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#include <dwc2/dwc2.h>
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#include "dwc2_core.h"
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struct dwc2_fdt_softc {
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struct dwc2_softc sc_dwc2;
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struct dwc2_core_params sc_params;
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void *sc_ih;
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int sc_phandle;
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};
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static int dwc2_fdt_match(device_t, struct cfdata *, void *);
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static void dwc2_fdt_attach(device_t, device_t, void *);
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static void dwc2_fdt_deferred(device_t);
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static void dwc2_fdt_amlogic_params(struct dwc2_fdt_softc *, struct dwc2_core_params *);
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static void dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *, struct dwc2_core_params *);
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struct dwc2_fdt_config {
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void (*params)(struct dwc2_fdt_softc *, struct dwc2_core_params *);
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};
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static const struct dwc2_fdt_config dwc2_fdt_rk3066_config = {
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.params = dwc2_fdt_rockchip_params,
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};
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static const struct dwc2_fdt_config dwc2_fdt_meson8b_config = {
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.params = dwc2_fdt_amlogic_params,
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};
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static const struct dwc2_fdt_config dwc2_fdt_generic_config = {
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};
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static const struct device_compatible_entry compat_data[] = {
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{ .compat = "amlogic,meson8b-usb",
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.data = &dwc2_fdt_meson8b_config },
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{ .compat = "amlogic,meson-gxbb-usb",
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.data = &dwc2_fdt_meson8b_config },
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{ .compat = "rockchip,rk3066-usb",
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.data = &dwc2_fdt_rk3066_config },
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{ .compat = "snps,dwc2",
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.data = &dwc2_fdt_generic_config },
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DEVICE_COMPAT_EOL
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};
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CFATTACH_DECL_NEW(dwc2_fdt, sizeof(struct dwc2_fdt_softc),
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dwc2_fdt_match, dwc2_fdt_attach, NULL, NULL);
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/* ARGSUSED */
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static int
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dwc2_fdt_match(device_t parent, struct cfdata *match, 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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/* ARGSUSED */
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static void
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dwc2_fdt_attach(device_t parent, device_t self, void *aux)
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{
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struct dwc2_fdt_softc *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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const struct dwc2_fdt_config *conf =
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of_compatible_lookup(phandle, compat_data)->data;
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char intrstr[128];
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struct fdtbus_phy *phy;
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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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int error;
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const char *dr_mode = fdtbus_get_string(phandle, "dr_mode");
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if (dr_mode == NULL || strcmp(dr_mode, "host") != 0) {
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aprint_error(": mode '%s' not supported\n", dr_mode);
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return;
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}
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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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clk = fdtbus_clock_get(phandle, "otg");
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if (clk == NULL || clk_enable(clk) != 0) {
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aprint_error(": couldn't enable otg clock\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, "usb2-phy");
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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_phandle = phandle;
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sc->sc_dwc2.sc_dev = self;
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sc->sc_dwc2.sc_iot = faa->faa_bst;
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sc->sc_dwc2.sc_bus.ub_dmatag = faa->faa_dmat;
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error = bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_dwc2.sc_ioh);
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if (error) {
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aprint_error(": couldn't map device\n");
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return;
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}
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if (conf->params) {
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conf->params(sc, &sc->sc_params);
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sc->sc_dwc2.sc_params = &sc->sc_params;
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}
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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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aprint_naive("\n");
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aprint_normal(": DesignWare USB2 OTG\n");
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sc->sc_ih = fdtbus_intr_establish_xname(phandle, 0, IPL_VM,
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FDT_INTR_MPSAFE, dwc2_intr, &sc->sc_dwc2, device_xname(self));
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "failed to establish interrupt %s\n",
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intrstr);
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goto fail;
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}
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aprint_normal_dev(self, "interrupting on %s\n", intrstr);
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config_interrupts(self, dwc2_fdt_deferred);
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return;
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fail:
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if (sc->sc_ih) {
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fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih);
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sc->sc_ih = NULL;
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}
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bus_space_unmap(sc->sc_dwc2.sc_iot, sc->sc_dwc2.sc_ioh, size);
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}
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static void
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dwc2_fdt_deferred(device_t self)
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{
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struct dwc2_fdt_softc *sc = device_private(self);
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int error;
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error = dwc2_init(&sc->sc_dwc2);
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if (error != 0) {
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aprint_error_dev(self, "couldn't initialize host, error=%d\n",
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error);
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return;
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}
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sc->sc_dwc2.sc_child = config_found(sc->sc_dwc2.sc_dev,
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&sc->sc_dwc2.sc_bus, usbctlprint, CFARGS_NONE);
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}
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static void
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dwc2_fdt_amlogic_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params)
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{
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dwc2_set_all_params(params, -1);
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params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
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params->speed = DWC2_SPEED_PARAM_HIGH;
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params->dma_enable = 1;
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params->enable_dynamic_fifo = 1;
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params->host_rx_fifo_size = 512;
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params->host_nperio_tx_fifo_size = 500;
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params->host_perio_tx_fifo_size = 500;
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params->host_channels = 16;
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params->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
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params->reload_ctl = 1;
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params->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT;
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#ifdef DWC2_POWER_DOWN_PARAM_NONE
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params->power_down = DWC2_POWER_DOWN_PARAM_NONE;
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#endif
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}
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static void
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dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params)
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{
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dwc2_set_all_params(params, -1);
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params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
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params->host_rx_fifo_size = 525;
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params->host_nperio_tx_fifo_size = 128;
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params->host_perio_tx_fifo_size = 256;
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params->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
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}
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