dwc2_fdt.c revision 1.4
1 /* $NetBSD: dwc2_fdt.c,v 1.4 2019/01/19 20:53:32 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nick Hudson 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: dwc2_fdt.c,v 1.4 2019/01/19 20:53:32 jmcneill Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/mutex.h> 39 #include <sys/bus.h> 40 #include <sys/workqueue.h> 41 42 #include <dev/fdt/fdtvar.h> 43 44 #include <dev/usb/usb.h> 45 #include <dev/usb/usbdi.h> 46 #include <dev/usb/usbdivar.h> 47 #include <dev/usb/usb_mem.h> 48 49 #include <dwc2/dwc2var.h> 50 51 #include <dwc2/dwc2.h> 52 #include "dwc2_core.h" 53 54 struct dwc2_fdt_softc { 55 struct dwc2_softc sc_dwc2; 56 57 struct dwc2_core_params sc_params; 58 59 void *sc_ih; 60 int sc_phandle; 61 }; 62 63 static int dwc2_fdt_match(device_t, struct cfdata *, void *); 64 static void dwc2_fdt_attach(device_t, device_t, void *); 65 static void dwc2_fdt_deferred(device_t); 66 67 static void dwc2_fdt_amlogic_params(struct dwc2_fdt_softc *, struct dwc2_core_params *); 68 static void dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *, struct dwc2_core_params *); 69 70 struct dwc2_fdt_config { 71 void (*params)(struct dwc2_fdt_softc *, struct dwc2_core_params *); 72 }; 73 74 static const struct dwc2_fdt_config dwc2_fdt_rk3066_config = { 75 .params = dwc2_fdt_rockchip_params, 76 }; 77 78 static const struct dwc2_fdt_config dwc2_fdt_meson8b_config = { 79 .params = dwc2_fdt_amlogic_params, 80 }; 81 82 static const struct dwc2_fdt_config dwc2_fdt_generic_config = { 83 }; 84 85 static const struct of_compat_data compat_data[] = { 86 { "amlogic,meson8b-usb", (uintptr_t)&dwc2_fdt_meson8b_config }, 87 { "rockchip,rk3066-usb", (uintptr_t)&dwc2_fdt_rk3066_config }, 88 { "snps,dwc2", (uintptr_t)&dwc2_fdt_generic_config }, 89 { NULL } 90 }; 91 92 CFATTACH_DECL_NEW(dwc2_fdt, sizeof(struct dwc2_fdt_softc), 93 dwc2_fdt_match, dwc2_fdt_attach, NULL, NULL); 94 95 /* ARGSUSED */ 96 static int 97 dwc2_fdt_match(device_t parent, struct cfdata *match, void *aux) 98 { 99 struct fdt_attach_args * const faa = aux; 100 101 return of_match_compat_data(faa->faa_phandle, compat_data); 102 } 103 104 /* ARGSUSED */ 105 static void 106 dwc2_fdt_attach(device_t parent, device_t self, void *aux) 107 { 108 struct dwc2_fdt_softc *sc = device_private(self); 109 struct fdt_attach_args * const faa = aux; 110 const int phandle = faa->faa_phandle; 111 const struct dwc2_fdt_config *conf = 112 (void *)of_search_compatible(phandle, compat_data)->data; 113 char intrstr[128]; 114 struct fdtbus_phy *phy; 115 struct clk *clk; 116 bus_addr_t addr; 117 bus_size_t size; 118 int error; 119 120 const char *dr_mode = fdtbus_get_string(phandle, "dr_mode"); 121 if (dr_mode == NULL || strcmp(dr_mode, "host") != 0) { 122 aprint_error(": mode '%s' not supported\n", dr_mode); 123 return; 124 } 125 126 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 127 aprint_error(": couldn't get registers\n"); 128 return; 129 } 130 131 clk = fdtbus_clock_get(phandle, "otg"); 132 if (clk == NULL || clk_enable(clk) != 0) { 133 aprint_error(": couldn't enable otg clock\n"); 134 return; 135 } 136 137 /* Enable optional phy */ 138 phy = fdtbus_phy_get(phandle, "usb2-phy"); 139 if (phy && fdtbus_phy_enable(phy, true) != 0) { 140 aprint_error(": couldn't enable phy\n"); 141 return; 142 } 143 144 sc->sc_phandle = phandle; 145 sc->sc_dwc2.sc_dev = self; 146 sc->sc_dwc2.sc_iot = faa->faa_bst; 147 sc->sc_dwc2.sc_bus.ub_dmatag = faa->faa_dmat; 148 149 error = bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_dwc2.sc_ioh); 150 if (error) { 151 aprint_error(": couldn't map device\n"); 152 return; 153 } 154 155 if (conf->params) { 156 conf->params(sc, &sc->sc_params); 157 sc->sc_dwc2.sc_params = &sc->sc_params; 158 } 159 160 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 161 aprint_error(": failed to decode interrupt\n"); 162 return; 163 } 164 165 aprint_naive("\n"); 166 aprint_normal(": DesignWare USB2 OTG\n"); 167 168 sc->sc_ih = fdtbus_intr_establish(phandle, 0, IPL_VM, FDT_INTR_MPSAFE, 169 dwc2_intr, &sc->sc_dwc2); 170 171 if (sc->sc_ih == NULL) { 172 aprint_error_dev(self, "failed to establish interrupt %s\n", 173 intrstr); 174 goto fail; 175 } 176 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 177 config_interrupts(self, dwc2_fdt_deferred); 178 179 return; 180 181 fail: 182 if (sc->sc_ih) { 183 fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih); 184 sc->sc_ih = NULL; 185 } 186 bus_space_unmap(sc->sc_dwc2.sc_iot, sc->sc_dwc2.sc_ioh, size); 187 } 188 189 static void 190 dwc2_fdt_deferred(device_t self) 191 { 192 struct dwc2_fdt_softc *sc = device_private(self); 193 int error; 194 195 error = dwc2_init(&sc->sc_dwc2); 196 if (error != 0) { 197 aprint_error_dev(self, "couldn't initialize host, error=%d\n", 198 error); 199 return; 200 } 201 sc->sc_dwc2.sc_child = config_found(sc->sc_dwc2.sc_dev, 202 &sc->sc_dwc2.sc_bus, usbctlprint); 203 } 204 205 static void 206 dwc2_fdt_amlogic_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params) 207 { 208 dwc2_set_all_params(params, -1); 209 210 params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; 211 params->speed = DWC2_SPEED_PARAM_HIGH; 212 params->host_rx_fifo_size = 512; 213 params->host_nperio_tx_fifo_size = 500; 214 params->host_perio_tx_fifo_size = 500; 215 params->host_channels = 16; 216 params->phy_type = DWC2_PHY_TYPE_PARAM_UTMI; 217 params->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT; 218 #ifdef DWC2_POWER_DOWN_PARAM_NONE 219 params->power_down = DWC2_POWER_DOWN_PARAM_NONE; 220 #endif 221 } 222 223 static void 224 dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params) 225 { 226 dwc2_set_all_params(params, -1); 227 228 params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; 229 params->host_rx_fifo_size = 525; 230 params->host_nperio_tx_fifo_size = 128; 231 params->host_perio_tx_fifo_size = 256; 232 params->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; 233 } 234
Indexes created Mon Sep 22 21:09:42 GMT 2025