dwc2_fdt.c revision 1.6
1 /* $NetBSD: dwc2_fdt.c,v 1.6 2021/01/15 22:35:39 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 1.6 2021/01/15 22:35:39 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 { "amlogic,meson-gxbb-usb", (uintptr_t)&dwc2_fdt_meson8b_config }, 88 { "rockchip,rk3066-usb", (uintptr_t)&dwc2_fdt_rk3066_config }, 89 { "snps,dwc2", (uintptr_t)&dwc2_fdt_generic_config }, 90 { NULL } 91 }; 92 93 CFATTACH_DECL_NEW(dwc2_fdt, sizeof(struct dwc2_fdt_softc), 94 dwc2_fdt_match, dwc2_fdt_attach, NULL, NULL); 95 96 /* ARGSUSED */ 97 static int 98 dwc2_fdt_match(device_t parent, struct cfdata *match, void *aux) 99 { 100 struct fdt_attach_args * const faa = aux; 101 102 return of_match_compat_data(faa->faa_phandle, compat_data); 103 } 104 105 /* ARGSUSED */ 106 static void 107 dwc2_fdt_attach(device_t parent, device_t self, void *aux) 108 { 109 struct dwc2_fdt_softc *sc = device_private(self); 110 struct fdt_attach_args * const faa = aux; 111 const int phandle = faa->faa_phandle; 112 const struct dwc2_fdt_config *conf = 113 (void *)of_search_compatible(phandle, compat_data)->data; 114 char intrstr[128]; 115 struct fdtbus_phy *phy; 116 struct clk *clk; 117 bus_addr_t addr; 118 bus_size_t size; 119 int error; 120 121 const char *dr_mode = fdtbus_get_string(phandle, "dr_mode"); 122 if (dr_mode == NULL || strcmp(dr_mode, "host") != 0) { 123 aprint_error(": mode '%s' not supported\n", dr_mode); 124 return; 125 } 126 127 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 128 aprint_error(": couldn't get registers\n"); 129 return; 130 } 131 132 clk = fdtbus_clock_get(phandle, "otg"); 133 if (clk == NULL || clk_enable(clk) != 0) { 134 aprint_error(": couldn't enable otg clock\n"); 135 return; 136 } 137 138 /* Enable optional phy */ 139 phy = fdtbus_phy_get(phandle, "usb2-phy"); 140 if (phy && fdtbus_phy_enable(phy, true) != 0) { 141 aprint_error(": couldn't enable phy\n"); 142 return; 143 } 144 145 sc->sc_phandle = phandle; 146 sc->sc_dwc2.sc_dev = self; 147 sc->sc_dwc2.sc_iot = faa->faa_bst; 148 sc->sc_dwc2.sc_bus.ub_dmatag = faa->faa_dmat; 149 150 error = bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_dwc2.sc_ioh); 151 if (error) { 152 aprint_error(": couldn't map device\n"); 153 return; 154 } 155 156 if (conf->params) { 157 conf->params(sc, &sc->sc_params); 158 sc->sc_dwc2.sc_params = &sc->sc_params; 159 } 160 161 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 162 aprint_error(": failed to decode interrupt\n"); 163 return; 164 } 165 166 aprint_naive("\n"); 167 aprint_normal(": DesignWare USB2 OTG\n"); 168 169 sc->sc_ih = fdtbus_intr_establish_xname(phandle, 0, IPL_VM, 170 FDT_INTR_MPSAFE, dwc2_intr, &sc->sc_dwc2, device_xname(self)); 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->dma_enable = 1; 213 params->enable_dynamic_fifo = 1, 214 params->host_rx_fifo_size = 512; 215 params->host_nperio_tx_fifo_size = 500; 216 params->host_perio_tx_fifo_size = 500; 217 params->host_channels = 16; 218 params->phy_type = DWC2_PHY_TYPE_PARAM_UTMI; 219 params->reload_ctl = 1, 220 params->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT; 221 #ifdef DWC2_POWER_DOWN_PARAM_NONE 222 params->power_down = DWC2_POWER_DOWN_PARAM_NONE; 223 #endif 224 } 225 226 static void 227 dwc2_fdt_rockchip_params(struct dwc2_fdt_softc *sc, struct dwc2_core_params *params) 228 { 229 dwc2_set_all_params(params, -1); 230 231 params->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; 232 params->host_rx_fifo_size = 525; 233 params->host_nperio_tx_fifo_size = 128; 234 params->host_perio_tx_fifo_size = 256; 235 params->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; 236 } 237
Indexes created Wed Sep 24 02:09:48 GMT 2025