netwalker_usb.c revision 1.1.6.2
1 /* 2 * Copyright (c) 2010 Genetec Corporation. All rights reserved. 3 * Written by Hiroyuki Bessho for Genetec Corporation. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 * POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: netwalker_usb.c,v 1.1.6.2 2011/03/05 20:50:08 rmind Exp $"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/conf.h> 33 #include <sys/kernel.h> 34 #include <sys/device.h> 35 #include <sys/intr.h> 36 #include <sys/bus.h> 37 38 #include <dev/usb/usb.h> 39 #include <dev/usb/usbdi.h> 40 #include <dev/usb/usbdivar.h> 41 #include <dev/usb/usb_mem.h> 42 43 #include <dev/usb/ehcireg.h> 44 #include <dev/usb/ehcivar.h> 45 46 #include <arm/imx/imx51reg.h> 47 #include <arm/imx/imx51var.h> 48 #include <arm/imx/imxusbreg.h> 49 #include <arm/imx/imxusbvar.h> 50 #include <arm/imx/imx51_iomuxreg.h> 51 #include <arm/imx/imxgpiovar.h> 52 #include "locators.h" 53 54 55 struct netwalker_usbc_softc { 56 struct imxusbc_softc sc_imxusbc; 57 }; 58 59 60 static int imxusbc_match(device_t, cfdata_t, void *); 61 static void imxusbc_attach(device_t, device_t, void *); 62 static void netwalker_usb_init(struct imxehci_softc *); 63 64 static void init_otg(struct imxehci_softc *); 65 static void init_h1(struct imxehci_softc *); 66 67 extern const struct iomux_conf iomux_usb1_config[]; 68 69 /* attach structures */ 70 CFATTACH_DECL_NEW(imxusbc_axi, sizeof(struct netwalker_usbc_softc), 71 imxusbc_match, imxusbc_attach, NULL, NULL); 72 73 static int 74 imxusbc_match(device_t parent, cfdata_t cf, void *aux) 75 { 76 struct axi_attach_args *aa = aux; 77 78 printf("%s\n", __func__); 79 80 if (aa->aa_addr == USBOH3_BASE) 81 return 1; 82 return 0; 83 } 84 85 static void 86 imxusbc_attach(device_t parent, device_t self, void *aux) 87 { 88 struct axi_attach_args *aa = aux; 89 struct imxusbc_softc *sc = device_private(self); 90 91 sc->sc_init_md_hook = netwalker_usb_init; 92 sc->sc_setup_md_hook = NULL; 93 94 imxusbc_attach_common(parent, self, aa->aa_iot); 95 96 } 97 98 static void 99 netwalker_usb_init(struct imxehci_softc *sc) 100 { 101 switch (sc->sc_unit) { 102 case 0: /* OTG controller */ 103 init_otg(sc); 104 break; 105 case 1: /* EHCI Host 1 */ 106 init_h1(sc); 107 break; 108 default: 109 aprint_error_dev(sc->sc_hsc.sc_dev, "unit %d not supprted\n", 110 sc->sc_unit); 111 } 112 } 113 114 static void 115 init_otg(struct imxehci_softc *sc) 116 { 117 struct imxusbc_softc *usbc = sc->sc_usbc; 118 uint32_t reg; 119 120 sc->sc_iftype = IMXUSBC_IF_UTMI; 121 122 imxehci_reset(sc); 123 124 reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL0); 125 reg |= PHYCTRL0_OTG_OVER_CUR_DIS; 126 bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL0, reg); 127 128 reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_USBCTRL); 129 reg &= ~(USBCTRL_OWIR|USBCTRL_OPM); 130 bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_USBCTRL, reg); 131 132 reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL1); 133 reg = (reg & ~PHYCTRL1_PLLDIVVALUE_MASK) | PHYCTRL1_PLLDIVVALUE_24MHZ; 134 bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, USBOH3_PHYCTRL1, reg); 135 } 136 137 138 139 140 static void 141 init_h1(struct imxehci_softc *sc) 142 { 143 struct imxusbc_softc *usbc = sc->sc_usbc; 144 uint32_t reg; 145 146 /* output HIGH to USBH1_STP */ 147 gpio_data_write(GPIO_NO(1,27), 1); 148 gpio_set_direction(GPIO_NO(1, 27), GPIO_DIR_OUT); 149 150 iomux_mux_config(iomux_usb1_config); 151 152 delay(100 * 1000); 153 154 /* XXX enable USB clock */ 155 156 imxehci_reset(sc); 157 158 /* select external clock for Host 1 */ 159 reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, 160 USBOH3_USBCTRL1); 161 reg |= USBCTRL1_UH1_EXT_CLK_EN; 162 bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, 163 USBOH3_USBCTRL1, reg); 164 165 166 /* select ULPI interface for Host 1 */ 167 sc->sc_iftype = IMXUSBC_IF_ULPI; 168 169 reg = bus_space_read_4(usbc->sc_iot, usbc->sc_ioh, 170 USBOH3_USBCTRL); 171 reg &= ~(USBCTRL_H1PM); 172 reg |= USBCTRL_H1UIE|USBCTRL_H1WIE; 173 bus_space_write_4(usbc->sc_iot, usbc->sc_ioh, 174 USBOH3_USBCTRL, reg); 175 176 iomux_set_function(MUX_PIN_USBH1_STP, IOMUX_CONFIG_ALT0); 177 178 179 /* HUB RESET release */ 180 gpio_data_write(GPIO_NO(1, 7), 1); 181 gpio_set_direction(GPIO_NO(1, 7), GPIO_DIR_OUT); 182 183 184 /* Drive 26M_OSC_EN line high 3_1 */ 185 gpio_data_write(GPIO_NO(3, 1), 1); 186 gpio_set_direction(GPIO_NO(3, 1), GPIO_DIR_OUT); 187 188 /* Drive USB_CLK_EN_B line low 2_1 */ 189 gpio_data_write(GPIO_NO(2, 1), 0); 190 gpio_set_direction(GPIO_NO(2, 1), GPIO_DIR_IN); 191 192 /* MX51_PIN_EIM_D21 - De-assert USB PHY RESETB */ 193 delay(10 * 1000); 194 gpio_data_write(GPIO_NO(2, 5), 1); 195 gpio_set_direction(GPIO_NO(2, 5), GPIO_DIR_OUT); 196 iomux_set_function(MUX_PIN_EIM_D21, IOMUX_CONFIG_ALT1); 197 delay(5 * 1000); 198 } 199 200 /* 201 * IOMUX setting for USB Host1 202 * taken from Linux driver 203 */ 204 const struct iomux_conf iomux_usb1_config[] = { 205 206 { 207 /* Initially setup this pin for GPIO, and change to 208 * USBH1_STP later */ 209 .pin = MUX_PIN_USBH1_STP, 210 .mux = IOMUX_CONFIG_ALT2, 211 .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH | 212 PAD_CTL_KEEPER | PAD_CTL_HYS) 213 }, 214 215 { 216 /* Clock */ 217 .pin = MUX_PIN_USBH1_CLK, 218 .mux = IOMUX_CONFIG_ALT0, 219 .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH | 220 PAD_CTL_KEEPER | PAD_CTL_HYS) 221 }, 222 { 223 /* DIR */ 224 .pin = MUX_PIN_USBH1_DIR, 225 .mux = IOMUX_CONFIG_ALT0, 226 .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH | 227 PAD_CTL_KEEPER | PAD_CTL_HYS) 228 }, 229 230 { 231 /* NXT */ 232 .pin = MUX_PIN_USBH1_NXT, 233 .mux = IOMUX_CONFIG_ALT0, 234 .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH | 235 PAD_CTL_KEEPER | PAD_CTL_HYS) 236 }, 237 238 #define USBH1_DATA_CONFIG(n) \ 239 { \ 240 /* DATA n */ \ 241 .pin = __CONCAT(MUX_PIN_USBH1_DATA,n), \ 242 .mux = IOMUX_CONFIG_ALT0, \ 243 .pad = (PAD_CTL_SRE | PAD_CTL_DSE_HIGH | \ 244 PAD_CTL_KEEPER | PAD_CTL_PUS_100K_PU | \ 245 PAD_CTL_HYS), \ 246 /* XXX: what does 100K_PU with KEEPER ? */ \ 247 } 248 249 USBH1_DATA_CONFIG(0), 250 USBH1_DATA_CONFIG(1), 251 USBH1_DATA_CONFIG(2), 252 USBH1_DATA_CONFIG(3), 253 USBH1_DATA_CONFIG(4), 254 USBH1_DATA_CONFIG(5), 255 USBH1_DATA_CONFIG(6), 256 USBH1_DATA_CONFIG(7), 257 258 { 259 /* USB_CLK_EN_B GPIO2[1]*/ 260 .pin = MUX_PIN_EIM_D17, 261 .mux = IOMUX_CONFIG_ALT1, 262 .pad = (PAD_CTL_DSE_HIGH | PAD_CTL_PKE | PAD_CTL_SRE), 263 }, 264 265 { 266 /* USB PHY RESETB */ 267 .pin = MUX_PIN_EIM_D21, 268 .mux = IOMUX_CONFIG_ALT1, 269 .pad = (PAD_CTL_DSE_HIGH | PAD_CTL_KEEPER | 270 PAD_CTL_PUS_100K_PU | PAD_CTL_SRE) 271 }, 272 { 273 /* USB HUB RESET */ 274 .pin = MUX_PIN_GPIO1_7, 275 .mux = IOMUX_CONFIG_ALT0, 276 .pad = (PAD_CTL_DSE_HIGH | PAD_CTL_SRE), 277 }, 278 279 /* end of table */ 280 {.pin = IOMUX_CONF_EOT} 281 }; 282
Indexes created Wed Oct 01 18:09:54 GMT 2025