1/* $NetBSD: ti_usbtll.c,v 1.2 2021/01/27 03:10:20 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 2019 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__KERNEL_RCSID(0, "$NetBSD: ti_usbtll.c,v 1.2 2021/01/27 03:10:20 thorpej Exp $"); 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/device.h> 34#include <sys/conf.h> 35#include <sys/mutex.h> 36#include <sys/bus.h> 37 38#include <dev/fdt/fdtvar.h> 39 40#include <arm/ti/ti_prcm.h> 41 42#define USBTLL_SYSCONFIG 0x10 43#define USBTLL_SYSCONFIG_CLOCKACTIVITY 0x00000100 44#define USBTLL_SYSCONFIG_SIDLEMODE 0x00000018 45#define USBTLL_SYSCONFIG_ENAWAKEUP 0x00000004 46#define USBTLL_SYSCONFIG_SOFTRESET 0x00000002 47#define USBTLL_SYSCONFIG_AUTOIDLE 0x00000001 48 49#define USBTLL_SYSSTATUS 0x14 50#define USBTLL_SYSSTATUS_RESETDONE 0x00000001 51 52#define USBTLL_SHARED_CONF 0x30 53#define USBTLL_SHARED_CONF_USB_90D_DDR_EN 0x00000040 54#define USBTLL_SHARED_CONF_USB_180D_SDR_EN 0x00000020 55#define USBTLL_SHARED_CONF_USB_DIVRATIO 0x0000001c 56#define USBTLL_SHARED_CONF_FCLK_REQ 0x00000002 57#define USBTLL_SHARED_CONF_FCLK_IS_ON 0x00000001 58 59#define USBTLL_CHANNEL_CONF(i) (0x40 + (0x04 * (i))) 60#define USBTLL_CHANNEL_CONF_FSLSLINESTATE 0x30000000 61#define USBTLL_CHANNEL_CONF_FSLSMODE 0x0f000000 62#define USBTLL_CHANNEL_CONF_TESTTXSE0 0x00100000 63#define USBTLL_CHANNEL_CONF_TESTTXDAT 0x00080000 64#define USBTLL_CHANNEL_CONF_TESTTXEN 0x00040000 65#define USBTLL_CHANNEL_CONF_TESTEN 0x00020000 66#define USBTLL_CHANNEL_CONF_DRVVBUS 0x00010000 67#define USBTLL_CHANNEL_CONF_CHRGVBUS 0x00008000 68#define USBTLL_CHANNEL_CONF_ULPINOBITSTUFF 0x00000800 69#define USBTLL_CHANNEL_CONF_ULPIAUTOIDLE 0x00000400 70#define USBTLL_CHANNEL_CONF_UTMIAUTOIDLE 0x00000200 71#define USBTLL_CHANNEL_CONF_ULPIDDRMODE 0x00000100 72#define USBTLL_CHANNEL_CONF_ULPIOUTCLKMODE 0x00000080 73#define USBTLL_CHANNEL_CONF_TLLFULLSPEED 0x00000040 74#define USBTLL_CHANNEL_CONF_TLLCONNECT 0x00000020 75#define USBTLL_CHANNEL_CONF_TLLATTACH 0x00000010 76#define USBTLL_CHANNEL_CONF_UTMIISADEV 0x00000008 77#define USBTLL_CHANNEL_CONF_CHANMODE 0x00000006 78#define USBTLL_CHANNEL_CONF_CHANEN 0x00000001 79 80static const struct device_compatible_entry compat_data[] = { 81 { .compat = "ti,usbhs-tll" }, 82 DEVICE_COMPAT_EOL 83}; 84 85struct ti_usbtll_softc { 86 device_t sc_dev; 87 bus_space_tag_t sc_bst; 88 bus_space_handle_t sc_bsh; 89}; 90 91static int ti_usbtll_match(device_t, cfdata_t, void *); 92static void ti_usbtll_attach(device_t, device_t, void *); 93 94CFATTACH_DECL_NEW(ti_usbtll, sizeof(struct ti_usbtll_softc), 95 ti_usbtll_match, ti_usbtll_attach, NULL, NULL); 96 97#define RD4(sc, reg) \ 98 bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 99#define WR4(sc, reg, val) \ 100 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 101 102static struct ti_usbtll_softc *ti_usbtll_sc = NULL; 103 104void tl_usbtll_enable_port(u_int); 105 106void 107tl_usbtll_enable_port(u_int port) 108{ 109 struct ti_usbtll_softc *sc = ti_usbtll_sc; 110 uint32_t val; 111 112 if (sc == NULL) { 113 printf("%s: driver not loaded\n", __func__); 114 return; 115 } 116 117 val = RD4(sc, USBTLL_CHANNEL_CONF(port)); 118 val &= ~(USBTLL_CHANNEL_CONF_ULPINOBITSTUFF| 119 USBTLL_CHANNEL_CONF_ULPIAUTOIDLE| 120 USBTLL_CHANNEL_CONF_ULPIDDRMODE); 121 val |= USBTLL_CHANNEL_CONF_CHANEN; 122 WR4(sc, USBTLL_CHANNEL_CONF(port), val); 123} 124 125static void 126ti_usbtll_reset(struct ti_usbtll_softc *sc) 127{ 128 uint32_t val; 129 int retry = 5000; 130 131 WR4(sc, USBTLL_SYSCONFIG, USBTLL_SYSCONFIG_SOFTRESET); 132 do { 133 val = RD4(sc, USBTLL_SYSSTATUS); 134 if (val & USBTLL_SYSSTATUS_RESETDONE) 135 break; 136 delay(10); 137 } while (--retry > 0); 138 if (retry == 0) 139 aprint_error_dev(sc->sc_dev, "reset timeout\n"); 140} 141 142static void 143ti_usbtll_init(struct ti_usbtll_softc *sc) 144{ 145 uint32_t val; 146 147 ti_usbtll_reset(sc); 148 149 val = USBTLL_SYSCONFIG_ENAWAKEUP | 150 USBTLL_SYSCONFIG_AUTOIDLE | 151 USBTLL_SYSCONFIG_SIDLEMODE | 152 USBTLL_SYSCONFIG_CLOCKACTIVITY; 153 WR4(sc, USBTLL_SYSCONFIG, val); 154 155 val = RD4(sc, USBTLL_SHARED_CONF); 156 val |= (USBTLL_SHARED_CONF_FCLK_IS_ON | (1 << 2)); 157 val &= ~USBTLL_SHARED_CONF_USB_90D_DDR_EN; 158 val &= ~USBTLL_SHARED_CONF_USB_180D_SDR_EN; 159 WR4(sc, USBTLL_SHARED_CONF, val); 160} 161 162static int 163ti_usbtll_match(device_t parent, cfdata_t match, void *aux) 164{ 165 struct fdt_attach_args * const faa = aux; 166 167 return of_compatible_match(faa->faa_phandle, compat_data); 168} 169 170static void 171ti_usbtll_attach(device_t parent, device_t self, void *aux) 172{ 173 struct ti_usbtll_softc *sc = device_private(self); 174 struct fdt_attach_args * const faa = aux; 175 const int phandle = faa->faa_phandle; 176 bus_addr_t addr; 177 bus_size_t size; 178 179 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 180 aprint_error(": couldn't get registers\n"); 181 return; 182 } 183 184 if (ti_prcm_enable_hwmod(phandle, 0) != 0) { 185 aprint_error(": couldn't enable module\n"); 186 return; 187 } 188 189 sc->sc_dev = self; 190 sc->sc_bst = faa->faa_bst; 191 if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) { 192 aprint_error(": couldn't map registers\n"); 193 return; 194 } 195 196 aprint_naive("\n"); 197 aprint_normal(": OMAP HS USB Host TLL\n"); 198 199 ti_usbtll_init(sc); 200 201 if (ti_usbtll_sc == NULL) 202 ti_usbtll_sc = sc; 203} 204