/* $NetBSD: ti_motg.c,v 1.1.2.3 2020/06/07 16:37:53 martin Exp $ */ /* * Copyright (c) 2013 Manuel Bouyer. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ti_motg.c,v 1.1.2.3 2020/06/07 16:37:53 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef USB_DEBUG #ifndef MOTG_DEBUG #define motgdebug 0 #else extern int motgdebug; #endif /* MOTG_DEBUG */ #endif /* USB_DEBUG */ #define DPRINTF(FMT,A,B,C,D) USBHIST_LOGN(motgdebug,1,FMT,A,B,C,D) #define MOTGHIST_FUNC() USBHIST_FUNC() #define MOTGHIST_CALLED(name) USBHIST_CALLED(motgdebug) static const char * compatible [] = { "ti,musb-am33xx", NULL }; /* * motg device attachement and driver, * for the per-port part of the controller: TI-specific part, phy and * MI Mentor OTG. */ struct ti_motg_softc { struct motg_softc sc_motg; bus_space_tag_t sc_ctrliot; bus_space_handle_t sc_ctrlioh; void * sc_ctrlih; int sc_ctrlport; }; static int ti_motg_match(device_t, cfdata_t, void *); static void ti_motg_attach(device_t, device_t, void *); static int ti_motg_intr(void *); static void ti_motg_poll(void *); CFATTACH_DECL_NEW(ti_motg, sizeof(struct ti_motg_softc), ti_motg_match, ti_motg_attach, NULL, NULL); static int ti_motg_match(device_t parent, cfdata_t match, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void ti_motg_attach(device_t parent, device_t self, void *aux) { struct ti_motg_softc *sc = device_private(self); struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; char intrstr[128]; bus_addr_t addr[2]; bus_size_t size[2]; uint32_t val; MOTGHIST_FUNC(); MOTGHIST_CALLED(); if (fdtbus_get_reg_byname(phandle, "mc", &addr[0], &size[0]) != 0 || fdtbus_get_reg_byname(phandle, "control", &addr[1], &size[1])) { aprint_error(": couldn't get registers\n"); return; } if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { aprint_error(": couldn't decode interrupt\n"); return; } sc->sc_motg.sc_dev = self; sc->sc_ctrliot = faa->faa_bst; if (bus_space_map(sc->sc_ctrliot, addr[1], size[1], 0, &sc->sc_ctrlioh) != 0) { aprint_error(": couldn't map registers\n"); return; } sc->sc_ctrlih = fdtbus_intr_establish(phandle, 0, IPL_USB, 0, ti_motg_intr, sc); sc->sc_motg.sc_bus.ub_dmatag = faa->faa_dmat; val = TIOTG_USBC_READ4(sc, USBCTRL_REV); aprint_normal(": 0x%x version v%d.%d.%d", val, (val >> 8) & 7, (val >> 6) & 3, val & 63); /* XXX configure mode */ #if 0 if (sc->sc_ctrlport == 0) sc->sc_motg.sc_mode = MOTG_MODE_DEVICE; else sc->sc_motg.sc_mode = MOTG_MODE_HOST; #else /* XXXXX * Both ports always the host mode only. * And motg(4) doesn't supports device and OTG modes. */ sc->sc_motg.sc_mode = MOTG_MODE_HOST; #endif if (sc->sc_motg.sc_mode == MOTG_MODE_HOST) { val = TIOTG_USBC_READ4(sc, USBCTRL_MODE); val |= USBCTRL_MODE_IDDIGMUX; val &= ~USBCTRL_MODE_IDDIG; TIOTG_USBC_WRITE4(sc, USBCTRL_MODE, val); TIOTG_USBC_WRITE4(sc, USBCTRL_UTMI, USBCTRL_UTMI_FSDATAEXT); } else { val = TIOTG_USBC_READ4(sc, USBCTRL_MODE); val |= USBCTRL_MODE_IDDIGMUX; val |= USBCTRL_MODE_IDDIG; TIOTG_USBC_WRITE4(sc, USBCTRL_MODE, val); } aprint_normal("\n"); aprint_naive("\n"); aprint_normal_dev(self, "interrupting on %s\n", intrstr); sc->sc_motg.sc_iot = faa->faa_bst; if (bus_space_map(sc->sc_motg.sc_iot, addr[0], size[0], 0, &sc->sc_motg.sc_ioh) != 0) { aprint_error_dev(self, "couldn't map mc registers\n"); return; } sc->sc_motg.sc_size = size[0]; sc->sc_motg.sc_intr_poll = ti_motg_poll; sc->sc_motg.sc_intr_poll_arg = sc; delay(10); motg_init(&sc->sc_motg); /* enable interrupts */ TIOTG_USBC_WRITE4(sc, USBCTRL_INTEN_SET0, 0xffffffff); TIOTG_USBC_WRITE4(sc, USBCTRL_INTEN_SET1, USBCTRL_INTEN_USB_ALL & ~USBCTRL_INTEN_USB_SOF); } static int ti_motg_intr(void *v) { struct ti_motg_softc *sc = v; uint32_t stat, stat0, stat1; int rv; MOTGHIST_FUNC(); MOTGHIST_CALLED(); mutex_spin_enter(&sc->sc_motg.sc_intr_lock); stat = TIOTG_USBC_READ4(sc, USBCTRL_STAT); stat0 = TIOTG_USBC_READ4(sc, USBCTRL_IRQ_STAT0); stat1 = TIOTG_USBC_READ4(sc, USBCTRL_IRQ_STAT1); DPRINTF("USB %jd 0x%jx 0x%jx stat %jd", sc->sc_ctrlport, stat0, stat1, stat); if (stat0) { TIOTG_USBC_WRITE4(sc, USBCTRL_IRQ_STAT0, stat0); } if (stat1) { TIOTG_USBC_WRITE4(sc, USBCTRL_IRQ_STAT1, stat1); } if (stat1 & USBCTRL_IRQ_STAT1_DRVVBUS) { motg_intr_vbus(&sc->sc_motg, stat & 0x1); } rv = motg_intr(&sc->sc_motg, ((stat0 >> 16) & 0xffff), stat0 & 0xffff, stat1 & 0xff); mutex_spin_exit(&sc->sc_motg.sc_intr_lock); return rv; } static void ti_motg_poll(void *v) { ti_motg_intr(v); }