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[src/trunk]: src/sys/arch/arm/omap Add the bus front end for the Mentor Graph...
details: https://anonhg.NetBSD.org/src/rev/ca13c0652297
branches: trunk
changeset: 330628:ca13c0652297
user: bouyer <bouyer%NetBSD.org@localhost>
date: Wed Jul 16 18:27:19 2014 +0000
description:
Add the bus front end for the Mentor Graphics USB OTG controllers found
in the TI am355x SoCs.
diffstat:
sys/arch/arm/omap/tiotg.c | 421 +++++++++++++++++++++++++++++++++++++++++++
sys/arch/arm/omap/tiotgreg.h | 74 +++++++
2 files changed, 495 insertions(+), 0 deletions(-)
diffs (truncated from 503 to 300 lines):
diff -r 1b20e33993f4 -r ca13c0652297 sys/arch/arm/omap/tiotg.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/omap/tiotg.c Wed Jul 16 18:27:19 2014 +0000
@@ -0,0 +1,421 @@
+/* $NetBSD: tiotg.c,v 1.1 2014/07/16 18:27:19 bouyer 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 <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: tiotg.c,v 1.1 2014/07/16 18:27:19 bouyer Exp $");
+
+#include "opt_omap.h"
+#include "locators.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/conf.h>
+#include <sys/bus.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <arm/omap/omap2_obiovar.h>
+
+#include <arm/omap/omap2_reg.h>
+#include <arm/omap/tiotgreg.h>
+
+#ifdef TI_AM335X
+# include <arm/omap/am335x_prcm.h>
+# include <arm/omap/omap2_prcm.h>
+# include <arm/omap/sitara_cm.h>
+# include <arm/omap/sitara_cmreg.h>
+#endif
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdivar.h>
+#include <dev/usb/usb_mem.h>
+#include <dev/usb/motgvar.h>
+
+#define MOTG_DEBUG
+#ifdef MOTG_DEBUG
+extern int motgdebug;
+#define DPRINTF(x) if (motgdebug) printf x
+#else
+#define DPRINTF(x)
+#endif
+
+struct tiotg_softc {
+ device_t sc_dev;
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+ bus_dma_tag_t sc_dmat;
+ int sc_intrbase;
+ void * sc_ih;
+ device_t sc_motgdev[TI_OTG_NPORTS];
+};
+
+static int tiotg_match(device_t, cfdata_t, void *);
+static void tiotg_attach(device_t, device_t, void *);
+static int tiotg_rescan(device_t, const char *, const int *);
+static void tiotg_childdet(device_t, device_t);
+
+static int tiotg_intr(void *);
+
+CFATTACH_DECL2_NEW(tiotg, sizeof(struct tiotg_softc),
+ tiotg_match, tiotg_attach, NULL, NULL,
+ tiotg_rescan, tiotg_childdet);
+
+/*
+ * motg device attachement and driver,
+ * for the per-port part of the controller: TI-specific part, phy and
+ * MI Mentor OTG.
+ */
+
+struct motg_attach_args {
+ int aa_port;
+ int aa_intr;
+ bus_space_tag_t aa_iot;
+ bus_space_handle_t aa_ioh;
+ bus_dma_tag_t aa_dmat;
+};
+
+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_rescan(device_t, const char *, const int *);
+static void ti_motg_childdet(device_t, device_t);
+static int ti_motg_print(void *, const char *);
+static int ti_motg_intr(void *);
+static void ti_motg_poll(void *);
+
+CFATTACH_DECL2_NEW(motg, sizeof(struct ti_motg_softc),
+ ti_motg_match, ti_motg_attach, NULL, NULL,
+ ti_motg_rescan, ti_motg_childdet);
+
+static int
+tiotg_match(device_t parent, cfdata_t match, void *aux)
+{
+ struct obio_attach_args *obio = aux;
+
+ if ((obio->obio_addr == -1) || (obio->obio_size == 0) ||
+ (obio->obio_intrbase == -1))
+ return 0;
+ return 1;
+}
+
+static void
+tiotg_attach(device_t parent, device_t self, void *aux)
+{
+ struct tiotg_softc *sc = device_private(self);
+ struct obio_attach_args *obio = aux;
+ uint32_t val;
+
+ sc->sc_iot = obio->obio_iot;
+ sc->sc_dmat = obio->obio_dmat;
+ sc->sc_dev = self;
+
+ if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size, 0,
+ &sc->sc_ioh)) {
+ aprint_error(": couldn't map register space\n");
+ return;
+ }
+
+ sc->sc_intrbase = obio->obio_intrbase;
+ sc->sc_ih = intr_establish(obio->obio_intrbase, IPL_USB, IST_LEVEL,
+ tiotg_intr, sc);
+ KASSERT(sc->sc_ih != NULL);
+ aprint_normal(": TI dual-port USB controller");
+ /* XXX this looks wrong */
+ prcm_write_4(AM335X_PRCM_CM_WKUP, CM_WKUP_CM_CLKDCOLDO_DPLL_PER,
+ CM_WKUP_CM_CLKDCOLDO_DPLL_PER_CLKDCOLDO_GATE_CTRL|
+ CM_WKUP_CM_CLKDCOLDO_DPLL_PER_CLKDCOLDO_ST);
+
+ prcm_write_4(AM335X_PRCM_CM_PER, CM_PER_USB0_CLKCTRL, 2);
+ while ((prcm_read_4(AM335X_PRCM_CM_PER, CM_PER_USB0_CLKCTRL) & 0x3) != 2)
+ delay(10);
+
+ while (prcm_read_4(AM335X_PRCM_CM_PER, CM_PER_USB0_CLKCTRL) & (3<<16))
+ delay(10);
+
+ /* reset module */
+ TIOTG_USBSS_WRITE4(sc, USBSS_SYSCONFIG, USBSS_SYSCONFIG_SRESET);
+ while (TIOTG_USBSS_READ4(sc, USBSS_SYSCONFIG) & USBSS_SYSCONFIG_SRESET)
+ delay(10);
+ val = TIOTG_USBSS_READ4(sc, USBSS_REVREG);
+ aprint_normal(": version v%d.%d.%d.%d",
+ (val >> 11) & 15, (val >> 8) & 7, (val >> 6) & 3, val & 63);
+ aprint_normal("\n");
+
+ /* enable clock */
+
+ tiotg_rescan(self, NULL, NULL);
+
+}
+
+static int
+tiotg_rescan(device_t self, const char *ifattr, const int *locs)
+{
+ struct tiotg_softc *sc = device_private(self);
+ struct motg_attach_args aa;
+ int i;
+
+ for (i = 0; i < TI_OTG_NPORTS; i++) {
+ if (sc->sc_motgdev[i] != NULL)
+ continue;
+ if (!ifattr_match(ifattr, "tiotg_port"))
+ continue;
+ if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
+ USB_CTRL_OFFSET(i), USB_PORT_SIZE, &aa.aa_ioh) < 0) {
+ aprint_error_dev(self,
+ "can't subregion for port %d\n", i);
+ continue;
+ }
+ aa.aa_iot = sc->sc_iot;
+ aa.aa_dmat = sc->sc_dmat;
+ aa.aa_port = i;
+ aa.aa_intr = sc->sc_intrbase + 1 + i;
+ sc->sc_motgdev[i] =
+ config_found_ia(self, "tiotg_port", &aa, ti_motg_print);
+ }
+ return 0;
+}
+
+static void
+tiotg_childdet(device_t self, device_t child)
+{
+ struct tiotg_softc *sc = device_private(self);
+ int i;
+
+ for (i = 0; TI_OTG_NPORTS; i++) {
+ if (child == sc->sc_motgdev[i]) {
+ sc->sc_motgdev[i] = NULL;
+ break;
+ }
+ }
+}
+
+static int
+tiotg_intr(void * v)
+{
+ panic("tiotg_intr");
+}
+
+#ifdef TI_AM335X
+struct tiotg_padconf {
+ const char *padname;
+ const char *padmode;
+};
+const struct tiotg_padconf tiotg_padconf_usb0[] = {
+ {"USB0_DM", "USB0_DM"},
+ {"USB0_DP", "USB0_DP"},
+ {"USB0_CE", "USB0_CE"},
+ {"USB0_ID", "USB0_ID"},
+ {"USB0_VBUS", "USB0_VBUS"},
+ {"USB0_DRVVBUS", "USB0_DRVVBUS"},
+ {NULL, NULL},
+};
+const struct tiotg_padconf tiotg_padconf_usb1[] = {
+ {"USB1_DM", "USB1_DM"},
+ {"USB1_DP", "USB1_DP"},
+ {"USB1_CE", "USB1_CE"},
+ {"USB1_ID", "USB1_ID"},
+ {"USB1_VBUS", "USB1_VBUS"},
+ {"USB1_DRVVBUS", "USB1_DRVVBUS"},
+ {NULL, NULL},
+};
+struct tiotg_port_control {
+ uint32_t scm_reg;
+ const struct tiotg_padconf *padconf;
+};
+const struct tiotg_port_control tiotg_port_control[TI_OTG_NPORTS] = {
+ {
+ .scm_reg = OMAP2SCM_USB_CTL0,
+ .padconf = tiotg_padconf_usb0,
+ },
+ {
+ .scm_reg = OMAP2SCM_USB_CTL1,
+ .padconf = tiotg_padconf_usb1,
+ },
+};
+#endif
+
+static int
+ti_motg_match(device_t parent, cfdata_t match, void *aux)
+{
+ return 1;
+}
+
+static void
+ti_motg_attach(device_t parent, device_t self, void *aux)
+{
+ struct ti_motg_softc *sc = device_private(self);
+ struct motg_attach_args *aa = aux;
+ uint32_t val;
+#ifdef TI_AM335X
+ int i;
+ const char *mode;
+ u_int state;
+#endif
+
+ sc->sc_motg.sc_dev = self;
+ sc->sc_ctrliot = aa->aa_iot;
+ sc->sc_ctrlioh = aa->aa_ioh;
+ sc->sc_ctrlih = intr_establish(aa->aa_intr, IPL_USB, IST_LEVEL,
+ ti_motg_intr, sc);
+ sc->sc_ctrlport = aa->aa_port;
+ sc->sc_motg.sc_bus.dmatag = aa->aa_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);
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