Add device and gadget bindings for fdt. These are preliminary and will

need work before they work, especially the gadget bindings.

1 files changed, 333 insertions, 0 deletions

diff --git a/sys/dev/usb/controller/at91dci_fdt.c b/sys/dev/usb/controller/at91dci_fdt.c
new file mode 100644
index 0000000..e1c5dd8
--- /dev/null
+++ b/sys/dev/usb/controller/at91dci_fdt.c
@@ -0,0 +1,333 @@
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*-
+ * Copyright (c) 2007-2008 Hans Petter Selasky. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/stdint.h>
+#include <sys/stddef.h>
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <sys/sysctl.h>
+#include <sys/sx.h>
+#include <sys/unistd.h>
+#include <sys/callout.h>
+#include <sys/malloc.h>
+#include <sys/priv.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+
+#include <dev/usb/usb_core.h>
+#include <dev/usb/usb_busdma.h>
+#include <dev/usb/usb_process.h>
+#include <dev/usb/usb_util.h>
+
+#include <dev/usb/usb_controller.h>
+#include <dev/usb/usb_bus.h>
+#include <dev/usb/controller/at91dci.h>
+
+#include <sys/rman.h>
+
+#include <arm/at91/at91_pmcvar.h>
+#include <arm/at91/at91rm92reg.h>
+#include <arm/at91/at91_pioreg.h>
+#include <arm/at91/at91_piovar.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#define	MEM_RID	0
+
+/* Pin Definitions - do they belong here or somewhere else ? -- YES! */
+
+#define	VBUS_MASK	AT91C_PIO_PB24
+#define	VBUS_BASE	AT91RM92_PIOB_BASE
+
+#define	PULLUP_MASK	AT91C_PIO_PB22
+#define	PULLUP_BASE	AT91RM92_PIOB_BASE
+
+static device_probe_t at91_udp_probe;
+static device_attach_t at91_udp_attach;
+static device_detach_t at91_udp_detach;
+
+struct at91_udp_softc {
+	struct at91dci_softc sc_dci;	/* must be first */
+	struct at91_pmc_clock *sc_mclk;
+	struct at91_pmc_clock *sc_iclk;
+	struct at91_pmc_clock *sc_fclk;
+	struct callout sc_vbus;
+};
+
+static void
+at91_vbus_poll(struct at91_udp_softc *sc)
+{
+	uint8_t vbus_val;
+
+	vbus_val = at91_pio_gpio_get(VBUS_BASE, VBUS_MASK) != 0;
+	at91dci_vbus_interrupt(&sc->sc_dci, vbus_val);
+
+	callout_reset(&sc->sc_vbus, hz, (void *)&at91_vbus_poll, sc);
+}
+
+static void
+at91_udp_clocks_on(void *arg)
+{
+	struct at91_udp_softc *sc = arg;
+
+	at91_pmc_clock_enable(sc->sc_mclk);
+	at91_pmc_clock_enable(sc->sc_iclk);
+	at91_pmc_clock_enable(sc->sc_fclk);
+}
+
+static void
+at91_udp_clocks_off(void *arg)
+{
+	struct at91_udp_softc *sc = arg;
+
+	at91_pmc_clock_disable(sc->sc_fclk);
+	at91_pmc_clock_disable(sc->sc_iclk);
+	at91_pmc_clock_disable(sc->sc_mclk);
+}
+
+static void
+at91_udp_pull_up(void *arg)
+{
+	at91_pio_gpio_set(PULLUP_BASE, PULLUP_MASK);
+}
+
+static void
+at91_udp_pull_down(void *arg)
+{
+	at91_pio_gpio_clear(PULLUP_BASE, PULLUP_MASK);
+}
+
+static int
+at91_udp_probe(device_t dev)
+{
+	if (!ofw_bus_is_compatible(dev, "atmel,at91rm9200-udc"))
+		return (ENXIO);
+	device_set_desc(dev, "AT91 integrated AT91_UDP controller");
+	return (0);
+}
+
+static int
+at91_udp_attach(device_t dev)
+{
+	struct at91_udp_softc *sc = device_get_softc(dev);
+	int err;
+	int rid;
+
+	/* setup AT9100 USB device controller interface softc */
+
+	sc->sc_dci.sc_clocks_on = &at91_udp_clocks_on;
+	sc->sc_dci.sc_clocks_off = &at91_udp_clocks_off;
+	sc->sc_dci.sc_clocks_arg = sc;
+	sc->sc_dci.sc_pull_up = &at91_udp_pull_up;
+	sc->sc_dci.sc_pull_down = &at91_udp_pull_down;
+	sc->sc_dci.sc_pull_arg = sc;
+
+	/* initialise some bus fields */
+	sc->sc_dci.sc_bus.parent = dev;
+	sc->sc_dci.sc_bus.devices = sc->sc_dci.sc_devices;
+	sc->sc_dci.sc_bus.devices_max = AT91_MAX_DEVICES;
+
+	/* get all DMA memory */
+	if (usb_bus_mem_alloc_all(&sc->sc_dci.sc_bus,
+	    USB_GET_DMA_TAG(dev), NULL)) {
+		return (ENOMEM);
+	}
+	callout_init_mtx(&sc->sc_vbus, &sc->sc_dci.sc_bus.bus_mtx, 0);
+
+	/*
+	 * configure VBUS input pin, enable deglitch and enable
+	 * interrupt :
+	 */
+	at91_pio_use_gpio(VBUS_BASE, VBUS_MASK);
+	at91_pio_gpio_input(VBUS_BASE, VBUS_MASK);
+	at91_pio_gpio_set_deglitch(VBUS_BASE, VBUS_MASK, 1);
+	at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 0);
+
+	/*
+	 * configure PULLUP output pin :
+	 */
+	at91_pio_use_gpio(PULLUP_BASE, PULLUP_MASK);
+	at91_pio_gpio_output(PULLUP_BASE, PULLUP_MASK, 0);
+
+	at91_udp_pull_down(sc);
+
+	/* wait 10ms for pulldown to stabilise */
+	usb_pause_mtx(NULL, hz / 100);
+
+	sc->sc_mclk = at91_pmc_clock_ref("mck");
+	sc->sc_iclk = at91_pmc_clock_ref("udc_clk");
+	sc->sc_fclk = at91_pmc_clock_ref("udpck");
+
+	rid = MEM_RID;
+	sc->sc_dci.sc_io_res =
+	    bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+
+	if (!(sc->sc_dci.sc_io_res)) {
+		err = ENOMEM;
+		goto error;
+	}
+	sc->sc_dci.sc_io_tag = rman_get_bustag(sc->sc_dci.sc_io_res);
+	sc->sc_dci.sc_io_hdl = rman_get_bushandle(sc->sc_dci.sc_io_res);
+	sc->sc_dci.sc_io_size = rman_get_size(sc->sc_dci.sc_io_res);
+
+	rid = 0;
+	sc->sc_dci.sc_irq_res =
+	    bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
+	if (!(sc->sc_dci.sc_irq_res)) {
+		goto error;
+	}
+	sc->sc_dci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
+	if (!(sc->sc_dci.sc_bus.bdev)) {
+		goto error;
+	}
+	device_set_ivars(sc->sc_dci.sc_bus.bdev, &sc->sc_dci.sc_bus);
+
+#if (__FreeBSD_version >= 700031)
+	err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
+	    NULL, (driver_intr_t *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
+#else
+	err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
+	    (driver_intr_t *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
+#endif
+	if (err) {
+		sc->sc_dci.sc_intr_hdl = NULL;
+		goto error;
+	}
+
+	err = at91dci_init(&sc->sc_dci);
+	if (!err) {
+		err = device_probe_and_attach(sc->sc_dci.sc_bus.bdev);
+	}
+	if (err) {
+		goto error;
+	} else {
+		/* poll VBUS one time */
+		USB_BUS_LOCK(&sc->sc_dci.sc_bus);
+		at91_vbus_poll(sc);
+		USB_BUS_UNLOCK(&sc->sc_dci.sc_bus);
+	}
+	return (0);
+
+error:
+	at91_udp_detach(dev);
+	return (ENXIO);
+}
+
+static int
+at91_udp_detach(device_t dev)
+{
+	struct at91_udp_softc *sc = device_get_softc(dev);
+	device_t bdev;
+	int err;
+
+	if (sc->sc_dci.sc_bus.bdev) {
+		bdev = sc->sc_dci.sc_bus.bdev;
+		device_detach(bdev);
+		device_delete_child(dev, bdev);
+	}
+	/* during module unload there are lots of children leftover */
+	device_delete_children(dev);
+
+	USB_BUS_LOCK(&sc->sc_dci.sc_bus);
+	callout_stop(&sc->sc_vbus);
+	USB_BUS_UNLOCK(&sc->sc_dci.sc_bus);
+
+	callout_drain(&sc->sc_vbus);
+
+	/* disable Transceiver */
+	AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_TXVC, AT91_UDP_TXVC_DIS);
+
+	/* disable and clear all interrupts */
+	AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_IDR, 0xFFFFFFFF);
+	AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_ICR, 0xFFFFFFFF);
+
+	if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
+		/*
+		 * only call at91_udp_uninit() after at91_udp_init()
+		 */
+		at91dci_uninit(&sc->sc_dci);
+
+		err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
+		    sc->sc_dci.sc_intr_hdl);
+		sc->sc_dci.sc_intr_hdl = NULL;
+	}
+	if (sc->sc_dci.sc_irq_res) {
+		bus_release_resource(dev, SYS_RES_IRQ, 0,
+		    sc->sc_dci.sc_irq_res);
+		sc->sc_dci.sc_irq_res = NULL;
+	}
+	if (sc->sc_dci.sc_io_res) {
+		bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
+		    sc->sc_dci.sc_io_res);
+		sc->sc_dci.sc_io_res = NULL;
+	}
+	usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);
+
+	/* disable clocks */
+	at91_pmc_clock_disable(sc->sc_iclk);
+	at91_pmc_clock_disable(sc->sc_fclk);
+	at91_pmc_clock_disable(sc->sc_mclk);
+	at91_pmc_clock_deref(sc->sc_fclk);
+	at91_pmc_clock_deref(sc->sc_iclk);
+	at91_pmc_clock_deref(sc->sc_mclk);
+
+	return (0);
+}
+
+static device_method_t at91_udp_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, at91_udp_probe),
+	DEVMETHOD(device_attach, at91_udp_attach),
+	DEVMETHOD(device_detach, at91_udp_detach),
+	DEVMETHOD(device_suspend, bus_generic_suspend),
+	DEVMETHOD(device_resume, bus_generic_resume),
+	DEVMETHOD(device_shutdown, bus_generic_shutdown),
+
+	DEVMETHOD_END
+};
+
+static driver_t at91_udp_driver = {
+	.name = "at91_udp",
+	.methods = at91_udp_methods,
+	.size = sizeof(struct at91_udp_softc),
+};
+
+static devclass_t at91_udp_devclass;
+
+DRIVER_MODULE(at91_udp, simplebus, at91_udp_driver, at91_udp_devclass, 0, 0);