5 * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/stdint.h>
30 #include <sys/stddef.h>
31 #include <sys/param.h>
32 #include <sys/queue.h>
33 #include <sys/types.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
37 #include <sys/module.h>
39 #include <sys/mutex.h>
40 #include <sys/condvar.h>
41 #include <sys/sysctl.h>
43 #include <sys/unistd.h>
44 #include <sys/callout.h>
45 #include <sys/malloc.h>
48 #include <dev/usb/usb.h>
49 #include <dev/usb/usbdi.h>
51 #include <dev/usb/usb_core.h>
52 #include <dev/usb/usb_busdma.h>
53 #include <dev/usb/usb_process.h>
54 #include <dev/usb/usb_util.h>
56 #include <dev/usb/usb_controller.h>
57 #include <dev/usb/usb_bus.h>
58 #include <dev/usb/controller/at91dci.h>
62 #include <arm/at91/at91_pmcvar.h>
63 #include <arm/at91/at91rm92reg.h>
64 #include <arm/at91/at91_pioreg.h>
65 #include <arm/at91/at91_piovar.h>
69 /* Pin Definitions - do they belong here or somewhere else ? -- YES! */
71 #define VBUS_MASK AT91C_PIO_PB24
72 #define VBUS_BASE AT91RM92_PIOB_BASE
74 #define PULLUP_MASK AT91C_PIO_PB22
75 #define PULLUP_BASE AT91RM92_PIOB_BASE
77 static device_probe_t at91_udp_probe;
78 static device_attach_t at91_udp_attach;
79 static device_detach_t at91_udp_detach;
81 struct at91_udp_softc {
82 struct at91dci_softc sc_dci; /* must be first */
83 struct at91_pmc_clock *sc_mclk;
84 struct at91_pmc_clock *sc_iclk;
85 struct at91_pmc_clock *sc_fclk;
86 struct callout sc_vbus;
90 at91_vbus_poll(struct at91_udp_softc *sc)
94 vbus_val = at91_pio_gpio_get(VBUS_BASE, VBUS_MASK) != 0;
95 at91dci_vbus_interrupt(&sc->sc_dci, vbus_val);
97 callout_reset(&sc->sc_vbus, hz, (void *)&at91_vbus_poll, sc);
101 at91_udp_clocks_on(void *arg)
103 struct at91_udp_softc *sc = arg;
105 at91_pmc_clock_enable(sc->sc_mclk);
106 at91_pmc_clock_enable(sc->sc_iclk);
107 at91_pmc_clock_enable(sc->sc_fclk);
111 at91_udp_clocks_off(void *arg)
113 struct at91_udp_softc *sc = arg;
115 at91_pmc_clock_disable(sc->sc_fclk);
116 at91_pmc_clock_disable(sc->sc_iclk);
117 at91_pmc_clock_disable(sc->sc_mclk);
121 at91_udp_pull_up(void *arg)
123 at91_pio_gpio_set(PULLUP_BASE, PULLUP_MASK);
127 at91_udp_pull_down(void *arg)
129 at91_pio_gpio_clear(PULLUP_BASE, PULLUP_MASK);
133 at91_udp_probe(device_t dev)
135 device_set_desc(dev, "AT91 integrated AT91_UDP controller");
140 at91_udp_attach(device_t dev)
142 struct at91_udp_softc *sc = device_get_softc(dev);
146 /* setup AT9100 USB device controller interface softc */
148 sc->sc_dci.sc_clocks_on = &at91_udp_clocks_on;
149 sc->sc_dci.sc_clocks_off = &at91_udp_clocks_off;
150 sc->sc_dci.sc_clocks_arg = sc;
151 sc->sc_dci.sc_pull_up = &at91_udp_pull_up;
152 sc->sc_dci.sc_pull_down = &at91_udp_pull_down;
153 sc->sc_dci.sc_pull_arg = sc;
155 /* initialise some bus fields */
156 sc->sc_dci.sc_bus.parent = dev;
157 sc->sc_dci.sc_bus.devices = sc->sc_dci.sc_devices;
158 sc->sc_dci.sc_bus.devices_max = AT91_MAX_DEVICES;
160 /* get all DMA memory */
161 if (usb_bus_mem_alloc_all(&sc->sc_dci.sc_bus,
162 USB_GET_DMA_TAG(dev), NULL)) {
165 callout_init_mtx(&sc->sc_vbus, &sc->sc_dci.sc_bus.bus_mtx, 0);
168 * configure VBUS input pin, enable deglitch and enable
171 at91_pio_use_gpio(VBUS_BASE, VBUS_MASK);
172 at91_pio_gpio_input(VBUS_BASE, VBUS_MASK);
173 at91_pio_gpio_set_deglitch(VBUS_BASE, VBUS_MASK, 1);
174 at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 0);
177 * configure PULLUP output pin :
179 at91_pio_use_gpio(PULLUP_BASE, PULLUP_MASK);
180 at91_pio_gpio_output(PULLUP_BASE, PULLUP_MASK, 0);
182 at91_udp_pull_down(sc);
184 /* wait 10ms for pulldown to stabilise */
185 usb_pause_mtx(NULL, hz / 100);
187 sc->sc_mclk = at91_pmc_clock_ref("mck");
188 sc->sc_iclk = at91_pmc_clock_ref("udc_clk");
189 sc->sc_fclk = at91_pmc_clock_ref("udpck");
192 sc->sc_dci.sc_io_res =
193 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
195 if (!(sc->sc_dci.sc_io_res)) {
199 sc->sc_dci.sc_io_tag = rman_get_bustag(sc->sc_dci.sc_io_res);
200 sc->sc_dci.sc_io_hdl = rman_get_bushandle(sc->sc_dci.sc_io_res);
201 sc->sc_dci.sc_io_size = rman_get_size(sc->sc_dci.sc_io_res);
204 sc->sc_dci.sc_irq_res =
205 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
206 if (!(sc->sc_dci.sc_irq_res)) {
209 sc->sc_dci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
210 if (!(sc->sc_dci.sc_bus.bdev)) {
213 device_set_ivars(sc->sc_dci.sc_bus.bdev, &sc->sc_dci.sc_bus);
215 #if (__FreeBSD_version >= 700031)
216 err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
217 NULL, (driver_intr_t *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
219 err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
220 (driver_intr_t *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
223 sc->sc_dci.sc_intr_hdl = NULL;
227 err = at91dci_init(&sc->sc_dci);
229 err = device_probe_and_attach(sc->sc_dci.sc_bus.bdev);
234 /* poll VBUS one time */
235 USB_BUS_LOCK(&sc->sc_dci.sc_bus);
237 USB_BUS_UNLOCK(&sc->sc_dci.sc_bus);
242 at91_udp_detach(dev);
247 at91_udp_detach(device_t dev)
249 struct at91_udp_softc *sc = device_get_softc(dev);
253 if (sc->sc_dci.sc_bus.bdev) {
254 bdev = sc->sc_dci.sc_bus.bdev;
256 device_delete_child(dev, bdev);
258 /* during module unload there are lots of children leftover */
259 device_delete_children(dev);
261 USB_BUS_LOCK(&sc->sc_dci.sc_bus);
262 callout_stop(&sc->sc_vbus);
263 USB_BUS_UNLOCK(&sc->sc_dci.sc_bus);
265 callout_drain(&sc->sc_vbus);
267 /* disable Transceiver */
268 AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_TXVC, AT91_UDP_TXVC_DIS);
270 /* disable and clear all interrupts */
271 AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_IDR, 0xFFFFFFFF);
272 AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_ICR, 0xFFFFFFFF);
274 if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
276 * only call at91_udp_uninit() after at91_udp_init()
278 at91dci_uninit(&sc->sc_dci);
280 err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
281 sc->sc_dci.sc_intr_hdl);
282 sc->sc_dci.sc_intr_hdl = NULL;
284 if (sc->sc_dci.sc_irq_res) {
285 bus_release_resource(dev, SYS_RES_IRQ, 0,
286 sc->sc_dci.sc_irq_res);
287 sc->sc_dci.sc_irq_res = NULL;
289 if (sc->sc_dci.sc_io_res) {
290 bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
291 sc->sc_dci.sc_io_res);
292 sc->sc_dci.sc_io_res = NULL;
294 usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);
297 at91_pmc_clock_disable(sc->sc_iclk);
298 at91_pmc_clock_disable(sc->sc_fclk);
299 at91_pmc_clock_disable(sc->sc_mclk);
300 at91_pmc_clock_deref(sc->sc_fclk);
301 at91_pmc_clock_deref(sc->sc_iclk);
302 at91_pmc_clock_deref(sc->sc_mclk);
307 static device_method_t at91_udp_methods[] = {
308 /* Device interface */
309 DEVMETHOD(device_probe, at91_udp_probe),
310 DEVMETHOD(device_attach, at91_udp_attach),
311 DEVMETHOD(device_detach, at91_udp_detach),
312 DEVMETHOD(device_suspend, bus_generic_suspend),
313 DEVMETHOD(device_resume, bus_generic_resume),
314 DEVMETHOD(device_shutdown, bus_generic_shutdown),
319 static driver_t at91_udp_driver = {
321 .methods = at91_udp_methods,
322 .size = sizeof(struct at91_udp_softc),
325 static devclass_t at91_udp_devclass;
327 DRIVER_MODULE(at91_udp, atmelarm, at91_udp_driver, at91_udp_devclass, 0, 0);