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_pio_rm9200.h>
65 #include <arm/at91/at91_piovar.h>
69 /* Pin Definitions - do they belong here or somewhere else ? */
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;
80 static device_shutdown_t at91_udp_shutdown;
82 struct at91_udp_softc {
83 struct at91dci_softc sc_dci; /* must be first */
84 struct at91_pmc_clock *sc_iclk;
85 struct at91_pmc_clock *sc_fclk;
86 struct resource *sc_vbus_irq_res;
87 void *sc_vbus_intr_hdl;
91 at91_vbus_poll(struct at91_udp_softc *sc)
96 /* XXX temporary clear interrupts here */
98 temp = at91_pio_gpio_clear_interrupt(VBUS_BASE);
100 /* just forward it */
102 vbus_val = at91_pio_gpio_get(VBUS_BASE, VBUS_MASK);
103 at91dci_vbus_interrupt(&sc->sc_dci, vbus_val);
107 at91_udp_clocks_on(void *arg)
109 struct at91_udp_softc *sc = arg;
111 at91_pmc_clock_enable(sc->sc_iclk);
112 at91_pmc_clock_enable(sc->sc_fclk);
116 at91_udp_clocks_off(void *arg)
118 struct at91_udp_softc *sc = arg;
120 at91_pmc_clock_disable(sc->sc_fclk);
121 at91_pmc_clock_disable(sc->sc_iclk);
125 at91_udp_pull_up(void *arg)
127 at91_pio_gpio_set(PULLUP_BASE, PULLUP_MASK);
131 at91_udp_pull_down(void *arg)
133 at91_pio_gpio_clear(PULLUP_BASE, PULLUP_MASK);
137 at91_udp_probe(device_t dev)
139 device_set_desc(dev, "AT91 integrated AT91_UDP controller");
144 at91_udp_attach(device_t dev)
146 struct at91_udp_softc *sc = device_get_softc(dev);
150 /* setup AT9100 USB device controller interface softc */
152 sc->sc_dci.sc_clocks_on = &at91_udp_clocks_on;
153 sc->sc_dci.sc_clocks_off = &at91_udp_clocks_off;
154 sc->sc_dci.sc_clocks_arg = sc;
155 sc->sc_dci.sc_pull_up = &at91_udp_pull_up;
156 sc->sc_dci.sc_pull_down = &at91_udp_pull_down;
157 sc->sc_dci.sc_pull_arg = sc;
159 /* initialise some bus fields */
160 sc->sc_dci.sc_bus.parent = dev;
161 sc->sc_dci.sc_bus.devices = sc->sc_dci.sc_devices;
162 sc->sc_dci.sc_bus.devices_max = AT91_MAX_DEVICES;
164 /* get all DMA memory */
165 if (usb_bus_mem_alloc_all(&sc->sc_dci.sc_bus,
166 USB_GET_DMA_TAG(dev), NULL)) {
170 * configure VBUS input pin, enable deglitch and enable
173 at91_pio_use_gpio(VBUS_BASE, VBUS_MASK);
174 at91_pio_gpio_input(VBUS_BASE, VBUS_MASK);
175 at91_pio_gpio_set_deglitch(VBUS_BASE, VBUS_MASK, 1);
176 at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 1);
179 * configure PULLUP output pin :
181 at91_pio_use_gpio(PULLUP_BASE, PULLUP_MASK);
182 at91_pio_gpio_output(PULLUP_BASE, PULLUP_MASK, 0);
184 at91_udp_pull_down(sc);
186 /* wait 10ms for pulldown to stabilise */
187 usb_pause_mtx(NULL, hz / 100);
189 sc->sc_iclk = at91_pmc_clock_ref("udc_clk");
190 sc->sc_fclk = at91_pmc_clock_ref("udpck");
193 sc->sc_dci.sc_io_res =
194 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
196 if (!(sc->sc_dci.sc_io_res)) {
200 sc->sc_dci.sc_io_tag = rman_get_bustag(sc->sc_dci.sc_io_res);
201 sc->sc_dci.sc_io_hdl = rman_get_bushandle(sc->sc_dci.sc_io_res);
202 sc->sc_dci.sc_io_size = rman_get_size(sc->sc_dci.sc_io_res);
205 sc->sc_dci.sc_irq_res =
206 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
207 if (!(sc->sc_dci.sc_irq_res)) {
211 sc->sc_vbus_irq_res =
212 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
213 if (!(sc->sc_vbus_irq_res)) {
216 sc->sc_dci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
217 if (!(sc->sc_dci.sc_bus.bdev)) {
220 device_set_ivars(sc->sc_dci.sc_bus.bdev, &sc->sc_dci.sc_bus);
222 #if (__FreeBSD_version >= 700031)
223 err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
224 NULL, (driver_intr_t *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
226 err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
227 (driver_intr_t *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
230 sc->sc_dci.sc_intr_hdl = NULL;
233 #if (__FreeBSD_version >= 700031)
234 err = bus_setup_intr(dev, sc->sc_vbus_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
235 NULL, (driver_intr_t *)at91_vbus_poll, sc, &sc->sc_vbus_intr_hdl);
237 err = bus_setup_intr(dev, sc->sc_vbus_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
238 (driver_intr_t *)at91_vbus_poll, sc, &sc->sc_vbus_intr_hdl);
241 sc->sc_vbus_intr_hdl = NULL;
244 err = at91dci_init(&sc->sc_dci);
246 err = device_probe_and_attach(sc->sc_dci.sc_bus.bdev);
251 /* poll VBUS one time */
257 at91_udp_detach(dev);
262 at91_udp_detach(device_t dev)
264 struct at91_udp_softc *sc = device_get_softc(dev);
268 if (sc->sc_dci.sc_bus.bdev) {
269 bdev = sc->sc_dci.sc_bus.bdev;
271 device_delete_child(dev, bdev);
273 /* during module unload there are lots of children leftover */
274 device_delete_all_children(dev);
276 /* disable Transceiver */
277 AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_TXVC, AT91_UDP_TXVC_DIS);
279 /* disable and clear all interrupts */
280 AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_IDR, 0xFFFFFFFF);
281 AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_ICR, 0xFFFFFFFF);
283 /* disable VBUS interrupt */
284 at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 0);
286 if (sc->sc_vbus_irq_res && sc->sc_vbus_intr_hdl) {
287 err = bus_teardown_intr(dev, sc->sc_vbus_irq_res,
288 sc->sc_vbus_intr_hdl);
289 sc->sc_vbus_intr_hdl = NULL;
291 if (sc->sc_vbus_irq_res) {
292 bus_release_resource(dev, SYS_RES_IRQ, 1,
293 sc->sc_vbus_irq_res);
294 sc->sc_vbus_irq_res = NULL;
296 if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
298 * only call at91_udp_uninit() after at91_udp_init()
300 at91dci_uninit(&sc->sc_dci);
302 err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
303 sc->sc_dci.sc_intr_hdl);
304 sc->sc_dci.sc_intr_hdl = NULL;
306 if (sc->sc_dci.sc_irq_res) {
307 bus_release_resource(dev, SYS_RES_IRQ, 0,
308 sc->sc_dci.sc_irq_res);
309 sc->sc_dci.sc_irq_res = NULL;
311 if (sc->sc_dci.sc_io_res) {
312 bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
313 sc->sc_dci.sc_io_res);
314 sc->sc_dci.sc_io_res = NULL;
316 usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);
319 at91_pmc_clock_disable(sc->sc_iclk);
320 at91_pmc_clock_disable(sc->sc_fclk);
321 at91_pmc_clock_deref(sc->sc_fclk);
322 at91_pmc_clock_deref(sc->sc_iclk);
328 at91_udp_shutdown(device_t dev)
330 struct at91_udp_softc *sc = device_get_softc(dev);
333 err = bus_generic_shutdown(dev);
337 at91dci_uninit(&sc->sc_dci);
342 static device_method_t at91_udp_methods[] = {
343 /* Device interface */
344 DEVMETHOD(device_probe, at91_udp_probe),
345 DEVMETHOD(device_attach, at91_udp_attach),
346 DEVMETHOD(device_detach, at91_udp_detach),
347 DEVMETHOD(device_shutdown, at91_udp_shutdown),
350 DEVMETHOD(bus_print_child, bus_generic_print_child),
355 static driver_t at91_udp_driver = {
358 sizeof(struct at91_udp_softc),
361 static devclass_t at91_udp_devclass;
363 DRIVER_MODULE(at91_udp, atmelarm, at91_udp_driver, at91_udp_devclass, 0, 0);