1 /*-
2 * Copyright (c) 2010-2011, Aleksandr Rybalko <ray@ddteam.net>
3 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
4 * Copyright (c) 2009, Luiz Otavio O Souza.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * GPIO driver for RT305X SoC.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD: stable/10/sys/mips/rt305x/rt305x_gpio.c 278786 2015-02-14 21:16:19Z loos $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/bus.h>
40
41 #include <sys/kernel.h>
42 #include <sys/module.h>
43 #include <sys/rman.h>
44 #include <sys/lock.h>
45 #include <sys/mutex.h>
46 #include <sys/gpio.h>
47
48 #include <machine/bus.h>
49 #include <machine/resource.h>
50 #include <mips/rt305x/rt305xreg.h>
51 #include <mips/rt305x/rt305x_gpio.h>
52 #include <mips/rt305x/rt305x_gpiovar.h>
53 #include <mips/rt305x/rt305x_sysctlvar.h>
54
55 #include "gpio_if.h"
56
57 #ifdef notyet
58 #define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_PIN_INVIN | \
59 GPIO_PIN_INVOUT | GPIO_PIN_REPORT )
60 #else
61 #define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_PIN_INVIN | \
62 GPIO_PIN_INVOUT )
63 #endif
64
65 /*
66 * Helpers
67 */
68 static void rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc,
69 struct gpio_pin *pin, uint32_t flags);
70
71 /*
72 * Driver stuff
73 */
74 static int rt305x_gpio_probe(device_t dev);
75 static int rt305x_gpio_attach(device_t dev);
76 static int rt305x_gpio_detach(device_t dev);
77 static int rt305x_gpio_intr(void *arg);
78
79 int rt305x_get_int_mask (device_t);
80 void rt305x_set_int_mask (device_t, uint32_t);
81 int rt305x_get_int_status(device_t);
82 void rt305x_set_int_status(device_t, uint32_t);
83
84 /*
85 * GPIO interface
86 */
87 static int rt305x_gpio_pin_max(device_t dev, int *maxpin);
88 static int rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps);
89 static int rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t
90 *flags);
91 static int rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name);
92 static int rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags);
93 static int rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value);
94 static int rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val);
95 static int rt305x_gpio_pin_toggle(device_t dev, uint32_t pin);
96
97 static void
rt305x_gpio_pin_configure(struct rt305x_gpio_softc * sc,struct gpio_pin * pin,unsigned int flags)98 rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc, struct gpio_pin *pin,
99 unsigned int flags)
100 {
101 GPIO_LOCK(sc);
102
103 /*
104 * Manage input/output
105 */
106 if (flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) {
107 pin->gp_flags &= ~(GPIO_PIN_INPUT|GPIO_PIN_OUTPUT);
108 if (flags & GPIO_PIN_OUTPUT) {
109 pin->gp_flags |= GPIO_PIN_OUTPUT;
110 GPIO_BIT_SET(sc, pin->gp_pin, DIR);
111 }
112 else {
113 pin->gp_flags |= GPIO_PIN_INPUT;
114 GPIO_BIT_CLR(sc, pin->gp_pin, DIR);
115 }
116 }
117
118 if (flags & GPIO_PIN_INVOUT) {
119 pin->gp_flags |= GPIO_PIN_INVOUT;
120 GPIO_BIT_SET(sc, pin->gp_pin, POL);
121 }
122 else {
123 pin->gp_flags &= ~GPIO_PIN_INVOUT;
124 GPIO_BIT_CLR(sc, pin->gp_pin, POL);
125 }
126
127 if (flags & GPIO_PIN_INVIN) {
128 pin->gp_flags |= GPIO_PIN_INVIN;
129 GPIO_BIT_SET(sc, pin->gp_pin, POL);
130 }
131 else {
132 pin->gp_flags &= ~GPIO_PIN_INVIN;
133 GPIO_BIT_CLR(sc, pin->gp_pin, POL);
134 }
135
136 #ifdef notyet
137 /* Enable interrupt bits for rising/falling transitions */
138 if (flags & GPIO_PIN_REPORT) {
139 pin->gp_flags |= GPIO_PIN_REPORT;
140 GPIO_BIT_SET(sc, pin->gp_pin, RENA);
141 GPIO_BIT_SET(sc, pin->gp_pin, FENA);
142 device_printf(sc->dev, "Will report interrupt on pin %d\n",
143 pin->gp_pin);
144
145 }
146 else {
147 pin->gp_flags &= ~GPIO_PIN_REPORT;
148 GPIO_BIT_CLR(sc, pin->gp_pin, RENA);
149 GPIO_BIT_CLR(sc, pin->gp_pin, FENA);
150 }
151 #else
152 /* Disable generating interrupts for now */
153 GPIO_BIT_CLR(sc, pin->gp_pin, RENA);
154 GPIO_BIT_CLR(sc, pin->gp_pin, FENA);
155 #endif
156
157 GPIO_UNLOCK(sc);
158 }
159
160 static int
rt305x_gpio_pin_max(device_t dev,int * maxpin)161 rt305x_gpio_pin_max(device_t dev, int *maxpin)
162 {
163
164 *maxpin = NGPIO - 1;
165 return (0);
166 }
167
168 static int
rt305x_gpio_pin_getcaps(device_t dev,uint32_t pin,uint32_t * caps)169 rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps)
170 {
171 struct rt305x_gpio_softc *sc = device_get_softc(dev);
172 int i;
173
174 for (i = 0; i < sc->gpio_npins; i++) {
175 if (sc->gpio_pins[i].gp_pin == pin)
176 break;
177 }
178
179 if (i >= sc->gpio_npins)
180 return (EINVAL);
181
182 GPIO_LOCK(sc);
183 *caps = sc->gpio_pins[i].gp_caps;
184 GPIO_UNLOCK(sc);
185
186 return (0);
187 }
188
189 static int
rt305x_gpio_pin_getflags(device_t dev,uint32_t pin,uint32_t * flags)190 rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags)
191 {
192 struct rt305x_gpio_softc *sc = device_get_softc(dev);
193 int i;
194
195 for (i = 0; i < sc->gpio_npins; i++) {
196 if (sc->gpio_pins[i].gp_pin == pin)
197 break;
198 }
199
200 if (i >= sc->gpio_npins)
201 return (EINVAL);
202
203 GPIO_LOCK(sc);
204 *flags = sc->gpio_pins[i].gp_flags;
205 GPIO_UNLOCK(sc);
206
207 return (0);
208 }
209
210 static int
rt305x_gpio_pin_getname(device_t dev,uint32_t pin,char * name)211 rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name)
212 {
213 struct rt305x_gpio_softc *sc = device_get_softc(dev);
214 int i;
215
216 for (i = 0; i < sc->gpio_npins; i++) {
217 if (sc->gpio_pins[i].gp_pin == pin)
218 break;
219 }
220
221 if (i >= sc->gpio_npins)
222 return (EINVAL);
223
224 GPIO_LOCK(sc);
225 memcpy(name, sc->gpio_pins[i].gp_name, GPIOMAXNAME);
226 GPIO_UNLOCK(sc);
227
228 return (0);
229 }
230
231 static int
rt305x_gpio_pin_setflags(device_t dev,uint32_t pin,uint32_t flags)232 rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
233 {
234 int i;
235 struct rt305x_gpio_softc *sc = device_get_softc(dev);
236
237 for (i = 0; i < sc->gpio_npins; i++) {
238 if (sc->gpio_pins[i].gp_pin == pin)
239 break;
240 }
241
242 if (i >= sc->gpio_npins)
243 return (EINVAL);
244
245 rt305x_gpio_pin_configure(sc, &sc->gpio_pins[i], flags);
246
247 return (0);
248 }
249
250 static int
rt305x_gpio_pin_set(device_t dev,uint32_t pin,unsigned int value)251 rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
252 {
253 struct rt305x_gpio_softc *sc = device_get_softc(dev);
254 int i;
255
256 for (i = 0; i < sc->gpio_npins; i++) {
257 if (sc->gpio_pins[i].gp_pin == pin)
258 break;
259 }
260
261 if (i >= sc->gpio_npins)
262 return (EINVAL);
263
264
265 GPIO_LOCK(sc);
266 if (value) GPIO_BIT_SET(sc, i, DATA);
267 else GPIO_BIT_CLR(sc, i, DATA);
268 GPIO_UNLOCK(sc);
269
270 return (0);
271 }
272
273 static int
rt305x_gpio_pin_get(device_t dev,uint32_t pin,unsigned int * val)274 rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val)
275 {
276 struct rt305x_gpio_softc *sc = device_get_softc(dev);
277 int i;
278
279 for (i = 0; i < sc->gpio_npins; i++) {
280 if (sc->gpio_pins[i].gp_pin == pin)
281 break;
282 }
283
284 if (i >= sc->gpio_npins)
285 return (EINVAL);
286
287 GPIO_LOCK(sc);
288 *val = GPIO_BIT_GET(sc, i, DATA);
289 GPIO_UNLOCK(sc);
290
291 return (0);
292 }
293
294 static int
rt305x_gpio_pin_toggle(device_t dev,uint32_t pin)295 rt305x_gpio_pin_toggle(device_t dev, uint32_t pin)
296 {
297 int i;
298 struct rt305x_gpio_softc *sc = device_get_softc(dev);
299
300 for (i = 0; i < sc->gpio_npins; i++) {
301 if (sc->gpio_pins[i].gp_pin == pin)
302 break;
303 }
304
305 if (i >= sc->gpio_npins)
306 return (EINVAL);
307
308 GPIO_LOCK(sc);
309 GPIO_BIT_SET(sc, i, TOG);
310 GPIO_UNLOCK(sc);
311
312 return (0);
313 }
314
315 static int
rt305x_gpio_intr(void * arg)316 rt305x_gpio_intr(void *arg)
317 {
318 struct rt305x_gpio_softc *sc = arg;
319 #ifdef notyet
320 uint32_t i;
321 #endif
322 uint64_t input, value;
323 #ifdef notyet
324 uint64_t reset_pin;
325 char notify[16];
326 char pinname[6];
327 #endif
328
329 /* Read all reported pins */
330 input = GPIO_READ_ALL(sc, INT);
331 /* Clear int status */
332 GPIO_WRITE_ALL(sc, INT, input);
333 /* Clear report for OUTs */
334 input &= ~GPIO_READ_ALL(sc, DIR);
335 value = input & GPIO_READ_ALL(sc, DATA);
336
337 if (!input) goto intr_done;
338
339 #ifdef notyet
340 /* if reset_gpio and this pin is input */
341 if (sc->reset_gpio >= 0 && (input & (1 << sc->reset_gpio))) {
342 /* get reset_gpio pin value */
343 reset_pin = (value & (1 << sc->reset_gpio))?1:0;
344 if ( sc->reset_gpio_last != reset_pin ) {
345 /*
346 * if now reset is high, check how long
347 * and do reset if less than 2 seconds
348 */
349 if ( reset_pin &&
350 (time_uptime - sc->reset_gpio_ontime) < 2 )
351 shutdown_nice(0);
352
353 sc->reset_gpio_last = reset_pin;
354 sc->reset_gpio_ontime = time_uptime;
355 }
356 }
357
358 for ( i = 0; i < NGPIO; i ++ )
359 {
360 /* Next if output pin */
361 if ( !(( input >> i) & 1) ) continue;
362
363 if ( (((value & input) >> i) & 1) != sc->gpio_pins[i].gp_last )
364 {
365 /* !system=GPIO subsystem=pin7 type=PIN_HIGH period=3 */
366 snprintf(notify , sizeof(notify ), "period=%d",
367 (uint32_t)time_uptime - sc->gpio_pins[i].gp_time);
368 snprintf(pinname, sizeof(pinname), "pin%02d", i);
369 devctl_notify("GPIO", pinname,
370 (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
371 notify);
372 printf("GPIO[%s] %s %s\n", pinname,
373 (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
374 notify);
375 sc->gpio_pins[i].gp_last = ((value & input) >> i) & 1;
376 sc->gpio_pins[i].gp_time = time_uptime;
377 }
378
379 }
380 #endif
381
382 intr_done:
383 return (FILTER_HANDLED);
384 }
385
386 static int
rt305x_gpio_probe(device_t dev)387 rt305x_gpio_probe(device_t dev)
388 {
389 device_set_desc(dev, "RT305X GPIO driver");
390 return (0);
391 }
392
393 static uint64_t
rt305x_gpio_init(device_t dev)394 rt305x_gpio_init(device_t dev)
395 {
396 uint64_t avl = ~0ULL;
397 uint32_t gmode = rt305x_sysctl_get(SYSCTL_GPIOMODE);
398 if (!(gmode & SYSCTL_GPIOMODE_RGMII_GPIO_MODE))
399 avl &= ~RGMII_GPIO_MODE_MASK;
400 if (!(gmode & SYSCTL_GPIOMODE_SDRAM_GPIO_MODE))
401 avl &= ~SDRAM_GPIO_MODE_MASK;
402 if (!(gmode & SYSCTL_GPIOMODE_MDIO_GPIO_MODE))
403 avl &= ~MDIO_GPIO_MODE_MASK;
404 if (!(gmode & SYSCTL_GPIOMODE_JTAG_GPIO_MODE))
405 avl &= ~JTAG_GPIO_MODE_MASK;
406 if (!(gmode & SYSCTL_GPIOMODE_UARTL_GPIO_MODE))
407 avl &= ~UARTL_GPIO_MODE_MASK;
408 if (!(gmode & SYSCTL_GPIOMODE_SPI_GPIO_MODE))
409 avl &= ~SPI_GPIO_MODE_MASK;
410 if (!(gmode & SYSCTL_GPIOMODE_I2C_GPIO_MODE))
411 avl &= ~I2C_GPIO_MODE_MASK;
412 if ((gmode & SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO) !=
413 SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO)
414 avl &= ~I2C_GPIO_MODE_MASK;
415 /* D-Link DAP-1350 Board have
416 * MDIO_GPIO_MODE
417 * UARTF_GPIO_MODE
418 * SPI_GPIO_MODE
419 * I2C_GPIO_MODE
420 * So we have
421 * 00000001 10000000 01111111 11111110
422 */
423 return (avl);
424
425 }
426
427 #define DAP1350_RESET_GPIO 10
428
429 static int
rt305x_gpio_attach(device_t dev)430 rt305x_gpio_attach(device_t dev)
431 {
432 struct rt305x_gpio_softc *sc = device_get_softc(dev);
433 int error = 0, i;
434 uint64_t avlpins = 0;
435 sc->reset_gpio = DAP1350_RESET_GPIO;
436
437 KASSERT((device_get_unit(dev) == 0),
438 ("rt305x_gpio_gpio: Only one gpio module supported"));
439
440 mtx_init(&sc->gpio_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
441
442 /* Map control/status registers. */
443 sc->gpio_mem_rid = 0;
444 sc->gpio_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
445 &sc->gpio_mem_rid, RF_ACTIVE);
446
447 if (sc->gpio_mem_res == NULL) {
448 device_printf(dev, "couldn't map memory\n");
449 error = ENXIO;
450 rt305x_gpio_detach(dev);
451 return(error);
452 }
453
454 if ((sc->gpio_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
455 &sc->gpio_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
456 device_printf(dev, "unable to allocate IRQ resource\n");
457 return (ENXIO);
458 }
459
460 if ((bus_setup_intr(dev, sc->gpio_irq_res, INTR_TYPE_MISC,
461 /* rt305x_gpio_filter, */
462 rt305x_gpio_intr, NULL, sc, &sc->gpio_ih))) {
463 device_printf(dev,
464 "WARNING: unable to register interrupt handler\n");
465 return (ENXIO);
466 }
467
468 sc->dev = dev;
469 avlpins = rt305x_gpio_init(dev);
470
471 /* Configure all pins as input */
472 /* disable interrupts for all pins */
473 /* TODO */
474
475 sc->gpio_npins = NGPIO;
476 resource_int_value(device_get_name(dev), device_get_unit(dev),
477 "pins", &sc->gpio_npins);
478
479 for (i = 0; i < sc->gpio_npins; i++) {
480 sc->gpio_pins[i].gp_pin = i;
481 sc->gpio_pins[i].gp_caps = DEFAULT_CAPS;
482 sc->gpio_pins[i].gp_flags = 0;
483 }
484
485 /* Setup reset pin interrupt */
486 if (TUNABLE_INT_FETCH("reset_gpio", &sc->reset_gpio)) {
487 device_printf(dev, "\tHinted reset_gpio %d\n", sc->reset_gpio);
488 }
489 #ifdef notyet
490 if (sc->reset_gpio != -1) {
491 rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
492 GPIO_PIN_INPUT|GPIO_PIN_INVOUT|
493 GPIO_PIN_INVOUT|GPIO_PIN_REPORT);
494 device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
495 }
496 #else
497 if (sc->reset_gpio != -1) {
498 rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
499 GPIO_PIN_INPUT|GPIO_PIN_INVOUT);
500 device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
501 }
502 #endif
503
504 device_add_child(dev, "gpioc", -1);
505 device_add_child(dev, "gpiobus", -1);
506
507 return (bus_generic_attach(dev));
508 }
509
510 static int
rt305x_gpio_detach(device_t dev)511 rt305x_gpio_detach(device_t dev)
512 {
513 struct rt305x_gpio_softc *sc = device_get_softc(dev);
514
515 KASSERT(mtx_initialized(&sc->gpio_mtx), ("gpio mutex not initialized"));
516
517 bus_generic_detach(dev);
518
519 if (sc->gpio_mem_res)
520 bus_release_resource(dev, SYS_RES_MEMORY, sc->gpio_mem_rid,
521 sc->gpio_mem_res);
522
523 mtx_destroy(&sc->gpio_mtx);
524
525 return(0);
526 }
527
528 #ifdef notyet
529 static struct resource *
rt305x_gpio_alloc_resource(device_t bus,device_t child,int type,int * rid,u_long start,u_long end,u_long count,u_int flags)530 rt305x_gpio_alloc_resource(device_t bus, device_t child, int type, int *rid,
531 u_long start, u_long end, u_long count, u_int flags)
532 {
533 struct obio_softc *sc = device_get_softc(bus);
534 struct resource *rv;
535 struct rman *rm;
536
537 switch (type) {
538 case SYS_RES_GPIO:
539 rm = &sc->gpio_rman;
540 break;
541 default:
542 printf("%s: unknown resource type %d\n", __func__, type);
543 return (0);
544 }
545
546 rv = rman_reserve_resource(rm, start, end, count, flags, child);
547 if (rv == 0) {
548 printf("%s: could not reserve resource\n", __func__);
549 return (0);
550 }
551
552 rman_set_rid(rv, *rid);
553
554 return (rv);
555 }
556
557 static int
rt305x_gpio_activate_resource(device_t bus,device_t child,int type,int rid,struct resource * r)558 rt305x_gpio_activate_resource(device_t bus, device_t child, int type, int rid,
559 struct resource *r)
560 {
561
562 return (rman_activate_resource(r));
563 }
564
565 static int
rt305x_gpio_deactivate_resource(device_t bus,device_t child,int type,int rid,struct resource * r)566 rt305x_gpio_deactivate_resource(device_t bus, device_t child, int type, int rid,
567 struct resource *r)
568 {
569
570 return (rman_deactivate_resource(r));
571 }
572
573 static int
rt305x_gpio_release_resource(device_t dev,device_t child,int type,int rid,struct resource * r)574 rt305x_gpio_release_resource(device_t dev, device_t child, int type,
575 int rid, struct resource *r)
576 {
577 rman_release_resource(r);
578 return (0);
579 }
580 #endif
581
582 static device_method_t rt305x_gpio_methods[] = {
583 DEVMETHOD(device_probe, rt305x_gpio_probe),
584 DEVMETHOD(device_attach, rt305x_gpio_attach),
585 DEVMETHOD(device_detach, rt305x_gpio_detach),
586
587 /* GPIO protocol */
588 DEVMETHOD(gpio_pin_max, rt305x_gpio_pin_max),
589 DEVMETHOD(gpio_pin_getname, rt305x_gpio_pin_getname),
590 DEVMETHOD(gpio_pin_getflags, rt305x_gpio_pin_getflags),
591 DEVMETHOD(gpio_pin_getcaps, rt305x_gpio_pin_getcaps),
592 DEVMETHOD(gpio_pin_setflags, rt305x_gpio_pin_setflags),
593 DEVMETHOD(gpio_pin_get, rt305x_gpio_pin_get),
594 DEVMETHOD(gpio_pin_set, rt305x_gpio_pin_set),
595 DEVMETHOD(gpio_pin_toggle, rt305x_gpio_pin_toggle),
596 {0, 0},
597 };
598
599 static driver_t rt305x_gpio_driver = {
600 "gpio",
601 rt305x_gpio_methods,
602 sizeof(struct rt305x_gpio_softc),
603 };
604 static devclass_t rt305x_gpio_devclass;
605
606 DRIVER_MODULE(rt305x_gpio, obio, rt305x_gpio_driver,
607 rt305x_gpio_devclass, 0, 0);
608