xref: /freebsd/sys/powerpc/powermac/macgpio.c (revision eaef5f0af874690ec58b14be728d2e3d3df66579)
1b4dbc599SNathan Whitehorn /*-
2ecf558fdSNathan Whitehorn  * Copyright 2008 by Nathan Whitehorn. All rights reserved.
3b4dbc599SNathan Whitehorn  *
4b4dbc599SNathan Whitehorn  * Redistribution and use in source and binary forms, with or without
5b4dbc599SNathan Whitehorn  * modification, are permitted provided that the following conditions
6b4dbc599SNathan Whitehorn  * are met:
7b4dbc599SNathan Whitehorn  * 1. Redistributions of source code must retain the above copyright
8b4dbc599SNathan Whitehorn  *    notice, this list of conditions and the following disclaimer.
9b4dbc599SNathan Whitehorn  * 2. Redistributions in binary form must reproduce the above copyright
10b4dbc599SNathan Whitehorn  *    notice, this list of conditions and the following disclaimer in the
11b4dbc599SNathan Whitehorn  *    documentation and/or other materials provided with the distribution.
12b4dbc599SNathan Whitehorn  *
13b4dbc599SNathan Whitehorn  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14b4dbc599SNathan Whitehorn  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15b4dbc599SNathan Whitehorn  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16b4dbc599SNathan Whitehorn  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17b4dbc599SNathan Whitehorn  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
18b4dbc599SNathan Whitehorn  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19b4dbc599SNathan Whitehorn  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
20b4dbc599SNathan Whitehorn  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
21b4dbc599SNathan Whitehorn  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22b4dbc599SNathan Whitehorn  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23b4dbc599SNathan Whitehorn  * SUCH DAMAGE.
24b4dbc599SNathan Whitehorn  *
25b4dbc599SNathan Whitehorn  * $FreeBSD$
26b4dbc599SNathan Whitehorn  */
27b4dbc599SNathan Whitehorn 
28b4dbc599SNathan Whitehorn /*
29b4dbc599SNathan Whitehorn  * Driver for MacIO GPIO controller
30b4dbc599SNathan Whitehorn  */
31b4dbc599SNathan Whitehorn 
32b4dbc599SNathan Whitehorn #include <sys/param.h>
33b4dbc599SNathan Whitehorn #include <sys/systm.h>
34b4dbc599SNathan Whitehorn #include <sys/kernel.h>
35b4dbc599SNathan Whitehorn #include <sys/malloc.h>
36b4dbc599SNathan Whitehorn #include <sys/module.h>
37b4dbc599SNathan Whitehorn #include <sys/bus.h>
38b4dbc599SNathan Whitehorn #include <sys/rman.h>
39b4dbc599SNathan Whitehorn 
40b4dbc599SNathan Whitehorn #include <vm/vm.h>
41b4dbc599SNathan Whitehorn #include <vm/pmap.h>
42b4dbc599SNathan Whitehorn 
43*eaef5f0aSNathan Whitehorn #include <machine/bus.h>
44*eaef5f0aSNathan Whitehorn #include <machine/intr_machdep.h>
45*eaef5f0aSNathan Whitehorn #include <machine/pmap.h>
46b4dbc599SNathan Whitehorn #include <machine/resource.h>
47*eaef5f0aSNathan Whitehorn #include <machine/vmparam.h>
48b4dbc599SNathan Whitehorn 
49b4dbc599SNathan Whitehorn #include <dev/ofw/ofw_bus.h>
50b4dbc599SNathan Whitehorn #include <dev/ofw/ofw_bus_subr.h>
51b4dbc599SNathan Whitehorn #include <dev/ofw/openfirm.h>
52b4dbc599SNathan Whitehorn 
53ecf558fdSNathan Whitehorn #include <powerpc/powermac/macgpiovar.h>
54ecf558fdSNathan Whitehorn 
55b4dbc599SNathan Whitehorn /*
56b4dbc599SNathan Whitehorn  * Macgpio softc
57b4dbc599SNathan Whitehorn  */
58b4dbc599SNathan Whitehorn struct macgpio_softc {
59b4dbc599SNathan Whitehorn 	phandle_t	sc_node;
60b4dbc599SNathan Whitehorn 	struct resource	*sc_gpios;
61b4dbc599SNathan Whitehorn 	int		sc_gpios_rid;
62b4dbc599SNathan Whitehorn };
63b4dbc599SNathan Whitehorn 
64b4dbc599SNathan Whitehorn static MALLOC_DEFINE(M_MACGPIO, "macgpio", "macgpio device information");
65b4dbc599SNathan Whitehorn 
66b4dbc599SNathan Whitehorn static int	macgpio_probe(device_t);
67b4dbc599SNathan Whitehorn static int	macgpio_attach(device_t);
68b4dbc599SNathan Whitehorn static int	macgpio_print_child(device_t dev, device_t child);
69b4dbc599SNathan Whitehorn static void	macgpio_probe_nomatch(device_t, device_t);
70b4dbc599SNathan Whitehorn static struct resource *macgpio_alloc_resource(device_t, device_t, int, int *,
71b4dbc599SNathan Whitehorn 		    u_long, u_long, u_long, u_int);
72b4dbc599SNathan Whitehorn static int	macgpio_activate_resource(device_t, device_t, int, int,
73b4dbc599SNathan Whitehorn 		    struct resource *);
74b4dbc599SNathan Whitehorn static int	macgpio_deactivate_resource(device_t, device_t, int, int,
75b4dbc599SNathan Whitehorn 		    struct resource *);
76b4dbc599SNathan Whitehorn static ofw_bus_get_devinfo_t macgpio_get_devinfo;
77b4dbc599SNathan Whitehorn 
78b4dbc599SNathan Whitehorn /*
79b4dbc599SNathan Whitehorn  * Bus interface definition
80b4dbc599SNathan Whitehorn  */
81b4dbc599SNathan Whitehorn static device_method_t macgpio_methods[] = {
82b4dbc599SNathan Whitehorn 	/* Device interface */
83b4dbc599SNathan Whitehorn 	DEVMETHOD(device_probe,         macgpio_probe),
84b4dbc599SNathan Whitehorn 	DEVMETHOD(device_attach,        macgpio_attach),
85b4dbc599SNathan Whitehorn 	DEVMETHOD(device_detach,        bus_generic_detach),
86b4dbc599SNathan Whitehorn 	DEVMETHOD(device_shutdown,      bus_generic_shutdown),
87b4dbc599SNathan Whitehorn 	DEVMETHOD(device_suspend,       bus_generic_suspend),
88b4dbc599SNathan Whitehorn 	DEVMETHOD(device_resume,        bus_generic_resume),
89b4dbc599SNathan Whitehorn 
90b4dbc599SNathan Whitehorn 	/* Bus interface */
91b4dbc599SNathan Whitehorn 	DEVMETHOD(bus_print_child,      macgpio_print_child),
92b4dbc599SNathan Whitehorn 	DEVMETHOD(bus_probe_nomatch,    macgpio_probe_nomatch),
93b4dbc599SNathan Whitehorn 	DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
94b4dbc599SNathan Whitehorn 	DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
95b4dbc599SNathan Whitehorn 
96b4dbc599SNathan Whitehorn         DEVMETHOD(bus_alloc_resource,   macgpio_alloc_resource),
97b4dbc599SNathan Whitehorn         DEVMETHOD(bus_activate_resource, macgpio_activate_resource),
98b4dbc599SNathan Whitehorn         DEVMETHOD(bus_deactivate_resource, macgpio_deactivate_resource),
99b4dbc599SNathan Whitehorn         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
100b4dbc599SNathan Whitehorn 
1014fe8025dSNathan Whitehorn 	DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
1024fe8025dSNathan Whitehorn 
103b4dbc599SNathan Whitehorn 	/* ofw_bus interface */
104b4dbc599SNathan Whitehorn 	DEVMETHOD(ofw_bus_get_devinfo,	macgpio_get_devinfo),
105b4dbc599SNathan Whitehorn 	DEVMETHOD(ofw_bus_get_compat,	ofw_bus_gen_get_compat),
106b4dbc599SNathan Whitehorn 	DEVMETHOD(ofw_bus_get_model,	ofw_bus_gen_get_model),
107b4dbc599SNathan Whitehorn 	DEVMETHOD(ofw_bus_get_name,	ofw_bus_gen_get_name),
108b4dbc599SNathan Whitehorn 	DEVMETHOD(ofw_bus_get_node,	ofw_bus_gen_get_node),
109b4dbc599SNathan Whitehorn 	DEVMETHOD(ofw_bus_get_type,	ofw_bus_gen_get_type),
110b4dbc599SNathan Whitehorn 
111b4dbc599SNathan Whitehorn 	{ 0, 0 }
112b4dbc599SNathan Whitehorn };
113b4dbc599SNathan Whitehorn 
114b4dbc599SNathan Whitehorn static driver_t macgpio_pci_driver = {
115b4dbc599SNathan Whitehorn         "macgpio",
116b4dbc599SNathan Whitehorn         macgpio_methods,
117b4dbc599SNathan Whitehorn 	sizeof(struct macgpio_softc)
118b4dbc599SNathan Whitehorn };
119b4dbc599SNathan Whitehorn 
120b4dbc599SNathan Whitehorn devclass_t macgpio_devclass;
121b4dbc599SNathan Whitehorn 
122b4dbc599SNathan Whitehorn DRIVER_MODULE(macgpio, macio, macgpio_pci_driver, macgpio_devclass, 0, 0);
123b4dbc599SNathan Whitehorn 
124b4dbc599SNathan Whitehorn struct macgpio_devinfo {
125b4dbc599SNathan Whitehorn 	struct ofw_bus_devinfo mdi_obdinfo;
126b4dbc599SNathan Whitehorn 	struct resource_list mdi_resources;
127b4dbc599SNathan Whitehorn 
128b4dbc599SNathan Whitehorn 	int gpio_num;
129b4dbc599SNathan Whitehorn };
130b4dbc599SNathan Whitehorn 
131b4dbc599SNathan Whitehorn static int
132b4dbc599SNathan Whitehorn macgpio_probe(device_t dev)
133b4dbc599SNathan Whitehorn {
134b4dbc599SNathan Whitehorn 	const char *name;
135b4dbc599SNathan Whitehorn 
136b4dbc599SNathan Whitehorn 	name = ofw_bus_get_name(dev);
137b4dbc599SNathan Whitehorn 	if (name && strcmp(name, "gpio") == 0) {
138b4dbc599SNathan Whitehorn 		device_set_desc(dev, "MacIO GPIO Controller");
139b4dbc599SNathan Whitehorn 		return (0);
140b4dbc599SNathan Whitehorn 	}
141b4dbc599SNathan Whitehorn 
142b4dbc599SNathan Whitehorn         return (ENXIO);
143b4dbc599SNathan Whitehorn }
144b4dbc599SNathan Whitehorn 
145b4dbc599SNathan Whitehorn /*
146b4dbc599SNathan Whitehorn  * Scan Open Firmware child nodes, and attach these as children
147b4dbc599SNathan Whitehorn  * of the macgpio bus
148b4dbc599SNathan Whitehorn  */
149b4dbc599SNathan Whitehorn static int
150b4dbc599SNathan Whitehorn macgpio_attach(device_t dev)
151b4dbc599SNathan Whitehorn {
152b4dbc599SNathan Whitehorn 	struct macgpio_softc *sc;
153b4dbc599SNathan Whitehorn         struct macgpio_devinfo *dinfo;
154*eaef5f0aSNathan Whitehorn         phandle_t root, child, iparent;
155b4dbc599SNathan Whitehorn         device_t cdev;
156b4dbc599SNathan Whitehorn 	uint32_t irq;
157b4dbc599SNathan Whitehorn 
158b4dbc599SNathan Whitehorn 	sc = device_get_softc(dev);
159b4dbc599SNathan Whitehorn 	root = sc->sc_node = ofw_bus_get_node(dev);
160b4dbc599SNathan Whitehorn 
161b4dbc599SNathan Whitehorn 	sc->sc_gpios = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
162b4dbc599SNathan Whitehorn 	    &sc->sc_gpios_rid, RF_ACTIVE);
163b4dbc599SNathan Whitehorn 
164b4dbc599SNathan Whitehorn 	/*
165b4dbc599SNathan Whitehorn 	 * Iterate through the sub-devices
166b4dbc599SNathan Whitehorn 	 */
167b4dbc599SNathan Whitehorn 	for (child = OF_child(root); child != 0; child = OF_peer(child)) {
168b4dbc599SNathan Whitehorn 		dinfo = malloc(sizeof(*dinfo), M_MACGPIO, M_WAITOK | M_ZERO);
169b4dbc599SNathan Whitehorn 		if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo, child) !=
170b4dbc599SNathan Whitehorn 		    0) {
171b4dbc599SNathan Whitehorn 			free(dinfo, M_MACGPIO);
172b4dbc599SNathan Whitehorn 			continue;
173b4dbc599SNathan Whitehorn 		}
174b4dbc599SNathan Whitehorn 
175b4dbc599SNathan Whitehorn 		if (OF_getprop(child,"reg",&dinfo->gpio_num,
176b4dbc599SNathan Whitehorn 		    sizeof(dinfo->gpio_num)) != sizeof(dinfo->gpio_num)) {
17748ed71b9SNathan Whitehorn 			/*
17848ed71b9SNathan Whitehorn 			 * Some early GPIO controllers don't provide GPIO
17948ed71b9SNathan Whitehorn 			 * numbers for GPIOs designed only to provide
18048ed71b9SNathan Whitehorn 			 * interrupt resources.  We should still allow these
18148ed71b9SNathan Whitehorn 			 * to attach, but with caution.
18248ed71b9SNathan Whitehorn 			 */
18348ed71b9SNathan Whitehorn 
18448ed71b9SNathan Whitehorn 			dinfo->gpio_num = -1;
185b4dbc599SNathan Whitehorn 		}
186b4dbc599SNathan Whitehorn 
187b4dbc599SNathan Whitehorn 		resource_list_init(&dinfo->mdi_resources);
188b4dbc599SNathan Whitehorn 
189b4dbc599SNathan Whitehorn 		if (OF_getprop(child, "interrupts", &irq, sizeof(irq)) ==
190b4dbc599SNathan Whitehorn 		    sizeof(irq)) {
191*eaef5f0aSNathan Whitehorn 			OF_searchprop(child, "interrupt-parent", &iparent,
192*eaef5f0aSNathan Whitehorn 			    sizeof(iparent));
193b4dbc599SNathan Whitehorn 			resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
194*eaef5f0aSNathan Whitehorn 			    0, INTR_VEC(iparent, irq), INTR_VEC(iparent, irq),
195*eaef5f0aSNathan Whitehorn 			    1);
196b4dbc599SNathan Whitehorn 		}
197b4dbc599SNathan Whitehorn 
198b4dbc599SNathan Whitehorn 		/* Fix messed-up offsets */
199b4dbc599SNathan Whitehorn 		if (dinfo->gpio_num > 0x50)
200b4dbc599SNathan Whitehorn 			dinfo->gpio_num -= 0x50;
201b4dbc599SNathan Whitehorn 
202b4dbc599SNathan Whitehorn 		cdev = device_add_child(dev, NULL, -1);
203b4dbc599SNathan Whitehorn 		if (cdev == NULL) {
204b4dbc599SNathan Whitehorn 			device_printf(dev, "<%s>: device_add_child failed\n",
205b4dbc599SNathan Whitehorn 			    dinfo->mdi_obdinfo.obd_name);
206b4dbc599SNathan Whitehorn 			ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
207b4dbc599SNathan Whitehorn 			free(dinfo, M_MACGPIO);
208b4dbc599SNathan Whitehorn 			continue;
209b4dbc599SNathan Whitehorn 		}
210b4dbc599SNathan Whitehorn 		device_set_ivars(cdev, dinfo);
211b4dbc599SNathan Whitehorn 	}
212b4dbc599SNathan Whitehorn 
213b4dbc599SNathan Whitehorn 	return (bus_generic_attach(dev));
214b4dbc599SNathan Whitehorn }
215b4dbc599SNathan Whitehorn 
216b4dbc599SNathan Whitehorn 
217b4dbc599SNathan Whitehorn static int
218b4dbc599SNathan Whitehorn macgpio_print_child(device_t dev, device_t child)
219b4dbc599SNathan Whitehorn {
220b4dbc599SNathan Whitehorn         struct macgpio_devinfo *dinfo;
221b4dbc599SNathan Whitehorn         int retval = 0;
222b4dbc599SNathan Whitehorn 
223b4dbc599SNathan Whitehorn         dinfo = device_get_ivars(child);
224b4dbc599SNathan Whitehorn 
225b4dbc599SNathan Whitehorn         retval += bus_print_child_header(dev, child);
226b4dbc599SNathan Whitehorn 
227ecf558fdSNathan Whitehorn 	if (dinfo->gpio_num >= GPIO_BASE)
228ecf558fdSNathan Whitehorn 		printf(" gpio %d", dinfo->gpio_num - GPIO_BASE);
229ecf558fdSNathan Whitehorn 	else if (dinfo->gpio_num >= GPIO_EXTINT_BASE)
230ecf558fdSNathan Whitehorn 		printf(" extint-gpio %d", dinfo->gpio_num - GPIO_EXTINT_BASE);
23148ed71b9SNathan Whitehorn 	else if (dinfo->gpio_num >= 0)
232ecf558fdSNathan Whitehorn 		printf(" addr 0x%02x", dinfo->gpio_num); /* should not happen */
233ecf558fdSNathan Whitehorn 
234b4dbc599SNathan Whitehorn 	resource_list_print_type(&dinfo->mdi_resources, "irq", SYS_RES_IRQ,
235b4dbc599SNathan Whitehorn 	    "%ld");
236b4dbc599SNathan Whitehorn         retval += bus_print_child_footer(dev, child);
237b4dbc599SNathan Whitehorn 
238b4dbc599SNathan Whitehorn         return (retval);
239b4dbc599SNathan Whitehorn }
240b4dbc599SNathan Whitehorn 
241b4dbc599SNathan Whitehorn 
242b4dbc599SNathan Whitehorn static void
243b4dbc599SNathan Whitehorn macgpio_probe_nomatch(device_t dev, device_t child)
244b4dbc599SNathan Whitehorn {
245b4dbc599SNathan Whitehorn         struct macgpio_devinfo *dinfo;
246b4dbc599SNathan Whitehorn 	const char *type;
247b4dbc599SNathan Whitehorn 
248b4dbc599SNathan Whitehorn 	if (bootverbose) {
249b4dbc599SNathan Whitehorn 		dinfo = device_get_ivars(child);
250b4dbc599SNathan Whitehorn 
251b4dbc599SNathan Whitehorn 		if ((type = ofw_bus_get_type(child)) == NULL)
252b4dbc599SNathan Whitehorn 			type = "(unknown)";
253b4dbc599SNathan Whitehorn 		device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child));
25448ed71b9SNathan Whitehorn 		if (dinfo->gpio_num >= 0)
255b4dbc599SNathan Whitehorn 			printf(" gpio %d",dinfo->gpio_num);
256b4dbc599SNathan Whitehorn 		resource_list_print_type(&dinfo->mdi_resources, "irq",
257b4dbc599SNathan Whitehorn 		    SYS_RES_IRQ, "%ld");
258b4dbc599SNathan Whitehorn 		printf(" (no driver attached)\n");
259b4dbc599SNathan Whitehorn 	}
260b4dbc599SNathan Whitehorn }
261b4dbc599SNathan Whitehorn 
262b4dbc599SNathan Whitehorn 
263b4dbc599SNathan Whitehorn static struct resource *
264b4dbc599SNathan Whitehorn macgpio_alloc_resource(device_t bus, device_t child, int type, int *rid,
265b4dbc599SNathan Whitehorn 		     u_long start, u_long end, u_long count, u_int flags)
266b4dbc599SNathan Whitehorn {
267b4dbc599SNathan Whitehorn 	struct macgpio_softc *sc;
268b4dbc599SNathan Whitehorn 	struct macgpio_devinfo *dinfo;
269b4dbc599SNathan Whitehorn 
270b4dbc599SNathan Whitehorn 	sc = device_get_softc(bus);
271b4dbc599SNathan Whitehorn 	dinfo = device_get_ivars(child);
272b4dbc599SNathan Whitehorn 
273b4dbc599SNathan Whitehorn 	if (type != SYS_RES_IRQ)
274b4dbc599SNathan Whitehorn 		return (NULL);
275b4dbc599SNathan Whitehorn 
276b4dbc599SNathan Whitehorn 	return (resource_list_alloc(&dinfo->mdi_resources, bus, child, type,
277b4dbc599SNathan Whitehorn 	    rid, start, end, count, flags));
278b4dbc599SNathan Whitehorn }
279b4dbc599SNathan Whitehorn 
280b4dbc599SNathan Whitehorn static int
281b4dbc599SNathan Whitehorn macgpio_activate_resource(device_t bus, device_t child, int type, int rid,
282b4dbc599SNathan Whitehorn 			   struct resource *res)
283b4dbc599SNathan Whitehorn {
284b4dbc599SNathan Whitehorn 	struct macgpio_softc *sc;
285b4dbc599SNathan Whitehorn 	struct macgpio_devinfo *dinfo;
286b4dbc599SNathan Whitehorn 	u_char val;
287b4dbc599SNathan Whitehorn 
288b4dbc599SNathan Whitehorn 	sc = device_get_softc(bus);
289b4dbc599SNathan Whitehorn 	dinfo = device_get_ivars(child);
290b4dbc599SNathan Whitehorn 
291b4dbc599SNathan Whitehorn 	if (type != SYS_RES_IRQ)
292b4dbc599SNathan Whitehorn 		return ENXIO;
293b4dbc599SNathan Whitehorn 
29448ed71b9SNathan Whitehorn 	if (dinfo->gpio_num >= 0) {
295b4dbc599SNathan Whitehorn 		val = bus_read_1(sc->sc_gpios,dinfo->gpio_num);
296b4dbc599SNathan Whitehorn 		val |= 0x80;
297b4dbc599SNathan Whitehorn 		bus_write_1(sc->sc_gpios,dinfo->gpio_num,val);
29848ed71b9SNathan Whitehorn 	}
299b4dbc599SNathan Whitehorn 
300b4dbc599SNathan Whitehorn 	return (bus_activate_resource(bus, type, rid, res));
301b4dbc599SNathan Whitehorn }
302b4dbc599SNathan Whitehorn 
303b4dbc599SNathan Whitehorn 
304b4dbc599SNathan Whitehorn static int
305b4dbc599SNathan Whitehorn macgpio_deactivate_resource(device_t bus, device_t child, int type, int rid,
306b4dbc599SNathan Whitehorn 			  struct resource *res)
307b4dbc599SNathan Whitehorn {
308b4dbc599SNathan Whitehorn 	struct macgpio_softc *sc;
309b4dbc599SNathan Whitehorn 	struct macgpio_devinfo *dinfo;
310b4dbc599SNathan Whitehorn 	u_char val;
311b4dbc599SNathan Whitehorn 
312b4dbc599SNathan Whitehorn 	sc = device_get_softc(bus);
313b4dbc599SNathan Whitehorn 	dinfo = device_get_ivars(child);
314b4dbc599SNathan Whitehorn 
315b4dbc599SNathan Whitehorn 	if (type != SYS_RES_IRQ)
316b4dbc599SNathan Whitehorn 		return ENXIO;
317b4dbc599SNathan Whitehorn 
31848ed71b9SNathan Whitehorn 	if (dinfo->gpio_num >= 0) {
319b4dbc599SNathan Whitehorn 		val = bus_read_1(sc->sc_gpios,dinfo->gpio_num);
320b4dbc599SNathan Whitehorn 		val &= ~0x80;
321b4dbc599SNathan Whitehorn 		bus_write_1(sc->sc_gpios,dinfo->gpio_num,val);
32248ed71b9SNathan Whitehorn 	}
323b4dbc599SNathan Whitehorn 
324b4dbc599SNathan Whitehorn 	return (bus_deactivate_resource(bus, type, rid, res));
325b4dbc599SNathan Whitehorn }
326b4dbc599SNathan Whitehorn 
327b4dbc599SNathan Whitehorn uint8_t
328b4dbc599SNathan Whitehorn macgpio_read(device_t dev)
329b4dbc599SNathan Whitehorn {
330b4dbc599SNathan Whitehorn 	struct macgpio_softc *sc;
331b4dbc599SNathan Whitehorn 	struct macgpio_devinfo *dinfo;
332b4dbc599SNathan Whitehorn 
333b4dbc599SNathan Whitehorn 	sc = device_get_softc(device_get_parent(dev));
334b4dbc599SNathan Whitehorn 	dinfo = device_get_ivars(dev);
335b4dbc599SNathan Whitehorn 
33648ed71b9SNathan Whitehorn 	if (dinfo->gpio_num < 0)
33748ed71b9SNathan Whitehorn 		return (0);
33848ed71b9SNathan Whitehorn 
339b4dbc599SNathan Whitehorn 	return (bus_read_1(sc->sc_gpios,dinfo->gpio_num));
340b4dbc599SNathan Whitehorn }
341b4dbc599SNathan Whitehorn 
342b4dbc599SNathan Whitehorn void
343b4dbc599SNathan Whitehorn macgpio_write(device_t dev, uint8_t val)
344b4dbc599SNathan Whitehorn {
345b4dbc599SNathan Whitehorn 	struct macgpio_softc *sc;
346b4dbc599SNathan Whitehorn 	struct macgpio_devinfo *dinfo;
347b4dbc599SNathan Whitehorn 
348b4dbc599SNathan Whitehorn 	sc = device_get_softc(device_get_parent(dev));
349b4dbc599SNathan Whitehorn 	dinfo = device_get_ivars(dev);
350b4dbc599SNathan Whitehorn 
35148ed71b9SNathan Whitehorn 	if (dinfo->gpio_num < 0)
35248ed71b9SNathan Whitehorn 		return;
35348ed71b9SNathan Whitehorn 
354b4dbc599SNathan Whitehorn 	bus_write_1(sc->sc_gpios,dinfo->gpio_num,val);
355b4dbc599SNathan Whitehorn }
356b4dbc599SNathan Whitehorn 
357b4dbc599SNathan Whitehorn static const struct ofw_bus_devinfo *
358b4dbc599SNathan Whitehorn macgpio_get_devinfo(device_t dev, device_t child)
359b4dbc599SNathan Whitehorn {
360b4dbc599SNathan Whitehorn 	struct macgpio_devinfo *dinfo;
361b4dbc599SNathan Whitehorn 
362b4dbc599SNathan Whitehorn 	dinfo = device_get_ivars(child);
363b4dbc599SNathan Whitehorn 	return (&dinfo->mdi_obdinfo);
364b4dbc599SNathan Whitehorn }
365b4dbc599SNathan Whitehorn 
366