1/*-
2 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
|
27__FBSDID("$FreeBSD: head/sys/arm/at91/at91_pio.c 225882 2011-09-30 04:55:23Z kevlo $");
| 27__FBSDID("$FreeBSD: head/sys/arm/at91/at91_pio.c 234281 2012-04-14 11:29:32Z marius $");
|
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/kernel.h>
34#include <sys/lock.h>
35#include <sys/mbuf.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38#include <sys/mutex.h>
39#include <sys/rman.h>
40#include <machine/bus.h>
41
42#include <arm/at91/at91reg.h>
43#include <arm/at91/at91_pioreg.h>
44#include <arm/at91/at91_piovar.h>
45
46struct at91_pio_softc
47{
48 device_t dev; /* Myself */
49 void *intrhand; /* Interrupt handle */
50 struct resource *irq_res; /* IRQ resource */
51 struct resource *mem_res; /* Memory resource */
52 struct mtx sc_mtx; /* basically a perimeter lock */
53 struct cdev *cdev;
54 int flags;
| 28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/kernel.h>
34#include <sys/lock.h>
35#include <sys/mbuf.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38#include <sys/mutex.h>
39#include <sys/rman.h>
40#include <machine/bus.h>
41
42#include <arm/at91/at91reg.h>
43#include <arm/at91/at91_pioreg.h>
44#include <arm/at91/at91_piovar.h>
45
46struct at91_pio_softc
47{
48 device_t dev; /* Myself */
49 void *intrhand; /* Interrupt handle */
50 struct resource *irq_res; /* IRQ resource */
51 struct resource *mem_res; /* Memory resource */
52 struct mtx sc_mtx; /* basically a perimeter lock */
53 struct cdev *cdev;
54 int flags;
|
55#define OPENED 1
| 55#define OPENED 1
|
56};
57
58static inline uint32_t
59RD4(struct at91_pio_softc *sc, bus_size_t off)
60{
| 56};
57
58static inline uint32_t
59RD4(struct at91_pio_softc *sc, bus_size_t off)
60{
|
| 61
|
61 return (bus_read_4(sc->mem_res, off));
62}
63
64static inline void
65WR4(struct at91_pio_softc *sc, bus_size_t off, uint32_t val)
66{
| 62 return (bus_read_4(sc->mem_res, off));
63}
64
65static inline void
66WR4(struct at91_pio_softc *sc, bus_size_t off, uint32_t val)
67{
|
| 68
|
67 bus_write_4(sc->mem_res, off, val);
68}
69
| 69 bus_write_4(sc->mem_res, off, val);
70}
71
|
70#define AT91_PIO_LOCK(_sc) mtx_lock_spin(&(_sc)->sc_mtx)
| 72#define AT91_PIO_LOCK(_sc) mtx_lock_spin(&(_sc)->sc_mtx)
|
71#define AT91_PIO_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->sc_mtx)
| 73#define AT91_PIO_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->sc_mtx)
|
72#define AT91_PIO_LOCK_INIT(_sc) \
| 74#define AT91_PIO_LOCK_INIT(_sc) \
|
73 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
74 "pio", MTX_SPIN)
| 75 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
76 "pio", MTX_SPIN)
|
75#define AT91_PIO_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
76#define AT91_PIO_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
77#define AT91_PIO_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
78#define CDEV2SOFTC(dev) ((dev)->si_drv1)
| 77#define AT91_PIO_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
78#define AT91_PIO_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
79#define AT91_PIO_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
80#define CDEV2SOFTC(dev) ((dev)->si_drv1)
|
79
80static devclass_t at91_pio_devclass;
81
82/* bus entry points */
83
84static int at91_pio_probe(device_t dev);
85static int at91_pio_attach(device_t dev);
86static int at91_pio_detach(device_t dev);
87static int at91_pio_intr(void *);
88
89/* helper routines */
90static int at91_pio_activate(device_t dev);
91static void at91_pio_deactivate(device_t dev);
92
93/* cdev routines */
94static d_open_t at91_pio_open;
95static d_close_t at91_pio_close;
96static d_ioctl_t at91_pio_ioctl;
97
98static struct cdevsw at91_pio_cdevsw =
99{
100 .d_version = D_VERSION,
101 .d_open = at91_pio_open,
102 .d_close = at91_pio_close,
103 .d_ioctl = at91_pio_ioctl
104};
105
106static int
107at91_pio_probe(device_t dev)
108{
109 const char *name;
110
111 switch (device_get_unit(dev)) {
112 case 0:
113 name = "PIOA";
114 break;
115 case 1:
116 name = "PIOB";
117 break;
118 case 2:
119 name = "PIOC";
120 break;
121 case 3:
122 name = "PIOD";
123 break;
124 default:
125 name = "PIO";
126 break;
127 }
128 device_set_desc(dev, name);
129 return (0);
130}
131
132static int
133at91_pio_attach(device_t dev)
134{
| 81
82static devclass_t at91_pio_devclass;
83
84/* bus entry points */
85
86static int at91_pio_probe(device_t dev);
87static int at91_pio_attach(device_t dev);
88static int at91_pio_detach(device_t dev);
89static int at91_pio_intr(void *);
90
91/* helper routines */
92static int at91_pio_activate(device_t dev);
93static void at91_pio_deactivate(device_t dev);
94
95/* cdev routines */
96static d_open_t at91_pio_open;
97static d_close_t at91_pio_close;
98static d_ioctl_t at91_pio_ioctl;
99
100static struct cdevsw at91_pio_cdevsw =
101{
102 .d_version = D_VERSION,
103 .d_open = at91_pio_open,
104 .d_close = at91_pio_close,
105 .d_ioctl = at91_pio_ioctl
106};
107
108static int
109at91_pio_probe(device_t dev)
110{
111 const char *name;
112
113 switch (device_get_unit(dev)) {
114 case 0:
115 name = "PIOA";
116 break;
117 case 1:
118 name = "PIOB";
119 break;
120 case 2:
121 name = "PIOC";
122 break;
123 case 3:
124 name = "PIOD";
125 break;
126 default:
127 name = "PIO";
128 break;
129 }
130 device_set_desc(dev, name);
131 return (0);
132}
133
134static int
135at91_pio_attach(device_t dev)
136{
|
135 struct at91_pio_softc *sc = device_get_softc(dev);
| 137 struct at91_pio_softc *sc;
|
136 int err;
137
| 138 int err;
139
|
| 140 sc = device_get_softc(dev);
|
138 sc->dev = dev;
139 err = at91_pio_activate(dev);
140 if (err)
141 goto out;
142
143 device_printf(dev, "ABSR: %#x OSR: %#x PSR:%#x ODSR: %#x\n",
144 RD4(sc, PIO_ABSR), RD4(sc, PIO_OSR), RD4(sc, PIO_PSR),
145 RD4(sc, PIO_ODSR));
146 AT91_PIO_LOCK_INIT(sc);
147
148 /*
| 141 sc->dev = dev;
142 err = at91_pio_activate(dev);
143 if (err)
144 goto out;
145
146 device_printf(dev, "ABSR: %#x OSR: %#x PSR:%#x ODSR: %#x\n",
147 RD4(sc, PIO_ABSR), RD4(sc, PIO_OSR), RD4(sc, PIO_PSR),
148 RD4(sc, PIO_ODSR));
149 AT91_PIO_LOCK_INIT(sc);
150
151 /*
|
149 * Activate the interrupt, but disable all interrupts in the hardware
| 152 * Activate the interrupt, but disable all interrupts in the hardware.
|
150 */
151 WR4(sc, PIO_IDR, 0xffffffff);
152 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC,
153 at91_pio_intr, NULL, sc, &sc->intrhand);
154 if (err) {
155 AT91_PIO_LOCK_DESTROY(sc);
156 goto out;
157 }
158 sc->cdev = make_dev(&at91_pio_cdevsw, device_get_unit(dev), UID_ROOT,
159 GID_WHEEL, 0600, "pio%d", device_get_unit(dev));
160 if (sc->cdev == NULL) {
161 err = ENOMEM;
162 goto out;
163 }
164 sc->cdev->si_drv1 = sc;
165out:
166 if (err)
167 at91_pio_deactivate(dev);
168 return (err);
169}
170
171static int
172at91_pio_detach(device_t dev)
173{
| 153 */
154 WR4(sc, PIO_IDR, 0xffffffff);
155 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC,
156 at91_pio_intr, NULL, sc, &sc->intrhand);
157 if (err) {
158 AT91_PIO_LOCK_DESTROY(sc);
159 goto out;
160 }
161 sc->cdev = make_dev(&at91_pio_cdevsw, device_get_unit(dev), UID_ROOT,
162 GID_WHEEL, 0600, "pio%d", device_get_unit(dev));
163 if (sc->cdev == NULL) {
164 err = ENOMEM;
165 goto out;
166 }
167 sc->cdev->si_drv1 = sc;
168out:
169 if (err)
170 at91_pio_deactivate(dev);
171 return (err);
172}
173
174static int
175at91_pio_detach(device_t dev)
176{
|
| 177
|
174 return (EBUSY); /* XXX */
175}
176
177static int
178at91_pio_activate(device_t dev)
179{
180 struct at91_pio_softc *sc;
181 int rid;
182
183 sc = device_get_softc(dev);
184 rid = 0;
185 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
186 RF_ACTIVE);
187 if (sc->mem_res == NULL)
188 goto errout;
189 rid = 0;
190 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
191 RF_ACTIVE | RF_SHAREABLE);
192 if (sc->irq_res == NULL)
193 goto errout;
194 return (0);
195errout:
196 at91_pio_deactivate(dev);
197 return (ENOMEM);
198}
199
200static void
201at91_pio_deactivate(device_t dev)
202{
203 struct at91_pio_softc *sc;
204
205 sc = device_get_softc(dev);
206 if (sc->intrhand)
207 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
208 sc->intrhand = 0;
209 bus_generic_detach(sc->dev);
210 if (sc->mem_res)
211 bus_release_resource(dev, SYS_RES_IOPORT,
212 rman_get_rid(sc->mem_res), sc->mem_res);
213 sc->mem_res = 0;
214 if (sc->irq_res)
215 bus_release_resource(dev, SYS_RES_IRQ,
216 rman_get_rid(sc->irq_res), sc->irq_res);
217 sc->irq_res = 0;
| 178 return (EBUSY); /* XXX */
179}
180
181static int
182at91_pio_activate(device_t dev)
183{
184 struct at91_pio_softc *sc;
185 int rid;
186
187 sc = device_get_softc(dev);
188 rid = 0;
189 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
190 RF_ACTIVE);
191 if (sc->mem_res == NULL)
192 goto errout;
193 rid = 0;
194 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
195 RF_ACTIVE | RF_SHAREABLE);
196 if (sc->irq_res == NULL)
197 goto errout;
198 return (0);
199errout:
200 at91_pio_deactivate(dev);
201 return (ENOMEM);
202}
203
204static void
205at91_pio_deactivate(device_t dev)
206{
207 struct at91_pio_softc *sc;
208
209 sc = device_get_softc(dev);
210 if (sc->intrhand)
211 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
212 sc->intrhand = 0;
213 bus_generic_detach(sc->dev);
214 if (sc->mem_res)
215 bus_release_resource(dev, SYS_RES_IOPORT,
216 rman_get_rid(sc->mem_res), sc->mem_res);
217 sc->mem_res = 0;
218 if (sc->irq_res)
219 bus_release_resource(dev, SYS_RES_IRQ,
220 rman_get_rid(sc->irq_res), sc->irq_res);
221 sc->irq_res = 0;
|
218 return;
| |
219}
220
221static int
222at91_pio_intr(void *xsc)
223{
224 struct at91_pio_softc *sc = xsc;
225#if 0
226 uint32_t status;
227
| 222}
223
224static int
225at91_pio_intr(void *xsc)
226{
227 struct at91_pio_softc *sc = xsc;
228#if 0
229 uint32_t status;
230
|
228 /* Reading the status also clears the interrupt */
| 231 /* Reading the status also clears the interrupt. */
|
229 status = RD4(sc, PIO_SR);
230 if (status == 0)
231 return;
232 AT91_PIO_LOCK(sc);
233 AT91_PIO_UNLOCK(sc);
234#endif
235 wakeup(sc);
236 return (FILTER_HANDLED);
237}
238
| 232 status = RD4(sc, PIO_SR);
233 if (status == 0)
234 return;
235 AT91_PIO_LOCK(sc);
236 AT91_PIO_UNLOCK(sc);
237#endif
238 wakeup(sc);
239 return (FILTER_HANDLED);
240}
241
|
239static int
| 242static int
|
240at91_pio_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
241{
242 struct at91_pio_softc *sc;
243
244 sc = CDEV2SOFTC(dev);
245 AT91_PIO_LOCK(sc);
246 if (!(sc->flags & OPENED)) {
247 sc->flags |= OPENED;
248#if 0
| 243at91_pio_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
244{
245 struct at91_pio_softc *sc;
246
247 sc = CDEV2SOFTC(dev);
248 AT91_PIO_LOCK(sc);
249 if (!(sc->flags & OPENED)) {
250 sc->flags |= OPENED;
251#if 0
|
249 // Enable interrupts
| 252 /* Enable interrupts. */
|
250#endif
251 }
252 AT91_PIO_UNLOCK(sc);
| 253#endif
254 }
255 AT91_PIO_UNLOCK(sc);
|
253 return (0);
| 256 return (0);
|
254}
255
256static int
257at91_pio_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
258{
259 struct at91_pio_softc *sc;
260
261 sc = CDEV2SOFTC(dev);
262 AT91_PIO_LOCK(sc);
263 sc->flags &= ~OPENED;
264#if 0
| 257}
258
259static int
260at91_pio_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
261{
262 struct at91_pio_softc *sc;
263
264 sc = CDEV2SOFTC(dev);
265 AT91_PIO_LOCK(sc);
266 sc->flags &= ~OPENED;
267#if 0
|
265 // Disable interrupts
| 268 /* Disable interrupts. */
|
266#endif
267 AT91_PIO_UNLOCK(sc);
268 return (0);
269}
270
271static int
272at91_pio_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
273 struct thread *td)
274{
| 269#endif
270 AT91_PIO_UNLOCK(sc);
271 return (0);
272}
273
274static int
275at91_pio_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
276 struct thread *td)
277{
|
| 278
|
275 return (ENXIO);
276}
277
278/*
279 * The following functions are called early in the boot process, so
280 * don't use bus_space, as that isn't yet available when we need to use
281 * them.
282 */
| 279 return (ENXIO);
280}
281
282/*
283 * The following functions are called early in the boot process, so
284 * don't use bus_space, as that isn't yet available when we need to use
285 * them.
286 */
|
| 287
|
283void
284at91_pio_use_periph_a(uint32_t pio, uint32_t periph_a_mask, int use_pullup)
285{
286 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
287
288 PIO[PIO_ASR / 4] = periph_a_mask;
289 PIO[PIO_PDR / 4] = periph_a_mask;
290 if (use_pullup)
291 PIO[PIO_PUER / 4] = periph_a_mask;
292 else
293 PIO[PIO_PUDR / 4] = periph_a_mask;
294}
295
296void
297at91_pio_use_periph_b(uint32_t pio, uint32_t periph_b_mask, int use_pullup)
298{
299 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
300
301 PIO[PIO_BSR / 4] = periph_b_mask;
302 PIO[PIO_PDR / 4] = periph_b_mask;
303 if (use_pullup)
304 PIO[PIO_PUER / 4] = periph_b_mask;
305 else
306 PIO[PIO_PUDR / 4] = periph_b_mask;
307}
308
309void
310at91_pio_use_gpio(uint32_t pio, uint32_t gpio_mask)
311{
312 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
313
314 PIO[PIO_PER / 4] = gpio_mask;
315}
316
317void
318at91_pio_gpio_input(uint32_t pio, uint32_t input_enable_mask)
319{
320 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
321
322 PIO[PIO_ODR / 4] = input_enable_mask;
323}
324
325void
326at91_pio_gpio_output(uint32_t pio, uint32_t output_enable_mask, int use_pullup)
327{
328 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
329
330 PIO[PIO_OER / 4] = output_enable_mask;
331 if (use_pullup)
332 PIO[PIO_PUER / 4] = output_enable_mask;
333 else
334 PIO[PIO_PUDR / 4] = output_enable_mask;
335}
336
337void
338at91_pio_gpio_set(uint32_t pio, uint32_t data_mask)
339{
340 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
341
342 PIO[PIO_SODR / 4] = data_mask;
343}
344
345void
346at91_pio_gpio_clear(uint32_t pio, uint32_t data_mask)
347{
348 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
349
350 PIO[PIO_CODR / 4] = data_mask;
351}
352
353uint8_t
354at91_pio_gpio_get(uint32_t pio, uint32_t data_mask)
355{
356 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
357
358 data_mask &= PIO[PIO_PDSR / 4];
359
360 return (data_mask ? 1 : 0);
361}
362
363void
364at91_pio_gpio_set_deglitch(uint32_t pio, uint32_t data_mask, int use_deglitch)
365{
366 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
367
368 if (use_deglitch)
369 PIO[PIO_IFER / 4] = data_mask;
370 else
371 PIO[PIO_IFDR / 4] = data_mask;
| 288void
289at91_pio_use_periph_a(uint32_t pio, uint32_t periph_a_mask, int use_pullup)
290{
291 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
292
293 PIO[PIO_ASR / 4] = periph_a_mask;
294 PIO[PIO_PDR / 4] = periph_a_mask;
295 if (use_pullup)
296 PIO[PIO_PUER / 4] = periph_a_mask;
297 else
298 PIO[PIO_PUDR / 4] = periph_a_mask;
299}
300
301void
302at91_pio_use_periph_b(uint32_t pio, uint32_t periph_b_mask, int use_pullup)
303{
304 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
305
306 PIO[PIO_BSR / 4] = periph_b_mask;
307 PIO[PIO_PDR / 4] = periph_b_mask;
308 if (use_pullup)
309 PIO[PIO_PUER / 4] = periph_b_mask;
310 else
311 PIO[PIO_PUDR / 4] = periph_b_mask;
312}
313
314void
315at91_pio_use_gpio(uint32_t pio, uint32_t gpio_mask)
316{
317 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
318
319 PIO[PIO_PER / 4] = gpio_mask;
320}
321
322void
323at91_pio_gpio_input(uint32_t pio, uint32_t input_enable_mask)
324{
325 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
326
327 PIO[PIO_ODR / 4] = input_enable_mask;
328}
329
330void
331at91_pio_gpio_output(uint32_t pio, uint32_t output_enable_mask, int use_pullup)
332{
333 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
334
335 PIO[PIO_OER / 4] = output_enable_mask;
336 if (use_pullup)
337 PIO[PIO_PUER / 4] = output_enable_mask;
338 else
339 PIO[PIO_PUDR / 4] = output_enable_mask;
340}
341
342void
343at91_pio_gpio_set(uint32_t pio, uint32_t data_mask)
344{
345 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
346
347 PIO[PIO_SODR / 4] = data_mask;
348}
349
350void
351at91_pio_gpio_clear(uint32_t pio, uint32_t data_mask)
352{
353 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
354
355 PIO[PIO_CODR / 4] = data_mask;
356}
357
358uint8_t
359at91_pio_gpio_get(uint32_t pio, uint32_t data_mask)
360{
361 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
362
363 data_mask &= PIO[PIO_PDSR / 4];
364
365 return (data_mask ? 1 : 0);
366}
367
368void
369at91_pio_gpio_set_deglitch(uint32_t pio, uint32_t data_mask, int use_deglitch)
370{
371 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
372
373 if (use_deglitch)
374 PIO[PIO_IFER / 4] = data_mask;
375 else
376 PIO[PIO_IFDR / 4] = data_mask;
|
372 return;
| |
373}
374
375void
| 377}
378
379void
|
376at91_pio_gpio_set_interrupt(uint32_t pio, uint32_t data_mask,
| 380at91_pio_gpio_set_interrupt(uint32_t pio, uint32_t data_mask,
|
377 int enable_interrupt)
378{
379 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
380
381 if (enable_interrupt)
382 PIO[PIO_IER / 4] = data_mask;
383 else
384 PIO[PIO_IDR / 4] = data_mask;
| 381 int enable_interrupt)
382{
383 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
384
385 if (enable_interrupt)
386 PIO[PIO_IER / 4] = data_mask;
387 else
388 PIO[PIO_IDR / 4] = data_mask;
|
385 return;
| |
386}
387
388uint32_t
389at91_pio_gpio_clear_interrupt(uint32_t pio)
390{
391 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
| 389}
390
391uint32_t
392at91_pio_gpio_clear_interrupt(uint32_t pio)
393{
394 uint32_t *PIO = (uint32_t *)(AT91_BASE + pio);
|
392 /* reading this register will clear the interrupts */
| 395
396 /* Reading this register will clear the interrupts. */
|
393 return (PIO[PIO_ISR / 4]);
394}
395
396static device_method_t at91_pio_methods[] = {
397 /* Device interface */
398 DEVMETHOD(device_probe, at91_pio_probe),
399 DEVMETHOD(device_attach, at91_pio_attach),
400 DEVMETHOD(device_detach, at91_pio_detach),
401
| 397 return (PIO[PIO_ISR / 4]);
398}
399
400static device_method_t at91_pio_methods[] = {
401 /* Device interface */
402 DEVMETHOD(device_probe, at91_pio_probe),
403 DEVMETHOD(device_attach, at91_pio_attach),
404 DEVMETHOD(device_detach, at91_pio_detach),
405
|
402 { 0, 0 }
| 406 DEVMETHOD_END
|
403};
404
405static driver_t at91_pio_driver = {
406 "at91_pio",
407 at91_pio_methods,
408 sizeof(struct at91_pio_softc),
409};
410
| 407};
408
409static driver_t at91_pio_driver = {
410 "at91_pio",
411 at91_pio_methods,
412 sizeof(struct at91_pio_softc),
413};
414
|
411DRIVER_MODULE(at91_pio, atmelarm, at91_pio_driver, at91_pio_devclass, 0, 0);
| 415DRIVER_MODULE(at91_pio, atmelarm, at91_pio_driver, at91_pio_devclass, NULL,
416 NULL);
|
| |