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>
| 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>
|
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 */
68static void rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc,
69 struct gpio_pin *pin, uint32_t flags);
70
71/*
72 * Driver stuff
73 */
74static int rt305x_gpio_probe(device_t dev);
75static int rt305x_gpio_attach(device_t dev);
76static int rt305x_gpio_detach(device_t dev);
77static int rt305x_gpio_intr(void *arg);
78
79int rt305x_get_int_mask (device_t);
80void rt305x_set_int_mask (device_t, uint32_t);
81int rt305x_get_int_status(device_t);
82void rt305x_set_int_status(device_t, uint32_t);
83
84/*
85 * GPIO interface
86 */
87static int rt305x_gpio_pin_max(device_t dev, int *maxpin);
88static int rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps);
89static int rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t
90 *flags);
91static int rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name);
92static int rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags);
93static int rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value);
94static int rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val);
95static int rt305x_gpio_pin_toggle(device_t dev, uint32_t pin);
96
97static void
98rt305x_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
160static int
161rt305x_gpio_pin_max(device_t dev, int *maxpin)
162{
163
164 *maxpin = NGPIO - 1;
165 return (0);
166}
167
168static int
169rt305x_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
189static int
190rt305x_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
210static int
211rt305x_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
231static int
232rt305x_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 /* Check for unwanted flags. */
246 if ((flags & sc->gpio_pins[i].gp_caps) != flags)
247 return (EINVAL);
248
249 /* Can't mix input/output together */
250 if ((flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) ==
251 (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT))
252 return (EINVAL);
253
254 rt305x_gpio_pin_configure(sc, &sc->gpio_pins[i], flags);
255
256
257 return (0);
258}
259
260static int
261rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
262{
263 struct rt305x_gpio_softc *sc = device_get_softc(dev);
264 int i;
265
266 for (i = 0; i < sc->gpio_npins; i++) {
267 if (sc->gpio_pins[i].gp_pin == pin)
268 break;
269 }
270
271 if (i >= sc->gpio_npins)
272 return (EINVAL);
273
274
275 GPIO_LOCK(sc);
276 if (value) GPIO_BIT_SET(sc, i, DATA);
277 else GPIO_BIT_CLR(sc, i, DATA);
278 GPIO_UNLOCK(sc);
279
280 return (0);
281}
282
283static int
284rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val)
285{
286 struct rt305x_gpio_softc *sc = device_get_softc(dev);
287 int i;
288
289 for (i = 0; i < sc->gpio_npins; i++) {
290 if (sc->gpio_pins[i].gp_pin == pin)
291 break;
292 }
293
294 if (i >= sc->gpio_npins)
295 return (EINVAL);
296
297 GPIO_LOCK(sc);
298 *val = GPIO_BIT_GET(sc, i, DATA);
299 GPIO_UNLOCK(sc);
300
301 return (0);
302}
303
304static int
305rt305x_gpio_pin_toggle(device_t dev, uint32_t pin)
306{
307 int i;
308 struct rt305x_gpio_softc *sc = device_get_softc(dev);
309
310 for (i = 0; i < sc->gpio_npins; i++) {
311 if (sc->gpio_pins[i].gp_pin == pin)
312 break;
313 }
314
315 if (i >= sc->gpio_npins)
316 return (EINVAL);
317
318 GPIO_LOCK(sc);
319 GPIO_BIT_SET(sc, i, TOG);
320 GPIO_UNLOCK(sc);
321
322 return (0);
323}
324
325static int
326rt305x_gpio_intr(void *arg)
327{
328 struct rt305x_gpio_softc *sc = arg;
329#ifdef notyet
330 uint32_t i;
331#endif
332 uint64_t input, value;
333#ifdef notyet
334 uint64_t reset_pin;
335 char notify[16];
336 char pinname[6];
337#endif
338
339 /* Read all reported pins */
340 input = GPIO_READ_ALL(sc, INT);
341 /* Clear int status */
342 GPIO_WRITE_ALL(sc, INT, input);
343 /* Clear report for OUTs */
344 input &= ~GPIO_READ_ALL(sc, DIR);
345 value = input & GPIO_READ_ALL(sc, DATA);
346
347 if (!input) goto intr_done;
348
349#ifdef notyet
350 /* if reset_gpio and this pin is input */
351 if (sc->reset_gpio >= 0 && (input & (1 << sc->reset_gpio))) {
352 /* get reset_gpio pin value */
353 reset_pin = (value & (1 << sc->reset_gpio))?1:0;
354 if ( sc->reset_gpio_last != reset_pin ) {
355 /*
356 * if now reset is high, check how long
357 * and do reset if less than 2 seconds
358 */
359 if ( reset_pin &&
360 (time_uptime - sc->reset_gpio_ontime) < 2 )
361 shutdown_nice(0);
362
363 sc->reset_gpio_last = reset_pin;
364 sc->reset_gpio_ontime = time_uptime;
365 }
366 }
367
368 for ( i = 0; i < NGPIO; i ++ )
369 {
370 /* Next if output pin */
371 if ( !(( input >> i) & 1) ) continue;
372
373 if ( (((value & input) >> i) & 1) != sc->gpio_pins[i].gp_last )
374 {
375 /* !system=GPIO subsystem=pin7 type=PIN_HIGH period=3 */
376 snprintf(notify , sizeof(notify ), "period=%d",
377 (uint32_t)time_uptime - sc->gpio_pins[i].gp_time);
378 snprintf(pinname, sizeof(pinname), "pin%02d", i);
379 devctl_notify("GPIO", pinname,
380 (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
381 notify);
382 printf("GPIO[%s] %s %s\n", pinname,
383 (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
384 notify);
385 sc->gpio_pins[i].gp_last = ((value & input) >> i) & 1;
386 sc->gpio_pins[i].gp_time = time_uptime;
387 }
388
389 }
390#endif
391
392intr_done:
393 return (FILTER_HANDLED);
394}
395
396static int
397rt305x_gpio_probe(device_t dev)
398{
399 device_set_desc(dev, "RT305X GPIO driver");
400 return (0);
401}
402
403static uint64_t
404rt305x_gpio_init(device_t dev)
405{
406 uint64_t avl = ~0ULL;
407 uint32_t gmode = rt305x_sysctl_get(SYSCTL_GPIOMODE);
408 if (!(gmode & SYSCTL_GPIOMODE_RGMII_GPIO_MODE))
409 avl &= ~RGMII_GPIO_MODE_MASK;
410 if (!(gmode & SYSCTL_GPIOMODE_SDRAM_GPIO_MODE))
411 avl &= ~SDRAM_GPIO_MODE_MASK;
412 if (!(gmode & SYSCTL_GPIOMODE_MDIO_GPIO_MODE))
413 avl &= ~MDIO_GPIO_MODE_MASK;
414 if (!(gmode & SYSCTL_GPIOMODE_JTAG_GPIO_MODE))
415 avl &= ~JTAG_GPIO_MODE_MASK;
416 if (!(gmode & SYSCTL_GPIOMODE_UARTL_GPIO_MODE))
417 avl &= ~UARTL_GPIO_MODE_MASK;
418 if (!(gmode & SYSCTL_GPIOMODE_SPI_GPIO_MODE))
419 avl &= ~SPI_GPIO_MODE_MASK;
420 if (!(gmode & SYSCTL_GPIOMODE_I2C_GPIO_MODE))
421 avl &= ~I2C_GPIO_MODE_MASK;
422 if ((gmode & SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO) !=
423 SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO)
424 avl &= ~I2C_GPIO_MODE_MASK;
425/* D-Link DAP-1350 Board have
426 * MDIO_GPIO_MODE
427 * UARTF_GPIO_MODE
428 * SPI_GPIO_MODE
429 * I2C_GPIO_MODE
430 * So we have
431 * 00000001 10000000 01111111 11111110
432*/
433 return (avl);
434
435}
436
437#define DAP1350_RESET_GPIO 10
438
439static int
440rt305x_gpio_attach(device_t dev)
441{
442 struct rt305x_gpio_softc *sc = device_get_softc(dev);
443 int error = 0, i;
444 uint64_t avlpins = 0;
445 sc->reset_gpio = DAP1350_RESET_GPIO;
446
447 KASSERT((device_get_unit(dev) == 0),
448 ("rt305x_gpio_gpio: Only one gpio module supported"));
449
450 mtx_init(&sc->gpio_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
451
452 /* Map control/status registers. */
453 sc->gpio_mem_rid = 0;
454 sc->gpio_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
455 &sc->gpio_mem_rid, RF_ACTIVE);
456
457 if (sc->gpio_mem_res == NULL) {
458 device_printf(dev, "couldn't map memory\n");
459 error = ENXIO;
460 rt305x_gpio_detach(dev);
461 return(error);
462 }
463
464 if ((sc->gpio_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
465 &sc->gpio_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
466 device_printf(dev, "unable to allocate IRQ resource\n");
467 return (ENXIO);
468 }
469
470 if ((bus_setup_intr(dev, sc->gpio_irq_res, INTR_TYPE_MISC,
471 /* rt305x_gpio_filter, */
472 rt305x_gpio_intr, NULL, sc, &sc->gpio_ih))) {
473 device_printf(dev,
474 "WARNING: unable to register interrupt handler\n");
475 return (ENXIO);
476 }
477
478 sc->dev = dev;
479 avlpins = rt305x_gpio_init(dev);
480
481 /* Configure all pins as input */
482 /* disable interrupts for all pins */
483 /* TODO */
484
485 sc->gpio_npins = NGPIO;
486 resource_int_value(device_get_name(dev), device_get_unit(dev),
487 "pins", &sc->gpio_npins);
488
489 for (i = 0; i < sc->gpio_npins; i++) {
490 sc->gpio_pins[i].gp_pin = i;
491 sc->gpio_pins[i].gp_caps = DEFAULT_CAPS;
492 sc->gpio_pins[i].gp_flags = 0;
493 }
494
495 /* Setup reset pin interrupt */
496 if (TUNABLE_INT_FETCH("reset_gpio", &sc->reset_gpio)) {
497 device_printf(dev, "\tHinted reset_gpio %d\n", sc->reset_gpio);
498 }
499#ifdef notyet
500 if (sc->reset_gpio != -1) {
501 rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
502 GPIO_PIN_INPUT|GPIO_PIN_INVOUT|
503 GPIO_PIN_INVOUT|GPIO_PIN_REPORT);
504 device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
505 }
506#else
507 if (sc->reset_gpio != -1) {
508 rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
509 GPIO_PIN_INPUT|GPIO_PIN_INVOUT);
510 device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
511 }
512#endif
513
| 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 */
68static void rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc,
69 struct gpio_pin *pin, uint32_t flags);
70
71/*
72 * Driver stuff
73 */
74static int rt305x_gpio_probe(device_t dev);
75static int rt305x_gpio_attach(device_t dev);
76static int rt305x_gpio_detach(device_t dev);
77static int rt305x_gpio_intr(void *arg);
78
79int rt305x_get_int_mask (device_t);
80void rt305x_set_int_mask (device_t, uint32_t);
81int rt305x_get_int_status(device_t);
82void rt305x_set_int_status(device_t, uint32_t);
83
84/*
85 * GPIO interface
86 */
87static int rt305x_gpio_pin_max(device_t dev, int *maxpin);
88static int rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps);
89static int rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t
90 *flags);
91static int rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name);
92static int rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags);
93static int rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value);
94static int rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val);
95static int rt305x_gpio_pin_toggle(device_t dev, uint32_t pin);
96
97static void
98rt305x_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
160static int
161rt305x_gpio_pin_max(device_t dev, int *maxpin)
162{
163
164 *maxpin = NGPIO - 1;
165 return (0);
166}
167
168static int
169rt305x_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
189static int
190rt305x_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
210static int
211rt305x_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
231static int
232rt305x_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 /* Check for unwanted flags. */
246 if ((flags & sc->gpio_pins[i].gp_caps) != flags)
247 return (EINVAL);
248
249 /* Can't mix input/output together */
250 if ((flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) ==
251 (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT))
252 return (EINVAL);
253
254 rt305x_gpio_pin_configure(sc, &sc->gpio_pins[i], flags);
255
256
257 return (0);
258}
259
260static int
261rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
262{
263 struct rt305x_gpio_softc *sc = device_get_softc(dev);
264 int i;
265
266 for (i = 0; i < sc->gpio_npins; i++) {
267 if (sc->gpio_pins[i].gp_pin == pin)
268 break;
269 }
270
271 if (i >= sc->gpio_npins)
272 return (EINVAL);
273
274
275 GPIO_LOCK(sc);
276 if (value) GPIO_BIT_SET(sc, i, DATA);
277 else GPIO_BIT_CLR(sc, i, DATA);
278 GPIO_UNLOCK(sc);
279
280 return (0);
281}
282
283static int
284rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val)
285{
286 struct rt305x_gpio_softc *sc = device_get_softc(dev);
287 int i;
288
289 for (i = 0; i < sc->gpio_npins; i++) {
290 if (sc->gpio_pins[i].gp_pin == pin)
291 break;
292 }
293
294 if (i >= sc->gpio_npins)
295 return (EINVAL);
296
297 GPIO_LOCK(sc);
298 *val = GPIO_BIT_GET(sc, i, DATA);
299 GPIO_UNLOCK(sc);
300
301 return (0);
302}
303
304static int
305rt305x_gpio_pin_toggle(device_t dev, uint32_t pin)
306{
307 int i;
308 struct rt305x_gpio_softc *sc = device_get_softc(dev);
309
310 for (i = 0; i < sc->gpio_npins; i++) {
311 if (sc->gpio_pins[i].gp_pin == pin)
312 break;
313 }
314
315 if (i >= sc->gpio_npins)
316 return (EINVAL);
317
318 GPIO_LOCK(sc);
319 GPIO_BIT_SET(sc, i, TOG);
320 GPIO_UNLOCK(sc);
321
322 return (0);
323}
324
325static int
326rt305x_gpio_intr(void *arg)
327{
328 struct rt305x_gpio_softc *sc = arg;
329#ifdef notyet
330 uint32_t i;
331#endif
332 uint64_t input, value;
333#ifdef notyet
334 uint64_t reset_pin;
335 char notify[16];
336 char pinname[6];
337#endif
338
339 /* Read all reported pins */
340 input = GPIO_READ_ALL(sc, INT);
341 /* Clear int status */
342 GPIO_WRITE_ALL(sc, INT, input);
343 /* Clear report for OUTs */
344 input &= ~GPIO_READ_ALL(sc, DIR);
345 value = input & GPIO_READ_ALL(sc, DATA);
346
347 if (!input) goto intr_done;
348
349#ifdef notyet
350 /* if reset_gpio and this pin is input */
351 if (sc->reset_gpio >= 0 && (input & (1 << sc->reset_gpio))) {
352 /* get reset_gpio pin value */
353 reset_pin = (value & (1 << sc->reset_gpio))?1:0;
354 if ( sc->reset_gpio_last != reset_pin ) {
355 /*
356 * if now reset is high, check how long
357 * and do reset if less than 2 seconds
358 */
359 if ( reset_pin &&
360 (time_uptime - sc->reset_gpio_ontime) < 2 )
361 shutdown_nice(0);
362
363 sc->reset_gpio_last = reset_pin;
364 sc->reset_gpio_ontime = time_uptime;
365 }
366 }
367
368 for ( i = 0; i < NGPIO; i ++ )
369 {
370 /* Next if output pin */
371 if ( !(( input >> i) & 1) ) continue;
372
373 if ( (((value & input) >> i) & 1) != sc->gpio_pins[i].gp_last )
374 {
375 /* !system=GPIO subsystem=pin7 type=PIN_HIGH period=3 */
376 snprintf(notify , sizeof(notify ), "period=%d",
377 (uint32_t)time_uptime - sc->gpio_pins[i].gp_time);
378 snprintf(pinname, sizeof(pinname), "pin%02d", i);
379 devctl_notify("GPIO", pinname,
380 (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
381 notify);
382 printf("GPIO[%s] %s %s\n", pinname,
383 (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
384 notify);
385 sc->gpio_pins[i].gp_last = ((value & input) >> i) & 1;
386 sc->gpio_pins[i].gp_time = time_uptime;
387 }
388
389 }
390#endif
391
392intr_done:
393 return (FILTER_HANDLED);
394}
395
396static int
397rt305x_gpio_probe(device_t dev)
398{
399 device_set_desc(dev, "RT305X GPIO driver");
400 return (0);
401}
402
403static uint64_t
404rt305x_gpio_init(device_t dev)
405{
406 uint64_t avl = ~0ULL;
407 uint32_t gmode = rt305x_sysctl_get(SYSCTL_GPIOMODE);
408 if (!(gmode & SYSCTL_GPIOMODE_RGMII_GPIO_MODE))
409 avl &= ~RGMII_GPIO_MODE_MASK;
410 if (!(gmode & SYSCTL_GPIOMODE_SDRAM_GPIO_MODE))
411 avl &= ~SDRAM_GPIO_MODE_MASK;
412 if (!(gmode & SYSCTL_GPIOMODE_MDIO_GPIO_MODE))
413 avl &= ~MDIO_GPIO_MODE_MASK;
414 if (!(gmode & SYSCTL_GPIOMODE_JTAG_GPIO_MODE))
415 avl &= ~JTAG_GPIO_MODE_MASK;
416 if (!(gmode & SYSCTL_GPIOMODE_UARTL_GPIO_MODE))
417 avl &= ~UARTL_GPIO_MODE_MASK;
418 if (!(gmode & SYSCTL_GPIOMODE_SPI_GPIO_MODE))
419 avl &= ~SPI_GPIO_MODE_MASK;
420 if (!(gmode & SYSCTL_GPIOMODE_I2C_GPIO_MODE))
421 avl &= ~I2C_GPIO_MODE_MASK;
422 if ((gmode & SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO) !=
423 SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO)
424 avl &= ~I2C_GPIO_MODE_MASK;
425/* D-Link DAP-1350 Board have
426 * MDIO_GPIO_MODE
427 * UARTF_GPIO_MODE
428 * SPI_GPIO_MODE
429 * I2C_GPIO_MODE
430 * So we have
431 * 00000001 10000000 01111111 11111110
432*/
433 return (avl);
434
435}
436
437#define DAP1350_RESET_GPIO 10
438
439static int
440rt305x_gpio_attach(device_t dev)
441{
442 struct rt305x_gpio_softc *sc = device_get_softc(dev);
443 int error = 0, i;
444 uint64_t avlpins = 0;
445 sc->reset_gpio = DAP1350_RESET_GPIO;
446
447 KASSERT((device_get_unit(dev) == 0),
448 ("rt305x_gpio_gpio: Only one gpio module supported"));
449
450 mtx_init(&sc->gpio_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
451
452 /* Map control/status registers. */
453 sc->gpio_mem_rid = 0;
454 sc->gpio_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
455 &sc->gpio_mem_rid, RF_ACTIVE);
456
457 if (sc->gpio_mem_res == NULL) {
458 device_printf(dev, "couldn't map memory\n");
459 error = ENXIO;
460 rt305x_gpio_detach(dev);
461 return(error);
462 }
463
464 if ((sc->gpio_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
465 &sc->gpio_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
466 device_printf(dev, "unable to allocate IRQ resource\n");
467 return (ENXIO);
468 }
469
470 if ((bus_setup_intr(dev, sc->gpio_irq_res, INTR_TYPE_MISC,
471 /* rt305x_gpio_filter, */
472 rt305x_gpio_intr, NULL, sc, &sc->gpio_ih))) {
473 device_printf(dev,
474 "WARNING: unable to register interrupt handler\n");
475 return (ENXIO);
476 }
477
478 sc->dev = dev;
479 avlpins = rt305x_gpio_init(dev);
480
481 /* Configure all pins as input */
482 /* disable interrupts for all pins */
483 /* TODO */
484
485 sc->gpio_npins = NGPIO;
486 resource_int_value(device_get_name(dev), device_get_unit(dev),
487 "pins", &sc->gpio_npins);
488
489 for (i = 0; i < sc->gpio_npins; i++) {
490 sc->gpio_pins[i].gp_pin = i;
491 sc->gpio_pins[i].gp_caps = DEFAULT_CAPS;
492 sc->gpio_pins[i].gp_flags = 0;
493 }
494
495 /* Setup reset pin interrupt */
496 if (TUNABLE_INT_FETCH("reset_gpio", &sc->reset_gpio)) {
497 device_printf(dev, "\tHinted reset_gpio %d\n", sc->reset_gpio);
498 }
499#ifdef notyet
500 if (sc->reset_gpio != -1) {
501 rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
502 GPIO_PIN_INPUT|GPIO_PIN_INVOUT|
503 GPIO_PIN_INVOUT|GPIO_PIN_REPORT);
504 device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
505 }
506#else
507 if (sc->reset_gpio != -1) {
508 rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
509 GPIO_PIN_INPUT|GPIO_PIN_INVOUT);
510 device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
511 }
512#endif
513
|
518 return (bus_generic_attach(dev));
519}
520
521static int
522rt305x_gpio_detach(device_t dev)
523{
524 struct rt305x_gpio_softc *sc = device_get_softc(dev);
525
526 KASSERT(mtx_initialized(&sc->gpio_mtx), ("gpio mutex not initialized"));
527
528 bus_generic_detach(dev);
529
530 if (sc->gpio_mem_res)
531 bus_release_resource(dev, SYS_RES_MEMORY, sc->gpio_mem_rid,
532 sc->gpio_mem_res);
533
534 mtx_destroy(&sc->gpio_mtx);
535
536 return(0);
537}
538
539#ifdef notyet
540static struct resource *
541rt305x_gpio_alloc_resource(device_t bus, device_t child, int type, int *rid,
542 u_long start, u_long end, u_long count, u_int flags)
543{
544 struct obio_softc *sc = device_get_softc(bus);
545 struct resource *rv;
546 struct rman *rm;
547
548 switch (type) {
549 case SYS_RES_GPIO:
550 rm = &sc->gpio_rman;
551 break;
552 default:
553 printf("%s: unknown resource type %d\n", __func__, type);
554 return (0);
555 }
556
557 rv = rman_reserve_resource(rm, start, end, count, flags, child);
558 if (rv == 0) {
559 printf("%s: could not reserve resource\n", __func__);
560 return (0);
561 }
562
563 rman_set_rid(rv, *rid);
564
565 return (rv);
566}
567
568static int
569rt305x_gpio_activate_resource(device_t bus, device_t child, int type, int rid,
570 struct resource *r)
571{
572
573 return (rman_activate_resource(r));
574}
575
576static int
577rt305x_gpio_deactivate_resource(device_t bus, device_t child, int type, int rid,
578 struct resource *r)
579{
580
581 return (rman_deactivate_resource(r));
582}
583
584static int
585rt305x_gpio_release_resource(device_t dev, device_t child, int type,
586 int rid, struct resource *r)
587{
588 rman_release_resource(r);
589 return (0);
590}
591#endif
592
593static device_method_t rt305x_gpio_methods[] = {
594 DEVMETHOD(device_probe, rt305x_gpio_probe),
595 DEVMETHOD(device_attach, rt305x_gpio_attach),
596 DEVMETHOD(device_detach, rt305x_gpio_detach),
597
598 /* GPIO protocol */
599 DEVMETHOD(gpio_pin_max, rt305x_gpio_pin_max),
600 DEVMETHOD(gpio_pin_getname, rt305x_gpio_pin_getname),
601 DEVMETHOD(gpio_pin_getflags, rt305x_gpio_pin_getflags),
602 DEVMETHOD(gpio_pin_getcaps, rt305x_gpio_pin_getcaps),
603 DEVMETHOD(gpio_pin_setflags, rt305x_gpio_pin_setflags),
604 DEVMETHOD(gpio_pin_get, rt305x_gpio_pin_get),
605 DEVMETHOD(gpio_pin_set, rt305x_gpio_pin_set),
606 DEVMETHOD(gpio_pin_toggle, rt305x_gpio_pin_toggle),
607 {0, 0},
608};
609
610static driver_t rt305x_gpio_driver = {
611 "gpio",
612 rt305x_gpio_methods,
613 sizeof(struct rt305x_gpio_softc),
614};
615static devclass_t rt305x_gpio_devclass;
616
617DRIVER_MODULE(rt305x_gpio, obio, rt305x_gpio_driver,
618 rt305x_gpio_devclass, 0, 0);
| 517 return (bus_generic_attach(dev));
518}
519
520static int
521rt305x_gpio_detach(device_t dev)
522{
523 struct rt305x_gpio_softc *sc = device_get_softc(dev);
524
525 KASSERT(mtx_initialized(&sc->gpio_mtx), ("gpio mutex not initialized"));
526
527 bus_generic_detach(dev);
528
529 if (sc->gpio_mem_res)
530 bus_release_resource(dev, SYS_RES_MEMORY, sc->gpio_mem_rid,
531 sc->gpio_mem_res);
532
533 mtx_destroy(&sc->gpio_mtx);
534
535 return(0);
536}
537
538#ifdef notyet
539static struct resource *
540rt305x_gpio_alloc_resource(device_t bus, device_t child, int type, int *rid,
541 u_long start, u_long end, u_long count, u_int flags)
542{
543 struct obio_softc *sc = device_get_softc(bus);
544 struct resource *rv;
545 struct rman *rm;
546
547 switch (type) {
548 case SYS_RES_GPIO:
549 rm = &sc->gpio_rman;
550 break;
551 default:
552 printf("%s: unknown resource type %d\n", __func__, type);
553 return (0);
554 }
555
556 rv = rman_reserve_resource(rm, start, end, count, flags, child);
557 if (rv == 0) {
558 printf("%s: could not reserve resource\n", __func__);
559 return (0);
560 }
561
562 rman_set_rid(rv, *rid);
563
564 return (rv);
565}
566
567static int
568rt305x_gpio_activate_resource(device_t bus, device_t child, int type, int rid,
569 struct resource *r)
570{
571
572 return (rman_activate_resource(r));
573}
574
575static int
576rt305x_gpio_deactivate_resource(device_t bus, device_t child, int type, int rid,
577 struct resource *r)
578{
579
580 return (rman_deactivate_resource(r));
581}
582
583static int
584rt305x_gpio_release_resource(device_t dev, device_t child, int type,
585 int rid, struct resource *r)
586{
587 rman_release_resource(r);
588 return (0);
589}
590#endif
591
592static device_method_t rt305x_gpio_methods[] = {
593 DEVMETHOD(device_probe, rt305x_gpio_probe),
594 DEVMETHOD(device_attach, rt305x_gpio_attach),
595 DEVMETHOD(device_detach, rt305x_gpio_detach),
596
597 /* GPIO protocol */
598 DEVMETHOD(gpio_pin_max, rt305x_gpio_pin_max),
599 DEVMETHOD(gpio_pin_getname, rt305x_gpio_pin_getname),
600 DEVMETHOD(gpio_pin_getflags, rt305x_gpio_pin_getflags),
601 DEVMETHOD(gpio_pin_getcaps, rt305x_gpio_pin_getcaps),
602 DEVMETHOD(gpio_pin_setflags, rt305x_gpio_pin_setflags),
603 DEVMETHOD(gpio_pin_get, rt305x_gpio_pin_get),
604 DEVMETHOD(gpio_pin_set, rt305x_gpio_pin_set),
605 DEVMETHOD(gpio_pin_toggle, rt305x_gpio_pin_toggle),
606 {0, 0},
607};
608
609static driver_t rt305x_gpio_driver = {
610 "gpio",
611 rt305x_gpio_methods,
612 sizeof(struct rt305x_gpio_softc),
613};
614static devclass_t rt305x_gpio_devclass;
615
616DRIVER_MODULE(rt305x_gpio, obio, rt305x_gpio_driver,
617 rt305x_gpio_devclass, 0, 0);
|