1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
|
/*
* Copyright (c) 2006-2026, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2026-07-31 RTT the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#define DBG_TAG "drv.ra.extirq"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#include <drivers/core/dm.h>
#include <drivers/ofw.h>
#include <drivers/ofw_irq.h>
#include <drivers/pic.h>
#include <drivers/platform.h>
#include <hal_data.h>
#include "drv_external_irq.h"
#ifdef R_ICU_H
#define RA_EXTERNAL_IRQ_MAX_CHANNELS 32
struct ra_external_irq
{
struct rt_pic parent;
const external_irq_instance_t *fsp;
external_irq_cfg_t cfg;
int irq;
rt_uint8_t channel;
rt_uint8_t owner_port;
rt_uint8_t owner_pin;
rt_bool_t acquired;
rt_bool_t opened;
rt_bool_t enabled;
};
static struct ra_external_irq *ra_external_irqs[RA_EXTERNAL_IRQ_MAX_CHANNELS];
#define RA_EXTERNAL_IRQ_INSTANCE(_channel) \
[_channel] = &g_external_irq##_channel
static const external_irq_instance_t * const
ra_external_irq_instances[RA_EXTERNAL_IRQ_MAX_CHANNELS] = {
#if defined(VECTOR_NUMBER_ICU_IRQ0) || defined(VECTOR_NUMBER_IRQ0)
RA_EXTERNAL_IRQ_INSTANCE(0),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ1) || defined(VECTOR_NUMBER_IRQ1)
RA_EXTERNAL_IRQ_INSTANCE(1),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ2) || defined(VECTOR_NUMBER_IRQ2)
RA_EXTERNAL_IRQ_INSTANCE(2),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ3) || defined(VECTOR_NUMBER_IRQ3)
RA_EXTERNAL_IRQ_INSTANCE(3),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ4) || defined(VECTOR_NUMBER_IRQ4)
RA_EXTERNAL_IRQ_INSTANCE(4),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ5) || defined(VECTOR_NUMBER_IRQ5)
RA_EXTERNAL_IRQ_INSTANCE(5),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ6) || defined(VECTOR_NUMBER_IRQ6)
RA_EXTERNAL_IRQ_INSTANCE(6),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ7) || defined(VECTOR_NUMBER_IRQ7)
RA_EXTERNAL_IRQ_INSTANCE(7),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ8) || defined(VECTOR_NUMBER_IRQ8)
RA_EXTERNAL_IRQ_INSTANCE(8),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ9) || defined(VECTOR_NUMBER_IRQ9)
RA_EXTERNAL_IRQ_INSTANCE(9),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ10) || defined(VECTOR_NUMBER_IRQ10)
RA_EXTERNAL_IRQ_INSTANCE(10),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ11) || defined(VECTOR_NUMBER_IRQ11)
RA_EXTERNAL_IRQ_INSTANCE(11),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ12) || defined(VECTOR_NUMBER_IRQ12)
RA_EXTERNAL_IRQ_INSTANCE(12),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ13) || defined(VECTOR_NUMBER_IRQ13)
RA_EXTERNAL_IRQ_INSTANCE(13),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ14) || defined(VECTOR_NUMBER_IRQ14)
RA_EXTERNAL_IRQ_INSTANCE(14),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ15) || defined(VECTOR_NUMBER_IRQ15)
RA_EXTERNAL_IRQ_INSTANCE(15),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ16) || defined(VECTOR_NUMBER_IRQ16)
RA_EXTERNAL_IRQ_INSTANCE(16),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ17) || defined(VECTOR_NUMBER_IRQ17)
RA_EXTERNAL_IRQ_INSTANCE(17),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ18) || defined(VECTOR_NUMBER_IRQ18)
RA_EXTERNAL_IRQ_INSTANCE(18),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ19) || defined(VECTOR_NUMBER_IRQ19)
RA_EXTERNAL_IRQ_INSTANCE(19),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ20) || defined(VECTOR_NUMBER_IRQ20)
RA_EXTERNAL_IRQ_INSTANCE(20),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ21) || defined(VECTOR_NUMBER_IRQ21)
RA_EXTERNAL_IRQ_INSTANCE(21),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ22) || defined(VECTOR_NUMBER_IRQ22)
RA_EXTERNAL_IRQ_INSTANCE(22),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ23) || defined(VECTOR_NUMBER_IRQ23)
RA_EXTERNAL_IRQ_INSTANCE(23),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ24) || defined(VECTOR_NUMBER_IRQ24)
RA_EXTERNAL_IRQ_INSTANCE(24),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ25) || defined(VECTOR_NUMBER_IRQ25)
RA_EXTERNAL_IRQ_INSTANCE(25),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ26) || defined(VECTOR_NUMBER_IRQ26)
RA_EXTERNAL_IRQ_INSTANCE(26),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ27) || defined(VECTOR_NUMBER_IRQ27)
RA_EXTERNAL_IRQ_INSTANCE(27),
#endif
#if defined(VECTOR_NUMBER_ICU_IRQ28) || defined(VECTOR_NUMBER_IRQ28)
RA_EXTERNAL_IRQ_INSTANCE(28),
#endif
};
#undef RA_EXTERNAL_IRQ_INSTANCE
static const external_irq_instance_t *ra_external_irq_instance_get(
rt_uint32_t channel)
{
if (channel < RT_ARRAY_SIZE(ra_external_irq_instances))
{
return ra_external_irq_instances[channel];
}
return RT_NULL;
}
static rt_err_t ra_external_irq_mode_to_fsp(rt_uint8_t mode,
external_irq_trigger_t *trigger)
{
switch (mode)
{
case PIN_IRQ_MODE_RISING:
*trigger = EXTERNAL_IRQ_TRIG_RISING;
break;
case PIN_IRQ_MODE_FALLING:
*trigger = EXTERNAL_IRQ_TRIG_FALLING;
break;
case PIN_IRQ_MODE_RISING_FALLING:
*trigger = EXTERNAL_IRQ_TRIG_BOTH_EDGE;
break;
case PIN_IRQ_MODE_LOW_LEVEL:
*trigger = EXTERNAL_IRQ_TRIG_LEVEL_LOW;
break;
case PIN_IRQ_MODE_HIGH_LEVEL:
*trigger = EXTERNAL_IRQ_TRIG_LEVEL_HIGH;
break;
default:
return -RT_EINVAL;
}
return RT_EOK;
}
static rt_err_t ra_external_irq_trigger_from_ofw(const char *name,
external_irq_trigger_t *trigger)
{
if (!rt_strcmp(name, "falling"))
{
*trigger = EXTERNAL_IRQ_TRIG_FALLING;
}
else if (!rt_strcmp(name, "rising"))
{
*trigger = EXTERNAL_IRQ_TRIG_RISING;
}
else if (!rt_strcmp(name, "both-edges"))
{
*trigger = EXTERNAL_IRQ_TRIG_BOTH_EDGE;
}
else if (!rt_strcmp(name, "low-level"))
{
*trigger = EXTERNAL_IRQ_TRIG_LEVEL_LOW;
}
else
{
return -RT_EINVAL;
}
return RT_EOK;
}
static rt_err_t ra_external_irq_clock_div_from_ofw(rt_uint32_t value,
external_irq_clock_source_div_t *clock_div)
{
switch (value)
{
case 1:
*clock_div = EXTERNAL_IRQ_CLOCK_SOURCE_DIV_1;
break;
case 8:
*clock_div = EXTERNAL_IRQ_CLOCK_SOURCE_DIV_8;
break;
case 32:
*clock_div = EXTERNAL_IRQ_CLOCK_SOURCE_DIV_32;
break;
case 64:
*clock_div = EXTERNAL_IRQ_CLOCK_SOURCE_DIV_64;
break;
default:
return -RT_EINVAL;
}
return RT_EOK;
}
static rt_bool_t ra_external_irq_owner_is(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
return external_irq->acquired && external_irq->owner_port == port &&
external_irq->owner_pin == pin;
}
struct ra_external_irq *ra_external_irq_get(struct rt_ofw_node *np)
{
if (!np)
{
return RT_NULL;
}
if (!rt_ofw_data(np))
{
rt_platform_ofw_request(np);
}
return rt_ofw_data(np);
}
int ra_external_irq_acquire(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin, rt_uint8_t mode)
{
rt_err_t err;
fsp_err_t fsp_err;
external_irq_trigger_t trigger;
if (!external_irq ||
(err = ra_external_irq_mode_to_fsp(mode, &trigger)))
{
return external_irq ? err : -RT_EINVAL;
}
if (external_irq->acquired)
{
if (!ra_external_irq_owner_is(external_irq, port, pin) ||
external_irq->cfg.trigger != trigger)
{
return -RT_EBUSY;
}
return external_irq->irq;
}
external_irq->cfg = *external_irq->fsp->p_cfg;
external_irq->cfg.trigger = trigger;
external_irq->cfg.p_callback = irq_callback;
external_irq->cfg.p_context = external_irq;
fsp_err = external_irq->fsp->p_api->open(external_irq->fsp->p_ctrl,
&external_irq->cfg);
if (fsp_err != FSP_SUCCESS)
{
LOG_E("IRQ%u open failed: %d", external_irq->channel, fsp_err);
return -RT_EIO;
}
external_irq->owner_port = port;
external_irq->owner_pin = pin;
external_irq->opened = RT_TRUE;
external_irq->acquired = RT_TRUE;
return external_irq->irq;
}
rt_err_t ra_external_irq_enable(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
fsp_err_t fsp_err;
if (!external_irq || !ra_external_irq_owner_is(external_irq, port, pin) ||
!external_irq->opened)
{
return -RT_EINVAL;
}
if (external_irq->enabled)
{
return RT_EOK;
}
fsp_err = external_irq->fsp->p_api->enable(external_irq->fsp->p_ctrl);
if (fsp_err != FSP_SUCCESS)
{
LOG_E("IRQ%u enable failed: %d", external_irq->channel, fsp_err);
return -RT_EIO;
}
external_irq->enabled = RT_TRUE;
return RT_EOK;
}
rt_err_t ra_external_irq_disable(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
fsp_err_t fsp_err;
if (!external_irq || !ra_external_irq_owner_is(external_irq, port, pin))
{
return -RT_EINVAL;
}
if (!external_irq->enabled)
{
return RT_EOK;
}
fsp_err = external_irq->fsp->p_api->disable(external_irq->fsp->p_ctrl);
if (fsp_err != FSP_SUCCESS)
{
LOG_E("IRQ%u disable failed: %d", external_irq->channel, fsp_err);
return -RT_EIO;
}
external_irq->enabled = RT_FALSE;
return RT_EOK;
}
rt_err_t ra_external_irq_release(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
rt_err_t err;
fsp_err_t fsp_err;
if (!external_irq || !ra_external_irq_owner_is(external_irq, port, pin))
{
return -RT_EINVAL;
}
if ((err = ra_external_irq_disable(external_irq, port, pin)))
{
return err;
}
if (external_irq->opened)
{
fsp_err = external_irq->fsp->p_api->close(external_irq->fsp->p_ctrl);
if (fsp_err != FSP_SUCCESS)
{
LOG_E("IRQ%u close failed: %d", external_irq->channel, fsp_err);
return -RT_EIO;
}
}
external_irq->opened = RT_FALSE;
external_irq->acquired = RT_FALSE;
external_irq->owner_port = 0;
external_irq->owner_pin = 0;
return RT_EOK;
}
void irq_callback(external_irq_callback_args_t *args)
{
struct ra_external_irq *external_irq;
struct rt_pic_irq *pirq;
if (!args || args->channel >= RA_EXTERNAL_IRQ_MAX_CHANNELS ||
!(external_irq = ra_external_irqs[args->channel]) ||
!external_irq->enabled)
{
return;
}
pirq = rt_pic_find_irq(&external_irq->parent, 0);
if (pirq->irq >= 0)
{
rt_interrupt_enter();
rt_pic_handle_isr(pirq);
rt_interrupt_leave();
}
}
static const struct rt_pic_ops ra_external_irq_pic_ops = {
.name = "RA-External-IRQ",
};
static rt_err_t ra_external_irq_probe(struct rt_platform_device *pdev)
{
rt_err_t err;
const char *trigger_name;
rt_uint32_t channel, clock_div;
struct rt_ofw_cell_args irq_args = { 0 };
struct rt_device *dev = &pdev->parent;
struct ra_external_irq *external_irq;
external_irq_trigger_t trigger;
external_irq_clock_source_div_t clock_source_div;
if ((err = rt_ofw_prop_read_u32(dev->ofw_node, "channel", &channel)))
{
return err;
}
if (channel >= RA_EXTERNAL_IRQ_MAX_CHANNELS)
{
return -RT_EINVAL;
}
external_irq = rt_calloc(1, sizeof(*external_irq));
if (!external_irq)
{
return -RT_ENOMEM;
}
external_irq->fsp = ra_external_irq_instance_get(channel);
if (!external_irq->fsp || external_irq->fsp->p_cfg->channel != channel ||
external_irq->fsp->p_cfg->p_callback != irq_callback)
{
err = -RT_EINVAL;
goto _fail;
}
if ((err = rt_ofw_prop_read_string(dev->ofw_node, "renesas,trigger",
&trigger_name)) ||
(err = ra_external_irq_trigger_from_ofw(trigger_name, &trigger)) ||
trigger != external_irq->fsp->p_cfg->trigger)
{
err = err ? err : -RT_EINVAL;
goto _fail;
}
clock_div = 1;
rt_ofw_prop_read_u32(dev->ofw_node, "renesas,sample-clock-div",
&clock_div);
if ((err = ra_external_irq_clock_div_from_ofw(clock_div,
&clock_source_div)) ||
clock_source_div != external_irq->fsp->p_cfg->clock_source_div ||
rt_ofw_prop_read_bool(dev->ofw_node, "renesas,digital-filtering") !=
external_irq->fsp->p_cfg->filter_enable)
{
err = err ? err : -RT_EINVAL;
goto _fail;
}
if ((err = rt_ofw_parse_irq_cells(dev->ofw_node, 0, &irq_args)))
{
goto _fail;
}
if (irq_args.args_count != 2 ||
irq_args.args[0] != (rt_uint32_t)external_irq->fsp->p_cfg->irq ||
irq_args.args[1] != external_irq->fsp->p_cfg->ipl)
{
err = -RT_EINVAL;
goto _put_irq_node;
}
external_irq->channel = channel;
external_irq->parent.ops = &ra_external_irq_pic_ops;
external_irq->parent.priv_data = external_irq;
if ((err = rt_pic_linear_irq(&external_irq->parent, 1)))
{
goto _put_irq_node;
}
external_irq->irq = rt_pic_config_irq(&external_irq->parent, 0, channel);
if (external_irq->irq < 0)
{
err = external_irq->irq;
rt_pic_cancel_irq(&external_irq->parent);
goto _put_irq_node;
}
rt_pic_user_extends(&external_irq->parent);
ra_external_irqs[channel] = external_irq;
rt_dm_dev_bind_fwdata(dev, RT_NULL, external_irq);
pdev->priv = external_irq;
rt_ofw_node_put(irq_args.data);
return RT_EOK;
_put_irq_node:
rt_ofw_node_put(irq_args.data);
_fail:
rt_free(external_irq);
return err;
}
static const struct rt_ofw_node_id ra_external_irq_ofw_ids[] = {
{ .compatible = "renesas,ra-external-interrupt" },
{ /* sentinel */ }
};
static struct rt_platform_driver ra_external_irq_driver = {
.name = "ra-external-interrupt",
.ids = ra_external_irq_ofw_ids,
.probe = ra_external_irq_probe,
};
RT_PLATFORM_DRIVER_EXPORT(ra_external_irq_driver);
#else
struct ra_external_irq *ra_external_irq_get(struct rt_ofw_node *np)
{
RT_UNUSED(np);
return RT_NULL;
}
int ra_external_irq_acquire(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin, rt_uint8_t mode)
{
RT_UNUSED(external_irq);
RT_UNUSED(port);
RT_UNUSED(pin);
RT_UNUSED(mode);
return -RT_ENOSYS;
}
rt_err_t ra_external_irq_enable(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
RT_UNUSED(external_irq);
RT_UNUSED(port);
RT_UNUSED(pin);
return -RT_ENOSYS;
}
rt_err_t ra_external_irq_disable(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
RT_UNUSED(external_irq);
RT_UNUSED(port);
RT_UNUSED(pin);
return -RT_ENOSYS;
}
rt_err_t ra_external_irq_release(struct ra_external_irq *external_irq,
rt_uint8_t port, rt_uint8_t pin)
{
RT_UNUSED(external_irq);
RT_UNUSED(port);
RT_UNUSED(pin);
return -RT_ENOSYS;
}
#endif /* R_ICU_H */
|
