1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * TI DaVinci GPIO Support
4 *
5 * Copyright (c) 2006-2007 David Brownell
6 * Copyright (c) 2007, MontaVista Software, Inc. <source@mvista.com>
7 */
8
9 #include <linux/gpio/driver.h>
10 #include <linux/errno.h>
11 #include <linux/kernel.h>
12 #include <linux/clk.h>
13 #include <linux/err.h>
14 #include <linux/io.h>
15 #include <linux/irq.h>
16 #include <linux/irqdomain.h>
17 #include <linux/module.h>
18 #include <linux/of.h>
19 #include <linux/of_device.h>
20 #include <linux/pinctrl/consumer.h>
21 #include <linux/platform_device.h>
22 #include <linux/platform_data/gpio-davinci.h>
23 #include <linux/irqchip/chained_irq.h>
24 #include <linux/spinlock.h>
25
26 #include <asm-generic/gpio.h>
27
28 #define MAX_REGS_BANKS 5
29 #define MAX_INT_PER_BANK 32
30
31 struct davinci_gpio_regs {
32 u32 dir;
33 u32 out_data;
34 u32 set_data;
35 u32 clr_data;
36 u32 in_data;
37 u32 set_rising;
38 u32 clr_rising;
39 u32 set_falling;
40 u32 clr_falling;
41 u32 intstat;
42 };
43
44 typedef struct irq_chip *(*gpio_get_irq_chip_cb_t)(unsigned int irq);
45
46 #define BINTEN 0x8 /* GPIO Interrupt Per-Bank Enable Register */
47
48 static void __iomem *gpio_base;
49 static unsigned int offset_array[5] = {0x10, 0x38, 0x60, 0x88, 0xb0};
50
51 struct davinci_gpio_irq_data {
52 void __iomem *regs;
53 struct davinci_gpio_controller *chip;
54 int bank_num;
55 };
56
57 struct davinci_gpio_controller {
58 struct gpio_chip chip;
59 struct irq_domain *irq_domain;
60 /* Serialize access to GPIO registers */
61 spinlock_t lock;
62 void __iomem *regs[MAX_REGS_BANKS];
63 int gpio_unbanked;
64 int irqs[MAX_INT_PER_BANK];
65 };
66
__gpio_mask(unsigned gpio)67 static inline u32 __gpio_mask(unsigned gpio)
68 {
69 return 1 << (gpio % 32);
70 }
71
irq2regs(struct irq_data * d)72 static inline struct davinci_gpio_regs __iomem *irq2regs(struct irq_data *d)
73 {
74 struct davinci_gpio_regs __iomem *g;
75
76 g = (__force struct davinci_gpio_regs __iomem *)irq_data_get_irq_chip_data(d);
77
78 return g;
79 }
80
81 static int davinci_gpio_irq_setup(struct platform_device *pdev);
82
83 /*--------------------------------------------------------------------------*/
84
85 /* board setup code *MUST* setup pinmux and enable the GPIO clock. */
__davinci_direction(struct gpio_chip * chip,unsigned offset,bool out,int value)86 static inline int __davinci_direction(struct gpio_chip *chip,
87 unsigned offset, bool out, int value)
88 {
89 struct davinci_gpio_controller *d = gpiochip_get_data(chip);
90 struct davinci_gpio_regs __iomem *g;
91 unsigned long flags;
92 u32 temp;
93 int bank = offset / 32;
94 u32 mask = __gpio_mask(offset);
95
96 g = d->regs[bank];
97 spin_lock_irqsave(&d->lock, flags);
98 temp = readl_relaxed(&g->dir);
99 if (out) {
100 temp &= ~mask;
101 writel_relaxed(mask, value ? &g->set_data : &g->clr_data);
102 } else {
103 temp |= mask;
104 }
105 writel_relaxed(temp, &g->dir);
106 spin_unlock_irqrestore(&d->lock, flags);
107
108 return 0;
109 }
110
davinci_direction_in(struct gpio_chip * chip,unsigned offset)111 static int davinci_direction_in(struct gpio_chip *chip, unsigned offset)
112 {
113 return __davinci_direction(chip, offset, false, 0);
114 }
115
116 static int
davinci_direction_out(struct gpio_chip * chip,unsigned offset,int value)117 davinci_direction_out(struct gpio_chip *chip, unsigned offset, int value)
118 {
119 return __davinci_direction(chip, offset, true, value);
120 }
121
122 /*
123 * Read the pin's value (works even if it's set up as output);
124 * returns zero/nonzero.
125 *
126 * Note that changes are synched to the GPIO clock, so reading values back
127 * right after you've set them may give old values.
128 */
davinci_gpio_get(struct gpio_chip * chip,unsigned offset)129 static int davinci_gpio_get(struct gpio_chip *chip, unsigned offset)
130 {
131 struct davinci_gpio_controller *d = gpiochip_get_data(chip);
132 struct davinci_gpio_regs __iomem *g;
133 int bank = offset / 32;
134
135 g = d->regs[bank];
136
137 return !!(__gpio_mask(offset) & readl_relaxed(&g->in_data));
138 }
139
140 /*
141 * Assuming the pin is muxed as a gpio output, set its output value.
142 */
143 static void
davinci_gpio_set(struct gpio_chip * chip,unsigned offset,int value)144 davinci_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
145 {
146 struct davinci_gpio_controller *d = gpiochip_get_data(chip);
147 struct davinci_gpio_regs __iomem *g;
148 int bank = offset / 32;
149
150 g = d->regs[bank];
151
152 writel_relaxed(__gpio_mask(offset),
153 value ? &g->set_data : &g->clr_data);
154 }
155
156 static struct davinci_gpio_platform_data *
davinci_gpio_get_pdata(struct platform_device * pdev)157 davinci_gpio_get_pdata(struct platform_device *pdev)
158 {
159 struct device_node *dn = pdev->dev.of_node;
160 struct davinci_gpio_platform_data *pdata;
161 int ret;
162 u32 val;
163
164 if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
165 return dev_get_platdata(&pdev->dev);
166
167 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
168 if (!pdata)
169 return NULL;
170
171 ret = of_property_read_u32(dn, "ti,ngpio", &val);
172 if (ret)
173 goto of_err;
174
175 pdata->ngpio = val;
176
177 ret = of_property_read_u32(dn, "ti,davinci-gpio-unbanked", &val);
178 if (ret)
179 goto of_err;
180
181 pdata->gpio_unbanked = val;
182
183 return pdata;
184
185 of_err:
186 dev_err(&pdev->dev, "Populating pdata from DT failed: err %d\n", ret);
187 return NULL;
188 }
189
davinci_gpio_probe(struct platform_device * pdev)190 static int davinci_gpio_probe(struct platform_device *pdev)
191 {
192 int bank, i, ret = 0;
193 unsigned int ngpio, nbank, nirq;
194 struct davinci_gpio_controller *chips;
195 struct davinci_gpio_platform_data *pdata;
196 struct device *dev = &pdev->dev;
197
198 pdata = davinci_gpio_get_pdata(pdev);
199 if (!pdata) {
200 dev_err(dev, "No platform data found\n");
201 return -EINVAL;
202 }
203
204 dev->platform_data = pdata;
205
206 /*
207 * The gpio banks conceptually expose a segmented bitmap,
208 * and "ngpio" is one more than the largest zero-based
209 * bit index that's valid.
210 */
211 ngpio = pdata->ngpio;
212 if (ngpio == 0) {
213 dev_err(dev, "How many GPIOs?\n");
214 return -EINVAL;
215 }
216
217 if (WARN_ON(ARCH_NR_GPIOS < ngpio))
218 ngpio = ARCH_NR_GPIOS;
219
220 /*
221 * If there are unbanked interrupts then the number of
222 * interrupts is equal to number of gpios else all are banked so
223 * number of interrupts is equal to number of banks(each with 16 gpios)
224 */
225 if (pdata->gpio_unbanked)
226 nirq = pdata->gpio_unbanked;
227 else
228 nirq = DIV_ROUND_UP(ngpio, 16);
229
230 chips = devm_kzalloc(dev, sizeof(*chips), GFP_KERNEL);
231 if (!chips)
232 return -ENOMEM;
233
234 gpio_base = devm_platform_ioremap_resource(pdev, 0);
235 if (IS_ERR(gpio_base))
236 return PTR_ERR(gpio_base);
237
238 for (i = 0; i < nirq; i++) {
239 chips->irqs[i] = platform_get_irq(pdev, i);
240 if (chips->irqs[i] < 0)
241 return dev_err_probe(dev, chips->irqs[i], "IRQ not populated\n");
242 }
243
244 chips->chip.label = dev_name(dev);
245
246 chips->chip.direction_input = davinci_direction_in;
247 chips->chip.get = davinci_gpio_get;
248 chips->chip.direction_output = davinci_direction_out;
249 chips->chip.set = davinci_gpio_set;
250
251 chips->chip.ngpio = ngpio;
252 chips->chip.base = pdata->no_auto_base ? pdata->base : -1;
253
254 #ifdef CONFIG_OF_GPIO
255 chips->chip.of_gpio_n_cells = 2;
256 chips->chip.parent = dev;
257 chips->chip.request = gpiochip_generic_request;
258 chips->chip.free = gpiochip_generic_free;
259 #endif
260 spin_lock_init(&chips->lock);
261
262 nbank = DIV_ROUND_UP(ngpio, 32);
263 for (bank = 0; bank < nbank; bank++)
264 chips->regs[bank] = gpio_base + offset_array[bank];
265
266 ret = devm_gpiochip_add_data(dev, &chips->chip, chips);
267 if (ret)
268 return ret;
269
270 platform_set_drvdata(pdev, chips);
271 ret = davinci_gpio_irq_setup(pdev);
272 if (ret)
273 return ret;
274
275 return 0;
276 }
277
278 /*--------------------------------------------------------------------------*/
279 /*
280 * We expect irqs will normally be set up as input pins, but they can also be
281 * used as output pins ... which is convenient for testing.
282 *
283 * NOTE: The first few GPIOs also have direct INTC hookups in addition
284 * to their GPIOBNK0 irq, with a bit less overhead.
285 *
286 * All those INTC hookups (direct, plus several IRQ banks) can also
287 * serve as EDMA event triggers.
288 */
289
gpio_irq_disable(struct irq_data * d)290 static void gpio_irq_disable(struct irq_data *d)
291 {
292 struct davinci_gpio_regs __iomem *g = irq2regs(d);
293 uintptr_t mask = (uintptr_t)irq_data_get_irq_handler_data(d);
294
295 writel_relaxed(mask, &g->clr_falling);
296 writel_relaxed(mask, &g->clr_rising);
297 }
298
gpio_irq_enable(struct irq_data * d)299 static void gpio_irq_enable(struct irq_data *d)
300 {
301 struct davinci_gpio_regs __iomem *g = irq2regs(d);
302 uintptr_t mask = (uintptr_t)irq_data_get_irq_handler_data(d);
303 unsigned status = irqd_get_trigger_type(d);
304
305 status &= IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
306 if (!status)
307 status = IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
308
309 if (status & IRQ_TYPE_EDGE_FALLING)
310 writel_relaxed(mask, &g->set_falling);
311 if (status & IRQ_TYPE_EDGE_RISING)
312 writel_relaxed(mask, &g->set_rising);
313 }
314
gpio_irq_type(struct irq_data * d,unsigned trigger)315 static int gpio_irq_type(struct irq_data *d, unsigned trigger)
316 {
317 if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
318 return -EINVAL;
319
320 return 0;
321 }
322
323 static struct irq_chip gpio_irqchip = {
324 .name = "GPIO",
325 .irq_enable = gpio_irq_enable,
326 .irq_disable = gpio_irq_disable,
327 .irq_set_type = gpio_irq_type,
328 .flags = IRQCHIP_SET_TYPE_MASKED,
329 };
330
gpio_irq_handler(struct irq_desc * desc)331 static void gpio_irq_handler(struct irq_desc *desc)
332 {
333 struct davinci_gpio_regs __iomem *g;
334 u32 mask = 0xffff;
335 int bank_num;
336 struct davinci_gpio_controller *d;
337 struct davinci_gpio_irq_data *irqdata;
338
339 irqdata = (struct davinci_gpio_irq_data *)irq_desc_get_handler_data(desc);
340 bank_num = irqdata->bank_num;
341 g = irqdata->regs;
342 d = irqdata->chip;
343
344 /* we only care about one bank */
345 if ((bank_num % 2) == 1)
346 mask <<= 16;
347
348 /* temporarily mask (level sensitive) parent IRQ */
349 chained_irq_enter(irq_desc_get_chip(desc), desc);
350 while (1) {
351 u32 status;
352 int bit;
353 irq_hw_number_t hw_irq;
354
355 /* ack any irqs */
356 status = readl_relaxed(&g->intstat) & mask;
357 if (!status)
358 break;
359 writel_relaxed(status, &g->intstat);
360
361 /* now demux them to the right lowlevel handler */
362
363 while (status) {
364 bit = __ffs(status);
365 status &= ~BIT(bit);
366 /* Max number of gpios per controller is 144 so
367 * hw_irq will be in [0..143]
368 */
369 hw_irq = (bank_num / 2) * 32 + bit;
370
371 generic_handle_domain_irq(d->irq_domain, hw_irq);
372 }
373 }
374 chained_irq_exit(irq_desc_get_chip(desc), desc);
375 /* now it may re-trigger */
376 }
377
gpio_to_irq_banked(struct gpio_chip * chip,unsigned offset)378 static int gpio_to_irq_banked(struct gpio_chip *chip, unsigned offset)
379 {
380 struct davinci_gpio_controller *d = gpiochip_get_data(chip);
381
382 if (d->irq_domain)
383 return irq_create_mapping(d->irq_domain, offset);
384 else
385 return -ENXIO;
386 }
387
gpio_to_irq_unbanked(struct gpio_chip * chip,unsigned offset)388 static int gpio_to_irq_unbanked(struct gpio_chip *chip, unsigned offset)
389 {
390 struct davinci_gpio_controller *d = gpiochip_get_data(chip);
391
392 /*
393 * NOTE: we assume for now that only irqs in the first gpio_chip
394 * can provide direct-mapped IRQs to AINTC (up to 32 GPIOs).
395 */
396 if (offset < d->gpio_unbanked)
397 return d->irqs[offset];
398 else
399 return -ENODEV;
400 }
401
gpio_irq_type_unbanked(struct irq_data * data,unsigned trigger)402 static int gpio_irq_type_unbanked(struct irq_data *data, unsigned trigger)
403 {
404 struct davinci_gpio_controller *d;
405 struct davinci_gpio_regs __iomem *g;
406 u32 mask, i;
407
408 d = (struct davinci_gpio_controller *)irq_data_get_irq_handler_data(data);
409 g = (struct davinci_gpio_regs __iomem *)d->regs[0];
410 for (i = 0; i < MAX_INT_PER_BANK; i++)
411 if (data->irq == d->irqs[i])
412 break;
413
414 if (i == MAX_INT_PER_BANK)
415 return -EINVAL;
416
417 mask = __gpio_mask(i);
418
419 if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
420 return -EINVAL;
421
422 writel_relaxed(mask, (trigger & IRQ_TYPE_EDGE_FALLING)
423 ? &g->set_falling : &g->clr_falling);
424 writel_relaxed(mask, (trigger & IRQ_TYPE_EDGE_RISING)
425 ? &g->set_rising : &g->clr_rising);
426
427 return 0;
428 }
429
430 static int
davinci_gpio_irq_map(struct irq_domain * d,unsigned int irq,irq_hw_number_t hw)431 davinci_gpio_irq_map(struct irq_domain *d, unsigned int irq,
432 irq_hw_number_t hw)
433 {
434 struct davinci_gpio_controller *chips =
435 (struct davinci_gpio_controller *)d->host_data;
436 struct davinci_gpio_regs __iomem *g = chips->regs[hw / 32];
437
438 irq_set_chip_and_handler_name(irq, &gpio_irqchip, handle_simple_irq,
439 "davinci_gpio");
440 irq_set_irq_type(irq, IRQ_TYPE_NONE);
441 irq_set_chip_data(irq, (__force void *)g);
442 irq_set_handler_data(irq, (void *)(uintptr_t)__gpio_mask(hw));
443
444 return 0;
445 }
446
447 static const struct irq_domain_ops davinci_gpio_irq_ops = {
448 .map = davinci_gpio_irq_map,
449 .xlate = irq_domain_xlate_onetwocell,
450 };
451
davinci_gpio_get_irq_chip(unsigned int irq)452 static struct irq_chip *davinci_gpio_get_irq_chip(unsigned int irq)
453 {
454 static struct irq_chip_type gpio_unbanked;
455
456 gpio_unbanked = *irq_data_get_chip_type(irq_get_irq_data(irq));
457
458 return &gpio_unbanked.chip;
459 };
460
keystone_gpio_get_irq_chip(unsigned int irq)461 static struct irq_chip *keystone_gpio_get_irq_chip(unsigned int irq)
462 {
463 static struct irq_chip gpio_unbanked;
464
465 gpio_unbanked = *irq_get_chip(irq);
466 return &gpio_unbanked;
467 };
468
469 static const struct of_device_id davinci_gpio_ids[];
470
471 /*
472 * NOTE: for suspend/resume, probably best to make a platform_device with
473 * suspend_late/resume_resume calls hooking into results of the set_wake()
474 * calls ... so if no gpios are wakeup events the clock can be disabled,
475 * with outputs left at previously set levels, and so that VDD3P3V.IOPWDN0
476 * (dm6446) can be set appropriately for GPIOV33 pins.
477 */
478
davinci_gpio_irq_setup(struct platform_device * pdev)479 static int davinci_gpio_irq_setup(struct platform_device *pdev)
480 {
481 unsigned gpio, bank;
482 int irq;
483 int ret;
484 struct clk *clk;
485 u32 binten = 0;
486 unsigned ngpio;
487 struct device *dev = &pdev->dev;
488 struct davinci_gpio_controller *chips = platform_get_drvdata(pdev);
489 struct davinci_gpio_platform_data *pdata = dev->platform_data;
490 struct davinci_gpio_regs __iomem *g;
491 struct irq_domain *irq_domain = NULL;
492 const struct of_device_id *match;
493 struct irq_chip *irq_chip;
494 struct davinci_gpio_irq_data *irqdata;
495 gpio_get_irq_chip_cb_t gpio_get_irq_chip;
496
497 /*
498 * Use davinci_gpio_get_irq_chip by default to handle non DT cases
499 */
500 gpio_get_irq_chip = davinci_gpio_get_irq_chip;
501 match = of_match_device(of_match_ptr(davinci_gpio_ids),
502 dev);
503 if (match)
504 gpio_get_irq_chip = (gpio_get_irq_chip_cb_t)match->data;
505
506 ngpio = pdata->ngpio;
507
508 clk = devm_clk_get(dev, "gpio");
509 if (IS_ERR(clk)) {
510 dev_err(dev, "Error %ld getting gpio clock\n", PTR_ERR(clk));
511 return PTR_ERR(clk);
512 }
513
514 ret = clk_prepare_enable(clk);
515 if (ret)
516 return ret;
517
518 if (!pdata->gpio_unbanked) {
519 irq = devm_irq_alloc_descs(dev, -1, 0, ngpio, 0);
520 if (irq < 0) {
521 dev_err(dev, "Couldn't allocate IRQ numbers\n");
522 clk_disable_unprepare(clk);
523 return irq;
524 }
525
526 irq_domain = irq_domain_add_legacy(dev->of_node, ngpio, irq, 0,
527 &davinci_gpio_irq_ops,
528 chips);
529 if (!irq_domain) {
530 dev_err(dev, "Couldn't register an IRQ domain\n");
531 clk_disable_unprepare(clk);
532 return -ENODEV;
533 }
534 }
535
536 /*
537 * Arrange gpio_to_irq() support, handling either direct IRQs or
538 * banked IRQs. Having GPIOs in the first GPIO bank use direct
539 * IRQs, while the others use banked IRQs, would need some setup
540 * tweaks to recognize hardware which can do that.
541 */
542 chips->chip.to_irq = gpio_to_irq_banked;
543 chips->irq_domain = irq_domain;
544
545 /*
546 * AINTC can handle direct/unbanked IRQs for GPIOs, with the GPIO
547 * controller only handling trigger modes. We currently assume no
548 * IRQ mux conflicts; gpio_irq_type_unbanked() is only for GPIOs.
549 */
550 if (pdata->gpio_unbanked) {
551 /* pass "bank 0" GPIO IRQs to AINTC */
552 chips->chip.to_irq = gpio_to_irq_unbanked;
553 chips->gpio_unbanked = pdata->gpio_unbanked;
554 binten = GENMASK(pdata->gpio_unbanked / 16, 0);
555
556 /* AINTC handles mask/unmask; GPIO handles triggering */
557 irq = chips->irqs[0];
558 irq_chip = gpio_get_irq_chip(irq);
559 irq_chip->name = "GPIO-AINTC";
560 irq_chip->irq_set_type = gpio_irq_type_unbanked;
561
562 /* default trigger: both edges */
563 g = chips->regs[0];
564 writel_relaxed(~0, &g->set_falling);
565 writel_relaxed(~0, &g->set_rising);
566
567 /* set the direct IRQs up to use that irqchip */
568 for (gpio = 0; gpio < pdata->gpio_unbanked; gpio++) {
569 irq_set_chip(chips->irqs[gpio], irq_chip);
570 irq_set_handler_data(chips->irqs[gpio], chips);
571 irq_set_status_flags(chips->irqs[gpio],
572 IRQ_TYPE_EDGE_BOTH);
573 }
574
575 goto done;
576 }
577
578 /*
579 * Or, AINTC can handle IRQs for banks of 16 GPIO IRQs, which we
580 * then chain through our own handler.
581 */
582 for (gpio = 0, bank = 0; gpio < ngpio; bank++, gpio += 16) {
583 /* disabled by default, enabled only as needed
584 * There are register sets for 32 GPIOs. 2 banks of 16
585 * GPIOs are covered by each set of registers hence divide by 2
586 */
587 g = chips->regs[bank / 2];
588 writel_relaxed(~0, &g->clr_falling);
589 writel_relaxed(~0, &g->clr_rising);
590
591 /*
592 * Each chip handles 32 gpios, and each irq bank consists of 16
593 * gpio irqs. Pass the irq bank's corresponding controller to
594 * the chained irq handler.
595 */
596 irqdata = devm_kzalloc(&pdev->dev,
597 sizeof(struct
598 davinci_gpio_irq_data),
599 GFP_KERNEL);
600 if (!irqdata) {
601 clk_disable_unprepare(clk);
602 return -ENOMEM;
603 }
604
605 irqdata->regs = g;
606 irqdata->bank_num = bank;
607 irqdata->chip = chips;
608
609 irq_set_chained_handler_and_data(chips->irqs[bank],
610 gpio_irq_handler, irqdata);
611
612 binten |= BIT(bank);
613 }
614
615 done:
616 /*
617 * BINTEN -- per-bank interrupt enable. genirq would also let these
618 * bits be set/cleared dynamically.
619 */
620 writel_relaxed(binten, gpio_base + BINTEN);
621
622 return 0;
623 }
624
625 static const struct of_device_id davinci_gpio_ids[] = {
626 { .compatible = "ti,keystone-gpio", keystone_gpio_get_irq_chip},
627 { .compatible = "ti,am654-gpio", keystone_gpio_get_irq_chip},
628 { .compatible = "ti,dm6441-gpio", davinci_gpio_get_irq_chip},
629 { /* sentinel */ },
630 };
631 MODULE_DEVICE_TABLE(of, davinci_gpio_ids);
632
633 static struct platform_driver davinci_gpio_driver = {
634 .probe = davinci_gpio_probe,
635 .driver = {
636 .name = "davinci_gpio",
637 .of_match_table = of_match_ptr(davinci_gpio_ids),
638 },
639 };
640
641 /**
642 * GPIO driver registration needs to be done before machine_init functions
643 * access GPIO. Hence davinci_gpio_drv_reg() is a postcore_initcall.
644 */
davinci_gpio_drv_reg(void)645 static int __init davinci_gpio_drv_reg(void)
646 {
647 return platform_driver_register(&davinci_gpio_driver);
648 }
649 postcore_initcall(davinci_gpio_drv_reg);
650