1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2016-2022 NVIDIA Corporation
4 *
5 * Author: Thierry Reding <treding@nvidia.com>
6 * Dipen Patel <dpatel@nvidia.com>
7 */
8
9 #include <linux/gpio/driver.h>
10 #include <linux/hte.h>
11 #include <linux/interrupt.h>
12 #include <linux/irq.h>
13 #include <linux/module.h>
14 #include <linux/of.h>
15 #include <linux/platform_device.h>
16 #include <linux/property.h>
17 #include <linux/seq_file.h>
18
19 #include <dt-bindings/gpio/tegra186-gpio.h>
20 #include <dt-bindings/gpio/tegra194-gpio.h>
21 #include <dt-bindings/gpio/tegra234-gpio.h>
22 #include <dt-bindings/gpio/tegra241-gpio.h>
23
24 /* security registers */
25 #define TEGRA186_GPIO_CTL_SCR 0x0c
26 #define TEGRA186_GPIO_CTL_SCR_SEC_WEN BIT(28)
27 #define TEGRA186_GPIO_CTL_SCR_SEC_REN BIT(27)
28
29 #define TEGRA186_GPIO_INT_ROUTE_MAPPING(p, x) (0x14 + (p) * 0x20 + (x) * 4)
30
31 #define TEGRA186_GPIO_VM 0x00
32 #define TEGRA186_GPIO_VM_RW_MASK 0x03
33 #define TEGRA186_GPIO_SCR 0x04
34 #define TEGRA186_GPIO_SCR_PIN_SIZE 0x08
35 #define TEGRA186_GPIO_SCR_PORT_SIZE 0x40
36 #define TEGRA186_GPIO_SCR_SEC_WEN BIT(28)
37 #define TEGRA186_GPIO_SCR_SEC_REN BIT(27)
38 #define TEGRA186_GPIO_SCR_SEC_G1W BIT(9)
39 #define TEGRA186_GPIO_SCR_SEC_G1R BIT(1)
40
41 /* control registers */
42 #define TEGRA186_GPIO_ENABLE_CONFIG 0x00
43 #define TEGRA186_GPIO_ENABLE_CONFIG_ENABLE BIT(0)
44 #define TEGRA186_GPIO_ENABLE_CONFIG_OUT BIT(1)
45 #define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_NONE (0x0 << 2)
46 #define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL (0x1 << 2)
47 #define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE (0x2 << 2)
48 #define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE (0x3 << 2)
49 #define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_MASK (0x3 << 2)
50 #define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL BIT(4)
51 #define TEGRA186_GPIO_ENABLE_CONFIG_DEBOUNCE BIT(5)
52 #define TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT BIT(6)
53 #define TEGRA186_GPIO_ENABLE_CONFIG_TIMESTAMP_FUNC BIT(7)
54
55 #define TEGRA186_GPIO_DEBOUNCE_CONTROL 0x04
56 #define TEGRA186_GPIO_DEBOUNCE_CONTROL_THRESHOLD(x) ((x) & 0xff)
57
58 #define TEGRA186_GPIO_INPUT 0x08
59 #define TEGRA186_GPIO_INPUT_HIGH BIT(0)
60
61 #define TEGRA186_GPIO_OUTPUT_CONTROL 0x0c
62 #define TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED BIT(0)
63
64 #define TEGRA186_GPIO_OUTPUT_VALUE 0x10
65 #define TEGRA186_GPIO_OUTPUT_VALUE_HIGH BIT(0)
66
67 #define TEGRA186_GPIO_INTERRUPT_CLEAR 0x14
68
69 #define TEGRA186_GPIO_INTERRUPT_STATUS(x) (0x100 + (x) * 4)
70
71 struct tegra_gpio_port {
72 const char *name;
73 unsigned int bank;
74 unsigned int port;
75 unsigned int pins;
76 };
77
78 struct tegra186_pin_range {
79 unsigned int offset;
80 const char *group;
81 };
82
83 struct tegra_gpio_soc {
84 const struct tegra_gpio_port *ports;
85 unsigned int num_ports;
86 const char *name;
87 unsigned int instance;
88
89 unsigned int num_irqs_per_bank;
90
91 const struct tegra186_pin_range *pin_ranges;
92 unsigned int num_pin_ranges;
93 const char *pinmux;
94 bool has_gte;
95 bool has_vm_support;
96 };
97
98 struct tegra_gpio {
99 struct gpio_chip gpio;
100 unsigned int num_irq;
101 unsigned int *irq;
102
103 const struct tegra_gpio_soc *soc;
104 unsigned int num_irqs_per_bank;
105 unsigned int num_banks;
106
107 void __iomem *secure;
108 void __iomem *base;
109 };
110
111 static const struct tegra_gpio_port *
tegra186_gpio_get_port(struct tegra_gpio * gpio,unsigned int * pin)112 tegra186_gpio_get_port(struct tegra_gpio *gpio, unsigned int *pin)
113 {
114 unsigned int start = 0, i;
115
116 for (i = 0; i < gpio->soc->num_ports; i++) {
117 const struct tegra_gpio_port *port = &gpio->soc->ports[i];
118
119 if (*pin >= start && *pin < start + port->pins) {
120 *pin -= start;
121 return port;
122 }
123
124 start += port->pins;
125 }
126
127 return NULL;
128 }
129
tegra186_gpio_get_base(struct tegra_gpio * gpio,unsigned int pin)130 static void __iomem *tegra186_gpio_get_base(struct tegra_gpio *gpio,
131 unsigned int pin)
132 {
133 const struct tegra_gpio_port *port;
134 unsigned int offset;
135
136 port = tegra186_gpio_get_port(gpio, &pin);
137 if (!port)
138 return NULL;
139
140 offset = port->bank * 0x1000 + port->port * 0x200;
141
142 return gpio->base + offset + pin * 0x20;
143 }
144
tegra186_gpio_get_secure_base(struct tegra_gpio * gpio,unsigned int pin)145 static void __iomem *tegra186_gpio_get_secure_base(struct tegra_gpio *gpio,
146 unsigned int pin)
147 {
148 const struct tegra_gpio_port *port;
149 unsigned int offset;
150
151 port = tegra186_gpio_get_port(gpio, &pin);
152 if (!port)
153 return NULL;
154
155 offset = port->bank * 0x1000 + port->port * TEGRA186_GPIO_SCR_PORT_SIZE;
156
157 return gpio->secure + offset + pin * TEGRA186_GPIO_SCR_PIN_SIZE;
158 }
159
tegra186_gpio_is_accessible(struct tegra_gpio * gpio,unsigned int pin)160 static inline bool tegra186_gpio_is_accessible(struct tegra_gpio *gpio, unsigned int pin)
161 {
162 void __iomem *secure;
163 u32 value;
164
165 secure = tegra186_gpio_get_secure_base(gpio, pin);
166
167 if (gpio->soc->has_vm_support) {
168 value = readl(secure + TEGRA186_GPIO_VM);
169 if ((value & TEGRA186_GPIO_VM_RW_MASK) != TEGRA186_GPIO_VM_RW_MASK)
170 return false;
171 }
172
173 value = __raw_readl(secure + TEGRA186_GPIO_SCR);
174
175 /*
176 * When SCR_SEC_[R|W]EN is unset, then we have full read/write access to all the
177 * registers for given GPIO pin.
178 * When SCR_SEC[R|W]EN is set, then there is need to further check the accompanying
179 * SCR_SEC_G1[R|W] bit to determine read/write access to all the registers for given
180 * GPIO pin.
181 */
182
183 if (((value & TEGRA186_GPIO_SCR_SEC_REN) == 0 ||
184 ((value & TEGRA186_GPIO_SCR_SEC_REN) && (value & TEGRA186_GPIO_SCR_SEC_G1R))) &&
185 ((value & TEGRA186_GPIO_SCR_SEC_WEN) == 0 ||
186 ((value & TEGRA186_GPIO_SCR_SEC_WEN) && (value & TEGRA186_GPIO_SCR_SEC_G1W))))
187 return true;
188
189 return false;
190 }
191
tegra186_init_valid_mask(struct gpio_chip * chip,unsigned long * valid_mask,unsigned int ngpios)192 static int tegra186_init_valid_mask(struct gpio_chip *chip,
193 unsigned long *valid_mask, unsigned int ngpios)
194 {
195 struct tegra_gpio *gpio = gpiochip_get_data(chip);
196 unsigned int j;
197
198 for (j = 0; j < ngpios; j++) {
199 if (!tegra186_gpio_is_accessible(gpio, j))
200 clear_bit(j, valid_mask);
201 }
202 return 0;
203 }
204
tegra186_gpio_get_direction(struct gpio_chip * chip,unsigned int offset)205 static int tegra186_gpio_get_direction(struct gpio_chip *chip,
206 unsigned int offset)
207 {
208 struct tegra_gpio *gpio = gpiochip_get_data(chip);
209 void __iomem *base;
210 u32 value;
211
212 base = tegra186_gpio_get_base(gpio, offset);
213 if (WARN_ON(base == NULL))
214 return -ENODEV;
215
216 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
217 if (value & TEGRA186_GPIO_ENABLE_CONFIG_OUT)
218 return GPIO_LINE_DIRECTION_OUT;
219
220 return GPIO_LINE_DIRECTION_IN;
221 }
222
tegra186_gpio_direction_input(struct gpio_chip * chip,unsigned int offset)223 static int tegra186_gpio_direction_input(struct gpio_chip *chip,
224 unsigned int offset)
225 {
226 struct tegra_gpio *gpio = gpiochip_get_data(chip);
227 void __iomem *base;
228 u32 value;
229
230 base = tegra186_gpio_get_base(gpio, offset);
231 if (WARN_ON(base == NULL))
232 return -ENODEV;
233
234 value = readl(base + TEGRA186_GPIO_OUTPUT_CONTROL);
235 value |= TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED;
236 writel(value, base + TEGRA186_GPIO_OUTPUT_CONTROL);
237
238 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
239 value |= TEGRA186_GPIO_ENABLE_CONFIG_ENABLE;
240 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_OUT;
241 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
242
243 return 0;
244 }
245
tegra186_gpio_direction_output(struct gpio_chip * chip,unsigned int offset,int level)246 static int tegra186_gpio_direction_output(struct gpio_chip *chip,
247 unsigned int offset, int level)
248 {
249 struct tegra_gpio *gpio = gpiochip_get_data(chip);
250 void __iomem *base;
251 u32 value;
252
253 /* configure output level first */
254 chip->set(chip, offset, level);
255
256 base = tegra186_gpio_get_base(gpio, offset);
257 if (WARN_ON(base == NULL))
258 return -EINVAL;
259
260 /* set the direction */
261 value = readl(base + TEGRA186_GPIO_OUTPUT_CONTROL);
262 value &= ~TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED;
263 writel(value, base + TEGRA186_GPIO_OUTPUT_CONTROL);
264
265 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
266 value |= TEGRA186_GPIO_ENABLE_CONFIG_ENABLE;
267 value |= TEGRA186_GPIO_ENABLE_CONFIG_OUT;
268 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
269
270 return 0;
271 }
272
273 #define HTE_BOTH_EDGES (HTE_RISING_EDGE_TS | HTE_FALLING_EDGE_TS)
274
tegra186_gpio_en_hw_ts(struct gpio_chip * gc,u32 offset,unsigned long flags)275 static int tegra186_gpio_en_hw_ts(struct gpio_chip *gc, u32 offset,
276 unsigned long flags)
277 {
278 struct tegra_gpio *gpio;
279 void __iomem *base;
280 int value;
281
282 if (!gc)
283 return -EINVAL;
284
285 gpio = gpiochip_get_data(gc);
286 if (!gpio)
287 return -ENODEV;
288
289 base = tegra186_gpio_get_base(gpio, offset);
290 if (WARN_ON(base == NULL))
291 return -EINVAL;
292
293 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
294 value |= TEGRA186_GPIO_ENABLE_CONFIG_TIMESTAMP_FUNC;
295
296 if (flags == HTE_BOTH_EDGES) {
297 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE;
298 } else if (flags == HTE_RISING_EDGE_TS) {
299 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
300 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
301 } else if (flags == HTE_FALLING_EDGE_TS) {
302 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
303 }
304
305 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
306
307 return 0;
308 }
309
tegra186_gpio_dis_hw_ts(struct gpio_chip * gc,u32 offset,unsigned long flags)310 static int tegra186_gpio_dis_hw_ts(struct gpio_chip *gc, u32 offset,
311 unsigned long flags)
312 {
313 struct tegra_gpio *gpio;
314 void __iomem *base;
315 int value;
316
317 if (!gc)
318 return -EINVAL;
319
320 gpio = gpiochip_get_data(gc);
321 if (!gpio)
322 return -ENODEV;
323
324 base = tegra186_gpio_get_base(gpio, offset);
325 if (WARN_ON(base == NULL))
326 return -EINVAL;
327
328 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
329 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TIMESTAMP_FUNC;
330 if (flags == HTE_BOTH_EDGES) {
331 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE;
332 } else if (flags == HTE_RISING_EDGE_TS) {
333 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
334 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
335 } else if (flags == HTE_FALLING_EDGE_TS) {
336 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
337 }
338 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
339
340 return 0;
341 }
342
tegra186_gpio_get(struct gpio_chip * chip,unsigned int offset)343 static int tegra186_gpio_get(struct gpio_chip *chip, unsigned int offset)
344 {
345 struct tegra_gpio *gpio = gpiochip_get_data(chip);
346 void __iomem *base;
347 u32 value;
348
349 base = tegra186_gpio_get_base(gpio, offset);
350 if (WARN_ON(base == NULL))
351 return -ENODEV;
352
353 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
354 if (value & TEGRA186_GPIO_ENABLE_CONFIG_OUT)
355 value = readl(base + TEGRA186_GPIO_OUTPUT_VALUE);
356 else
357 value = readl(base + TEGRA186_GPIO_INPUT);
358
359 return value & BIT(0);
360 }
361
tegra186_gpio_set(struct gpio_chip * chip,unsigned int offset,int level)362 static void tegra186_gpio_set(struct gpio_chip *chip, unsigned int offset,
363 int level)
364 {
365 struct tegra_gpio *gpio = gpiochip_get_data(chip);
366 void __iomem *base;
367 u32 value;
368
369 base = tegra186_gpio_get_base(gpio, offset);
370 if (WARN_ON(base == NULL))
371 return;
372
373 value = readl(base + TEGRA186_GPIO_OUTPUT_VALUE);
374 if (level == 0)
375 value &= ~TEGRA186_GPIO_OUTPUT_VALUE_HIGH;
376 else
377 value |= TEGRA186_GPIO_OUTPUT_VALUE_HIGH;
378
379 writel(value, base + TEGRA186_GPIO_OUTPUT_VALUE);
380 }
381
tegra186_gpio_set_config(struct gpio_chip * chip,unsigned int offset,unsigned long config)382 static int tegra186_gpio_set_config(struct gpio_chip *chip,
383 unsigned int offset,
384 unsigned long config)
385 {
386 struct tegra_gpio *gpio = gpiochip_get_data(chip);
387 u32 debounce, value;
388 void __iomem *base;
389
390 base = tegra186_gpio_get_base(gpio, offset);
391 if (base == NULL)
392 return -ENXIO;
393
394 if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
395 return -ENOTSUPP;
396
397 debounce = pinconf_to_config_argument(config);
398
399 /*
400 * The Tegra186 GPIO controller supports a maximum of 255 ms debounce
401 * time.
402 */
403 if (debounce > 255000)
404 return -EINVAL;
405
406 debounce = DIV_ROUND_UP(debounce, USEC_PER_MSEC);
407
408 value = TEGRA186_GPIO_DEBOUNCE_CONTROL_THRESHOLD(debounce);
409 writel(value, base + TEGRA186_GPIO_DEBOUNCE_CONTROL);
410
411 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
412 value |= TEGRA186_GPIO_ENABLE_CONFIG_DEBOUNCE;
413 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
414
415 return 0;
416 }
417
tegra186_gpio_add_pin_ranges(struct gpio_chip * chip)418 static int tegra186_gpio_add_pin_ranges(struct gpio_chip *chip)
419 {
420 struct tegra_gpio *gpio = gpiochip_get_data(chip);
421 struct pinctrl_dev *pctldev;
422 struct device_node *np;
423 unsigned int i, j;
424 int err;
425
426 if (!gpio->soc->pinmux || gpio->soc->num_pin_ranges == 0)
427 return 0;
428
429 np = of_find_compatible_node(NULL, NULL, gpio->soc->pinmux);
430 if (!np)
431 return -ENODEV;
432
433 pctldev = of_pinctrl_get(np);
434 of_node_put(np);
435 if (!pctldev)
436 return -EPROBE_DEFER;
437
438 for (i = 0; i < gpio->soc->num_pin_ranges; i++) {
439 unsigned int pin = gpio->soc->pin_ranges[i].offset, port;
440 const char *group = gpio->soc->pin_ranges[i].group;
441
442 port = pin / 8;
443 pin = pin % 8;
444
445 if (port >= gpio->soc->num_ports) {
446 dev_warn(chip->parent, "invalid port %u for %s\n",
447 port, group);
448 continue;
449 }
450
451 for (j = 0; j < port; j++)
452 pin += gpio->soc->ports[j].pins;
453
454 err = gpiochip_add_pingroup_range(chip, pctldev, pin, group);
455 if (err < 0)
456 return err;
457 }
458
459 return 0;
460 }
461
tegra186_gpio_of_xlate(struct gpio_chip * chip,const struct of_phandle_args * spec,u32 * flags)462 static int tegra186_gpio_of_xlate(struct gpio_chip *chip,
463 const struct of_phandle_args *spec,
464 u32 *flags)
465 {
466 struct tegra_gpio *gpio = gpiochip_get_data(chip);
467 unsigned int port, pin, i, offset = 0;
468
469 if (WARN_ON(chip->of_gpio_n_cells < 2))
470 return -EINVAL;
471
472 if (WARN_ON(spec->args_count < chip->of_gpio_n_cells))
473 return -EINVAL;
474
475 port = spec->args[0] / 8;
476 pin = spec->args[0] % 8;
477
478 if (port >= gpio->soc->num_ports) {
479 dev_err(chip->parent, "invalid port number: %u\n", port);
480 return -EINVAL;
481 }
482
483 for (i = 0; i < port; i++)
484 offset += gpio->soc->ports[i].pins;
485
486 if (flags)
487 *flags = spec->args[1];
488
489 return offset + pin;
490 }
491
492 #define to_tegra_gpio(x) container_of((x), struct tegra_gpio, gpio)
493
tegra186_irq_ack(struct irq_data * data)494 static void tegra186_irq_ack(struct irq_data *data)
495 {
496 struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
497 struct tegra_gpio *gpio = to_tegra_gpio(gc);
498 void __iomem *base;
499
500 base = tegra186_gpio_get_base(gpio, data->hwirq);
501 if (WARN_ON(base == NULL))
502 return;
503
504 writel(1, base + TEGRA186_GPIO_INTERRUPT_CLEAR);
505 }
506
tegra186_irq_mask(struct irq_data * data)507 static void tegra186_irq_mask(struct irq_data *data)
508 {
509 struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
510 struct tegra_gpio *gpio = to_tegra_gpio(gc);
511 void __iomem *base;
512 u32 value;
513
514 base = tegra186_gpio_get_base(gpio, data->hwirq);
515 if (WARN_ON(base == NULL))
516 return;
517
518 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
519 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT;
520 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
521
522 gpiochip_disable_irq(&gpio->gpio, data->hwirq);
523 }
524
tegra186_irq_unmask(struct irq_data * data)525 static void tegra186_irq_unmask(struct irq_data *data)
526 {
527 struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
528 struct tegra_gpio *gpio = to_tegra_gpio(gc);
529 void __iomem *base;
530 u32 value;
531
532 base = tegra186_gpio_get_base(gpio, data->hwirq);
533 if (WARN_ON(base == NULL))
534 return;
535
536 gpiochip_enable_irq(&gpio->gpio, data->hwirq);
537
538 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
539 value |= TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT;
540 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
541 }
542
tegra186_irq_set_type(struct irq_data * data,unsigned int type)543 static int tegra186_irq_set_type(struct irq_data *data, unsigned int type)
544 {
545 struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
546 struct tegra_gpio *gpio = to_tegra_gpio(gc);
547 void __iomem *base;
548 u32 value;
549
550 base = tegra186_gpio_get_base(gpio, data->hwirq);
551 if (WARN_ON(base == NULL))
552 return -ENODEV;
553
554 value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
555 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_MASK;
556 value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
557
558 switch (type & IRQ_TYPE_SENSE_MASK) {
559 case IRQ_TYPE_NONE:
560 break;
561
562 case IRQ_TYPE_EDGE_RISING:
563 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
564 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
565 break;
566
567 case IRQ_TYPE_EDGE_FALLING:
568 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
569 break;
570
571 case IRQ_TYPE_EDGE_BOTH:
572 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE;
573 break;
574
575 case IRQ_TYPE_LEVEL_HIGH:
576 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL;
577 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
578 break;
579
580 case IRQ_TYPE_LEVEL_LOW:
581 value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL;
582 break;
583
584 default:
585 return -EINVAL;
586 }
587
588 writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
589
590 if ((type & IRQ_TYPE_EDGE_BOTH) == 0)
591 irq_set_handler_locked(data, handle_level_irq);
592 else
593 irq_set_handler_locked(data, handle_edge_irq);
594
595 if (data->parent_data)
596 return irq_chip_set_type_parent(data, type);
597
598 return 0;
599 }
600
tegra186_irq_set_wake(struct irq_data * data,unsigned int on)601 static int tegra186_irq_set_wake(struct irq_data *data, unsigned int on)
602 {
603 if (data->parent_data)
604 return irq_chip_set_wake_parent(data, on);
605
606 return 0;
607 }
608
tegra186_irq_print_chip(struct irq_data * data,struct seq_file * p)609 static void tegra186_irq_print_chip(struct irq_data *data, struct seq_file *p)
610 {
611 struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
612
613 seq_puts(p, dev_name(gc->parent));
614 }
615
616 static const struct irq_chip tegra186_gpio_irq_chip = {
617 .irq_ack = tegra186_irq_ack,
618 .irq_mask = tegra186_irq_mask,
619 .irq_unmask = tegra186_irq_unmask,
620 .irq_set_type = tegra186_irq_set_type,
621 .irq_set_wake = tegra186_irq_set_wake,
622 .irq_print_chip = tegra186_irq_print_chip,
623 .flags = IRQCHIP_IMMUTABLE,
624 GPIOCHIP_IRQ_RESOURCE_HELPERS,
625 };
626
tegra186_gpio_irq(struct irq_desc * desc)627 static void tegra186_gpio_irq(struct irq_desc *desc)
628 {
629 struct tegra_gpio *gpio = irq_desc_get_handler_data(desc);
630 struct irq_domain *domain = gpio->gpio.irq.domain;
631 struct irq_chip *chip = irq_desc_get_chip(desc);
632 unsigned int parent = irq_desc_get_irq(desc);
633 unsigned int i, j, offset = 0;
634
635 chained_irq_enter(chip, desc);
636
637 for (i = 0; i < gpio->soc->num_ports; i++) {
638 const struct tegra_gpio_port *port = &gpio->soc->ports[i];
639 unsigned int pin;
640 unsigned long value;
641 void __iomem *base;
642
643 base = gpio->base + port->bank * 0x1000 + port->port * 0x200;
644
645 /* skip ports that are not associated with this bank */
646 for (j = 0; j < gpio->num_irqs_per_bank; j++) {
647 if (parent == gpio->irq[port->bank * gpio->num_irqs_per_bank + j])
648 break;
649 }
650
651 if (j == gpio->num_irqs_per_bank)
652 goto skip;
653
654 value = readl(base + TEGRA186_GPIO_INTERRUPT_STATUS(1));
655
656 for_each_set_bit(pin, &value, port->pins) {
657 int ret = generic_handle_domain_irq(domain, offset + pin);
658 WARN_RATELIMIT(ret, "hwirq = %d", offset + pin);
659 }
660
661 skip:
662 offset += port->pins;
663 }
664
665 chained_irq_exit(chip, desc);
666 }
667
tegra186_gpio_irq_domain_translate(struct irq_domain * domain,struct irq_fwspec * fwspec,unsigned long * hwirq,unsigned int * type)668 static int tegra186_gpio_irq_domain_translate(struct irq_domain *domain,
669 struct irq_fwspec *fwspec,
670 unsigned long *hwirq,
671 unsigned int *type)
672 {
673 struct tegra_gpio *gpio = gpiochip_get_data(domain->host_data);
674 unsigned int port, pin, i, offset = 0;
675
676 if (WARN_ON(gpio->gpio.of_gpio_n_cells < 2))
677 return -EINVAL;
678
679 if (WARN_ON(fwspec->param_count < gpio->gpio.of_gpio_n_cells))
680 return -EINVAL;
681
682 port = fwspec->param[0] / 8;
683 pin = fwspec->param[0] % 8;
684
685 if (port >= gpio->soc->num_ports)
686 return -EINVAL;
687
688 for (i = 0; i < port; i++)
689 offset += gpio->soc->ports[i].pins;
690
691 *type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
692 *hwirq = offset + pin;
693
694 return 0;
695 }
696
tegra186_gpio_populate_parent_fwspec(struct gpio_chip * chip,union gpio_irq_fwspec * gfwspec,unsigned int parent_hwirq,unsigned int parent_type)697 static int tegra186_gpio_populate_parent_fwspec(struct gpio_chip *chip,
698 union gpio_irq_fwspec *gfwspec,
699 unsigned int parent_hwirq,
700 unsigned int parent_type)
701 {
702 struct tegra_gpio *gpio = gpiochip_get_data(chip);
703 struct irq_fwspec *fwspec = &gfwspec->fwspec;
704
705 fwspec->fwnode = chip->irq.parent_domain->fwnode;
706 fwspec->param_count = 3;
707 fwspec->param[0] = gpio->soc->instance;
708 fwspec->param[1] = parent_hwirq;
709 fwspec->param[2] = parent_type;
710
711 return 0;
712 }
713
tegra186_gpio_child_to_parent_hwirq(struct gpio_chip * chip,unsigned int hwirq,unsigned int type,unsigned int * parent_hwirq,unsigned int * parent_type)714 static int tegra186_gpio_child_to_parent_hwirq(struct gpio_chip *chip,
715 unsigned int hwirq,
716 unsigned int type,
717 unsigned int *parent_hwirq,
718 unsigned int *parent_type)
719 {
720 *parent_hwirq = chip->irq.child_offset_to_irq(chip, hwirq);
721 *parent_type = type;
722
723 return 0;
724 }
725
tegra186_gpio_child_offset_to_irq(struct gpio_chip * chip,unsigned int offset)726 static unsigned int tegra186_gpio_child_offset_to_irq(struct gpio_chip *chip,
727 unsigned int offset)
728 {
729 struct tegra_gpio *gpio = gpiochip_get_data(chip);
730 unsigned int i;
731
732 for (i = 0; i < gpio->soc->num_ports; i++) {
733 if (offset < gpio->soc->ports[i].pins)
734 break;
735
736 offset -= gpio->soc->ports[i].pins;
737 }
738
739 return offset + i * 8;
740 }
741
742 static const struct of_device_id tegra186_pmc_of_match[] = {
743 { .compatible = "nvidia,tegra186-pmc" },
744 { .compatible = "nvidia,tegra194-pmc" },
745 { .compatible = "nvidia,tegra234-pmc" },
746 { /* sentinel */ }
747 };
748
tegra186_gpio_init_route_mapping(struct tegra_gpio * gpio)749 static void tegra186_gpio_init_route_mapping(struct tegra_gpio *gpio)
750 {
751 struct device *dev = gpio->gpio.parent;
752 unsigned int i;
753 u32 value;
754
755 for (i = 0; i < gpio->soc->num_ports; i++) {
756 const struct tegra_gpio_port *port = &gpio->soc->ports[i];
757 unsigned int offset, p = port->port;
758 void __iomem *base;
759
760 base = gpio->secure + port->bank * 0x1000 + 0x800;
761
762 value = readl(base + TEGRA186_GPIO_CTL_SCR);
763
764 /*
765 * For controllers that haven't been locked down yet, make
766 * sure to program the default interrupt route mapping.
767 */
768 if ((value & TEGRA186_GPIO_CTL_SCR_SEC_REN) == 0 &&
769 (value & TEGRA186_GPIO_CTL_SCR_SEC_WEN) == 0) {
770 /*
771 * On Tegra194 and later, each pin can be routed to one or more
772 * interrupts.
773 */
774 dev_dbg(dev, "programming default interrupt routing for port %s\n",
775 port->name);
776
777 offset = TEGRA186_GPIO_INT_ROUTE_MAPPING(p, 0);
778
779 /*
780 * By default we only want to route GPIO pins to IRQ 0. This works
781 * only under the assumption that we're running as the host kernel
782 * and hence all GPIO pins are owned by Linux.
783 *
784 * For cases where Linux is the guest OS, the hypervisor will have
785 * to configure the interrupt routing and pass only the valid
786 * interrupts via device tree.
787 */
788 value = readl(base + offset);
789 value = BIT(port->pins) - 1;
790 writel(value, base + offset);
791 }
792 }
793 }
794
tegra186_gpio_irqs_per_bank(struct tegra_gpio * gpio)795 static unsigned int tegra186_gpio_irqs_per_bank(struct tegra_gpio *gpio)
796 {
797 struct device *dev = gpio->gpio.parent;
798
799 if (gpio->num_irq > gpio->num_banks) {
800 if (gpio->num_irq % gpio->num_banks != 0)
801 goto error;
802 }
803
804 if (gpio->num_irq < gpio->num_banks)
805 goto error;
806
807 gpio->num_irqs_per_bank = gpio->num_irq / gpio->num_banks;
808
809 if (gpio->num_irqs_per_bank > gpio->soc->num_irqs_per_bank)
810 goto error;
811
812 return 0;
813
814 error:
815 dev_err(dev, "invalid number of interrupts (%u) for %u banks\n",
816 gpio->num_irq, gpio->num_banks);
817 return -EINVAL;
818 }
819
tegra186_gpio_probe(struct platform_device * pdev)820 static int tegra186_gpio_probe(struct platform_device *pdev)
821 {
822 unsigned int i, j, offset;
823 struct gpio_irq_chip *irq;
824 struct tegra_gpio *gpio;
825 struct device_node *np;
826 struct resource *res;
827 char **names;
828 int err;
829
830 gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
831 if (!gpio)
832 return -ENOMEM;
833
834 gpio->soc = device_get_match_data(&pdev->dev);
835 gpio->gpio.label = gpio->soc->name;
836 gpio->gpio.parent = &pdev->dev;
837
838 /* count the number of banks in the controller */
839 for (i = 0; i < gpio->soc->num_ports; i++)
840 if (gpio->soc->ports[i].bank > gpio->num_banks)
841 gpio->num_banks = gpio->soc->ports[i].bank;
842
843 gpio->num_banks++;
844
845 /* get register apertures */
846 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "security");
847 if (!res)
848 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
849 gpio->secure = devm_ioremap_resource(&pdev->dev, res);
850 if (IS_ERR(gpio->secure))
851 return PTR_ERR(gpio->secure);
852
853 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gpio");
854 if (!res)
855 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
856 gpio->base = devm_ioremap_resource(&pdev->dev, res);
857 if (IS_ERR(gpio->base))
858 return PTR_ERR(gpio->base);
859
860 err = platform_irq_count(pdev);
861 if (err < 0)
862 return err;
863
864 gpio->num_irq = err;
865
866 err = tegra186_gpio_irqs_per_bank(gpio);
867 if (err < 0)
868 return err;
869
870 gpio->irq = devm_kcalloc(&pdev->dev, gpio->num_irq, sizeof(*gpio->irq),
871 GFP_KERNEL);
872 if (!gpio->irq)
873 return -ENOMEM;
874
875 for (i = 0; i < gpio->num_irq; i++) {
876 err = platform_get_irq(pdev, i);
877 if (err < 0)
878 return err;
879
880 gpio->irq[i] = err;
881 }
882
883 gpio->gpio.request = gpiochip_generic_request;
884 gpio->gpio.free = gpiochip_generic_free;
885 gpio->gpio.get_direction = tegra186_gpio_get_direction;
886 gpio->gpio.direction_input = tegra186_gpio_direction_input;
887 gpio->gpio.direction_output = tegra186_gpio_direction_output;
888 gpio->gpio.get = tegra186_gpio_get;
889 gpio->gpio.set = tegra186_gpio_set;
890 gpio->gpio.set_config = tegra186_gpio_set_config;
891 gpio->gpio.add_pin_ranges = tegra186_gpio_add_pin_ranges;
892 gpio->gpio.init_valid_mask = tegra186_init_valid_mask;
893 if (gpio->soc->has_gte) {
894 gpio->gpio.en_hw_timestamp = tegra186_gpio_en_hw_ts;
895 gpio->gpio.dis_hw_timestamp = tegra186_gpio_dis_hw_ts;
896 }
897
898 gpio->gpio.base = -1;
899
900 for (i = 0; i < gpio->soc->num_ports; i++)
901 gpio->gpio.ngpio += gpio->soc->ports[i].pins;
902
903 names = devm_kcalloc(gpio->gpio.parent, gpio->gpio.ngpio,
904 sizeof(*names), GFP_KERNEL);
905 if (!names)
906 return -ENOMEM;
907
908 for (i = 0, offset = 0; i < gpio->soc->num_ports; i++) {
909 const struct tegra_gpio_port *port = &gpio->soc->ports[i];
910 char *name;
911
912 for (j = 0; j < port->pins; j++) {
913 name = devm_kasprintf(gpio->gpio.parent, GFP_KERNEL,
914 "P%s.%02x", port->name, j);
915 if (!name)
916 return -ENOMEM;
917
918 names[offset + j] = name;
919 }
920
921 offset += port->pins;
922 }
923
924 gpio->gpio.names = (const char * const *)names;
925
926 #if defined(CONFIG_OF_GPIO)
927 gpio->gpio.of_gpio_n_cells = 2;
928 gpio->gpio.of_xlate = tegra186_gpio_of_xlate;
929 #endif /* CONFIG_OF_GPIO */
930
931 irq = &gpio->gpio.irq;
932 gpio_irq_chip_set_chip(irq, &tegra186_gpio_irq_chip);
933 irq->fwnode = dev_fwnode(&pdev->dev);
934 irq->child_to_parent_hwirq = tegra186_gpio_child_to_parent_hwirq;
935 irq->populate_parent_alloc_arg = tegra186_gpio_populate_parent_fwspec;
936 irq->child_offset_to_irq = tegra186_gpio_child_offset_to_irq;
937 irq->child_irq_domain_ops.translate = tegra186_gpio_irq_domain_translate;
938 irq->handler = handle_simple_irq;
939 irq->default_type = IRQ_TYPE_NONE;
940 irq->parent_handler = tegra186_gpio_irq;
941 irq->parent_handler_data = gpio;
942 irq->num_parents = gpio->num_irq;
943
944 /*
945 * To simplify things, use a single interrupt per bank for now. Some
946 * chips support up to 8 interrupts per bank, which can be useful to
947 * distribute the load and decrease the processing latency for GPIOs
948 * but it also requires a more complicated interrupt routing than we
949 * currently program.
950 */
951 if (gpio->num_irqs_per_bank > 1) {
952 irq->parents = devm_kcalloc(&pdev->dev, gpio->num_banks,
953 sizeof(*irq->parents), GFP_KERNEL);
954 if (!irq->parents)
955 return -ENOMEM;
956
957 for (i = 0; i < gpio->num_banks; i++)
958 irq->parents[i] = gpio->irq[i * gpio->num_irqs_per_bank];
959
960 irq->num_parents = gpio->num_banks;
961 } else {
962 irq->num_parents = gpio->num_irq;
963 irq->parents = gpio->irq;
964 }
965
966 if (gpio->soc->num_irqs_per_bank > 1)
967 tegra186_gpio_init_route_mapping(gpio);
968
969 np = of_find_matching_node(NULL, tegra186_pmc_of_match);
970 if (np) {
971 if (of_device_is_available(np)) {
972 irq->parent_domain = irq_find_host(np);
973 of_node_put(np);
974
975 if (!irq->parent_domain)
976 return -EPROBE_DEFER;
977 } else {
978 of_node_put(np);
979 }
980 }
981
982 irq->map = devm_kcalloc(&pdev->dev, gpio->gpio.ngpio,
983 sizeof(*irq->map), GFP_KERNEL);
984 if (!irq->map)
985 return -ENOMEM;
986
987 for (i = 0, offset = 0; i < gpio->soc->num_ports; i++) {
988 const struct tegra_gpio_port *port = &gpio->soc->ports[i];
989
990 for (j = 0; j < port->pins; j++)
991 irq->map[offset + j] = irq->parents[port->bank];
992
993 offset += port->pins;
994 }
995
996 return devm_gpiochip_add_data(&pdev->dev, &gpio->gpio, gpio);
997 }
998
999 #define TEGRA186_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
1000 [TEGRA186_MAIN_GPIO_PORT_##_name] = { \
1001 .name = #_name, \
1002 .bank = _bank, \
1003 .port = _port, \
1004 .pins = _pins, \
1005 }
1006
1007 static const struct tegra_gpio_port tegra186_main_ports[] = {
1008 TEGRA186_MAIN_GPIO_PORT( A, 2, 0, 7),
1009 TEGRA186_MAIN_GPIO_PORT( B, 3, 0, 7),
1010 TEGRA186_MAIN_GPIO_PORT( C, 3, 1, 7),
1011 TEGRA186_MAIN_GPIO_PORT( D, 3, 2, 6),
1012 TEGRA186_MAIN_GPIO_PORT( E, 2, 1, 8),
1013 TEGRA186_MAIN_GPIO_PORT( F, 2, 2, 6),
1014 TEGRA186_MAIN_GPIO_PORT( G, 4, 1, 6),
1015 TEGRA186_MAIN_GPIO_PORT( H, 1, 0, 7),
1016 TEGRA186_MAIN_GPIO_PORT( I, 0, 4, 8),
1017 TEGRA186_MAIN_GPIO_PORT( J, 5, 0, 8),
1018 TEGRA186_MAIN_GPIO_PORT( K, 5, 1, 1),
1019 TEGRA186_MAIN_GPIO_PORT( L, 1, 1, 8),
1020 TEGRA186_MAIN_GPIO_PORT( M, 5, 3, 6),
1021 TEGRA186_MAIN_GPIO_PORT( N, 0, 0, 7),
1022 TEGRA186_MAIN_GPIO_PORT( O, 0, 1, 4),
1023 TEGRA186_MAIN_GPIO_PORT( P, 4, 0, 7),
1024 TEGRA186_MAIN_GPIO_PORT( Q, 0, 2, 6),
1025 TEGRA186_MAIN_GPIO_PORT( R, 0, 5, 6),
1026 TEGRA186_MAIN_GPIO_PORT( T, 0, 3, 4),
1027 TEGRA186_MAIN_GPIO_PORT( X, 1, 2, 8),
1028 TEGRA186_MAIN_GPIO_PORT( Y, 1, 3, 7),
1029 TEGRA186_MAIN_GPIO_PORT(BB, 2, 3, 2),
1030 TEGRA186_MAIN_GPIO_PORT(CC, 5, 2, 4),
1031 };
1032
1033 static const struct tegra_gpio_soc tegra186_main_soc = {
1034 .num_ports = ARRAY_SIZE(tegra186_main_ports),
1035 .ports = tegra186_main_ports,
1036 .name = "tegra186-gpio",
1037 .instance = 0,
1038 .num_irqs_per_bank = 1,
1039 .has_vm_support = false,
1040 };
1041
1042 #define TEGRA186_AON_GPIO_PORT(_name, _bank, _port, _pins) \
1043 [TEGRA186_AON_GPIO_PORT_##_name] = { \
1044 .name = #_name, \
1045 .bank = _bank, \
1046 .port = _port, \
1047 .pins = _pins, \
1048 }
1049
1050 static const struct tegra_gpio_port tegra186_aon_ports[] = {
1051 TEGRA186_AON_GPIO_PORT( S, 0, 1, 5),
1052 TEGRA186_AON_GPIO_PORT( U, 0, 2, 6),
1053 TEGRA186_AON_GPIO_PORT( V, 0, 4, 8),
1054 TEGRA186_AON_GPIO_PORT( W, 0, 5, 8),
1055 TEGRA186_AON_GPIO_PORT( Z, 0, 7, 4),
1056 TEGRA186_AON_GPIO_PORT(AA, 0, 6, 8),
1057 TEGRA186_AON_GPIO_PORT(EE, 0, 3, 3),
1058 TEGRA186_AON_GPIO_PORT(FF, 0, 0, 5),
1059 };
1060
1061 static const struct tegra_gpio_soc tegra186_aon_soc = {
1062 .num_ports = ARRAY_SIZE(tegra186_aon_ports),
1063 .ports = tegra186_aon_ports,
1064 .name = "tegra186-gpio-aon",
1065 .instance = 1,
1066 .num_irqs_per_bank = 1,
1067 .has_vm_support = false,
1068 };
1069
1070 #define TEGRA194_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
1071 [TEGRA194_MAIN_GPIO_PORT_##_name] = { \
1072 .name = #_name, \
1073 .bank = _bank, \
1074 .port = _port, \
1075 .pins = _pins, \
1076 }
1077
1078 static const struct tegra_gpio_port tegra194_main_ports[] = {
1079 TEGRA194_MAIN_GPIO_PORT( A, 1, 2, 8),
1080 TEGRA194_MAIN_GPIO_PORT( B, 4, 7, 2),
1081 TEGRA194_MAIN_GPIO_PORT( C, 4, 3, 8),
1082 TEGRA194_MAIN_GPIO_PORT( D, 4, 4, 4),
1083 TEGRA194_MAIN_GPIO_PORT( E, 4, 5, 8),
1084 TEGRA194_MAIN_GPIO_PORT( F, 4, 6, 6),
1085 TEGRA194_MAIN_GPIO_PORT( G, 4, 0, 8),
1086 TEGRA194_MAIN_GPIO_PORT( H, 4, 1, 8),
1087 TEGRA194_MAIN_GPIO_PORT( I, 4, 2, 5),
1088 TEGRA194_MAIN_GPIO_PORT( J, 5, 1, 6),
1089 TEGRA194_MAIN_GPIO_PORT( K, 3, 0, 8),
1090 TEGRA194_MAIN_GPIO_PORT( L, 3, 1, 4),
1091 TEGRA194_MAIN_GPIO_PORT( M, 2, 3, 8),
1092 TEGRA194_MAIN_GPIO_PORT( N, 2, 4, 3),
1093 TEGRA194_MAIN_GPIO_PORT( O, 5, 0, 6),
1094 TEGRA194_MAIN_GPIO_PORT( P, 2, 5, 8),
1095 TEGRA194_MAIN_GPIO_PORT( Q, 2, 6, 8),
1096 TEGRA194_MAIN_GPIO_PORT( R, 2, 7, 6),
1097 TEGRA194_MAIN_GPIO_PORT( S, 3, 3, 8),
1098 TEGRA194_MAIN_GPIO_PORT( T, 3, 4, 8),
1099 TEGRA194_MAIN_GPIO_PORT( U, 3, 5, 1),
1100 TEGRA194_MAIN_GPIO_PORT( V, 1, 0, 8),
1101 TEGRA194_MAIN_GPIO_PORT( W, 1, 1, 2),
1102 TEGRA194_MAIN_GPIO_PORT( X, 2, 0, 8),
1103 TEGRA194_MAIN_GPIO_PORT( Y, 2, 1, 8),
1104 TEGRA194_MAIN_GPIO_PORT( Z, 2, 2, 8),
1105 TEGRA194_MAIN_GPIO_PORT(FF, 3, 2, 2),
1106 TEGRA194_MAIN_GPIO_PORT(GG, 0, 0, 2)
1107 };
1108
1109 static const struct tegra186_pin_range tegra194_main_pin_ranges[] = {
1110 { TEGRA194_MAIN_GPIO(GG, 0), "pex_l5_clkreq_n_pgg0" },
1111 { TEGRA194_MAIN_GPIO(GG, 1), "pex_l5_rst_n_pgg1" },
1112 };
1113
1114 static const struct tegra_gpio_soc tegra194_main_soc = {
1115 .num_ports = ARRAY_SIZE(tegra194_main_ports),
1116 .ports = tegra194_main_ports,
1117 .name = "tegra194-gpio",
1118 .instance = 0,
1119 .num_irqs_per_bank = 8,
1120 .num_pin_ranges = ARRAY_SIZE(tegra194_main_pin_ranges),
1121 .pin_ranges = tegra194_main_pin_ranges,
1122 .pinmux = "nvidia,tegra194-pinmux",
1123 .has_vm_support = true,
1124 };
1125
1126 #define TEGRA194_AON_GPIO_PORT(_name, _bank, _port, _pins) \
1127 [TEGRA194_AON_GPIO_PORT_##_name] = { \
1128 .name = #_name, \
1129 .bank = _bank, \
1130 .port = _port, \
1131 .pins = _pins, \
1132 }
1133
1134 static const struct tegra_gpio_port tegra194_aon_ports[] = {
1135 TEGRA194_AON_GPIO_PORT(AA, 0, 3, 8),
1136 TEGRA194_AON_GPIO_PORT(BB, 0, 4, 4),
1137 TEGRA194_AON_GPIO_PORT(CC, 0, 1, 8),
1138 TEGRA194_AON_GPIO_PORT(DD, 0, 2, 3),
1139 TEGRA194_AON_GPIO_PORT(EE, 0, 0, 7)
1140 };
1141
1142 static const struct tegra_gpio_soc tegra194_aon_soc = {
1143 .num_ports = ARRAY_SIZE(tegra194_aon_ports),
1144 .ports = tegra194_aon_ports,
1145 .name = "tegra194-gpio-aon",
1146 .instance = 1,
1147 .num_irqs_per_bank = 8,
1148 .has_gte = true,
1149 .has_vm_support = false,
1150 };
1151
1152 #define TEGRA234_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
1153 [TEGRA234_MAIN_GPIO_PORT_##_name] = { \
1154 .name = #_name, \
1155 .bank = _bank, \
1156 .port = _port, \
1157 .pins = _pins, \
1158 }
1159
1160 static const struct tegra_gpio_port tegra234_main_ports[] = {
1161 TEGRA234_MAIN_GPIO_PORT( A, 0, 0, 8),
1162 TEGRA234_MAIN_GPIO_PORT( B, 0, 3, 1),
1163 TEGRA234_MAIN_GPIO_PORT( C, 5, 1, 8),
1164 TEGRA234_MAIN_GPIO_PORT( D, 5, 2, 4),
1165 TEGRA234_MAIN_GPIO_PORT( E, 5, 3, 8),
1166 TEGRA234_MAIN_GPIO_PORT( F, 5, 4, 6),
1167 TEGRA234_MAIN_GPIO_PORT( G, 4, 0, 8),
1168 TEGRA234_MAIN_GPIO_PORT( H, 4, 1, 8),
1169 TEGRA234_MAIN_GPIO_PORT( I, 4, 2, 7),
1170 TEGRA234_MAIN_GPIO_PORT( J, 5, 0, 6),
1171 TEGRA234_MAIN_GPIO_PORT( K, 3, 0, 8),
1172 TEGRA234_MAIN_GPIO_PORT( L, 3, 1, 4),
1173 TEGRA234_MAIN_GPIO_PORT( M, 2, 0, 8),
1174 TEGRA234_MAIN_GPIO_PORT( N, 2, 1, 8),
1175 TEGRA234_MAIN_GPIO_PORT( P, 2, 2, 8),
1176 TEGRA234_MAIN_GPIO_PORT( Q, 2, 3, 8),
1177 TEGRA234_MAIN_GPIO_PORT( R, 2, 4, 6),
1178 TEGRA234_MAIN_GPIO_PORT( X, 1, 0, 8),
1179 TEGRA234_MAIN_GPIO_PORT( Y, 1, 1, 8),
1180 TEGRA234_MAIN_GPIO_PORT( Z, 1, 2, 8),
1181 TEGRA234_MAIN_GPIO_PORT(AC, 0, 1, 8),
1182 TEGRA234_MAIN_GPIO_PORT(AD, 0, 2, 4),
1183 TEGRA234_MAIN_GPIO_PORT(AE, 3, 3, 2),
1184 TEGRA234_MAIN_GPIO_PORT(AF, 3, 4, 4),
1185 TEGRA234_MAIN_GPIO_PORT(AG, 3, 2, 8),
1186 };
1187
1188 static const struct tegra_gpio_soc tegra234_main_soc = {
1189 .num_ports = ARRAY_SIZE(tegra234_main_ports),
1190 .ports = tegra234_main_ports,
1191 .name = "tegra234-gpio",
1192 .instance = 0,
1193 .num_irqs_per_bank = 8,
1194 .has_vm_support = true,
1195 };
1196
1197 #define TEGRA234_AON_GPIO_PORT(_name, _bank, _port, _pins) \
1198 [TEGRA234_AON_GPIO_PORT_##_name] = { \
1199 .name = #_name, \
1200 .bank = _bank, \
1201 .port = _port, \
1202 .pins = _pins, \
1203 }
1204
1205 static const struct tegra_gpio_port tegra234_aon_ports[] = {
1206 TEGRA234_AON_GPIO_PORT(AA, 0, 4, 8),
1207 TEGRA234_AON_GPIO_PORT(BB, 0, 5, 4),
1208 TEGRA234_AON_GPIO_PORT(CC, 0, 2, 8),
1209 TEGRA234_AON_GPIO_PORT(DD, 0, 3, 3),
1210 TEGRA234_AON_GPIO_PORT(EE, 0, 0, 8),
1211 TEGRA234_AON_GPIO_PORT(GG, 0, 1, 1),
1212 };
1213
1214 static const struct tegra_gpio_soc tegra234_aon_soc = {
1215 .num_ports = ARRAY_SIZE(tegra234_aon_ports),
1216 .ports = tegra234_aon_ports,
1217 .name = "tegra234-gpio-aon",
1218 .instance = 1,
1219 .num_irqs_per_bank = 8,
1220 .has_gte = true,
1221 .has_vm_support = false,
1222 };
1223
1224 #define TEGRA241_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
1225 [TEGRA241_MAIN_GPIO_PORT_##_name] = { \
1226 .name = #_name, \
1227 .bank = _bank, \
1228 .port = _port, \
1229 .pins = _pins, \
1230 }
1231
1232 static const struct tegra_gpio_port tegra241_main_ports[] = {
1233 TEGRA241_MAIN_GPIO_PORT(A, 0, 0, 8),
1234 TEGRA241_MAIN_GPIO_PORT(B, 0, 1, 8),
1235 TEGRA241_MAIN_GPIO_PORT(C, 0, 2, 2),
1236 TEGRA241_MAIN_GPIO_PORT(D, 0, 3, 6),
1237 TEGRA241_MAIN_GPIO_PORT(E, 0, 4, 8),
1238 TEGRA241_MAIN_GPIO_PORT(F, 1, 0, 8),
1239 TEGRA241_MAIN_GPIO_PORT(G, 1, 1, 8),
1240 TEGRA241_MAIN_GPIO_PORT(H, 1, 2, 8),
1241 TEGRA241_MAIN_GPIO_PORT(J, 1, 3, 8),
1242 TEGRA241_MAIN_GPIO_PORT(K, 1, 4, 4),
1243 TEGRA241_MAIN_GPIO_PORT(L, 1, 5, 6),
1244 };
1245
1246 static const struct tegra_gpio_soc tegra241_main_soc = {
1247 .num_ports = ARRAY_SIZE(tegra241_main_ports),
1248 .ports = tegra241_main_ports,
1249 .name = "tegra241-gpio",
1250 .instance = 0,
1251 .num_irqs_per_bank = 8,
1252 .has_vm_support = false,
1253 };
1254
1255 #define TEGRA241_AON_GPIO_PORT(_name, _bank, _port, _pins) \
1256 [TEGRA241_AON_GPIO_PORT_##_name] = { \
1257 .name = #_name, \
1258 .bank = _bank, \
1259 .port = _port, \
1260 .pins = _pins, \
1261 }
1262
1263 static const struct tegra_gpio_port tegra241_aon_ports[] = {
1264 TEGRA241_AON_GPIO_PORT(AA, 0, 0, 8),
1265 TEGRA241_AON_GPIO_PORT(BB, 0, 0, 4),
1266 };
1267
1268 static const struct tegra_gpio_soc tegra241_aon_soc = {
1269 .num_ports = ARRAY_SIZE(tegra241_aon_ports),
1270 .ports = tegra241_aon_ports,
1271 .name = "tegra241-gpio-aon",
1272 .instance = 1,
1273 .num_irqs_per_bank = 8,
1274 .has_vm_support = false,
1275 };
1276
1277 static const struct of_device_id tegra186_gpio_of_match[] = {
1278 {
1279 .compatible = "nvidia,tegra186-gpio",
1280 .data = &tegra186_main_soc
1281 }, {
1282 .compatible = "nvidia,tegra186-gpio-aon",
1283 .data = &tegra186_aon_soc
1284 }, {
1285 .compatible = "nvidia,tegra194-gpio",
1286 .data = &tegra194_main_soc
1287 }, {
1288 .compatible = "nvidia,tegra194-gpio-aon",
1289 .data = &tegra194_aon_soc
1290 }, {
1291 .compatible = "nvidia,tegra234-gpio",
1292 .data = &tegra234_main_soc
1293 }, {
1294 .compatible = "nvidia,tegra234-gpio-aon",
1295 .data = &tegra234_aon_soc
1296 }, {
1297 /* sentinel */
1298 }
1299 };
1300 MODULE_DEVICE_TABLE(of, tegra186_gpio_of_match);
1301
1302 static const struct acpi_device_id tegra186_gpio_acpi_match[] = {
1303 { .id = "NVDA0108", .driver_data = (kernel_ulong_t)&tegra186_main_soc },
1304 { .id = "NVDA0208", .driver_data = (kernel_ulong_t)&tegra186_aon_soc },
1305 { .id = "NVDA0308", .driver_data = (kernel_ulong_t)&tegra194_main_soc },
1306 { .id = "NVDA0408", .driver_data = (kernel_ulong_t)&tegra194_aon_soc },
1307 { .id = "NVDA0508", .driver_data = (kernel_ulong_t)&tegra241_main_soc },
1308 { .id = "NVDA0608", .driver_data = (kernel_ulong_t)&tegra241_aon_soc },
1309 {}
1310 };
1311 MODULE_DEVICE_TABLE(acpi, tegra186_gpio_acpi_match);
1312
1313 static struct platform_driver tegra186_gpio_driver = {
1314 .driver = {
1315 .name = "tegra186-gpio",
1316 .of_match_table = tegra186_gpio_of_match,
1317 .acpi_match_table = tegra186_gpio_acpi_match,
1318 },
1319 .probe = tegra186_gpio_probe,
1320 };
1321 module_platform_driver(tegra186_gpio_driver);
1322
1323 MODULE_DESCRIPTION("NVIDIA Tegra186 GPIO controller driver");
1324 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
1325 MODULE_LICENSE("GPL v2");
1326