1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Renesas RZ/G2L Pin Control and GPIO driver core
4 *
5 * Copyright (C) 2021 Renesas Electronics Corporation.
6 */
7
8 #include <linux/bitops.h>
9 #include <linux/clk.h>
10 #include <linux/gpio/driver.h>
11 #include <linux/interrupt.h>
12 #include <linux/io.h>
13 #include <linux/module.h>
14 #include <linux/mutex.h>
15 #include <linux/of.h>
16 #include <linux/of_irq.h>
17 #include <linux/platform_device.h>
18 #include <linux/seq_file.h>
19 #include <linux/spinlock.h>
20
21 #include <linux/pinctrl/consumer.h>
22 #include <linux/pinctrl/pinconf-generic.h>
23 #include <linux/pinctrl/pinconf.h>
24 #include <linux/pinctrl/pinctrl.h>
25 #include <linux/pinctrl/pinmux.h>
26
27 #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
28
29 #include "../core.h"
30 #include "../pinconf.h"
31 #include "../pinmux.h"
32
33 #define DRV_NAME "pinctrl-rzg2l"
34
35 /*
36 * Use 16 lower bits [15:0] for pin identifier
37 * Use 16 higher bits [31:16] for pin mux function
38 */
39 #define MUX_PIN_ID_MASK GENMASK(15, 0)
40 #define MUX_FUNC_MASK GENMASK(31, 16)
41 #define MUX_FUNC_OFFS 16
42 #define MUX_FUNC(pinconf) (((pinconf) & MUX_FUNC_MASK) >> MUX_FUNC_OFFS)
43
44 /* PIN capabilities */
45 #define PIN_CFG_IOLH_A BIT(0)
46 #define PIN_CFG_IOLH_B BIT(1)
47 #define PIN_CFG_SR BIT(2)
48 #define PIN_CFG_IEN BIT(3)
49 #define PIN_CFG_PUPD BIT(4)
50 #define PIN_CFG_IO_VMC_SD0 BIT(5)
51 #define PIN_CFG_IO_VMC_SD1 BIT(6)
52 #define PIN_CFG_IO_VMC_QSPI BIT(7)
53 #define PIN_CFG_IO_VMC_ETH0 BIT(8)
54 #define PIN_CFG_IO_VMC_ETH1 BIT(9)
55 #define PIN_CFG_FILONOFF BIT(10)
56 #define PIN_CFG_FILNUM BIT(11)
57 #define PIN_CFG_FILCLKSEL BIT(12)
58 #define PIN_CFG_IOLH_C BIT(13)
59 #define PIN_CFG_SOFT_PS BIT(14)
60 #define PIN_CFG_OEN BIT(15)
61
62 #define RZG2L_MPXED_COMMON_PIN_FUNCS(group) \
63 (PIN_CFG_IOLH_##group | \
64 PIN_CFG_PUPD | \
65 PIN_CFG_FILONOFF | \
66 PIN_CFG_FILNUM | \
67 PIN_CFG_FILCLKSEL)
68
69 #define RZG2L_MPXED_PIN_FUNCS (RZG2L_MPXED_COMMON_PIN_FUNCS(A) | \
70 PIN_CFG_SR)
71
72 #define RZG3S_MPXED_PIN_FUNCS(group) (RZG2L_MPXED_COMMON_PIN_FUNCS(group) | \
73 PIN_CFG_SOFT_PS)
74
75 #define RZG2L_MPXED_ETH_PIN_FUNCS(x) ((x) | \
76 PIN_CFG_FILONOFF | \
77 PIN_CFG_FILNUM | \
78 PIN_CFG_FILCLKSEL)
79
80 /*
81 * n indicates number of pins in the port, a is the register index
82 * and f is pin configuration capabilities supported.
83 */
84 #define RZG2L_GPIO_PORT_PACK(n, a, f) (((n) << 28) | ((a) << 20) | (f))
85 #define RZG2L_GPIO_PORT_GET_PINCNT(x) (((x) & GENMASK(30, 28)) >> 28)
86
87 /*
88 * BIT(31) indicates dedicated pin, p is the register index while
89 * referencing to SR/IEN/IOLH/FILxx registers, b is the register bits
90 * (b * 8) and f is the pin configuration capabilities supported.
91 */
92 #define RZG2L_SINGLE_PIN BIT(31)
93 #define RZG2L_SINGLE_PIN_PACK(p, b, f) (RZG2L_SINGLE_PIN | \
94 ((p) << 24) | ((b) << 20) | (f))
95 #define RZG2L_SINGLE_PIN_GET_BIT(x) (((x) & GENMASK(22, 20)) >> 20)
96
97 #define RZG2L_PIN_CFG_TO_CAPS(cfg) ((cfg) & GENMASK(19, 0))
98 #define RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg) ((cfg) & RZG2L_SINGLE_PIN ? \
99 (((cfg) & GENMASK(30, 24)) >> 24) : \
100 (((cfg) & GENMASK(26, 20)) >> 20))
101
102 #define P(off) (0x0000 + (off))
103 #define PM(off) (0x0100 + (off) * 2)
104 #define PMC(off) (0x0200 + (off))
105 #define PFC(off) (0x0400 + (off) * 4)
106 #define PIN(off) (0x0800 + (off))
107 #define IOLH(off) (0x1000 + (off) * 8)
108 #define IEN(off) (0x1800 + (off) * 8)
109 #define ISEL(off) (0x2C00 + (off) * 8)
110 #define SD_CH(off, ch) ((off) + (ch) * 4)
111 #define ETH_POC(off, ch) ((off) + (ch) * 4)
112 #define QSPI (0x3008)
113 #define ETH_MODE (0x3018)
114
115 #define PVDD_2500 2 /* I/O domain voltage 2.5V */
116 #define PVDD_1800 1 /* I/O domain voltage <= 1.8V */
117 #define PVDD_3300 0 /* I/O domain voltage >= 3.3V */
118
119 #define PWPR_B0WI BIT(7) /* Bit Write Disable */
120 #define PWPR_PFCWE BIT(6) /* PFC Register Write Enable */
121
122 #define PM_MASK 0x03
123 #define PFC_MASK 0x07
124 #define IEN_MASK 0x01
125 #define IOLH_MASK 0x03
126
127 #define PM_INPUT 0x1
128 #define PM_OUTPUT 0x2
129
130 #define RZG2L_PIN_ID_TO_PORT(id) ((id) / RZG2L_PINS_PER_PORT)
131 #define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT)
132
133 #define RZG2L_TINT_MAX_INTERRUPT 32
134 #define RZG2L_TINT_IRQ_START_INDEX 9
135 #define RZG2L_PACK_HWIRQ(t, i) (((t) << 16) | (i))
136
137 /**
138 * struct rzg2l_register_offsets - specific register offsets
139 * @pwpr: PWPR register offset
140 * @sd_ch: SD_CH register offset
141 * @eth_poc: ETH_POC register offset
142 */
143 struct rzg2l_register_offsets {
144 u16 pwpr;
145 u16 sd_ch;
146 u16 eth_poc;
147 };
148
149 /**
150 * enum rzg2l_iolh_index - starting indices in IOLH specific arrays
151 * @RZG2L_IOLH_IDX_1V8: starting index for 1V8 power source
152 * @RZG2L_IOLH_IDX_2V5: starting index for 2V5 power source
153 * @RZG2L_IOLH_IDX_3V3: starting index for 3V3 power source
154 * @RZG2L_IOLH_IDX_MAX: maximum index
155 */
156 enum rzg2l_iolh_index {
157 RZG2L_IOLH_IDX_1V8 = 0,
158 RZG2L_IOLH_IDX_2V5 = 4,
159 RZG2L_IOLH_IDX_3V3 = 8,
160 RZG2L_IOLH_IDX_MAX = 12,
161 };
162
163 /* Maximum number of driver strength entries per power source. */
164 #define RZG2L_IOLH_MAX_DS_ENTRIES (4)
165
166 /**
167 * struct rzg2l_hwcfg - hardware configuration data structure
168 * @regs: hardware specific register offsets
169 * @iolh_groupa_ua: IOLH group A uA specific values
170 * @iolh_groupb_ua: IOLH group B uA specific values
171 * @iolh_groupc_ua: IOLH group C uA specific values
172 * @iolh_groupb_oi: IOLH group B output impedance specific values
173 * @drive_strength_ua: drive strength in uA is supported (otherwise mA is supported)
174 * @func_base: base number for port function (see register PFC)
175 * @oen_max_pin: the maximum pin number supporting output enable
176 * @oen_max_port: the maximum port number supporting output enable
177 */
178 struct rzg2l_hwcfg {
179 const struct rzg2l_register_offsets regs;
180 u16 iolh_groupa_ua[RZG2L_IOLH_IDX_MAX];
181 u16 iolh_groupb_ua[RZG2L_IOLH_IDX_MAX];
182 u16 iolh_groupc_ua[RZG2L_IOLH_IDX_MAX];
183 u16 iolh_groupb_oi[4];
184 bool drive_strength_ua;
185 u8 func_base;
186 u8 oen_max_pin;
187 u8 oen_max_port;
188 };
189
190 struct rzg2l_dedicated_configs {
191 const char *name;
192 u32 config;
193 };
194
195 struct rzg2l_pinctrl_data {
196 const char * const *port_pins;
197 const u32 *port_pin_configs;
198 unsigned int n_ports;
199 const struct rzg2l_dedicated_configs *dedicated_pins;
200 unsigned int n_port_pins;
201 unsigned int n_dedicated_pins;
202 const struct rzg2l_hwcfg *hwcfg;
203 };
204
205 /**
206 * struct rzg2l_pinctrl_pin_settings - pin data
207 * @power_source: power source
208 * @drive_strength_ua: drive strength (in micro amps)
209 */
210 struct rzg2l_pinctrl_pin_settings {
211 u16 power_source;
212 u16 drive_strength_ua;
213 };
214
215 struct rzg2l_pinctrl {
216 struct pinctrl_dev *pctl;
217 struct pinctrl_desc desc;
218 struct pinctrl_pin_desc *pins;
219
220 const struct rzg2l_pinctrl_data *data;
221 void __iomem *base;
222 struct device *dev;
223
224 struct gpio_chip gpio_chip;
225 struct pinctrl_gpio_range gpio_range;
226 DECLARE_BITMAP(tint_slot, RZG2L_TINT_MAX_INTERRUPT);
227 spinlock_t bitmap_lock; /* protect tint_slot bitmap */
228 unsigned int hwirq[RZG2L_TINT_MAX_INTERRUPT];
229
230 spinlock_t lock; /* lock read/write registers */
231 struct mutex mutex; /* serialize adding groups and functions */
232
233 struct rzg2l_pinctrl_pin_settings *settings;
234 };
235
236 static const u16 available_ps[] = { 1800, 2500, 3300 };
237
rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl * pctrl,u8 pin,u8 off,u8 func)238 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
239 u8 pin, u8 off, u8 func)
240 {
241 const struct rzg2l_register_offsets *regs = &pctrl->data->hwcfg->regs;
242 unsigned long flags;
243 u32 reg;
244
245 spin_lock_irqsave(&pctrl->lock, flags);
246
247 /* Set pin to 'Non-use (Hi-Z input protection)' */
248 reg = readw(pctrl->base + PM(off));
249 reg &= ~(PM_MASK << (pin * 2));
250 writew(reg, pctrl->base + PM(off));
251
252 /* Temporarily switch to GPIO mode with PMC register */
253 reg = readb(pctrl->base + PMC(off));
254 writeb(reg & ~BIT(pin), pctrl->base + PMC(off));
255
256 /* Set the PWPR register to allow PFC register to write */
257 writel(0x0, pctrl->base + regs->pwpr); /* B0WI=0, PFCWE=0 */
258 writel(PWPR_PFCWE, pctrl->base + regs->pwpr); /* B0WI=0, PFCWE=1 */
259
260 /* Select Pin function mode with PFC register */
261 reg = readl(pctrl->base + PFC(off));
262 reg &= ~(PFC_MASK << (pin * 4));
263 writel(reg | (func << (pin * 4)), pctrl->base + PFC(off));
264
265 /* Set the PWPR register to be write-protected */
266 writel(0x0, pctrl->base + regs->pwpr); /* B0WI=0, PFCWE=0 */
267 writel(PWPR_B0WI, pctrl->base + regs->pwpr); /* B0WI=1, PFCWE=0 */
268
269 /* Switch to Peripheral pin function with PMC register */
270 reg = readb(pctrl->base + PMC(off));
271 writeb(reg | BIT(pin), pctrl->base + PMC(off));
272
273 spin_unlock_irqrestore(&pctrl->lock, flags);
274 };
275
rzg2l_pinctrl_set_mux(struct pinctrl_dev * pctldev,unsigned int func_selector,unsigned int group_selector)276 static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
277 unsigned int func_selector,
278 unsigned int group_selector)
279 {
280 struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
281 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
282 struct function_desc *func;
283 unsigned int i, *psel_val;
284 struct group_desc *group;
285 const unsigned int *pins;
286
287 func = pinmux_generic_get_function(pctldev, func_selector);
288 if (!func)
289 return -EINVAL;
290 group = pinctrl_generic_get_group(pctldev, group_selector);
291 if (!group)
292 return -EINVAL;
293
294 psel_val = func->data;
295 pins = group->grp.pins;
296
297 for (i = 0; i < group->grp.npins; i++) {
298 unsigned int *pin_data = pctrl->desc.pins[pins[i]].drv_data;
299 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
300 u32 pin = RZG2L_PIN_ID_TO_PIN(pins[i]);
301
302 dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
303 RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i] - hwcfg->func_base);
304
305 rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i] - hwcfg->func_base);
306 }
307
308 return 0;
309 };
310
rzg2l_map_add_config(struct pinctrl_map * map,const char * group_or_pin,enum pinctrl_map_type type,unsigned long * configs,unsigned int num_configs)311 static int rzg2l_map_add_config(struct pinctrl_map *map,
312 const char *group_or_pin,
313 enum pinctrl_map_type type,
314 unsigned long *configs,
315 unsigned int num_configs)
316 {
317 unsigned long *cfgs;
318
319 cfgs = kmemdup(configs, num_configs * sizeof(*cfgs),
320 GFP_KERNEL);
321 if (!cfgs)
322 return -ENOMEM;
323
324 map->type = type;
325 map->data.configs.group_or_pin = group_or_pin;
326 map->data.configs.configs = cfgs;
327 map->data.configs.num_configs = num_configs;
328
329 return 0;
330 }
331
rzg2l_dt_subnode_to_map(struct pinctrl_dev * pctldev,struct device_node * np,struct device_node * parent,struct pinctrl_map ** map,unsigned int * num_maps,unsigned int * index)332 static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
333 struct device_node *np,
334 struct device_node *parent,
335 struct pinctrl_map **map,
336 unsigned int *num_maps,
337 unsigned int *index)
338 {
339 struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
340 struct pinctrl_map *maps = *map;
341 unsigned int nmaps = *num_maps;
342 unsigned long *configs = NULL;
343 unsigned int *pins, *psel_val;
344 unsigned int num_pinmux = 0;
345 unsigned int idx = *index;
346 unsigned int num_pins, i;
347 unsigned int num_configs;
348 struct property *pinmux;
349 struct property *prop;
350 int ret, gsel, fsel;
351 const char **pin_fn;
352 const char *name;
353 const char *pin;
354
355 pinmux = of_find_property(np, "pinmux", NULL);
356 if (pinmux)
357 num_pinmux = pinmux->length / sizeof(u32);
358
359 ret = of_property_count_strings(np, "pins");
360 if (ret == -EINVAL) {
361 num_pins = 0;
362 } else if (ret < 0) {
363 dev_err(pctrl->dev, "Invalid pins list in DT\n");
364 return ret;
365 } else {
366 num_pins = ret;
367 }
368
369 if (!num_pinmux && !num_pins)
370 return 0;
371
372 if (num_pinmux && num_pins) {
373 dev_err(pctrl->dev,
374 "DT node must contain either a pinmux or pins and not both\n");
375 return -EINVAL;
376 }
377
378 ret = pinconf_generic_parse_dt_config(np, NULL, &configs, &num_configs);
379 if (ret < 0)
380 return ret;
381
382 if (num_pins && !num_configs) {
383 dev_err(pctrl->dev, "DT node must contain a config\n");
384 ret = -ENODEV;
385 goto done;
386 }
387
388 if (num_pinmux) {
389 nmaps += 1;
390 if (num_configs)
391 nmaps += 1;
392 }
393
394 if (num_pins)
395 nmaps += num_pins;
396
397 maps = krealloc_array(maps, nmaps, sizeof(*maps), GFP_KERNEL);
398 if (!maps) {
399 ret = -ENOMEM;
400 goto done;
401 }
402
403 *map = maps;
404 *num_maps = nmaps;
405 if (num_pins) {
406 of_property_for_each_string(np, "pins", prop, pin) {
407 ret = rzg2l_map_add_config(&maps[idx], pin,
408 PIN_MAP_TYPE_CONFIGS_PIN,
409 configs, num_configs);
410 if (ret < 0)
411 goto done;
412
413 idx++;
414 }
415 ret = 0;
416 goto done;
417 }
418
419 pins = devm_kcalloc(pctrl->dev, num_pinmux, sizeof(*pins), GFP_KERNEL);
420 psel_val = devm_kcalloc(pctrl->dev, num_pinmux, sizeof(*psel_val),
421 GFP_KERNEL);
422 pin_fn = devm_kzalloc(pctrl->dev, sizeof(*pin_fn), GFP_KERNEL);
423 if (!pins || !psel_val || !pin_fn) {
424 ret = -ENOMEM;
425 goto done;
426 }
427
428 /* Collect pin locations and mux settings from DT properties */
429 for (i = 0; i < num_pinmux; ++i) {
430 u32 value;
431
432 ret = of_property_read_u32_index(np, "pinmux", i, &value);
433 if (ret)
434 goto done;
435 pins[i] = value & MUX_PIN_ID_MASK;
436 psel_val[i] = MUX_FUNC(value);
437 }
438
439 if (parent) {
440 name = devm_kasprintf(pctrl->dev, GFP_KERNEL, "%pOFn.%pOFn",
441 parent, np);
442 if (!name) {
443 ret = -ENOMEM;
444 goto done;
445 }
446 } else {
447 name = np->name;
448 }
449
450 mutex_lock(&pctrl->mutex);
451
452 /* Register a single pin group listing all the pins we read from DT */
453 gsel = pinctrl_generic_add_group(pctldev, name, pins, num_pinmux, NULL);
454 if (gsel < 0) {
455 ret = gsel;
456 goto unlock;
457 }
458
459 /*
460 * Register a single group function where the 'data' is an array PSEL
461 * register values read from DT.
462 */
463 pin_fn[0] = name;
464 fsel = pinmux_generic_add_function(pctldev, name, pin_fn, 1, psel_val);
465 if (fsel < 0) {
466 ret = fsel;
467 goto remove_group;
468 }
469
470 mutex_unlock(&pctrl->mutex);
471
472 maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
473 maps[idx].data.mux.group = name;
474 maps[idx].data.mux.function = name;
475 idx++;
476
477 if (num_configs) {
478 ret = rzg2l_map_add_config(&maps[idx], name,
479 PIN_MAP_TYPE_CONFIGS_GROUP,
480 configs, num_configs);
481 if (ret < 0)
482 goto remove_group;
483
484 idx++;
485 }
486
487 dev_dbg(pctrl->dev, "Parsed %pOF with %d pins\n", np, num_pinmux);
488 ret = 0;
489 goto done;
490
491 remove_group:
492 pinctrl_generic_remove_group(pctldev, gsel);
493 unlock:
494 mutex_unlock(&pctrl->mutex);
495 done:
496 *index = idx;
497 kfree(configs);
498 return ret;
499 }
500
rzg2l_dt_free_map(struct pinctrl_dev * pctldev,struct pinctrl_map * map,unsigned int num_maps)501 static void rzg2l_dt_free_map(struct pinctrl_dev *pctldev,
502 struct pinctrl_map *map,
503 unsigned int num_maps)
504 {
505 unsigned int i;
506
507 if (!map)
508 return;
509
510 for (i = 0; i < num_maps; ++i) {
511 if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP ||
512 map[i].type == PIN_MAP_TYPE_CONFIGS_PIN)
513 kfree(map[i].data.configs.configs);
514 }
515 kfree(map);
516 }
517
rzg2l_dt_node_to_map(struct pinctrl_dev * pctldev,struct device_node * np,struct pinctrl_map ** map,unsigned int * num_maps)518 static int rzg2l_dt_node_to_map(struct pinctrl_dev *pctldev,
519 struct device_node *np,
520 struct pinctrl_map **map,
521 unsigned int *num_maps)
522 {
523 struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
524 struct device_node *child;
525 unsigned int index;
526 int ret;
527
528 *map = NULL;
529 *num_maps = 0;
530 index = 0;
531
532 for_each_child_of_node(np, child) {
533 ret = rzg2l_dt_subnode_to_map(pctldev, child, np, map,
534 num_maps, &index);
535 if (ret < 0) {
536 of_node_put(child);
537 goto done;
538 }
539 }
540
541 if (*num_maps == 0) {
542 ret = rzg2l_dt_subnode_to_map(pctldev, np, NULL, map,
543 num_maps, &index);
544 if (ret < 0)
545 goto done;
546 }
547
548 if (*num_maps)
549 return 0;
550
551 dev_err(pctrl->dev, "no mapping found in node %pOF\n", np);
552 ret = -EINVAL;
553
554 done:
555 rzg2l_dt_free_map(pctldev, *map, *num_maps);
556
557 return ret;
558 }
559
rzg2l_validate_gpio_pin(struct rzg2l_pinctrl * pctrl,u32 cfg,u32 port,u8 bit)560 static int rzg2l_validate_gpio_pin(struct rzg2l_pinctrl *pctrl,
561 u32 cfg, u32 port, u8 bit)
562 {
563 u8 pincount = RZG2L_GPIO_PORT_GET_PINCNT(cfg);
564 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg);
565 u32 data;
566
567 if (bit >= pincount || port >= pctrl->data->n_port_pins)
568 return -EINVAL;
569
570 data = pctrl->data->port_pin_configs[port];
571 if (off != RZG2L_PIN_CFG_TO_PORT_OFFSET(data))
572 return -EINVAL;
573
574 return 0;
575 }
576
rzg2l_read_pin_config(struct rzg2l_pinctrl * pctrl,u32 offset,u8 bit,u32 mask)577 static u32 rzg2l_read_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset,
578 u8 bit, u32 mask)
579 {
580 void __iomem *addr = pctrl->base + offset;
581
582 /* handle _L/_H for 32-bit register read/write */
583 if (bit >= 4) {
584 bit -= 4;
585 addr += 4;
586 }
587
588 return (readl(addr) >> (bit * 8)) & mask;
589 }
590
rzg2l_rmw_pin_config(struct rzg2l_pinctrl * pctrl,u32 offset,u8 bit,u32 mask,u32 val)591 static void rzg2l_rmw_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset,
592 u8 bit, u32 mask, u32 val)
593 {
594 void __iomem *addr = pctrl->base + offset;
595 unsigned long flags;
596 u32 reg;
597
598 /* handle _L/_H for 32-bit register read/write */
599 if (bit >= 4) {
600 bit -= 4;
601 addr += 4;
602 }
603
604 spin_lock_irqsave(&pctrl->lock, flags);
605 reg = readl(addr) & ~(mask << (bit * 8));
606 writel(reg | (val << (bit * 8)), addr);
607 spin_unlock_irqrestore(&pctrl->lock, flags);
608 }
609
rzg2l_caps_to_pwr_reg(const struct rzg2l_register_offsets * regs,u32 caps)610 static int rzg2l_caps_to_pwr_reg(const struct rzg2l_register_offsets *regs, u32 caps)
611 {
612 if (caps & PIN_CFG_IO_VMC_SD0)
613 return SD_CH(regs->sd_ch, 0);
614 if (caps & PIN_CFG_IO_VMC_SD1)
615 return SD_CH(regs->sd_ch, 1);
616 if (caps & PIN_CFG_IO_VMC_ETH0)
617 return ETH_POC(regs->eth_poc, 0);
618 if (caps & PIN_CFG_IO_VMC_ETH1)
619 return ETH_POC(regs->eth_poc, 1);
620 if (caps & PIN_CFG_IO_VMC_QSPI)
621 return QSPI;
622
623 return -EINVAL;
624 }
625
rzg2l_get_power_source(struct rzg2l_pinctrl * pctrl,u32 pin,u32 caps)626 static int rzg2l_get_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps)
627 {
628 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
629 const struct rzg2l_register_offsets *regs = &hwcfg->regs;
630 int pwr_reg;
631 u8 val;
632
633 if (caps & PIN_CFG_SOFT_PS)
634 return pctrl->settings[pin].power_source;
635
636 pwr_reg = rzg2l_caps_to_pwr_reg(regs, caps);
637 if (pwr_reg < 0)
638 return pwr_reg;
639
640 val = readb(pctrl->base + pwr_reg);
641 switch (val) {
642 case PVDD_1800:
643 return 1800;
644 case PVDD_2500:
645 return 2500;
646 case PVDD_3300:
647 return 3300;
648 default:
649 /* Should not happen. */
650 return -EINVAL;
651 }
652 }
653
rzg2l_set_power_source(struct rzg2l_pinctrl * pctrl,u32 pin,u32 caps,u32 ps)654 static int rzg2l_set_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps, u32 ps)
655 {
656 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
657 const struct rzg2l_register_offsets *regs = &hwcfg->regs;
658 int pwr_reg;
659 u8 val;
660
661 if (caps & PIN_CFG_SOFT_PS) {
662 pctrl->settings[pin].power_source = ps;
663 return 0;
664 }
665
666 switch (ps) {
667 case 1800:
668 val = PVDD_1800;
669 break;
670 case 2500:
671 val = PVDD_2500;
672 break;
673 case 3300:
674 val = PVDD_3300;
675 break;
676 default:
677 return -EINVAL;
678 }
679
680 pwr_reg = rzg2l_caps_to_pwr_reg(regs, caps);
681 if (pwr_reg < 0)
682 return pwr_reg;
683
684 writeb(val, pctrl->base + pwr_reg);
685 pctrl->settings[pin].power_source = ps;
686
687 return 0;
688 }
689
rzg2l_ps_is_supported(u16 ps)690 static bool rzg2l_ps_is_supported(u16 ps)
691 {
692 unsigned int i;
693
694 for (i = 0; i < ARRAY_SIZE(available_ps); i++) {
695 if (available_ps[i] == ps)
696 return true;
697 }
698
699 return false;
700 }
701
rzg2l_ps_to_iolh_idx(u16 ps)702 static enum rzg2l_iolh_index rzg2l_ps_to_iolh_idx(u16 ps)
703 {
704 unsigned int i;
705
706 for (i = 0; i < ARRAY_SIZE(available_ps); i++) {
707 if (available_ps[i] == ps)
708 break;
709 }
710
711 /*
712 * We multiply with RZG2L_IOLH_MAX_DS_ENTRIES as we have
713 * RZG2L_IOLH_MAX_DS_ENTRIES DS values per power source
714 */
715 return i * RZG2L_IOLH_MAX_DS_ENTRIES;
716 }
717
rzg2l_iolh_val_to_ua(const struct rzg2l_hwcfg * hwcfg,u32 caps,u8 val)718 static u16 rzg2l_iolh_val_to_ua(const struct rzg2l_hwcfg *hwcfg, u32 caps, u8 val)
719 {
720 if (caps & PIN_CFG_IOLH_A)
721 return hwcfg->iolh_groupa_ua[val];
722
723 if (caps & PIN_CFG_IOLH_B)
724 return hwcfg->iolh_groupb_ua[val];
725
726 if (caps & PIN_CFG_IOLH_C)
727 return hwcfg->iolh_groupc_ua[val];
728
729 /* Should not happen. */
730 return 0;
731 }
732
rzg2l_iolh_ua_to_val(const struct rzg2l_hwcfg * hwcfg,u32 caps,enum rzg2l_iolh_index ps_index,u16 ua)733 static int rzg2l_iolh_ua_to_val(const struct rzg2l_hwcfg *hwcfg, u32 caps,
734 enum rzg2l_iolh_index ps_index, u16 ua)
735 {
736 const u16 *array = NULL;
737 unsigned int i;
738
739 if (caps & PIN_CFG_IOLH_A)
740 array = &hwcfg->iolh_groupa_ua[ps_index];
741
742 if (caps & PIN_CFG_IOLH_B)
743 array = &hwcfg->iolh_groupb_ua[ps_index];
744
745 if (caps & PIN_CFG_IOLH_C)
746 array = &hwcfg->iolh_groupc_ua[ps_index];
747
748 if (!array)
749 return -EINVAL;
750
751 for (i = 0; i < RZG2L_IOLH_MAX_DS_ENTRIES; i++) {
752 if (array[i] == ua)
753 return i;
754 }
755
756 return -EINVAL;
757 }
758
rzg2l_ds_is_supported(struct rzg2l_pinctrl * pctrl,u32 caps,enum rzg2l_iolh_index iolh_idx,u16 ds)759 static bool rzg2l_ds_is_supported(struct rzg2l_pinctrl *pctrl, u32 caps,
760 enum rzg2l_iolh_index iolh_idx,
761 u16 ds)
762 {
763 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
764 const u16 *array = NULL;
765 unsigned int i;
766
767 if (caps & PIN_CFG_IOLH_A)
768 array = hwcfg->iolh_groupa_ua;
769
770 if (caps & PIN_CFG_IOLH_B)
771 array = hwcfg->iolh_groupb_ua;
772
773 if (caps & PIN_CFG_IOLH_C)
774 array = hwcfg->iolh_groupc_ua;
775
776 /* Should not happen. */
777 if (!array)
778 return false;
779
780 if (!array[iolh_idx])
781 return false;
782
783 for (i = 0; i < RZG2L_IOLH_MAX_DS_ENTRIES; i++) {
784 if (array[iolh_idx + i] == ds)
785 return true;
786 }
787
788 return false;
789 }
790
rzg2l_oen_is_supported(u32 caps,u8 pin,u8 max_pin)791 static bool rzg2l_oen_is_supported(u32 caps, u8 pin, u8 max_pin)
792 {
793 if (!(caps & PIN_CFG_OEN))
794 return false;
795
796 if (pin > max_pin)
797 return false;
798
799 return true;
800 }
801
rzg2l_pin_to_oen_bit(u32 offset,u8 pin,u8 max_port)802 static u8 rzg2l_pin_to_oen_bit(u32 offset, u8 pin, u8 max_port)
803 {
804 if (pin)
805 pin *= 2;
806
807 if (offset / RZG2L_PINS_PER_PORT == max_port)
808 pin += 1;
809
810 return pin;
811 }
812
rzg2l_read_oen(struct rzg2l_pinctrl * pctrl,u32 caps,u32 offset,u8 pin)813 static u32 rzg2l_read_oen(struct rzg2l_pinctrl *pctrl, u32 caps, u32 offset, u8 pin)
814 {
815 u8 max_port = pctrl->data->hwcfg->oen_max_port;
816 u8 max_pin = pctrl->data->hwcfg->oen_max_pin;
817 u8 bit;
818
819 if (!rzg2l_oen_is_supported(caps, pin, max_pin))
820 return 0;
821
822 bit = rzg2l_pin_to_oen_bit(offset, pin, max_port);
823
824 return !(readb(pctrl->base + ETH_MODE) & BIT(bit));
825 }
826
rzg2l_write_oen(struct rzg2l_pinctrl * pctrl,u32 caps,u32 offset,u8 pin,u8 oen)827 static int rzg2l_write_oen(struct rzg2l_pinctrl *pctrl, u32 caps, u32 offset, u8 pin, u8 oen)
828 {
829 u8 max_port = pctrl->data->hwcfg->oen_max_port;
830 u8 max_pin = pctrl->data->hwcfg->oen_max_pin;
831 unsigned long flags;
832 u8 val, bit;
833
834 if (!rzg2l_oen_is_supported(caps, pin, max_pin))
835 return -EINVAL;
836
837 bit = rzg2l_pin_to_oen_bit(offset, pin, max_port);
838
839 spin_lock_irqsave(&pctrl->lock, flags);
840 val = readb(pctrl->base + ETH_MODE);
841 if (oen)
842 val &= ~BIT(bit);
843 else
844 val |= BIT(bit);
845 writeb(val, pctrl->base + ETH_MODE);
846 spin_unlock_irqrestore(&pctrl->lock, flags);
847
848 return 0;
849 }
850
rzg2l_pinctrl_pinconf_get(struct pinctrl_dev * pctldev,unsigned int _pin,unsigned long * config)851 static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
852 unsigned int _pin,
853 unsigned long *config)
854 {
855 struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
856 enum pin_config_param param = pinconf_to_config_param(*config);
857 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
858 const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
859 unsigned int *pin_data = pin->drv_data;
860 unsigned int arg = 0;
861 u32 off, cfg;
862 int ret;
863 u8 bit;
864
865 if (!pin_data)
866 return -EINVAL;
867
868 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
869 cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data);
870 if (*pin_data & RZG2L_SINGLE_PIN) {
871 bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
872 } else {
873 bit = RZG2L_PIN_ID_TO_PIN(_pin);
874
875 if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
876 return -EINVAL;
877 }
878
879 switch (param) {
880 case PIN_CONFIG_INPUT_ENABLE:
881 if (!(cfg & PIN_CFG_IEN))
882 return -EINVAL;
883 arg = rzg2l_read_pin_config(pctrl, IEN(off), bit, IEN_MASK);
884 if (!arg)
885 return -EINVAL;
886 break;
887
888 case PIN_CONFIG_OUTPUT_ENABLE:
889 arg = rzg2l_read_oen(pctrl, cfg, _pin, bit);
890 if (!arg)
891 return -EINVAL;
892 break;
893
894 case PIN_CONFIG_POWER_SOURCE:
895 ret = rzg2l_get_power_source(pctrl, _pin, cfg);
896 if (ret < 0)
897 return ret;
898 arg = ret;
899 break;
900
901 case PIN_CONFIG_DRIVE_STRENGTH: {
902 unsigned int index;
903
904 if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
905 return -EINVAL;
906
907 index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
908 /*
909 * Drive strenght mA is supported only by group A and only
910 * for 3V3 port source.
911 */
912 arg = hwcfg->iolh_groupa_ua[index + RZG2L_IOLH_IDX_3V3] / 1000;
913 break;
914 }
915
916 case PIN_CONFIG_DRIVE_STRENGTH_UA: {
917 enum rzg2l_iolh_index iolh_idx;
918 u8 val;
919
920 if (!(cfg & (PIN_CFG_IOLH_A | PIN_CFG_IOLH_B | PIN_CFG_IOLH_C)) ||
921 !hwcfg->drive_strength_ua)
922 return -EINVAL;
923
924 ret = rzg2l_get_power_source(pctrl, _pin, cfg);
925 if (ret < 0)
926 return ret;
927 iolh_idx = rzg2l_ps_to_iolh_idx(ret);
928 val = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
929 arg = rzg2l_iolh_val_to_ua(hwcfg, cfg, iolh_idx + val);
930 break;
931 }
932
933 case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
934 unsigned int index;
935
936 if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
937 return -EINVAL;
938
939 index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
940 arg = hwcfg->iolh_groupb_oi[index];
941 break;
942 }
943
944 default:
945 return -ENOTSUPP;
946 }
947
948 *config = pinconf_to_config_packed(param, arg);
949
950 return 0;
951 };
952
rzg2l_pinctrl_pinconf_set(struct pinctrl_dev * pctldev,unsigned int _pin,unsigned long * _configs,unsigned int num_configs)953 static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
954 unsigned int _pin,
955 unsigned long *_configs,
956 unsigned int num_configs)
957 {
958 struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
959 const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
960 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
961 struct rzg2l_pinctrl_pin_settings settings = pctrl->settings[_pin];
962 unsigned int *pin_data = pin->drv_data;
963 enum pin_config_param param;
964 unsigned int i, arg, index;
965 u32 cfg, off;
966 int ret;
967 u8 bit;
968
969 if (!pin_data)
970 return -EINVAL;
971
972 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
973 cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data);
974 if (*pin_data & RZG2L_SINGLE_PIN) {
975 bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
976 } else {
977 bit = RZG2L_PIN_ID_TO_PIN(_pin);
978
979 if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
980 return -EINVAL;
981 }
982
983 for (i = 0; i < num_configs; i++) {
984 param = pinconf_to_config_param(_configs[i]);
985 switch (param) {
986 case PIN_CONFIG_INPUT_ENABLE:
987 arg = pinconf_to_config_argument(_configs[i]);
988
989 if (!(cfg & PIN_CFG_IEN))
990 return -EINVAL;
991
992 rzg2l_rmw_pin_config(pctrl, IEN(off), bit, IEN_MASK, !!arg);
993 break;
994
995 case PIN_CONFIG_OUTPUT_ENABLE:
996 arg = pinconf_to_config_argument(_configs[i]);
997 ret = rzg2l_write_oen(pctrl, cfg, _pin, bit, !!arg);
998 if (ret)
999 return ret;
1000 break;
1001
1002 case PIN_CONFIG_POWER_SOURCE:
1003 settings.power_source = pinconf_to_config_argument(_configs[i]);
1004 break;
1005
1006 case PIN_CONFIG_DRIVE_STRENGTH:
1007 arg = pinconf_to_config_argument(_configs[i]);
1008
1009 if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
1010 return -EINVAL;
1011
1012 for (index = RZG2L_IOLH_IDX_3V3;
1013 index < RZG2L_IOLH_IDX_3V3 + RZG2L_IOLH_MAX_DS_ENTRIES; index++) {
1014 if (arg == (hwcfg->iolh_groupa_ua[index] / 1000))
1015 break;
1016 }
1017 if (index == (RZG2L_IOLH_IDX_3V3 + RZG2L_IOLH_MAX_DS_ENTRIES))
1018 return -EINVAL;
1019
1020 rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
1021 break;
1022
1023 case PIN_CONFIG_DRIVE_STRENGTH_UA:
1024 if (!(cfg & (PIN_CFG_IOLH_A | PIN_CFG_IOLH_B | PIN_CFG_IOLH_C)) ||
1025 !hwcfg->drive_strength_ua)
1026 return -EINVAL;
1027
1028 settings.drive_strength_ua = pinconf_to_config_argument(_configs[i]);
1029 break;
1030
1031 case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS:
1032 arg = pinconf_to_config_argument(_configs[i]);
1033
1034 if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
1035 return -EINVAL;
1036
1037 for (index = 0; index < ARRAY_SIZE(hwcfg->iolh_groupb_oi); index++) {
1038 if (arg == hwcfg->iolh_groupb_oi[index])
1039 break;
1040 }
1041 if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))
1042 return -EINVAL;
1043
1044 rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
1045 break;
1046
1047 default:
1048 return -EOPNOTSUPP;
1049 }
1050 }
1051
1052 /* Apply power source. */
1053 if (settings.power_source != pctrl->settings[_pin].power_source) {
1054 ret = rzg2l_ps_is_supported(settings.power_source);
1055 if (!ret)
1056 return -EINVAL;
1057
1058 /* Apply power source. */
1059 ret = rzg2l_set_power_source(pctrl, _pin, cfg, settings.power_source);
1060 if (ret)
1061 return ret;
1062 }
1063
1064 /* Apply drive strength. */
1065 if (settings.drive_strength_ua != pctrl->settings[_pin].drive_strength_ua) {
1066 enum rzg2l_iolh_index iolh_idx;
1067 int val;
1068
1069 iolh_idx = rzg2l_ps_to_iolh_idx(settings.power_source);
1070 ret = rzg2l_ds_is_supported(pctrl, cfg, iolh_idx,
1071 settings.drive_strength_ua);
1072 if (!ret)
1073 return -EINVAL;
1074
1075 /* Get register value for this PS/DS tuple. */
1076 val = rzg2l_iolh_ua_to_val(hwcfg, cfg, iolh_idx, settings.drive_strength_ua);
1077 if (val < 0)
1078 return val;
1079
1080 /* Apply drive strength. */
1081 rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, val);
1082 pctrl->settings[_pin].drive_strength_ua = settings.drive_strength_ua;
1083 }
1084
1085 return 0;
1086 }
1087
rzg2l_pinctrl_pinconf_group_set(struct pinctrl_dev * pctldev,unsigned int group,unsigned long * configs,unsigned int num_configs)1088 static int rzg2l_pinctrl_pinconf_group_set(struct pinctrl_dev *pctldev,
1089 unsigned int group,
1090 unsigned long *configs,
1091 unsigned int num_configs)
1092 {
1093 const unsigned int *pins;
1094 unsigned int i, npins;
1095 int ret;
1096
1097 ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);
1098 if (ret)
1099 return ret;
1100
1101 for (i = 0; i < npins; i++) {
1102 ret = rzg2l_pinctrl_pinconf_set(pctldev, pins[i], configs,
1103 num_configs);
1104 if (ret)
1105 return ret;
1106 }
1107
1108 return 0;
1109 };
1110
rzg2l_pinctrl_pinconf_group_get(struct pinctrl_dev * pctldev,unsigned int group,unsigned long * config)1111 static int rzg2l_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
1112 unsigned int group,
1113 unsigned long *config)
1114 {
1115 const unsigned int *pins;
1116 unsigned int i, npins, prev_config = 0;
1117 int ret;
1118
1119 ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);
1120 if (ret)
1121 return ret;
1122
1123 for (i = 0; i < npins; i++) {
1124 ret = rzg2l_pinctrl_pinconf_get(pctldev, pins[i], config);
1125 if (ret)
1126 return ret;
1127
1128 /* Check config matching between to pin */
1129 if (i && prev_config != *config)
1130 return -EOPNOTSUPP;
1131
1132 prev_config = *config;
1133 }
1134
1135 return 0;
1136 };
1137
1138 static const struct pinctrl_ops rzg2l_pinctrl_pctlops = {
1139 .get_groups_count = pinctrl_generic_get_group_count,
1140 .get_group_name = pinctrl_generic_get_group_name,
1141 .get_group_pins = pinctrl_generic_get_group_pins,
1142 .dt_node_to_map = rzg2l_dt_node_to_map,
1143 .dt_free_map = rzg2l_dt_free_map,
1144 };
1145
1146 static const struct pinmux_ops rzg2l_pinctrl_pmxops = {
1147 .get_functions_count = pinmux_generic_get_function_count,
1148 .get_function_name = pinmux_generic_get_function_name,
1149 .get_function_groups = pinmux_generic_get_function_groups,
1150 .set_mux = rzg2l_pinctrl_set_mux,
1151 .strict = true,
1152 };
1153
1154 static const struct pinconf_ops rzg2l_pinctrl_confops = {
1155 .is_generic = true,
1156 .pin_config_get = rzg2l_pinctrl_pinconf_get,
1157 .pin_config_set = rzg2l_pinctrl_pinconf_set,
1158 .pin_config_group_set = rzg2l_pinctrl_pinconf_group_set,
1159 .pin_config_group_get = rzg2l_pinctrl_pinconf_group_get,
1160 .pin_config_config_dbg_show = pinconf_generic_dump_config,
1161 };
1162
rzg2l_gpio_request(struct gpio_chip * chip,unsigned int offset)1163 static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
1164 {
1165 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
1166 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
1167 u32 *pin_data = pin_desc->drv_data;
1168 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1169 u32 port = RZG2L_PIN_ID_TO_PORT(offset);
1170 u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
1171 unsigned long flags;
1172 u8 reg8;
1173 int ret;
1174
1175 ret = rzg2l_validate_gpio_pin(pctrl, *pin_data, port, bit);
1176 if (ret)
1177 return ret;
1178
1179 ret = pinctrl_gpio_request(chip, offset);
1180 if (ret)
1181 return ret;
1182
1183 spin_lock_irqsave(&pctrl->lock, flags);
1184
1185 /* Select GPIO mode in PMC Register */
1186 reg8 = readb(pctrl->base + PMC(off));
1187 reg8 &= ~BIT(bit);
1188 writeb(reg8, pctrl->base + PMC(off));
1189
1190 spin_unlock_irqrestore(&pctrl->lock, flags);
1191
1192 return 0;
1193 }
1194
rzg2l_gpio_set_direction(struct rzg2l_pinctrl * pctrl,u32 offset,bool output)1195 static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 offset,
1196 bool output)
1197 {
1198 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
1199 unsigned int *pin_data = pin_desc->drv_data;
1200 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1201 u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
1202 unsigned long flags;
1203 u16 reg16;
1204
1205 spin_lock_irqsave(&pctrl->lock, flags);
1206
1207 reg16 = readw(pctrl->base + PM(off));
1208 reg16 &= ~(PM_MASK << (bit * 2));
1209
1210 reg16 |= (output ? PM_OUTPUT : PM_INPUT) << (bit * 2);
1211 writew(reg16, pctrl->base + PM(off));
1212
1213 spin_unlock_irqrestore(&pctrl->lock, flags);
1214 }
1215
rzg2l_gpio_get_direction(struct gpio_chip * chip,unsigned int offset)1216 static int rzg2l_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
1217 {
1218 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
1219 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
1220 unsigned int *pin_data = pin_desc->drv_data;
1221 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1222 u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
1223
1224 if (!(readb(pctrl->base + PMC(off)) & BIT(bit))) {
1225 u16 reg16;
1226
1227 reg16 = readw(pctrl->base + PM(off));
1228 reg16 = (reg16 >> (bit * 2)) & PM_MASK;
1229 if (reg16 == PM_OUTPUT)
1230 return GPIO_LINE_DIRECTION_OUT;
1231 }
1232
1233 return GPIO_LINE_DIRECTION_IN;
1234 }
1235
rzg2l_gpio_direction_input(struct gpio_chip * chip,unsigned int offset)1236 static int rzg2l_gpio_direction_input(struct gpio_chip *chip,
1237 unsigned int offset)
1238 {
1239 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
1240
1241 rzg2l_gpio_set_direction(pctrl, offset, false);
1242
1243 return 0;
1244 }
1245
rzg2l_gpio_set(struct gpio_chip * chip,unsigned int offset,int value)1246 static void rzg2l_gpio_set(struct gpio_chip *chip, unsigned int offset,
1247 int value)
1248 {
1249 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
1250 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
1251 unsigned int *pin_data = pin_desc->drv_data;
1252 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1253 u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
1254 unsigned long flags;
1255 u8 reg8;
1256
1257 spin_lock_irqsave(&pctrl->lock, flags);
1258
1259 reg8 = readb(pctrl->base + P(off));
1260
1261 if (value)
1262 writeb(reg8 | BIT(bit), pctrl->base + P(off));
1263 else
1264 writeb(reg8 & ~BIT(bit), pctrl->base + P(off));
1265
1266 spin_unlock_irqrestore(&pctrl->lock, flags);
1267 }
1268
rzg2l_gpio_direction_output(struct gpio_chip * chip,unsigned int offset,int value)1269 static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
1270 unsigned int offset, int value)
1271 {
1272 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
1273
1274 rzg2l_gpio_set(chip, offset, value);
1275 rzg2l_gpio_set_direction(pctrl, offset, true);
1276
1277 return 0;
1278 }
1279
rzg2l_gpio_get(struct gpio_chip * chip,unsigned int offset)1280 static int rzg2l_gpio_get(struct gpio_chip *chip, unsigned int offset)
1281 {
1282 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
1283 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
1284 unsigned int *pin_data = pin_desc->drv_data;
1285 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1286 u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
1287 u16 reg16;
1288
1289 reg16 = readw(pctrl->base + PM(off));
1290 reg16 = (reg16 >> (bit * 2)) & PM_MASK;
1291
1292 if (reg16 == PM_INPUT)
1293 return !!(readb(pctrl->base + PIN(off)) & BIT(bit));
1294 else if (reg16 == PM_OUTPUT)
1295 return !!(readb(pctrl->base + P(off)) & BIT(bit));
1296 else
1297 return -EINVAL;
1298 }
1299
rzg2l_gpio_free(struct gpio_chip * chip,unsigned int offset)1300 static void rzg2l_gpio_free(struct gpio_chip *chip, unsigned int offset)
1301 {
1302 unsigned int virq;
1303
1304 pinctrl_gpio_free(chip, offset);
1305
1306 virq = irq_find_mapping(chip->irq.domain, offset);
1307 if (virq)
1308 irq_dispose_mapping(virq);
1309
1310 /*
1311 * Set the GPIO as an input to ensure that the next GPIO request won't
1312 * drive the GPIO pin as an output.
1313 */
1314 rzg2l_gpio_direction_input(chip, offset);
1315 }
1316
1317 static const char * const rzg2l_gpio_names[] = {
1318 "P0_0", "P0_1", "P0_2", "P0_3", "P0_4", "P0_5", "P0_6", "P0_7",
1319 "P1_0", "P1_1", "P1_2", "P1_3", "P1_4", "P1_5", "P1_6", "P1_7",
1320 "P2_0", "P2_1", "P2_2", "P2_3", "P2_4", "P2_5", "P2_6", "P2_7",
1321 "P3_0", "P3_1", "P3_2", "P3_3", "P3_4", "P3_5", "P3_6", "P3_7",
1322 "P4_0", "P4_1", "P4_2", "P4_3", "P4_4", "P4_5", "P4_6", "P4_7",
1323 "P5_0", "P5_1", "P5_2", "P5_3", "P5_4", "P5_5", "P5_6", "P5_7",
1324 "P6_0", "P6_1", "P6_2", "P6_3", "P6_4", "P6_5", "P6_6", "P6_7",
1325 "P7_0", "P7_1", "P7_2", "P7_3", "P7_4", "P7_5", "P7_6", "P7_7",
1326 "P8_0", "P8_1", "P8_2", "P8_3", "P8_4", "P8_5", "P8_6", "P8_7",
1327 "P9_0", "P9_1", "P9_2", "P9_3", "P9_4", "P9_5", "P9_6", "P9_7",
1328 "P10_0", "P10_1", "P10_2", "P10_3", "P10_4", "P10_5", "P10_6", "P10_7",
1329 "P11_0", "P11_1", "P11_2", "P11_3", "P11_4", "P11_5", "P11_6", "P11_7",
1330 "P12_0", "P12_1", "P12_2", "P12_3", "P12_4", "P12_5", "P12_6", "P12_7",
1331 "P13_0", "P13_1", "P13_2", "P13_3", "P13_4", "P13_5", "P13_6", "P13_7",
1332 "P14_0", "P14_1", "P14_2", "P14_3", "P14_4", "P14_5", "P14_6", "P14_7",
1333 "P15_0", "P15_1", "P15_2", "P15_3", "P15_4", "P15_5", "P15_6", "P15_7",
1334 "P16_0", "P16_1", "P16_2", "P16_3", "P16_4", "P16_5", "P16_6", "P16_7",
1335 "P17_0", "P17_1", "P17_2", "P17_3", "P17_4", "P17_5", "P17_6", "P17_7",
1336 "P18_0", "P18_1", "P18_2", "P18_3", "P18_4", "P18_5", "P18_6", "P18_7",
1337 "P19_0", "P19_1", "P19_2", "P19_3", "P19_4", "P19_5", "P19_6", "P19_7",
1338 "P20_0", "P20_1", "P20_2", "P20_3", "P20_4", "P20_5", "P20_6", "P20_7",
1339 "P21_0", "P21_1", "P21_2", "P21_3", "P21_4", "P21_5", "P21_6", "P21_7",
1340 "P22_0", "P22_1", "P22_2", "P22_3", "P22_4", "P22_5", "P22_6", "P22_7",
1341 "P23_0", "P23_1", "P23_2", "P23_3", "P23_4", "P23_5", "P23_6", "P23_7",
1342 "P24_0", "P24_1", "P24_2", "P24_3", "P24_4", "P24_5", "P24_6", "P24_7",
1343 "P25_0", "P25_1", "P25_2", "P25_3", "P25_4", "P25_5", "P25_6", "P25_7",
1344 "P26_0", "P26_1", "P26_2", "P26_3", "P26_4", "P26_5", "P26_6", "P26_7",
1345 "P27_0", "P27_1", "P27_2", "P27_3", "P27_4", "P27_5", "P27_6", "P27_7",
1346 "P28_0", "P28_1", "P28_2", "P28_3", "P28_4", "P28_5", "P28_6", "P28_7",
1347 "P29_0", "P29_1", "P29_2", "P29_3", "P29_4", "P29_5", "P29_6", "P29_7",
1348 "P30_0", "P30_1", "P30_2", "P30_3", "P30_4", "P30_5", "P30_6", "P30_7",
1349 "P31_0", "P31_1", "P31_2", "P31_3", "P31_4", "P31_5", "P31_6", "P31_7",
1350 "P32_0", "P32_1", "P32_2", "P32_3", "P32_4", "P32_5", "P32_6", "P32_7",
1351 "P33_0", "P33_1", "P33_2", "P33_3", "P33_4", "P33_5", "P33_6", "P33_7",
1352 "P34_0", "P34_1", "P34_2", "P34_3", "P34_4", "P34_5", "P34_6", "P34_7",
1353 "P35_0", "P35_1", "P35_2", "P35_3", "P35_4", "P35_5", "P35_6", "P35_7",
1354 "P36_0", "P36_1", "P36_2", "P36_3", "P36_4", "P36_5", "P36_6", "P36_7",
1355 "P37_0", "P37_1", "P37_2", "P37_3", "P37_4", "P37_5", "P37_6", "P37_7",
1356 "P38_0", "P38_1", "P38_2", "P38_3", "P38_4", "P38_5", "P38_6", "P38_7",
1357 "P39_0", "P39_1", "P39_2", "P39_3", "P39_4", "P39_5", "P39_6", "P39_7",
1358 "P40_0", "P40_1", "P40_2", "P40_3", "P40_4", "P40_5", "P40_6", "P40_7",
1359 "P41_0", "P41_1", "P41_2", "P41_3", "P41_4", "P41_5", "P41_6", "P41_7",
1360 "P42_0", "P42_1", "P42_2", "P42_3", "P42_4", "P42_5", "P42_6", "P42_7",
1361 "P43_0", "P43_1", "P43_2", "P43_3", "P43_4", "P43_5", "P43_6", "P43_7",
1362 "P44_0", "P44_1", "P44_2", "P44_3", "P44_4", "P44_5", "P44_6", "P44_7",
1363 "P45_0", "P45_1", "P45_2", "P45_3", "P45_4", "P45_5", "P45_6", "P45_7",
1364 "P46_0", "P46_1", "P46_2", "P46_3", "P46_4", "P46_5", "P46_6", "P46_7",
1365 "P47_0", "P47_1", "P47_2", "P47_3", "P47_4", "P47_5", "P47_6", "P47_7",
1366 "P48_0", "P48_1", "P48_2", "P48_3", "P48_4", "P48_5", "P48_6", "P48_7",
1367 };
1368
1369 static const u32 r9a07g044_gpio_configs[] = {
1370 RZG2L_GPIO_PORT_PACK(2, 0x10, RZG2L_MPXED_PIN_FUNCS),
1371 RZG2L_GPIO_PORT_PACK(2, 0x11, RZG2L_MPXED_PIN_FUNCS),
1372 RZG2L_GPIO_PORT_PACK(2, 0x12, RZG2L_MPXED_PIN_FUNCS),
1373 RZG2L_GPIO_PORT_PACK(2, 0x13, RZG2L_MPXED_PIN_FUNCS),
1374 RZG2L_GPIO_PORT_PACK(2, 0x14, RZG2L_MPXED_PIN_FUNCS),
1375 RZG2L_GPIO_PORT_PACK(3, 0x15, RZG2L_MPXED_PIN_FUNCS),
1376 RZG2L_GPIO_PORT_PACK(2, 0x16, RZG2L_MPXED_PIN_FUNCS),
1377 RZG2L_GPIO_PORT_PACK(3, 0x17, RZG2L_MPXED_PIN_FUNCS),
1378 RZG2L_GPIO_PORT_PACK(3, 0x18, RZG2L_MPXED_PIN_FUNCS),
1379 RZG2L_GPIO_PORT_PACK(2, 0x19, RZG2L_MPXED_PIN_FUNCS),
1380 RZG2L_GPIO_PORT_PACK(2, 0x1a, RZG2L_MPXED_PIN_FUNCS),
1381 RZG2L_GPIO_PORT_PACK(2, 0x1b, RZG2L_MPXED_PIN_FUNCS),
1382 RZG2L_GPIO_PORT_PACK(2, 0x1c, RZG2L_MPXED_PIN_FUNCS),
1383 RZG2L_GPIO_PORT_PACK(3, 0x1d, RZG2L_MPXED_PIN_FUNCS),
1384 RZG2L_GPIO_PORT_PACK(2, 0x1e, RZG2L_MPXED_PIN_FUNCS),
1385 RZG2L_GPIO_PORT_PACK(2, 0x1f, RZG2L_MPXED_PIN_FUNCS),
1386 RZG2L_GPIO_PORT_PACK(2, 0x20, RZG2L_MPXED_PIN_FUNCS),
1387 RZG2L_GPIO_PORT_PACK(3, 0x21, RZG2L_MPXED_PIN_FUNCS),
1388 RZG2L_GPIO_PORT_PACK(2, 0x22, RZG2L_MPXED_PIN_FUNCS),
1389 RZG2L_GPIO_PORT_PACK(2, 0x23, RZG2L_MPXED_PIN_FUNCS),
1390 RZG2L_GPIO_PORT_PACK(3, 0x24, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1391 RZG2L_GPIO_PORT_PACK(2, 0x25, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1392 RZG2L_GPIO_PORT_PACK(2, 0x26, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1393 RZG2L_GPIO_PORT_PACK(2, 0x27, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1394 RZG2L_GPIO_PORT_PACK(2, 0x28, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1395 RZG2L_GPIO_PORT_PACK(2, 0x29, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1396 RZG2L_GPIO_PORT_PACK(2, 0x2a, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1397 RZG2L_GPIO_PORT_PACK(2, 0x2b, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1398 RZG2L_GPIO_PORT_PACK(2, 0x2c, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1399 RZG2L_GPIO_PORT_PACK(2, 0x2d, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1400 RZG2L_GPIO_PORT_PACK(2, 0x2e, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1401 RZG2L_GPIO_PORT_PACK(2, 0x2f, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1402 RZG2L_GPIO_PORT_PACK(2, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1403 RZG2L_GPIO_PORT_PACK(2, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1404 RZG2L_GPIO_PORT_PACK(2, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1405 RZG2L_GPIO_PORT_PACK(2, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1406 RZG2L_GPIO_PORT_PACK(2, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1407 RZG2L_GPIO_PORT_PACK(3, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1408 RZG2L_GPIO_PORT_PACK(2, 0x36, RZG2L_MPXED_PIN_FUNCS),
1409 RZG2L_GPIO_PORT_PACK(3, 0x37, RZG2L_MPXED_PIN_FUNCS),
1410 RZG2L_GPIO_PORT_PACK(3, 0x38, RZG2L_MPXED_PIN_FUNCS),
1411 RZG2L_GPIO_PORT_PACK(2, 0x39, RZG2L_MPXED_PIN_FUNCS),
1412 RZG2L_GPIO_PORT_PACK(5, 0x3a, RZG2L_MPXED_PIN_FUNCS),
1413 RZG2L_GPIO_PORT_PACK(4, 0x3b, RZG2L_MPXED_PIN_FUNCS),
1414 RZG2L_GPIO_PORT_PACK(4, 0x3c, RZG2L_MPXED_PIN_FUNCS),
1415 RZG2L_GPIO_PORT_PACK(4, 0x3d, RZG2L_MPXED_PIN_FUNCS),
1416 RZG2L_GPIO_PORT_PACK(4, 0x3e, RZG2L_MPXED_PIN_FUNCS),
1417 RZG2L_GPIO_PORT_PACK(4, 0x3f, RZG2L_MPXED_PIN_FUNCS),
1418 RZG2L_GPIO_PORT_PACK(5, 0x40, RZG2L_MPXED_PIN_FUNCS),
1419 };
1420
1421 static const u32 r9a07g043_gpio_configs[] = {
1422 RZG2L_GPIO_PORT_PACK(4, 0x10, RZG2L_MPXED_PIN_FUNCS),
1423 RZG2L_GPIO_PORT_PACK(5, 0x11, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1424 RZG2L_GPIO_PORT_PACK(4, 0x12, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1425 RZG2L_GPIO_PORT_PACK(4, 0x13, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1426 RZG2L_GPIO_PORT_PACK(6, 0x14, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
1427 RZG2L_GPIO_PORT_PACK(5, 0x15, RZG2L_MPXED_PIN_FUNCS),
1428 RZG2L_GPIO_PORT_PACK(5, 0x16, RZG2L_MPXED_PIN_FUNCS),
1429 RZG2L_GPIO_PORT_PACK(5, 0x17, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1430 RZG2L_GPIO_PORT_PACK(5, 0x18, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1431 RZG2L_GPIO_PORT_PACK(4, 0x19, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1432 RZG2L_GPIO_PORT_PACK(5, 0x1a, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
1433 RZG2L_GPIO_PORT_PACK(4, 0x1b, RZG2L_MPXED_PIN_FUNCS),
1434 RZG2L_GPIO_PORT_PACK(2, 0x1c, RZG2L_MPXED_PIN_FUNCS),
1435 RZG2L_GPIO_PORT_PACK(5, 0x1d, RZG2L_MPXED_PIN_FUNCS),
1436 RZG2L_GPIO_PORT_PACK(3, 0x1e, RZG2L_MPXED_PIN_FUNCS),
1437 RZG2L_GPIO_PORT_PACK(4, 0x1f, RZG2L_MPXED_PIN_FUNCS),
1438 RZG2L_GPIO_PORT_PACK(2, 0x20, RZG2L_MPXED_PIN_FUNCS),
1439 RZG2L_GPIO_PORT_PACK(4, 0x21, RZG2L_MPXED_PIN_FUNCS),
1440 RZG2L_GPIO_PORT_PACK(6, 0x22, RZG2L_MPXED_PIN_FUNCS),
1441 };
1442
1443 static const u32 r9a08g045_gpio_configs[] = {
1444 RZG2L_GPIO_PORT_PACK(4, 0x20, RZG3S_MPXED_PIN_FUNCS(A)), /* P0 */
1445 RZG2L_GPIO_PORT_PACK(5, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1446 PIN_CFG_IO_VMC_ETH0)) |
1447 PIN_CFG_OEN | PIN_CFG_IEN, /* P1 */
1448 RZG2L_GPIO_PORT_PACK(4, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1449 PIN_CFG_IO_VMC_ETH0)), /* P2 */
1450 RZG2L_GPIO_PORT_PACK(4, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1451 PIN_CFG_IO_VMC_ETH0)), /* P3 */
1452 RZG2L_GPIO_PORT_PACK(6, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1453 PIN_CFG_IO_VMC_ETH0)), /* P4 */
1454 RZG2L_GPIO_PORT_PACK(5, 0x21, RZG3S_MPXED_PIN_FUNCS(A)), /* P5 */
1455 RZG2L_GPIO_PORT_PACK(5, 0x22, RZG3S_MPXED_PIN_FUNCS(A)), /* P6 */
1456 RZG2L_GPIO_PORT_PACK(5, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1457 PIN_CFG_IO_VMC_ETH1)) |
1458 PIN_CFG_OEN | PIN_CFG_IEN, /* P7 */
1459 RZG2L_GPIO_PORT_PACK(5, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1460 PIN_CFG_IO_VMC_ETH1)), /* P8 */
1461 RZG2L_GPIO_PORT_PACK(4, 0x36, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1462 PIN_CFG_IO_VMC_ETH1)), /* P9 */
1463 RZG2L_GPIO_PORT_PACK(5, 0x37, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
1464 PIN_CFG_IO_VMC_ETH1)), /* P10 */
1465 RZG2L_GPIO_PORT_PACK(4, 0x23, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN), /* P11 */
1466 RZG2L_GPIO_PORT_PACK(2, 0x24, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN), /* P12 */
1467 RZG2L_GPIO_PORT_PACK(5, 0x25, RZG3S_MPXED_PIN_FUNCS(A)), /* P13 */
1468 RZG2L_GPIO_PORT_PACK(3, 0x26, RZG3S_MPXED_PIN_FUNCS(A)), /* P14 */
1469 RZG2L_GPIO_PORT_PACK(4, 0x27, RZG3S_MPXED_PIN_FUNCS(A)), /* P15 */
1470 RZG2L_GPIO_PORT_PACK(2, 0x28, RZG3S_MPXED_PIN_FUNCS(A)), /* P16 */
1471 RZG2L_GPIO_PORT_PACK(4, 0x29, RZG3S_MPXED_PIN_FUNCS(A)), /* P17 */
1472 RZG2L_GPIO_PORT_PACK(6, 0x2a, RZG3S_MPXED_PIN_FUNCS(A)), /* P18 */
1473 };
1474
1475 static const struct {
1476 struct rzg2l_dedicated_configs common[35];
1477 struct rzg2l_dedicated_configs rzg2l_pins[7];
1478 } rzg2l_dedicated_pins = {
1479 .common = {
1480 { "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0,
1481 (PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL)) },
1482 { "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x2, 0,
1483 (PIN_CFG_IOLH_A | PIN_CFG_SR | PIN_CFG_IEN)) },
1484 { "TDO", RZG2L_SINGLE_PIN_PACK(0x3, 0,
1485 (PIN_CFG_IOLH_A | PIN_CFG_SR | PIN_CFG_IEN)) },
1486 { "AUDIO_CLK1", RZG2L_SINGLE_PIN_PACK(0x4, 0, PIN_CFG_IEN) },
1487 { "AUDIO_CLK2", RZG2L_SINGLE_PIN_PACK(0x4, 1, PIN_CFG_IEN) },
1488 { "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x6, 0,
1489 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD0)) },
1490 { "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x6, 1,
1491 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1492 { "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x6, 2,
1493 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD0)) },
1494 { "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x7, 0,
1495 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1496 { "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x7, 1,
1497 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1498 { "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x7, 2,
1499 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1500 { "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x7, 3,
1501 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1502 { "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x7, 4,
1503 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1504 { "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x7, 5,
1505 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1506 { "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x7, 6,
1507 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1508 { "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x7, 7,
1509 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
1510 { "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x8, 0,
1511 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD1)) },
1512 { "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x8, 1,
1513 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
1514 { "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x9, 0,
1515 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
1516 { "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x9, 1,
1517 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
1518 { "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x9, 2,
1519 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
1520 { "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x9, 3,
1521 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
1522 { "QSPI0_SPCLK", RZG2L_SINGLE_PIN_PACK(0xa, 0,
1523 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1524 { "QSPI0_IO0", RZG2L_SINGLE_PIN_PACK(0xa, 1,
1525 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1526 { "QSPI0_IO1", RZG2L_SINGLE_PIN_PACK(0xa, 2,
1527 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1528 { "QSPI0_IO2", RZG2L_SINGLE_PIN_PACK(0xa, 3,
1529 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1530 { "QSPI0_IO3", RZG2L_SINGLE_PIN_PACK(0xa, 4,
1531 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1532 { "QSPI0_SSL", RZG2L_SINGLE_PIN_PACK(0xa, 5,
1533 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1534 { "QSPI_RESET#", RZG2L_SINGLE_PIN_PACK(0xc, 0,
1535 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1536 { "QSPI_WP#", RZG2L_SINGLE_PIN_PACK(0xc, 1,
1537 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1538 { "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0xd, 0, (PIN_CFG_IOLH_A | PIN_CFG_SR)) },
1539 { "RIIC0_SDA", RZG2L_SINGLE_PIN_PACK(0xe, 0, PIN_CFG_IEN) },
1540 { "RIIC0_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 1, PIN_CFG_IEN) },
1541 { "RIIC1_SDA", RZG2L_SINGLE_PIN_PACK(0xe, 2, PIN_CFG_IEN) },
1542 { "RIIC1_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 3, PIN_CFG_IEN) },
1543 },
1544 .rzg2l_pins = {
1545 { "QSPI_INT#", RZG2L_SINGLE_PIN_PACK(0xc, 2, (PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1546 { "QSPI1_SPCLK", RZG2L_SINGLE_PIN_PACK(0xb, 0,
1547 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1548 { "QSPI1_IO0", RZG2L_SINGLE_PIN_PACK(0xb, 1,
1549 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1550 { "QSPI1_IO1", RZG2L_SINGLE_PIN_PACK(0xb, 2,
1551 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1552 { "QSPI1_IO2", RZG2L_SINGLE_PIN_PACK(0xb, 3,
1553 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1554 { "QSPI1_IO3", RZG2L_SINGLE_PIN_PACK(0xb, 4,
1555 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1556 { "QSPI1_SSL", RZG2L_SINGLE_PIN_PACK(0xb, 5,
1557 (PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
1558 }
1559 };
1560
1561 static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
1562 { "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
1563 PIN_CFG_FILCLKSEL)) },
1564 { "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_IOLH_A | PIN_CFG_IEN |
1565 PIN_CFG_SOFT_PS)) },
1566 { "TDO", RZG2L_SINGLE_PIN_PACK(0x1, 1, (PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS)) },
1567 { "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0x6, 0, PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS) },
1568 { "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x10, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
1569 { "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x10, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1570 PIN_CFG_IO_VMC_SD0)) },
1571 { "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x10, 2, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
1572 { "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x11, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1573 PIN_CFG_IO_VMC_SD0)) },
1574 { "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x11, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1575 PIN_CFG_IO_VMC_SD0)) },
1576 { "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x11, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1577 PIN_CFG_IO_VMC_SD0)) },
1578 { "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x11, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1579 PIN_CFG_IO_VMC_SD0)) },
1580 { "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x11, 4, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1581 PIN_CFG_IO_VMC_SD0)) },
1582 { "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x11, 5, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1583 PIN_CFG_IO_VMC_SD0)) },
1584 { "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x11, 6, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1585 PIN_CFG_IO_VMC_SD0)) },
1586 { "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x11, 7, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1587 PIN_CFG_IO_VMC_SD0)) },
1588 { "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x12, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD1)) },
1589 { "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x12, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1590 PIN_CFG_IO_VMC_SD1)) },
1591 { "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x13, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1592 PIN_CFG_IO_VMC_SD1)) },
1593 { "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x13, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1594 PIN_CFG_IO_VMC_SD1)) },
1595 { "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x13, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1596 PIN_CFG_IO_VMC_SD1)) },
1597 { "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x13, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
1598 PIN_CFG_IO_VMC_SD1)) },
1599 };
1600
rzg2l_gpio_get_gpioint(unsigned int virq,const struct rzg2l_pinctrl_data * data)1601 static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_data *data)
1602 {
1603 unsigned int gpioint;
1604 unsigned int i;
1605 u32 port, bit;
1606
1607 port = virq / 8;
1608 bit = virq % 8;
1609
1610 if (port >= data->n_ports ||
1611 bit >= RZG2L_GPIO_PORT_GET_PINCNT(data->port_pin_configs[port]))
1612 return -EINVAL;
1613
1614 gpioint = bit;
1615 for (i = 0; i < port; i++)
1616 gpioint += RZG2L_GPIO_PORT_GET_PINCNT(data->port_pin_configs[i]);
1617
1618 return gpioint;
1619 }
1620
rzg2l_gpio_irq_disable(struct irq_data * d)1621 static void rzg2l_gpio_irq_disable(struct irq_data *d)
1622 {
1623 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1624 struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
1625 unsigned int hwirq = irqd_to_hwirq(d);
1626 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[hwirq];
1627 unsigned int *pin_data = pin_desc->drv_data;
1628 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1629 u8 bit = RZG2L_PIN_ID_TO_PIN(hwirq);
1630 unsigned long flags;
1631 void __iomem *addr;
1632
1633 irq_chip_disable_parent(d);
1634
1635 addr = pctrl->base + ISEL(off);
1636 if (bit >= 4) {
1637 bit -= 4;
1638 addr += 4;
1639 }
1640
1641 spin_lock_irqsave(&pctrl->lock, flags);
1642 writel(readl(addr) & ~BIT(bit * 8), addr);
1643 spin_unlock_irqrestore(&pctrl->lock, flags);
1644
1645 gpiochip_disable_irq(gc, hwirq);
1646 }
1647
rzg2l_gpio_irq_enable(struct irq_data * d)1648 static void rzg2l_gpio_irq_enable(struct irq_data *d)
1649 {
1650 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1651 struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
1652 unsigned int hwirq = irqd_to_hwirq(d);
1653 const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[hwirq];
1654 unsigned int *pin_data = pin_desc->drv_data;
1655 u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
1656 u8 bit = RZG2L_PIN_ID_TO_PIN(hwirq);
1657 unsigned long flags;
1658 void __iomem *addr;
1659
1660 gpiochip_enable_irq(gc, hwirq);
1661
1662 addr = pctrl->base + ISEL(off);
1663 if (bit >= 4) {
1664 bit -= 4;
1665 addr += 4;
1666 }
1667
1668 spin_lock_irqsave(&pctrl->lock, flags);
1669 writel(readl(addr) | BIT(bit * 8), addr);
1670 spin_unlock_irqrestore(&pctrl->lock, flags);
1671
1672 irq_chip_enable_parent(d);
1673 }
1674
rzg2l_gpio_irq_set_type(struct irq_data * d,unsigned int type)1675 static int rzg2l_gpio_irq_set_type(struct irq_data *d, unsigned int type)
1676 {
1677 return irq_chip_set_type_parent(d, type);
1678 }
1679
rzg2l_gpio_irqc_eoi(struct irq_data * d)1680 static void rzg2l_gpio_irqc_eoi(struct irq_data *d)
1681 {
1682 irq_chip_eoi_parent(d);
1683 }
1684
rzg2l_gpio_irq_print_chip(struct irq_data * data,struct seq_file * p)1685 static void rzg2l_gpio_irq_print_chip(struct irq_data *data, struct seq_file *p)
1686 {
1687 struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
1688
1689 seq_printf(p, dev_name(gc->parent));
1690 }
1691
1692 static const struct irq_chip rzg2l_gpio_irqchip = {
1693 .name = "rzg2l-gpio",
1694 .irq_disable = rzg2l_gpio_irq_disable,
1695 .irq_enable = rzg2l_gpio_irq_enable,
1696 .irq_mask = irq_chip_mask_parent,
1697 .irq_unmask = irq_chip_unmask_parent,
1698 .irq_set_type = rzg2l_gpio_irq_set_type,
1699 .irq_eoi = rzg2l_gpio_irqc_eoi,
1700 .irq_print_chip = rzg2l_gpio_irq_print_chip,
1701 .irq_set_affinity = irq_chip_set_affinity_parent,
1702 .flags = IRQCHIP_IMMUTABLE,
1703 GPIOCHIP_IRQ_RESOURCE_HELPERS,
1704 };
1705
rzg2l_gpio_child_to_parent_hwirq(struct gpio_chip * gc,unsigned int child,unsigned int child_type,unsigned int * parent,unsigned int * parent_type)1706 static int rzg2l_gpio_child_to_parent_hwirq(struct gpio_chip *gc,
1707 unsigned int child,
1708 unsigned int child_type,
1709 unsigned int *parent,
1710 unsigned int *parent_type)
1711 {
1712 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(gc);
1713 unsigned long flags;
1714 int gpioint, irq;
1715
1716 gpioint = rzg2l_gpio_get_gpioint(child, pctrl->data);
1717 if (gpioint < 0)
1718 return gpioint;
1719
1720 spin_lock_irqsave(&pctrl->bitmap_lock, flags);
1721 irq = bitmap_find_free_region(pctrl->tint_slot, RZG2L_TINT_MAX_INTERRUPT, get_order(1));
1722 spin_unlock_irqrestore(&pctrl->bitmap_lock, flags);
1723 if (irq < 0)
1724 return -ENOSPC;
1725 pctrl->hwirq[irq] = child;
1726 irq += RZG2L_TINT_IRQ_START_INDEX;
1727
1728 /* All these interrupts are level high in the CPU */
1729 *parent_type = IRQ_TYPE_LEVEL_HIGH;
1730 *parent = RZG2L_PACK_HWIRQ(gpioint, irq);
1731 return 0;
1732 }
1733
rzg2l_gpio_populate_parent_fwspec(struct gpio_chip * chip,union gpio_irq_fwspec * gfwspec,unsigned int parent_hwirq,unsigned int parent_type)1734 static int rzg2l_gpio_populate_parent_fwspec(struct gpio_chip *chip,
1735 union gpio_irq_fwspec *gfwspec,
1736 unsigned int parent_hwirq,
1737 unsigned int parent_type)
1738 {
1739 struct irq_fwspec *fwspec = &gfwspec->fwspec;
1740
1741 fwspec->fwnode = chip->irq.parent_domain->fwnode;
1742 fwspec->param_count = 2;
1743 fwspec->param[0] = parent_hwirq;
1744 fwspec->param[1] = parent_type;
1745
1746 return 0;
1747 }
1748
rzg2l_gpio_irq_domain_free(struct irq_domain * domain,unsigned int virq,unsigned int nr_irqs)1749 static void rzg2l_gpio_irq_domain_free(struct irq_domain *domain, unsigned int virq,
1750 unsigned int nr_irqs)
1751 {
1752 struct irq_data *d;
1753
1754 d = irq_domain_get_irq_data(domain, virq);
1755 if (d) {
1756 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1757 struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
1758 irq_hw_number_t hwirq = irqd_to_hwirq(d);
1759 unsigned long flags;
1760 unsigned int i;
1761
1762 for (i = 0; i < RZG2L_TINT_MAX_INTERRUPT; i++) {
1763 if (pctrl->hwirq[i] == hwirq) {
1764 spin_lock_irqsave(&pctrl->bitmap_lock, flags);
1765 bitmap_release_region(pctrl->tint_slot, i, get_order(1));
1766 spin_unlock_irqrestore(&pctrl->bitmap_lock, flags);
1767 pctrl->hwirq[i] = 0;
1768 break;
1769 }
1770 }
1771 }
1772 irq_domain_free_irqs_common(domain, virq, nr_irqs);
1773 }
1774
rzg2l_init_irq_valid_mask(struct gpio_chip * gc,unsigned long * valid_mask,unsigned int ngpios)1775 static void rzg2l_init_irq_valid_mask(struct gpio_chip *gc,
1776 unsigned long *valid_mask,
1777 unsigned int ngpios)
1778 {
1779 struct rzg2l_pinctrl *pctrl = gpiochip_get_data(gc);
1780 struct gpio_chip *chip = &pctrl->gpio_chip;
1781 unsigned int offset;
1782
1783 /* Forbid unused lines to be mapped as IRQs */
1784 for (offset = 0; offset < chip->ngpio; offset++) {
1785 u32 port, bit;
1786
1787 port = offset / 8;
1788 bit = offset % 8;
1789
1790 if (port >= pctrl->data->n_ports ||
1791 bit >= RZG2L_GPIO_PORT_GET_PINCNT(pctrl->data->port_pin_configs[port]))
1792 clear_bit(offset, valid_mask);
1793 }
1794 }
1795
rzg2l_gpio_register(struct rzg2l_pinctrl * pctrl)1796 static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
1797 {
1798 struct device_node *np = pctrl->dev->of_node;
1799 struct gpio_chip *chip = &pctrl->gpio_chip;
1800 const char *name = dev_name(pctrl->dev);
1801 struct irq_domain *parent_domain;
1802 struct of_phandle_args of_args;
1803 struct device_node *parent_np;
1804 struct gpio_irq_chip *girq;
1805 int ret;
1806
1807 parent_np = of_irq_find_parent(np);
1808 if (!parent_np)
1809 return -ENXIO;
1810
1811 parent_domain = irq_find_host(parent_np);
1812 of_node_put(parent_np);
1813 if (!parent_domain)
1814 return -EPROBE_DEFER;
1815
1816 ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &of_args);
1817 if (ret) {
1818 dev_err(pctrl->dev, "Unable to parse gpio-ranges\n");
1819 return ret;
1820 }
1821
1822 if (of_args.args[0] != 0 || of_args.args[1] != 0 ||
1823 of_args.args[2] != pctrl->data->n_port_pins) {
1824 dev_err(pctrl->dev, "gpio-ranges does not match selected SOC\n");
1825 return -EINVAL;
1826 }
1827
1828 chip->names = pctrl->data->port_pins;
1829 chip->request = rzg2l_gpio_request;
1830 chip->free = rzg2l_gpio_free;
1831 chip->get_direction = rzg2l_gpio_get_direction;
1832 chip->direction_input = rzg2l_gpio_direction_input;
1833 chip->direction_output = rzg2l_gpio_direction_output;
1834 chip->get = rzg2l_gpio_get;
1835 chip->set = rzg2l_gpio_set;
1836 chip->label = name;
1837 chip->parent = pctrl->dev;
1838 chip->owner = THIS_MODULE;
1839 chip->base = -1;
1840 chip->ngpio = of_args.args[2];
1841
1842 girq = &chip->irq;
1843 gpio_irq_chip_set_chip(girq, &rzg2l_gpio_irqchip);
1844 girq->fwnode = of_node_to_fwnode(np);
1845 girq->parent_domain = parent_domain;
1846 girq->child_to_parent_hwirq = rzg2l_gpio_child_to_parent_hwirq;
1847 girq->populate_parent_alloc_arg = rzg2l_gpio_populate_parent_fwspec;
1848 girq->child_irq_domain_ops.free = rzg2l_gpio_irq_domain_free;
1849 girq->init_valid_mask = rzg2l_init_irq_valid_mask;
1850
1851 pctrl->gpio_range.id = 0;
1852 pctrl->gpio_range.pin_base = 0;
1853 pctrl->gpio_range.base = 0;
1854 pctrl->gpio_range.npins = chip->ngpio;
1855 pctrl->gpio_range.name = chip->label;
1856 pctrl->gpio_range.gc = chip;
1857 ret = devm_gpiochip_add_data(pctrl->dev, chip, pctrl);
1858 if (ret) {
1859 dev_err(pctrl->dev, "failed to add GPIO controller\n");
1860 return ret;
1861 }
1862
1863 dev_dbg(pctrl->dev, "Registered gpio controller\n");
1864
1865 return 0;
1866 }
1867
rzg2l_pinctrl_register(struct rzg2l_pinctrl * pctrl)1868 static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
1869 {
1870 const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
1871 struct pinctrl_pin_desc *pins;
1872 unsigned int i, j;
1873 u32 *pin_data;
1874 int ret;
1875
1876 pctrl->desc.name = DRV_NAME;
1877 pctrl->desc.npins = pctrl->data->n_port_pins + pctrl->data->n_dedicated_pins;
1878 pctrl->desc.pctlops = &rzg2l_pinctrl_pctlops;
1879 pctrl->desc.pmxops = &rzg2l_pinctrl_pmxops;
1880 pctrl->desc.confops = &rzg2l_pinctrl_confops;
1881 pctrl->desc.owner = THIS_MODULE;
1882
1883 pins = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pins), GFP_KERNEL);
1884 if (!pins)
1885 return -ENOMEM;
1886
1887 pin_data = devm_kcalloc(pctrl->dev, pctrl->desc.npins,
1888 sizeof(*pin_data), GFP_KERNEL);
1889 if (!pin_data)
1890 return -ENOMEM;
1891
1892 pctrl->pins = pins;
1893 pctrl->desc.pins = pins;
1894
1895 for (i = 0, j = 0; i < pctrl->data->n_port_pins; i++) {
1896 pins[i].number = i;
1897 pins[i].name = pctrl->data->port_pins[i];
1898 if (i && !(i % RZG2L_PINS_PER_PORT))
1899 j++;
1900 pin_data[i] = pctrl->data->port_pin_configs[j];
1901 pins[i].drv_data = &pin_data[i];
1902 }
1903
1904 for (i = 0; i < pctrl->data->n_dedicated_pins; i++) {
1905 unsigned int index = pctrl->data->n_port_pins + i;
1906
1907 pins[index].number = index;
1908 pins[index].name = pctrl->data->dedicated_pins[i].name;
1909 pin_data[index] = pctrl->data->dedicated_pins[i].config;
1910 pins[index].drv_data = &pin_data[index];
1911 }
1912
1913 pctrl->settings = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pctrl->settings),
1914 GFP_KERNEL);
1915 if (!pctrl->settings)
1916 return -ENOMEM;
1917
1918 for (i = 0; hwcfg->drive_strength_ua && i < pctrl->desc.npins; i++) {
1919 if (pin_data[i] & PIN_CFG_SOFT_PS) {
1920 pctrl->settings[i].power_source = 3300;
1921 } else {
1922 ret = rzg2l_get_power_source(pctrl, i, pin_data[i]);
1923 if (ret < 0)
1924 continue;
1925 pctrl->settings[i].power_source = ret;
1926 }
1927 }
1928
1929 ret = devm_pinctrl_register_and_init(pctrl->dev, &pctrl->desc, pctrl,
1930 &pctrl->pctl);
1931 if (ret) {
1932 dev_err(pctrl->dev, "pinctrl registration failed\n");
1933 return ret;
1934 }
1935
1936 ret = pinctrl_enable(pctrl->pctl);
1937 if (ret) {
1938 dev_err(pctrl->dev, "pinctrl enable failed\n");
1939 return ret;
1940 }
1941
1942 ret = rzg2l_gpio_register(pctrl);
1943 if (ret) {
1944 dev_err(pctrl->dev, "failed to add GPIO chip: %i\n", ret);
1945 return ret;
1946 }
1947
1948 return 0;
1949 }
1950
rzg2l_pinctrl_probe(struct platform_device * pdev)1951 static int rzg2l_pinctrl_probe(struct platform_device *pdev)
1952 {
1953 struct rzg2l_pinctrl *pctrl;
1954 struct clk *clk;
1955 int ret;
1956
1957 BUILD_BUG_ON(ARRAY_SIZE(r9a07g044_gpio_configs) * RZG2L_PINS_PER_PORT >
1958 ARRAY_SIZE(rzg2l_gpio_names));
1959
1960 BUILD_BUG_ON(ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT >
1961 ARRAY_SIZE(rzg2l_gpio_names));
1962
1963 BUILD_BUG_ON(ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT >
1964 ARRAY_SIZE(rzg2l_gpio_names));
1965
1966 pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
1967 if (!pctrl)
1968 return -ENOMEM;
1969
1970 pctrl->dev = &pdev->dev;
1971
1972 pctrl->data = of_device_get_match_data(&pdev->dev);
1973 if (!pctrl->data)
1974 return -EINVAL;
1975
1976 pctrl->base = devm_platform_ioremap_resource(pdev, 0);
1977 if (IS_ERR(pctrl->base))
1978 return PTR_ERR(pctrl->base);
1979
1980 clk = devm_clk_get_enabled(pctrl->dev, NULL);
1981 if (IS_ERR(clk))
1982 return dev_err_probe(pctrl->dev, PTR_ERR(clk),
1983 "failed to enable GPIO clk\n");
1984
1985 spin_lock_init(&pctrl->lock);
1986 spin_lock_init(&pctrl->bitmap_lock);
1987 mutex_init(&pctrl->mutex);
1988
1989 platform_set_drvdata(pdev, pctrl);
1990
1991 ret = rzg2l_pinctrl_register(pctrl);
1992 if (ret)
1993 return ret;
1994
1995 dev_info(pctrl->dev, "%s support registered\n", DRV_NAME);
1996 return 0;
1997 }
1998
1999 static const struct rzg2l_hwcfg rzg2l_hwcfg = {
2000 .regs = {
2001 .pwpr = 0x3014,
2002 .sd_ch = 0x3000,
2003 .eth_poc = 0x300c,
2004 },
2005 .iolh_groupa_ua = {
2006 /* 3v3 power source */
2007 [RZG2L_IOLH_IDX_3V3] = 2000, 4000, 8000, 12000,
2008 },
2009 .iolh_groupb_oi = { 100, 66, 50, 33, },
2010 };
2011
2012 static const struct rzg2l_hwcfg rzg3s_hwcfg = {
2013 .regs = {
2014 .pwpr = 0x3000,
2015 .sd_ch = 0x3004,
2016 .eth_poc = 0x3010,
2017 },
2018 .iolh_groupa_ua = {
2019 /* 1v8 power source */
2020 [RZG2L_IOLH_IDX_1V8] = 2200, 4400, 9000, 10000,
2021 /* 3v3 power source */
2022 [RZG2L_IOLH_IDX_3V3] = 1900, 4000, 8000, 9000,
2023 },
2024 .iolh_groupb_ua = {
2025 /* 1v8 power source */
2026 [RZG2L_IOLH_IDX_1V8] = 7000, 8000, 9000, 10000,
2027 /* 3v3 power source */
2028 [RZG2L_IOLH_IDX_3V3] = 4000, 6000, 8000, 9000,
2029 },
2030 .iolh_groupc_ua = {
2031 /* 1v8 power source */
2032 [RZG2L_IOLH_IDX_1V8] = 5200, 6000, 6550, 6800,
2033 /* 2v5 source */
2034 [RZG2L_IOLH_IDX_2V5] = 4700, 5300, 5800, 6100,
2035 /* 3v3 power source */
2036 [RZG2L_IOLH_IDX_3V3] = 4500, 5200, 5700, 6050,
2037 },
2038 .drive_strength_ua = true,
2039 .func_base = 1,
2040 .oen_max_pin = 1, /* Pin 1 of P0 and P7 is the maximum OEN pin. */
2041 .oen_max_port = 7, /* P7_1 is the maximum OEN port. */
2042 };
2043
2044 static struct rzg2l_pinctrl_data r9a07g043_data = {
2045 .port_pins = rzg2l_gpio_names,
2046 .port_pin_configs = r9a07g043_gpio_configs,
2047 .n_ports = ARRAY_SIZE(r9a07g043_gpio_configs),
2048 .dedicated_pins = rzg2l_dedicated_pins.common,
2049 .n_port_pins = ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT,
2050 .n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common),
2051 .hwcfg = &rzg2l_hwcfg,
2052 };
2053
2054 static struct rzg2l_pinctrl_data r9a07g044_data = {
2055 .port_pins = rzg2l_gpio_names,
2056 .port_pin_configs = r9a07g044_gpio_configs,
2057 .n_ports = ARRAY_SIZE(r9a07g044_gpio_configs),
2058 .dedicated_pins = rzg2l_dedicated_pins.common,
2059 .n_port_pins = ARRAY_SIZE(r9a07g044_gpio_configs) * RZG2L_PINS_PER_PORT,
2060 .n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common) +
2061 ARRAY_SIZE(rzg2l_dedicated_pins.rzg2l_pins),
2062 .hwcfg = &rzg2l_hwcfg,
2063 };
2064
2065 static struct rzg2l_pinctrl_data r9a08g045_data = {
2066 .port_pins = rzg2l_gpio_names,
2067 .port_pin_configs = r9a08g045_gpio_configs,
2068 .n_ports = ARRAY_SIZE(r9a08g045_gpio_configs),
2069 .dedicated_pins = rzg3s_dedicated_pins,
2070 .n_port_pins = ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT,
2071 .n_dedicated_pins = ARRAY_SIZE(rzg3s_dedicated_pins),
2072 .hwcfg = &rzg3s_hwcfg,
2073 };
2074
2075 static const struct of_device_id rzg2l_pinctrl_of_table[] = {
2076 {
2077 .compatible = "renesas,r9a07g043-pinctrl",
2078 .data = &r9a07g043_data,
2079 },
2080 {
2081 .compatible = "renesas,r9a07g044-pinctrl",
2082 .data = &r9a07g044_data,
2083 },
2084 {
2085 .compatible = "renesas,r9a08g045-pinctrl",
2086 .data = &r9a08g045_data,
2087 },
2088 { /* sentinel */ }
2089 };
2090
2091 static struct platform_driver rzg2l_pinctrl_driver = {
2092 .driver = {
2093 .name = DRV_NAME,
2094 .of_match_table = of_match_ptr(rzg2l_pinctrl_of_table),
2095 },
2096 .probe = rzg2l_pinctrl_probe,
2097 };
2098
rzg2l_pinctrl_init(void)2099 static int __init rzg2l_pinctrl_init(void)
2100 {
2101 return platform_driver_register(&rzg2l_pinctrl_driver);
2102 }
2103 core_initcall(rzg2l_pinctrl_init);
2104
2105 MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>");
2106 MODULE_DESCRIPTION("Pin and gpio controller driver for RZ/G2L family");
2107