1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2013 Google, Inc
8 #include <dm/device_compat.h>
9 #include <dm/device-internal.h>
11 #include <dm/uclass-internal.h>
12 #include <dt-bindings/gpio/gpio.h>
17 #include <linux/bug.h>
18 #include <linux/ctype.h>
20 DECLARE_GLOBAL_DATA_PTR;
23 * gpio_desc_init() - Initialize the GPIO descriptor
25 * @desc: GPIO descriptor to initialize
27 * @offset: Offset of device GPIO
29 static void gpio_desc_init(struct gpio_desc *desc,
34 desc->offset = offset;
39 * gpio_to_device() - Convert global GPIO number to device, number
41 * Convert the GPIO number to an entry in the list of GPIOs
42 * or GPIO blocks registered with the GPIO controller. Returns
43 * entry on success, NULL on error.
45 * @gpio: The numeric representation of the GPIO
46 * @desc: Returns description (desc->flags will always be 0)
47 * @return 0 if found, -ENOENT if not found
49 static int gpio_to_device(unsigned int gpio, struct gpio_desc *desc)
51 struct gpio_dev_priv *uc_priv;
55 for (ret = uclass_first_device(UCLASS_GPIO, &dev);
57 ret = uclass_next_device(&dev)) {
58 uc_priv = dev_get_uclass_priv(dev);
59 if (gpio >= uc_priv->gpio_base &&
60 gpio < uc_priv->gpio_base + uc_priv->gpio_count) {
61 gpio_desc_init(desc, dev, gpio - uc_priv->gpio_base);
67 return ret ? ret : -ENOENT;
70 int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc)
72 struct gpio_dev_priv *uc_priv = NULL;
78 numeric = isdigit(*name) ? simple_strtoul(name, NULL, 10) : -1;
79 for (ret = uclass_first_device(UCLASS_GPIO, &dev);
81 ret = uclass_next_device(&dev)) {
84 uc_priv = dev_get_uclass_priv(dev);
86 offset = numeric - uc_priv->gpio_base;
87 /* Allow GPIOs to be numbered from 0 */
88 if (offset < uc_priv->gpio_count)
92 len = uc_priv->bank_name ? strlen(uc_priv->bank_name) : 0;
94 if (!strncasecmp(name, uc_priv->bank_name, len)) {
95 if (!strict_strtoul(name + len, 10, &offset))
101 return ret ? ret : -EINVAL;
103 gpio_desc_init(desc, dev, offset);
108 int gpio_lookup_name(const char *name, struct udevice **devp,
109 unsigned int *offsetp, unsigned int *gpiop)
111 struct gpio_desc desc;
116 ret = dm_gpio_lookup_name(name, &desc);
123 *offsetp = desc.offset;
125 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(desc.dev);
127 *gpiop = uc_priv->gpio_base + desc.offset;
133 int gpio_xlate_offs_flags(struct udevice *dev, struct gpio_desc *desc,
134 struct ofnode_phandle_args *args)
136 if (args->args_count < 1)
139 desc->offset = args->args[0];
141 if (args->args_count < 2)
144 if (args->args[1] & GPIO_ACTIVE_LOW)
145 desc->flags = GPIOD_ACTIVE_LOW;
150 static int gpio_find_and_xlate(struct gpio_desc *desc,
151 struct ofnode_phandle_args *args)
153 struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
156 return ops->xlate(desc->dev, desc, args);
158 return gpio_xlate_offs_flags(desc->dev, desc, args);
161 #if defined(CONFIG_GPIO_HOG)
163 struct gpio_hog_priv {
164 struct gpio_desc gpiod;
167 struct gpio_hog_data {
173 static int gpio_hog_ofdata_to_platdata(struct udevice *dev)
175 struct gpio_hog_data *plat = dev_get_platdata(dev);
176 const char *nodename;
180 if (dev_read_bool(dev, "input")) {
181 plat->gpiod_flags = GPIOD_IS_IN;
182 } else if (dev_read_bool(dev, "output-high")) {
184 plat->gpiod_flags = GPIOD_IS_OUT;
185 } else if (dev_read_bool(dev, "output-low")) {
186 plat->gpiod_flags = GPIOD_IS_OUT;
188 printf("%s: missing gpio-hog state.\n", __func__);
191 ret = dev_read_u32_array(dev, "gpios", plat->val, 2);
193 printf("%s: wrong gpios property, 2 values needed %d\n",
197 nodename = dev_read_string(dev, "line-name");
199 device_set_name(dev, nodename);
204 static int gpio_hog_probe(struct udevice *dev)
206 struct gpio_hog_data *plat = dev_get_platdata(dev);
207 struct gpio_hog_priv *priv = dev_get_priv(dev);
210 ret = gpio_dev_request_index(dev->parent, dev->name, "gpio-hog",
211 plat->val[0], plat->gpiod_flags,
212 plat->val[1], &priv->gpiod);
214 debug("%s: node %s could not get gpio.\n", __func__,
219 if (plat->gpiod_flags == GPIOD_IS_OUT) {
220 ret = dm_gpio_set_value(&priv->gpiod, plat->value);
222 debug("%s: node %s could not set gpio.\n", __func__,
231 int gpio_hog_probe_all(void)
237 for (uclass_first_device(UCLASS_NOP, &dev);
239 uclass_find_next_device(&dev)) {
240 if (dev->driver == DM_GET_DRIVER(gpio_hog)) {
241 ret = device_probe(dev);
243 printf("Failed to probe device %s err: %d\n",
253 int gpio_hog_lookup_name(const char *name, struct gpio_desc **desc)
258 gpio_hog_probe_all();
259 if (!uclass_get_device_by_name(UCLASS_NOP, name, &dev)) {
260 struct gpio_hog_priv *priv = dev_get_priv(dev);
262 *desc = &priv->gpiod;
269 U_BOOT_DRIVER(gpio_hog) = {
272 .ofdata_to_platdata = gpio_hog_ofdata_to_platdata,
273 .probe = gpio_hog_probe,
274 .priv_auto_alloc_size = sizeof(struct gpio_hog_priv),
275 .platdata_auto_alloc_size = sizeof(struct gpio_hog_data),
278 int gpio_hog_lookup_name(const char *name, struct gpio_desc **desc)
284 int dm_gpio_request(struct gpio_desc *desc, const char *label)
286 struct udevice *dev = desc->dev;
287 struct gpio_dev_priv *uc_priv;
291 uc_priv = dev_get_uclass_priv(dev);
292 if (uc_priv->name[desc->offset])
297 if (gpio_get_ops(dev)->request) {
298 ret = gpio_get_ops(dev)->request(dev, desc->offset, label);
304 uc_priv->name[desc->offset] = str;
309 static int dm_gpio_requestf(struct gpio_desc *desc, const char *fmt, ...)
311 #if !defined(CONFIG_SPL_BUILD) || !CONFIG_IS_ENABLED(USE_TINY_PRINTF)
316 vscnprintf(buf, sizeof(buf), fmt, args);
318 return dm_gpio_request(desc, buf);
320 return dm_gpio_request(desc, fmt);
325 * gpio_request() - [COMPAT] Request GPIO
327 * label: Name for the requested GPIO
329 * The label is copied and allocated so the caller does not need to keep
330 * the pointer around.
332 * This function implements the API that's compatible with current
333 * GPIO API used in U-Boot. The request is forwarded to particular
334 * GPIO driver. Returns 0 on success, negative value on error.
336 int gpio_request(unsigned gpio, const char *label)
338 struct gpio_desc desc;
341 ret = gpio_to_device(gpio, &desc);
345 return dm_gpio_request(&desc, label);
349 * gpio_requestf() - [COMPAT] Request GPIO
351 * @fmt: Format string for the requested GPIO
352 * @...: Arguments for the printf() format string
354 * This function implements the API that's compatible with current
355 * GPIO API used in U-Boot. The request is forwarded to particular
356 * GPIO driver. Returns 0 on success, negative value on error.
358 int gpio_requestf(unsigned gpio, const char *fmt, ...)
360 #if !defined(CONFIG_SPL_BUILD) || !CONFIG_IS_ENABLED(USE_TINY_PRINTF)
365 vscnprintf(buf, sizeof(buf), fmt, args);
367 return gpio_request(gpio, buf);
369 return gpio_request(gpio, fmt);
373 int _dm_gpio_free(struct udevice *dev, uint offset)
375 struct gpio_dev_priv *uc_priv;
378 uc_priv = dev_get_uclass_priv(dev);
379 if (!uc_priv->name[offset])
381 if (gpio_get_ops(dev)->rfree) {
382 ret = gpio_get_ops(dev)->rfree(dev, offset);
387 free(uc_priv->name[offset]);
388 uc_priv->name[offset] = NULL;
394 * gpio_free() - [COMPAT] Relinquish GPIO
397 * This function implements the API that's compatible with current
398 * GPIO API used in U-Boot. The request is forwarded to particular
399 * GPIO driver. Returns 0 on success, negative value on error.
401 int gpio_free(unsigned gpio)
403 struct gpio_desc desc;
406 ret = gpio_to_device(gpio, &desc);
410 return _dm_gpio_free(desc.dev, desc.offset);
413 static int check_reserved(const struct gpio_desc *desc, const char *func)
415 struct gpio_dev_priv *uc_priv;
417 if (!dm_gpio_is_valid(desc))
420 uc_priv = dev_get_uclass_priv(desc->dev);
421 if (!uc_priv->name[desc->offset]) {
422 printf("%s: %s: error: gpio %s%d not reserved\n",
423 desc->dev->name, func,
424 uc_priv->bank_name ? uc_priv->bank_name : "",
433 * gpio_direction_input() - [COMPAT] Set GPIO direction to input
436 * This function implements the API that's compatible with current
437 * GPIO API used in U-Boot. The request is forwarded to particular
438 * GPIO driver. Returns 0 on success, negative value on error.
440 int gpio_direction_input(unsigned gpio)
442 struct gpio_desc desc;
445 ret = gpio_to_device(gpio, &desc);
448 ret = check_reserved(&desc, "dir_input");
452 return gpio_get_ops(desc.dev)->direction_input(desc.dev, desc.offset);
456 * gpio_direction_output() - [COMPAT] Set GPIO direction to output and set value
458 * value: Logical value to be set on the GPIO pin
460 * This function implements the API that's compatible with current
461 * GPIO API used in U-Boot. The request is forwarded to particular
462 * GPIO driver. Returns 0 on success, negative value on error.
464 int gpio_direction_output(unsigned gpio, int value)
466 struct gpio_desc desc;
469 ret = gpio_to_device(gpio, &desc);
472 ret = check_reserved(&desc, "dir_output");
476 return gpio_get_ops(desc.dev)->direction_output(desc.dev,
480 static int _gpio_get_value(const struct gpio_desc *desc)
484 value = gpio_get_ops(desc->dev)->get_value(desc->dev, desc->offset);
486 return desc->flags & GPIOD_ACTIVE_LOW ? !value : value;
489 int dm_gpio_get_value(const struct gpio_desc *desc)
493 ret = check_reserved(desc, "get_value");
497 return _gpio_get_value(desc);
500 int dm_gpio_set_value(const struct gpio_desc *desc, int value)
504 ret = check_reserved(desc, "set_value");
508 if (desc->flags & GPIOD_ACTIVE_LOW)
510 gpio_get_ops(desc->dev)->set_value(desc->dev, desc->offset, value);
514 /* check dir flags invalid configuration */
515 static int check_dir_flags(ulong flags)
517 if ((flags & GPIOD_IS_OUT) && (flags & GPIOD_IS_IN)) {
518 log_debug("%s: flags 0x%lx has GPIOD_IS_OUT and GPIOD_IS_IN\n",
526 static int _dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags)
528 struct udevice *dev = desc->dev;
529 struct dm_gpio_ops *ops = gpio_get_ops(dev);
530 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
533 ret = check_dir_flags(flags);
536 "%s error: set_dir_flags for gpio %s%d has invalid dir flags 0x%lx\n",
538 uc_priv->bank_name ? uc_priv->bank_name : "",
539 desc->offset, flags);
544 if (flags & GPIOD_IS_OUT) {
545 ret = ops->direction_output(dev, desc->offset,
546 GPIOD_FLAGS_OUTPUT(flags));
547 } else if (flags & GPIOD_IS_IN) {
548 ret = ops->direction_input(dev, desc->offset);
554 int dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags)
558 ret = check_reserved(desc, "set_dir_flags");
562 ret = _dm_gpio_set_dir_flags(desc, flags);
564 /* update the descriptor flags */
571 int dm_gpio_set_dir(struct gpio_desc *desc)
575 ret = check_reserved(desc, "set_dir");
579 return _dm_gpio_set_dir_flags(desc, desc->flags);
583 * gpio_get_value() - [COMPAT] Sample GPIO pin and return it's value
586 * This function implements the API that's compatible with current
587 * GPIO API used in U-Boot. The request is forwarded to particular
588 * GPIO driver. Returns the value of the GPIO pin, or negative value
591 int gpio_get_value(unsigned gpio)
595 struct gpio_desc desc;
597 ret = gpio_to_device(gpio, &desc);
600 return dm_gpio_get_value(&desc);
604 * gpio_set_value() - [COMPAT] Configure logical value on GPIO pin
606 * value: Logical value to be set on the GPIO pin.
608 * This function implements the API that's compatible with current
609 * GPIO API used in U-Boot. The request is forwarded to particular
610 * GPIO driver. Returns 0 on success, negative value on error.
612 int gpio_set_value(unsigned gpio, int value)
614 struct gpio_desc desc;
617 ret = gpio_to_device(gpio, &desc);
620 return dm_gpio_set_value(&desc, value);
623 const char *gpio_get_bank_info(struct udevice *dev, int *bit_count)
625 struct gpio_dev_priv *priv;
627 /* Must be called on an active device */
628 priv = dev_get_uclass_priv(dev);
631 *bit_count = priv->gpio_count;
632 return priv->bank_name;
635 static const char * const gpio_function[GPIOF_COUNT] = {
643 static int get_function(struct udevice *dev, int offset, bool skip_unused,
646 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
647 struct dm_gpio_ops *ops = gpio_get_ops(dev);
649 BUILD_BUG_ON(GPIOF_COUNT != ARRAY_SIZE(gpio_function));
650 if (!device_active(dev))
652 if (offset < 0 || offset >= uc_priv->gpio_count)
655 *namep = uc_priv->name[offset];
656 if (skip_unused && !uc_priv->name[offset])
658 if (ops->get_function) {
661 ret = ops->get_function(dev, offset);
664 if (ret >= ARRAY_SIZE(gpio_function))
669 return GPIOF_UNKNOWN;
672 int gpio_get_function(struct udevice *dev, int offset, const char **namep)
674 return get_function(dev, offset, true, namep);
677 int gpio_get_raw_function(struct udevice *dev, int offset, const char **namep)
679 return get_function(dev, offset, false, namep);
682 int gpio_get_status(struct udevice *dev, int offset, char *buf, int buffsize)
684 struct dm_gpio_ops *ops = gpio_get_ops(dev);
685 struct gpio_dev_priv *priv;
691 BUILD_BUG_ON(GPIOF_COUNT != ARRAY_SIZE(gpio_function));
694 priv = dev_get_uclass_priv(dev);
695 ret = gpio_get_raw_function(dev, offset, NULL);
699 len = snprintf(str, buffsize, "%s%d: %s",
700 priv->bank_name ? priv->bank_name : "",
701 offset, gpio_function[func]);
702 if (func == GPIOF_INPUT || func == GPIOF_OUTPUT ||
703 func == GPIOF_UNUSED) {
707 ret = ops->get_value(dev, offset);
710 used = gpio_get_function(dev, offset, &label) != GPIOF_UNUSED;
711 snprintf(str + len, buffsize - len, ": %d [%c]%s%s",
721 int gpio_claim_vector(const int *gpio_num_array, const char *fmt)
726 for (i = 0; i < 32; i++) {
727 gpio = gpio_num_array[i];
730 ret = gpio_requestf(gpio, fmt, i);
733 ret = gpio_direction_input(gpio);
742 for (i--; i >= 0; i--)
743 gpio_free(gpio_num_array[i]);
749 * get a number comprised of multiple GPIO values. gpio_num_array points to
750 * the array of gpio pin numbers to scan, terminated by -1.
752 int gpio_get_values_as_int(const int *gpio_list)
755 unsigned bitmask = 1;
760 ((gpio = *gpio_list++) != -1)) {
761 ret = gpio_get_value(gpio);
772 int dm_gpio_get_values_as_int(const struct gpio_desc *desc_list, int count)
774 unsigned bitmask = 1;
778 for (i = 0; i < count; i++) {
779 ret = dm_gpio_get_value(&desc_list[i]);
791 * gpio_request_tail: common work for requesting a gpio.
793 * ret: return value from previous work in function which calls
795 * This seems bogus (why calling this function instead not
796 * calling it and end caller function instead?).
797 * Because on error in caller function we want to set some
798 * default values in gpio desc and have a common error
799 * debug message, which provides this function.
800 * nodename: Name of node for which gpio gets requested
801 * used for gpio label name.
802 * args: pointer to output arguments structure
803 * list_name: Name of GPIO list
804 * used for gpio label name.
805 * index: gpio index in gpio list
806 * used for gpio label name.
807 * desc: pointer to gpio descriptor, filled from this
809 * flags: gpio flags to use.
810 * add_index: should index added to gpio label name
811 * gpio_dev: pointer to gpio device from which the gpio
812 * will be requested. If NULL try to get the
813 * gpio device with uclass_get_device_by_ofnode()
815 * return: In error case this function sets default values in
816 * gpio descriptor, also emmits a debug message.
817 * On success it returns 0 else the error code from
818 * function calls, or the error code passed through
819 * ret to this function.
822 static int gpio_request_tail(int ret, const char *nodename,
823 struct ofnode_phandle_args *args,
824 const char *list_name, int index,
825 struct gpio_desc *desc, int flags,
826 bool add_index, struct udevice *gpio_dev)
828 gpio_desc_init(desc, gpio_dev, 0);
833 ret = uclass_get_device_by_ofnode(UCLASS_GPIO, args->node,
836 debug("%s: uclass_get_device_by_ofnode failed\n",
841 ret = gpio_find_and_xlate(desc, args);
843 debug("%s: gpio_find_and_xlate failed\n", __func__);
846 ret = dm_gpio_requestf(desc, add_index ? "%s.%s%d" : "%s.%s",
847 nodename, list_name, index);
849 debug("%s: dm_gpio_requestf failed\n", __func__);
852 ret = dm_gpio_set_dir_flags(desc, flags | desc->flags);
854 debug("%s: dm_gpio_set_dir failed\n", __func__);
860 debug("%s: Node '%s', property '%s', failed to request GPIO index %d: %d\n",
861 __func__, nodename, list_name, index, ret);
865 static int _gpio_request_by_name_nodev(ofnode node, const char *list_name,
866 int index, struct gpio_desc *desc,
867 int flags, bool add_index)
869 struct ofnode_phandle_args args;
872 ret = ofnode_parse_phandle_with_args(node, list_name, "#gpio-cells", 0,
875 return gpio_request_tail(ret, ofnode_get_name(node), &args, list_name,
876 index, desc, flags, add_index, NULL);
879 int gpio_request_by_name_nodev(ofnode node, const char *list_name, int index,
880 struct gpio_desc *desc, int flags)
882 return _gpio_request_by_name_nodev(node, list_name, index, desc, flags,
886 int gpio_request_by_name(struct udevice *dev, const char *list_name, int index,
887 struct gpio_desc *desc, int flags)
889 struct ofnode_phandle_args args;
893 ret = dev_read_phandle_with_args(dev, list_name, "#gpio-cells", 0,
895 node = dev_ofnode(dev);
896 return gpio_request_tail(ret, ofnode_get_name(node), &args, list_name,
897 index, desc, flags, index > 0, NULL);
900 int gpio_request_list_by_name_nodev(ofnode node, const char *list_name,
901 struct gpio_desc *desc, int max_count,
907 for (count = 0; count < max_count; count++) {
908 ret = _gpio_request_by_name_nodev(node, list_name, count,
909 &desc[count], flags, true);
916 /* We ran out of GPIOs in the list */
920 gpio_free_list_nodev(desc, count - 1);
925 int gpio_request_list_by_name(struct udevice *dev, const char *list_name,
926 struct gpio_desc *desc, int max_count,
930 * This isn't ideal since we don't use dev->name in the debug()
931 * calls in gpio_request_by_name(), but we can do this until
932 * gpio_request_list_by_name_nodev() can be dropped.
934 return gpio_request_list_by_name_nodev(dev_ofnode(dev), list_name, desc,
938 int gpio_get_list_count(struct udevice *dev, const char *list_name)
942 ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
943 list_name, "#gpio-cells", 0, -1,
946 debug("%s: Node '%s', property '%s', GPIO count failed: %d\n",
947 __func__, dev->name, list_name, ret);
953 int dm_gpio_free(struct udevice *dev, struct gpio_desc *desc)
955 /* For now, we don't do any checking of dev */
956 return _dm_gpio_free(desc->dev, desc->offset);
959 int gpio_free_list(struct udevice *dev, struct gpio_desc *desc, int count)
963 /* For now, we don't do any checking of dev */
964 for (i = 0; i < count; i++)
965 dm_gpio_free(dev, &desc[i]);
970 int gpio_free_list_nodev(struct gpio_desc *desc, int count)
972 return gpio_free_list(NULL, desc, count);
975 /* We need to renumber the GPIOs when any driver is probed/removed */
976 static int gpio_renumber(struct udevice *removed_dev)
978 struct gpio_dev_priv *uc_priv;
984 ret = uclass_get(UCLASS_GPIO, &uc);
988 /* Ensure that we have a base for each bank */
990 uclass_foreach_dev(dev, uc) {
991 if (device_active(dev) && dev != removed_dev) {
992 uc_priv = dev_get_uclass_priv(dev);
993 uc_priv->gpio_base = base;
994 base += uc_priv->gpio_count;
1001 int gpio_get_number(const struct gpio_desc *desc)
1003 struct udevice *dev = desc->dev;
1004 struct gpio_dev_priv *uc_priv;
1008 uc_priv = dev->uclass_priv;
1010 return uc_priv->gpio_base + desc->offset;
1013 static int gpio_post_probe(struct udevice *dev)
1015 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
1017 uc_priv->name = calloc(uc_priv->gpio_count, sizeof(char *));
1021 return gpio_renumber(NULL);
1024 static int gpio_pre_remove(struct udevice *dev)
1026 struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
1029 for (i = 0; i < uc_priv->gpio_count; i++) {
1030 if (uc_priv->name[i])
1031 free(uc_priv->name[i]);
1033 free(uc_priv->name);
1035 return gpio_renumber(dev);
1038 int gpio_dev_request_index(struct udevice *dev, const char *nodename,
1039 char *list_name, int index, int flags,
1040 int dtflags, struct gpio_desc *desc)
1042 struct ofnode_phandle_args args;
1044 args.node = ofnode_null();
1045 args.args_count = 2;
1046 args.args[0] = index;
1047 args.args[1] = dtflags;
1049 return gpio_request_tail(0, nodename, &args, list_name, index, desc,
1053 static int gpio_post_bind(struct udevice *dev)
1055 struct udevice *child;
1058 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
1059 struct dm_gpio_ops *ops = (struct dm_gpio_ops *)device_get_ops(dev);
1060 static int reloc_done;
1064 ops->request += gd->reloc_off;
1066 ops->rfree += gd->reloc_off;
1067 if (ops->direction_input)
1068 ops->direction_input += gd->reloc_off;
1069 if (ops->direction_output)
1070 ops->direction_output += gd->reloc_off;
1072 ops->get_value += gd->reloc_off;
1074 ops->set_value += gd->reloc_off;
1075 if (ops->get_function)
1076 ops->get_function += gd->reloc_off;
1078 ops->xlate += gd->reloc_off;
1084 if (IS_ENABLED(CONFIG_GPIO_HOG)) {
1085 dev_for_each_subnode(node, dev) {
1086 if (ofnode_read_bool(node, "gpio-hog")) {
1087 const char *name = ofnode_get_name(node);
1090 ret = device_bind_driver_to_node(dev,
1102 UCLASS_DRIVER(gpio) = {
1105 .flags = DM_UC_FLAG_SEQ_ALIAS,
1106 .post_probe = gpio_post_probe,
1107 .post_bind = gpio_post_bind,
1108 .pre_remove = gpio_pre_remove,
1109 .per_device_auto_alloc_size = sizeof(struct gpio_dev_priv),