Lines Matching +full:input +full:- +full:polarity +full:- +full:invert
1 // SPDX-License-Identifier: GPL-2.0-only
119 { "irq-gpios", &pca953x_irq_gpios, 1, ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER },
131 ret = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(dev), "irq-gpios", 0); in pca953x_acpi_get_irq()
145 * relative. Since first controller (gpio-sch.c) and
146 * second (gpio-dwapb.c) are at the fixed bases, we may
168 #define NBANK(chip) DIV_ROUND_UP(chip->gpio_chip.ngpio, BANK_SZ)
173 int input; member
174 int invert; member
180 .input = PCA953X_INPUT,
181 .invert = PCA953X_INVERT,
187 .input = PCA957X_IN,
188 .invert = PCA957X_INVRT,
217 return fls((chip->gpio_chip.ngpio - 1) / BANK_SZ); in pca953x_bank_shift()
239 * - Standard set, below 0x40, each port can be replicated up to 8 times
240 * - PCA953x standard
241 * Input port 0x00 + 0 * bank_size R
243 * Polarity Inversion port 0x00 + 2 * bank_size RW
245 * - PCA957x with mixed up registers
246 * Input port 0x00 + 0 * bank_size R
247 * Polarity Inversion port 0x00 + 1 * bank_size RW
252 * - Extended set, above 0x40, often chip specific.
253 * - PCAL6524/PCAL9555A with custom PCAL IRQ handling:
254 * Input latch register 0x40 + 2 * bank_size RW
255 * Pull-up/pull-down enable reg 0x40 + 3 * bank_size RW
256 * Pull-up/pull-down select reg 0x40 + 4 * bank_size RW
260 * - Registers with bit 0x80 set, the AI bit
270 int offset = reg & (BIT(bank_shift) - 1); in pca953x_check_register()
274 if (!(chip->driver_data & PCA_PCAL)) in pca953x_check_register()
295 if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE) { in pca953x_readable_register()
304 if (chip->driver_data & PCA_PCAL) { in pca953x_readable_register()
318 if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE) { in pca953x_writeable_register()
326 if (chip->driver_data & PCA_PCAL) in pca953x_writeable_register()
338 if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE) in pca953x_volatile_register()
343 if (chip->driver_data & PCA_PCAL) in pca953x_volatile_register()
400 ret = regmap_bulk_write(chip->regmap, regaddr, value, NBANK(chip)); in pca953x_write_regs()
402 dev_err(&chip->client->dev, "failed writing register\n"); in pca953x_write_regs()
415 ret = regmap_bulk_read(chip->regmap, regaddr, value, NBANK(chip)); in pca953x_read_regs()
417 dev_err(&chip->client->dev, "failed reading register\n"); in pca953x_read_regs()
430 u8 dirreg = pca953x_recalc_addr(chip, chip->regs->direction, off); in pca953x_gpio_direction_input()
434 mutex_lock(&chip->i2c_lock); in pca953x_gpio_direction_input()
435 ret = regmap_write_bits(chip->regmap, dirreg, bit, bit); in pca953x_gpio_direction_input()
436 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_direction_input()
444 u8 dirreg = pca953x_recalc_addr(chip, chip->regs->direction, off); in pca953x_gpio_direction_output()
445 u8 outreg = pca953x_recalc_addr(chip, chip->regs->output, off); in pca953x_gpio_direction_output()
449 mutex_lock(&chip->i2c_lock); in pca953x_gpio_direction_output()
451 ret = regmap_write_bits(chip->regmap, outreg, bit, val ? bit : 0); in pca953x_gpio_direction_output()
456 ret = regmap_write_bits(chip->regmap, dirreg, bit, 0); in pca953x_gpio_direction_output()
458 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_direction_output()
465 u8 inreg = pca953x_recalc_addr(chip, chip->regs->input, off); in pca953x_gpio_get_value()
470 mutex_lock(&chip->i2c_lock); in pca953x_gpio_get_value()
471 ret = regmap_read(chip->regmap, inreg, ®_val); in pca953x_gpio_get_value()
472 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_get_value()
482 u8 outreg = pca953x_recalc_addr(chip, chip->regs->output, off); in pca953x_gpio_set_value()
485 mutex_lock(&chip->i2c_lock); in pca953x_gpio_set_value()
486 regmap_write_bits(chip->regmap, outreg, bit, val ? bit : 0); in pca953x_gpio_set_value()
487 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_set_value()
493 u8 dirreg = pca953x_recalc_addr(chip, chip->regs->direction, off); in pca953x_gpio_get_direction()
498 mutex_lock(&chip->i2c_lock); in pca953x_gpio_get_direction()
499 ret = regmap_read(chip->regmap, dirreg, ®_val); in pca953x_gpio_get_direction()
500 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_get_direction()
517 mutex_lock(&chip->i2c_lock); in pca953x_gpio_get_multiple()
518 ret = pca953x_read_regs(chip, chip->regs->input, reg_val); in pca953x_gpio_get_multiple()
519 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_get_multiple()
523 bitmap_replace(bits, bits, reg_val, mask, gc->ngpio); in pca953x_gpio_get_multiple()
534 mutex_lock(&chip->i2c_lock); in pca953x_gpio_set_multiple()
535 ret = pca953x_read_regs(chip, chip->regs->output, reg_val); in pca953x_gpio_set_multiple()
539 bitmap_replace(reg_val, reg_val, bits, mask, gc->ngpio); in pca953x_gpio_set_multiple()
541 pca953x_write_regs(chip, chip->regs->output, reg_val); in pca953x_gpio_set_multiple()
543 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_set_multiple()
556 * pull-up/pull-down configuration requires PCAL extended in pca953x_gpio_set_pull_up_down()
559 if (!(chip->driver_data & PCA_PCAL)) in pca953x_gpio_set_pull_up_down()
560 return -ENOTSUPP; in pca953x_gpio_set_pull_up_down()
562 mutex_lock(&chip->i2c_lock); in pca953x_gpio_set_pull_up_down()
564 /* Configure pull-up/pull-down */ in pca953x_gpio_set_pull_up_down()
566 ret = regmap_write_bits(chip->regmap, pull_sel_reg, bit, bit); in pca953x_gpio_set_pull_up_down()
568 ret = regmap_write_bits(chip->regmap, pull_sel_reg, bit, 0); in pca953x_gpio_set_pull_up_down()
574 /* Disable/Enable pull-up/pull-down */ in pca953x_gpio_set_pull_up_down()
576 ret = regmap_write_bits(chip->regmap, pull_en_reg, bit, 0); in pca953x_gpio_set_pull_up_down()
578 ret = regmap_write_bits(chip->regmap, pull_en_reg, bit, bit); in pca953x_gpio_set_pull_up_down()
581 mutex_unlock(&chip->i2c_lock); in pca953x_gpio_set_pull_up_down()
597 return -ENOTSUPP; in pca953x_gpio_set_config()
605 gc = &chip->gpio_chip; in pca953x_setup_gpio()
607 gc->direction_input = pca953x_gpio_direction_input; in pca953x_setup_gpio()
608 gc->direction_output = pca953x_gpio_direction_output; in pca953x_setup_gpio()
609 gc->get = pca953x_gpio_get_value; in pca953x_setup_gpio()
610 gc->set = pca953x_gpio_set_value; in pca953x_setup_gpio()
611 gc->get_direction = pca953x_gpio_get_direction; in pca953x_setup_gpio()
612 gc->get_multiple = pca953x_gpio_get_multiple; in pca953x_setup_gpio()
613 gc->set_multiple = pca953x_gpio_set_multiple; in pca953x_setup_gpio()
614 gc->set_config = pca953x_gpio_set_config; in pca953x_setup_gpio()
615 gc->can_sleep = true; in pca953x_setup_gpio()
617 gc->base = chip->gpio_start; in pca953x_setup_gpio()
618 gc->ngpio = gpios; in pca953x_setup_gpio()
619 gc->label = dev_name(&chip->client->dev); in pca953x_setup_gpio()
620 gc->parent = &chip->client->dev; in pca953x_setup_gpio()
621 gc->owner = THIS_MODULE; in pca953x_setup_gpio()
622 gc->names = chip->names; in pca953x_setup_gpio()
632 clear_bit(hwirq, chip->irq_mask); in pca953x_irq_mask()
641 set_bit(hwirq, chip->irq_mask); in pca953x_irq_unmask()
650 atomic_inc(&chip->wakeup_path); in pca953x_irq_set_wake()
652 atomic_dec(&chip->wakeup_path); in pca953x_irq_set_wake()
654 return irq_set_irq_wake(chip->client->irq, on); in pca953x_irq_set_wake()
662 mutex_lock(&chip->irq_lock); in pca953x_irq_bus_lock()
673 if (chip->driver_data & PCA_PCAL) { in pca953x_irq_bus_sync_unlock()
674 /* Enable latch on interrupt-enabled inputs */ in pca953x_irq_bus_sync_unlock()
675 pca953x_write_regs(chip, PCAL953X_IN_LATCH, chip->irq_mask); in pca953x_irq_bus_sync_unlock()
677 bitmap_complement(irq_mask, chip->irq_mask, gc->ngpio); in pca953x_irq_bus_sync_unlock()
683 /* Switch direction to input if needed */ in pca953x_irq_bus_sync_unlock()
684 pca953x_read_regs(chip, chip->regs->direction, reg_direction); in pca953x_irq_bus_sync_unlock()
686 bitmap_or(irq_mask, chip->irq_trig_fall, chip->irq_trig_raise, gc->ngpio); in pca953x_irq_bus_sync_unlock()
687 bitmap_complement(reg_direction, reg_direction, gc->ngpio); in pca953x_irq_bus_sync_unlock()
688 bitmap_and(irq_mask, irq_mask, reg_direction, gc->ngpio); in pca953x_irq_bus_sync_unlock()
691 for_each_set_bit(level, irq_mask, gc->ngpio) in pca953x_irq_bus_sync_unlock()
692 pca953x_gpio_direction_input(&chip->gpio_chip, level); in pca953x_irq_bus_sync_unlock()
694 mutex_unlock(&chip->irq_lock); in pca953x_irq_bus_sync_unlock()
704 dev_err(&chip->client->dev, "irq %d: unsupported type %d\n", in pca953x_irq_set_type()
705 d->irq, type); in pca953x_irq_set_type()
706 return -EINVAL; in pca953x_irq_set_type()
709 assign_bit(hwirq, chip->irq_trig_fall, type & IRQ_TYPE_EDGE_FALLING); in pca953x_irq_set_type()
710 assign_bit(hwirq, chip->irq_trig_raise, type & IRQ_TYPE_EDGE_RISING); in pca953x_irq_set_type()
721 clear_bit(hwirq, chip->irq_trig_raise); in pca953x_irq_shutdown()
722 clear_bit(hwirq, chip->irq_trig_fall); in pca953x_irq_shutdown()
727 struct gpio_chip *gc = &chip->gpio_chip; in pca953x_irq_pending()
735 if (chip->driver_data & PCA_PCAL) { in pca953x_irq_pending()
742 ret = pca953x_read_regs(chip, chip->regs->input, cur_stat); in pca953x_irq_pending()
747 bitmap_replace(new_stat, chip->irq_trig_fall, chip->irq_trig_raise, cur_stat, gc->ngpio); in pca953x_irq_pending()
749 bitmap_and(pending, new_stat, trigger, gc->ngpio); in pca953x_irq_pending()
751 return !bitmap_empty(pending, gc->ngpio); in pca953x_irq_pending()
754 ret = pca953x_read_regs(chip, chip->regs->input, cur_stat); in pca953x_irq_pending()
759 pca953x_read_regs(chip, chip->regs->direction, reg_direction); in pca953x_irq_pending()
761 bitmap_copy(old_stat, chip->irq_stat, gc->ngpio); in pca953x_irq_pending()
763 bitmap_and(new_stat, cur_stat, reg_direction, gc->ngpio); in pca953x_irq_pending()
764 bitmap_xor(cur_stat, new_stat, old_stat, gc->ngpio); in pca953x_irq_pending()
765 bitmap_and(trigger, cur_stat, chip->irq_mask, gc->ngpio); in pca953x_irq_pending()
767 bitmap_copy(chip->irq_stat, new_stat, gc->ngpio); in pca953x_irq_pending()
769 if (bitmap_empty(trigger, gc->ngpio)) in pca953x_irq_pending()
772 bitmap_and(cur_stat, chip->irq_trig_fall, old_stat, gc->ngpio); in pca953x_irq_pending()
773 bitmap_and(old_stat, chip->irq_trig_raise, new_stat, gc->ngpio); in pca953x_irq_pending()
774 bitmap_or(new_stat, old_stat, cur_stat, gc->ngpio); in pca953x_irq_pending()
775 bitmap_and(pending, new_stat, trigger, gc->ngpio); in pca953x_irq_pending()
777 return !bitmap_empty(pending, gc->ngpio); in pca953x_irq_pending()
783 struct gpio_chip *gc = &chip->gpio_chip; in pca953x_irq_handler()
790 mutex_lock(&chip->i2c_lock); in pca953x_irq_handler()
792 mutex_unlock(&chip->i2c_lock); in pca953x_irq_handler()
797 for_each_set_bit(level, pending, gc->ngpio) { in pca953x_irq_handler()
798 int nested_irq = irq_find_mapping(gc->irq.domain, level); in pca953x_irq_handler()
801 dev_warn_ratelimited(gc->parent, "unmapped interrupt %d\n", level); in pca953x_irq_handler()
815 struct i2c_client *client = chip->client; in pca953x_irq_setup()
816 struct irq_chip *irq_chip = &chip->irq_chip; in pca953x_irq_setup()
823 ret = pca953x_acpi_get_irq(&client->dev); in pca953x_irq_setup()
825 client->irq = ret; in pca953x_irq_setup()
828 if (!client->irq) in pca953x_irq_setup()
831 if (irq_base == -1) in pca953x_irq_setup()
834 if (!(chip->driver_data & PCA_INT)) in pca953x_irq_setup()
837 ret = pca953x_read_regs(chip, chip->regs->input, irq_stat); in pca953x_irq_setup()
846 pca953x_read_regs(chip, chip->regs->direction, reg_direction); in pca953x_irq_setup()
847 bitmap_and(chip->irq_stat, irq_stat, reg_direction, chip->gpio_chip.ngpio); in pca953x_irq_setup()
848 mutex_init(&chip->irq_lock); in pca953x_irq_setup()
850 irq_chip->name = dev_name(&client->dev); in pca953x_irq_setup()
851 irq_chip->irq_mask = pca953x_irq_mask; in pca953x_irq_setup()
852 irq_chip->irq_unmask = pca953x_irq_unmask; in pca953x_irq_setup()
853 irq_chip->irq_set_wake = pca953x_irq_set_wake; in pca953x_irq_setup()
854 irq_chip->irq_bus_lock = pca953x_irq_bus_lock; in pca953x_irq_setup()
855 irq_chip->irq_bus_sync_unlock = pca953x_irq_bus_sync_unlock; in pca953x_irq_setup()
856 irq_chip->irq_set_type = pca953x_irq_set_type; in pca953x_irq_setup()
857 irq_chip->irq_shutdown = pca953x_irq_shutdown; in pca953x_irq_setup()
859 girq = &chip->gpio_chip.irq; in pca953x_irq_setup()
860 girq->chip = irq_chip; in pca953x_irq_setup()
862 girq->parent_handler = NULL; in pca953x_irq_setup()
863 girq->num_parents = 0; in pca953x_irq_setup()
864 girq->parents = NULL; in pca953x_irq_setup()
865 girq->default_type = IRQ_TYPE_NONE; in pca953x_irq_setup()
866 girq->handler = handle_simple_irq; in pca953x_irq_setup()
867 girq->threaded = true; in pca953x_irq_setup()
868 girq->first = irq_base; /* FIXME: get rid of this */ in pca953x_irq_setup()
870 ret = devm_request_threaded_irq(&client->dev, client->irq, in pca953x_irq_setup()
873 dev_name(&client->dev), chip); in pca953x_irq_setup()
875 dev_err(&client->dev, "failed to request irq %d\n", in pca953x_irq_setup()
876 client->irq); in pca953x_irq_setup()
887 struct i2c_client *client = chip->client; in pca953x_irq_setup()
889 if (client->irq && irq_base != -1 && (chip->driver_data & PCA_INT)) in pca953x_irq_setup()
890 dev_warn(&client->dev, "interrupt support not compiled in\n"); in pca953x_irq_setup()
896 static int device_pca95xx_init(struct pca953x_chip *chip, u32 invert) in device_pca95xx_init() argument
902 regaddr = pca953x_recalc_addr(chip, chip->regs->output, 0); in device_pca95xx_init()
903 ret = regcache_sync_region(chip->regmap, regaddr, in device_pca95xx_init()
904 regaddr + NBANK(chip) - 1); in device_pca95xx_init()
908 regaddr = pca953x_recalc_addr(chip, chip->regs->direction, 0); in device_pca95xx_init()
909 ret = regcache_sync_region(chip->regmap, regaddr, in device_pca95xx_init()
910 regaddr + NBANK(chip) - 1); in device_pca95xx_init()
914 /* set platform specific polarity inversion */ in device_pca95xx_init()
915 if (invert) in device_pca95xx_init()
920 ret = pca953x_write_regs(chip, chip->regs->invert, val); in device_pca95xx_init()
925 static int device_pca957x_init(struct pca953x_chip *chip, u32 invert) in device_pca957x_init() argument
931 ret = device_pca95xx_init(chip, invert); in device_pca957x_init()
955 u32 invert = 0; in pca953x_probe() local
959 chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); in pca953x_probe()
961 return -ENOMEM; in pca953x_probe()
963 pdata = dev_get_platdata(&client->dev); in pca953x_probe()
965 irq_base = pdata->irq_base; in pca953x_probe()
966 chip->gpio_start = pdata->gpio_base; in pca953x_probe()
967 invert = pdata->invert; in pca953x_probe()
968 chip->names = pdata->names; in pca953x_probe()
972 chip->gpio_start = -1; in pca953x_probe()
976 * See if we need to de-assert a reset pin. in pca953x_probe()
978 * There is no known ACPI-enabled platforms that are in pca953x_probe()
982 reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", in pca953x_probe()
988 chip->client = client; in pca953x_probe()
990 reg = devm_regulator_get(&client->dev, "vcc"); in pca953x_probe()
992 return dev_err_probe(&client->dev, PTR_ERR(reg), "reg get err\n"); in pca953x_probe()
996 dev_err(&client->dev, "reg en err: %d\n", ret); in pca953x_probe()
999 chip->regulator = reg; in pca953x_probe()
1002 chip->driver_data = i2c_id->driver_data; in pca953x_probe()
1006 match = device_get_match_data(&client->dev); in pca953x_probe()
1008 ret = -ENODEV; in pca953x_probe()
1012 chip->driver_data = (uintptr_t)match; in pca953x_probe()
1017 pca953x_setup_gpio(chip, chip->driver_data & PCA_GPIO_MASK); in pca953x_probe()
1019 if (NBANK(chip) > 2 || PCA_CHIP_TYPE(chip->driver_data) == PCA957X_TYPE) { in pca953x_probe()
1020 dev_info(&client->dev, "using AI\n"); in pca953x_probe()
1023 dev_info(&client->dev, "using no AI\n"); in pca953x_probe()
1027 chip->regmap = devm_regmap_init_i2c(client, regmap_config); in pca953x_probe()
1028 if (IS_ERR(chip->regmap)) { in pca953x_probe()
1029 ret = PTR_ERR(chip->regmap); in pca953x_probe()
1033 regcache_mark_dirty(chip->regmap); in pca953x_probe()
1035 mutex_init(&chip->i2c_lock); in pca953x_probe()
1037 * In case we have an i2c-mux controlled by a GPIO provided by an in pca953x_probe()
1040 * subclass for chip->i2c_lock. in pca953x_probe()
1043 * false positives when the expander controlling the i2c-mux is on in pca953x_probe()
1049 * applied to all other i2c-controlled GPIO expanders (and potentially in pca953x_probe()
1050 * regmap-i2c). in pca953x_probe()
1052 lockdep_set_subclass(&chip->i2c_lock, in pca953x_probe()
1053 i2c_adapter_depth(client->adapter)); in pca953x_probe()
1059 if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE) { in pca953x_probe()
1060 chip->regs = &pca953x_regs; in pca953x_probe()
1061 ret = device_pca95xx_init(chip, invert); in pca953x_probe()
1063 chip->regs = &pca957x_regs; in pca953x_probe()
1064 ret = device_pca957x_init(chip, invert); in pca953x_probe()
1073 ret = devm_gpiochip_add_data(&client->dev, &chip->gpio_chip, chip); in pca953x_probe()
1077 if (pdata && pdata->setup) { in pca953x_probe()
1078 ret = pdata->setup(client, chip->gpio_chip.base, in pca953x_probe()
1079 chip->gpio_chip.ngpio, pdata->context); in pca953x_probe()
1081 dev_warn(&client->dev, "setup failed, %d\n", ret); in pca953x_probe()
1087 regulator_disable(chip->regulator); in pca953x_probe()
1093 struct pca953x_platform_data *pdata = dev_get_platdata(&client->dev); in pca953x_remove()
1097 if (pdata && pdata->teardown) { in pca953x_remove()
1098 ret = pdata->teardown(client, chip->gpio_chip.base, in pca953x_remove()
1099 chip->gpio_chip.ngpio, pdata->context); in pca953x_remove()
1101 dev_err(&client->dev, "teardown failed, %d\n", ret); in pca953x_remove()
1106 regulator_disable(chip->regulator); in pca953x_remove()
1122 regaddr = pca953x_recalc_addr(chip, chip->regs->direction, 0); in pca953x_regcache_sync()
1123 ret = regcache_sync_region(chip->regmap, regaddr, regaddr + NBANK(chip) - 1); in pca953x_regcache_sync()
1129 regaddr = pca953x_recalc_addr(chip, chip->regs->output, 0); in pca953x_regcache_sync()
1130 ret = regcache_sync_region(chip->regmap, regaddr, regaddr + NBANK(chip) - 1); in pca953x_regcache_sync()
1137 if (chip->driver_data & PCA_PCAL) { in pca953x_regcache_sync()
1139 ret = regcache_sync_region(chip->regmap, regaddr, in pca953x_regcache_sync()
1140 regaddr + NBANK(chip) - 1); in pca953x_regcache_sync()
1148 ret = regcache_sync_region(chip->regmap, regaddr, in pca953x_regcache_sync()
1149 regaddr + NBANK(chip) - 1); in pca953x_regcache_sync()
1165 mutex_lock(&chip->i2c_lock); in pca953x_suspend()
1166 regcache_cache_only(chip->regmap, true); in pca953x_suspend()
1167 mutex_unlock(&chip->i2c_lock); in pca953x_suspend()
1169 if (atomic_read(&chip->wakeup_path)) in pca953x_suspend()
1172 regulator_disable(chip->regulator); in pca953x_suspend()
1182 if (!atomic_read(&chip->wakeup_path)) { in pca953x_resume()
1183 ret = regulator_enable(chip->regulator); in pca953x_resume()
1190 mutex_lock(&chip->i2c_lock); in pca953x_resume()
1191 regcache_cache_only(chip->regmap, false); in pca953x_resume()
1192 regcache_mark_dirty(chip->regmap); in pca953x_resume()
1195 mutex_unlock(&chip->i2c_lock); in pca953x_resume()
1199 ret = regcache_sync(chip->regmap); in pca953x_resume()
1200 mutex_unlock(&chip->i2c_lock); in pca953x_resume()
1210 /* convenience to stop overlong match-table lines */