Lines Matching +full:irq +full:- +full:mirror
1 // SPDX-License-Identifier: GPL-2.0-only
20 #include <linux/pinctrl/pinconf-generic.h>
22 #include "pinctrl-mcp23s08.h"
89 .disable_locking = true, /* mcp->lock protects the regmap */
136 .disable_locking = true, /* mcp->lock protects the regmap */
142 return regmap_read(mcp->regmap, reg << mcp->reg_shift, val); in mcp_read()
147 return regmap_write(mcp->regmap, reg << mcp->reg_shift, val); in mcp_write()
153 return regmap_update_bits(mcp->regmap, reg << mcp->reg_shift, in mcp_update_bits()
210 return -ENOTSUPP; in mcp_pinctrl_get_group_pins()
233 mutex_lock(&mcp->lock); in mcp_pinconf_get()
235 mutex_unlock(&mcp->lock); in mcp_pinconf_get()
241 return -ENOTSUPP; in mcp_pinconf_get()
246 return status ? 0 : -EINVAL; in mcp_pinconf_get()
264 mutex_lock(&mcp->lock); in mcp_pinconf_set()
266 mutex_unlock(&mcp->lock); in mcp_pinconf_set()
269 dev_dbg(mcp->dev, "Invalid config param %04x\n", param); in mcp_pinconf_set()
270 return -ENOTSUPP; in mcp_pinconf_set()
283 /*----------------------------------------------------------------------*/
290 mutex_lock(&mcp->lock); in mcp23s08_direction_input()
292 mutex_unlock(&mcp->lock); in mcp23s08_direction_input()
302 mutex_lock(&mcp->lock); in mcp23s08_get()
304 /* REVISIT reading this clears any IRQ ... */ in mcp23s08_get()
309 mcp->cached_gpio = status; in mcp23s08_get()
313 mutex_unlock(&mcp->lock); in mcp23s08_get()
324 mutex_lock(&mcp->lock); in mcp23s08_get_multiple()
326 /* REVISIT reading this clears any IRQ ... */ in mcp23s08_get_multiple()
331 mcp->cached_gpio = status; in mcp23s08_get_multiple()
335 mutex_unlock(&mcp->lock); in mcp23s08_get_multiple()
349 mutex_lock(&mcp->lock); in mcp23s08_set()
351 mutex_unlock(&mcp->lock); in mcp23s08_set()
359 mutex_lock(&mcp->lock); in mcp23s08_set_multiple()
361 mutex_unlock(&mcp->lock); in mcp23s08_set_multiple()
371 mutex_lock(&mcp->lock); in mcp23s08_direction_output()
376 mutex_unlock(&mcp->lock); in mcp23s08_direction_output()
380 /*----------------------------------------------------------------------*/
381 static irqreturn_t mcp23s08_irq(int irq, void *data) in mcp23s08_irq() argument
390 mutex_lock(&mcp->lock); in mcp23s08_irq()
415 gpio_orig = mcp->cached_gpio; in mcp23s08_irq()
416 mcp->cached_gpio = gpio; in mcp23s08_irq()
417 mutex_unlock(&mcp->lock); in mcp23s08_irq()
419 dev_dbg(mcp->chip.parent, in mcp23s08_irq()
424 for_each_set_bit(i, &enabled_interrupts, mcp->chip.ngpio) { in mcp23s08_irq()
432 * not written to at the same time - only on a per-bank in mcp23s08_irq()
436 * interrupt per-bank. On the mcp23s17, there is in mcp23s08_irq()
464 (BIT(i) & mcp->irq_rise) && gpio_set) || in mcp23s08_irq()
466 (BIT(i) & mcp->irq_fall) && !gpio_set) || in mcp23s08_irq()
468 child_irq = irq_find_mapping(mcp->chip.irq.domain, i); in mcp23s08_irq()
476 mutex_unlock(&mcp->lock); in mcp23s08_irq()
508 mcp->irq_rise |= BIT(pos); in mcp23s08_irq_set_type()
509 mcp->irq_fall |= BIT(pos); in mcp23s08_irq_set_type()
512 mcp->irq_rise |= BIT(pos); in mcp23s08_irq_set_type()
513 mcp->irq_fall &= ~BIT(pos); in mcp23s08_irq_set_type()
516 mcp->irq_rise &= ~BIT(pos); in mcp23s08_irq_set_type()
517 mcp->irq_fall |= BIT(pos); in mcp23s08_irq_set_type()
525 return -EINVAL; in mcp23s08_irq_set_type()
535 mutex_lock(&mcp->lock); in mcp23s08_irq_bus_lock()
536 regcache_cache_only(mcp->regmap, true); in mcp23s08_irq_bus_lock()
544 regcache_cache_only(mcp->regmap, false); in mcp23s08_irq_bus_unlock()
545 regcache_sync(mcp->regmap); in mcp23s08_irq_bus_unlock()
547 mutex_unlock(&mcp->lock); in mcp23s08_irq_bus_unlock()
552 struct gpio_chip *chip = &mcp->chip; in mcp23s08_irq_setup()
556 if (mcp->irq_active_high) in mcp23s08_irq_setup()
561 err = devm_request_threaded_irq(chip->parent, mcp->irq, NULL, in mcp23s08_irq_setup()
563 irqflags, dev_name(chip->parent), mcp); in mcp23s08_irq_setup()
565 dev_err(chip->parent, "unable to request IRQ#%d: %d\n", in mcp23s08_irq_setup()
566 mcp->irq, err); in mcp23s08_irq_setup()
578 seq_puts(p, dev_name(mcp->dev)); in mcp23s08_irq_print_chip()
592 /*----------------------------------------------------------------------*/
598 bool mirror = false; in mcp23s08_probe_one() local
601 mutex_init(&mcp->lock); in mcp23s08_probe_one()
603 mcp->dev = dev; in mcp23s08_probe_one()
604 mcp->addr = addr; in mcp23s08_probe_one()
606 mcp->irq_active_high = false; in mcp23s08_probe_one()
608 mcp->chip.direction_input = mcp23s08_direction_input; in mcp23s08_probe_one()
609 mcp->chip.get = mcp23s08_get; in mcp23s08_probe_one()
610 mcp->chip.get_multiple = mcp23s08_get_multiple; in mcp23s08_probe_one()
611 mcp->chip.direction_output = mcp23s08_direction_output; in mcp23s08_probe_one()
612 mcp->chip.set = mcp23s08_set; in mcp23s08_probe_one()
613 mcp->chip.set_multiple = mcp23s08_set_multiple; in mcp23s08_probe_one()
615 mcp->chip.base = base; in mcp23s08_probe_one()
616 mcp->chip.can_sleep = true; in mcp23s08_probe_one()
617 mcp->chip.parent = dev; in mcp23s08_probe_one()
618 mcp->chip.owner = THIS_MODULE; in mcp23s08_probe_one()
620 mcp->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); in mcp23s08_probe_one()
630 mcp->irq_controller = in mcp23s08_probe_one()
631 device_property_read_bool(dev, "interrupt-controller"); in mcp23s08_probe_one()
632 if (mcp->irq && mcp->irq_controller) { in mcp23s08_probe_one()
633 mcp->irq_active_high = in mcp23s08_probe_one()
635 "microchip,irq-active-high"); in mcp23s08_probe_one()
637 mirror = device_property_read_bool(dev, "microchip,irq-mirror"); in mcp23s08_probe_one()
638 open_drain = device_property_read_bool(dev, "drive-open-drain"); in mcp23s08_probe_one()
641 if ((status & IOCON_SEQOP) || !(status & IOCON_HAEN) || mirror || in mcp23s08_probe_one()
642 mcp->irq_active_high || open_drain) { in mcp23s08_probe_one()
646 if (mcp->irq_active_high) in mcp23s08_probe_one()
651 if (mirror) in mcp23s08_probe_one()
665 if (mcp->irq && mcp->irq_controller) { in mcp23s08_probe_one()
666 struct gpio_irq_chip *girq = &mcp->chip.irq; in mcp23s08_probe_one()
669 /* This will let us handle the parent IRQ in the driver */ in mcp23s08_probe_one()
670 girq->parent_handler = NULL; in mcp23s08_probe_one()
671 girq->num_parents = 0; in mcp23s08_probe_one()
672 girq->parents = NULL; in mcp23s08_probe_one()
673 girq->default_type = IRQ_TYPE_NONE; in mcp23s08_probe_one()
674 girq->handler = handle_simple_irq; in mcp23s08_probe_one()
675 girq->threaded = true; in mcp23s08_probe_one()
678 ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp); in mcp23s08_probe_one()
682 mcp->pinctrl_desc.pctlops = &mcp_pinctrl_ops; in mcp23s08_probe_one()
683 mcp->pinctrl_desc.confops = &mcp_pinconf_ops; in mcp23s08_probe_one()
684 mcp->pinctrl_desc.npins = mcp->chip.ngpio; in mcp23s08_probe_one()
685 if (mcp->pinctrl_desc.npins == 8) in mcp23s08_probe_one()
686 mcp->pinctrl_desc.pins = mcp23x08_pins; in mcp23s08_probe_one()
687 else if (mcp->pinctrl_desc.npins == 16) in mcp23s08_probe_one()
688 mcp->pinctrl_desc.pins = mcp23x17_pins; in mcp23s08_probe_one()
689 mcp->pinctrl_desc.owner = THIS_MODULE; in mcp23s08_probe_one()
691 mcp->pctldev = devm_pinctrl_register(dev, &mcp->pinctrl_desc, mcp); in mcp23s08_probe_one()
692 if (IS_ERR(mcp->pctldev)) in mcp23s08_probe_one()
693 return dev_err_probe(dev, PTR_ERR(mcp->pctldev), "can't register controller\n"); in mcp23s08_probe_one()
695 if (mcp->irq) { in mcp23s08_probe_one()
698 return dev_err_probe(dev, ret, "can't setup IRQ\n"); in mcp23s08_probe_one()