drivers/pinctrl/pinctrl-aw9523.c

176 	struct aw9523 *awi = pinctrl_dev_get_drvdata(pctl);
186 	mutex_lock(&awi->i2c_lock);
187 	ret = regmap_update_bits(awi->regmap, AW9523_REG_PORT_MODE(pin),
189 	mutex_unlock(&awi->i2c_lock);
232 	struct aw9523 *awi = pinctrl_dev_get_drvdata(pctldev);
243 	mutex_lock(&awi->i2c_lock);
244 	rc = regmap_read(awi->regmap, reg, &val);
245 	mutex_unlock(&awi->i2c_lock);
286 	struct aw9523 *awi = pinctrl_dev_get_drvdata(pctldev);
294 	mutex_lock(&awi->i2c_lock);
306 			rc = regmap_update_bits(awi->regmap,
348 		rc = regmap_update_bits(awi->regmap, reg, mask, val);
353 	mutex_unlock(&awi->i2c_lock);
429 	struct aw9523 *awi = gpiochip_get_data(irq_data_get_irq_chip_data(d));
433 	regmap_update_bits(awi->regmap, AW9523_REG_INTR_DIS(hwirq),
435 	gpiochip_disable_irq(&awi->gpio, hwirq);
447 	struct aw9523 *awi = gpiochip_get_data(irq_data_get_irq_chip_data(d));
451 	gpiochip_enable_irq(&awi->gpio, hwirq);
452 	regmap_update_bits(awi->regmap, AW9523_REG_INTR_DIS(hwirq),
458 	struct aw9523 *awi = (struct aw9523 *)dev_id;
465 		ret = regmap_read(awi->regmap,
474 	changed_gpio = awi->irq->cached_gpio ^ val;
475 	awi->irq->cached_gpio = val;
483 	for_each_set_bit(n, &changed_gpio, awi->gpio.ngpio) {
484 		tmp = irq_find_mapping(awi->gpio.irq.domain, n);
499 	struct aw9523 *awi = gpiochip_get_data(irq_data_get_irq_chip_data(d));
501 	mutex_lock(&awi->irq->lock);
502 	regcache_cache_only(awi->regmap, true);
514 	struct aw9523 *awi = gpiochip_get_data(irq_data_get_irq_chip_data(d));
516 	regcache_cache_only(awi->regmap, false);
517 	regcache_sync(awi->regmap);
518 	mutex_unlock(&awi->irq->lock);
524 	struct aw9523 *awi = gpiochip_get_data(chip);
528 	mutex_lock(&awi->i2c_lock);
529 	ret = aw9523_get_pin_direction(awi->regmap, offset, regbit);
530 	mutex_unlock(&awi->i2c_lock);
537 	struct aw9523 *awi = gpiochip_get_data(chip);
542 	mutex_lock(&awi->i2c_lock);
543 	ret = aw9523_get_port_state(awi->regmap, offset, regbit, &val);
544 	mutex_unlock(&awi->i2c_lock);
560 static int _aw9523_gpio_get_multiple(struct aw9523 *awi, u8 regbit,
568 	ret = regmap_read(awi->regmap, AW9523_REG_CONF_STATE(regbit), &dir_in);
575 		ret = regmap_read(awi->regmap, AW9523_REG_IN_STATE(regbit),
584 		ret = regmap_read(awi->regmap, AW9523_REG_OUT_STATE(regbit),
598 	struct aw9523 *awi = gpiochip_get_data(chip);
602 	mutex_lock(&awi->i2c_lock);
607 		ret = _aw9523_gpio_get_multiple(awi, 0, &state, m);
616 		ret = _aw9523_gpio_get_multiple(awi, AW9523_PINS_PER_PORT,
624 	mutex_unlock(&awi->i2c_lock);
632 	struct aw9523 *awi = gpiochip_get_data(chip);
642 	mutex_lock(&awi->i2c_lock);
645 		ret = regmap_write_bits(awi->regmap, reg, mask_hi, bits_hi);
647 			dev_warn(awi->dev, "Cannot write port1 out level\n");
651 		ret = regmap_write_bits(awi->regmap, reg, mask_lo, bits_lo);
653 			dev_warn(awi->dev, "Cannot write port0 out level\n");
655 	mutex_unlock(&awi->i2c_lock);
661 	struct aw9523 *awi = gpiochip_get_data(chip);
664 	mutex_lock(&awi->i2c_lock);
665 	regmap_update_bits(awi->regmap, AW9523_REG_OUT_STATE(offset),
667 	mutex_unlock(&awi->i2c_lock);
673 	struct aw9523 *awi = gpiochip_get_data(chip);
677 	mutex_lock(&awi->i2c_lock);
678 	ret = regmap_update_bits(awi->regmap, AW9523_REG_CONF_STATE(offset),
680 	mutex_unlock(&awi->i2c_lock);
688 	struct aw9523 *awi = gpiochip_get_data(chip);
692 	mutex_lock(&awi->i2c_lock);
693 	ret = regmap_update_bits(awi->regmap, AW9523_REG_OUT_STATE(offset),
698 	ret = regmap_update_bits(awi->regmap, AW9523_REG_CONF_STATE(offset),
701 	mutex_unlock(&awi->i2c_lock);
705 static int aw9523_drive_reset_gpio(struct aw9523 *awi)
716 	ret = regmap_write(awi->regmap, AW9523_REG_SOFT_RESET, 0);
720 	dev_dbg(awi->dev, "Cannot execute soft reset: trying hard reset\n");
721 	ret = gpiod_direction_output(awi->reset_gpio, 0);
728 	ret = gpiod_direction_output(awi->reset_gpio, 1);
737 	ret = regmap_read(awi->regmap, AW9523_REG_CHIPID, &chip_id);
739 		dev_err(awi->dev, "Cannot read Chip ID: %d\n", ret);
743 		dev_err(awi->dev, "Bad ChipID; read 0x%x, expected 0x%x\n",
751 static int aw9523_hw_reset(struct aw9523 *awi)
757 		ret = aw9523_drive_reset_gpio(awi);
766 static int aw9523_init_gpiochip(struct aw9523 *awi, unsigned int npins)
768 	struct device *dev = awi->dev;
769 	struct gpio_chip *gc = &awi->gpio;
803 static int aw9523_init_irq(struct aw9523 *awi, int irq)
805 	struct device *dev = awi->dev;
812 	awi->irq = devm_kzalloc(dev, sizeof(*awi->irq), GFP_KERNEL);
813 	if (!awi->irq)
816 	mutex_init(&awi->irq->lock);
819 					IRQF_ONESHOT, dev_name(dev), awi);
823 	girq = &awi->gpio.irq;
887 static int aw9523_hw_init(struct aw9523 *awi)
894 	regcache_cache_bypass(awi->regmap, true);
897 	ret = aw9523_hw_reset(awi);
899 		dev_err(awi->dev, "HW Reset failed: %d\n", ret);
911 	ret = regmap_write(awi->regmap, AW9523_REG_PORT_MODE(0), U8_MAX);
914 	ret = regmap_write(awi->regmap, AW9523_REG_PORT_MODE(p1_pin), U8_MAX);
919 	ret = regmap_write(awi->regmap, AW9523_REG_GCR, 0);
924 	ret = regmap_write(awi->regmap, AW9523_REG_CONF_STATE(0), U8_MAX);
927 	ret = regmap_write(awi->regmap, AW9523_REG_CONF_STATE(p1_pin), U8_MAX);
932 	ret = regmap_write(awi->regmap, AW9523_REG_INTR_DIS(0), U8_MAX);
935 	ret = regmap_write(awi->regmap, AW9523_REG_INTR_DIS(p1_pin), U8_MAX);
940 	ret = aw9523_get_port_state(awi->regmap, 0, 0, &val);
943 	ret = aw9523_get_port_state(awi->regmap, p1_pin, 0, &val);
948 	regcache_cache_bypass(awi->regmap, false);
949 	return regmap_reinit_cache(awi->regmap, &aw9523_regmap);
956 	struct aw9523 *awi;
959 	awi = devm_kzalloc(dev, sizeof(*awi), GFP_KERNEL);
960 	if (!awi)
963 	i2c_set_clientdata(client, awi);
965 	awi->dev = dev;
966 	awi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
967 	if (IS_ERR(awi->reset_gpio))
968 		return PTR_ERR(awi->reset_gpio);
969 	gpiod_set_consumer_name(awi->reset_gpio, "aw9523 reset");
971 	awi->regmap = devm_regmap_init_i2c(client, &aw9523_regmap);
972 	if (IS_ERR(awi->regmap))
973 		return PTR_ERR(awi->regmap);
975 	awi->vio_vreg = devm_regulator_get_optional(dev, "vio");
976 	if (IS_ERR(awi->vio_vreg)) {
977 		if (PTR_ERR(awi->vio_vreg) == -EPROBE_DEFER)
979 		awi->vio_vreg = NULL;
981 		ret = regulator_enable(awi->vio_vreg);
986 	mutex_init(&awi->i2c_lock);
987 	lockdep_set_subclass(&awi->i2c_lock, i2c_adapter_depth(client->adapter));
993 	ret = aw9523_hw_init(awi);
1005 	ret = aw9523_init_gpiochip(awi, pdesc->npins);
1010 		ret = aw9523_init_irq(awi, client->irq);
1015 	awi->pctl = devm_pinctrl_register(dev, pdesc, awi);
1016 	if (IS_ERR(awi->pctl)) {
1017 		ret = dev_err_probe(dev, PTR_ERR(awi->pctl), "Cannot register pinctrl");
1021 	ret = devm_gpiochip_add_data(dev, &awi->gpio, awi);
1028 	if (awi->vio_vreg)
1029 		regulator_disable(awi->vio_vreg);
1030 	mutex_destroy(&awi->i2c_lock);
1036 	struct aw9523 *awi = i2c_get_clientdata(client);
1044 	if (awi->vio_vreg) {
1045 		regulator_disable(awi->vio_vreg);
1047 		mutex_lock(&awi->i2c_lock);
1048 		aw9523_hw_init(awi);
1049 		mutex_unlock(&awi->i2c_lock);
1052 	mutex_destroy(&awi->i2c_lock);