static int cpcap_rtc_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct cpcap_rtc *rtc;
	int err;

	rtc = devm_kzalloc(dev, sizeof(*rtc), GFP_KERNEL);
	if (!rtc)
		return -ENOMEM;

	rtc->regmap = dev_get_regmap(dev->parent, NULL);
	if (!rtc->regmap)
		return -ENODEV;

	platform_set_drvdata(pdev, rtc);
	rtc->rtc_dev = devm_rtc_device_register(dev, "cpcap_rtc",
						&cpcap_rtc_ops, THIS_MODULE);

	if (IS_ERR(rtc->rtc_dev))
		return PTR_ERR(rtc->rtc_dev);

	err = cpcap_get_vendor(dev, rtc->regmap, &rtc->vendor);
	if (err)
		return err;

	rtc->alarm_irq = platform_get_irq(pdev, 0);
	err = devm_request_threaded_irq(dev, rtc->alarm_irq, NULL,
					cpcap_rtc_alarm_irq, IRQF_TRIGGER_NONE,
					"rtc_alarm", rtc);
	if (err) {
		dev_err(dev, "Could not request alarm irq: %d\n", err);
		return err;
	}
	disable_irq(rtc->alarm_irq);

	/* Stock Android uses the 1 Hz interrupt for "secure clock daemon",
	 * which is not supported by the mainline kernel. The mainline kernel
	 * does not use the irq at the moment, but we explicitly request and
	 * disable it, so that its masked and does not wake up the processor
	 * every second.
	 */
	rtc->update_irq = platform_get_irq(pdev, 1);
	err = devm_request_threaded_irq(dev, rtc->update_irq, NULL,
					cpcap_rtc_update_irq, IRQF_TRIGGER_NONE,
					"rtc_1hz", rtc);
	if (err) {
		dev_err(dev, "Could not request update irq: %d\n", err);
		return err;
	}
	disable_irq(rtc->update_irq);

	err = device_init_wakeup(dev, 1);
	if (err) {
		dev_err(dev, "wakeup initialization failed (%d)\n", err);
		/* ignore error and continue without wakeup support */
	}

	return 0;
}

static int __devinit pm805_codec_probe(struct platform_device *pdev)
{
	struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
	struct pm805_priv *pm805;
	int ret, irq_short1, irq_short2;

	pm805 = devm_kzalloc(&pdev->dev, sizeof(struct pm805_priv), GFP_KERNEL);
	if (pm805 == NULL)
		return -ENOMEM;

	pm805->chip = chip;
	pm805->regmap = chip->regmap;

	/* refer to drivers/mfd/88pm805.c for irq resource */
	irq_short1 = platform_get_irq(pdev, 1);
	if (irq_short1 < 0)
		dev_err(&pdev->dev, "No IRQ resource for audio short 1!\n");

	irq_short2 = platform_get_irq(pdev, 2);
	if (irq_short2 < 0)
		dev_err(&pdev->dev, "No IRQ resource for audio short 2!\n");

	pm805->irq_audio_short1 = irq_short1 + chip->irq_base;
	pm805->irq_audio_short2 = irq_short2 + chip->irq_base;

	INIT_WORK(&pm805->work_short, pm805_short_work);

	ret =
	    devm_request_threaded_irq(&pdev->dev, pm805->irq_audio_short1, NULL,
				      pm805_short_handler, IRQF_ONESHOT,
				      "audio_short1", pm805);
	if (ret < 0)
		dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n",
			pm805->irq_audio_short1, ret);

	ret =
	    devm_request_threaded_irq(&pdev->dev, pm805->irq_audio_short2, NULL,
				      pm805_short_handler, IRQF_ONESHOT,
				      "audio_short2", pm805);
	if (ret < 0)
		dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n",
			pm805->irq_audio_short2, ret);

	platform_set_drvdata(pdev, pm805);

	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pm805,
				     pm805_dai, ARRAY_SIZE(pm805_dai));
}

static int max3355_probe(struct platform_device *pdev)
{
	struct max3355_data *data;
	struct gpio_desc *gpiod;
	int irq, err;

	data = devm_kzalloc(&pdev->dev, sizeof(struct max3355_data),
			    GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	gpiod = devm_gpiod_get(&pdev->dev, "id", GPIOD_IN);
	if (IS_ERR(gpiod)) {
		dev_err(&pdev->dev, "failed to get ID_OUT GPIO\n");
		return PTR_ERR(gpiod);
	}
	data->id_gpiod = gpiod;

	gpiod = devm_gpiod_get(&pdev->dev, "maxim,shdn", GPIOD_OUT_HIGH);
	if (IS_ERR(gpiod)) {
		dev_err(&pdev->dev, "failed to get SHDN# GPIO\n");
		return PTR_ERR(gpiod);
	}
	data->shdn_gpiod = gpiod;

	data->edev = devm_extcon_dev_allocate(&pdev->dev, max3355_cable);
	if (IS_ERR(data->edev)) {
		dev_err(&pdev->dev, "failed to allocate extcon device\n");
		return PTR_ERR(data->edev);
	}

	err = devm_extcon_dev_register(&pdev->dev, data->edev);
	if (err < 0) {
		dev_err(&pdev->dev, "failed to register extcon device\n");
		return err;
	}

	irq = gpiod_to_irq(data->id_gpiod);
	if (irq < 0) {
		dev_err(&pdev->dev, "failed to translate ID_OUT GPIO to IRQ\n");
		return irq;
	}

	err = devm_request_threaded_irq(&pdev->dev, irq, NULL, max3355_id_irq,
					IRQF_ONESHOT | IRQF_NO_SUSPEND |
					IRQF_TRIGGER_RISING |
					IRQF_TRIGGER_FALLING,
					pdev->name, data);
	if (err < 0) {
		dev_err(&pdev->dev, "failed to request ID_OUT IRQ\n");
		return err;
	}

	platform_set_drvdata(pdev, data);

	/* Perform initial detection */
	max3355_id_irq(irq, data);

	return 0;
}

/**
 * phy_mdm6600_init_irq() - initialize mdm6600 status IRQ lines
 * @ddata: device driver data
 */
static void phy_mdm6600_init_irq(struct phy_mdm6600 *ddata)
{
	struct device *dev = ddata->dev;
	int i, error, irq;

	for (i = PHY_MDM6600_STATUS0;
	     i <= PHY_MDM6600_STATUS2; i++) {
		struct gpio_desc *gpio = ddata->status_gpios->desc[i];

		irq = gpiod_to_irq(gpio);
		if (irq <= 0)
			continue;

		error = devm_request_threaded_irq(dev, irq, NULL,
					phy_mdm6600_irq_thread,
					IRQF_TRIGGER_RISING |
					IRQF_TRIGGER_FALLING |
					IRQF_ONESHOT,
					"mdm6600",
					ddata);
		if (error)
			dev_warn(dev, "no modem status irq%i: %i\n",
				 irq, error);
	}
}

void mmc_gpiod_request_cd_irq(struct mmc_host *host)
{
	struct mmc_gpio *ctx = host->slot.handler_priv;
	int ret, irq;

	if (host->slot.cd_irq >= 0 || !ctx || !ctx->cd_gpio)
		return;

	irq = gpiod_to_irq(ctx->cd_gpio);

	/*
	 * Even if gpiod_to_irq() returns a valid IRQ number, the platform might
	 * still prefer to poll, e.g., because that IRQ number is already used
	 * by another unit and cannot be shared.
	 */
	if (irq >= 0 && host->caps & MMC_CAP_NEEDS_POLL)
		irq = -EINVAL;

	if (irq >= 0) {
		ret = devm_request_threaded_irq(&host->class_dev, irq,
			NULL, mmc_gpio_cd_irqt,
			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
			ctx->cd_label, host);
		if (ret < 0)
			irq = ret;
	}

	host->slot.cd_irq = irq;

	if (irq < 0)
		host->caps |= MMC_CAP_NEEDS_POLL;
}

static int st21nfcb_nci_i2c_probe(struct i2c_client *client,
				  const struct i2c_device_id *id)
{
	struct st21nfcb_i2c_phy *phy;
	struct st21nfcb_nfc_platform_data *pdata;
	int r;

	dev_dbg(&client->dev, "%s\n", __func__);
	dev_dbg(&client->dev, "IRQ: %d\n", client->irq);

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		nfc_err(&client->dev, "Need I2C_FUNC_I2C\n");
		return -ENODEV;
	}

	phy = devm_kzalloc(&client->dev, sizeof(struct st21nfcb_i2c_phy),
			   GFP_KERNEL);
	if (!phy) {
		nfc_err(&client->dev,
			"Cannot allocate memory for st21nfcb i2c phy.\n");
		return -ENOMEM;
	}

	phy->i2c_dev = client;

	i2c_set_clientdata(client, phy);

	pdata = client->dev.platform_data;
	if (!pdata && client->dev.of_node) {
		r = st21nfcb_nci_i2c_of_request_resources(client);
		if (r) {
			nfc_err(&client->dev, "No platform data\n");
			return r;
		}
	} else if (pdata) {
		r = st21nfcb_nci_i2c_request_resources(client);
		if (r) {
			nfc_err(&client->dev,
				"Cannot get platform resources\n");
			return r;
		}
	} else {
		nfc_err(&client->dev,
			"st21nfcb platform resources not available\n");
		return -ENODEV;
	}

	r = devm_request_threaded_irq(&client->dev, client->irq, NULL,
				st21nfcb_nci_irq_thread_fn,
				phy->irq_polarity | IRQF_ONESHOT,
				ST21NFCB_NCI_DRIVER_NAME, phy);
	if (r < 0) {
		nfc_err(&client->dev, "Unable to register IRQ handler\n");
		return r;
	}

	return ndlc_probe(phy, &i2c_phy_ops, &client->dev,
			ST21NFCB_FRAME_HEADROOM, ST21NFCB_FRAME_TAILROOM,
			&phy->ndlc);
}

static int retu_pwrbutton_probe(struct platform_device *pdev)
{
	struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent);
	struct input_dev *idev;
	int irq;
	int error;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;

	idev = devm_input_allocate_device(&pdev->dev);
	if (!idev)
		return -ENOMEM;

	idev->name = "retu-pwrbutton";
	idev->dev.parent = &pdev->dev;

	input_set_capability(idev, EV_KEY, KEY_POWER);
	input_set_drvdata(idev, rdev);

	error = devm_request_threaded_irq(&pdev->dev, irq,
					  NULL, retu_pwrbutton_irq, 0,
					  "retu-pwrbutton", idev);
	if (error)
		return error;

	error = input_register_device(idev);
	if (error)
		return error;

	return 0;
}

static int da9052_rtc_probe(struct platform_device *pdev)
{
	struct da9052_rtc *rtc;
	int ret;

	rtc = devm_kzalloc(&pdev->dev, sizeof(struct da9052_rtc), GFP_KERNEL);
	if (!rtc)
		return -ENOMEM;

	rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
	platform_set_drvdata(pdev, rtc);
	rtc->irq = platform_get_irq_byname(pdev, "ALM");
	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
				da9052_rtc_irq,
				IRQF_TRIGGER_LOW | IRQF_ONESHOT,
				"ALM", rtc);
	if (ret != 0) {
		rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);
		return ret;
	}

	rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
				       &da9052_rtc_ops, THIS_MODULE);
	if (IS_ERR(rtc->rtc))
		return PTR_ERR(rtc->rtc);

	return 0;
}

static int ds3232_probe(struct device *dev, struct regmap *regmap, int irq,
			const char *name)
{
	struct ds3232 *ds3232;
	int ret;

	ds3232 = devm_kzalloc(dev, sizeof(*ds3232), GFP_KERNEL);
	if (!ds3232)
		return -ENOMEM;

	ds3232->regmap = regmap;
	ds3232->irq = irq;
	ds3232->dev = dev;
	dev_set_drvdata(dev, ds3232);

	ret = ds3232_check_rtc_status(dev);
	if (ret)
		return ret;

	if (ds3232->irq > 0) {
		ret = devm_request_threaded_irq(dev, ds3232->irq, NULL,
						ds3232_irq,
						IRQF_SHARED | IRQF_ONESHOT,
						name, dev);
		if (ret) {
			ds3232->irq = 0;
			dev_err(dev, "unable to request IRQ\n");
		} else
			device_init_wakeup(dev, 1);
	}
	ds3232->rtc = devm_rtc_device_register(dev, name, &ds3232_rtc_ops,
						THIS_MODULE);

	return PTR_ERR_OR_ZERO(ds3232->rtc);
}

static int chtdc_ti_pwrbtn_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent);
	struct input_dev *input;
	int irq, err;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;
	input = devm_input_allocate_device(dev);
	if (!input)
		return -ENOMEM;
	input->name = pdev->name;
	input->phys = "power-button/input0";
	input->id.bustype = BUS_HOST;
	input_set_capability(input, EV_KEY, KEY_POWER);
	err = input_register_device(input);
	if (err)
		return err;

	dev_set_drvdata(dev, pmic->regmap);

	err = devm_request_threaded_irq(dev, irq, NULL,
					chtdc_ti_pwrbtn_interrupt,
					0, KBUILD_MODNAME, input);
	if (err)
		return err;

	device_init_wakeup(dev, true);
	dev_pm_set_wake_irq(dev, irq);
	return 0;
}

void mmc_gpiod_request_cd_irq(struct mmc_host *host)
{
	struct mmc_gpio *ctx = host->slot.handler_priv;
	int irq = -EINVAL;
	int ret;

	if (host->slot.cd_irq >= 0 || !ctx || !ctx->cd_gpio)
		return;

	/*
	 * Do not use IRQ if the platform prefers to poll, e.g., because that
	 * IRQ number is already used by another unit and cannot be shared.
	 */
	if (!(host->caps & MMC_CAP_NEEDS_POLL))
		irq = gpiod_to_irq(ctx->cd_gpio);

	if (irq >= 0) {
		if (!ctx->cd_gpio_isr)
			ctx->cd_gpio_isr = mmc_gpio_cd_irqt;
		ret = devm_request_threaded_irq(host->parent, irq,
			NULL, ctx->cd_gpio_isr,
			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
			ctx->cd_label, host);
		if (ret < 0)
			irq = ret;
	}

	host->slot.cd_irq = irq;

	if (irq < 0)
		host->caps |= MMC_CAP_NEEDS_POLL;
}

static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
{
	int error;
	struct fsl_mc_device_irq *irq = mc_dev->irqs[0];

	WARN_ON(mc_dev->obj_desc.irq_count != 1);

	/*
	 * NOTE: devm_request_threaded_irq() invokes the device-specific
	 * function that programs the MSI physically in the device
	 */
	error = devm_request_threaded_irq(&mc_dev->dev,
					  irq->msi_desc->irq,
					  dprc_irq0_handler,
					  dprc_irq0_handler_thread,
					  IRQF_NO_SUSPEND | IRQF_ONESHOT,
					  "FSL MC DPRC irq0",
					  &mc_dev->dev);
	if (error < 0) {
		dev_err(&mc_dev->dev,
			"devm_request_threaded_irq() failed: %d\n",
			error);
		return error;
	}

	return 0;
}

int wcd9xxx_spmi_request_irq(int irq, irq_handler_t handler,
			const char *name, void *priv)
{
	int rc;
	map.linuxirq[irq] =
		spmi_get_irq_byname(map.spmi[BIT_BYTE(irq)], NULL,
				    irq_names[irq]);
	rc = devm_request_threaded_irq(&map.spmi[BIT_BYTE(irq)]->dev,
				map.linuxirq[irq], NULL,
				wcd9xxx_spmi_irq_handler,
				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
				| IRQF_ONESHOT,
				name, priv);
		if (rc < 0) {
			dev_err(&map.spmi[BIT_BYTE(irq)]->dev,
				"Can't request %d IRQ\n", irq);
			return rc;
		}

	dev_dbg(&map.spmi[BIT_BYTE(irq)]->dev,
			"irq %d linuxIRQ: %d\n", irq, map.linuxirq[irq]);
	map.mask[BIT_BYTE(irq)] &= ~BYTE_BIT_MASK(irq);
	map.handler[irq] = handler;
	enable_irq_wake(map.linuxirq[irq]);
	return 0;
}

int mc13xxx_irq_request(struct mc13xxx *mc13xxx, int irq,
		irq_handler_t handler, const char *name, void *dev)
{
	int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq);

	return devm_request_threaded_irq(mc13xxx->dev, virq, NULL, handler,
					 IRQF_ONESHOT, name, dev);
}

static int st_nci_spi_probe(struct spi_device *dev)
{
	struct st_nci_spi_phy *phy;
	int r;

	dev_dbg(&dev->dev, "%s\n", __func__);
	dev_dbg(&dev->dev, "IRQ: %d\n", dev->irq);

	/* Check SPI platform functionnalities */
	if (!dev) {
		pr_debug("%s: dev is NULL. Device is not accessible.\n",
			__func__);
		return -ENODEV;
	}

	phy = devm_kzalloc(&dev->dev, sizeof(struct st_nci_spi_phy),
			   GFP_KERNEL);
	if (!phy)
		return -ENOMEM;

	phy->spi_dev = dev;

	spi_set_drvdata(dev, phy);

	r = devm_acpi_dev_add_driver_gpios(&dev->dev, acpi_st_nci_gpios);
	if (r)
		dev_dbg(&dev->dev, "Unable to add GPIO mapping table\n");

	/* Get RESET GPIO */
	phy->gpiod_reset = devm_gpiod_get(&dev->dev, "reset", GPIOD_OUT_HIGH);
	if (IS_ERR(phy->gpiod_reset)) {
		nfc_err(&dev->dev, "Unable to get RESET GPIO\n");
		return PTR_ERR(phy->gpiod_reset);
	}

	phy->se_status.is_ese_present =
			device_property_read_bool(&dev->dev, "ese-present");
	phy->se_status.is_uicc_present =
			device_property_read_bool(&dev->dev, "uicc-present");

	r = ndlc_probe(phy, &spi_phy_ops, &dev->dev,
			ST_NCI_FRAME_HEADROOM, ST_NCI_FRAME_TAILROOM,
			&phy->ndlc, &phy->se_status);
	if (r < 0) {
		nfc_err(&dev->dev, "Unable to register ndlc layer\n");
		return r;
	}

	phy->irq_active = true;
	r = devm_request_threaded_irq(&dev->dev, dev->irq, NULL,
				st_nci_irq_thread_fn,
				IRQF_ONESHOT,
				ST_NCI_SPI_DRIVER_NAME, phy);
	if (r < 0)
		nfc_err(&dev->dev, "Unable to register IRQ handler\n");

	return r;
}

/* configuration api for buffer mode */
static int qpnp_hap_buffer_config(struct qpnp_hap *hap)
{
	u8 reg = 0;
	int rc, i, temp;

	/* Configure the WAVE_REPEAT register */
	if (hap->wave_rep_cnt < QPNP_HAP_WAV_REP_MIN)
		hap->wave_rep_cnt = QPNP_HAP_WAV_REP_MIN;
	else if (hap->wave_rep_cnt > QPNP_HAP_WAV_REP_MAX)
		hap->wave_rep_cnt = QPNP_HAP_WAV_REP_MAX;

	if (hap->wave_s_rep_cnt < QPNP_HAP_WAV_S_REP_MIN)
		hap->wave_s_rep_cnt = QPNP_HAP_WAV_S_REP_MIN;
	else if (hap->wave_s_rep_cnt > QPNP_HAP_WAV_S_REP_MAX)
		hap->wave_s_rep_cnt = QPNP_HAP_WAV_S_REP_MAX;

	rc = qpnp_hap_read_reg(hap, &reg,
			QPNP_HAP_WAV_REP_REG(hap->base));
	if (rc < 0)
		return rc;
	reg &= QPNP_HAP_WAV_REP_MASK;
	temp = fls(hap->wave_rep_cnt) - 1;
	reg |= (temp << QPNP_HAP_WAV_REP_SHFT);
	reg &= QPNP_HAP_WAV_S_REP_MASK;
	temp = fls(hap->wave_s_rep_cnt) - 1;
	reg |= temp;
	rc = qpnp_hap_write_reg(hap, &reg,
			QPNP_HAP_WAV_REP_REG(hap->base));
	if (rc)
		return rc;

	/* Configure WAVE_SAMPLE1 to WAVE_SAMPLE8 register */
	for (i = 0, reg = 0; i < QPNP_HAP_WAV_SAMP_LEN; i++) {
		reg = hap->wave_samp[i];
		rc = qpnp_hap_write_reg(hap, &reg,
			QPNP_HAP_WAV_S_REG_BASE(hap->base) + i);
		if (rc)
			return rc;
	}

	/* setup play irq */
	if (hap->use_play_irq) {
		rc = devm_request_threaded_irq(&hap->spmi->dev, hap->play_irq,
			NULL, qpnp_hap_play_irq,
			QPNP_IRQ_FLAGS,
			"qpnp_play_irq", hap);
		if (rc < 0) {
			dev_err(&hap->spmi->dev,
				"Unable to request play(%d) IRQ(err:%d)\n",
				hap->play_irq, rc);
			return rc;
		}
	}

	hap->buffer_cfg_state = true;
	return 0;
}

static int max8997_rtc_probe(struct platform_device *pdev)
{
	struct max8997_dev *max8997 = dev_get_drvdata(pdev->dev.parent);
	struct max8997_rtc_info *info;
	int ret, virq;

	info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_rtc_info),
			GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	mutex_init(&info->lock);
	info->dev = &pdev->dev;
	info->max8997 = max8997;
	info->rtc = max8997->rtc;

	platform_set_drvdata(pdev, info);

	ret = max8997_rtc_init_reg(info);

	if (ret < 0) {
		dev_err(&pdev->dev, "Failed to initialize RTC reg:%d\n", ret);
		return ret;
	}

	max8997_rtc_enable_wtsr(info, true);
	max8997_rtc_enable_smpl(info, true);

	device_init_wakeup(&pdev->dev, 1);

	info->rtc_dev = devm_rtc_device_register(&pdev->dev, "max8997-rtc",
					&max8997_rtc_ops, THIS_MODULE);

	if (IS_ERR(info->rtc_dev)) {
		ret = PTR_ERR(info->rtc_dev);
		dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
		return ret;
	}

	virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
	if (!virq) {
		dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
		ret = -ENXIO;
		goto err_out;
	}
	info->virq = virq;

	ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
				max8997_rtc_alarm_irq, 0,
				"rtc-alarm0", info);
	if (ret < 0)
		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
			info->virq, ret);

err_out:
	return ret;
}

/**
 * mmc_gpio_request_cd - request a gpio for card-detection
 * @host: mmc host
 * @gpio: gpio number requested
 *
 * As devm_* managed functions are used in mmc_gpio_request_cd(), client
 * drivers do not need to explicitly call mmc_gpio_free_cd() for freeing up,
 * if the requesting and freeing are only needed at probing and unbinding time
 * for once.  However, if client drivers do something special like runtime
 * switching for card-detection, they are responsible for calling
 * mmc_gpio_request_cd() and mmc_gpio_free_cd() as a pair on their own.
 *
 * Returns zero on success, else an error.
 */
int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio)
{
	struct mmc_gpio *ctx;
	int irq = gpio_to_irq(gpio);
	int ret;

	ret = mmc_gpio_alloc(host);
	if (ret < 0)
		return ret;

	ctx = host->slot.handler_priv;

	ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN,
				    ctx->cd_label);
	if (ret < 0)
		/*
		 * don't bother freeing memory. It might still get used by other
		 * slot functions, in any case it will be freed, when the device
		 * is destroyed.
		 */
		return ret;

	/*
	 * Even if gpio_to_irq() returns a valid IRQ number, the platform might
	 * still prefer to poll, e.g., because that IRQ number is already used
	 * by another unit and cannot be shared.
	 */
	if (irq >= 0 && host->caps & MMC_CAP_NEEDS_POLL)
		irq = -EINVAL;

	ctx->cd_gpio = gpio;
	host->slot.cd_irq = irq;

	ret = mmc_gpio_get_status(host);
	if (ret < 0)
		return ret;

	ctx->status = ret;
	if (irq >= 0) {
		ret = devm_request_threaded_irq(&host->class_dev, irq,
			NULL, mmc_gpio_cd_irqt,
			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
			ctx->cd_label, host);
		if (ret < 0)
			irq = ret;
#ifndef VENDOR_EDIT
//[email protected], 2014-07-10 Add for retry 5 times when new sdcard init error
    	enable_irq_wake(irq);
#endif /* VENDOR_EDIT */
	}

	if (irq < 0)
		host->caps |= MMC_CAP_NEEDS_POLL;

	return 0;
}

static int rc5t583_rtc_probe(struct platform_device *pdev)
{
	struct rc5t583 *rc5t583 = dev_get_drvdata(pdev->dev.parent);
	struct rc5t583_rtc *ricoh_rtc;
	struct rc5t583_platform_data *pmic_plat_data;
	int ret;
	int irq;

	ricoh_rtc = devm_kzalloc(&pdev->dev, sizeof(struct rc5t583_rtc),
			GFP_KERNEL);
	if (!ricoh_rtc)
		return -ENOMEM;

	platform_set_drvdata(pdev, ricoh_rtc);

	/* Clear pending interrupts */
	ret = regmap_write(rc5t583->regmap, RC5T583_RTC_CTL2, 0);
	if (ret < 0)
		return ret;

	/* clear RTC Adjust register */
	ret = regmap_write(rc5t583->regmap, RC5T583_RTC_ADJ, 0);
	if (ret < 0) {
		dev_err(&pdev->dev, "unable to program rtc_adjust reg\n");
		return -EBUSY;
	}

	pmic_plat_data = dev_get_platdata(rc5t583->dev);
	irq = pmic_plat_data->irq_base;
	if (irq <= 0) {
		dev_warn(&pdev->dev, "Wake up is not possible as irq = %d\n",
			irq);
		return ret;
	}

	irq += RC5T583_IRQ_YALE;
	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
		rc5t583_rtc_interrupt, IRQF_TRIGGER_LOW,
		"rtc-rc5t583", &pdev->dev);
	if (ret < 0) {
		dev_err(&pdev->dev, "IRQ is not free.\n");
		return ret;
	}
	device_init_wakeup(&pdev->dev, 1);

	ricoh_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
		&rc5t583_rtc_ops, THIS_MODULE);
	if (IS_ERR(ricoh_rtc->rtc)) {
		ret = PTR_ERR(ricoh_rtc->rtc);
		dev_err(&pdev->dev, "RTC device register: err %d\n", ret);
		return ret;
	}

	return 0;
}

static int hym8563_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	struct hym8563 *hym8563;
	int ret;

	hym8563 = devm_kzalloc(&client->dev, sizeof(*hym8563), GFP_KERNEL);
	if (!hym8563)
		return -ENOMEM;

	hym8563->client = client;
	i2c_set_clientdata(client, hym8563);

	device_set_wakeup_capable(&client->dev, true);

	ret = hym8563_init_device(client);
	if (ret) {
		dev_err(&client->dev, "could not init device, %d\n", ret);
		return ret;
	}

	ret = devm_request_threaded_irq(&client->dev, client->irq,
					NULL, hym8563_irq,
					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
					client->name, hym8563);
	if (ret < 0) {
		dev_err(&client->dev, "irq %d request failed, %d\n",
			client->irq, ret);
		return ret;
	}

	/* check state of calendar information */
	ret = i2c_smbus_read_byte_data(client, HYM8563_SEC);
	if (ret < 0)
		return ret;

	hym8563->valid = !(ret & HYM8563_SEC_VL);
	dev_dbg(&client->dev, "rtc information is %s\n",
		hym8563->valid ? "valid" : "invalid");

	hym8563->rtc = devm_rtc_device_register(&client->dev, client->name,
						&hym8563_rtc_ops, THIS_MODULE);
	if (IS_ERR(hym8563->rtc))
		return PTR_ERR(hym8563->rtc);

	/* the hym8563 alarm only supports a minute accuracy */
	hym8563->rtc->uie_unsupported = 1;

#ifdef CONFIG_COMMON_CLK
	hym8563_clkout_register_clk(hym8563);
#endif

	return 0;
}