static int max77686_i2c_probe(struct i2c_client *i2c)
{
	struct max77686_dev *max77686 = NULL;
	unsigned int data;
	int ret = 0;
	const struct regmap_config *config;
	const struct regmap_irq_chip *irq_chip;
	const struct mfd_cell *cells;
	int n_devs;

	max77686 = devm_kzalloc(&i2c->dev,
				sizeof(struct max77686_dev), GFP_KERNEL);
	if (!max77686)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max77686);
	max77686->type = (unsigned long)of_device_get_match_data(&i2c->dev);
	max77686->dev = &i2c->dev;
	max77686->i2c = i2c;

	max77686->irq = i2c->irq;

	if (max77686->type == TYPE_MAX77686) {
		config = &max77686_regmap_config;
		irq_chip = &max77686_irq_chip;
		cells =  max77686_devs;
		n_devs = ARRAY_SIZE(max77686_devs);
	} else {
		config = &max77802_regmap_config;
		irq_chip = &max77802_irq_chip;
		cells =  max77802_devs;
		n_devs = ARRAY_SIZE(max77802_devs);
	}

	max77686->regmap = devm_regmap_init_i2c(i2c, config);
	if (IS_ERR(max77686->regmap)) {
		ret = PTR_ERR(max77686->regmap);
		dev_err(max77686->dev, "Failed to allocate register map: %d\n",
				ret);
		return ret;
	}

	ret = regmap_read(max77686->regmap, MAX77686_REG_DEVICE_ID, &data);
	if (ret < 0) {
		dev_err(max77686->dev,
			"device not found on this channel (this is not an error)\n");
		return -ENODEV;
	}

	ret = devm_regmap_add_irq_chip(&i2c->dev, max77686->regmap,
				       max77686->irq,
				       IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
				       IRQF_SHARED, 0, irq_chip,
				       &max77686->irq_data);
	if (ret < 0) {
		dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret);
		return ret;
	}

	ret = devm_mfd_add_devices(max77686->dev, -1, cells, n_devs, NULL,
				   0, NULL);
	if (ret < 0) {
		dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
		return ret;
	}

	return 0;
}

static int lm3630_probe(struct i2c_client *client,
				  const struct i2c_device_id *id)
{
	struct lm3630_platform_data *pdata = client->dev.platform_data;
	struct lm3630_chip_data *pchip;
	int ret;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		dev_err(&client->dev, "fail : i2c functionality check...\n");
		return -EOPNOTSUPP;
	}

	if (pdata == NULL) {
		dev_err(&client->dev, "fail : no platform data.\n");
		return -ENODATA;
	}

	pchip = devm_kzalloc(&client->dev, sizeof(struct lm3630_chip_data),
			     GFP_KERNEL);
	if (!pchip)
		return -ENOMEM;

	pchip->pdata = pdata;
	pchip->dev = &client->dev;
	pchip->brightness_store = pdata->init_brt_led1;

	pchip->regmap = devm_regmap_init_i2c(client, &lm3630_regmap);
	if (IS_ERR(pchip->regmap)) {
		ret = PTR_ERR(pchip->regmap);
		dev_err(&client->dev, "fail : allocate register map: %d\n",
			ret);
		return ret;
	}
	i2c_set_clientdata(client, pchip);

	/* power get*/
	ret = lm3630_power_on(pchip, true);
	if (ret)
		goto err_bl_pwr;

	/* chip initialize */
	ret = lm3630_chip_init(pchip);
	if (ret < 0) {
		dev_err(&client->dev, "fail : init chip\n");
		lm3630_power_on(pchip, false);
		goto err_bl_pwr;
	}

	switch (pdata->bank_a_ctrl) {
	case BANK_A_CTRL_ALL:
		ret = lm3630_backlight_register(pchip, BLED_ALL);
		pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE;
		break;
	case BANK_A_CTRL_LED1:
		ret = lm3630_backlight_register(pchip, BLED_1);
		break;
	case BANK_A_CTRL_LED2:
		ret = lm3630_backlight_register(pchip, BLED_2);
		pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE;
		break;
	default:
		break;
	}

	if (ret < 0)
		goto err_bl_reg;

	if (pdata->bank_b_ctrl && pchip->bled2 == NULL) {
		ret = lm3630_backlight_register(pchip, BLED_2);
		if (ret < 0)
			goto err_bl_reg;
	}
	/* interrupt enable  : irq 0 is not allowed for lm3630 */
	pchip->irq = client->irq;
	if (pchip->irq)
		lm3630_intr_config(pchip);
#ifdef CONFIG_HAS_EARLYSUSPEND
	pchip->early_suspend.suspend = lm3630_early_suspend;
	pchip->early_suspend.resume = lm3630_late_resume;
	pchip->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN;
	register_early_suspend(&pchip->early_suspend);
#endif

	dev_info(&client->dev, "LM3630 backlight register OK.\n");

	return 0;

err_bl_reg:
	dev_err(&client->dev, "fail : backlight register.\n");
	lm3630_backlight_unregister(pchip);
err_bl_pwr:
	if (pchip)
		kfree(pchip);
err_chip_init:
	return ret;
}

static int ltc3676_regulator_probe(struct i2c_client *client,
				    const struct i2c_device_id *id)
{
	struct device *dev = &client->dev;
	struct regulator_init_data *init_data = dev_get_platdata(dev);
	struct regulator_desc *descs;
	struct ltc3676 *ltc3676;
	int i, ret;

	ltc3676 = devm_kzalloc(dev, sizeof(*ltc3676), GFP_KERNEL);
	if (!ltc3676)
		return -ENOMEM;

	i2c_set_clientdata(client, ltc3676);
	ltc3676->dev = dev;

	descs = ltc3676->regulator_descs;
	memcpy(descs, ltc3676_regulators, sizeof(ltc3676_regulators));
	descs[LTC3676_LDO3].fixed_uV = 1800000; /* LDO3 is fixed 1.8V */

	ltc3676->regmap = devm_regmap_init_i2c(client, &ltc3676_regmap_config);
	if (IS_ERR(ltc3676->regmap)) {
		ret = PTR_ERR(ltc3676->regmap);
		dev_err(dev, "failed to initialize regmap: %d\n", ret);
		return ret;
	}

	for (i = 0; i < LTC3676_NUM_REGULATORS; i++) {
		struct regulator_desc *desc = &ltc3676->regulator_descs[i];
		struct regulator_config config = { };

		if (init_data)
			config.init_data = &init_data[i];

		config.dev = dev;
		config.driver_data = ltc3676;

		ltc3676->regulators[i] = devm_regulator_register(dev, desc,
								 &config);
		if (IS_ERR(ltc3676->regulators[i])) {
			ret = PTR_ERR(ltc3676->regulators[i]);
			dev_err(dev, "failed to register regulator %s: %d\n",
				desc->name, ret);
			return ret;
		}
	}

	regmap_write(ltc3676->regmap, LTC3676_CLIRQ, 0);
	if (client->irq) {
		ret = devm_request_threaded_irq(dev, client->irq, NULL,
						ltc3676_isr,
						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
						client->name, ltc3676);
		if (ret) {
			dev_err(dev, "Failed to request IRQ: %d\n", ret);
			return ret;
		}
	}

	return 0;
}

static int max77693_i2c_probe(struct i2c_client *i2c,
			      const struct i2c_device_id *id)
{
	struct max77693_dev *max77693;
	unsigned int reg_data;
	int ret = 0;

	max77693 = devm_kzalloc(&i2c->dev,
			sizeof(struct max77693_dev), GFP_KERNEL);
	if (max77693 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max77693);
	max77693->dev = &i2c->dev;
	max77693->i2c = i2c;
	max77693->irq = i2c->irq;
	max77693->type = id->driver_data;

	max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
	if (IS_ERR(max77693->regmap)) {
		ret = PTR_ERR(max77693->regmap);
		dev_err(max77693->dev, "failed to allocate register map: %d\n",
				ret);
		return ret;
	}

	ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
				&reg_data);
	if (ret < 0) {
		dev_err(max77693->dev, "device not found on this channel\n");
		return ret;
	} else
		dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);

	max77693->i2c_muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
	if (!max77693->i2c_muic) {
		dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
		return -ENODEV;
	}
	i2c_set_clientdata(max77693->i2c_muic, max77693);

	max77693->i2c_haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
	if (!max77693->i2c_haptic) {
		dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
		ret = -ENODEV;
		goto err_i2c_haptic;
	}
	i2c_set_clientdata(max77693->i2c_haptic, max77693);

	max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,
					&max77693_regmap_haptic_config);
	if (IS_ERR(max77693->regmap_haptic)) {
		ret = PTR_ERR(max77693->regmap_haptic);
		dev_err(max77693->dev,
			"failed to initialize haptic register map: %d\n", ret);
		goto err_regmap;
	}

	/*
	 * Initialize register map for MUIC device because use regmap-muic
	 * instance of MUIC device when irq of max77693 is initialized
	 * before call max77693-muic probe() function.
	 */
	max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,
					 &max77693_regmap_muic_config);
	if (IS_ERR(max77693->regmap_muic)) {
		ret = PTR_ERR(max77693->regmap_muic);
		dev_err(max77693->dev,
			"failed to allocate register map: %d\n", ret);
		goto err_regmap;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_led_irq_chip,
				&max77693->irq_data_led);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_regmap;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_topsys_irq_chip,
				&max77693->irq_data_topsys);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_topsys;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_charger_irq_chip,
				&max77693->irq_data_chg);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_charger;
//.........这里部分代码省略.........

static int tmp102_probe(struct i2c_client *client,
				  const struct i2c_device_id *id)
{
	struct device *dev = &client->dev;
	struct device *hwmon_dev;
	struct tmp102 *tmp102;
	unsigned int regval;
	int err;

	if (!i2c_check_functionality(client->adapter,
				     I2C_FUNC_SMBUS_WORD_DATA)) {
		dev_err(dev,
			"adapter doesn't support SMBus word transactions\n");
		return -ENODEV;
	}

	tmp102 = devm_kzalloc(dev, sizeof(*tmp102), GFP_KERNEL);
	if (!tmp102)
		return -ENOMEM;

	i2c_set_clientdata(client, tmp102);

	tmp102->regmap = devm_regmap_init_i2c(client, &tmp102_regmap_config);
	if (IS_ERR(tmp102->regmap))
		return PTR_ERR(tmp102->regmap);

	err = regmap_read(tmp102->regmap, TMP102_CONF_REG, &regval);
	if (err < 0) {
		dev_err(dev, "error reading config register\n");
		return err;
	}

	if ((regval & ~TMP102_CONFREG_MASK) !=
	    (TMP102_CONF_R0 | TMP102_CONF_R1)) {
		dev_err(dev, "unexpected config register value\n");
		return -ENODEV;
	}

	tmp102->config_orig = regval;

	devm_add_action(dev, tmp102_restore_config, tmp102);

	regval &= ~TMP102_CONFIG_CLEAR;
	regval |= TMP102_CONFIG_SET;

	err = regmap_write(tmp102->regmap, TMP102_CONF_REG, regval);
	if (err < 0) {
		dev_err(dev, "error writing config register\n");
		return err;
	}

	tmp102->ready_time = jiffies;
	if (tmp102->config_orig & TMP102_CONF_SD) {
		/*
		 * Mark that we are not ready with data until the first
		 * conversion is complete
		 */
		tmp102->ready_time += msecs_to_jiffies(CONVERSION_TIME_MS);
	}

	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
							   tmp102,
							   tmp102_groups);
	if (IS_ERR(hwmon_dev)) {
		dev_dbg(dev, "unable to register hwmon device\n");
		return PTR_ERR(hwmon_dev);
	}
	devm_thermal_zone_of_sensor_register(hwmon_dev, 0, hwmon_dev,
					     &tmp102_of_thermal_ops);

	dev_info(dev, "initialized\n");

	return 0;
}

static int cs35l34_i2c_probe(struct i2c_client *i2c_client,
			      const struct i2c_device_id *id)
{
	struct cs35l34_private *cs35l34;
	struct cs35l34_platform_data *pdata =
		dev_get_platdata(&i2c_client->dev);
	int i;
	int ret;
	unsigned int devid = 0;
	unsigned int reg;

	cs35l34 = devm_kzalloc(&i2c_client->dev,
			       sizeof(struct cs35l34_private),
			       GFP_KERNEL);
	if (!cs35l34) {
		dev_err(&i2c_client->dev, "could not allocate codec\n");
		return -ENOMEM;
	}

	i2c_set_clientdata(i2c_client, cs35l34);
	cs35l34->regmap = devm_regmap_init_i2c(i2c_client, &cs35l34_regmap);
	if (IS_ERR(cs35l34->regmap)) {
		ret = PTR_ERR(cs35l34->regmap);
		dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
		return ret;
	}

	cs35l34->num_core_supplies = ARRAY_SIZE(cs35l34_core_supplies);
	for (i = 0; i < ARRAY_SIZE(cs35l34_core_supplies); i++)
		cs35l34->core_supplies[i].supply = cs35l34_core_supplies[i];

	ret = devm_regulator_bulk_get(&i2c_client->dev,
		cs35l34->num_core_supplies,
		cs35l34->core_supplies);
	if (ret != 0) {
		dev_err(&i2c_client->dev,
			"Failed to request core supplies %d\n", ret);
		return ret;
	}

	ret = regulator_bulk_enable(cs35l34->num_core_supplies,
					cs35l34->core_supplies);
	if (ret != 0) {
		dev_err(&i2c_client->dev,
			"Failed to enable core supplies: %d\n", ret);
		return ret;
	}

	if (pdata) {
		cs35l34->pdata = *pdata;
	} else {
		pdata = devm_kzalloc(&i2c_client->dev,
				sizeof(struct cs35l34_platform_data),
				GFP_KERNEL);
		if (!pdata) {
			dev_err(&i2c_client->dev,
				"could not allocate pdata\n");
			return -ENOMEM;
		}
		if (i2c_client->dev.of_node) {
			ret = cs35l34_handle_of_data(i2c_client, pdata);
			if (ret != 0)
				return ret;

		}
		cs35l34->pdata = *pdata;
	}

	ret = devm_request_threaded_irq(&i2c_client->dev, i2c_client->irq, NULL,
			cs35l34_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_LOW,
			"cs35l34", cs35l34);
	if (ret != 0)
		dev_err(&i2c_client->dev, "Failed to request IRQ: %d\n", ret);

	cs35l34->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
				"reset-gpios", GPIOD_OUT_LOW);
	if (IS_ERR(cs35l34->reset_gpio))
		return PTR_ERR(cs35l34->reset_gpio);

	gpiod_set_value_cansleep(cs35l34->reset_gpio, 1);

	msleep(CS35L34_START_DELAY);

	ret = regmap_read(cs35l34->regmap, CS35L34_DEVID_AB, &reg);

	devid = (reg & 0xFF) << 12;
	ret = regmap_read(cs35l34->regmap, CS35L34_DEVID_CD, &reg);
	devid |= (reg & 0xFF) << 4;
	ret = regmap_read(cs35l34->regmap, CS35L34_DEVID_E, &reg);
	devid |= (reg & 0xF0) >> 4;

	if (devid != CS35L34_CHIP_ID) {
		dev_err(&i2c_client->dev,
			"CS35l34 Device ID (%X). Expected ID %X\n",
			devid, CS35L34_CHIP_ID);
		ret = -ENODEV;
		goto err_regulator;
	}

	ret = regmap_read(cs35l34->regmap, CS35L34_REV_ID, &reg);
//.........这里部分代码省略.........

static int fan53555_regulator_probe(struct i2c_client *client,
				const struct i2c_device_id *id)
{
	struct fan53555_device_info *di;
	struct fan53555_platform_data *pdata;
	struct regulator_config config = { };
	unsigned int val;
	int ret;

	pdata = client->dev.platform_data;
	if (!pdata || !pdata->regulator) {
		dev_err(&client->dev, "Platform data not found!\n");
		return -ENODEV;
	}

	di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info),
					GFP_KERNEL);
	if (!di) {
		dev_err(&client->dev, "Failed to allocate device info data!\n");
		return -ENOMEM;
	}
	di->regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
	if (IS_ERR(di->regmap)) {
		dev_err(&client->dev, "Failed to allocate regmap!\n");
		return PTR_ERR(di->regmap);
	}
	di->dev = &client->dev;
	di->regulator = pdata->regulator;
	i2c_set_clientdata(client, di);
	/* Get chip ID */
	ret = regmap_read(di->regmap, FAN53555_ID1, &val);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to get chip ID!\n");
		return -ENODEV;
	}
	di->chip_id = val & DIE_ID;
	/* Get chip revision */
	ret = regmap_read(di->regmap, FAN53555_ID2, &val);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to get chip Rev!\n");
		return -ENODEV;
	}
	di->chip_rev = val & DIE_REV;
	dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n",
				di->chip_id, di->chip_rev);
	/* Device init */
	ret = fan53555_device_setup(di, pdata);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to setup device!\n");
		return ret;
	}
	/* Register regulator */
	config.dev = di->dev;
	config.init_data = di->regulator;
	config.regmap = di->regmap;
	config.driver_data = di;
	ret = fan53555_regulator_register(di, &config);
	if (ret < 0)
		dev_err(&client->dev, "Failed to register regulator!\n");
	return ret;

}

static int lm3630_probe(struct i2c_client *client,
				  const struct i2c_device_id *id)
{
	struct lm3630_platform_data *pdata = client->dev.platform_data;
	struct lm3630_chip_data *pchip;
	int ret;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		dev_err(&client->dev, "fail : i2c functionality check...\n");
		return -EOPNOTSUPP;
	}

	if (pdata == NULL) {
		dev_err(&client->dev, "fail : no platform data.\n");
		return -ENODATA;
	}

	pchip = devm_kzalloc(&client->dev, sizeof(struct lm3630_chip_data),
			     GFP_KERNEL);
	if (!pchip)
		return -ENOMEM;
	pchip->pdata = pdata;
	pchip->dev = &client->dev;

	pchip->regmap = devm_regmap_init_i2c(client, &lm3630_regmap);
	if (IS_ERR(pchip->regmap)) {
		ret = PTR_ERR(pchip->regmap);
		dev_err(&client->dev, "fail : allocate register map: %d\n",
			ret);
		return ret;
	}
	i2c_set_clientdata(client, pchip);

	/* chip initialize */
	ret = lm3630_chip_init(pchip);
	if (ret < 0) {
		dev_err(&client->dev, "fail : init chip\n");
		goto err_chip_init;
	}

	switch (pdata->bank_a_ctrl) {
	case BANK_A_CTRL_ALL:
		ret = lm3630_backlight_register(pchip, BLED_ALL);
		pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE;
		break;
	case BANK_A_CTRL_LED1:
		ret = lm3630_backlight_register(pchip, BLED_1);
		break;
	case BANK_A_CTRL_LED2:
		ret = lm3630_backlight_register(pchip, BLED_2);
		pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE;
		break;
	default:
		break;
	}

	if (ret < 0)
		goto err_bl_reg;

	if (pdata->bank_b_ctrl && pchip->bled2 == NULL) {
		ret = lm3630_backlight_register(pchip, BLED_2);
		if (ret < 0)
			goto err_bl_reg;
	}

	/* interrupt enable  : irq 0 is not allowed for lm3630 */
	pchip->irq = client->irq;
	if (pchip->irq)
		lm3630_intr_config(pchip);

	dev_info(&client->dev, "LM3630 backlight register OK.\n");
	return 0;

err_bl_reg:
	dev_err(&client->dev, "fail : backlight register.\n");
	lm3630_backlight_unregister(pchip);
err_chip_init:
	return ret;
}

static int fan53555_regulator_probe(struct i2c_client *client,
				const struct i2c_device_id *id)
{
	struct device_node *np = client->dev.of_node;
	struct fan53555_device_info *di;
	struct fan53555_platform_data *pdata;
	struct regulator_config config = { };
	unsigned int val;
	int ret;

	di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info),
					GFP_KERNEL);
	if (!di)
		return -ENOMEM;

	pdata = dev_get_platdata(&client->dev);
	if (!pdata)
		pdata = fan53555_parse_dt(&client->dev, np, &di->desc);

	if (!pdata || !pdata->regulator) {
		dev_err(&client->dev, "Platform data not found!\n");
		return -ENODEV;
	}

	di->regulator = pdata->regulator;
	if (client->dev.of_node) {
		const struct of_device_id *match;

		match = of_match_device(of_match_ptr(fan53555_dt_ids),
					&client->dev);
		if (!match)
			return -ENODEV;

		di->vendor = (unsigned long) match->data;
	} else {
		/* if no ramp constraint set, get the pdata ramp_delay */
		if (!di->regulator->constraints.ramp_delay) {
			int slew_idx = (pdata->slew_rate & 0x7)
						? pdata->slew_rate : 0;

			di->regulator->constraints.ramp_delay
						= slew_rates[slew_idx];
		}

		di->vendor = id->driver_data;
	}

	di->regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
	if (IS_ERR(di->regmap)) {
		dev_err(&client->dev, "Failed to allocate regmap!\n");
		return PTR_ERR(di->regmap);
	}
	di->dev = &client->dev;
	i2c_set_clientdata(client, di);
	/* Get chip ID */
	ret = regmap_read(di->regmap, FAN53555_ID1, &val);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to get chip ID!\n");
		return ret;
	}
	di->chip_id = val & DIE_ID;
	/* Get chip revision */
	ret = regmap_read(di->regmap, FAN53555_ID2, &val);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to get chip Rev!\n");
		return ret;
	}
	di->chip_rev = val & DIE_REV;
	dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n",
				di->chip_id, di->chip_rev);
	/* Device init */
	ret = fan53555_device_setup(di, pdata);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to setup device!\n");
		return ret;
	}
	/* Register regulator */
	config.dev = di->dev;
	config.init_data = di->regulator;
	config.regmap = di->regmap;
	config.driver_data = di;
	config.of_node = np;

	ret = fan53555_regulator_register(di, &config);
	if (ret < 0)
		dev_err(&client->dev, "Failed to register regulator!\n");
	return ret;

}

static int pm830_probe(struct i2c_client *client,
		       const struct i2c_device_id *id)
{
	int ret = 0;
	struct pm830_chip *chip;
	struct pm830_platform_data *pdata = client->dev.platform_data;
	struct device_node *node = client->dev.of_node;
	struct regmap *map;

	if (IS_ENABLED(CONFIG_OF)) {
		if (!pdata) {
			pdata = devm_kzalloc(&client->dev,
					     sizeof(*pdata), GFP_KERNEL);
			if (!pdata)
				return -ENOMEM;
		}
		ret = pm830_dt_init(node, &client->dev, pdata);
		if (ret)
			goto err_out;
	} else if (!pdata) {
		return -EINVAL;
	}

	chip = devm_kzalloc(&client->dev,
			    sizeof(struct pm830_chip), GFP_KERNEL);
	if (!chip)
		return -ENOMEM;

	map = devm_regmap_init_i2c(client, &pm830_regmap_config);
	if (IS_ERR(map)) {
		ret = PTR_ERR(map);
		dev_err(&client->dev,
			"Failed to allocate register map: %d\n", ret);
		goto err_out;
	}

	chip->client = client;
	chip->regmap = pm830_map = map;
	chip->dev = &client->dev;

	dev_set_drvdata(chip->dev, chip);
	i2c_set_clientdata(chip->client, chip);

	ret = device_830_init(chip, pdata);
	if (ret) {
		dev_err(chip->dev, "failed to init 88pm830\n");
		goto err_out;
	}

	ret = device_gpadc_init_830(chip);
	if (ret < 0) {
		dev_err(chip->dev, "failed to init 88pm830 gpadc!\n");
		goto err_out;
	}

	chip->regmap_irq_chip = &pm830_irq_chip;
	chip->irq = client->irq;
	chip->irq_flags = pdata->irq_flags;
	ret = device_irq_init_830(chip);
	if (ret < 0) {
		dev_err(chip->dev, "failed to init 88pm830 irq!\n");
		goto err_out;
	}

	if (IS_ENABLED(CONFIG_CHARGER_88PM830)) {
		ret = device_chg_init(chip);
		if (ret) {
			dev_err(chip->dev, "failed to add charger subdev\n");
			goto out_dev;
		}
	}

	if (IS_ENABLED(CONFIG_BATTERY_88PM830)) {
		ret = device_bat_init(chip);
		if (ret) {
			dev_err(chip->dev, "failed to add battery subdev\n");
			goto out_dev;
		}
	}

	if (IS_ENABLED(CONFIG_USB_88PM830)) {
		ret = device_usb_init(chip);
		if (ret) {
			dev_err(chip->dev, "failed to add vbus subdev\n");
			goto out_dev;
		}
	}

	if (IS_ENABLED(CONFIG_LEDS_88PM830)) {
		ret = device_led_init(chip);
		if (ret) {
			dev_err(chip->dev, "failed to add led subdev\n");
			goto out_dev;
		}
	}

	/* use 88pm830 as wakeup source */
	device_init_wakeup(&client->dev, 1);

	ret = pm830_dump_debugfs_init(chip);
//.........这里部分代码省略.........

static int cs35l32_i2c_probe(struct i2c_client *i2c_client,
				       const struct i2c_device_id *id)
{
	struct cs35l32_private *cs35l32;
	struct cs35l32_platform_data *pdata =
		dev_get_platdata(&i2c_client->dev);
	int ret, i;
	unsigned int devid = 0;
	unsigned int reg;


	cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l32_private),
			       GFP_KERNEL);
	if (!cs35l32) {
		dev_err(&i2c_client->dev, "could not allocate codec\n");
		return -ENOMEM;
	}

	i2c_set_clientdata(i2c_client, cs35l32);

	cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
	if (IS_ERR(cs35l32->regmap)) {
		ret = PTR_ERR(cs35l32->regmap);
		dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
		return ret;
	}

	if (pdata) {
		cs35l32->pdata = *pdata;
	} else {
		pdata = devm_kzalloc(&i2c_client->dev,
				     sizeof(struct cs35l32_platform_data),
				GFP_KERNEL);
		if (!pdata) {
			dev_err(&i2c_client->dev, "could not allocate pdata\n");
			return -ENOMEM;
		}
		if (i2c_client->dev.of_node) {
			ret = cs35l32_handle_of_data(i2c_client,
						     &cs35l32->pdata);
			if (ret != 0)
				return ret;
		}
	}

	for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
		cs35l32->supplies[i].supply = cs35l32_supply_names[i];

	ret = devm_regulator_bulk_get(&i2c_client->dev,
				      ARRAY_SIZE(cs35l32->supplies),
				      cs35l32->supplies);
	if (ret != 0) {
		dev_err(&i2c_client->dev,
			"Failed to request supplies: %d\n", ret);
		return ret;
	}

	ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
				    cs35l32->supplies);
	if (ret != 0) {
		dev_err(&i2c_client->dev,
			"Failed to enable supplies: %d\n", ret);
		return ret;
	}

	/* Reset the Device */
	cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
		"reset", GPIOD_OUT_LOW);
	if (IS_ERR(cs35l32->reset_gpio))
		return PTR_ERR(cs35l32->reset_gpio);

	if (cs35l32->reset_gpio)
		gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);

	/* initialize codec */
	ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
	devid = (reg & 0xFF) << 12;

	ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, &reg);
	devid |= (reg & 0xFF) << 4;

	ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, &reg);
	devid |= (reg & 0xF0) >> 4;

	if (devid != CS35L32_CHIP_ID) {
		ret = -ENODEV;
		dev_err(&i2c_client->dev,
			"CS35L32 Device ID (%X). Expected %X\n",
			devid, CS35L32_CHIP_ID);
		return ret;
	}

	ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
	if (ret < 0) {
		dev_err(&i2c_client->dev, "Get Revision ID failed\n");
		return ret;
	}

	ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
				    ARRAY_SIZE(cs35l32_monitor_patch));
//.........这里部分代码省略.........

static int max8973_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	struct max8973_regulator_platform_data *pdata;
	struct regulator_init_data *ridata;
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	struct max8973_chip *max;
	bool pdata_from_dt = false;
	unsigned int chip_id;
	int ret;

	pdata = dev_get_platdata(&client->dev);

	if (!pdata && client->dev.of_node) {
		pdata = max8973_parse_dt(&client->dev);
		pdata_from_dt = true;
	}

	if (!pdata) {
		dev_err(&client->dev, "No Platform data");
		return -EIO;
	}

	if ((pdata->dvs_gpio == -EPROBE_DEFER) ||
		(pdata->enable_gpio == -EPROBE_DEFER))
		return -EPROBE_DEFER;

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

	max->regmap = devm_regmap_init_i2c(client, &max8973_regmap_config);
	if (IS_ERR(max->regmap)) {
		ret = PTR_ERR(max->regmap);
		dev_err(&client->dev, "regmap init failed, err %d\n", ret);
		return ret;
	}

	if (client->dev.of_node) {
		const struct of_device_id *match;

		match = of_match_device(of_match_ptr(of_max8973_match_tbl),
				&client->dev);
		if (!match)
			return -ENODATA;
		max->id = (u32)((uintptr_t)match->data);
	} else {
		max->id = id->driver_data;
	}

	ret = regmap_read(max->regmap, MAX8973_CHIPID1, &chip_id);
	if (ret < 0) {
		dev_err(&client->dev, "register CHIPID1 read failed, %d", ret);
		return ret;
	}

	dev_info(&client->dev, "CHIP-ID OTP: 0x%02x ID_M: 0x%02x\n",
			(chip_id >> 4) & 0xF, (chip_id >> 1) & 0x7);

	i2c_set_clientdata(client, max);
	max->ops = max8973_dcdc_ops;
	max->dev = &client->dev;
	max->desc.name = id->name;
	max->desc.id = 0;
	max->desc.ops = &max->ops;
	max->desc.type = REGULATOR_VOLTAGE;
	max->desc.owner = THIS_MODULE;
	max->desc.min_uV = MAX8973_MIN_VOLATGE;
	max->desc.uV_step = MAX8973_VOLATGE_STEP;
	max->desc.n_voltages = MAX8973_BUCK_N_VOLTAGE;

	max->dvs_gpio = (pdata->dvs_gpio) ? pdata->dvs_gpio : -EINVAL;
	max->enable_gpio = (pdata->enable_gpio) ? pdata->enable_gpio : -EINVAL;
	max->enable_external_control = pdata->enable_ext_control;
	max->curr_gpio_val = pdata->dvs_def_state;
	max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;

	if (gpio_is_valid(max->enable_gpio))
		max->enable_external_control = true;

	max->lru_index[0] = max->curr_vout_reg;

	if (gpio_is_valid(max->dvs_gpio)) {
		int gpio_flags;
		int i;

		gpio_flags = (pdata->dvs_def_state) ?
				GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
		ret = devm_gpio_request_one(&client->dev, max->dvs_gpio,
				gpio_flags, "max8973-dvs");
		if (ret) {
			dev_err(&client->dev,
				"gpio_request for gpio %d failed, err = %d\n",
				max->dvs_gpio, ret);
			return ret;
		}

		/*
		 * Initialize the lru index with vout_reg id
//.........这里部分代码省略.........

/*
 * alc5632 2 wire address is determined by A1 pin
 * state during powerup.
 *    low  = 0x1a
 *    high = 0x1b
 */
static int alc5632_i2c_probe(struct i2c_client *client,
			     const struct i2c_device_id *id)
{
	struct alc5632_priv *alc5632;
	int ret, ret1, ret2;
	unsigned int vid1, vid2;

	alc5632 = devm_kzalloc(&client->dev,
			 sizeof(struct alc5632_priv), GFP_KERNEL);
	if (alc5632 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(client, alc5632);

	alc5632->regmap = devm_regmap_init_i2c(client, &alc5632_regmap);
	if (IS_ERR(alc5632->regmap)) {
		ret = PTR_ERR(alc5632->regmap);
		dev_err(&client->dev, "regmap_init() failed: %d\n", ret);
		return ret;
	}

	ret1 = regmap_read(alc5632->regmap, ALC5632_VENDOR_ID1, &vid1);
	ret2 = regmap_read(alc5632->regmap, ALC5632_VENDOR_ID2, &vid2);
	if (ret1 != 0 || ret2 != 0) {
		dev_err(&client->dev,
		"Failed to read chip ID: ret1=%d, ret2=%d\n", ret1, ret2);
		return -EIO;
	}

	vid2 >>= 8;

	if ((vid1 != 0x10EC) || (vid2 != id->driver_data)) {
		dev_err(&client->dev,
		"Device is not a ALC5632: VID1=0x%x, VID2=0x%x\n", vid1, vid2);
		return -EINVAL;
	}

	ret = alc5632_reset(alc5632->regmap);
	if (ret < 0) {
		dev_err(&client->dev, "Failed to issue reset\n");
		return ret;
	}

	alc5632->id = vid2;
	switch (alc5632->id) {
	case 0x5c:
		alc5632_dai.name = "alc5632-hifi";
		break;
	default:
		return -EINVAL;
	}

	ret = snd_soc_register_codec(&client->dev,
		&soc_codec_device_alc5632, &alc5632_dai, 1);

	if (ret < 0) {
		dev_err(&client->dev, "Failed to register codec: %d\n", ret);
		return ret;
	}

	return ret;
}

static int tps65217_probe(struct i2c_client *client,
				const struct i2c_device_id *ids)
{
	struct tps65217 *tps;
	unsigned int version;
	unsigned long chip_id = ids->driver_data;
	const struct of_device_id *match;
	bool status_off = false;
	int ret;

	if (client->dev.of_node) {
		match = of_match_device(tps65217_of_match, &client->dev);
		if (!match) {
			dev_err(&client->dev,
				"Failed to find matching dt id\n");
			return -EINVAL;
		}
		chip_id = (unsigned long)match->data;
		status_off = of_property_read_bool(client->dev.of_node,
					"ti,pmic-shutdown-controller");
	}

	if (!chip_id) {
		dev_err(&client->dev, "id is null.\n");
		return -ENODEV;
	}

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

	i2c_set_clientdata(client, tps);
	tps->dev = &client->dev;
	tps->id = chip_id;

	tps->regmap = devm_regmap_init_i2c(client, &tps65217_regmap_config);
	if (IS_ERR(tps->regmap)) {
		ret = PTR_ERR(tps->regmap);
		dev_err(tps->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	ret = mfd_add_devices(tps->dev, -1, tps65217s,
			      ARRAY_SIZE(tps65217s), NULL, 0, NULL);
	if (ret < 0) {
		dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret);
		return ret;
	}

	ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version);
	if (ret < 0) {
		dev_err(tps->dev, "Failed to read revision register: %d\n",
			ret);
		return ret;
	}

	/* Set the PMIC to shutdown on PWR_EN toggle */
	if (status_off) {
		ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
				TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
				TPS65217_PROTECT_NONE);
		if (ret)
			dev_warn(tps->dev, "unable to set the status OFF\n");
	}

	dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
			(version & TPS65217_CHIPID_CHIP_MASK) >> 4,
			version & TPS65217_CHIPID_REV_MASK);

	return 0;
}

static int twl6040_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	struct device_node *node = client->dev.of_node;
	struct twl6040 *twl6040;
	struct mfd_cell *cell = NULL;
	int irq, ret, children = 0;

	if (!node) {
		dev_err(&client->dev, "of node is missing\n");
		return -EINVAL;
	}

	/* In order to operate correctly we need valid interrupt config */
	if (!client->irq) {
		dev_err(&client->dev, "Invalid IRQ configuration\n");
		return -EINVAL;
	}

	twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040),
			       GFP_KERNEL);
	if (!twl6040)
		return -ENOMEM;

	twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config);
	if (IS_ERR(twl6040->regmap))
		return PTR_ERR(twl6040->regmap);

	i2c_set_clientdata(client, twl6040);

	twl6040->supplies[0].supply = "vio";
	twl6040->supplies[1].supply = "v2v1";
	ret = devm_regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES,
				      twl6040->supplies);
	if (ret != 0) {
		dev_err(&client->dev, "Failed to get supplies: %d\n", ret);
		goto regulator_get_err;
	}

	ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
	if (ret != 0) {
		dev_err(&client->dev, "Failed to enable supplies: %d\n", ret);
		goto regulator_get_err;
	}

	twl6040->dev = &client->dev;
	twl6040->irq = client->irq;

	mutex_init(&twl6040->mutex);
	init_completion(&twl6040->ready);

	twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV);

	/* ERRATA: Automatic power-up is not possible in ES1.0 */
	if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0)
		twl6040->audpwron = of_get_named_gpio(node,
						      "ti,audpwron-gpio", 0);
	else
		twl6040->audpwron = -EINVAL;

	if (gpio_is_valid(twl6040->audpwron)) {
		ret = devm_gpio_request_one(&client->dev, twl6040->audpwron,
					    GPIOF_OUT_INIT_LOW, "audpwron");
		if (ret)
			goto gpio_err;
	}

	ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq, IRQF_ONESHOT,
				  0, &twl6040_irq_chip,&twl6040->irq_data);
	if (ret < 0)
		goto gpio_err;

	twl6040->irq_ready = regmap_irq_get_virq(twl6040->irq_data,
						 TWL6040_IRQ_READY);
	twl6040->irq_th = regmap_irq_get_virq(twl6040->irq_data,
					      TWL6040_IRQ_TH);

	ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_ready, NULL,
					twl6040_readyint_handler, IRQF_ONESHOT,
					"twl6040_irq_ready", twl6040);
	if (ret) {
		dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret);
		goto readyirq_err;
	}

	ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_th, NULL,
					twl6040_thint_handler, IRQF_ONESHOT,
					"twl6040_irq_th", twl6040);
	if (ret) {
		dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret);
		goto thirq_err;
	}

	/* dual-access registers controlled by I2C only */
	twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL);

	/*
	 * The main functionality of twl6040 to provide audio on OMAP4+ systems.
	 * We can add the ASoC codec child whenever this driver has been loaded.
	 */
//.........这里部分代码省略.........

static int lm3639_probe(struct i2c_client *client,
				  const struct i2c_device_id *id)
{
	int ret;
	struct lm3639_chip_data *pchip;
	struct lm3639_platform_data *pdata = dev_get_platdata(&client->dev);
	struct backlight_properties props;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		dev_err(&client->dev, "i2c functionality check fail.\n");
		return -EOPNOTSUPP;
	}

	if (pdata == NULL) {
		dev_err(&client->dev, "Needs Platform Data.\n");
		return -ENODATA;
	}

	pchip = devm_kzalloc(&client->dev,
			     sizeof(struct lm3639_chip_data), GFP_KERNEL);
	if (!pchip)
		return -ENOMEM;

	pchip->pdata = pdata;
	pchip->dev = &client->dev;

	pchip->regmap = devm_regmap_init_i2c(client, &lm3639_regmap);
	if (IS_ERR(pchip->regmap)) {
		ret = PTR_ERR(pchip->regmap);
		dev_err(&client->dev, "fail : allocate register map: %d\n",
			ret);
		return ret;
	}
	i2c_set_clientdata(client, pchip);

	/* chip initialize */
	ret = lm3639_chip_init(pchip);
	if (ret < 0) {
		dev_err(&client->dev, "fail : chip init\n");
		goto err_out;
	}

	/* backlight */
	props.type = BACKLIGHT_RAW;
	props.brightness = pdata->init_brt_led;
	props.max_brightness = pdata->max_brt_led;
	pchip->bled =
	    devm_backlight_device_register(pchip->dev, "lm3639_bled",
					   pchip->dev, pchip, &lm3639_bled_ops,
					   &props);
	if (IS_ERR(pchip->bled)) {
		dev_err(&client->dev, "fail : backlight register\n");
		ret = PTR_ERR(pchip->bled);
		goto err_out;
	}

	ret = device_create_file(&(pchip->bled->dev), &dev_attr_bled_mode);
	if (ret < 0) {
		dev_err(&client->dev, "failed : add sysfs entries\n");
		goto err_out;
	}

	/* flash */
	pchip->cdev_flash.name = "lm3639_flash";
	pchip->cdev_flash.max_brightness = 16;
	pchip->cdev_flash.brightness_set = lm3639_flash_brightness_set;
	ret = led_classdev_register((struct device *)
				    &client->dev, &pchip->cdev_flash);
	if (ret < 0) {
		dev_err(&client->dev, "fail : flash register\n");
		goto err_flash;
	}

	/* torch */
	pchip->cdev_torch.name = "lm3639_torch";
	pchip->cdev_torch.max_brightness = 8;
	pchip->cdev_torch.brightness_set = lm3639_torch_brightness_set;
	ret = led_classdev_register((struct device *)
				    &client->dev, &pchip->cdev_torch);
	if (ret < 0) {
		dev_err(&client->dev, "fail : torch register\n");
		goto err_torch;
	}

	return 0;

err_torch:
	led_classdev_unregister(&pchip->cdev_flash);
err_flash:
	device_remove_file(&(pchip->bled->dev), &dev_attr_bled_mode);
err_out:
	return ret;
}

static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *i2c_id)
{
	struct wm2000_priv *wm2000;
	struct wm2000_platform_data *pdata;
	const char *filename;
	const struct firmware *fw = NULL;
	int ret, i;
	int reg;
	u16 id;

	wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv),
			      GFP_KERNEL);
	if (wm2000 == NULL) {
		dev_err(&i2c->dev, "Unable to allocate private data\n");
		return -ENOMEM;
	}

	dev_set_drvdata(&i2c->dev, wm2000);

	wm2000->regmap = devm_regmap_init_i2c(i2c, &wm2000_regmap);
	if (IS_ERR(wm2000->regmap)) {
		ret = PTR_ERR(wm2000->regmap);
		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
			ret);
		goto out;
	}

	for (i = 0; i < WM2000_NUM_SUPPLIES; i++)
		wm