Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 638 insertions, 0 deletions

diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c
new file mode 100644
index 000000000..9ca1f8c01
--- /dev/null
+++ b/drivers/mfd/intel_soc_pmic_bxtwc.c
@@ -0,0 +1,638 @@
+/*
+ * MFD core driver for Intel Broxton Whiskey Cove PMIC
+ *
+ * Copyright (C) 2015 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/intel_soc_pmic.h>
+#include <linux/mfd/intel_soc_pmic_bxtwc.h>
+#include <asm/intel_pmc_ipc.h>
+
+/* PMIC device registers */
+#define REG_ADDR_MASK		0xFF00
+#define REG_ADDR_SHIFT		8
+#define REG_OFFSET_MASK		0xFF
+
+/* Interrupt Status Registers */
+#define BXTWC_IRQLVL1		0x4E02
+
+#define BXTWC_PWRBTNIRQ		0x4E03
+#define BXTWC_THRM0IRQ		0x4E04
+#define BXTWC_THRM1IRQ		0x4E05
+#define BXTWC_THRM2IRQ		0x4E06
+#define BXTWC_BCUIRQ		0x4E07
+#define BXTWC_ADCIRQ		0x4E08
+#define BXTWC_CHGR0IRQ		0x4E09
+#define BXTWC_CHGR1IRQ		0x4E0A
+#define BXTWC_GPIOIRQ0		0x4E0B
+#define BXTWC_GPIOIRQ1		0x4E0C
+#define BXTWC_CRITIRQ		0x4E0D
+#define BXTWC_TMUIRQ		0x4FB6
+
+/* Interrupt MASK Registers */
+#define BXTWC_MIRQLVL1		0x4E0E
+#define BXTWC_MIRQLVL1_MCHGR	BIT(5)
+
+#define BXTWC_MPWRBTNIRQ	0x4E0F
+#define BXTWC_MTHRM0IRQ		0x4E12
+#define BXTWC_MTHRM1IRQ		0x4E13
+#define BXTWC_MTHRM2IRQ		0x4E14
+#define BXTWC_MBCUIRQ		0x4E15
+#define BXTWC_MADCIRQ		0x4E16
+#define BXTWC_MCHGR0IRQ		0x4E17
+#define BXTWC_MCHGR1IRQ		0x4E18
+#define BXTWC_MGPIO0IRQ		0x4E19
+#define BXTWC_MGPIO1IRQ		0x4E1A
+#define BXTWC_MCRITIRQ		0x4E1B
+#define BXTWC_MTMUIRQ		0x4FB7
+
+/* Whiskey Cove PMIC share same ACPI ID between different platforms */
+#define BROXTON_PMIC_WC_HRV	4
+
+enum bxtwc_irqs {
+	BXTWC_PWRBTN_LVL1_IRQ = 0,
+	BXTWC_TMU_LVL1_IRQ,
+	BXTWC_THRM_LVL1_IRQ,
+	BXTWC_BCU_LVL1_IRQ,
+	BXTWC_ADC_LVL1_IRQ,
+	BXTWC_CHGR_LVL1_IRQ,
+	BXTWC_GPIO_LVL1_IRQ,
+	BXTWC_CRIT_LVL1_IRQ,
+};
+
+enum bxtwc_irqs_pwrbtn {
+	BXTWC_PWRBTN_IRQ = 0,
+	BXTWC_UIBTN_IRQ,
+};
+
+enum bxtwc_irqs_bcu {
+	BXTWC_BCU_IRQ = 0,
+};
+
+enum bxtwc_irqs_adc {
+	BXTWC_ADC_IRQ = 0,
+};
+
+enum bxtwc_irqs_chgr {
+	BXTWC_USBC_IRQ = 0,
+	BXTWC_CHGR0_IRQ,
+	BXTWC_CHGR1_IRQ,
+};
+
+enum bxtwc_irqs_tmu {
+	BXTWC_TMU_IRQ = 0,
+};
+
+enum bxtwc_irqs_crit {
+	BXTWC_CRIT_IRQ = 0,
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs[] = {
+	REGMAP_IRQ_REG(BXTWC_PWRBTN_LVL1_IRQ, 0, BIT(0)),
+	REGMAP_IRQ_REG(BXTWC_TMU_LVL1_IRQ, 0, BIT(1)),
+	REGMAP_IRQ_REG(BXTWC_THRM_LVL1_IRQ, 0, BIT(2)),
+	REGMAP_IRQ_REG(BXTWC_BCU_LVL1_IRQ, 0, BIT(3)),
+	REGMAP_IRQ_REG(BXTWC_ADC_LVL1_IRQ, 0, BIT(4)),
+	REGMAP_IRQ_REG(BXTWC_CHGR_LVL1_IRQ, 0, BIT(5)),
+	REGMAP_IRQ_REG(BXTWC_GPIO_LVL1_IRQ, 0, BIT(6)),
+	REGMAP_IRQ_REG(BXTWC_CRIT_LVL1_IRQ, 0, BIT(7)),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_pwrbtn[] = {
+	REGMAP_IRQ_REG(BXTWC_PWRBTN_IRQ, 0, 0x01),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_bcu[] = {
+	REGMAP_IRQ_REG(BXTWC_BCU_IRQ, 0, 0x1f),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_adc[] = {
+	REGMAP_IRQ_REG(BXTWC_ADC_IRQ, 0, 0xff),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_chgr[] = {
+	REGMAP_IRQ_REG(BXTWC_USBC_IRQ, 0, 0x20),
+	REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 0, 0x1f),
+	REGMAP_IRQ_REG(BXTWC_CHGR1_IRQ, 1, 0x1f),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_tmu[] = {
+	REGMAP_IRQ_REG(BXTWC_TMU_IRQ, 0, 0x06),
+};
+
+static const struct regmap_irq bxtwc_regmap_irqs_crit[] = {
+	REGMAP_IRQ_REG(BXTWC_CRIT_IRQ, 0, 0x03),
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip = {
+	.name = "bxtwc_irq_chip",
+	.status_base = BXTWC_IRQLVL1,
+	.mask_base = BXTWC_MIRQLVL1,
+	.irqs = bxtwc_regmap_irqs,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs),
+	.num_regs = 1,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_pwrbtn = {
+	.name = "bxtwc_irq_chip_pwrbtn",
+	.status_base = BXTWC_PWRBTNIRQ,
+	.mask_base = BXTWC_MPWRBTNIRQ,
+	.irqs = bxtwc_regmap_irqs_pwrbtn,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_pwrbtn),
+	.num_regs = 1,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_tmu = {
+	.name = "bxtwc_irq_chip_tmu",
+	.status_base = BXTWC_TMUIRQ,
+	.mask_base = BXTWC_MTMUIRQ,
+	.irqs = bxtwc_regmap_irqs_tmu,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_tmu),
+	.num_regs = 1,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_bcu = {
+	.name = "bxtwc_irq_chip_bcu",
+	.status_base = BXTWC_BCUIRQ,
+	.mask_base = BXTWC_MBCUIRQ,
+	.irqs = bxtwc_regmap_irqs_bcu,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_bcu),
+	.num_regs = 1,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_adc = {
+	.name = "bxtwc_irq_chip_adc",
+	.status_base = BXTWC_ADCIRQ,
+	.mask_base = BXTWC_MADCIRQ,
+	.irqs = bxtwc_regmap_irqs_adc,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_adc),
+	.num_regs = 1,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_chgr = {
+	.name = "bxtwc_irq_chip_chgr",
+	.status_base = BXTWC_CHGR0IRQ,
+	.mask_base = BXTWC_MCHGR0IRQ,
+	.irqs = bxtwc_regmap_irqs_chgr,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_chgr),
+	.num_regs = 2,
+};
+
+static struct regmap_irq_chip bxtwc_regmap_irq_chip_crit = {
+	.name = "bxtwc_irq_chip_crit",
+	.status_base = BXTWC_CRITIRQ,
+	.mask_base = BXTWC_MCRITIRQ,
+	.irqs = bxtwc_regmap_irqs_crit,
+	.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_crit),
+	.num_regs = 1,
+};
+
+static struct resource gpio_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BXTWC_GPIO_LVL1_IRQ, "GPIO"),
+};
+
+static struct resource adc_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BXTWC_ADC_IRQ, "ADC"),
+};
+
+static struct resource usbc_resources[] = {
+	DEFINE_RES_IRQ(BXTWC_USBC_IRQ),
+};
+
+static struct resource charger_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR0_IRQ, "CHARGER"),
+	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR1_IRQ, "CHARGER1"),
+};
+
+static struct resource thermal_resources[] = {
+	DEFINE_RES_IRQ(BXTWC_THRM_LVL1_IRQ),
+};
+
+static struct resource bcu_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BXTWC_BCU_IRQ, "BCU"),
+};
+
+static struct resource tmu_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BXTWC_TMU_IRQ, "TMU"),
+};
+
+static struct mfd_cell bxt_wc_dev[] = {
+	{
+		.name = "bxt_wcove_gpadc",
+		.num_resources = ARRAY_SIZE(adc_resources),
+		.resources = adc_resources,
+	},
+	{
+		.name = "bxt_wcove_thermal",
+		.num_resources = ARRAY_SIZE(thermal_resources),
+		.resources = thermal_resources,
+	},
+	{
+		.name = "bxt_wcove_usbc",
+		.num_resources = ARRAY_SIZE(usbc_resources),
+		.resources = usbc_resources,
+	},
+	{
+		.name = "bxt_wcove_ext_charger",
+		.num_resources = ARRAY_SIZE(charger_resources),
+		.resources = charger_resources,
+	},
+	{
+		.name = "bxt_wcove_bcu",
+		.num_resources = ARRAY_SIZE(bcu_resources),
+		.resources = bcu_resources,
+	},
+	{
+		.name = "bxt_wcove_tmu",
+		.num_resources = ARRAY_SIZE(tmu_resources),
+		.resources = tmu_resources,
+	},
+
+	{
+		.name = "bxt_wcove_gpio",
+		.num_resources = ARRAY_SIZE(gpio_resources),
+		.resources = gpio_resources,
+	},
+	{
+		.name = "bxt_wcove_region",
+	},
+};
+
+static int regmap_ipc_byte_reg_read(void *context, unsigned int reg,
+				    unsigned int *val)
+{
+	int ret;
+	int i2c_addr;
+	u8 ipc_in[2];
+	u8 ipc_out[4];
+	struct intel_soc_pmic *pmic = context;
+
+	if (!pmic)
+		return -EINVAL;
+
+	if (reg & REG_ADDR_MASK)
+		i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
+	else
+		i2c_addr = BXTWC_DEVICE1_ADDR;
+
+	reg &= REG_OFFSET_MASK;
+
+	ipc_in[0] = reg;
+	ipc_in[1] = i2c_addr;
+	ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
+			PMC_IPC_PMIC_ACCESS_READ,
+			ipc_in, sizeof(ipc_in), (u32 *)ipc_out, 1);
+	if (ret) {
+		dev_err(pmic->dev, "Failed to read from PMIC\n");
+		return ret;
+	}
+	*val = ipc_out[0];
+
+	return 0;
+}
+
+static int regmap_ipc_byte_reg_write(void *context, unsigned int reg,
+				       unsigned int val)
+{
+	int ret;
+	int i2c_addr;
+	u8 ipc_in[3];
+	struct intel_soc_pmic *pmic = context;
+
+	if (!pmic)
+		return -EINVAL;
+
+	if (reg & REG_ADDR_MASK)
+		i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
+	else
+		i2c_addr = BXTWC_DEVICE1_ADDR;
+
+	reg &= REG_OFFSET_MASK;
+
+	ipc_in[0] = reg;
+	ipc_in[1] = i2c_addr;
+	ipc_in[2] = val;
+	ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
+			PMC_IPC_PMIC_ACCESS_WRITE,
+			ipc_in, sizeof(ipc_in), NULL, 0);
+	if (ret) {
+		dev_err(pmic->dev, "Failed to write to PMIC\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+/* sysfs interfaces to r/w PMIC registers, required by initial script */
+static unsigned long bxtwc_reg_addr;
+static ssize_t bxtwc_reg_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "0x%lx\n", bxtwc_reg_addr);
+}
+
+static ssize_t bxtwc_reg_store(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	if (kstrtoul(buf, 0, &bxtwc_reg_addr)) {
+		dev_err(dev, "Invalid register address\n");
+		return -EINVAL;
+	}
+	return (ssize_t)count;
+}
+
+static ssize_t bxtwc_val_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	int ret;
+	unsigned int val;
+	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+	ret = regmap_read(pmic->regmap, bxtwc_reg_addr, &val);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read 0x%lx\n", bxtwc_reg_addr);
+		return -EIO;
+	}
+
+	return sprintf(buf, "0x%02x\n", val);
+}
+
+static ssize_t bxtwc_val_store(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	int ret;
+	unsigned int val;
+	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+	ret = kstrtouint(buf, 0, &val);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(pmic->regmap, bxtwc_reg_addr, val);
+	if (ret) {
+		dev_err(dev, "Failed to write value 0x%02x to address 0x%lx",
+			val, bxtwc_reg_addr);
+		return -EIO;
+	}
+	return count;
+}
+
+static DEVICE_ATTR(addr, S_IWUSR | S_IRUSR, bxtwc_reg_show, bxtwc_reg_store);
+static DEVICE_ATTR(val, S_IWUSR | S_IRUSR, bxtwc_val_show, bxtwc_val_store);
+static struct attribute *bxtwc_attrs[] = {
+	&dev_attr_addr.attr,
+	&dev_attr_val.attr,
+	NULL
+};
+
+static const struct attribute_group bxtwc_group = {
+	.attrs = bxtwc_attrs,
+};
+
+static const struct regmap_config bxtwc_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.reg_write = regmap_ipc_byte_reg_write,
+	.reg_read = regmap_ipc_byte_reg_read,
+};
+
+static int bxtwc_add_chained_irq_chip(struct intel_soc_pmic *pmic,
+				struct regmap_irq_chip_data *pdata,
+				int pirq, int irq_flags,
+				const struct regmap_irq_chip *chip,
+				struct regmap_irq_chip_data **data)
+{
+	int irq;
+
+	irq = regmap_irq_get_virq(pdata, pirq);
+	if (irq < 0) {
+		dev_err(pmic->dev,
+			"Failed to get parent vIRQ(%d) for chip %s, ret:%d\n",
+			pirq, chip->name, irq);
+		return irq;
+	}
+
+	return devm_regmap_add_irq_chip(pmic->dev, pmic->regmap, irq, irq_flags,
+					0, chip, data);
+}
+
+static int bxtwc_probe(struct platform_device *pdev)
+{
+	int ret;
+	acpi_handle handle;
+	acpi_status status;
+	unsigned long long hrv;
+	struct intel_soc_pmic *pmic;
+
+	handle = ACPI_HANDLE(&pdev->dev);
+	status = acpi_evaluate_integer(handle, "_HRV", NULL, &hrv);
+	if (ACPI_FAILURE(status)) {
+		dev_err(&pdev->dev, "Failed to get PMIC hardware revision\n");
+		return -ENODEV;
+	}
+	if (hrv != BROXTON_PMIC_WC_HRV) {
+		dev_err(&pdev->dev, "Invalid PMIC hardware revision: %llu\n",
+			hrv);
+		return -ENODEV;
+	}
+
+	pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
+	if (!pmic)
+		return -ENOMEM;
+
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Invalid IRQ\n");
+		return ret;
+	}
+	pmic->irq = ret;
+
+	dev_set_drvdata(&pdev->dev, pmic);
+	pmic->dev = &pdev->dev;
+
+	pmic->regmap = devm_regmap_init(&pdev->dev, NULL, pmic,
+					&bxtwc_regmap_config);
+	if (IS_ERR(pmic->regmap)) {
+		ret = PTR_ERR(pmic->regmap);
+		dev_err(&pdev->dev, "Failed to initialise regmap: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_regmap_add_irq_chip(&pdev->dev, pmic->regmap, pmic->irq,
+				       IRQF_ONESHOT | IRQF_SHARED,
+				       0, &bxtwc_regmap_irq_chip,
+				       &pmic->irq_chip_data);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add IRQ chip\n");
+		return ret;
+	}
+
+	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
+					 BXTWC_PWRBTN_LVL1_IRQ,
+					 IRQF_ONESHOT,
+					 &bxtwc_regmap_irq_chip_pwrbtn,
+					 &pmic->irq_chip_data_pwrbtn);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add PWRBTN IRQ chip\n");
+		return ret;
+	}
+
+	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
+					 BXTWC_TMU_LVL1_IRQ,
+					 IRQF_ONESHOT,
+					 &bxtwc_regmap_irq_chip_tmu,
+					 &pmic->irq_chip_data_tmu);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add TMU IRQ chip\n");
+		return ret;
+	}
+
+	/* Add chained IRQ handler for BCU IRQs */
+	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
+					 BXTWC_BCU_LVL1_IRQ,
+					 IRQF_ONESHOT,
+					 &bxtwc_regmap_irq_chip_bcu,
+					 &pmic->irq_chip_data_bcu);
+
+
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add BUC IRQ chip\n");
+		return ret;
+	}
+
+	/* Add chained IRQ handler for ADC IRQs */
+	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
+					 BXTWC_ADC_LVL1_IRQ,
+					 IRQF_ONESHOT,
+					 &bxtwc_regmap_irq_chip_adc,
+					 &pmic->irq_chip_data_adc);
+
+
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add ADC IRQ chip\n");
+		return ret;
+	}
+
+	/* Add chained IRQ handler for CHGR IRQs */
+	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
+					 BXTWC_CHGR_LVL1_IRQ,
+					 IRQF_ONESHOT,
+					 &bxtwc_regmap_irq_chip_chgr,
+					 &pmic->irq_chip_data_chgr);
+
+
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add CHGR IRQ chip\n");
+		return ret;
+	}
+
+	/* Add chained IRQ handler for CRIT IRQs */
+	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
+					 BXTWC_CRIT_LVL1_IRQ,
+					 IRQF_ONESHOT,
+					 &bxtwc_regmap_irq_chip_crit,
+					 &pmic->irq_chip_data_crit);
+
+
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add CRIT IRQ chip\n");
+		return ret;
+	}
+
+	ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, bxt_wc_dev,
+				   ARRAY_SIZE(bxt_wc_dev), NULL, 0, NULL);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to add devices\n");
+		return ret;
+	}
+
+	ret = sysfs_create_group(&pdev->dev.kobj, &bxtwc_group);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to create sysfs group %d\n", ret);
+		return ret;
+	}
+
+	/*
+	 * There is known hw bug. Upon reset BIT 5 of register
+	 * BXTWC_CHGR_LVL1_IRQ is 0 which is the expected value. However,
+	 * later it's set to 1(masked) automatically by hardware. So we
+	 * have the software workaround here to unmaksed it in order to let
+	 * charger interrutp work.
+	 */
+	regmap_update_bits(pmic->regmap, BXTWC_MIRQLVL1,
+				BXTWC_MIRQLVL1_MCHGR, 0);
+
+	return 0;
+}
+
+static int bxtwc_remove(struct platform_device *pdev)
+{
+	sysfs_remove_group(&pdev->dev.kobj, &bxtwc_group);
+
+	return 0;
+}
+
+static void bxtwc_shutdown(struct platform_device *pdev)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
+
+	disable_irq(pmic->irq);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int bxtwc_suspend(struct device *dev)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+	disable_irq(pmic->irq);
+
+	return 0;
+}
+
+static int bxtwc_resume(struct device *dev)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
+
+	enable_irq(pmic->irq);
+	return 0;
+}
+#endif
+static SIMPLE_DEV_PM_OPS(bxtwc_pm_ops, bxtwc_suspend, bxtwc_resume);
+
+static const struct acpi_device_id bxtwc_acpi_ids[] = {
+	{ "INT34D3", },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, bxtwc_acpi_ids);
+
+static struct platform_driver bxtwc_driver = {
+	.probe = bxtwc_probe,
+	.remove	= bxtwc_remove,
+	.shutdown = bxtwc_shutdown,
+	.driver	= {
+		.name	= "BXTWC PMIC",
+		.pm     = &bxtwc_pm_ops,
+		.acpi_match_table = ACPI_PTR(bxtwc_acpi_ids),
+	},
+};
+
+module_platform_driver(bxtwc_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Qipeng Zha<qipeng.zha@intel.com>");