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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/mfd/qcom-pm8xxx.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--drivers/mfd/qcom-pm8xxx.c622
1 files changed, 622 insertions, 0 deletions
diff --git a/drivers/mfd/qcom-pm8xxx.c b/drivers/mfd/qcom-pm8xxx.c
new file mode 100644
index 0000000000..07c531bd12
--- /dev/null
+++ b/drivers/mfd/qcom-pm8xxx.c
@@ -0,0 +1,622 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/ssbi.h>
+#include <linux/regmap.h>
+#include <linux/of_platform.h>
+#include <linux/mfd/core.h>
+
+#define SSBI_REG_ADDR_IRQ_BASE 0x1BB
+
+#define SSBI_REG_ADDR_IRQ_ROOT (SSBI_REG_ADDR_IRQ_BASE + 0)
+#define SSBI_REG_ADDR_IRQ_M_STATUS1 (SSBI_REG_ADDR_IRQ_BASE + 1)
+#define SSBI_REG_ADDR_IRQ_M_STATUS2 (SSBI_REG_ADDR_IRQ_BASE + 2)
+#define SSBI_REG_ADDR_IRQ_M_STATUS3 (SSBI_REG_ADDR_IRQ_BASE + 3)
+#define SSBI_REG_ADDR_IRQ_M_STATUS4 (SSBI_REG_ADDR_IRQ_BASE + 4)
+#define SSBI_REG_ADDR_IRQ_BLK_SEL (SSBI_REG_ADDR_IRQ_BASE + 5)
+#define SSBI_REG_ADDR_IRQ_IT_STATUS (SSBI_REG_ADDR_IRQ_BASE + 6)
+#define SSBI_REG_ADDR_IRQ_CONFIG (SSBI_REG_ADDR_IRQ_BASE + 7)
+#define SSBI_REG_ADDR_IRQ_RT_STATUS (SSBI_REG_ADDR_IRQ_BASE + 8)
+
+#define PM8821_SSBI_REG_ADDR_IRQ_BASE 0x100
+#define PM8821_SSBI_REG_ADDR_IRQ_MASTER0 (PM8821_SSBI_REG_ADDR_IRQ_BASE + 0x30)
+#define PM8821_SSBI_REG_ADDR_IRQ_MASTER1 (PM8821_SSBI_REG_ADDR_IRQ_BASE + 0xb0)
+#define PM8821_SSBI_REG(m, b, offset) \
+ ((m == 0) ? \
+ (PM8821_SSBI_REG_ADDR_IRQ_MASTER0 + b + offset) : \
+ (PM8821_SSBI_REG_ADDR_IRQ_MASTER1 + b + offset))
+#define PM8821_SSBI_ADDR_IRQ_ROOT(m, b) PM8821_SSBI_REG(m, b, 0x0)
+#define PM8821_SSBI_ADDR_IRQ_CLEAR(m, b) PM8821_SSBI_REG(m, b, 0x01)
+#define PM8821_SSBI_ADDR_IRQ_MASK(m, b) PM8821_SSBI_REG(m, b, 0x08)
+#define PM8821_SSBI_ADDR_IRQ_RT_STATUS(m, b) PM8821_SSBI_REG(m, b, 0x0f)
+
+#define PM8821_BLOCKS_PER_MASTER 7
+
+#define PM_IRQF_LVL_SEL 0x01 /* level select */
+#define PM_IRQF_MASK_FE 0x02 /* mask falling edge */
+#define PM_IRQF_MASK_RE 0x04 /* mask rising edge */
+#define PM_IRQF_CLR 0x08 /* clear interrupt */
+#define PM_IRQF_BITS_MASK 0x70
+#define PM_IRQF_BITS_SHIFT 4
+#define PM_IRQF_WRITE 0x80
+
+#define PM_IRQF_MASK_ALL (PM_IRQF_MASK_FE | \
+ PM_IRQF_MASK_RE)
+
+#define REG_HWREV 0x002 /* PMIC4 revision */
+#define REG_HWREV_2 0x0E8 /* PMIC4 revision 2 */
+
+#define PM8XXX_NR_IRQS 256
+#define PM8821_NR_IRQS 112
+
+struct pm_irq_data {
+ int num_irqs;
+ struct irq_chip *irq_chip;
+ irq_handler_t irq_handler;
+};
+
+struct pm_irq_chip {
+ struct regmap *regmap;
+ spinlock_t pm_irq_lock;
+ struct irq_domain *irqdomain;
+ unsigned int num_blocks;
+ unsigned int num_masters;
+ const struct pm_irq_data *pm_irq_data;
+ /* MUST BE AT THE END OF THIS STRUCT */
+ u8 config[];
+};
+
+static int pm8xxx_read_block_irq(struct pm_irq_chip *chip, unsigned int bp,
+ unsigned int *ip)
+{
+ int rc;
+
+ spin_lock(&chip->pm_irq_lock);
+ rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, bp);
+ if (rc) {
+ pr_err("Failed Selecting Block %d rc=%d\n", bp, rc);
+ goto bail;
+ }
+
+ rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_IT_STATUS, ip);
+ if (rc)
+ pr_err("Failed Reading Status rc=%d\n", rc);
+bail:
+ spin_unlock(&chip->pm_irq_lock);
+ return rc;
+}
+
+static int
+pm8xxx_config_irq(struct pm_irq_chip *chip, unsigned int bp, unsigned int cp)
+{
+ int rc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->pm_irq_lock, flags);
+ rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, bp);
+ if (rc) {
+ pr_err("Failed Selecting Block %d rc=%d\n", bp, rc);
+ goto bail;
+ }
+
+ cp |= PM_IRQF_WRITE;
+ rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_CONFIG, cp);
+ if (rc)
+ pr_err("Failed Configuring IRQ rc=%d\n", rc);
+bail:
+ spin_unlock_irqrestore(&chip->pm_irq_lock, flags);
+ return rc;
+}
+
+static int pm8xxx_irq_block_handler(struct pm_irq_chip *chip, int block)
+{
+ int pmirq, i, ret = 0;
+ unsigned int bits;
+
+ ret = pm8xxx_read_block_irq(chip, block, &bits);
+ if (ret) {
+ pr_err("Failed reading %d block ret=%d", block, ret);
+ return ret;
+ }
+ if (!bits) {
+ pr_err("block bit set in master but no irqs: %d", block);
+ return 0;
+ }
+
+ /* Check IRQ bits */
+ for (i = 0; i < 8; i++) {
+ if (bits & (1 << i)) {
+ pmirq = block * 8 + i;
+ generic_handle_domain_irq(chip->irqdomain, pmirq);
+ }
+ }
+ return 0;
+}
+
+static int pm8xxx_irq_master_handler(struct pm_irq_chip *chip, int master)
+{
+ unsigned int blockbits;
+ int block_number, i, ret = 0;
+
+ ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_M_STATUS1 + master,
+ &blockbits);
+ if (ret) {
+ pr_err("Failed to read master %d ret=%d\n", master, ret);
+ return ret;
+ }
+ if (!blockbits) {
+ pr_err("master bit set in root but no blocks: %d", master);
+ return 0;
+ }
+
+ for (i = 0; i < 8; i++)
+ if (blockbits & (1 << i)) {
+ block_number = master * 8 + i; /* block # */
+ ret |= pm8xxx_irq_block_handler(chip, block_number);
+ }
+ return ret;
+}
+
+static irqreturn_t pm8xxx_irq_handler(int irq, void *data)
+{
+ struct pm_irq_chip *chip = data;
+ unsigned int root;
+ int i, ret, masters = 0;
+
+ ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_ROOT, &root);
+ if (ret) {
+ pr_err("Can't read root status ret=%d\n", ret);
+ return IRQ_NONE;
+ }
+
+ /* on pm8xxx series masters start from bit 1 of the root */
+ masters = root >> 1;
+
+ /* Read allowed masters for blocks. */
+ for (i = 0; i < chip->num_masters; i++)
+ if (masters & (1 << i))
+ pm8xxx_irq_master_handler(chip, i);
+
+ return IRQ_HANDLED;
+}
+
+static void pm8821_irq_block_handler(struct pm_irq_chip *chip,
+ int master, int block)
+{
+ int pmirq, i, ret;
+ unsigned int bits;
+
+ ret = regmap_read(chip->regmap,
+ PM8821_SSBI_ADDR_IRQ_ROOT(master, block), &bits);
+ if (ret) {
+ pr_err("Reading block %d failed ret=%d", block, ret);
+ return;
+ }
+
+ /* Convert block offset to global block number */
+ block += (master * PM8821_BLOCKS_PER_MASTER) - 1;
+
+ /* Check IRQ bits */
+ for (i = 0; i < 8; i++) {
+ if (bits & BIT(i)) {
+ pmirq = block * 8 + i;
+ generic_handle_domain_irq(chip->irqdomain, pmirq);
+ }
+ }
+}
+
+static inline void pm8821_irq_master_handler(struct pm_irq_chip *chip,
+ int master, u8 master_val)
+{
+ int block;
+
+ for (block = 1; block < 8; block++)
+ if (master_val & BIT(block))
+ pm8821_irq_block_handler(chip, master, block);
+}
+
+static irqreturn_t pm8821_irq_handler(int irq, void *data)
+{
+ struct pm_irq_chip *chip = data;
+ unsigned int master;
+ int ret;
+
+ ret = regmap_read(chip->regmap,
+ PM8821_SSBI_REG_ADDR_IRQ_MASTER0, &master);
+ if (ret) {
+ pr_err("Failed to read master 0 ret=%d\n", ret);
+ return IRQ_NONE;
+ }
+
+ /* bits 1 through 7 marks the first 7 blocks in master 0 */
+ if (master & GENMASK(7, 1))
+ pm8821_irq_master_handler(chip, 0, master);
+
+ /* bit 0 marks if master 1 contains any bits */
+ if (!(master & BIT(0)))
+ return IRQ_NONE;
+
+ ret = regmap_read(chip->regmap,
+ PM8821_SSBI_REG_ADDR_IRQ_MASTER1, &master);
+ if (ret) {
+ pr_err("Failed to read master 1 ret=%d\n", ret);
+ return IRQ_NONE;
+ }
+
+ pm8821_irq_master_handler(chip, 1, master);
+
+ return IRQ_HANDLED;
+}
+
+static void pm8xxx_irq_mask_ack(struct irq_data *d)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ unsigned int pmirq = irqd_to_hwirq(d);
+ u8 block, config;
+
+ block = pmirq / 8;
+
+ config = chip->config[pmirq] | PM_IRQF_MASK_ALL | PM_IRQF_CLR;
+ pm8xxx_config_irq(chip, block, config);
+}
+
+static void pm8xxx_irq_unmask(struct irq_data *d)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ unsigned int pmirq = irqd_to_hwirq(d);
+ u8 block, config;
+
+ block = pmirq / 8;
+
+ config = chip->config[pmirq];
+ pm8xxx_config_irq(chip, block, config);
+}
+
+static int pm8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ unsigned int pmirq = irqd_to_hwirq(d);
+ int irq_bit;
+ u8 block, config;
+
+ block = pmirq / 8;
+ irq_bit = pmirq % 8;
+
+ chip->config[pmirq] = (irq_bit << PM_IRQF_BITS_SHIFT)
+ | PM_IRQF_MASK_ALL;
+ if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
+ if (flow_type & IRQF_TRIGGER_RISING)
+ chip->config[pmirq] &= ~PM_IRQF_MASK_RE;
+ if (flow_type & IRQF_TRIGGER_FALLING)
+ chip->config[pmirq] &= ~PM_IRQF_MASK_FE;
+ } else {
+ chip->config[pmirq] |= PM_IRQF_LVL_SEL;
+
+ if (flow_type & IRQF_TRIGGER_HIGH)
+ chip->config[pmirq] &= ~PM_IRQF_MASK_RE;
+ else
+ chip->config[pmirq] &= ~PM_IRQF_MASK_FE;
+ }
+
+ config = chip->config[pmirq] | PM_IRQF_CLR;
+ return pm8xxx_config_irq(chip, block, config);
+}
+
+static int pm8xxx_irq_get_irqchip_state(struct irq_data *d,
+ enum irqchip_irq_state which,
+ bool *state)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ unsigned int pmirq = irqd_to_hwirq(d);
+ unsigned int bits;
+ unsigned long flags;
+ int irq_bit;
+ u8 block;
+ int rc;
+
+ if (which != IRQCHIP_STATE_LINE_LEVEL)
+ return -EINVAL;
+
+ block = pmirq / 8;
+ irq_bit = pmirq % 8;
+
+ spin_lock_irqsave(&chip->pm_irq_lock, flags);
+ rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, block);
+ if (rc) {
+ pr_err("Failed Selecting Block %d rc=%d\n", block, rc);
+ goto bail;
+ }
+
+ rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_RT_STATUS, &bits);
+ if (rc) {
+ pr_err("Failed Reading Status rc=%d\n", rc);
+ goto bail;
+ }
+
+ *state = !!(bits & BIT(irq_bit));
+bail:
+ spin_unlock_irqrestore(&chip->pm_irq_lock, flags);
+
+ return rc;
+}
+
+static struct irq_chip pm8xxx_irq_chip = {
+ .name = "pm8xxx",
+ .irq_mask_ack = pm8xxx_irq_mask_ack,
+ .irq_unmask = pm8xxx_irq_unmask,
+ .irq_set_type = pm8xxx_irq_set_type,
+ .irq_get_irqchip_state = pm8xxx_irq_get_irqchip_state,
+ .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
+};
+
+static void pm8xxx_irq_domain_map(struct pm_irq_chip *chip,
+ struct irq_domain *domain, unsigned int irq,
+ irq_hw_number_t hwirq, unsigned int type)
+{
+ irq_domain_set_info(domain, irq, hwirq, chip->pm_irq_data->irq_chip,
+ chip, handle_level_irq, NULL, NULL);
+ irq_set_noprobe(irq);
+}
+
+static int pm8xxx_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
+ unsigned int nr_irqs, void *data)
+{
+ struct pm_irq_chip *chip = domain->host_data;
+ struct irq_fwspec *fwspec = data;
+ irq_hw_number_t hwirq;
+ unsigned int type;
+ int ret, i;
+
+ ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < nr_irqs; i++)
+ pm8xxx_irq_domain_map(chip, domain, virq + i, hwirq + i, type);
+
+ return 0;
+}
+
+static const struct irq_domain_ops pm8xxx_irq_domain_ops = {
+ .alloc = pm8xxx_irq_domain_alloc,
+ .free = irq_domain_free_irqs_common,
+ .translate = irq_domain_translate_twocell,
+};
+
+static void pm8821_irq_mask_ack(struct irq_data *d)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ unsigned int pmirq = irqd_to_hwirq(d);
+ u8 block, master;
+ int irq_bit, rc;
+
+ block = pmirq / 8;
+ master = block / PM8821_BLOCKS_PER_MASTER;
+ irq_bit = pmirq % 8;
+ block %= PM8821_BLOCKS_PER_MASTER;
+
+ rc = regmap_update_bits(chip->regmap,
+ PM8821_SSBI_ADDR_IRQ_MASK(master, block),
+ BIT(irq_bit), BIT(irq_bit));
+ if (rc) {
+ pr_err("Failed to mask IRQ:%d rc=%d\n", pmirq, rc);
+ return;
+ }
+
+ rc = regmap_update_bits(chip->regmap,
+ PM8821_SSBI_ADDR_IRQ_CLEAR(master, block),
+ BIT(irq_bit), BIT(irq_bit));
+ if (rc)
+ pr_err("Failed to CLEAR IRQ:%d rc=%d\n", pmirq, rc);
+}
+
+static void pm8821_irq_unmask(struct irq_data *d)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ unsigned int pmirq = irqd_to_hwirq(d);
+ int irq_bit, rc;
+ u8 block, master;
+
+ block = pmirq / 8;
+ master = block / PM8821_BLOCKS_PER_MASTER;
+ irq_bit = pmirq % 8;
+ block %= PM8821_BLOCKS_PER_MASTER;
+
+ rc = regmap_update_bits(chip->regmap,
+ PM8821_SSBI_ADDR_IRQ_MASK(master, block),
+ BIT(irq_bit), ~BIT(irq_bit));
+ if (rc)
+ pr_err("Failed to read/write unmask IRQ:%d rc=%d\n", pmirq, rc);
+
+}
+
+static int pm8821_irq_get_irqchip_state(struct irq_data *d,
+ enum irqchip_irq_state which,
+ bool *state)
+{
+ struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d);
+ int rc, pmirq = irqd_to_hwirq(d);
+ u8 block, irq_bit, master;
+ unsigned int bits;
+
+ block = pmirq / 8;
+ master = block / PM8821_BLOCKS_PER_MASTER;
+ irq_bit = pmirq % 8;
+ block %= PM8821_BLOCKS_PER_MASTER;
+
+ rc = regmap_read(chip->regmap,
+ PM8821_SSBI_ADDR_IRQ_RT_STATUS(master, block), &bits);
+ if (rc) {
+ pr_err("Reading Status of IRQ %d failed rc=%d\n", pmirq, rc);
+ return rc;
+ }
+
+ *state = !!(bits & BIT(irq_bit));
+
+ return rc;
+}
+
+static struct irq_chip pm8821_irq_chip = {
+ .name = "pm8821",
+ .irq_mask_ack = pm8821_irq_mask_ack,
+ .irq_unmask = pm8821_irq_unmask,
+ .irq_get_irqchip_state = pm8821_irq_get_irqchip_state,
+ .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
+};
+
+static const struct regmap_config ssbi_regmap_config = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .max_register = 0x3ff,
+ .fast_io = true,
+ .reg_read = ssbi_reg_read,
+ .reg_write = ssbi_reg_write
+};
+
+static const struct pm_irq_data pm8xxx_data = {
+ .num_irqs = PM8XXX_NR_IRQS,
+ .irq_chip = &pm8xxx_irq_chip,
+ .irq_handler = pm8xxx_irq_handler,
+};
+
+static const struct pm_irq_data pm8821_data = {
+ .num_irqs = PM8821_NR_IRQS,
+ .irq_chip = &pm8821_irq_chip,
+ .irq_handler = pm8821_irq_handler,
+};
+
+static const struct of_device_id pm8xxx_id_table[] = {
+ { .compatible = "qcom,pm8058", .data = &pm8xxx_data},
+ { .compatible = "qcom,pm8821", .data = &pm8821_data},
+ { .compatible = "qcom,pm8921", .data = &pm8xxx_data},
+ { }
+};
+MODULE_DEVICE_TABLE(of, pm8xxx_id_table);
+
+static int pm8xxx_probe(struct platform_device *pdev)
+{
+ const struct pm_irq_data *data;
+ struct regmap *regmap;
+ int irq, rc;
+ unsigned int val;
+ struct pm_irq_chip *chip;
+
+ data = of_device_get_match_data(&pdev->dev);
+ if (!data) {
+ dev_err(&pdev->dev, "No matching driver data found\n");
+ return -EINVAL;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ regmap = devm_regmap_init(&pdev->dev, NULL, pdev->dev.parent,
+ &ssbi_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* Read PMIC chip revision */
+ rc = regmap_read(regmap, REG_HWREV, &val);
+ if (rc) {
+ pr_err("Failed to read hw rev reg %d:rc=%d\n", REG_HWREV, rc);
+ return rc;
+ }
+ pr_info("PMIC revision 1: %02X\n", val);
+
+ /* Read PMIC chip revision 2 */
+ rc = regmap_read(regmap, REG_HWREV_2, &val);
+ if (rc) {
+ pr_err("Failed to read hw rev 2 reg %d:rc=%d\n",
+ REG_HWREV_2, rc);
+ return rc;
+ }
+ pr_info("PMIC revision 2: %02X\n", val);
+
+ chip = devm_kzalloc(&pdev->dev,
+ struct_size(chip, config, data->num_irqs),
+ GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, chip);
+ chip->regmap = regmap;
+ chip->num_blocks = DIV_ROUND_UP(data->num_irqs, 8);
+ chip->num_masters = DIV_ROUND_UP(chip->num_blocks, 8);
+ chip->pm_irq_data = data;
+ spin_lock_init(&chip->pm_irq_lock);
+
+ chip->irqdomain = irq_domain_add_linear(pdev->dev.of_node,
+ data->num_irqs,
+ &pm8xxx_irq_domain_ops,
+ chip);
+ if (!chip->irqdomain)
+ return -ENODEV;
+
+ rc = devm_request_irq(&pdev->dev, irq, data->irq_handler, 0, dev_name(&pdev->dev), chip);
+ if (rc)
+ return rc;
+
+ irq_set_irq_wake(irq, 1);
+
+ rc = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+ if (rc)
+ irq_domain_remove(chip->irqdomain);
+
+ return rc;
+}
+
+static int pm8xxx_remove_child(struct device *dev, void *unused)
+{
+ platform_device_unregister(to_platform_device(dev));
+ return 0;
+}
+
+static int pm8xxx_remove(struct platform_device *pdev)
+{
+ struct pm_irq_chip *chip = platform_get_drvdata(pdev);
+
+ device_for_each_child(&pdev->dev, NULL, pm8xxx_remove_child);
+ irq_domain_remove(chip->irqdomain);
+
+ return 0;
+}
+
+static struct platform_driver pm8xxx_driver = {
+ .probe = pm8xxx_probe,
+ .remove = pm8xxx_remove,
+ .driver = {
+ .name = "pm8xxx-core",
+ .of_match_table = pm8xxx_id_table,
+ },
+};
+
+static int __init pm8xxx_init(void)
+{
+ return platform_driver_register(&pm8xxx_driver);
+}
+subsys_initcall(pm8xxx_init);
+
+static void __exit pm8xxx_exit(void)
+{
+ platform_driver_unregister(&pm8xxx_driver);
+}
+module_exit(pm8xxx_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("PMIC 8xxx core driver");
+MODULE_VERSION("1.0");
+MODULE_ALIAS("platform:pm8xxx-core");