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path: root/drivers/mfd/sec-core.c
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Diffstat (limited to 'drivers/mfd/sec-core.c')
-rw-r--r--drivers/mfd/sec-core.c216
1 files changed, 216 insertions, 0 deletions
diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c
new file mode 100644
index 000000000000..2988efde11eb
--- /dev/null
+++ b/drivers/mfd/sec-core.c
@@ -0,0 +1,216 @@
+/*
+ * sec-core.c
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ * http://www.samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+#include <linux/mutex.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/samsung/core.h>
+#include <linux/mfd/samsung/irq.h>
+#include <linux/mfd/samsung/rtc.h>
+#include <linux/regmap.h>
+
+static struct mfd_cell s5m8751_devs[] = {
+ {
+ .name = "s5m8751-pmic",
+ }, {
+ .name = "s5m-charger",
+ }, {
+ .name = "s5m8751-codec",
+ },
+};
+
+static struct mfd_cell s5m8763_devs[] = {
+ {
+ .name = "s5m8763-pmic",
+ }, {
+ .name = "s5m-rtc",
+ }, {
+ .name = "s5m-charger",
+ },
+};
+
+static struct mfd_cell s5m8767_devs[] = {
+ {
+ .name = "s5m8767-pmic",
+ }, {
+ .name = "s5m-rtc",
+ },
+};
+
+static struct mfd_cell s2mps11_devs[] = {
+ {
+ .name = "s2mps11-pmic",
+ },
+};
+
+int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)
+{
+ return regmap_read(sec_pmic->regmap, reg, dest);
+}
+EXPORT_SYMBOL_GPL(sec_reg_read);
+
+int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
+{
+ return regmap_bulk_read(sec_pmic->regmap, reg, buf, count);
+}
+EXPORT_SYMBOL_GPL(sec_bulk_read);
+
+int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value)
+{
+ return regmap_write(sec_pmic->regmap, reg, value);
+}
+EXPORT_SYMBOL_GPL(sec_reg_write);
+
+int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
+{
+ return regmap_raw_write(sec_pmic->regmap, reg, buf, count);
+}
+EXPORT_SYMBOL_GPL(sec_bulk_write);
+
+int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask)
+{
+ return regmap_update_bits(sec_pmic->regmap, reg, mask, val);
+}
+EXPORT_SYMBOL_GPL(sec_reg_update);
+
+static struct regmap_config sec_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int sec_pmic_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct sec_platform_data *pdata = i2c->dev.platform_data;
+ struct sec_pmic_dev *sec_pmic;
+ int ret;
+
+ sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
+ GFP_KERNEL);
+ if (sec_pmic == NULL)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, sec_pmic);
+ sec_pmic->dev = &i2c->dev;
+ sec_pmic->i2c = i2c;
+ sec_pmic->irq = i2c->irq;
+ sec_pmic->type = id->driver_data;
+
+ if (pdata) {
+ sec_pmic->device_type = pdata->device_type;
+ sec_pmic->ono = pdata->ono;
+ sec_pmic->irq_base = pdata->irq_base;
+ sec_pmic->wakeup = pdata->wakeup;
+ }
+
+ sec_pmic->regmap = devm_regmap_init_i2c(i2c, &sec_regmap_config);
+ if (IS_ERR(sec_pmic->regmap)) {
+ ret = PTR_ERR(sec_pmic->regmap);
+ dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
+ i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
+
+ if (pdata && pdata->cfg_pmic_irq)
+ pdata->cfg_pmic_irq();
+
+ sec_irq_init(sec_pmic);
+
+ pm_runtime_set_active(sec_pmic->dev);
+
+ switch (sec_pmic->device_type) {
+ case S5M8751X:
+ ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
+ ARRAY_SIZE(s5m8751_devs), NULL, 0);
+ break;
+ case S5M8763X:
+ ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
+ ARRAY_SIZE(s5m8763_devs), NULL, 0);
+ break;
+ case S5M8767X:
+ ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
+ ARRAY_SIZE(s5m8767_devs), NULL, 0);
+ break;
+ case S2MPS11X:
+ ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
+ ARRAY_SIZE(s2mps11_devs), NULL, 0);
+ break;
+ default:
+ /* If this happens the probe function is problem */
+ BUG();
+ }
+
+ if (ret < 0)
+ goto err;
+
+ return ret;
+
+err:
+ mfd_remove_devices(sec_pmic->dev);
+ sec_irq_exit(sec_pmic);
+ i2c_unregister_device(sec_pmic->rtc);
+ return ret;
+}
+
+static int sec_pmic_remove(struct i2c_client *i2c)
+{
+ struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
+
+ mfd_remove_devices(sec_pmic->dev);
+ sec_irq_exit(sec_pmic);
+ i2c_unregister_device(sec_pmic->rtc);
+ return 0;
+}
+
+static const struct i2c_device_id sec_pmic_id[] = {
+ { "sec_pmic", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
+
+static struct i2c_driver sec_pmic_driver = {
+ .driver = {
+ .name = "sec_pmic",
+ .owner = THIS_MODULE,
+ },
+ .probe = sec_pmic_probe,
+ .remove = sec_pmic_remove,
+ .id_table = sec_pmic_id,
+};
+
+static int __init sec_pmic_init(void)
+{
+ return i2c_add_driver(&sec_pmic_driver);
+}
+
+subsys_initcall(sec_pmic_init);
+
+static void __exit sec_pmic_exit(void)
+{
+ i2c_del_driver(&sec_pmic_driver);
+}
+module_exit(sec_pmic_exit);
+
+MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
+MODULE_DESCRIPTION("Core support for the S5M MFD");
+MODULE_LICENSE("GPL");