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Diffstat (limited to 'drivers/mfd/max8998.c')
-rw-r--r--drivers/mfd/max8998.c90
1 files changed, 69 insertions, 21 deletions
diff --git a/drivers/mfd/max8998.c b/drivers/mfd/max8998.c
index 73e6f5c4efc9..bb9977bebe78 100644
--- a/drivers/mfd/max8998.c
+++ b/drivers/mfd/max8998.c
@@ -1,5 +1,5 @@
/*
- * max8698.c - mfd core driver for the Maxim 8998
+ * max8998.c - mfd core driver for the Maxim 8998
*
* Copyright (C) 2009-2010 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
@@ -30,19 +30,23 @@
#include <linux/mfd/max8998.h>
#include <linux/mfd/max8998-private.h>
+#define RTC_I2C_ADDR (0x0c >> 1)
+
static struct mfd_cell max8998_devs[] = {
{
.name = "max8998-pmic",
- }
+ }, {
+ .name = "max8998-rtc",
+ },
};
-static int max8998_i2c_device_read(struct max8998_dev *max8998, u8 reg, u8 *dest)
+int max8998_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
{
- struct i2c_client *client = max8998->i2c_client;
+ struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8998->iolock);
- ret = i2c_smbus_read_byte_data(client, reg);
+ ret = i2c_smbus_read_byte_data(i2c, reg);
mutex_unlock(&max8998->iolock);
if (ret < 0)
return ret;
@@ -51,40 +55,71 @@ static int max8998_i2c_device_read(struct max8998_dev *max8998, u8 reg, u8 *dest
*dest = ret;
return 0;
}
+EXPORT_SYMBOL(max8998_read_reg);
-static int max8998_i2c_device_write(struct max8998_dev *max8998, u8 reg, u8 value)
+int max8998_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
- struct i2c_client *client = max8998->i2c_client;
+ struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&max8998->iolock);
+ ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
+ mutex_unlock(&max8998->iolock);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+EXPORT_SYMBOL(max8998_bulk_read);
+
+int max8998_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
+{
+ struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8998->iolock);
- ret = i2c_smbus_write_byte_data(client, reg, value);
+ ret = i2c_smbus_write_byte_data(i2c, reg, value);
mutex_unlock(&max8998->iolock);
return ret;
}
+EXPORT_SYMBOL(max8998_write_reg);
-static int max8998_i2c_device_update(struct max8998_dev *max8998, u8 reg,
- u8 val, u8 mask)
+int max8998_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
- struct i2c_client *client = max8998->i2c_client;
+ struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&max8998->iolock);
+ ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
+ mutex_unlock(&max8998->iolock);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+EXPORT_SYMBOL(max8998_bulk_write);
+
+int max8998_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
+{
+ struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8998->iolock);
- ret = i2c_smbus_read_byte_data(client, reg);
+ ret = i2c_smbus_read_byte_data(i2c, reg);
if (ret >= 0) {
u8 old_val = ret & 0xff;
u8 new_val = (val & mask) | (old_val & (~mask));
- ret = i2c_smbus_write_byte_data(client, reg, new_val);
- if (ret >= 0)
- ret = 0;
+ ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
}
mutex_unlock(&max8998->iolock);
return ret;
}
+EXPORT_SYMBOL(max8998_update_reg);
static int max8998_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
+ struct max8998_platform_data *pdata = i2c->dev.platform_data;
struct max8998_dev *max8998;
int ret = 0;
@@ -94,12 +129,20 @@ static int max8998_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, max8998);
max8998->dev = &i2c->dev;
- max8998->i2c_client = i2c;
- max8998->dev_read = max8998_i2c_device_read;
- max8998->dev_write = max8998_i2c_device_write;
- max8998->dev_update = max8998_i2c_device_update;
+ max8998->i2c = i2c;
+ max8998->irq = i2c->irq;
+ max8998->type = id->driver_data;
+ if (pdata) {
+ max8998->ono = pdata->ono;
+ max8998->irq_base = pdata->irq_base;
+ }
mutex_init(&max8998->iolock);
+ max8998->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
+ i2c_set_clientdata(max8998->rtc, max8998);
+
+ max8998_irq_init(max8998);
+
ret = mfd_add_devices(max8998->dev, -1,
max8998_devs, ARRAY_SIZE(max8998_devs),
NULL, 0);
@@ -110,6 +153,8 @@ static int max8998_i2c_probe(struct i2c_client *i2c,
err:
mfd_remove_devices(max8998->dev);
+ max8998_irq_exit(max8998);
+ i2c_unregister_device(max8998->rtc);
kfree(max8998);
return ret;
}
@@ -119,14 +164,17 @@ static int max8998_i2c_remove(struct i2c_client *i2c)
struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
mfd_remove_devices(max8998->dev);
+ max8998_irq_exit(max8998);
+ i2c_unregister_device(max8998->rtc);
kfree(max8998);
return 0;
}
static const struct i2c_device_id max8998_i2c_id[] = {
- { "max8998", 0 },
- { }
+ { "max8998", TYPE_MAX8998 },
+ { "lp3974", TYPE_LP3974},
+ { }
};
MODULE_DEVICE_TABLE(i2c, max8998_i2c_id);
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