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rtc: Add MAX8998 rtc driver

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This adds support for the RTC provided by the Maxim 8998 chip. This
driver was tested on a GONI board by using the rtc-test application from
the Documentation/rtc.txt.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Joonyoung Shim
2010-08-06 11:28:08 +09:00
committed by Samuel Ortiz
parent 2c7e6f5797
commit 9b16c0a43b
5 changed files with 339 additions and 2 deletions
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6
include/linux/mfd/max8998-private.h
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@@ -126,7 +126,8 @@ enum {
/**
* struct max8998_dev - max8998 master device for sub-drivers
* @dev: master device of the chip (can be used to access platform data)
* @i2c: i2c client private data
* @i2c: i2c client private data for regulator
* @rtc: i2c client private data for rtc
* @iolock: mutex for serializing io access
* @irqlock: mutex for buslock
* @irq_base: base IRQ number for max8998, required for IRQs
@@ -138,6 +139,7 @@ enum {
struct max8998_dev {
struct device *dev;
struct i2c_client *i2c;
struct i2c_client *rtc;
struct mutex iolock;
struct mutex irqlock;
@@ -155,6 +157,8 @@ extern int max8998_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest);
extern int max8998_bulk_read(struct i2c_client *i2c, u8 reg, int count,
u8 *buf);
extern int max8998_write_reg(struct i2c_client *i2c, u8 reg, u8 value);
extern int max8998_bulk_write(struct i2c_client *i2c, u8 reg, int count,
u8 *buf);
extern int max8998_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask);
#endif /* __LINUX_MFD_MAX8998_PRIV_H */