From f3937549a975fadec9b517b059616f08f9cb7653 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 9 Feb 2016 22:56:34 +0530 Subject: rtc: max77686: move initialisation of rtc regmap, irq chip locally To make RTC block of MAX77686/MAX77802 as independent driver, move the registration of i2c device, regmap for register access and irq_chip for interrupt support inside the RTC driver. Removed the same initialisation from MFD driver. Having this change will allow to reuse this driver for different PMIC/devices from Maxim Semiconductor if they kept same RTC IP on different PMIC. Some of examples as PMIC MAX77620, MAX20024 where same RTC IP used and hence driver for these chips will use this driver only for RTC support. Suggested-by: Krzysztof Kozlowski Signed-off-by: Laxman Dewangan Tested-by: Javier Martinez Canillas Reviewed-by: Javier Martinez Canillas Acked-by: Lee Jones Tested-by: Krzysztof Kozlowski Reviewed-by: Krzysztof Kozlowski Signed-off-by: Alexandre Belloni --- include/linux/mfd/max77686-private.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include') diff --git a/include/linux/mfd/max77686-private.h b/include/linux/mfd/max77686-private.h index f5043490d67c..643dae777b43 100644 --- a/include/linux/mfd/max77686-private.h +++ b/include/linux/mfd/max77686-private.h @@ -437,14 +437,11 @@ enum max77686_irq { struct max77686_dev { struct device *dev; struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */ - struct i2c_client *rtc; /* slave addr 0x0c */ unsigned long type; struct regmap *regmap; /* regmap for mfd */ - struct regmap *rtc_regmap; /* regmap for rtc */ struct regmap_irq_chip_data *irq_data; - struct regmap_irq_chip_data *rtc_irq_data; int irq; struct mutex irqlock; -- cgit v1.2.3 From b3967067c273359c7462f4be9a887c3d1a515f49 Mon Sep 17 00:00:00 2001 From: Joshua Clayton Date: Fri, 5 Feb 2016 12:41:11 -0800 Subject: rtc: Add functions to set and read rtc offset A number of rtc devices, such as the NXP pcf2123 include a facility to adjust the clock in order to compensate for temperature or a crystal, capacitor, etc, that results in the rtc clock not running at exactly 32.768 kHz. Data sheets I have seen refer to this as a clock offset, and measure it in parts per million, however they often reference ppm to 2 digits of precision, which makes integer ppm less than ideal. We use parts per billion, which more than covers the precision needed and works nicely within 32 bits Signed-off-by: Joshua Clayton Signed-off-by: Alexandre Belloni --- include/linux/rtc.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 3359f0422c6b..b693adac853b 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -89,6 +89,8 @@ struct rtc_class_ops { int (*set_mmss)(struct device *, unsigned long secs); int (*read_callback)(struct device *, int data); int (*alarm_irq_enable)(struct device *, unsigned int enabled); + int (*read_offset)(struct device *, long *offset); + int (*set_offset)(struct device *, long offset); }; #define RTC_DEVICE_NAME_SIZE 20 @@ -208,6 +210,8 @@ void rtc_timer_init(struct rtc_timer *timer, void (*f)(void *p), void *data); int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer *timer, ktime_t expires, ktime_t period); void rtc_timer_cancel(struct rtc_device *rtc, struct rtc_timer *timer); +int rtc_read_offset(struct rtc_device *rtc, long *offset); +int rtc_set_offset(struct rtc_device *rtc, long offset); void rtc_timer_do_work(struct work_struct *work); static inline bool is_leap_year(unsigned int year) -- cgit v1.2.3