Merge tag 'rtc-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/g…

…it/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Core:
   - Coding style and whitespace fixes (interface, Makefile and Kconfig)
   - New rtc_tm_sub() helper
   - New CONFIG_RTC_SYSTOHC_DEVICE option
   - Removed rtc_set_mmss()

  New drivers:
   - Mediatek MT6397
   - Cortina Gemini

  Drivers:
   - Year 2106 fixes for isl1208, pcf8563 and sunxi
   - update author email for at32ap700x and efi
   - ds1307: alarm fix
   - efi: use correct EFI 'epoch'
   - hym8563: make irq optional
   - imxdi: cleanups and better handling of the security/tamper monitoring
   - snvs: fix wakealarm
   - Compilation fixes or warning removal for gemini, mt6397, palmas, pfc8563
   - Trivial cleanups for ab8500, ds1216, ds1286, ds1672, ep93xx,
     hid-sensor-time, max6900, max8998, max77686, max77802, mc13xxx, mv,
     mxc, s3c, spear, v3020
   - Kconfig fixes for stmp3xxx and xgene"

* tag 'rtc-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (48 commits)
  rtc: remove useless I2C dependencies
  rtc: whitespace fixes
  rtc: Properly sort Makefile
  MAINTAINERS: Add RTC subsystem repository
  rtc: pfc8563: fix uninitialized variable warning
  rtc: ds1307: Enable the mcp794xx alarm after programming time
  rtc: hym8563: make the irq optional
  rtc: gemini: fix cocci warnings
  rtc: mv: correct 24 hour error message
  rtc: mv: use BIT()
  rtc: efi: use correct EFI 'epoch'
  rtc: interface: Remove rtc_set_mmss()
  sparc: time: Replace update_persistent_clock() with CONFIG_RTC_SYSTOHC
  rtc: NTP: Add CONFIG_RTC_SYSTOHC_DEVICE for NTP synchronization
  rtc: sunxi: Replace deprecated rtc_tm_to_time()
  rtc: isl1208: Replace deprecated rtc_tm_to_time()
  rtc: Introduce rtc_tm_sub() helper function
  rtc: pcf8563: Replace deprecated rtc_time_to_tm() and rtc_tm_to_time()
  rtc: palmas: Initialise bb_charging flag before using it
  rtc: simplify use of devm_ioremap_resource
  ...

Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt

@@ -6,11 +6,11 @@ as well as a clock output of up to 32kHz.
 Required properties:
 - compatible: should be: "haoyu,hym8563"
 - reg: i2c address
-- interrupts: rtc alarm/event interrupt
 - #clock-cells: the value should be 0
 
 Optional properties:
 - clock-output-names: From common clock binding
+- interrupts: rtc alarm/event interrupt
 
 Example:
 

MAINTAINERS

@@ -984,6 +984,7 @@ L:	[email protected] (moderated for non-subscribers)
 T:	git git://github.com/ulli-kroll/linux.git
 S:	Maintained
 F:	arch/arm/mach-gemini/
+F:	drivers/rtc/rtc-gemini.c
 
 ARM/CSR SIRFPRIMA2 MACHINE SUPPORT
 M:	Barry Song <[email protected]>
@@ -1243,6 +1244,13 @@ W:	http://www.digriz.org.uk/ts78xx/kernel
 S:	Maintained
 F:	arch/arm/mach-orion5x/ts78xx-*
 
+ARM/Mediatek RTC DRIVER
+M:	Eddie Huang <[email protected]>
+L:	[email protected] (moderated for non-subscribers)
+L:	[email protected] (moderated for non-subscribers)
+S:	Maintained
+F:	drivers/rtc/rtc-mt6397.c
+
 ARM/Mediatek SoC support
 M:	Matthias Brugger <[email protected]>
 L:	[email protected] (moderated for non-subscribers)
@@ -8380,6 +8388,7 @@ M:	Alessandro Zummo <[email protected]>
 M:	Alexandre Belloni <[email protected]>
 L:	[email protected]
 Q:	http://patchwork.ozlabs.org/project/rtc-linux/list/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git
 S:	Maintained
 F:	Documentation/rtc.txt
 F:	drivers/rtc/

arch/sparc/Kconfig

@@ -25,6 +25,7 @@ config SPARC
 	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select RTC_CLASS
 	select RTC_DRV_M48T59
+	select RTC_SYSTOHC
 	select HAVE_DMA_ATTRS
 	select HAVE_DMA_API_DEBUG
 	select HAVE_ARCH_JUMP_LABEL if SPARC64
@@ -35,7 +36,6 @@ config SPARC
 	select HAVE_BPF_JIT
 	select HAVE_DEBUG_BUGVERBOSE
 	select GENERIC_SMP_IDLE_THREAD
-	select GENERIC_CMOS_UPDATE
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_STRNCPY_FROM_USER
 	select GENERIC_STRNLEN_USER

arch/sparc/kernel/time_32.c

@@ -23,7 +23,6 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/time.h>
-#include <linux/rtc.h>
 #include <linux/rtc/m48t59.h>
 #include <linux/timex.h>
 #include <linux/clocksource.h>
@@ -65,8 +64,6 @@ DEFINE_PER_CPU(struct clock_event_device, sparc32_clockevent);
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL(rtc_lock);
 
-static int set_rtc_mmss(unsigned long);
-
 unsigned long profile_pc(struct pt_regs *regs)
 {
 	extern char __copy_user_begin[], __copy_user_end[];
@@ -87,11 +84,6 @@ EXPORT_SYMBOL(profile_pc);
 
 volatile u32 __iomem *master_l10_counter;
 
-int update_persistent_clock(struct timespec now)
-{
-	return set_rtc_mmss(now.tv_sec);
-}
-
 irqreturn_t notrace timer_interrupt(int dummy, void *dev_id)
 {
 	if (timer_cs_enabled) {
@@ -362,16 +354,3 @@ void __init time_init(void)
 		sbus_time_init();
 }
 
-
-static int set_rtc_mmss(unsigned long secs)
-{
-	struct rtc_device *rtc = rtc_class_open("rtc0");
-	int err = -1;
-
-	if (rtc) {
-		err = rtc_set_mmss(rtc, secs);
-		rtc_class_close(rtc);
-	}
-
-	return err;
-}

arch/sparc/kernel/time_64.c

@@ -28,7 +28,6 @@
 #include <linux/cpufreq.h>
 #include <linux/percpu.h>
 #include <linux/miscdevice.h>
-#include <linux/rtc.h>
 #include <linux/rtc/m48t59.h>
 #include <linux/kernel_stat.h>
 #include <linux/clockchips.h>
@@ -394,19 +393,6 @@ static struct sparc64_tick_ops hbtick_operations __read_mostly = {
 
 static unsigned long timer_ticks_per_nsec_quotient __read_mostly;
 
-int update_persistent_clock(struct timespec now)
-{
-	struct rtc_device *rtc = rtc_class_open("rtc0");
-	int err = -1;
-
-	if (rtc) {
-		err = rtc_set_mmss(rtc, now.tv_sec);
-		rtc_class_close(rtc);
-	}
-
-	return err;
-}
-
 unsigned long cmos_regs;
 EXPORT_SYMBOL(cmos_regs);
 

drivers/mfd/mt6397-core.c

@@ -21,9 +21,27 @@
 #include <linux/mfd/mt6397/core.h>
 #include <linux/mfd/mt6397/registers.h>
 
+#define MT6397_RTC_BASE		0xe000
+#define MT6397_RTC_SIZE		0x3e
+
+static const struct resource mt6397_rtc_resources[] = {
+	{
+		.start = MT6397_RTC_BASE,
+		.end   = MT6397_RTC_BASE + MT6397_RTC_SIZE,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MT6397_IRQ_RTC,
+		.end   = MT6397_IRQ_RTC,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
 static const struct mfd_cell mt6397_devs[] = {
 	{
 		.name = "mt6397-rtc",
+		.num_resources = ARRAY_SIZE(mt6397_rtc_resources),
+		.resources = mt6397_rtc_resources,
 		.of_compatible = "mediatek,mt6397-rtc",
 	}, {
 		.name = "mt6397-regulator",

drivers/rtc/Kconfig

@@ -12,7 +12,7 @@ menuconfig RTC_CLASS
 	select RTC_LIB
 	help
 	  Generic RTC class support. If you say yes here, you will
- 	  be allowed to plug one or more RTCs to your system. You will
+	  be allowed to plug one or more RTCs to your system. You will
 	  probably want to enable one or more of the interfaces below.
 
 if RTC_CLASS
@@ -25,17 +25,9 @@ config RTC_HCTOSYS
 	  the value read from a specified RTC device. This is useful to avoid
 	  unnecessary fsck runs at boot time, and to network better.
 
-config RTC_SYSTOHC
-	bool "Set the RTC time based on NTP synchronization"
-	default y
-	help
-	  If you say yes here, the system time (wall clock) will be stored
-	  in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
-	  minutes if userspace reports synchronized NTP status.
-
 config RTC_HCTOSYS_DEVICE
 	string "RTC used to set the system time"
-	depends on RTC_HCTOSYS = y || RTC_SYSTOHC = y
+	depends on RTC_HCTOSYS
 	default "rtc0"
 	help
 	  The RTC device that will be used to (re)initialize the system
@@ -56,6 +48,25 @@ config RTC_HCTOSYS_DEVICE
 	  sleep states. Do not specify an RTC here unless it stays powered
 	  during all this system's supported sleep states.
 
+config RTC_SYSTOHC
+	bool "Set the RTC time based on NTP synchronization"
+	default y
+	help
+	  If you say yes here, the system time (wall clock) will be stored
+	  in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
+	  minutes if userspace reports synchronized NTP status.
+
+config RTC_SYSTOHC_DEVICE
+	string "RTC used to synchronize NTP adjustment"
+	depends on RTC_SYSTOHC
+	default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
+	default "rtc0"
+	help
+	  The RTC device used for NTP synchronization. The main difference
+	  between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
+	  one can sleep when setting time, because it runs in the workqueue
+	  context.
+
 config RTC_DEBUG
 	bool "RTC debug support"
 	help
@@ -135,7 +146,7 @@ if I2C
 
 config RTC_DRV_88PM860X
 	tristate "Marvell 88PM860x"
-	depends on I2C && MFD_88PM860X
+	depends on MFD_88PM860X
 	help
 	  If you say yes here you get support for RTC function in Marvell
 	  88PM860x chips.
@@ -145,7 +156,7 @@ config RTC_DRV_88PM860X
 
 config RTC_DRV_88PM80X
 	tristate "Marvell 88PM80x"
-	depends on I2C && MFD_88PM800
+	depends on MFD_88PM800
 	help
 	  If you say yes here you get support for RTC function in Marvell
 	  88PM80x chips.
@@ -154,10 +165,9 @@ config RTC_DRV_88PM80X
 	  will be called rtc-88pm80x.
 
 config RTC_DRV_ABB5ZES3
-       depends on I2C
-       select REGMAP_I2C
-       tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
-       help
+	select REGMAP_I2C
+	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
+	help
 	  If you say yes here you get support for the Abracon
 	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
 
@@ -204,7 +214,6 @@ config RTC_DRV_DS1307
 
 config RTC_DRV_DS1374
 	tristate "Dallas/Maxim DS1374"
-	depends on I2C
 	help
 	  If you say yes here you get support for Dallas Semiconductor
 	  DS1374 real-time clock chips. If an interrupt is associated
@@ -232,7 +241,6 @@ config RTC_DRV_DS1672
 
 config RTC_DRV_DS3232
 	tristate "Dallas/Maxim DS3232"
-	depends on I2C
 	help
 	  If you say yes here you get support for Dallas Semiconductor
 	  DS3232 real-time clock chips. If an interrupt is associated
@@ -243,7 +251,7 @@ config RTC_DRV_DS3232
 
 config RTC_DRV_HYM8563
 	tristate "Haoyu Microelectronics HYM8563"
-	depends on I2C && OF
+	depends on OF
 	help
 	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
 	  from the usual rtc functions it provides a clock output of
@@ -365,10 +373,9 @@ config RTC_DRV_ISL12022
 	  will be called rtc-isl12022.
 
 config RTC_DRV_ISL12057
-       depends on I2C
-       select REGMAP_I2C
-       tristate "Intersil ISL12057"
-       help
+	select REGMAP_I2C
+	tristate "Intersil ISL12057"
+	help
 	  If you say yes here you get support for the Intersil ISL12057
 	  I2C RTC chip.
 
@@ -603,13 +610,13 @@ comment "SPI RTC drivers"
 if SPI_MASTER
 
 config RTC_DRV_M41T93
-        tristate "ST M41T93"
-        help
-          If you say yes here you will get support for the
-          ST M41T93 SPI RTC chip.
+	tristate "ST M41T93"
+	help
+	  If you say yes here you will get support for the
+	  ST M41T93 SPI RTC chip.
 
-          This driver can also be built as a module. If so, the module
-          will be called rtc-m41t93.
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-m41t93.
 
 config RTC_DRV_M41T94
 	tristate "ST M41T94"
@@ -1200,7 +1207,7 @@ config RTC_DRV_SH
 	  Say Y here to enable support for the on-chip RTC found in
 	  most SuperH processors.
 
- 	  To compile this driver as a module, choose M here: the
+	  To compile this driver as a module, choose M here: the
 	  module will be called rtc-sh.
 
 config RTC_DRV_VR41XX
@@ -1299,14 +1306,14 @@ config RTC_DRV_GENERIC
 	  just say Y.
 
 config RTC_DRV_PXA
-       tristate "PXA27x/PXA3xx"
-       depends on ARCH_PXA
-       help
-         If you say Y here you will get access to the real time clock
-         built into your PXA27x or PXA3xx CPU.
+	tristate "PXA27x/PXA3xx"
+	depends on ARCH_PXA
+	help
+	 If you say Y here you will get access to the real time clock
+	 built into your PXA27x or PXA3xx CPU.
 
-         This RTC driver uses PXA RTC registers available since pxa27x
-         series (RDxR, RYxR) instead of legacy RCNR, RTAR.
+	 This RTC driver uses PXA RTC registers available since pxa27x
+	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
 
 config RTC_DRV_VT8500
 	tristate "VIA/WonderMedia 85xx SoC RTC"
@@ -1372,6 +1379,17 @@ config RTC_DRV_ARMADA38X
 	  This driver can also be built as a module. If so, the module
 	  will be called armada38x-rtc.
 
+config RTC_DRV_GEMINI
+	tristate "Gemini SoC RTC"
+	depends on ARCH_GEMINI || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  If you say Y here you will get support for the
+	  RTC found on Gemini SoC's.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-gemini.
+
 config RTC_DRV_PS3
 	tristate "PS3 RTC"
 	depends on PPC_PS3
@@ -1396,6 +1414,7 @@ config RTC_DRV_COH901331
 config RTC_DRV_STMP
 	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
 	depends on ARCH_MXS
+	select STMP_DEVICE
 	help
 	  If you say yes here you will get support for the onboard
 	  STMP3xxx/i.MX23/i.MX28 RTC.
@@ -1541,9 +1560,20 @@ config RTC_DRV_MOXART
 	   This driver can also be built as a module. If so, the module
 	   will be called rtc-moxart
 
+config RTC_DRV_MT6397
+	tristate "Mediatek Real Time Clock driver"
+	depends on MFD_MT6397 || COMPILE_TEST
+	help
+	  This selects the Mediatek(R) RTC driver. RTC is part of Mediatek
+	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
+	  Mediatek(R) RTC driver.
+
+	  If you want to use Mediatek(R) RTC interface, select Y or M here.
+
 config RTC_DRV_XGENE
 	tristate "APM X-Gene RTC"
 	depends on HAS_IOMEM
+	depends on ARCH_XGENE || COMPILE_TEST
 	help
 	  If you say yes here you get support for the APM X-Gene SoC real time
 	  clock.