linux-stable.git/drivers/rtc/rtc-pl031.c, branch linux-3.8.y

drivers/rtc/rtc-pl031.c: restore ST variant functionality

2013-02-12T22:34:00+00:00

Commit e7e034e18a0a ("drivers/rtc/rtc-pl031.c: fix the missing operation
on enable") accidentally broke the ST variants of PL031.

The bit that is being poked as "clockwatch" enable bit for the ST
variants does the work of bit 0 on this variant.  Bit 0 is used for a
clock divider on the ST variants, and setting it to 1 will affect
timekeeping in a very bad way.

Signed-off-by: Linus Walleij 
Acked-by: Haojian Zhuang 
Cc: Mian Yousaf KAUKAB 
Cc: Srinidhi Kasagar 
Cc: Alessandro Zummo 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: fix the missing operation on enable

2013-02-05T09:38:49+00:00

The RTC control register should be enabled in the process of
initializing.

Without this patch, I failed to enable RTC in Hisilicon Hi3620 SoC.  The
register mapping section in RTC is always read as zero.  So I doubt that
ST guys may already enable this register in bootloader.  So they won't
meet this issue.

Signed-off-by: Haojian Zhuang 
Cc: Srinidhi Kasagar 
Cc: Linus Walleij 
Cc: Alessandro Zummo 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: pl031: fix up IRQ flags

2012-07-31T00:25:18+00:00

The pl031 interrupt is shared between the timer part and the clockwatch
part of the same HW block on the ux500, so mark it IRQF_SHARED on this
variant.

This patch also adds the IRQF_NO_SUSPEND flag to the rtc irq on all
variants as we don't want this pretty important IRQ to be disabled in
suspend.

Signed-off-by: Mattias Wallin 
Signed-off-by: Linus Walleij 
Reviewed-by: Rickard Andersson 
Reviewed-by: Jonas Aberg 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: pl031: use per-vendor variables for special init

2012-07-31T00:25:18+00:00

Instead of hard-checking for certain vendor codes, follow the pattern of
other AMBA (PrimeCell) drivers and use variables in the vendor data.
Get rid of the locally cached vendor and hardware revision since we
already have the nice vendor data variable in the state.

Signed-off-by: Linus Walleij 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: pl031: encapsulate per-vendor ops

2012-07-31T00:25:18+00:00

Move the per-vendor operations for this RTC into a encapsulating struct so
we can have more per-vendor variables than just the ops.

Signed-off-by: Linus Walleij 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: remove RTC timer interrupt handling

2012-05-29T23:22:34+00:00

Remove RTT interrupt handling, since PIE mode interrupts are now better
emulated in generic code via an hrtimer we have no need for this, and
there is no codepath in the driver that enables these periodic interrupts
anyway.

Signed-off-by: Rajkumar Kasirajan 
Signed-off-by: Linus Walleij 
Cc: Mattias Wallin 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01

2012-05-18T01:00:51+00:00

The reset date of the ST Micro version of PL031 is 2000-01-01.  The
correct weekday for 2000-01-01 is saturday, but pl031 is initialized to
sunday.  This may lead to alarm malfunction, so configure the correct
wday if RTC_DR indicates reset.

Signed-off-by: Rajkumar Kasirajan 
Signed-off-by: Linus Walleij 
Cc: Mattias Wallin 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: enable clock on all ST variants

2012-04-12T20:12:12+00:00

The ST variants of the PL031 all require bit 26 in the control register
to be set before they work properly.  Discovered this when testing on
the Nomadik board where it would suprisingly just stand still.

Signed-off-by: Linus Walleij 
Cc: Mian Yousaf Kaukab 
Cc: Alessandro Rubini 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'amba' of git://git.linaro.org/people/rmk/linux-arm

2012-03-24T00:36:29+00:00

Pull #2 ARM updates from Russell King:
 "Further ARM AMBA primecell updates which aren't included directly in
  the previous commit.  I wanted to keep these separate as they're
  touching stuff outside arch/arm/."

* 'amba' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7362/1: AMBA: Add module_amba_driver() helper macro for amba_driver
  ARM: 7335/1: mach-u300: do away with MMC config files
  ARM: 7280/1: mmc: mmci: Cache MMCICLOCK and MMCIPOWER register
  ARM: 7309/1: realview: fix unconnected interrupts on EB11MP
  ARM: 7230/1: mmc: mmci: Fix PIO read for small SDIO packets
  ARM: 7227/1: mmc: mmci: Prepare for SDIO before setting up DMA job
  ARM: 7223/1: mmc: mmci: Fixup use of runtime PM and use autosuspend
  ARM: 7221/1: mmc: mmci: Change from using legacy suspend
  ARM: 7219/1: mmc: mmci: Change vdd_handler to a generic ios_handler
  ARM: 7218/1: mmc: mmci: Provide option to configure bus signal direction
  ARM: 7217/1: mmc: mmci: Put power register deviations in variant data
  ARM: 7216/1: mmc: mmci: Do not release spinlock in request_end
  ARM: 7215/1: mmc: mmci: Increase max_segs from 16 to 128

drivers/rtc: remove IRQF_DISABLED

2012-03-23T23:58:39+00:00

Since commit e58aa3d2d0cc ("genirq: run irq handlers with interrupts
disabled") we run all interrupt handlers with interrupts disabled and we
even check and yell when an interrupt handler returns with interrupts
enabled - see commit b738a50a2026 ("genirq: warn when handler enables
interrupts").

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang 
Acked-by: Linus Walleij 
Acked-by: Wan ZongShun 
Cc: Alessandro Zummo 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds