linux-stable.git/drivers/rtc/rtc-pl031.c, branch linux-3.2.y

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

2013-03-06T03:23:55+00:00

commit 3399cfb5df9594495b876d1843a7165f77366b2b upstream.

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 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Ben Hutchings

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

2013-02-20T03:15:26+00:00

commit e7e034e18a0ab6bafb2425c3242cac311164f4d6 upstream.

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 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

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

2012-05-30T23:44:04+00:00

commit c0a5f4a05af588a0f9951f8d24e2564b09501918 upstream.

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 
Signed-off-by: Ben Hutchings

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

2012-04-22T22:30:59+00:00

commit 2f3972168353d355854d6381f1f360ce83b723e5 upstream.

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 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

Merge branches 'defcfg', 'drivers' and 'cyberpro-next' of master.kernel.org:/home/rmk/linux-2.6-arm

2011-03-18T01:48:35+00:00

* 'defcfg' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6647/1: add Versatile Express defconfig
  ARM: 6644/1: mach-ux500: update the U8500 defconfig

* 'drivers' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6764/1: pl011: factor out FIFO to TTY code
  ARM: 6763/1: pl011: add optional RX DMA to PL011 v2
  ARM: 6758/1: amba: support pm ops
  ARM: amba: make amba_driver id_table const
  ARM: amba: make internal ID table handling const
  ARM: amba: make probe() functions take const id tables
  ARM: 6662/1: amba: make amba_bustype non-static
  ARM: mmci: add dmaengine-based DMA support
  ARM: mmci: no need for separate host->data_xfered
  ARM: mmci: avoid unnecessary switch to data available PIO interrupts
  ARM: mmci: no need to call flush_dcache_page() with sg_miter API
  ARM: mmci: avoid reporting too many completed bytes on fifo overrun
  ALSA: AACI: make fifo variables more explanitory
  ALSA: AACI: no need to call snd_pcm_period_elapsed() for each period
  ALSA: AACI: use snd_pcm_lib_period_bytes()
  ALSA: AACI: clean up AACI announcement printk
  ALSA: AACI: fix channel mask selection
  ALSA: AACI: fix number of channels for record
  ALSA: AACI: fix multiple IRQ claiming

* 'cyberpro-next' of master.kernel.org:/home/rmk/linux-2.6-arm:
  VIDEO: cyberpro: remove unused cyber2000fb_get_fb_var()
  VIDEO: cyberpro: remove useless function extreg pointers
  VIDEO: cyberpro: update handling of device structures
  VIDEO: cyberpro: add support for video capture I2C
  VIDEO: cyberpro: make 'reg_b0_lock' always present
  VIDEO: cyberpro: add I2C support
  VIDEO: cyberpro: select lowest multipler/divisor for PLL

RTC: Cleanup rtc_class_ops->irq_set_freq()

2011-03-09T19:23:35+00:00

With the generic rtc code now emulating PIE mode irqs via an
hrtimer, no one calls the rtc_class_ops->irq_set_freq call.

This patch removes the hook and deletes the driver functions
if no one else calls them.

CC: Thomas Gleixner 
CC: Alessandro Zummo 
CC: Marcelo Roberto Jimenez 
CC: rtc-linux@googlegroups.com
Signed-off-by: John Stultz

RTC: Cleanup rtc_class_ops->irq_set_state

2011-03-09T19:23:34+00:00

With PIE mode interrupts now emulated in generic code via an hrtimer,
no one calls rtc_class_ops->irq_set_state(), so this patch removes it
along with driver implementations.

CC: Thomas Gleixner 
CC: Alessandro Zummo 
CC: Marcelo Roberto Jimenez 
CC: rtc-linux@googlegroups.com
Signed-off-by: John Stultz

ARM: amba: make probe() functions take const id tables

2011-02-23T16:24:14+00:00

Make Primecell driver probe functions take a const pointer to their
ID tables.  Drivers should never modify their ID tables in their
probe handler.

Signed-off-by: Russell King

drivers/rtc/rtc-pl031.c: do not mark PL031 IRQ as shared

2010-09-10T01:57:24+00:00

It was a mistake to mark the PL031 IRQ as shared (for the U8500),
we misread the datasheet. Get rid of this.

Signed-off-by: Linus Walleij 
Cc: Jonas Aberg 
Cc: Mian Yousaf Kaukab 
Acked-by: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: remove unused #include

2010-08-11T15:59:07+00:00

Signed-off-by: Huang Weiyi 
Acked-by: Wan ZongShun 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds