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  1. 12 Jul, 2012 7 commits
    • Rob Herring's avatar
      dt: add clock binding doc to primecell bindings · 260b6aa0
      Rob Herring authored 
      Add clock binding information for primecell peripherals. For most, a
clock input name of "apb_pclk" is required. Any primecell peripherals
which are different will need to be documented separately.
Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      260b6aa0
    • Grant Likely's avatar
      clk: add DT fixed-clock binding support · 015ba402
      Grant Likely authored 
      Add support for DT "fixed-clock" binding to the common fixed rate clock
support.
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
[Rob Herring] Rework and move into common clock infrastructure
Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      015ba402
    • Grant Likely's avatar
      clk: add DT clock binding support · 766e6a4e
      Grant Likely authored 
      Based on work 1st by Ben Herrenschmidt and Jeremy Kerr, then by Grant
Likely, this patch adds support to clk_get to allow drivers to retrieve
clock data from the device tree.

Platforms scan for clocks in DT with of_clk_init and a match table, and
the register a provider through of_clk_add_provider. The provider's
clk_src_get function will be called when a device references the
provider's OF node for a clock reference.

v6 (Rob Herring):
    - Return error values instead of NULL to match clock framework
      expectations

v5 (Rob Herring):
    - Move from drivers/of into common clock subsystem
    - Squashed "dt/clock: add a simple provider get function" and
      "dt/clock: add function to get parent clock name"
    - Rebase to 3.4-rc1
    - Drop CONFIG_OF_CLOCK and just use CONFIG_OF
    - Add missing EXPORT_SYMBOL to various functions
    - s/clock-output-name/clock-output-names/
    - Define that fixed-clock binding is a single output

v4 (Rob Herring):
    - Rework for common clk subsystem
    - Add of_clk_get_parent_name function

v3: - Clarified documentation

v2: - fixed errant ';' causing compile error
    - Editorial fixes from Shawn Guo
    - merged in adding lookup to clkdev
    - changed property names to match established convention. After
      working with the binding a bit it really made more sense to follow the
      lead of 'reg', 'gpios' and 'interrupts' by making the input simply
      'clocks' & 'clock-names' instead of 'clock-input-*', and to only use
      clock-output* for the producer nodes. (Sorry Shawn, this will mean
      you need to change some code, but it should be trivial)
    - Add ability to inherit clocks from parent nodes by using an empty
      'clock-ranges' property.  Useful for busses.  I could use some feedback
      on the new property name, 'clock-ranges' doesn't feel right to me.
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Reviewed-by: default avatarShawn Guo <shawn.guo@freescale.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      766e6a4e
    • Linus Walleij's avatar
      ARM: integrator: convert to common clock · a613163d
      Linus Walleij authored 
      This converts the Integrator platform to use common clock
and the ICST driver. Since from this point not all ARM
reference platforms use the clock, we define
CONFIG_PLAT_VERSATILE_CLOCK and select it for all platforms
except the Integrator.

Open issue: I could not use the .init_early() field of the
machine descriptor to initialize the clocks, but had to
move them to .init_irq(), so presumably .init_early() is
so early that common clock is not up, and .init_machine()
is too late since it's needed for the clockevent/clocksource
initialization. Any suggestions on how to solve this is
very welcome.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: use 'select' instead of versatile Kconfig]
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      a613163d
    • Linus Walleij's avatar
      clk: add versatile ICST307 driver · 91b87a47
      Linus Walleij authored 
      The ICST307 VCO clock has a shared driver in the ARM
architecture. This patch provides a wrapper into the common
clock framework so we can use the implementation in the
ARM architecture without duplicating the code until all
ARM platforms using this VCO are moved over. At that point
we can merge the driver from the ARM platform into the
generic file altogether.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mike Turquette <mturquette@ti.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: removed versatile Kconfig]
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      91b87a47
    • Linus Walleij's avatar
      ARM: integrator: put symbolic bus names on devices · d59fdcfc
      Linus Walleij authored 
      All the Integrator devices have bus names like "mb:16" which
I think means "memory base 0x16000000" which is where the
UART0 is. So let's call it "uart0" because that's what most
platforms do these days.

Change this everywhere for the integrator as we prepare for
some core clock code movement.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      d59fdcfc
    • Mike Turquette's avatar
      Merge branch 'clk/mxs-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2.6 into clk-3.6 · cb479129
      Mike Turquette authored
      cb479129
  3. 11 Jul, 2012 7 commits
    • Linus Walleij's avatar
      ARM: u300: convert to common clock · 50667d63
      Linus Walleij authored 
      This converts the U300 clock implementation over to use the common
struct clk and moves the implementation down into drivers/clk.
Since VCO isn't used in tree it was removed, it's not hard to
put it back in if need be.
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: trivial Makefile conflict]
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      50667d63
    • Rajendra Nayak's avatar
      clk: cache parent clocks only for muxes · 9ca1c5a4
      Rajendra Nayak authored 
      caching parent clocks makes sense only when a clock has more
than one parent (mux clocks).
Avoid doing this for every other clock.
Signed-off-by: default avatarRajendra Nayak <rnayak@ti.com>
[mturquette@linaro.org: removed extra parentheses]
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      9ca1c5a4
    • Mark Brown's avatar
      clk: wm831x: Add initial WM831x clock driver · f05259a6
      Mark Brown authored 
      The WM831x and WM832x series of PMICs contain a flexible clocking
subsystem intended to provide always on and system core clocks.  It
features:

- A 32.768kHz crystal oscillator which can optionally be used to pass
  through an externally generated clock.
- A FLL which can be clocked from either the 32.768kHz oscillator or
  the CLKIN pin.
- A CLKOUT pin which can bring out either the oscillator or the FLL
  output.
- The 32.768kHz clock can also optionally be brought out on the GPIO
  pins of the device.

This driver fully supports the 32.768kHz oscillator and CLKOUT.  The FLL
is supported only in AUTO mode, the full flexibility of the FLL cannot
currently be used.

Due to a lack of access to systems where the core SoC has been converted
to use the generic clock API this driver has been compile tested only.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      f05259a6
    • Mark Brown's avatar
      clk: Constify struct clk_init_data · dc4cd941
      Mark Brown authored 
      Allow drivers to declare their clk_init_data const, the framework really
shouldn't be modifying the data.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      dc4cd941
    • Rajendra Nayak's avatar
      clk: Add CLK_IS_BASIC flag to identify basic clocks · f7d8caad
      Rajendra Nayak authored 
      Most platforms end up using a mix of basic clock types and
some which use clk_hw_foo struct for filling in custom platform
information when the clocks don't fit into basic types supported.

In platform code, its useful to know if a clock is using a basic
type or clk_hw_foo, which helps platforms know if they can
safely use to_clk_hw_foo to derive the clk_hw_foo pointer from
clk_hw.

Mark all basic clocks with a CLK_IS_BASIC flag.
Signed-off-by: default avatarRajendra Nayak <rnayak@ti.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      f7d8caad
    • Rajendra Nayak's avatar
      clk: Add support for rate table based dividers · 357c3f0a
      Rajendra Nayak authored 
      Some divider clks do not have any obvious relationship
between the divider and the value programmed in the
register. For instance, say a value of 1 could signify divide
by 6 and a value of 2 could signify divide by 4 etc.
Also there are dividers where not all values possible
based on the bitfield width are valid. For instance
a 3 bit wide bitfield can be used to program a value
from 0 to 7. However its possible that only 0 to 4
are valid values.

All these cases need the platform code to pass a simple
table of divider/value tuple, so the framework knows
the exact value to be written based on the divider
calculation and can also do better error checking.

This patch adds support for such rate table based
dividers and as part of the support adds a new
registration function 'clk_register_divider_table()'
and a new macro for static definition
'DEFINE_CLK_DIVIDER_TABLE'.
Signed-off-by: default avatarRajendra Nayak <rnayak@ti.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      357c3f0a
    • Rajendra Nayak's avatar
      clk: Add support for power of two type dividers · 6d9252bd
      Rajendra Nayak authored 
      Quite often dividers and the value programmed in the
register have a relation of 'power of two', something like
value	div
0	1
1	2
2	4
3	8...

Add support for such dividers as part of clk-divider.

The clk-divider flag 'CLK_DIVIDER_POWER_OF_TWO' should be used
to define such clocks.
Signed-off-by: default avatarRajendra Nayak <rnayak@ti.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
      6d9252bd
  5. 08 Jul, 2012 3 commits
  7. 07 Jul, 2012 2 commits
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm · cd6407fe
      Linus Torvalds authored 
      Pull ARM fixes from Russell King:
 "Last merge window, we had some updates from Al cleaning up the signal
  restart handling.  These have caused some problems on ARM, and while
  Al has some fixes, we have some concerns with Al's patches but we've
  been unsuccesful with discussing this.

  We have got to the point where we need to do something, and we've
  decided that the best solution is to revert the appropriate commits
  until Al is able to reply to us.

  Also included here are four patches to fix warnings that I've noticed
  in my build system, and one fix for kprobes test code."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: fix warning caused by wrongly typed arm_dma_limit
  ARM: fix warnings about atomic64_read
  ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
  ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
  ARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"
  ARM: 7442/1: Revert "remove unused restart trampoline"
  ARM: fix set_domain() macro
  ARM: fix mach-versatile/pci.c warning
      cd6407fe
    • Andy Lutomirski's avatar
      security: Minor improvements to no_new_privs documentation · c540521b
      Andy Lutomirski authored 
      The documentation didn't actually mention how to enable no_new_privs.
This also adds a note about possible interactions between
no_new_privs and LSMs (i.e. why teaching systemd to set no_new_privs
is not necessarily a good idea), and it references the new docs
from include/linux/prctl.h.
Suggested-by: default avatarRob Landley <rob@landley.net>
Signed-off-by: default avatarAndy Lutomirski <luto@amacapital.net>
Acked-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarJames Morris <james.l.morris@oracle.com>
      c540521b
  9. 06 Jul, 2012 11 commits
  11. 05 Jul, 2012 10 commits
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