19 Dec, 2011
1 commit
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sched_clock() is yet another blocker on the road to the single
image. This patch implements an idea by Russell King:http://www.spinics.net/lists/linux-omap/msg49561.html
Instead of asking the platform to implement both sched_clock()
itself and the rollover callback, simply register a read()
function, and let the ARM code care about sched_clock() itself,
the conversion to ns and the rollover. sched_clock() uses
this read() function as an indirection to the platform code.
If the platform doesn't provide a read(), the code falls back
to the jiffy counter (just like the default sched_clock).This allow some simplifications and possibly some footprint gain
when multiple platforms are compiled in. Among the drawbacks,
the removal of the *_fixed_sched_clock optimization which could
negatively impact some platforms (sa1100, tegra, versatile
and omap).Tested on 11MPCore, OMAP4 and Tegra.
Cc: Imre Kaloz
Cc: Eric Miao
Cc: Colin Cross
Cc: Erik Gilling
Cc: Olof Johansson
Cc: Sascha Hauer
Cc: Alessandro Rubini
Cc: STEricsson
Cc: Lennert Buytenhek
Cc: Ben Dooks
Tested-by: Jamie Iles
Tested-by: Tony Lindgren
Tested-by: Kyungmin Park
Acked-by: Linus Walleij
Acked-by: Nicolas Pitre
Acked-by: Krzysztof Halasa
Acked-by: Kukjin Kim
Signed-off-by: Marc Zyngier
Signed-off-by: Russell King
17 Oct, 2011
1 commit
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This patch uses the new cpu_logical_map() macro for converting logical
CPU numbers into physical numbers when dealing with the pen_release
variable in the SMP boot and CPU hotplug paths.Signed-off-by: Will Deacon
23 May, 2011
1 commit
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Rather than having each platform class provide a mach/smp.h header for
smp_cross_call(), arrange for them to register the function with the
core ARM SMP code instead.Signed-off-by: Russell King
29 Mar, 2011
2 commits
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Use irq_set_chip_and_handler() instead. Converted with coccinelle.
Signed-off-by: Thomas Gleixner
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Convert to the new function names. Automated with coccinelle.
Signed-off-by: Thomas Gleixner
24 Feb, 2011
1 commit
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The current code support of dummy timers in absence of local
timer is compile time. This is an attempt to convert it to runtime
so that on few SOC version if the local timers aren't supported
kernel can switch to dummy timers. OMAP4430 ES1.0 does suffer from
this limitation.This patch should not have any functional impact on affected
files.Cc: Daniel Walker
Cc: Bryan Huntsman
Cc: Tony Lindgren
Cc: Kukjin Kim
Cc: Paul Mundt
Cc: Magnus Damm
Cc: Colin Cross
Cc: Erik Gilling
Cc: Srinidhi Kasagar
Cc: Linus Walleij
Signed-off-by: Santosh Shilimkar
Acked-by: David Brown
Signed-off-by: Russell King
19 Feb, 2011
6 commits
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Integrator/CP has the 24MHz counter which Versatile and later platforms
also have, which we use for sched_clock support. Allow this counter to
be used when building a kernel targetting Integrator/CP alone.
Integrator/AP does not have this counter, so we must exclude support
for the Integrator family when this is enabled.Acked-by: Catalin Marinas
Signed-off-by: Russell King -
Realview and Versatile Express share the same SMP bringup code, so
consolidate the two implementations.Acked-by: Catalin Marinas
Signed-off-by: Russell King -
Realview and Versatile Express local timer support is identical, so
consolidate the implementations.Acked-by: Catalin Marinas
Signed-off-by: Russell King -
Consolidate the FPGA IRQ handling code. Integrator/AP and Versatile
have one FPGA-based IRQ handler each. Integrator/CP has three.Acked-by: Catalin Marinas
Signed-off-by: Russell King -
Move leds and sched_clock build conditionals out of the Makefile into
the Kconfig file. Move selection of HAVE_SCHED_CLOCK into the
platform Kconfig rather than duplicating it three times in the main
architecture Kconfig.Acked-by: Catalin Marinas
Signed-off-by: Russell King -
This consolidates the CLCD panel definitions and memory allocation into
one location.Rename the Sanyo 2.5in and Epson 2.2in displays after their respective
part numbers. Rather than using a general "Sanyo 2.5in" and "Epson
2.2in" description of the display panel, use the manufacturers part
number to be more specific. This helps people identify what the timings
actually refer to, which are panel specific.While here, add CLCD capability information to each panel definition,
which has no effect until we add the board-level capabilities.Acked-by: Catalin Marinas
Signed-off-by: Russell King
06 Jan, 2011
1 commit
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Conflicts:
arch/arm/mach-vexpress/v2m.c
arch/arm/plat-omap/counter_32k.c
arch/arm/plat-versatile/Makefile
05 Jan, 2011
1 commit
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Add a sched_clock() implementation to Versatile Express using the new
sched_clock() infrastructure for extending 32bit counters to full
64-bit nanoseconds.Tested-by: Will Deacon
Signed-off-by: Russell King
23 Dec, 2010
3 commits
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Convert versatile platforms to use the new sched_clock() infrastructure
for extending 32bit counters to full 64-bit nanoseconds.Tested-by: Will Deacon
Signed-off-by: Russell King -
ftrace requires sched_clock() to be notrace. Ensure that all
implementations are so marked. Also make sure that they include
linux/sched.hAlso ensure OMAP clocksource read functions are marked notrace as
they're used for sched_clock() too.Tested-by: Santosh Shilimkar
Tested-by: Will Deacon
Tested-by: Mikael Pettersson
Tested-by: Eric Miao
Tested-by: Olof Johansson
Signed-off-by: Russell King -
In d7e81c2 (clocksource: Add clocksource_register_hz/khz interface) new
interfaces were added which simplify (and optimize) the selection of the
divisor shift/mult constants. Switch over to using this new interface.Tested-by: Will Deacon
Signed-off-by: Russell King
19 Nov, 2010
1 commit
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Include sched.h to ensure sched_clock() has the notrace
annotation.Signed-off-by: Rabin Vincent
04 Nov, 2010
1 commit
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From: Rob Herring
The timer-sp h/w used on versatile platforms can also be used for other
platforms, so move it to a common location.Signed-off-by: Rob Herring
Signed-off-by: Russell King
26 Jul, 2010
2 commits
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My attempt to make the LEDs only compile for RealView and
Versatile was futile: I missed the Versatile Express. So invert
the logic and explicitly include the platforms to compile for.Signed-off-by: Linus Walleij
Signed-off-by: Russell King -
This adds a simple driver supporting the new LED framework with
triggers and all for the RealView and Versatile platforms. The
RealView and Versatile platform drivers were arranged to compile
for all-but-integrator as a side effect since the Integrator has
a different LED driver.Signed-off-by: Linus Walleij
Signed-off-by: Russell King
02 May, 2010
6 commits
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Signed-off-by: Russell King
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Provide a common sched_clock() implementation for Versatile and
Realview.Signed-off-by: Russell King
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Signed-off-by: Russell King
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Realview/Versatile copied the Integrator timer code, including the
calculations for ensuring that the reload value fits into the 16-bit
counter. However, these platforms have a 32-bit counter which is
clocked at a slower rate.The result is that the preprocessor conditions are never triggered:
TICKS_PER_uSEC = 1, mSEC_10 = 10000, which is 0x2710 - less than
0x10000.So, remove the unnecessary complexity, reducing the TIMER_RELOAD
calculation to just:TICKS_PER_uSEC * mSEC_10
Signed-off-by: Russell King
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Signed-off-by: Russell King
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Signed-off-by: Russell King