- May 17, 2010
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Will Deacon authored
The ARM perf-events framework provides support for a number of different PMUs using struct arm_pmu. The char *name field of this struct can be used to identify the PMU, but this is cumbersome if used outside of perf. This patch replaces the name string for a PMU with an enum, which holds a unique ID for the PMU being represented. This ID can be used to index an array of names within perf, so no functionality is lost. The presence of the ID field, allows other kernel subsystems [currently oprofile] to use their own mappings for the PMU name. Cc: Jean Pihet <jpihet@mvista.com> Acked-by:
Jamie Iles <jamie.iles@picochip.com> Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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Will Deacon authored
The current PMU infrastructure for ARM requires that the IRQs for the PMU device are fixed at compile time and are selected based on the ARCH_ or MACH_ flags. This has the disadvantage of tying the Kernel down to a particular board as far as profiling is concerned. This patch replaces the compile-time IRQ registration with a runtime mechanism which allows the IRQs to be registered with the framework as a platform_device. A further advantage of this change is that there is scope for registering different types of performance counters in the future by changing the id of the platform_device and attaching different resources to it. Acked-by:
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Russell King authored
Merge branches 'at91', 'bcmring', 'ep93xx', 'iop', 'misc', 'nomadik', 'omap', 'pxa', 'spear' and 'versatile' into devel Conflicts: arch/arm/Makefile arch/arm/common/Makefile arch/arm/mm/Kconfig
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Russell King authored
Provide a configuration option to allow the ARMv6 to use normal bufferable memory for coherent DMA. This option is forced to 'y' for ARMv7, and offered as a configuration option on ARMv6. Enabling this option requires drivers to have the necessary barriers to ensure that data in DMA coherent memory is visible prior to the DMA operation commencing. Reviewed-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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- May 15, 2010
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Kirill A. Shutemov authored
Between "clean D line..." and "invalidate I line" operations in v7_coherent_user_range(), the memory page may get swapped out. And the fault on "invalidate I line" could not be properly handled causing the oops. In ARMv6 "external abort on linefetch" replaced by "instruction cache maintenance fault". Let's handle it as translation fault. It fixes the issue. I'm not sure if it's reasonable to check arch version in run-time. Let's do it in compile time for now. Reviewed-by:
Siarhei Siamashka <siarhei.siamashka@nokia.com> Signed-off-by:
Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by:
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Russell King authored
Enabling CONFIG_USER_DEBUG allows NWFPE to complain about every FP exception, which with some programs can cause the kernel message log to fill with NWFPE debug, swamping out other messages. This change allows NWFPE debugging to be configured at run time. Signed-off-by: -
Russell King authored
Consistently name all SMP platform related functions. Signed-off-by: -
Jassi Brar authored
PL330 is a configurable DMA controller PrimeCell device. The register map of the device is well defined. The configuration of a particular implementation can be read from the six configuration registers CR0-4,Dn. This patch implements a driver for the specification:- http://infocenter.arm.com/help/topic/com.arm.doc.ddi0424a/DDI0424A_dmac_pl330_r0p0_trm.pdf The exported interface should be sufficient to implement a driver for any DMA API. Signed-off-by:
Jassi Brar <jassisinghbrar@gmail.com> Signed-off-by:
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Jason McMullan authored
The L310 cache controller's interface is almost identical to the L210. One major difference is that the PL310 can have up to 16 ways. This change uses the cache's part ID and the Associativity bits in the AUX_CTRL register to determine the number of ways. Also, this version prints out the CACHE_ID and AUX_CTRL registers. Acked-by:
Jason S. McMullan <jason.mcmullan@netronome.com> Signed-off-by:
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Russell King authored
Acked-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
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Russell King authored
Acked-by:
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Russell King authored
These files include linux/bootmem.h without using anything from this file; remove the unnecessary include. Acked-by:
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Alexey Dobriyan authored
Convert code away from ->read_proc/->write_proc interfaces. Switch to proc_create()/proc_create_data() which makes addition of proc entries reliable wrt NULL ->proc_fops, NULL ->data and so on. Problem with ->read_proc et al is described here commit 786d7e16 "Fix rmmod/read/write races in /proc entries" This patch is part of an effort to remove the old simple procfs PAGE_SIZE buffer interface. Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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FUJITA Tomonori authored
Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by:
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- May 13, 2010
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Linus Walleij authored
This provides some serious scheduling for the Nomadik family by introducing a sched_clock() using the MTU clock source in the same manner as e.g. OMAP or U300. This type of solutions has been discussed at no end in the past, however we need this resolution for making measurements and using HRTimers. Signed-off-by:
Linus Walleij <linus.walleij@stericsson.com> Signed-off-by:
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Mika Westerberg authored
This patch adds platform side support code for the EP93xx SPI driver. This includes clock, resources and muxing. There is a new function: ep93xx_register_spi() which can be used by board support code to register new SPI devices for the board. This patch depends on patch 5998/1 ep93xx: added chip revision reading function Cc: Ryan Mallon <ryan@bluewatersys.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
Mika Westerberg <mika.westerberg@iki.fi> Acked-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by:
Martin Guy <martinwguy@gmail.com> Signed-off-by:
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- May 06, 2010
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Rabin Vincent authored
Add clocks with appropriate names in platforms that use it, and use the clk API in nomadik-gpio. Acked-by:
Alessandro Rubini <rubini@unipv.it> Acked-by:
Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by:
Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by:
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Rabin Vincent authored
Add a table for clocks to be defined statically, so that new clocks can be added without having to call nmdk_clk_create() for each of them. Remove the now unused nmdk_clk_create() function. Acked-by:
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Rabin Vincent authored
Set a default trigger type for interrupts, otherwise if request_irq is called without specifiying a trigger type, the interrupt will not actually be enabled. Acked-by:
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Rabin Vincent authored
On this peripheral, setting the trigger type enables the interrupt, and the current set_type() implementation unconditionally enables the interrupt, even if it is called when the interrupt is disabled. Fix set_type() to: - if the interrupt is disabled, defer the actual trigger setting to when it is unmasked - if the interrupt is enabled, change the type immediately by clearing the old type and then re-enabling with the new type. Acked-by:
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Rabin Vincent authored
Remove some nearly-duplicated code to make the following patch simpler. Acked-by:
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Rabin Vincent authored
Mask/unmask should modify the interrupt mask register (RIMSC and FIMSC) not the wakeup mask registers (RWIMSC and FWIMSC). Acked-by:
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- May 05, 2010
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Harro Haan authored
Add some delay to avoid reading CSR TXCOUNT too early after updating it. For more info about this HW glitch see: http://lists.arm.linux.org.uk/lurker/message/20090325.150843.f515c02f.en.html http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100129/10ba0f8b/attachment.el http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100203/09cdb3b4/attachment.el http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100203/08b5b249/attachment.el First applied: "Fix soft lockup in at91 udc driver" http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=5965 Signed-off-by:
Anti Sullin <anti.sullin@artecdesign.ee> Signed-off-by:
Harro Haan <hrhaan@gmail.com> Acked-by:
Remy Bohmer <linux@bohmer.net> Acked-by:
Andrew Victor <linux@maxim.org.za> Signed-off-by:
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- May 04, 2010
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Rabin Vincent authored
Add basic support for the U5500 platform. Acked-by:
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Rabin Vincent authored
Move the DB8500-specific file to a more appropriate name. Acked-by:
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Rabin Vincent authored
So that the correct addresses get used on U5500. Acked-by:
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Rabin Vincent authored
Move the common system timer setup code to cpu.c. Acked-by:
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Rabin Vincent authored
The GPIO layout is different on DB5500, so move the current one to devices-db8500.c. Acked-by:
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Rabin Vincent authored
Move common i2c devices to devices.c and DB8500-specific I2C devices to devices-db8500.c. Acked-by:
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Rabin Vincent authored
The three PL011 UARTs are common among Ux500 SoCs, so move them to devices.c. Acked-by:
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Rabin Vincent authored
Add devices-db8500.c for DB8500-specific devices, starting with SSP0. Acked-by:
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Rabin Vincent authored
Introduce devices.c, for placing devices common among Ux500 SoCs. Start with the PL031 device. Acked-by:
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Rabin Vincent authored
Move GPIO macros to a common header, and allow them to use the correct macros for the appropriate SoC, and be named accordingly. Acked-by:
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Rabin Vincent authored
Move IRQ initialization and common io mapping setup code to cpu.c, renaming U8500* to UX500* along the way. Acked-by:
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Rabin Vincent authored
Allow the UART used for DEBUG_LL to be selected. Acked-by:
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Rabin Vincent authored
Split up all the hardware register definitions previously found in hardware.h into per-SoC files db8500-regs.h and db5500-regs.h. Rename a couple of macros to prepare for sharing code between the variants. Acked-by:
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Rabin Vincent authored
This adds the different config options for SoCs DB8500 and DB5500 and refines the SoC/CPU detection code to support the DB5500 as well via these. The selection between DB5500 and DB8500 is currently a simple compile-time choice. Acked-by:
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Claudio Scordino authored
Final version of the patch that adds support for RS485 communications to the atmel_serial driver. The patch has been already sent and discussed on both linux-kernel and linux-arm-kernel mailing lists several times. Many people collaborated to improve and test the code: Tested-by:
Sebastian Heutling <Sebastian.Heutling@who-ing.de> Tested-by:
Bernhard Roth <br@pwrnet.de> Reviewed-by:
Ryan Mallon <ryan@bluewatersys.com> Signed-off-by:
Claudio Scordino <claudio@evidence.eu.com> Signed-off-by:
Michael Trimarchi <michael@evidence.eu.com> Signed-off-by:
Rick Bronson <rick@efn.org> Signed-off-by:
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Viresh Kumar authored
Multiple peripherals in SPEAr share common hardware interrupt lines. This patch adds support for a shared irq layer, which registers hardware irqs by itself and exposes virtual irq numbers to peripherals. Signed-off-by:
Viresh Kumar <viresh.kumar@st.com> Signed-off-by:
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- May 02, 2010
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Anders Larsen authored
Disable the processor clock when the CPU is idle. This saves much more power than merely entering 'Wait for Interrupt' mode. Since JTAG-debugging doesn't work when the processor clock is switched off, make it conditional on CONFIG_DEBUG_KERNEL. Signed-off-by:
Anders Larsen <al@alarsen.net> Acked-by:
Andrew Victor <avictor.za@gmail.com> Signed-off-by:
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