1. 17 1月, 2017 1 次提交
  2. 16 11月, 2016 1 次提交
  3. 14 11月, 2016 1 次提交
  4. 18 10月, 2016 1 次提交
  5. 03 10月, 2016 1 次提交
  6. 08 9月, 2016 1 次提交
    • L
      bus: qcom: add EBI2 driver · 335a1275
      Linus Walleij 提交于
      This adds a driver for the Qualcomm External Bus Interface EBI2
      found in the MSM8660 and APQ8060 SoCs (at least).
      
      This was tested with the SMSC9112 ethernet on the APQ8060
      Dragonboard sitting on top of the SLOW CS2.
      
      Some of my understanding if very vague and based on guesses and
      extrapolations: the documentation in APQ8060 Qualcomm Application
      Processor User Guide 80-N7150-14 Rev. A describes select features but
      does not document the register bit fields.
      Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
      335a1275
  7. 16 8月, 2016 1 次提交
  8. 01 7月, 2016 1 次提交
    • J
      bus: Add support for Tegra ACONNECT · 46a88534
      Jon Hunter 提交于
      Add a bus driver for the Tegra ACONNECT which is used to interface to
      various devices within the Audio Processing Engine (APE). The purpose
      of the bus driver is to register child devices that are accessed via
      the ACONNECT bus and through the device parent child relationship,
      ensure that the appropriate power domain and clocks are enabled for
      the ACONNECT when any of the child devices are active. Hence, the
      ACONNECT driver simply enables runtime-pm for the ACONNECT device
      so that when a child device is resumed, it will enable the power-domain
      and clocks associated with the ACONNECT.
      Signed-off-by: NJon Hunter <jonathanh@nvidia.com>
      Signed-off-by: NThierry Reding <treding@nvidia.com>
      46a88534
  9. 09 5月, 2016 1 次提交
    • S
      arm-ccn: Enable building as module · 5420f9fd
      Suzuki K Poulose 提交于
      arm-ccn driver uses irq_set_affinity, which is not exported and
      hence cannot be built as a module, eventhough we have all the
      bits ready. This patch makes use of the exported helper
      irq_set_affinity_hint() instead. Also, the __free_irq expects
      the affinity_hint to be NULL when we free the irq. So set the
      affinity_hint to NULL at clean up.
      
      Now that we can build it as a module, update the Kconfig to
      reflect the change.
      
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Acked-by: NPawel Moll <pawel.moll@arm.com>
      Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      5420f9fd
  10. 19 4月, 2016 1 次提交
  11. 28 3月, 2016 1 次提交
  12. 01 3月, 2016 2 次提交
  13. 02 2月, 2016 1 次提交
  14. 01 1月, 2016 1 次提交
  15. 23 12月, 2015 1 次提交
    • M
      bus: uniphier-system-bus: add UniPhier System Bus driver · 4b7f48d3
      Masahiro Yamada 提交于
      The UniPhier System Bus is an external bus that connects on-board
      devices to the UniPhier SoC.  Each bank (chip select) is dynamically
      mapped to the CPU-viewed address base via the bus controller.  The
      bus controller must be configured before any access to the bus.
      
      This driver parses the "ranges" property of the System Bus node and
      initialized the bus controller.  After the bus becomes ready, devices
      below it are populated.
      
      Note:
      Each bank can be mapped anywhere in the supported address space;
      there is nothing preventing us from assigning bank 0 on 0x42000000,
      0x43000000, or anywhere as long as such region is not used by others.
      So, the "ranges" is just one possible software configuration, which
      does not seem to fit in device tree because device tree is a hardware
      description language.  However, of_translate_address() requires
      "ranges" in every bus node between CPUs and device mapped on the CPU
      address space.  In other words, "ranges" properties must be statically
      defined in device tree.  After some discussion, I decided the dynamic
      address reassignment by the driver is too bothersome.  Instead, the
      device tree should provide a reasonable translation setup that the OS
      can rely on.
      Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
      Acked-by: NRob Herring <robh@kernel.org>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      4b7f48d3
  16. 26 10月, 2015 1 次提交
  17. 29 9月, 2015 1 次提交
  18. 29 5月, 2015 3 次提交
  19. 31 3月, 2015 1 次提交
    • J
      MIPS: Add CDMM bus support · 8286ae03
      James Hogan 提交于
      Add MIPS Common Device Memory Map (CDMM) support in the form of a bus in
      the standard Linux device model. Each device attached via CDMM is
      discoverable via an 8-bit type identifier and may contain a number of
      blocks of memory mapped registers in the CDMM region. IRQs are expected
      to be handled separately.
      
      Due to the per-cpu (per-VPE for MT cores) nature of the CDMM devices,
      all the driver callbacks take place from workqueues which are run on the
      right CPU for the device in question, so that the driver doesn't need to
      be as concerned about which CPU it is running on. Callbacks also exist
      for when CPUs are taken offline, so that any per-CPU resources used by
      the driver can be disabled so they don't get forcefully migrated. CDMM
      devices are created as children of the CPU device they are attached to.
      
      Any existing CDMM configuration by the bootloader will be inherited,
      however platforms wishing to enable CDMM should implement the weak
      mips_cdmm_phys_base() function (see asm/cdmm.h) so that the bus driver
      knows where it should put the CDMM region in the physical address space
      if the bootloader hasn't already enabled it.
      
      A mips_cdmm_early_probe() function is also provided to allow early boot
      or particularly low level code to set up the CDMM region and probe for a
      specific device type, for example early console or KGDB IO drivers for
      the EJTAG Fast Debug Channel (FDC) CDMM device.
      Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: linux-mips@linux-mips.org
      Cc: linux-kernel@vger.kernel.org
      Patchwork: https://patchwork.linux-mips.org/patch/9599/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      8286ae03
  20. 27 3月, 2015 1 次提交
  21. 24 2月, 2015 2 次提交
  22. 29 11月, 2014 1 次提交
  23. 24 7月, 2014 2 次提交
  24. 17 6月, 2014 1 次提交
    • A
      bus/arm-cci: add dependency on OF && CPU_V7 · 30b6f37d
      Arnd Bergmann 提交于
      The arm-cci code uses device tree helpers for initialization
      that don't work on kernels built without CONFIG_OF. Further,
      it contains an inline assembly in cci_enable_port_for_self()
      that uses ARMv7 instructions and fails to build when targetting
      other ARM instruction set versions.
      
      This works around both issues by limiting the scope of the
      Kconfig symbol to platforms that can actually build this driver
      cleanly.
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Acked-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
      Cc: Shawn Guo <shawn.guo@linaro.org>
      30b6f37d
  25. 27 5月, 2014 1 次提交
    • A
      ARM: vexpress: refine dependencies for new code · b33cdd28
      Arnd Bergmann 提交于
      The versatile express changes for 3.16 introduced a number of
      build regressions for randconfig kernels by not tracking dependencies
      between the components right.
      
      This patch tries to rectify that:
      
      * the mach-vexpress code cannot link without the syscfg driver,
        which in turn needs MFD_VEXPRESS_SYSREG
      * various drivers call devm_regmap_init_vexpress_config(), which
        has to be exported so it can be used by loadable modules
      * the configuration bus uses OF DT helper functions that are not
        available to platforms disable CONFIG_OF
      * The sysreg driver exports GPIOs through gpiolib, which can
        be disabled on some platforms.
      * The clocksource code cannot be built on platforms that don't
        use modern timekeeping but rely on gettimeoffset.
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      b33cdd28
  26. 24 5月, 2014 1 次提交
    • F
      bus: add Broadcom GISB bus arbiter timeout/error handler · 44127b77
      Florian Fainelli 提交于
      This patch adds support for the Broadcom GISB arbiter bus timeout/error
      handler. GISB is a proprietary bus used by Broadcom Set Top Box
      System-on-a-chip devices (BCM7xxx) which allows multiple masters and
      clients to be interfaced with each other.
      
      The bus arbiter offers support for generating two interrupts towards the
      host CPU, thus allowing us to "catch" clock gated masters, or masters
      being volontarily blocked for powersaving purposes, or do general system
      troubleshooting.
      
      We also register a hook with the ARM fault exception handling to allow
      printing a more informative message than "imprecise external abort at
      0x00000000" for instance.
      Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      44127b77
  27. 16 5月, 2014 1 次提交
    • P
      mfd: vexpress: Convert custom func API to regmap · 3b9334ac
      Pawel Moll 提交于
      Components of the Versatile Express platform (configuration
      microcontrollers on motherboard and daughterboards in particular)
      talk to each other over a custom configuration bus. They
      provide miscellaneous functions (from clock generator control
      to energy sensors) which are represented as platform devices
      (and Device Tree nodes). The transactions on the bus can
      be generated by different "bridges" in the system, some
      of which are universal for the whole platform (for the price
      of high transfer latencies), others restricted to a subsystem
      (but much faster).
      
      Until now drivers for such functions were using custom "func"
      API, which is being replaced in this patch by regmap calls.
      This required:
      
      * a rework (and move to drivers/bus directory, as suggested
        by Samuel and Arnd) of the config bus core, which is much
        simpler now and uses device model infrastructure (class)
        to keep track of the bridges; non-DT case (soon to be
        retired anyway) is simply covered by a special device
        registration function
      
      * the new config-bus driver also takes over device population,
        so there is no need for special matching table for
        of_platform_populate nor "simple-bus" hack in the arm64
        model dtsi file (relevant bindings documentation has
        been updated); this allows all the vexpress devices
        fit into normal device model, making it possible
        to remove plenty of early inits and other hacks in
        the near future
      
      * adaptation of the syscfg bridge implementation in the
        sysreg driver, again making it much simpler; there is
        a special case of the "energy" function spanning two
        registers, where they should be both defined in the tree
        now, but backward compatibility is maintained in the code
      
      * modification of the relevant drivers:
      
        * hwmon - just a straight-forward API change
        * power/reset driver - API change
        * regulator - API change plus error handling
          simplification
        * osc clock driver - this one required larger rework
          in order to turn in into a standard platform driver
      Signed-off-by: NPawel Moll <pawel.moll@arm.com>
      Acked-by: NMark Brown <broonie@linaro.org>
      Acked-by: NLee Jones <lee.jones@linaro.org>
      Acked-by: NGuenter Roeck <linux@roeck-us.net>
      Acked-by: NMike Turquette <mturquette@linaro.org>
      3b9334ac
  28. 16 8月, 2013 1 次提交
  29. 17 6月, 2013 1 次提交
  30. 30 5月, 2013 1 次提交
    • L
      drivers: bus: add ARM CCI support · ed69bdd8
      Lorenzo Pieralisi 提交于
      On ARM multi-cluster systems coherency between cores running on
      different clusters is managed by the cache-coherent interconnect (CCI).
      It allows broadcasting of TLB invalidates and memory barriers and it
      guarantees cache coherency at system level through snooping of slave
      interfaces connected to it.
      
      This patch enables the basic infrastructure required in Linux to handle and
      programme the CCI component.
      
      Non-local variables used by the CCI management functions called by power
      down function calls after disabling the cache must be flushed out to main
      memory in advance, otherwise incoherency of those values may occur if they
      are sitting in the cache of some other CPU when power down functions
      execute. Driver code ensures that relevant data structures are flushed
      from inner and outer caches after the driver probe is completed.
      
      CCI slave port resources are linked to set of CPUs through bus masters
      phandle properties that link the interface resources to masters node in
      the device tree.
      
      Documentation describing the CCI DT bindings is provided with the patch.
      Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
      Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org>
      ed69bdd8
  31. 29 3月, 2013 1 次提交
    • T
      bus: introduce an Marvell EBU MBus driver · fddddb52
      Thomas Petazzoni 提交于
      The Marvell EBU SoCs have a configurable physical address space
      layout: the physical ranges of memory used to address PCI(e)
      interfaces, NOR flashes, SRAM and various other types of memory are
      configurable by software, through a mechanism of so-called 'address
      decoding windows'.
      
      This new driver mvebu-mbus consolidates the existing code to address
      the configuration of these memory ranges, which is spread into
      mach-mvebu, mach-orion5x, mach-mv78xx0, mach-dove and mach-kirkwood.
      
      Following patches convert each Marvell EBU SoC family to use this
      driver, therefore removing the old code that was configuring the
      address decoding windows.
      
      It is worth mentioning that the MVEBU_MBUS Kconfig option is
      intentionally added as a blind option. The new driver implements and
      exports the mv_mbus_dram_info() function, which is used by various
      Marvell drivers throughout the tree to get access to window
      configuration parameters that they require. This function is also
      implemented in arch/arm/plat-orion/addr-map.c, which ultimately gets
      removed at the end of this patch series. So, in order to preserve
      bisectability, we want to ensure that *either* this new driver, *or*
      the legacy code in plat-orion/addr-map.c gets compiled in.
      
      By making MVEBU_MBUS a blind option, we are sure that only a platform
      that does 'select MVEBU_MBUS' will get this new driver compiled
      in. Therefore, throughout the next patches that convert the Marvell
      sub-architectures one after the other to this new driver, we add the
      'select MVEBU_MBUS' and also ensure to remove plat-orion/addr-map.c
      from the build for this specific sub-architecture. This ensures that
      bisectability is preserved.
      
      Ealier versions of this driver had a DT binding, but since those were
      not yet agreed upon, they were removed. The driver still uses
      of_device_id to find the SoC specific details according to the string
      passed to mvebu_mbus_init(). The plan is to re-introduce a proper DT
      binding as a followup set of patches.
      Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NJason Cooper <jason@lakedaemon.net>
      fddddb52
  32. 17 12月, 2012 1 次提交
  33. 19 9月, 2012 1 次提交
  34. 22 8月, 2012 1 次提交