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  11. 24 Jul, 2010 1 commit
  12. 05 Jul, 2010 2 commits
    • Anton Vorontsov's avatar
      of/gpio: add default of_xlate function if device has a node pointer · 391c970c
      Anton Vorontsov authored
      Implement generic OF gpio hooks and thus make device-enabled GPIO chips
      (i.e.  the ones that have gpio_chip->dev specified) automatically attach
      to the OpenFirmware subsystem.  Which means that now we can handle I2C and
      SPI GPIO chips almost* transparently.
      
      * "Almost" because some chips still require platform data, and for these
        chips OF-glue is still needed, though with this change the glue will
        be much smaller.
      Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Cc: David Brownell <dbrownell@users.sourceforge.net>
      Cc: Bill Gatliff <bgat@billgatliff.com>
      Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Jean Delvare <khali@linux-fr.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      CC: linux-kernel@vger.kernel.org
      CC: devicetree-discuss@lists.ozlabs.org
      391c970c
    • Anton Vorontsov's avatar
      of/gpio: Kill of_gpio_chip and add members directly to gpio_chip · a19e3da5
      Anton Vorontsov authored
      The OF gpio infrastructure is great for describing GPIO connections within
      the device tree.  However, using a GPIO binding still requires changes to
      the gpio controller just to add an of_gpio structure.  In most cases, the
      gpio controller doesn't actually need any special support and the simple
      OF gpio mapping function is more than sufficient.  Additional, the current
      scheme of using of_gpio_chip requires a convoluted scheme to maintain
      1:1 mappings between of_gpio_chip and gpio_chip instances.
      
      If the struct of_gpio_chip data members were moved into struct gpio_chip,
      then it would simplify the processing of OF gpio bindings, and it would
      make it trivial to use device tree OF connections on existing gpiolib
      controller drivers.
      
      This patch eliminates the of_gpio_chip structure and moves the relevant
      fields into struct gpio_chip (conditional on CONFIG_OF_GPIO).  This move
      simplifies the existing code and prepares for adding automatic device tree
      support to existing drivers.
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
      Cc: Grant Likely <grant.likely@secretlab.ca>
      Cc: David Brownell <dbrownell@users.sourceforge.net>
      Cc: Bill Gatliff <bgat@billgatliff.com>
      Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Jean Delvare <khali@linux-fr.org>
      a19e3da5
  13. 22 May, 2010 1 commit
    • Grant Likely's avatar
      of: Remove duplicate fields from of_platform_driver · 4018294b
      Grant Likely authored
      .name, .match_table and .owner are duplicated in both of_platform_driver
      and device_driver.  This patch is a removes the extra copies from struct
      of_platform_driver and converts all users to the device_driver members.
      
      This patch is a pretty mechanical change.  The usage model doesn't change
      and if any drivers have been missed, or if anything has been fixed up
      incorrectly, then it will fail with a compile time error, and the fixup
      will be trivial.  This patch looks big and scary because it touches so
      many files, but it should be pretty safe.
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Acked-by: default avatarSean MacLennan <smaclennan@pikatech.com>
      4018294b
  14. 18 May, 2010 1 commit
  15. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  16. 04 Feb, 2009 1 commit
    • Grant Likely's avatar
      powerpc/5200: Rework GPT driver to also be an IRQ controller · 5496eab2
      Grant Likely authored
      This patch adds IRQ controller support to the MPC5200 General
      Purpose Timer (GPT) device driver.  With this patch the mpc5200-gpt
      driver supports both GPIO and IRQ functions.
      
      The GPT driver was contained within the mpc52xx_gpio.c file, but this
      patch moves it out into a new file (mpc52xx_gpt.c) since it has more
      than just GPIO functionality now and it was only grouped with the
      mpc52xx-gpio drivers as a matter of convenience before.  Also, this
      driver will most likely get extended again to also provide support
      for the timer function.
      
      Implementation note: Alternately, I could have tried to implement
      the IRQ support as a separate driver and left the GPIO portion alone.
      However, multiple functions of this device (ie. GPIO input+interrupt
      controller, or timer+GPIO) can be active at the same time and the
      registers are shared so it is safer to contain all functionality
      within a single driver.
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Reviewed-by: default avatarWolfram Sang <w.sang@pengutronix.de>
      5496eab2
  17. 09 Jan, 2009 1 commit
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  19. 29 Apr, 2008 1 commit