1. 13 12月, 2011 2 次提交
    • G
      of: create of_phandle_args to simplify return of phandle parsing data · 15c9a0ac
      Grant Likely 提交于
      of_parse_phandle_with_args() needs to return quite a bit of data.  Rather
      than making each datum a separate **out_ argument, this patch creates
      struct of_phandle_args to contain all the returned data and reworks the
      user of the function.  This patch also enables of_parse_phandle_with_args()
      to return the device node pointer for the phandle node.
      
      This patch also ends up being fairly major surgery to
      of_parse_handle_with_args().  The existing structure didn't work well
      when extending to use of_phandle_args, and I discovered bugs during testing.
      I also took the opportunity to rename the function to be like the
      existing of_parse_phandle().
      
      v2: - moved declaration of of_phandle_args to fix compile on non-DT builds
          - fixed incorrect index in example usage
          - fixed incorrect return code handling for empty entries
      Reviewed-by: NShawn Guo <shawn.guo@freescale.com>
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      15c9a0ac
    • G
      gpiolib: output basic details and consolidate gpio device drivers · 64842aad
      Grant Likely 提交于
      This patch adds a kernel message, containing GPIO range and device
      name on successful device registration, and removes duplicate messages from the following drivers:
      	* gpio-adp5588
      	* gpio-bt8xx
      	* gpio-cs5535
      	* gpio-janz-ttl
      	* gpio-nomadik
      	* gpio-pcf857x
      	* gpio-xilinx
      	* drivers/of/gpio.c
      Signed-off-by: NHartmut Knaack <knaack.h@gmx.de>
      [grant.likely@secretlab.ca: squashed 2 patches together]
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      64842aad
  2. 29 7月, 2011 1 次提交
  3. 29 6月, 2011 1 次提交
  4. 06 7月, 2010 4 次提交
    • G
      of/gpio: fix of_gpio includes · 2e13cba8
      Grant Likely 提交于
      drivers/of/gpio.c is missing includes for of_irq and struct device which
      cause build failures on ARM.  This patch adds the correct include files
      and removes the unneeded kernel.h include
      Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
      2e13cba8
    • A
      of/gpio: add default of_xlate function if device has a node pointer · 391c970c
      Anton Vorontsov 提交于
      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: NAnton Vorontsov <avorontsov@ru.mvista.com>
      Signed-off-by: NGrant 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
    • G
      of/gpio: stop using device_node data pointer to find gpio_chip · 594fa265
      Grant Likely 提交于
      Currently the kernel uses the struct device_node.data pointer to resolve
      a struct gpio_chip pointer from a device tree node.  However, the .data
      member doesn't provide any type checking and there aren't any rules
      enforced on what it should be used for.  There's no guarantee that the
      data stored in it actually points to an gpio_chip pointer.
      
      Instead of relying on the .data pointer, this patch modifies the code
      to add a lookup function which scans through the registered gpio_chips
      and returns the gpio_chip that has a pointer to the specified
      device_node.
      Signed-off-by: NGrant 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>
      CC: linux-kernel@vger.kernel.org
      CC: devicetree-discuss@lists.ozlabs.org
      594fa265
    • A
      of/gpio: Kill of_gpio_chip and add members directly to gpio_chip · a19e3da5
      Anton Vorontsov 提交于
      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: NGrant 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
  5. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      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: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  6. 09 2月, 2010 1 次提交
  7. 21 12月, 2008 1 次提交
  8. 03 12月, 2008 1 次提交
  9. 13 10月, 2008 1 次提交
  10. 23 5月, 2008 1 次提交
  11. 17 4月, 2008 1 次提交