• Arnd Bergmann's avatar
    Merge branch 'for-arm-soc' of... · 19e4ab54
    Arnd Bergmann authored
    Merge branch 'for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds into next/drivers
    
    From Bryan Wu <bryan.wu@canonical.com>:
    
    Based on Linus Walleij's ARM LED consolidation work, this patchset introduce a
    new generic led trigger for CPU not only for ARM but also for others.
    
    For enabling CPU idle event, CPU arch code should call ledtrig_cpu() stub to
    trigger idle start or idle end event.
    
    These patches convert old style LED driver in arch/arm to gpio_led or new led
    driver interface. Against 3.5 release and build successfully for all the machines.
    
    Test ledtrig-cpu driver on OMAP4 Panda board.
    
    v9 --> v10
     * fix compiling issue on versatile_defconfig reported by Russell King
     * rebase to 3.5 kernel and move patches to new git tree
    
    v8 --> v9:
     * use mutex to replace rw_sema pointed out by Tim Gardner
     * add a new struct led_trigger_cpu
     * add lock_is_inited to record mutex lock initialization
    
    v6 --> v7:
     * add a patch to unify the led-trigger name
     * fix some typo pointed
     * use BUG_ON to detect CPU numbers during building stage
    
    v5 --> v6:
     * replace  __get_cpu_var() to per_cpu()
     * remove smp_processor_id() which is wrong with for_each_possible_cpu()
     * test on real OMAP4 Panda board
     * add comments about CPU hotplug in the CPU LED trigger driver
    
    v4 --> v5:
     * rebase all the patches on top of latest linux-next
     * replace on_each_cpu() with for_each_possible_cpu()
     * add some description of ledtrig_cpu() API
     * remove old leds code from driver nwflash.c, which should use a new led trigger then
     * this trigger driver can be built as module now
    
    v3 --> v4:
     * fix a typo pointed by Jochen Friedrich
     * fix some building errors
     * add Reviewed-by and Tested-by into patch log
    
    v2 --> v3:
     * almost rewrote the whole ledtrig-cpu driver, which is more simple
     * every CPU will have a per-CPU trigger
     * cpu trigger can be assigned to any leds
     * fix a lockdep issue in led-trigger common code
     * other fix according to review
    
    v1 --> v2:
     * remove select operations in Kconfig of every machines
     * add back supporting of led in core module of mach-integrator
     * solidate name scheme in ledtrig-cpu.c
     * add comments of CPU_LED_* cpu led events
     * fold patches of RealView and Versatile together
     * add machine_is_ check during assabet led driver init
     * add some Acked-by in patch logs
     * remove code for simpad machine in machine-sa11000, since Jochen Friedrich
       introduced gpiolib and gpio-led driver for simpad
     * on Assabet and Netwinder machine, LED operations is reversed like:
       setting bit means turn off leds
       clearing bit means turn on leds
     * add a new function to read CM_CTRL register for led driver
    
    * 'for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
      ARM: use new LEDS CPU trigger stub to replace old one
      ARM: mach-sa1100: retire custom LED code
      ARM: mach-omap1: retire custom LED code
      ARM: mach-pnx4008: remove including old leds event API header file
      ARM: plat-samsung: remove including old leds event API header file
      ARM: mach-pxa: retire custom LED code
      char: nwflash: remove old led event code
      ARM: mach-footbridge: retire custom LED code
      ARM: mach-ebsa110: retire custom LED code
      ARM: mach-clps711x: retire custom LED code of P720T machine
      ARM: mach-integrator: retire custom LED code
      ARM: mach-integrator: move CM_CTRL to header file for accessing by other functions
      ARM: mach-orion5x: convert custom LED code to gpio_led and LED CPU trigger
      ARM: mach-shark: retire custom LED code
      ARM: mach-ks8695: remove leds driver, since nobody use it
      ARM: mach-realview and mach-versatile: retire custom LED code
      ARM: at91: convert old leds drivers to gpio_led and led_trigger drivers
      led-triggers: create a trigger for CPU activity
    
    Conflicts:
    	arch/arm/mach-clps711x/p720t.c
    	arch/arm/mach-sa1100/leds-cerf.c
    	arch/arm/mach-sa1100/leds-lart.c
    
    Let's hope this is the last time we pull this and it doesn't cause
    more trouble. I have verified that version 10 causes no build
    warnings or errors any more, and the patches still look good.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    19e4ab54
core.c 3.99 KB