Eric Lee / smarc-fsl-linux-kernel

18 Oct, 2006

1 commit

  • 22a60f195   Merge master.kernel.org:/home/rmk/linux-2.6-arm ... Browse Code »

    * master.kernel.org:/home/rmk/linux-2.6-arm:
    [ARM] switch to new pci_get_bus_and_slot API
    [ARM] Update mach-types
    [ARM] Fix Zaurii keyboard/touchscreen drivers
    [ARM] Fix fallout from IRQ regs changes
    [ARM] 3890/1: [Jornada7xx] Addition of MCU commands into jornada720.h
    [ARM] 3889/1: [Jornada7xx] Addition of correct SDRAM params into cpu-sa1110.c
    [ARM] 3888/1: add pxa27x SSP FSRT register bit definition

    Linus Torvalds
     

15 Oct, 2006

1 commit

11 Oct, 2006

1 commit

10 Oct, 2006

1 commit

07 Oct, 2006

1 commit

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

04 Oct, 2006

1 commit

02 Oct, 2006

1 commit

  • a12f66fcc   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input ... Browse Code »

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits)
    Input: wistron - add support for Acer TravelMate 2424NWXCi
    Input: wistron - fix setting up special buttons
    Input: add KEY_BLUETOOTH and KEY_WLAN definitions
    Input: add new BUS_VIRTUAL bus type
    Input: add driver for stowaway serial keyboards
    Input: make input_register_handler() return error codes
    Input: remove cruft that was needed for transition to sysfs
    Input: fix input module refcounting
    Input: constify input core
    Input: libps2 - rearrange exports
    Input: atkbd - support Microsoft Natural Elite Pro keyboards
    Input: i8042 - disable MUX mode on Toshiba Equium A110
    Input: i8042 - get rid of polling timer
    Input: send key up events at disconnect
    Input: constify psmouse driver
    Input: i8042 - add Amoi to the MUX blacklist
    Input: logips2pp - add sugnature 56 (Cordless MouseMan Wheel), cleanup
    Input: add driver for Touchwin serial touchscreens
    Input: add driver for Touchright serial touchscreens
    Input: add driver for Penmount serial touchscreens
    ...

    Linus Torvalds
     

30 Sep, 2006

1 commit

  • ad4e09b16   [PATCH] OMAP: Add keypad driver ... Browse Code »

    This patch adds support for keypad driver running on different TI
    OMAP(http://www.ti.com/omap) processor based boards like OSK, H2, H3, H4,
    Persuas and Nokia 770.

    Signed-off-by: Komal Shah
    Acked-by: Dmitry Torokhov
    Cc: Russell King
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Komal Shah
     

19 Sep, 2006

2 commits

14 Sep, 2006

1 commit

23 Aug, 2006

1 commit

05 Aug, 2006

1 commit

03 Jul, 2006

1 commit

01 Jul, 2006

1 commit

28 Jun, 2006

1 commit

26 Jun, 2006

3 commits

23 Jun, 2006

1 commit

  • 5fa28ea42   [PATCH] m68k: restore amikbd compatibility with 2.4 ... Browse Code »

    Dump the extra mapping in the amikbd interrupt handler, so old Amiga keymaps
    work again. Amigas need a special keymap anyway, standard keymaps are not
    usable and recreating all keymaps is simply not worth the trouble.

    Signed-off-by: Roman Zippel
    Cc: Dmitry Torokhov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Roman Zippel
     

30 May, 2006

1 commit

29 Apr, 2006

1 commit

26 Apr, 2006

1 commit

22 Apr, 2006

1 commit

02 Apr, 2006

1 commit

31 Mar, 2006

2 commits

14 Mar, 2006

5 commits

19 Feb, 2006

1 commit

15 Feb, 2006

1 commit

11 Jan, 2006

1 commit

10 Jan, 2006

1 commit

09 Jan, 2006

1 commit

  • 9ded96f24   [PATCH] IRQ type flags ... Browse Code »

    Some ARM platforms have the ability to program the interrupt controller to
    detect various interrupt edges and/or levels. For some platforms, this is
    critical to setup correctly, particularly those which the setting is dependent
    on the device.

    Currently, ARM drivers do (eg) the following:

    err = request_irq(irq, ...);

    set_irq_type(irq, IRQT_RISING);

    However, if the interrupt has previously been programmed to be level sensitive
    (for whatever reason) then this will cause an interrupt storm.

    Hence, if we combine set_irq_type() with request_irq(), we can then safely set
    the type prior to unmasking the interrupt. The unfortunate problem is that in
    order to support this, these flags need to be visible outside of the ARM
    architecture - drivers such as smc91x need these flags and they're
    cross-architecture.

    Finally, the SA_TRIGGER_* flag passed to request_irq() should reflect the
    property that the device would like. The IRQ controller code should do its
    best to select the most appropriate supported mode.

    Signed-off-by: Russell King
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Russell King
     

06 Jan, 2006

1 commit

20 Nov, 2005

1 commit