Eric Lee / smarc-fsl-linux-kernel

20 Jul, 2007

10 commits

16 May, 2007

2 commits

11 May, 2007

7 commits

  • 490cbd92e   [ALSA] usb-audio: work around wrong wMaxPacketSize on ESI M4U ... Browse Code »

    Add a workaround for the ESI M4U that claims to support 32-byte packets
    but ignores the remaining bytes of packets bigger than four bytes.

    Signed-off-by: Clemens Ladisch
    Signed-off-by: Jaroslav Kysela

    Clemens Ladisch
     
  • d05cc1043   [ALSA] usb-audio: work around broken M-Audio MidiSport Uno firmware ... Browse Code »

    The firmware of the M-Audio USB Uno MIDI Interface has, at least in
    hardware revision 1.25, a bug that garbles its USB output. When it
    receives a Note On MIDI message that uses running status, the resulting
    USB MIDI packet has a wrong CIN (4 instead of 9) and a wrong length
    (2 bytes, the status byte is still missing).
    This patch adds a workaround to track the CINs and the MIDI messages of
    received USB MIDI packets to detect whether a packet with CIN 4 is a
    correct SysEx packet or a buggy running status packet.

    Signed-off-by: Clemens Ladisch
    Signed-off-by: Jaroslav Kysela

    Clemens Ladisch
     
  • a91214589   [ALSA] usb-audio: explicitly match Logitech QuickCam ... Browse Code »

    Commit 93c8bf45e083b89dffe3a708363c15c1b220c723 modified the USB device
    matching behaviour to ignore interface class matches if the device class
    is vendor-specific.
    This patch adds explicit ID matches for Logitech QuickCam devices, which
    have a vendor specific device class (but standards-compliant audio
    interfaces).
    This fixes a 2.6.20 regression where the audio component of these
    devices was no longer usable.
    http://bugs.gentoo.org/show_bug.cgi?id=175715
    https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/93822
    https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3040
    Based on a patch from sergiom

    Signed-off-by: Daniel Drake
    Signed-off-by: Clemens Ladisch
    Signed-off-by: Jaroslav Kysela

    Daniel Drake
     
  • 81c4899f7   [ALSA] usbaudio - Revert the minimal period size fix patch ... Browse Code »

    The last patch didn't really work (false report).
    Although the hardware supports 125us minimum period, the current
    usb-audio driver code assumes the 1ms period in many places.
    Rollback the change.

    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Takashi Iwai
     
  • 6b9fa70a7   [ALSA] usb-audio - Fix the minimum period size per transfer mode ... Browse Code »

    The minimal period size is 125us for high-speed mode while
    1ms for full-speed mode.

    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Takashi Iwai
     
  • a971c3d42   [ALSA] snd-usb-caiaq: Make playback work ... Browse Code »

    some typo fixes.

    Signed-off-by: Karsten Wiese
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Karsten Wiese
     
  • 523f1dce3   [ALSA] Add Native Instrument usb audio device support ... Browse Code »

    Add snd-usb-caiaq driver to support caiaq usb-audio devices from
    Native Instrument:
    * Native Instruments RigKontrol2
    * Native Instruments Kore Controller
    * Native Instruments Audio Kontrol 1
    * Native Instruments Audio 8 DJ

    Signed-off-by: Daniel Mack
    Signed-off-by: Karsten Wiese
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Daniel Mack
     

14 Feb, 2007

2 commits

09 Feb, 2007

6 commits

23 Jan, 2007

1 commit

  • bc6191b10   [ALSA] Repair snd-usb-usx2y over OHCI ... Browse Code »

    The previous patch 'Repair snd-usb-usx2y for usb 2.6.18' assumed
    urb->start_frame roll over beyond MAX_INT for both UHCI & OHCI.
    This isn't true until now (kernel 2.6.20).
    Fix this by only looking at the common between OHCI & UHCI Frame number
    range.
    This is for mainline and stable kernels >= 2.6.18.

    Signed-off-by: Karsten Wiese
    Signed-off-by: Takashi Iwai
    Signed-off-by: Jaroslav Kysela

    Karsten Wiese
     

09 Jan, 2007

3 commits

20 Dec, 2006

1 commit

08 Dec, 2006

1 commit

02 Dec, 2006

2 commits

28 Nov, 2006

1 commit

07 Oct, 2006

2 commits

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
     

01 Oct, 2006

1 commit