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  1. 25 2月, 2010 2 次提交
  3. 24 2月, 2010 1 次提交
    • Z
      ALSA: hda - remove unnecessary msleep on power state transitions · dd2b4a7a
      由 Zhang, Rui 提交于 
      This will save ~15ms boot time.

The first 10ms sleep was introduced in commit d2595d86 for (buggy)
Cxt codecs, so better to limit the sleep to the problem hardware.

For the second 10ms sleep, the HDA spec says:

Power State[1:0]:
00: Node Power state (D0) is fully on.
01: Node Power state (D1) allows for (does not require) the lowest possible power consuming state from which it
can return to the "fully on" state (D0) within 10 ms, excepting analog pass through circuits (e.g., CD analog
playback) which must remain fully on.
10: Node Power state (D2) allows for (does not require) the lowest possible power consuming state from which it
can return to the "fully on" state (D0) within 10 ms. For modems, this is the "wake on ring" power state.
11: Node Power state (D3) allows for (does not require) lowest possible power consuming state under software
control. Note that any low power state set by software must retain sufficient operational capability to properly
respond to subsequent software Power State command.

So 10ms is actually the max wait time. It should be safe to
remove/reduce it and rely on the loop of 1ms-sleeps.

CC: Marc Boucher <marc@linuxant.com>
CC: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>
Signed-off-by: NWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      dd2b4a7a
  5. 23 2月, 2010 3 次提交
  7. 22 2月, 2010 6 次提交
  9. 18 2月, 2010 2 次提交
  11. 17 2月, 2010 1 次提交
    • G
      ALSA: Echoaudio, fix Guru Meditation #5.48454C50 · b721e68b
      由 Giuliano Pochini 提交于 
      This patch fixes a division by zero error in the irq handler.

There is a small window between the hw_params() callback and when
runtime->frame_bits is set by ALSA middle layer. When another substream is
already running, if an interrupt is delivered during that window the irq
handler calls pcm_pointer() which does a division by zero. The patch below
makes the irq handler skip substreams that are initialized but not started
yet. Cc to Clemens Ladisch because he proposed an alternate fix.

For more information, please read the original thread in the linux-kernel
mailing list: http://lkml.org/lkml/2010/2/2/187Signed-off-by: NGiuliano Pochini <pochini@shiny.it>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      b721e68b
  13. 16 2月, 2010 1 次提交
  15. 15 2月, 2010 4 次提交
    • G
      ALSA: Echoaudio - Add suspend support #2 · 47b5d028
      由 Giuliano Pochini 提交于 
      This patch adds rearranges parts of the initialization code and adds
suspend and resume callbacks.

This patch adds suspend and resume callbacks.
It also rearranges parts of the initialization code so it can be
used in both the first initialization (when the module is loaded we
also have to load default settings) and the resume callback (where
we have to restore the previous settings).
Signed-off-by: NGiuliano Pochini <pochini@shiny.it>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      47b5d028
    • G
      ALSA: Echoaudio - Add suspend support #1 · ad3499f4
      由 Giuliano Pochini 提交于 
      Move the controls init code outside the init_hw() function because is must
not be called during resume.

This patch moves the code that initializes the card's controls with
default valued from the init_hw() function into a separated
set_mixer_defaults() function (one for each of the 16 supported
cards). This change is necessary because during resume we must
resurrect the hardware without losing the previous
settings. set_mixer_defaults() must be called only once when the
module is loaded.
Signed-off-by: NGiuliano Pochini <pochini@shiny.it>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      ad3499f4
    • G
      ALSA: Echoaudio - Add firmware cache #2 · 4f8ada44
      由 Giuliano Pochini 提交于 
      This patch implements a simple cache for the firmware files when CONFIG_PM is defined.

This patch changes get_firmware(), free_firmware() and adds
free_firmware_cache(). The first two functions implement a very
simple cache and the latter is used to actually release all the stored
firmwares when the module is unloaded. 
When CONFIG_PM is not enabled those functions act as before, that is
free_firmware() releases the firmware immediately and
free_firmware_cache() does nothing.
Signed-off-by: NGiuliano Pochini <pochini@shiny.it>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      4f8ada44
    • G
      ALSA: Echoaudio - Add firmware cache #1 · 19b50063
      由 Giuliano Pochini 提交于 
      Changes the way the firmware is passed through functions.

When CONFIG_PM is enabled the firmware cannot be released because the
driver will need it again to resume the card. 
With this patch the firmware is passed as an index of the struct
firmware card_fw[] in place of a pointer. That same index is then used
to locate the firmware in the firmware cache.
Signed-off-by: NGiuliano Pochini <pochini@shiny.it>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      19b50063
  17. 13 2月, 2010 2 次提交
  19. 10 2月, 2010 1 次提交
    • J
      ALSA: hda-intel: Avoid divide by zero crash · fed08d03
      由 Jody Bruchon 提交于 
      On my AMD780V chipset, hda_intel.c can crash the kernel with a divide by
zero
for as-yet unknown reasons. A simple check for zero prevents it, though
the problem that causes it remains. Since the workaround is harmless and
won't affect anyone except victims of this bug, it should be safe;
moreover,
because this crash can be triggered by a user-mode application, there are
denial of service implications on the systems affected by the bug without
the patch.
Signed-off-by: NJody Bruchon <jody@nctritech.com>
Cc: <stable@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      fed08d03
  21. 09 2月, 2010 2 次提交
  23. 08 2月, 2010 3 次提交
  25. 05 2月, 2010 5 次提交
  27. 04 2月, 2010 5 次提交
  29. 29 1月, 2010 2 次提交