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  1. 15 2月, 2010 3 次提交
    • 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
  3. 09 2月, 2010 1 次提交
  5. 30 9月, 2009 1 次提交
  7. 28 4月, 2009 1 次提交
  9. 19 3月, 2009 1 次提交
  11. 16 3月, 2009 2 次提交
  13. 12 2月, 2009 1 次提交
  15. 12 1月, 2009 1 次提交
  17. 25 8月, 2008 1 次提交
  19. 13 8月, 2008 1 次提交
  21. 24 4月, 2008 1 次提交
  23. 01 2月, 2008 2 次提交
  25. 16 10月, 2007 3 次提交
  27. 11 5月, 2007 3 次提交
  29. 06 3月, 2007 1 次提交
  31. 09 2月, 2007 3 次提交
  33. 09 1月, 2007 1 次提交
  35. 20 12月, 2006 1 次提交
  37. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      由 David Howells 提交于 
      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: NDavid Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  39. 01 10月, 2006 1 次提交
  41. 03 8月, 2006 1 次提交
  43. 03 7月, 2006 1 次提交
  45. 29 6月, 2006 4 次提交