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  1. 19 2月, 2009 1 次提交
    • C
      sound: virtuoso: revert "do not overwrite EEPROM on Xonar D2/D2X" · 6ce6c473
      由 Clemens Ladisch 提交于 
      This reverts commit 7e86c0e6 ("do not
overwrite EEPROM on Xonar D2/D2X") because it did not actually help with
the problem.

More user reports show that the overwriting of the EEPROM is not
triggered by using this driver but by installing Linux, and that the
installation of any other operating system (even one without any CMI8788
driver) has the same effect.  In other words, the presence of this
driver does not have any effect on the occurrence of the error.  (So
far, the available evidence seems to point to a BIOS bug.)

Furthermore, it turns out that the EEPROM chip is protected against
stray write commands by the command format and by requiring a separate
write-enable command, so the error scenario in the previous commit (that
SPI writes can be misinterpreted as an EEPROM write command) is not even
theoretically possible.

The mixer control that was removed as a consequence of the previous
commit can only be partially emulated in userspace, which also means it
cannot be seen be the in-kernel OSS API emulation, so it is better to
revert that change.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      6ce6c473
  3. 19 1月, 2009 2 次提交
  5. 15 1月, 2009 1 次提交
    • C
      sound: virtuoso: do not overwrite EEPROM on Xonar D2/D2X · 7e86c0e6
      由 Clemens Ladisch 提交于 
      On the Asus Xonar D2 and D2X models, the SPI chip select signal for the
fourth DAC shares its pin with the serial clock for the EEPROM that
contains the PCI subdevice ID values.  It appears that when DAC
registers are written and some other unknown conditions occur (probably
noise on the EEPROM's chip select line), the EEPROM gets overwritten
with garbage, which makes it impossible to properly detect the card
later.

Therefore, we better avoid DAC register writes and make sure that the
driver works with the DAC's registers' default values.  Consequently,
the sample format is now I2S instead of left-justified (no user-visible
change), and the DAC's volume/mute registers cannot be used anymore
(volume changes are now done by the software volume plugin).
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      7e86c0e6
  7. 28 11月, 2008 1 次提交
  9. 24 9月, 2008 1 次提交
  11. 22 9月, 2008 16 次提交
  13. 29 8月, 2008 1 次提交
    • C
      ALSA: oxygen: fix distorted output on AK4396-based cards · df91bc23
      由 Clemens Ladisch 提交于 
      When changing the sample rate, the CMI8788's master clock output becomes
unstable for a short time.  The AK4396 needs the master clock to do SPI
writes, so writing to an AK4396 control register directly after a sample
rate change will garble the value.  In our case, this leads to the DACs
being misconfigured to I2S sample format, which results in a wrong
output level and horrible distortions on samples louder than -6 dB.

To fix this, we need to wait until the new master clock signal has
become stable before doing SPI writes.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      df91bc23
  15. 26 8月, 2008 1 次提交
  17. 14 8月, 2008 1 次提交
  19. 16 6月, 2008 1 次提交
  21. 19 5月, 2008 9 次提交
  23. 24 4月, 2008 5 次提交