Previously, OLPC support for the mic extensions was only enabled in the
ALSA driver if CONFIG_OLPC and CONFIG_MGEODE_LX were both set. This was
because the old geode GPIO code was written in a manner that assumed
CONFIG_MGEODE_LX. With the new cs553x-gpio driver, this is no longer the
case; as such, we can drop the requirement on CONFIG_MGEODE_LX and instead
include a requirement on GPIOLIB.
We use the generic GPIO API rather than the cs553x-specific API.
Signed-off-by: Andres Salomon <dilinger@collabora.co.uk>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- add copyright info to _olpc.c
- minor layout fixes
- make Makefile more concise
- silence a warning
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Always turn off mic bias; the MIC LED should never come on when the
driver is first loaded.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This drops the AD1888 V_REFOUT control, and replaces it with a MIC Bias
Enable control. It also moves the MIC bias enabling into a separate
function.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Checking the HPF register is irrelevant; HPF is secondary to the AI mode.
Instead, check for Analog Input mode via GPIO.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Previously, we had two separate controls; there's no need to have AD1888's
HPF control, so drop it if we're on an OLPC machine. Also, as per Arjun's
request, rename OLPC's Analog Input Switch control to "DC Mode Enable".
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
We shouldn't be touching V_REFOUT when we toggle HPF/analog input, so just
drop that code.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fix an audible pop described in <http://dev.laptop.org/ticket/977>. Originally
based upon fixes by Mitch Bradley and Chris Ball.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Use basic infrastructure code; geode_gpio* (rather than indexed i/o
EC access), and do an OLPC machine check in olpc_quirk.
[dilinger@debian.org: don't return failure in olpc_quirks if !OLPC]
[dilinger@debian.org: drop the <B2 workarounds; those machines are EOL'd]
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Andres Salomon <dilinger@debian.org>
This is a 2nd cut at adding support for OLPC analog input.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Andres Salomon <dilinger@debian.org>
