ALSA: hda - Add patch module option

Added the patch module option to apply a "patch" as a firmware to
modify pin configurations or give additional hints to the driver
before actually initializing and configuring the codec.

This can be used as a workaround when the BIOS doesn't give sufficient
information or give wrong information that doesn't match with the real
hardware setup, until it's fixed statically in the driver via a quirk.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig
index 04438f1d682d..b8a77f9b0827 100644
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -46,6 +46,20 @@ config SND_HDA_INPUT_JACK
           Say Y here to enable the jack plugging notification via
           input layer.
 
+config SND_HDA_PATCH_LOADER
+        bool "Support initialization patch loading for HD-audio"
+        depends on EXPERIMENTAL
+        select FW_LOADER
+        select SND_HDA_HWDEP
+        select SND_HDA_RECONFIG
+        help
+          Say Y here to allow the HD-audio driver to load a pseudo
+          firmware file ("patch") for overriding the BIOS setup at
+          start up.  The "patch" file can be specified via patch module
+          option, such as patch=hda-init.
+
+          This option turns on hwdep and reconfig features automatically.
+
 config SND_HDA_CODEC_REALTEK
         bool "Build Realtek HD-audio codec support"
         default y