diff options
| author | Mengdong Lin <mengdong.lin@intel.com> | 2013-02-08 17:09:31 -0500 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-02-08 12:22:50 +0100 |
| commit | a15d05db41b1d5c9f2c3af11dfbfd46818cc64ba (patch) | |
| tree | 48e0ba894d7f59b8ff0b8014e6ca566c12b93043 /sound/pci/hda/hda_codec.c | |
| parent | 4eea30914facd2c99061cd70e5b05d3c76c743a2 (diff) | |
ALSA: hda - Support rereading widgets under the function group
A codec may allow software to hide some unused pin/cvt widgets.
Sometimes BIOS does not enable the hidden widgets properly although they are
needed for the board. Thus the driver need to enable them as a board-specific
fixup and the whole tree will change.
This patch implements a common code for rereading codec widgets. So the fixup
code can call it after enabling the hidden widgets.
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 3c925145c11..e80f8356829 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1441,6 +1441,30 @@ int snd_hda_codec_new(struct hda_bus *bus, } EXPORT_SYMBOL_HDA(snd_hda_codec_new); +int snd_hda_codec_update_widgets(struct hda_codec *codec) +{ + hda_nid_t fg; + int err; + + /* Assume the function group node does not change, + * only the widget nodes may change. + */ + kfree(codec->wcaps); + fg = codec->afg ? codec->afg : codec->mfg; + err = read_widget_caps(codec, fg); + if (err < 0) { + snd_printk(KERN_ERR "hda_codec: cannot malloc\n"); + return err; + } + + snd_array_free(&codec->init_pins); + err = read_pin_defaults(codec); + + return err; +} +EXPORT_SYMBOL_HDA(snd_hda_codec_update_widgets); + + /** * snd_hda_codec_configure - (Re-)configure the HD-audio codec * @codec: the HDA codec |