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ALSA: hda - Make user_pin overriding the driver setup

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Make user_pin overriding even the driver pincfg, e.g. the static / fixed
pin config table in patch_sigmatel.c.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-02-23 09:45:59 +01:00
parent 346ff70fdb
commit 5e7b8e0d87
2 changed files with 14 additions and 5 deletions
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3
Documentation/sound/alsa/HD-Audio.txt
View file

@ -380,7 +380,8 @@ user_pin_configs::
Shows the pin default config values to override the BIOS setup.
Writing this (with two numbers, NID and value) appends the new
value. The given will be used instead of the initial BIOS value at
the next reconfiguration time.
the next reconfiguration time. Note that this config will override
even the driver pin configs, too.
reconfig::
Triggers the codec re-configuration. When any value is written to
this file, the driver re-initialize and parses the codec tree

16
sound/pci/hda/hda_codec.c
View file

@ -739,7 +739,9 @@ int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
hda_nid_t nid, unsigned int cfg)
{
struct hda_pincfg *pin;
unsigned int oldcfg;
oldcfg = snd_hda_codec_get_pincfg(codec, nid);
pin = look_up_pincfg(codec, list, nid);
if (!pin) {
pin = snd_array_new(list);
@ -748,7 +750,13 @@ int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
pin->nid = nid;
}
pin->cfg = cfg;
set_pincfg(codec, nid, cfg);
/* change only when needed; e.g. if the pincfg is already present
* in user_pins[], don't write it
*/
cfg = snd_hda_codec_get_pincfg(codec, nid);
if (oldcfg != cfg)
set_pincfg(codec, nid, cfg);
return 0;
}
@ -764,14 +772,14 @@ unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_pincfg *pin;
pin = look_up_pincfg(codec, &codec->driver_pins, nid);
if (pin)
return pin->cfg;
#ifdef CONFIG_SND_HDA_HWDEP
pin = look_up_pincfg(codec, &codec->user_pins, nid);
if (pin)
return pin->cfg;
#endif
pin = look_up_pincfg(codec, &codec->driver_pins, nid);
if (pin)
return pin->cfg;
pin = look_up_pincfg(codec, &codec->init_pins, nid);
if (pin)
return pin->cfg;