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ALSA: hda - Cache pin-cap values

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Added snd_hda_query_pin_caps() to read and cache pin-cap values
to avoid too frequently issuing the same verbs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2009-03-23 13:07:47 +01:00
parent 52ca15b7c0
commit 1327a32b87
5 changed files with 24 additions and 8 deletions
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7
sound/pci/hda/patch_sigmatel.c
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@@ -2537,8 +2537,7 @@ static int stac92xx_build_pcms(struct hda_codec *codec)
static unsigned int stac92xx_get_vref(struct hda_codec *codec, hda_nid_t nid)
{
unsigned int pincap = snd_hda_param_read(codec, nid,
AC_PAR_PIN_CAP);
unsigned int pincap = snd_hda_query_pin_caps(codec, nid);
pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
if (pincap & AC_PINCAP_VREF_100)
return AC_PINCTL_VREF_100;
@@ -2799,7 +2798,7 @@ static hda_nid_t check_line_out_switch(struct hda_codec *codec)
if (cfg->line_out_type != AUTO_PIN_LINE_OUT)
return 0;
nid = cfg->input_pins[AUTO_PIN_LINE];
pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
pincap = snd_hda_query_pin_caps(codec, nid);
if (pincap & AC_PINCAP_OUT)
return nid;
return 0;
@@ -2822,7 +2821,7 @@ static hda_nid_t check_mic_out_switch(struct hda_codec *codec)
/* some laptops have an internal analog microphone
* which can't be used as a output */
if (get_defcfg_connect(def_conf) != AC_JACK_PORT_FIXED) {
pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
pincap = snd_hda_query_pin_caps(codec, nid);
if (pincap & AC_PINCAP_OUT)
return nid;
}