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ALSA: hda/realtek - Fix ADC assignment with a shared HP/Mic pin 

The recent Realtek driver tries to assign an extra input via the
headphone plug when only a single input source is found.  The code
worked on Samsung Q1, but it broke ASUS 1015 where the mic is a
digital-mic and only a specific ADC works.

This patch fixes the assignment of ADC in the shared mic/hp case.
Instead of assuming the single ADC at first, reduce the ADCs after
trying to assign both mic and HP pins.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42973

Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-03-22 14:36:50 +01:00
parent 6681bc0deb
commit 26acaf0855
1 changed files with 7 additions and 4 deletions
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11
sound/pci/hda/patch_realtek.c
View File

@ -2717,9 +2717,6 @@ static int alc_auto_fill_adc_caps(struct hda_codec *codec)
int max_nums = ARRAY_SIZE(spec->private_adc_nids);
int i, nums = 0;
if (spec->shared_mic_hp)
max_nums = 1; /* no multi streams with the shared HP/mic */
nid = codec->start_nid;
for (i = 0; i < codec->num_nodes; i++, nid++) {
hda_nid_t src;
@ -4076,6 +4073,7 @@ static void alc_remove_invalid_adc_nids(struct hda_codec *codec)
if (spec->dyn_adc_switch)
return;
again:
nums = 0;
for (n = 0; n < spec->num_adc_nids; n++) {
hda_nid_t cap = spec->private_capsrc_nids[n];
@ -4096,6 +4094,11 @@ static void alc_remove_invalid_adc_nids(struct hda_codec *codec)
if (!nums) {
/* check whether ADC-switch is possible */
if (!alc_check_dyn_adc_switch(codec)) {
if (spec->shared_mic_hp) {
spec->shared_mic_hp = 0;
spec->private_imux[0].num_items = 1;
goto again;
}
printk(KERN_WARNING "hda_codec: %s: no valid ADC found;"
" using fallback 0x%x\n",
codec->chip_name, spec->private_adc_nids[0]);
@ -4113,7 +4116,7 @@ static void alc_remove_invalid_adc_nids(struct hda_codec *codec)
if (spec->auto_mic)
alc_auto_mic_check_imux(codec); /* check auto-mic setups */
else if (spec->input_mux->num_items == 1)
else if (spec->input_mux->num_items == 1 || spec->shared_mic_hp)
spec->num_adc_nids = 1; /* reduce to a single ADC */
}