From 739572a545b8ab6faf9e266c3ed83ea202073699 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Thu, 20 Sep 2012 15:41:21 +0200 Subject: [PATCH] ALSA: hda - use both input paths on Conexant auto parser On the Thinkpad W520 - and probably several other machines with Conexant 506x chips - the Dock Mic and Mic are connected to the same two selector nodes. This patch will make Dock Mic take one selector node and Mic take the other, when possible. Without the patch, both paths would take the first selector, leading to the normal Mic's volume being controlled by "Dock Mic Boost". (On other machines, this could instead fixup similar problems between Mic and Line In, for example.) BugLink: https://bugs.launchpad.net/bugs/1037642 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index b871b01332de..c03d3b8e42b2 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -3540,8 +3540,9 @@ static int __select_input_connection(struct hda_codec *codec, hda_nid_t mux, hda_nid_t pin, hda_nid_t *srcp, bool do_select, int depth) { + struct conexant_spec *spec = codec->spec; hda_nid_t conn[HDA_MAX_NUM_INPUTS]; - int i, nums; + int startidx, i, nums; switch (get_wcaps_type(get_wcaps(codec, mux))) { case AC_WID_AUD_IN: @@ -3565,14 +3566,25 @@ static int __select_input_connection(struct hda_codec *codec, hda_nid_t mux, depth++; if (depth == 2) return -1; + + /* Try to rotate around connections to avoid one boost controlling + another input path as well */ + startidx = 0; + for (i = 0; i < spec->private_imux.num_items; i++) + if (spec->imux_info[i].pin == pin) { + startidx = i; + break; + } + for (i = 0; i < nums; i++) { - int ret = __select_input_connection(codec, conn[i], pin, srcp, + int j = (i + startidx) % nums; + int ret = __select_input_connection(codec, conn[j], pin, srcp, do_select, depth); if (ret >= 0) { if (do_select) snd_hda_codec_write(codec, mux, 0, - AC_VERB_SET_CONNECT_SEL, i); - return i; + AC_VERB_SET_CONNECT_SEL, j); + return j; } } return -1;