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Subject[022/104] ALSA: hda - Fix jack-detection control of VT1708
3.1-stable review patch.  If anyone has any objections, please let me know.

------------------
From: Takashi Iwai <tiwai@suse.de>

commit 187d333edc0a8e1bb507900ce89853ffe3bd2c84 upstream.

VT1708 has no support for unsolicited events per jack-plug, the driver
implements the workq for polling the jack-detection. The mixer element
"Jack Detect" was supposed to control this behavior on/off, but this
doesn't work properly as is now. The workq is always started and the
HP automute is always enabled.

This patch fixes the jack-detect control behavior by triggering / stopping
the work appropriately at the state change. Also the work checks the
internal state to continue scheduling or not.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
sound/pci/hda/patch_via.c | 76 ++++++++++++++++++++++++++--------------------
1 file changed, 43 insertions(+), 33 deletions(-)
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -207,6 +207,7 @@ struct via_spec {
/* work to check hp jack state */
struct hda_codec *codec;
struct delayed_work vt1708_hp_work;
+ int hp_work_active;
int vt1708_jack_detect;
int vt1708_hp_present;

@@ -304,27 +305,35 @@ enum {
static void analog_low_current_mode(struct hda_codec *codec);
static bool is_aa_path_mute(struct hda_codec *codec);

-static void vt1708_start_hp_work(struct via_spec *spec)
+#define hp_detect_with_aa(codec) \
+ (snd_hda_get_bool_hint(codec, "analog_loopback_hp_detect") == 1 && \
+ !is_aa_path_mute(codec))
+
+static void vt1708_stop_hp_work(struct via_spec *spec)
{
if (spec->codec_type != VT1708 || spec->autocfg.hp_pins[0] == 0)
return;
- snd_hda_codec_write(spec->codec, 0x1, 0, 0xf81,
- !spec->vt1708_jack_detect);
- if (!delayed_work_pending(&spec->vt1708_hp_work))
- schedule_delayed_work(&spec->vt1708_hp_work,
- msecs_to_jiffies(100));
+ if (spec->hp_work_active) {
+ snd_hda_codec_write(spec->codec, 0x1, 0, 0xf81, 1);
+ cancel_delayed_work_sync(&spec->vt1708_hp_work);
+ spec->hp_work_active = 0;
+ }
}

-static void vt1708_stop_hp_work(struct via_spec *spec)
+static void vt1708_update_hp_work(struct via_spec *spec)
{
if (spec->codec_type != VT1708 || spec->autocfg.hp_pins[0] == 0)
return;
- if (snd_hda_get_bool_hint(spec->codec, "analog_loopback_hp_detect") == 1
- && !is_aa_path_mute(spec->codec))
- return;
- snd_hda_codec_write(spec->codec, 0x1, 0, 0xf81,
- !spec->vt1708_jack_detect);
- cancel_delayed_work_sync(&spec->vt1708_hp_work);
+ if (spec->vt1708_jack_detect &&
+ (spec->active_streams || hp_detect_with_aa(spec->codec))) {
+ if (!spec->hp_work_active) {
+ snd_hda_codec_write(spec->codec, 0x1, 0, 0xf81, 0);
+ schedule_delayed_work(&spec->vt1708_hp_work,
+ msecs_to_jiffies(100));
+ spec->hp_work_active = 1;
+ }
+ } else if (!hp_detect_with_aa(spec->codec))
+ vt1708_stop_hp_work(spec);
}

static void set_widgets_power_state(struct hda_codec *codec)
@@ -342,12 +351,7 @@ static int analog_input_switch_put(struc

set_widgets_power_state(codec);
analog_low_current_mode(snd_kcontrol_chip(kcontrol));
- if (snd_hda_get_bool_hint(codec, "analog_loopback_hp_detect") == 1) {
- if (is_aa_path_mute(codec))
- vt1708_start_hp_work(codec->spec);
- else
- vt1708_stop_hp_work(codec->spec);
- }
+ vt1708_update_hp_work(codec->spec);
return change;
}

@@ -1153,7 +1157,7 @@ static int via_playback_multi_pcm_prepar
spec->cur_dac_stream_tag = stream_tag;
spec->cur_dac_format = format;
mutex_unlock(&spec->config_mutex);
- vt1708_start_hp_work(spec);
+ vt1708_update_hp_work(spec);
return 0;
}

@@ -1173,7 +1177,7 @@ static int via_playback_hp_pcm_prepare(s
spec->cur_hp_stream_tag = stream_tag;
spec->cur_hp_format = format;
mutex_unlock(&spec->config_mutex);
- vt1708_start_hp_work(spec);
+ vt1708_update_hp_work(spec);
return 0;
}

@@ -1187,7 +1191,7 @@ static int via_playback_multi_pcm_cleanu
snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);
spec->active_streams &= ~STREAM_MULTI_OUT;
mutex_unlock(&spec->config_mutex);
- vt1708_stop_hp_work(spec);
+ vt1708_update_hp_work(spec);
return 0;
}

@@ -1202,7 +1206,7 @@ static int via_playback_hp_pcm_cleanup(s
snd_hda_codec_setup_stream(codec, spec->hp_dac_nid, 0, 0, 0);
spec->active_streams &= ~STREAM_INDEP_HP;
mutex_unlock(&spec->config_mutex);
- vt1708_stop_hp_work(spec);
+ vt1708_update_hp_work(spec);
return 0;
}

@@ -1632,7 +1636,8 @@ static void via_hp_automute(struct hda_c
int nums;
struct via_spec *spec = codec->spec;

- if (!spec->hp_independent_mode && spec->autocfg.hp_pins[0])
+ if (!spec->hp_independent_mode && spec->autocfg.hp_pins[0] &&
+ (spec->codec_type != VT1708 || spec->vt1708_jack_detect))
present = snd_hda_jack_detect(codec, spec->autocfg.hp_pins[0]);

if (spec->smart51_enabled)
@@ -2599,8 +2604,6 @@ static int vt1708_jack_detect_get(struct

if (spec->codec_type != VT1708)
return 0;
- spec->vt1708_jack_detect =
- !((snd_hda_codec_read(codec, 0x1, 0, 0xf84, 0) >> 8) & 0x1);
ucontrol->value.integer.value[0] = spec->vt1708_jack_detect;
return 0;
}
@@ -2610,18 +2613,22 @@ static int vt1708_jack_detect_put(struct
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
struct via_spec *spec = codec->spec;
- int change;
+ int val;

if (spec->codec_type != VT1708)
return 0;
- spec->vt1708_jack_detect = ucontrol->value.integer.value[0];
- change = (0x1 & (snd_hda_codec_read(codec, 0x1, 0, 0xf84, 0) >> 8))
- == !spec->vt1708_jack_detect;
- if (spec->vt1708_jack_detect) {
+ val = !!ucontrol->value.integer.value[0];
+ if (spec->vt1708_jack_detect == val)
+ return 0;
+ spec->vt1708_jack_detect = val;
+ if (spec->vt1708_jack_detect &&
+ snd_hda_get_bool_hint(codec, "analog_loopback_hp_detect") != 1) {
mute_aa_path(codec, 1);
notify_aa_path_ctls(codec);
}
- return change;
+ via_hp_automute(codec);
+ vt1708_update_hp_work(spec);
+ return 1;
}

static const struct snd_kcontrol_new vt1708_jack_detect_ctl = {
@@ -2758,6 +2765,7 @@ static int via_init(struct hda_codec *co
via_auto_init_unsol_event(codec);

via_hp_automute(codec);
+ vt1708_update_hp_work(spec);

return 0;
}
@@ -2774,7 +2782,9 @@ static void vt1708_update_hp_jack_state(
spec->vt1708_hp_present ^= 1;
via_hp_automute(spec->codec);
}
- vt1708_start_hp_work(spec);
+ if (spec->vt1708_jack_detect)
+ schedule_delayed_work(&spec->vt1708_hp_work,
+ msecs_to_jiffies(100));
}

static int get_mux_nids(struct hda_codec *codec)



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