[alsa-devel] [PATCH 0/3] Support auto-mute via amp in HD-audio generic driver
Hi,
this is a patch set to add the support of the headphone/line-out auto- mute via amp mute instead of pin-control values. The motivation of this is that we found that some machines don't honor the pin-control values but just ignore and keep speaker on. So, instead of muting via the pin control value, we need to mute via the amp value of the pin.
The mechanism to add an extra mute check in software is relatively easy: just add the new mute flag and check it in the mixer put callback. The only tricky part is to update all relevant controls by jack plug/unplug or the auto-mute switch. For that, the new helper function, snd_ctl_vmaster_sync(), is added, so that the codec driver just updates the bit mask and call the sync at the last.
There should be no behavior change unless the new flag is set.
[PATCH 1/3] ALSA: vmaster: Add snd_ctl_sync_vmaster() helper function [PATCH 2/3] ALSA: hda - Add auto_mute_via_amp flag to generic parser [PATCH 3/3] ALSA: hda - Use auto_mute_via_amp=1 for VT1708
Takashi
Introduce a new helper function, snd_ctl_sync_vmaster(), which updates the slave put callbacks forcibly as well as calling the hook. This will be used in the upcoming patch in HD-audio codec driver for toggling the mute in vmaster slaves.
Along with the new function, the old snd_ctl_sync_vmaster_hook() is replaced as a macro calling with the argument hook_only=true.
Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/control.h | 3 ++- sound/core/vmaster.c | 65 ++++++++++++++++++++++++++++++++++--------------- 2 files changed, 47 insertions(+), 21 deletions(-)
diff --git a/include/sound/control.h b/include/sound/control.h index 34bc93d..5358892 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -233,7 +233,8 @@ snd_ctl_add_slave_uncached(struct snd_kcontrol *master, int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl, void (*hook)(void *private_data, int), void *private_data); -void snd_ctl_sync_vmaster_hook(struct snd_kcontrol *kctl); +void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only); +#define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true)
/* * Helper functions for jack-detection controls diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index 02f90b4..5df8dc2 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -310,20 +310,10 @@ static int master_get(struct snd_kcontrol *kcontrol, return 0; }
-static int master_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) +static int sync_slaves(struct link_master *master, int old_val, int new_val) { - struct link_master *master = snd_kcontrol_chip(kcontrol); struct link_slave *slave; struct snd_ctl_elem_value *uval; - int err, old_val; - - err = master_init(master); - if (err < 0) - return err; - old_val = master->val; - if (ucontrol->value.integer.value[0] == old_val) - return 0;
uval = kmalloc(sizeof(*uval), GFP_KERNEL); if (!uval) @@ -332,11 +322,33 @@ static int master_put(struct snd_kcontrol *kcontrol, master->val = old_val; uval->id = slave->slave.id; slave_get_val(slave, uval); - master->val = ucontrol->value.integer.value[0]; + master->val = new_val; slave_put_val(slave, uval); } kfree(uval); - if (master->hook && !err) + return 0; +} + +static int master_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct link_master *master = snd_kcontrol_chip(kcontrol); + int err, new_val, old_val; + bool first_init; + + err = master_init(master); + if (err < 0) + return err; + first_init = err; + old_val = master->val; + new_val = ucontrol->value.integer.value[0]; + if (new_val == old_val) + return 0; + + err = sync_slaves(master, old_val, new_val); + if (err < 0) + return err; + if (master->hook && first_init) master->hook(master->hook_private_data, master->val); return 1; } @@ -442,20 +454,33 @@ int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kcontrol, EXPORT_SYMBOL_GPL(snd_ctl_add_vmaster_hook);
/** - * snd_ctl_sync_vmaster_hook - Sync the vmaster hook + * snd_ctl_sync_vmaster - Sync the vmaster slaves and hook * @kcontrol: vmaster kctl element + * @hook_only: sync only the hook * - * Call the hook function to synchronize with the current value of the given - * vmaster element. NOP when NULL is passed to @kcontrol or the hook doesn't - * exist. + * Forcibly call the put callback of each slave and call the hook function + * to synchronize with the current value of the given vmaster element. + * NOP when NULL is passed to @kcontrol. */ -void snd_ctl_sync_vmaster_hook(struct snd_kcontrol *kcontrol) +void snd_ctl_sync_vmaster(struct snd_kcontrol *kcontrol, bool hook_only) { struct link_master *master; + bool first_init = false; + if (!kcontrol) return; master = snd_kcontrol_chip(kcontrol); - if (master->hook) + if (!hook_only) { + int err = master_init(master); + if (err < 0) + return; + first_init = err; + err = sync_slaves(master, master->val, master->val); + if (err < 0) + return; + } + + if (master->hook && !first_init) master->hook(master->hook_private_data, master->val); } -EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster_hook); +EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster);
Add a new flag, auto_mute_via_amp, to determine the behavior of the headphone / line-out auto-mute. When this flag is set, the generic driver mutes the speaker and line outputs via the amp mute of each pin, instead of changing the pin control values.
This is introduced for devices that don't work expectedly with the pin control values; for example, some devices are known to keep enabling the speaker outputs no matter which pin control values are set on the speaker pins.
The driver doesn't check actually whether the pins have the output amp caps, but assumes that the proper mixer (mute) controls are created on all these pins. If not the case, you can't use this flag for your device.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/hda/hda_generic.c | 47 ++++++++++++++++++++++++++++++++++++++++++++- sound/pci/hda/hda_generic.h | 4 ++++ 2 files changed, 50 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index 4b1524a..4649473 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -133,6 +133,9 @@ static void parse_user_hints(struct hda_codec *codec) val = snd_hda_get_bool_hint(codec, "line_in_auto_switch"); if (val >= 0) spec->line_in_auto_switch = !!val; + val = snd_hda_get_bool_hint(codec, "auto_mute_via_amp"); + if (val >= 0) + spec->auto_mute_via_amp = !!val; val = snd_hda_get_bool_hint(codec, "need_dac_fix"); if (val >= 0) spec->need_dac_fix = !!val; @@ -808,6 +811,9 @@ static void resume_path_from_idx(struct hda_codec *codec, int path_idx) * Helper functions for creating mixer ctl elements */
+static int hda_gen_mixer_mute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); + enum { HDA_CTL_WIDGET_VOL, HDA_CTL_WIDGET_MUTE, @@ -815,7 +821,15 @@ enum { }; static const struct snd_kcontrol_new control_templates[] = { HDA_CODEC_VOLUME(NULL, 0, 0, 0), - HDA_CODEC_MUTE(NULL, 0, 0, 0), + /* only the put callback is replaced for handling the special mute */ + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .subdevice = HDA_SUBDEV_AMP_FLAG, + .info = snd_hda_mixer_amp_switch_info, + .get = snd_hda_mixer_amp_switch_get, + .put = hda_gen_mixer_mute_put, /* replaced */ + .private_value = HDA_COMPOSE_AMP_VAL(0, 3, 0, 0), + }, HDA_BIND_MUTE(NULL, 0, 0, 0), };
@@ -922,6 +936,23 @@ static int add_stereo_sw(struct hda_codec *codec, const char *pfx, return add_sw_ctl(codec, pfx, cidx, chs, path); }
+/* playback mute control with the software mute bit check */ +static int hda_gen_mixer_mute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct hda_codec *codec = snd_kcontrol_chip(kcontrol); + struct hda_gen_spec *spec = codec->spec; + + if (spec->auto_mute_via_amp) { + hda_nid_t nid = get_amp_nid(kcontrol); + bool enabled = !((spec->mute_bits >> nid) & 1); + ucontrol->value.integer.value[0] &= enabled; + ucontrol->value.integer.value[1] &= enabled; + } + + return snd_hda_mixer_amp_switch_put(kcontrol, ucontrol); +} + /* any ctl assigned to the path with the given index? */ static bool path_has_mixer(struct hda_codec *codec, int path_idx, int ctl_type) { @@ -3719,6 +3750,16 @@ static void do_automute(struct hda_codec *codec, int num_pins, hda_nid_t *pins, unsigned int val, oldval; if (!nid) break; + + if (spec->auto_mute_via_amp) { + if (mute) + spec->mute_bits |= (1ULL << nid); + else + spec->mute_bits &= ~(1ULL << nid); + set_pin_eapd(codec, nid, !mute); + continue; + } + oldval = snd_hda_codec_get_pin_target(codec, nid); if (oldval & PIN_IN) continue; /* no mute for inputs */ @@ -3786,6 +3827,10 @@ static void call_update_outputs(struct hda_codec *codec) spec->automute_hook(codec); else snd_hda_gen_update_outputs(codec); + + /* sync the whole vmaster slaves to reflect the new auto-mute status */ + if (spec->auto_mute_via_amp && !codec->bus->shutdown) + snd_ctl_sync_vmaster(spec->vmaster_mute.sw_kctl); }
/* standard HP-automute helper */ diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h index 7620031..e199a85 100644 --- a/sound/pci/hda/hda_generic.h +++ b/sound/pci/hda/hda_generic.h @@ -209,6 +209,7 @@ struct hda_gen_spec { unsigned int master_mute:1; /* master mute over all */ unsigned int keep_vref_in_automute:1; /* Don't clear VREF in automute */ unsigned int line_in_auto_switch:1; /* allow line-in auto switch */ + unsigned int auto_mute_via_amp:1; /* auto-mute via amp instead of pinctl */
/* parser behavior flags; set before snd_hda_gen_parse_auto_config() */ unsigned int suppress_auto_mute:1; /* suppress input jack auto mute */ @@ -237,6 +238,9 @@ struct hda_gen_spec { unsigned int have_aamix_ctl:1; unsigned int hp_mic_jack_modes:1;
+ /* additional mute flags (only effective with auto_mute_via_amp=1) */ + u64 mute_bits; + /* badness tables for output path evaluations */ const struct badness_table *main_out_badness; const struct badness_table *extra_out_badness;
We've got bug report wrt many machines with VT1708 (e.g. IBM POS machines) showing the broken auto-mute behavior. It turned out that the problem is that the pin control values of the speaker and line-out pins are completely ignored. As a workaround, let's use the newly introduced feature of the generic parser, to control the mute via amp on pins.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/hda/patch_via.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index dcebf3c..e2481ba 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -741,6 +741,8 @@ static int patch_vt1708(struct hda_codec *codec) /* don't support the input jack switching due to lack of unsol event */ /* (it may work with polling, though, but it needs testing) */ spec->gen.suppress_auto_mic = 1; + /* Some machines show the broken speaker mute */ + spec->gen.auto_mute_via_amp = 1;
/* Add HP and CD pin config connect bit re-config action */ vt1708_set_pinconfig_connect(codec, VT1708_HP_PIN_NID);
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Takashi Iwai