From f567b78851d49a4887b9bb1a8b3cfad37da515c8 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 18 Jun 2018 17:26:12 +0200 Subject: ALSA: hda - Move mic mute LED helper to the generic parser MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the code for setting up and controlling the mic mute LED hook from dell-wmi helper to the generic parser, so that it can be referred from the multiple driver codes. No functional change. Tested-by: Pali Rohár Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_generic.c | 140 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) (limited to 'sound/pci/hda/hda_generic.c') diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index db773e219aaa..cdce9ce6b901 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -3899,6 +3899,146 @@ static int parse_mic_boost(struct hda_codec *codec) return 0; } +/* + * mic mute LED hook helpers + */ +enum { + MICMUTE_LED_ON, + MICMUTE_LED_OFF, + MICMUTE_LED_FOLLOW_CAPTURE, + MICMUTE_LED_FOLLOW_MUTE, +}; + +static void call_micmute_led_update(struct hda_codec *codec) +{ + struct hda_gen_spec *spec = codec->spec; + unsigned int val; + + switch (spec->micmute_led.led_mode) { + case MICMUTE_LED_ON: + val = 1; + break; + case MICMUTE_LED_OFF: + val = 0; + break; + case MICMUTE_LED_FOLLOW_CAPTURE: + val = spec->micmute_led.capture; + break; + case MICMUTE_LED_FOLLOW_MUTE: + default: + val = !spec->micmute_led.capture; + break; + } + + if (val == spec->micmute_led.led_value) + return; + spec->micmute_led.led_value = val; + if (spec->micmute_led.update) + spec->micmute_led.update(codec); +} + +static void update_micmute_led(struct hda_codec *codec, + struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct hda_gen_spec *spec = codec->spec; + + if (spec->micmute_led.old_hook) + spec->micmute_led.old_hook(codec, kcontrol, ucontrol); + + if (!ucontrol) + return; + if (!strcmp("Capture Switch", ucontrol->id.name) && + !ucontrol->id.index) { + /* TODO: How do I verify if it's a mono or stereo here? */ + spec->micmute_led.capture = (ucontrol->value.integer.value[0] || + ucontrol->value.integer.value[1]); + call_micmute_led_update(codec); + } +} + +static int micmute_led_mode_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static const char * const texts[] = { + "On", "Off", "Follow Capture", "Follow Mute", + }; + + return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts); +} + +static int micmute_led_mode_get(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; + + ucontrol->value.enumerated.item[0] = spec->micmute_led.led_mode; + return 0; +} + +static int micmute_led_mode_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; + unsigned int mode; + + mode = ucontrol->value.enumerated.item[0]; + if (mode > MICMUTE_LED_FOLLOW_MUTE) + mode = MICMUTE_LED_FOLLOW_MUTE; + if (mode == spec->micmute_led.led_mode) + return 0; + spec->micmute_led.led_mode = mode; + call_micmute_led_update(codec); + return 1; +} + +static const struct snd_kcontrol_new micmute_led_mode_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Mic Mute-LED Mode", + .info = micmute_led_mode_info, + .get = micmute_led_mode_get, + .put = micmute_led_mode_put, +}; + +/** + * snd_hda_gen_add_micmute_led - helper for setting up mic mute LED hook + * @codec: the HDA codec + * @hook: the callback for updating LED + * + * Called from the codec drivers for offering the mic mute LED controls. + * Only valid for a single ADC (or a single input). When established, it + * sets up cap_sync_hook and triggers the callback at each time when the + * capture mixer switch changes. The callback is supposed to update the LED + * accordingly. + * + * Returns 1 if the hook is established, 0 if skipped (no valid config), or + * a negative error code. + */ +int snd_hda_gen_add_micmute_led(struct hda_codec *codec, + void (*hook)(struct hda_codec *)) +{ + struct hda_gen_spec *spec = codec->spec; + + if (spec->num_adc_nids > 1 && !spec->dyn_adc_switch) { + codec_dbg(codec, + "Skipping micmute LED control due to several ADCs"); + return 0; + } + + spec->micmute_led.led_mode = MICMUTE_LED_FOLLOW_MUTE; + spec->micmute_led.capture = 0; + spec->micmute_led.led_value = 0; + spec->micmute_led.old_hook = spec->cap_sync_hook; + spec->micmute_led.update = hook; + spec->cap_sync_hook = update_micmute_led; + if (!snd_hda_gen_add_kctl(spec, NULL, &micmute_led_mode_ctl)) + return -ENOMEM; + return 1; +} +EXPORT_SYMBOL_GPL(snd_hda_gen_add_micmute_led); + /* * parse digital I/Os and set up NIDs in BIOS auto-parse mode */ -- cgit v1.2.3