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Message-Id: <B11E093E-6A30-4820-AC0E-C2887F5462F2@canonical.com>
Date: Tue, 16 Jun 2020 16:36:41 +0800
From: Kai-Heng Feng <kai.heng.feng@...onical.com>
To: Takashi Iwai <tiwai@...e.de>
Cc: tiwai@...e.com, Jaroslav Kysela <perex@...ex.cz>,
Michał Mirosław <mirq-linux@...e.qmqm.pl>,
Wenwen Wang <wenwen@...uga.edu>,
Hui Wang <hui.wang@...onical.com>,
Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
Kailang Yang <kailang@...ltek.com>,
Jian-Hong Pan <jian-hong@...lessm.com>,
Tomas Espeleta <tomas.espeleta@...il.com>,
Thomas Hebb <tommyhebb@...il.com>,
"moderated list:SOUND" <alsa-devel@...a-project.org>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] ALSA: hda: Make codec controlled LED support more
generic
> On Jun 16, 2020, at 16:01, Takashi Iwai <tiwai@...e.de> wrote:
>
> On Tue, 16 Jun 2020 06:46:58 +0200,
> Kai-Heng Feng wrote:
>>
>> Currently, only HDA codec GPIO controlled LED class is supported, and
>> only via platform specific quirk.
>>
>> There are systems that control LED via COEF instead of GPIO, and to
>> support those systems, move the LED class registration to
>> snd_hda_gen_add_micmute_led(), so all systems can facilitate the same
>> interface.
>
> This will result in creating the led cdev always when the mic-mute LED
> feature is used, not only for HP but also for Dell and Huawei.
> Is this the intended result?
Ok, I can see there are other vendors calling snd_hda_gen_fixup_micmute_led() to create LED class.
And no, that's not the intended result.
I guess a chained function can be a better approach.
I'll send another series.
Kai-Heng
>
>
> thanks,
>
> Takashi
>
>>
>> In addition to that, add LED_CORE_SUSPENDRESUME flag since some systems
>> don't restore the LED properly after suspend.
>>
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
>> ---
>> sound/pci/hda/hda_generic.c | 28 ++++++++++++++++++++++++++++
>> sound/pci/hda/patch_realtek.c | 30 ------------------------------
>> 2 files changed, 28 insertions(+), 30 deletions(-)
>>
>> diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
>> index f4e9d9445e18..4242407734c0 100644
>> --- a/sound/pci/hda/hda_generic.c
>> +++ b/sound/pci/hda/hda_generic.c
>> @@ -4006,6 +4006,28 @@ static const struct snd_kcontrol_new micmute_led_mode_ctl = {
>> *
>> * Returns 0 if the hook is established or a negative error code.
>> */
>> +
>> +#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
>> +static int micmute_led_set(struct led_classdev *led_cdev,
>> + enum led_brightness brightness)
>> +{
>> + struct hda_codec *codec = dev_to_hda_codec(led_cdev->dev->parent);
>> + struct hda_gen_spec *spec = codec->spec;
>> +
>> + spec->micmute_led.led_mode = !brightness;
>> + call_micmute_led_update(codec);
>> + return 0;
>> +}
>> +
>> +static struct led_classdev micmute_led_cdev = {
>> + .name = "hda::micmute",
>> + .max_brightness = 1,
>> + .brightness_set_blocking = micmute_led_set,
>> + .default_trigger = "audio-micmute",
>> + .flags = LED_CORE_SUSPENDRESUME,
>> +};
>> +#endif
>> +
>> int snd_hda_gen_add_micmute_led(struct hda_codec *codec,
>> void (*hook)(struct hda_codec *))
>> {
>> @@ -4019,6 +4041,12 @@ int snd_hda_gen_add_micmute_led(struct hda_codec *codec,
>> spec->cap_sync_hook = update_micmute_led;
>> if (!snd_hda_gen_add_kctl(spec, NULL, &micmute_led_mode_ctl))
>> return -ENOMEM;
>> +
>> +#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
>> + micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
>> + if (devm_led_classdev_register(&codec->core.dev, &micmute_led_cdev))
>> + codec_warn(codec, "failed to register micmute LED\n");
>> +#endif
>> return 0;
>> }
>> EXPORT_SYMBOL_GPL(snd_hda_gen_add_micmute_led);
>> diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
>> index 6d73f8beadb6..cead44a6c6cd 100644
>> --- a/sound/pci/hda/patch_realtek.c
>> +++ b/sound/pci/hda/patch_realtek.c
>> @@ -4109,26 +4109,6 @@ static void alc_gpio_micmute_update(struct hda_codec *codec)
>> spec->gen.micmute_led.led_value);
>> }
>>
>> -#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
>> -static int micmute_led_set(struct led_classdev *led_cdev,
>> - enum led_brightness brightness)
>> -{
>> - struct hda_codec *codec = dev_to_hda_codec(led_cdev->dev->parent);
>> - struct alc_spec *spec = codec->spec;
>> -
>> - alc_update_gpio_led(codec, spec->gpio_mic_led_mask,
>> - spec->micmute_led_polarity, !!brightness);
>> - return 0;
>> -}
>> -
>> -static struct led_classdev micmute_led_cdev = {
>> - .name = "hda::micmute",
>> - .max_brightness = 1,
>> - .brightness_set_blocking = micmute_led_set,
>> - .default_trigger = "audio-micmute",
>> -};
>> -#endif
>> -
>> /* setup mute and mic-mute GPIO bits, add hooks appropriately */
>> static void alc_fixup_hp_gpio_led(struct hda_codec *codec,
>> int action,
>> @@ -4136,9 +4116,6 @@ static void alc_fixup_hp_gpio_led(struct hda_codec *codec,
>> unsigned int micmute_mask)
>> {
>> struct alc_spec *spec = codec->spec;
>> -#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
>> - int err;
>> -#endif
>>
>> alc_fixup_gpio(codec, action, mute_mask | micmute_mask);
>>
>> @@ -4151,13 +4128,6 @@ static void alc_fixup_hp_gpio_led(struct hda_codec *codec,
>> if (micmute_mask) {
>> spec->gpio_mic_led_mask = micmute_mask;
>> snd_hda_gen_add_micmute_led(codec, alc_gpio_micmute_update);
>> -
>> -#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
>> - micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
>> - err = devm_led_classdev_register(&codec->core.dev, &micmute_led_cdev);
>> - if (err)
>> - codec_warn(codec, "failed to register micmute LED\n");
>> -#endif
>> }
>> }
>>
>> --
>> 2.17.1
>>
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