A new helper, snd_hda_gen_add_micmute_led_cdev(), is introduced here
for creating a LED classdev and setting up the hook to the capture
control for controlling the mic-mute LED to follow the capture switch
change. This will replace the existing users of
snd_hda_gen_add_micmute_led() in later patches.
Also, introduce a new kconfig CONFIG_SND_HDA_GENERIC_LEDS, to indicate
the usage of mute / mic-mute LED helpers. It's selected by the codec
drivers (Realtek, Conexant and Sigmatel), while it selects the
necessary LED class dependencies.
Tested-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/pci/hda/Kconfig | 9 +++++++++
sound/pci/hda/hda_generic.c | 47 +++++++++++++++++++++++++++++++++++++++++--
sound/pci/hda/hda_generic.h | 5 +++++
sound/pci/hda/patch_realtek.c | 30 +--------------------------
4 files changed, 60 insertions(+), 31 deletions(-)
diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig
index 7ba542e45a3d..3f9abdaef7f5 100644
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -8,6 +8,9 @@ config SND_HDA
select SND_JACK
select SND_HDA_CORE
+config SND_HDA_GENERIC_LEDS
+ bool
+
config SND_HDA_INTEL
tristate "HD Audio PCI"
depends on SND_PCI
@@ -91,6 +94,7 @@ config SND_HDA_PATCH_LOADER
config SND_HDA_CODEC_REALTEK
tristate "Build Realtek HD-audio codec support"
select SND_HDA_GENERIC
+ select SND_HDA_GENERIC_LEDS
help
Say Y or M here to include Realtek HD-audio codec support in
snd-hda-intel driver, such as ALC880.
@@ -111,6 +115,7 @@ comment "Set to Y if you want auto-loading the codec driver"
config SND_HDA_CODEC_SIGMATEL
tristate "Build IDT/Sigmatel HD-audio codec support"
select SND_HDA_GENERIC
+ select SND_HDA_GENERIC_LEDS
help
Say Y or M here to include IDT (Sigmatel) HD-audio codec support in
snd-hda-intel driver, such as STAC9200.
@@ -155,6 +160,7 @@ comment "Set to Y if you want auto-loading the codec driver"
config SND_HDA_CODEC_CONEXANT
tristate "Build Conexant HD-audio codec support"
select SND_HDA_GENERIC
+ select SND_HDA_GENERIC_LEDS
help
Say Y or M here to include Conexant HD-audio codec support in
snd-hda-intel driver, such as CX20549.
@@ -215,6 +221,9 @@ comment "Set to Y if you want auto-loading the codec driver"
config SND_HDA_GENERIC
tristate "Enable generic HD-audio codec parser"
+ select LEDS_CLASS if SND_HDA_GENERIC_LEDS
+ select LEDS_TRIGGERS if SND_HDA_GENERIC_LEDS
+ select LEDS_TRIGGER_AUDIO if SND_HDA_GENERIC_LEDS
help
Say Y or M here to enable the generic HD-audio codec parser
in snd-hda-intel driver.
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index c95ccffbd0cf..419cfbd0dc5c 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -3887,6 +3887,7 @@ static int parse_mic_boost(struct hda_codec *codec)
return 0;
}
+#ifdef CONFIG_SND_HDA_GENERIC_LEDS
/*
* mic mute LED hook helpers
*/
@@ -3923,10 +3924,8 @@ static void call_micmute_led_update(struct hda_codec *codec)
spec->micmute_led.led_value = val;
if (spec->micmute_led.update)
spec->micmute_led.update(codec);
-#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
ledtrig_audio_set(LED_AUDIO_MICMUTE,
spec->micmute_led.led_value ? LED_ON : LED_OFF);
-#endif
}
static void update_micmute_led(struct hda_codec *codec,
@@ -4050,6 +4049,50 @@ void snd_hda_gen_fixup_micmute_led(struct hda_codec *codec,
}
EXPORT_SYMBOL_GPL(snd_hda_gen_fixup_micmute_led);
+/**
+ * snd_dha_gen_add_micmute_led_cdev - Create a LED classdev and enable as mic-mute LED
+ * @codec: the HDA codec
+ * @callback: the callback for LED classdev brightness_set_blocking
+ *
+ * Called from the codec drivers for offering the mic mute LED controls.
+ * This creates a LED classdev and sets up the cap_sync_hook that is called at
+ * each time when the capture mixer switch changes.
+ *
+ * When NULL is passed to @callback, no classdev is created but only the
+ * LED-trigger is set up.
+ *
+ * Returns 0 or a negative error.
+ */
+int snd_hda_gen_add_micmute_led_cdev(struct hda_codec *codec,
+ int (*callback)(struct led_classdev *,
+ enum led_brightness))
+{
+ int err;
+ struct led_classdev *cdev;
+
+ if (callback) {
+ cdev = devm_kzalloc(&codec->core.dev, sizeof(*cdev), GFP_KERNEL);
+ if (!cdev)
+ return -ENOMEM;
+
+ cdev->name = "hda::micmute";
+ cdev->max_brightness = 1;
+ cdev->default_trigger = "audio-micmute";
+ cdev->brightness_set_blocking = callback;
+ cdev->brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
+
+ err = devm_led_classdev_register(&codec->core.dev, cdev);
+ if (err) {
+ codec_warn(codec, "failed to create a mic-mute LED cdev\n");
+ return err;
+ }
+ }
+
+ return snd_hda_gen_add_micmute_led(codec, NULL);
+}
+EXPORT_SYMBOL_GPL(snd_hda_gen_add_micmute_led_cdev);
+#endif /* CONFIG_SND_HDA_GENERIC_LEDS */
+
/*
* parse digital I/Os and set up NIDs in BIOS auto-parse mode
*/
diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h
index fb9f1a90238b..f56bc8da20b2 100644
--- a/sound/pci/hda/hda_generic.h
+++ b/sound/pci/hda/hda_generic.h
@@ -8,6 +8,8 @@
#ifndef __SOUND_HDA_GENERIC_H
#define __SOUND_HDA_GENERIC_H
+#include <linux/leds.h>
+
/* table entry for multi-io paths */
struct hda_multi_io {
hda_nid_t pin; /* multi-io widget pin NID */
@@ -357,5 +359,8 @@ int snd_hda_gen_add_micmute_led(struct hda_codec *codec,
void (*hook)(struct hda_codec *));
void snd_hda_gen_fixup_micmute_led(struct hda_codec *codec,
const struct hda_fixup *fix, int action);
+int snd_hda_gen_add_micmute_led_cdev(struct hda_codec *codec,
+ int (*callback)(struct led_classdev *,
+ enum led_brightness));
#endif /* __SOUND_HDA_GENERIC_H */
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 6d73f8beadb6..1d0fe9a0983f 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4100,16 +4100,6 @@ static void alc_fixup_gpio_mute_hook(void *private_data, int enabled)
}
/* turn on/off mic-mute LED via GPIO per capture hook */
-static void alc_gpio_micmute_update(struct hda_codec *codec)
-{
- struct alc_spec *spec = codec->spec;
-
- alc_update_gpio_led(codec, spec->gpio_mic_led_mask,
- spec->micmute_led_polarity,
- 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)
{
@@ -4121,14 +4111,6 @@ static int micmute_led_set(struct led_classdev *led_cdev,
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 +4118,6 @@ 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);
@@ -4150,14 +4129,7 @@ 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
+ snd_hda_gen_add_micmute_led_cdev(codec, micmute_led_set);
}
}
--
2.16.4
