[alsa-devel] [PATCH 1/2] ALSA: hda - Move mic mute LED helper to the generic parser
Takashi Iwai
tiwai at suse.de
Thu Jun 21 13:53:59 CEST 2018
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 <pali.rohar at gmail.com>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
sound/pci/hda/dell_wmi_helper.c | 116 ++------------------------
sound/pci/hda/hda_generic.c | 140 ++++++++++++++++++++++++++++++++
sound/pci/hda/hda_generic.h | 16 ++++
3 files changed, 162 insertions(+), 110 deletions(-)
diff --git a/sound/pci/hda/dell_wmi_helper.c b/sound/pci/hda/dell_wmi_helper.c
index 1b48a8c19d28..8a7dbd1a7fbf 100644
--- a/sound/pci/hda/dell_wmi_helper.c
+++ b/sound/pci/hda/dell_wmi_helper.c
@@ -6,111 +6,18 @@
#if IS_ENABLED(CONFIG_DELL_LAPTOP)
#include <linux/dell-led.h>
-enum {
- MICMUTE_LED_ON,
- MICMUTE_LED_OFF,
- MICMUTE_LED_FOLLOW_CAPTURE,
- MICMUTE_LED_FOLLOW_MUTE,
-};
-
-static int dell_led_mode = MICMUTE_LED_FOLLOW_MUTE;
-static int dell_capture;
-static int dell_led_value;
static int (*dell_micmute_led_set_func)(int);
-static void (*dell_old_cap_hook)(struct hda_codec *,
- struct snd_kcontrol *,
- struct snd_ctl_elem_value *);
-
-static void call_micmute_led_update(void)
-{
- int val;
-
- switch (dell_led_mode) {
- case MICMUTE_LED_ON:
- val = 1;
- break;
- case MICMUTE_LED_OFF:
- val = 0;
- break;
- case MICMUTE_LED_FOLLOW_CAPTURE:
- val = dell_capture;
- break;
- case MICMUTE_LED_FOLLOW_MUTE:
- default:
- val = !dell_capture;
- break;
- }
-
- if (val == dell_led_value)
- return;
- dell_led_value = val;
- dell_micmute_led_set_func(dell_led_value);
-}
-
-static void update_dell_wmi_micmute_led(struct hda_codec *codec,
- struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- if (dell_old_cap_hook)
- dell_old_cap_hook(codec, kcontrol, ucontrol);
-
- if (!ucontrol || !dell_micmute_led_set_func)
- return;
- if (strcmp("Capture Switch", ucontrol->id.name) == 0 && ucontrol->id.index == 0) {
- /* TODO: How do I verify if it's a mono or stereo here? */
- dell_capture = (ucontrol->value.integer.value[0] ||
- ucontrol->value.integer.value[1]);
- call_micmute_led_update();
- }
-}
-static int dell_mic_mute_led_mode_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
+static void dell_micmute_update(struct hda_codec *codec)
{
- static const char * const texts[] = {
- "On", "Off", "Follow Capture", "Follow Mute",
- };
-
- return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
-}
+ struct hda_gen_spec *spec = codec->spec;
-static int dell_mic_mute_led_mode_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- ucontrol->value.enumerated.item[0] = dell_led_mode;
- return 0;
+ dell_micmute_led_set_func(spec->micmute_led.led_value);
}
-static int dell_mic_mute_led_mode_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- unsigned int mode;
-
- mode = ucontrol->value.enumerated.item[0];
- if (mode > MICMUTE_LED_FOLLOW_MUTE)
- mode = MICMUTE_LED_FOLLOW_MUTE;
- if (mode == dell_led_mode)
- return 0;
- dell_led_mode = mode;
- call_micmute_led_update();
- return 1;
-}
-
-static const struct snd_kcontrol_new dell_mic_mute_mode_ctls[] = {
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Mic Mute-LED Mode",
- .info = dell_mic_mute_led_mode_info,
- .get = dell_mic_mute_led_mode_get,
- .put = dell_mic_mute_led_mode_put,
- },
- {}
-};
-
static void alc_fixup_dell_wmi(struct hda_codec *codec,
const struct hda_fixup *fix, int action)
{
- struct alc_spec *spec = codec->spec;
bool removefunc = false;
if (action == HDA_FIXUP_ACT_PROBE) {
@@ -121,25 +28,14 @@ static void alc_fixup_dell_wmi(struct hda_codec *codec,
return;
}
- removefunc = true;
- if (dell_micmute_led_set_func(false) >= 0) {
- dell_led_value = 0;
- if (spec->gen.num_adc_nids > 1 && !spec->gen.dyn_adc_switch)
- codec_dbg(codec, "Skipping micmute LED control due to several ADCs");
- else {
- dell_old_cap_hook = spec->gen.cap_sync_hook;
- spec->gen.cap_sync_hook = update_dell_wmi_micmute_led;
- removefunc = false;
- add_mixer(spec, dell_mic_mute_mode_ctls);
- }
- }
-
+ removefunc = (dell_micmute_led_set_func(false) < 0) ||
+ (snd_hda_gen_add_micmute_led(codec,
+ dell_micmute_update) <= 0);
}
if (dell_micmute_led_set_func && (action == HDA_FIXUP_ACT_FREE || removefunc)) {
symbol_put(dell_micmute_led_set);
dell_micmute_led_set_func = NULL;
- dell_old_cap_hook = NULL;
}
}
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
*/
diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h
index 61772317de46..10123664fa61 100644
--- a/sound/pci/hda/hda_generic.h
+++ b/sound/pci/hda/hda_generic.h
@@ -86,6 +86,16 @@ struct badness_table {
extern const struct badness_table hda_main_out_badness;
extern const struct badness_table hda_extra_out_badness;
+struct hda_micmute_hook {
+ unsigned int led_mode;
+ unsigned int capture;
+ unsigned int led_value;
+ void (*update)(struct hda_codec *codec);
+ void (*old_hook)(struct hda_codec *codec,
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+};
+
struct hda_gen_spec {
char stream_name_analog[32]; /* analog PCM stream */
const struct hda_pcm_stream *stream_analog_playback;
@@ -276,6 +286,9 @@ struct hda_gen_spec {
struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+ /* mic mute LED hook; called via cap_sync_hook */
+ struct hda_micmute_hook micmute_led;
+
/* PCM hooks */
void (*pcm_playback_hook)(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
@@ -342,4 +355,7 @@ unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec,
void snd_hda_gen_stream_pm(struct hda_codec *codec, hda_nid_t nid, bool on);
int snd_hda_gen_fix_pin_power(struct hda_codec *codec, hda_nid_t pin);
+int snd_hda_gen_add_micmute_led(struct hda_codec *codec,
+ void (*hook)(struct hda_codec *));
+
#endif /* __SOUND_HDA_GENERIC_H */
--
2.17.1
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