Commit dda415d4 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add a helper function for simple enum kcontrols 



The same type of code is being used in multiple places in various
codec drivers, so put it as a core library.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 475c3d21

sound/pci/hda/hda_codec.c

+28 −0
Original line number Diff line number Diff line
@@ -4791,6 +4791,34 @@ int snd_hda_input_mux_put(struct hda_codec *codec, 
EXPORT_SYMBOL_HDA(snd_hda_input_mux_put);





/*

 * process kcontrol info callback of a simple string enum array

 * when @num_items is 0 or @texts is NULL, assume a boolean enum array

 */

int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,

			     struct snd_ctl_elem_info *uinfo,

			     int num_items, const char * const *texts)

{

	static const char * const texts_default[] = {

		"Disabled", "Enabled"

	};



	if (!texts || !num_items) {

		num_items = 2;

		texts = texts_default;

	}



	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;

	uinfo->count = 1;

	uinfo->value.enumerated.items = num_items;

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)

		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;

	strcpy(uinfo->value.enumerated.name,

	       texts[uinfo->value.enumerated.item]);

	return 0;

}

EXPORT_SYMBOL_HDA(snd_hda_enum_helper_info);



/*

 * Multi-channel / digital-out PCM helper functions

 */

sound/pci/hda/hda_local.h

+9 −0
Original line number Diff line number Diff line
@@ -600,6 +600,15 @@ int snd_hda_check_amp_list_power(struct hda_codec *codec, 
#define get_amp_offset(kc)	(((kc)->private_value >> 23) & 0x3f)

#define get_amp_min_mute(kc)	(((kc)->private_value >> 29) & 0x1)



/*

 * enum control helper

 */

int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,

			     struct snd_ctl_elem_info *uinfo,

			     int num_entries, const char * const *texts);

#define snd_hda_enum_bool_helper_info(kcontrol, uinfo) \

	snd_hda_enum_helper_info(kcontrol, uinfo, 0, NULL)



/*

 * CEA Short Audio Descriptor data

 */

sound/pci/hda/patch_conexant.c

+3 −18
Original line number Diff line number Diff line
@@ -3435,28 +3435,13 @@ static int cx_automute_mode_info(struct snd_kcontrol *kcontrol, 
{

	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	struct conexant_spec *spec = codec->spec;

	static const char * const texts2[] = {

		"Disabled", "Enabled"

	};

	static const char * const texts3[] = {

		"Disabled", "Speaker Only", "Line Out+Speaker"

	};

	const char * const *texts;



	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;

	uinfo->count = 1;

	if (spec->automute_hp_lo) {

		uinfo->value.enumerated.items = 3;

		texts = texts3;

	} else {

		uinfo->value.enumerated.items = 2;

		texts = texts2;

	}

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)

		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;

	strcpy(uinfo->value.enumerated.name,

	       texts[uinfo->value.enumerated.item]);

	return 0;

	if (spec->automute_hp_lo)

		return snd_hda_enum_helper_info(kcontrol, uinfo, 3, texts3);

	return snd_hda_enum_bool_helper_info(kcontrol, uinfo);

}



static int cx_automute_mode_get(struct snd_kcontrol *kcontrol,

sound/pci/hda/patch_realtek.c

+3 −18
Original line number Diff line number Diff line
@@ -815,28 +815,13 @@ static int alc_automute_mode_info(struct snd_kcontrol *kcontrol, 
{

	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	struct alc_spec *spec = codec->spec;

	static const char * const texts2[] = {

		"Disabled", "Enabled"

	};

	static const char * const texts3[] = {

		"Disabled", "Speaker Only", "Line Out+Speaker"

	};

	const char * const *texts;



	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;

	uinfo->count = 1;

	if (spec->automute_speaker_possible && spec->automute_lo_possible) {

		uinfo->value.enumerated.items = 3;

		texts = texts3;

	} else {

		uinfo->value.enumerated.items = 2;

		texts = texts2;

	}

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)

		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;

	strcpy(uinfo->value.enumerated.name,

	       texts[uinfo->value.enumerated.item]);

	return 0;

	if (spec->automute_speaker_possible && spec->automute_lo_possible)

		return snd_hda_enum_helper_info(kcontrol, uinfo, 3, texts3);

	return snd_hda_enum_bool_helper_info(kcontrol, uinfo);

}



static int alc_automute_mode_get(struct snd_kcontrol *kcontrol,

sound/pci/hda/patch_via.c

+1 −12
Original line number Diff line number Diff line
@@ -739,18 +739,7 @@ static void set_pin_power_state(struct hda_codec *codec, hda_nid_t nid, 
static int via_pin_power_ctl_info(struct snd_kcontrol *kcontrol,

				  struct snd_ctl_elem_info *uinfo)

{

	static const char * const texts[] = {

		"Disabled", "Enabled"

	};



	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;

	uinfo->count = 1;

	uinfo->value.enumerated.items = 2;

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)

		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;

	strcpy(uinfo->value.enumerated.name,

	       texts[uinfo->value.enumerated.item]);

	return 0;

	return snd_hda_enum_bool_helper_info(kcontrol, uinfo);

}



static int via_pin_power_ctl_get(struct snd_kcontrol *kcontrol,

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