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Commit f8225f6d authored by Jonathan Woithe's avatar Jonathan Woithe Committed by Jaroslav Kysela
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[ALSA] hda-codec - Add EAPD controls for ALC260 test model 



This implements a switch control for the EAPD signal output by the ALC26x
chips.  Since some laptops may utilise this to activate useful things it
is handy to have a control for this in the ALC26x test models.  The patch
includes the control in the ALC260 test model.

Signed-off-by: default avatarJonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent a713b583

sound/pci/hda/patch_realtek.c

+59 −0
Original line number Diff line number Diff line
@@ -608,6 +608,59 @@ static int alc_spdif_ctrl_put(struct snd_kcontrol *kcontrol, 
	  .private_value = nid | (mask<<16) }

#endif   /* CONFIG_SND_DEBUG */



/* A switch control to allow the enabling EAPD digital outputs on the ALC26x.

 * Again, this is only used in the ALC26x test models to help identify when

 * the EAPD line must be asserted for features to work.

 */

#ifdef CONFIG_SND_DEBUG

#define alc_eapd_ctrl_info	snd_ctl_boolean_mono_info



static int alc_eapd_ctrl_get(struct snd_kcontrol *kcontrol,

			      struct snd_ctl_elem_value *ucontrol)

{

	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	hda_nid_t nid = kcontrol->private_value & 0xffff;

	unsigned char mask = (kcontrol->private_value >> 16) & 0xff;

	long *valp = ucontrol->value.integer.value;

	unsigned int val = snd_hda_codec_read(codec, nid, 0,

					      AC_VERB_GET_EAPD_BTLENABLE, 0x00);



	*valp = (val & mask) != 0;

	return 0;

}



static int alc_eapd_ctrl_put(struct snd_kcontrol *kcontrol,

			      struct snd_ctl_elem_value *ucontrol)

{

	int change;

	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	hda_nid_t nid = kcontrol->private_value & 0xffff;

	unsigned char mask = (kcontrol->private_value >> 16) & 0xff;

	long val = *ucontrol->value.integer.value;

	unsigned int ctrl_data = snd_hda_codec_read(codec, nid, 0,

						    AC_VERB_GET_EAPD_BTLENABLE,

						    0x00);



	/* Set/unset the masked control bit(s) as needed */

	change = (!val ? 0 : mask) != (ctrl_data & mask);

	if (!val)

		ctrl_data &= ~mask;

	else

		ctrl_data |= mask;

	snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_EAPD_BTLENABLE,

				  ctrl_data);



	return change;

}



#define ALC_EAPD_CTRL_SWITCH(xname, nid, mask) \

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0,  \

	  .info = alc_eapd_ctrl_info, \

	  .get = alc_eapd_ctrl_get, \

	  .put = alc_eapd_ctrl_put, \

	  .private_value = nid | (mask<<16) }

#endif   /* CONFIG_SND_DEBUG */



/*

 * set up from the preset table

 */
@@ -4332,6 +4385,12 @@ static struct snd_kcontrol_new alc260_test_mixer[] = { 
	ALC_SPDIF_CTRL_SWITCH("SPDIF Playback Switch", 0x03, 0x01),

	ALC_SPDIF_CTRL_SWITCH("SPDIF Capture Switch", 0x06, 0x01),



	/* A switch allowing EAPD to be enabled.  Some laptops seem to use

	 * this output to turn on an external amplifier.

	 */

	ALC_EAPD_CTRL_SWITCH("LINE-OUT EAPD Enable Switch", 0x0f, 0x02),

	ALC_EAPD_CTRL_SWITCH("HP-OUT EAPD Enable Switch", 0x10, 0x02),



	{ } /* end */

};

static struct hda_verb alc260_test_init_verbs[] = {