diff options
| author | Jonathan Woithe <jwoithe@physics.adelaide.edu.au> | 2008-01-08 12:16:54 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-01-31 17:29:46 +0100 |
| commit | f8225f6d1f68c3d0a0fe844dc40a11cd432a853b (patch) | |
| tree | 99500452a75b84da8e1ec4317a0c4356991c18df /sound | |
| parent | a713b5834731f32757b30de038dcb995afac2ad1 (diff) | |
[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: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/patch_realtek.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 617f3ee304b1..0a64d24e7fda 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -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[] = { |