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Subject[PATCH 03/20] ALSA: hda/ca0132 - Add surround channel config control.
Date
Add a surround channel configuration enumeration control. Setting up
different channel configurations allows the DSP to upmix stereo audio
into multi-channel audio, and allows for redirection of bass to a
subwoofer.

Signed-off-by: Connor McAdams <conmanx360@gmail.com>
---
sound/pci/hda/patch_ca0132.c | 110 ++++++++++++++++++++++++++++++++++-
1 file changed, 108 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 2e664aeee1c4..dd580f4b741d 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -38,6 +38,8 @@
#define FLOAT_ONE 0x3f800000
#define FLOAT_TWO 0x40000000
#define FLOAT_THREE 0x40400000
+#define FLOAT_FIVE 0x40a00000
+#define FLOAT_SIX 0x40c00000
#define FLOAT_EIGHT 0x41000000
#define FLOAT_MINUS_5 0xc0a00000

@@ -143,7 +145,8 @@ enum {
MIC_BOOST_ENUM,
AE5_HEADPHONE_GAIN_ENUM,
AE5_SOUND_FILTER_ENUM,
- ZXR_HEADPHONE_GAIN
+ ZXR_HEADPHONE_GAIN,
+ SPEAKER_CHANNEL_CFG_ENUM,
#define EFFECTS_COUNT (EFFECT_END_NID - EFFECT_START_NID)
};

@@ -686,6 +689,39 @@ static const struct ca0132_alt_out_set alt_out_presets[] = {
}
};

+/* Surround output channel count configuration structures. */
+#define SPEAKER_CHANNEL_CFG_COUNT 5
+enum {
+ SPEAKER_CHANNELS_2_0,
+ SPEAKER_CHANNELS_2_1,
+ SPEAKER_CHANNELS_4_0,
+ SPEAKER_CHANNELS_4_1,
+ SPEAKER_CHANNELS_5_1,
+};
+
+struct ca0132_alt_speaker_channel_cfg {
+ char *name;
+ unsigned int val;
+};
+
+static const struct ca0132_alt_speaker_channel_cfg speaker_channel_cfgs[] = {
+ { .name = "2.0",
+ .val = FLOAT_ONE
+ },
+ { .name = "2.1",
+ .val = FLOAT_TWO
+ },
+ { .name = "4.0",
+ .val = FLOAT_FIVE
+ },
+ { .name = "4.1",
+ .val = FLOAT_SIX
+ },
+ { .name = "5.1",
+ .val = FLOAT_EIGHT
+ }
+};
+
/*
* DSP volume setting structs. Req 1 is left volume, req 2 is right volume,
* and I don't know what the third req is, but it's always zero. I assume it's
@@ -1063,6 +1099,7 @@ struct ca0132_spec {
/* ca0132_alt control related values */
unsigned char in_enum_val;
unsigned char out_enum_val;
+ unsigned char channel_cfg_val;
unsigned char mic_boost_enum_val;
unsigned char smart_volume_setting;
long fx_ctl_val[EFFECT_LEVEL_SLIDERS];
@@ -4476,7 +4513,8 @@ static int ca0132_alt_select_out(struct hda_codec *codec)
snd_hda_set_pin_ctl(codec, spec->out_pins[3],
pin_ctl | PIN_OUT);

- dspio_set_uint_param(codec, 0x80, 0x04, FLOAT_EIGHT);
+ tmp = speaker_channel_cfgs[spec->channel_cfg_val].val;
+ dspio_set_uint_param(codec, 0x80, 0x04, tmp);
break;
}
/*
@@ -5582,6 +5620,54 @@ static int ca0132_alt_output_select_put(struct snd_kcontrol *kcontrol,
return 1;
}

+/* Select surround output type: 2.1, 4.0, 4.1, or 5.1. */
+static int ca0132_alt_speaker_channel_cfg_get_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ unsigned int items = SPEAKER_CHANNEL_CFG_COUNT;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = items;
+ if (uinfo->value.enumerated.item >= items)
+ uinfo->value.enumerated.item = items - 1;
+ strcpy(uinfo->value.enumerated.name,
+ speaker_channel_cfgs[uinfo->value.enumerated.item].name);
+ return 0;
+}
+
+static int ca0132_alt_speaker_channel_cfg_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct ca0132_spec *spec = codec->spec;
+
+ ucontrol->value.enumerated.item[0] = spec->channel_cfg_val;
+ return 0;
+}
+
+static int ca0132_alt_speaker_channel_cfg_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct ca0132_spec *spec = codec->spec;
+ int sel = ucontrol->value.enumerated.item[0];
+ unsigned int items = SPEAKER_CHANNEL_CFG_COUNT;
+
+ if (sel >= items)
+ return 0;
+
+ codec_dbg(codec, "ca0132_alt_speaker_channels: sel=%d, channels=%s\n",
+ sel, speaker_channel_cfgs[sel].name);
+
+ spec->channel_cfg_val = sel;
+
+ if (spec->out_enum_val == SURROUND_OUT)
+ ca0132_alt_select_out(codec);
+
+ return 1;
+}
+
/*
* Smart Volume output setting control. Three different settings, Normal,
* which takes the value from the smart volume slider. The two others, loud
@@ -6226,6 +6312,23 @@ static int ca0132_alt_add_output_enum(struct hda_codec *codec)
snd_ctl_new1(&knew, codec));
}

+/*
+ * Add a control for selecting channel count on speaker output. Setting this
+ * allows the DSP to do bass redirection and channel upmixing on surround
+ * configurations.
+ */
+static int ca0132_alt_add_speaker_channel_cfg_enum(struct hda_codec *codec)
+{
+ struct snd_kcontrol_new knew =
+ HDA_CODEC_MUTE_MONO("Output: Channels",
+ SPEAKER_CHANNEL_CFG_ENUM, 1, 0, HDA_OUTPUT);
+ knew.info = ca0132_alt_speaker_channel_cfg_get_info;
+ knew.get = ca0132_alt_speaker_channel_cfg_get;
+ knew.put = ca0132_alt_speaker_channel_cfg_put;
+ return snd_hda_ctl_add(codec, SPEAKER_CHANNEL_CFG_ENUM,
+ snd_ctl_new1(&knew, codec));
+}
+
/*
* Create an Input Source enumerated control for the alternate ca0132 codecs
* because the front microphone has no auto-detect, and Line-in has to be set
@@ -6530,6 +6633,9 @@ static int ca0132_build_controls(struct hda_codec *codec)
*/
if (ca0132_use_alt_functions(spec)) {
err = ca0132_alt_add_output_enum(codec);
+ if (err < 0)
+ return err;
+ err = ca0132_alt_add_speaker_channel_cfg_enum(codec);
if (err < 0)
return err;
err = ca0132_alt_add_mic_boost_enum(codec);
--
2.20.1
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