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Subject[PATCH 5.4 98/98] ASoC: Intel: Skylake: Automatic DMIC format configuration according to information from NHLT
Date
From: Mateusz Gorski <mateusz.gorski@linux.intel.com>

commit 2d744ecf2b98405723a2138a547e5c75009bc4e5 upstream.

Automatically choose DMIC pipeline format configuration depending on
information included in NHLT.
Change the access rights of appropriate kcontrols to read-only in order
to prevent user interference.

Signed-off-by: Mateusz Gorski <mateusz.gorski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200427132727.24942-4-mateusz.gorski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org> # 5.4.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/uapi/sound/skl-tplg-interface.h | 1
sound/soc/intel/skylake/skl-topology.c | 64 ++++++++++++++++++++++++++++++--
2 files changed, 62 insertions(+), 3 deletions(-)

--- a/include/uapi/sound/skl-tplg-interface.h
+++ b/include/uapi/sound/skl-tplg-interface.h
@@ -19,6 +19,7 @@
#define SKL_CONTROL_TYPE_BYTE_TLV 0x100
#define SKL_CONTROL_TYPE_MIC_SELECT 0x102
#define SKL_CONTROL_TYPE_MULTI_IO_SELECT 0x103
+#define SKL_CONTROL_TYPE_MULTI_IO_SELECT_DMIC 0x104

#define HDA_SST_CFG_MAX 900 /* size of copier cfg*/
#define MAX_IN_QUEUE 8
--- a/sound/soc/intel/skylake/skl-topology.c
+++ b/sound/soc/intel/skylake/skl-topology.c
@@ -1405,6 +1405,18 @@ static int skl_tplg_multi_config_set(str
return skl_tplg_multi_config_set_get(kcontrol, ucontrol, true);
}

+static int skl_tplg_multi_config_get_dmic(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ return skl_tplg_multi_config_set_get(kcontrol, ucontrol, false);
+}
+
+static int skl_tplg_multi_config_set_dmic(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ return skl_tplg_multi_config_set_get(kcontrol, ucontrol, true);
+}
+
static int skl_tplg_tlv_control_get(struct snd_kcontrol *kcontrol,
unsigned int __user *data, unsigned int size)
{
@@ -1949,6 +1961,11 @@ static const struct snd_soc_tplg_kcontro
.get = skl_tplg_multi_config_get,
.put = skl_tplg_multi_config_set,
},
+ {
+ .id = SKL_CONTROL_TYPE_MULTI_IO_SELECT_DMIC,
+ .get = skl_tplg_multi_config_get_dmic,
+ .put = skl_tplg_multi_config_set_dmic,
+ }
};

static int skl_tplg_fill_pipe_cfg(struct device *dev,
@@ -3109,12 +3126,21 @@ static int skl_tplg_control_load(struct
case SND_SOC_TPLG_CTL_ENUM:
tplg_ec = container_of(hdr,
struct snd_soc_tplg_enum_control, hdr);
- if (kctl->access & SNDRV_CTL_ELEM_ACCESS_READWRITE) {
+ if (kctl->access & SNDRV_CTL_ELEM_ACCESS_READ) {
se = (struct soc_enum *)kctl->private_value;
if (tplg_ec->priv.size)
- return skl_init_enum_data(bus->dev, se,
- tplg_ec);
+ skl_init_enum_data(bus->dev, se, tplg_ec);
}
+
+ /*
+ * now that the control initializations are done, remove
+ * write permission for the DMIC configuration enums to
+ * avoid conflicts between NHLT settings and user interaction
+ */
+
+ if (hdr->ops.get == SKL_CONTROL_TYPE_MULTI_IO_SELECT_DMIC)
+ kctl->access = SNDRV_CTL_ELEM_ACCESS_READ;
+
break;

default:
@@ -3584,6 +3610,37 @@ static int skl_manifest_load(struct snd_
return 0;
}

+static void skl_tplg_complete(struct snd_soc_component *component)
+{
+ struct snd_soc_dobj *dobj;
+ struct snd_soc_acpi_mach *mach =
+ dev_get_platdata(component->card->dev);
+ int i;
+
+ list_for_each_entry(dobj, &component->dobj_list, list) {
+ struct snd_kcontrol *kcontrol = dobj->control.kcontrol;
+ struct soc_enum *se =
+ (struct soc_enum *)kcontrol->private_value;
+ char **texts = dobj->control.dtexts;
+ char chan_text[4];
+
+ if (dobj->type != SND_SOC_DOBJ_ENUM ||
+ dobj->control.kcontrol->put !=
+ skl_tplg_multi_config_set_dmic)
+ continue;
+ sprintf(chan_text, "c%d", mach->mach_params.dmic_num);
+
+ for (i = 0; i < se->items; i++) {
+ struct snd_ctl_elem_value val;
+
+ if (strstr(texts[i], chan_text)) {
+ val.value.enumerated.item[0] = i;
+ kcontrol->put(kcontrol, &val);
+ }
+ }
+ }
+}
+
static struct snd_soc_tplg_ops skl_tplg_ops = {
.widget_load = skl_tplg_widget_load,
.control_load = skl_tplg_control_load,
@@ -3593,6 +3650,7 @@ static struct snd_soc_tplg_ops skl_tplg_
.io_ops_count = ARRAY_SIZE(skl_tplg_kcontrol_ops),
.manifest = skl_manifest_load,
.dai_load = skl_dai_load,
+ .complete = skl_tplg_complete,
};

/*

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