ASoC: Expose APIs to get and set Instance ID support

Expose APIs to get and set instance ID support by exposing a
mixer control for userspace to set the support status as well
as APIs for kernel components to querry for instance ID support.

CRs-Fixed: 2151551
Change-Id: I3b462a4c0f31152a2865af8f4e9664a6c4d324c3
Signed-off-by: Vignesh Kulothungan <[email protected]>

asoc/msm-pcm-routing-v2.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -37,6 +37,7 @@
 #include <dsp/q6afe-v2.h>
 #include <dsp/q6lsm.h>
 #include <dsp/q6core.h>
+#include <dsp/q6common.h>
 #include <dsp/audio_cal_utils.h>
 
 #include "msm-pcm-routing-v2.h"
@@ -16829,6 +16830,46 @@ static const struct snd_kcontrol_new stereo_channel_reverse_control[] = {
 	msm_routing_stereo_channel_reverse_control_put),
 };
 
+static int msm_routing_instance_id_support_info(struct snd_kcontrol *kcontrol,
+						struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int msm_routing_instance_id_support_put(
+	struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	bool supported = ucontrol->value.integer.value[0] ? true : false;
+
+	q6common_update_instance_id_support(supported);
+	return 0;
+}
+
+static int msm_routing_instance_id_support_get(
+	struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	bool supported = false;
+
+	supported = q6common_is_instance_id_supported();
+	ucontrol->value.integer.value[0] = supported ? 1 : 0;
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new
+	msm_routing_feature_support_mixer_controls[] = {
+		{
+			.access = SNDRV_CTL_ELEM_ACCESS_READ |
+				SNDRV_CTL_ELEM_ACCESS_WRITE,
+			.info = msm_routing_instance_id_support_info,
+			.name = "Instance ID Support",
+			.put = msm_routing_instance_id_support_put,
+			.get = msm_routing_instance_id_support_get,
+		},
+};
+
 static const struct snd_pcm_ops msm_routing_pcm_ops = {
 	.hw_params	= msm_pcm_routing_hw_params,
 	.close          = msm_pcm_routing_close,
@@ -16900,6 +16941,10 @@ static int msm_routing_probe(struct snd_soc_platform *platform)
 					ARRAY_SIZE(aptx_dec_license_controls));
 	snd_soc_add_platform_controls(platform, stereo_channel_reverse_control,
 				ARRAY_SIZE(stereo_channel_reverse_control));
+	snd_soc_add_platform_controls(
+			platform, msm_routing_feature_support_mixer_controls,
+			ARRAY_SIZE(msm_routing_feature_support_mixer_controls));
+
 	return 0;
 }
 

dsp/Kbuild

@@ -73,6 +73,7 @@ ifdef CONFIG_SND_SOC_MSM_QDSP6V2_INTF
 	Q6_OBJS += q6audio-v2.o
 	Q6_OBJS += q6voice.o
 	Q6_OBJS += q6core.o
+	Q6_OBJS += q6common.o
 	Q6_OBJS += rtac.o
 	Q6_OBJS += q6lsm.o
 	Q6_OBJS += audio_slimslave.o

dsp/q6common.c

@@ -0,0 +1,43 @@
+/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <dsp/q6common.h>
+
+struct q6common_ctl {
+	bool instance_id_supported;
+};
+
+static struct q6common_ctl common;
+
+/**
+ * q6common_update_instance_id_support
+ *
+ * Update instance ID support flag to true/false
+ *
+ * @supported: enable/disable for instance ID support
+ */
+void q6common_update_instance_id_support(bool supported)
+{
+	common.instance_id_supported = supported;
+}
+EXPORT_SYMBOL(q6common_update_instance_id_support);
+
+/**
+ * q6common_is_instance_id_supported
+ *
+ * Returns true/false for instance ID support
+ */
+bool q6common_is_instance_id_supported(void)
+{
+	return common.instance_id_supported;
+}
+EXPORT_SYMBOL(q6common_is_instance_id_supported);

include/dsp/q6common.h

@@ -0,0 +1,21 @@
+/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __Q6COMMON_H__
+#define __Q6COMMON_H__
+
+#include <ipc/apr.h>
+
+void q6common_update_instance_id_support(bool supported);
+bool q6common_is_instance_id_supported(void);
+
+#endif /* __Q6COMMON_H__ */