Initial working version as independent repo

1 files changed, 122 insertions, 0 deletions

diff --git a/HDA-intel/IntelHdaHAL.c b/HDA-intel/IntelHdaHAL.c
new file mode 100644
index 0000000..076d067
--- /dev/null
+++ b/HDA-intel/IntelHdaHAL.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author Fulup Ar Foll <fulup@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *
+ * To find out which control your sound card uses
+ *  aplay -l  # Check sndcard name name in between []
+ *  amixer -D hw:xx controls # get supported controls
+ *  amixer -D "hw:3" cget numid=xx  # get control settings
+ *
+ */
+#define _GNU_SOURCE
+#include "hal-interface.h"
+
+
+// Define few private tag for not standard functions
+#define PCM_Volume_Multimedia 1000
+#define PCM_Volume_Navigation 1001
+#define PCM_Volume_Emergency      1002
+
+// Default Values for MasterVolume Ramping
+STATIC halVolRampT volRampMaster= {
+    .mode    = RAMP_VOL_NORMAL,
+    .slave   = Master_Playback_Volume,
+    .delay   = 100*1000, // ramping delay in us
+    .stepDown=1,
+    .stepUp  =1,
+};
+
+STATIC halVolRampT volRampMultimedia= {
+    .slave   = PCM_Volume_Multimedia,
+    .delay   = 100*1000, // ramping delay in us
+    .stepDown= 2,
+    .stepUp  = 1,
+};
+
+STATIC halVolRampT volRampNavigation= {
+    .slave   = PCM_Volume_Navigation,
+    .delay   = 100*1000, // ramping delay in us
+    .stepDown= 4,
+    .stepUp  = 2,
+};
+// Default Values for MasterVolume Ramping
+STATIC halVolRampT volRampEmergency= {
+    .slave   = PCM_Volume_Emergency,
+    .delay   = 50*1000, // ramping delay in us
+    .stepDown= 6,
+    .stepUp  = 3,
+};
+
+// Map HAL hight sndctl with Alsa numid and optionally with a custom callback for non Alsa supported functionalities.
+STATIC alsaHalMapT  alsaHalMap[]= {
+  { .tag=Master_Playback_Volume, .  ctl={.name="PCM Playback Volume", .value=50 } },
+  { .tag=PCM_Playback_Volume     , .ctl={.name="PCM Playback Volume", .value=50 } },
+  { .tag=PCM_Playback_Switch     , .ctl={.name="PCM Playback Switch", .value=01 } },
+  { .tag=Capture_Volume          , .ctl={.name="Mic Capture Volume"  } },
+
+  // Sound card does not have hardware volume ramping
+  { .tag=Master_Playback_Ramp   , .cb={.callback=volumeRamp, .handle=&volRampMaster}, .info="ramp volume linearly according to current ramp setting",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .name="Rampup Master"}
+  },
+
+  // Implement Rampup Volume for Virtual Channels
+  { .tag=Navigation_Playback_Volume, .cb={.callback=volumeRamp, .handle=&volRampNavigation}, .info="RampUp Navigation Volume",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Playback Navigation Ramp", .value=80 }
+  },
+  { .tag=Emergency_Playback_Volume, .cb={.callback=volumeRamp, .handle=&volRampEmergency}, .info="Rampup Emergency Volume",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Playback Emergency Ramp", .value=80 }
+  },
+
+  // Sound Card does not support hardware channel volume mixer (note softvol default range 0-256)
+  { .tag=Multimedia_Playback_Volume, .cb={.callback=volumeRamp, .handle=&volRampMultimedia}, .info="Ramp-up Multimedia Volume",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="Playback Multimedia Ramp", .value=80 }
+  },
+  { .tag=PCM_Volume_Multimedia, .info="Playback Multimedia Softvol",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .maxval=255, .value=200, .name="Playback Multimedia"}
+  },
+  { .tag=PCM_Volume_Navigation, .info="Playback Navigation Softvol",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .maxval=255,.value=200, .name="Playback Navigation"}
+  },
+  { .tag=PCM_Volume_Emergency, .info="Playback Emergency Softvol",
+    .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .maxval=255, .value=200, .name="Playback Emergency"}
+  },
+
+
+  { .tag=EndHalCrlTag}  /* marker for end of the array */
+} ;
+
+// HAL sound card mapping info
+STATIC alsaHalSndCardT alsaHalSndCard = {
+    .name = "HDA Intel PCH", //  WARNING: name MUST match with 'aplay -l'
+    .info = "Hardware Abstraction Layer for IntelHDA sound card",
+    .ctls = alsaHalMap,
+};
+
+STATIC int sndServiceInit() {
+    int err;
+    AFB_DEBUG("IntelHal Binding Init");
+
+    err = halServiceInit(afbBindingV2.api, &alsaHalSndCard);
+    return err;
+}
+
+// API prefix should be unique for each snd card
+PUBLIC const struct afb_binding_v2 afbBindingV2 = {
+    .api = "intel-hda",
+    .init = sndServiceInit,
+    .verbs = halServiceApi,
+    .onevent = halServiceEvent,
+};