commit f538cefc0747e6bc2cff296ad295f6a37e17f7a5
author Gopikrishnaiah Anandan <agopik@codeaurora.org> Mon Oct 28 14:06:03 2013 -0700
committer Ravi Kumar Alamanda <ralama@codeaurora.org> Sat Nov 09 10:58:54 2013 -0800
tree 2552484ceca9c39469f97496e67cac895b909d8c
parent ac203d58b046be0095bbc5842176fa5d7c26d9b5

hal: Add support for speaker protection

- Speaker protection feature protects the speaker from
  overheating.

Change-Id: Ida4899534124eba203025915beba662e88a0f403

hal/audio_hw.c

diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 74217b7..a90caa4 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -117,6 +117,8 @@
     [USECASE_INCALL_REC_UPLINK_AND_DOWNLINK] = "incall-rec-uplink-and-downlink",
     [USECASE_INCALL_MUSIC_UPLINK] = "incall_music_uplink",
     [USECASE_INCALL_MUSIC_UPLINK2] = "incall_music_uplink2",
+    [USECASE_AUDIO_SPKR_CALIB_RX] = "spkr-rx-calib",
+    [USECASE_AUDIO_SPKR_CALIB_TX] = "spkr-vi-record",
 };
 
 
@@ -166,7 +168,7 @@
     return id;
 }
 
-static int enable_audio_route(struct audio_device *adev,
+int enable_audio_route(struct audio_device *adev,
                               struct audio_usecase *usecase,
                               bool update_mixer)
 {
@@ -220,7 +222,7 @@
     return 0;
 }
 
-static int enable_snd_device(struct audio_device *adev,
+int enable_snd_device(struct audio_device *adev,
                              snd_device_t snd_device,
                              bool update_mixer)
 {
@@ -253,14 +255,21 @@
     if(SND_DEVICE_IN_USB_HEADSET_MIC == snd_device)
        audio_extn_usb_start_capture(adev);
 
-    if (platform_send_audio_calibration(adev->platform, snd_device) < 0) {
-        adev->snd_dev_ref_cnt[snd_device]--;
-        return -EINVAL;
+    if (snd_device == SND_DEVICE_OUT_SPEAKER &&
+        audio_extn_spkr_prot_is_enabled()) {
+       if (audio_extn_spkr_prot_start_processing(snd_device)) {
+          ALOGE("%s: spkr_start_processing failed", __func__);
+          return -EINVAL;
+      }
+    }  else {
+        ALOGV("%s: snd_device(%d: %s)", __func__,
+        snd_device, device_name);
+        if (platform_send_audio_calibration(adev->platform, snd_device) < 0) {
+            adev->snd_dev_ref_cnt[snd_device]--;
+            return -EINVAL;
+        }
+        audio_route_apply_path(adev->audio_route, device_name);
     }
-
-    ALOGV("%s: snd_device(%d: %s)", __func__,
-          snd_device, device_name);
-    audio_route_apply_path(adev->audio_route, device_name);
     if (update_mixer)
         audio_route_update_mixer(adev->audio_route);
 
@@ -302,7 +311,11 @@
         if(SND_DEVICE_IN_USB_HEADSET_MIC == snd_device)
             audio_extn_usb_stop_capture(adev);
 
-        audio_route_reset_path(adev->audio_route, device_name);
+        if (snd_device == SND_DEVICE_OUT_SPEAKER &&
+            audio_extn_spkr_prot_is_enabled()) {
+            audio_extn_spkr_prot_stop_processing();
+        } else
+            audio_route_reset_path(adev->audio_route, device_name);
 
         if (update_mixer)
             audio_route_update_mixer(adev->audio_route);