ASoC: tegra-virt-alt: lpthread init via amixer

Change exposes lpthread/adsp usage trigger via
amixer. This is needed to make sound card aware
of lpthread state. Without this STR adsp feature
breaks as currently lpthread is written in such
a manner which does not allow adsp to suspend.

Bug 200552183

Change-Id: I2cc1e0fd805a982686bbd034b2c6e094b56df23b
Signed-off-by: Dipesh Gandhi <dipeshg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2198693
(cherry picked from commit e9bd14fd6eb0305cc583092752e6bdccc9c5e76a)
Reviewed-on: https://git-master.nvidia.com/r/2210547
Reviewed-by: Uday Gupta <udayg@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nitin Pai <npai@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/tegra_nvadsp.h b/include/linux/tegra_nvadsp.h
index 9778ec6a0..d06ef4e9c 100644
--- a/include/linux/tegra_nvadsp.h
+++ b/include/linux/tegra_nvadsp.h
@@ -1,7 +1,7 @@
 /*
  * A Header file for managing ADSP/APE
  *
- * Copyright (c) 2014-2018, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2019, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -198,7 +198,8 @@ void nvadsp_os_stop(void);
 int __must_check nvadsp_os_suspend(void);
 void dump_adsp_sys(void);
 void nvadsp_get_os_version(char *, int);
-
+int adsp_usage_set(unsigned int  val);
+unsigned int adsp_usage_get(void);
 /*
  * ADSP TSC
  */