drivers: nvadsp: support for adma regdump callback

With adma driver as module, following compilation error is seen
"undefined reference to tegra_adma_dump_ch_reg".

In the current patch, adsp code exports a function to set regdump
function call back. This function is used by adsp audio driver to
set the function pointer to tegra_adma_dump_ch_reg. This is done
in tegra210_adsp_init().

Bug 200289390

Reviewed-on: http://git-master/r/1483001
Change-Id: I1ef259cf3b988a41720fb6706d39d9bd6f86aac3
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
(cherry picked from commit 36ccba1262928a6ce8b0f4fff1d4ad2591c4305d)
Reviewed-on: https://git-master.nvidia.com/r/1528158
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1537339
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/tegra_nvadsp.h b/include/linux/tegra_nvadsp.h
index 6bace0eda..b5cc25dbf 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) 2014-2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2017, 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,
@@ -357,6 +357,16 @@ static inline long wait_for_nvadsp_app_complete_timeout(nvadsp_app_info_t *info,
         return ret;
 }
 
+/*
+ * set adma reg dump callback function pointer
+ * @cb_adma_regdump: function pointer for callback
+ *
+ * This api is exported and can be accessed by adsp audio driver,
+ * which during adsp init, calls this api to set the callback
+ * function pointer
+ */
+void nvadsp_set_adma_dump_reg(void (*cb_adma_regdump)(void));
+
 #ifdef CONFIG_TEGRA_ADSP_DFS
 /*
  * Override adsp freq and reinit actmon counters