asoc: update digital_cdc_rsc_mgr_hw_vote API

Update digital_cdc_rsc_mgr_hw_vote_enable/disable API with device
info for easy debug. Also, add swrm clock enable checks during SSR.
When SSR happens, swrm->hw_core_clk_en and swrm->aud_core_clk_en will
be reset without resetting audio_vote and core_vote clk. This would
cause clk mismatch in audio driver and adsp and device fails suspending
when there's no audio usecase. Make this change to reset audio_vote
and core_vote clk when receiving SWR_DEVICE_SSR_DOWN.

Change-Id: I9875aac9f6faf8b6481457a70f31b005073369e0
Signed-off-by: Meng Wang <quic_mengw@quicinc.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/dsp/digital-cdc-rsc-mgr.c b/dsp/digital-cdc-rsc-mgr.c
index be5d5cad..c69fea55 100644
--- a/dsp/digital-cdc-rsc-mgr.c
+++ b/dsp/digital-cdc-rsc-mgr.c
@@ -1,12 +1,14 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/ratelimit.h>
 #include <dsp/digital-cdc-rsc-mgr.h>
+#include <linux/dev_printk.h>
 
 struct mutex hw_vote_lock;
 static bool is_init_done;
@@ -15,10 +17,11 @@ static bool is_init_done;
  * digital_cdc_rsc_mgr_hw_vote_enable - Enables hw vote in DSP
  *
  * @vote_handle: vote handle for which voting needs to be done
+ * @dev: indicate which device votes
  *
  * Returns 0 on success or -EINVAL/error code on failure
  */
-int digital_cdc_rsc_mgr_hw_vote_enable(struct clk* vote_handle)
+int digital_cdc_rsc_mgr_hw_vote_enable(struct clk *vote_handle, struct device *dev)
 {
 	int ret = 0;
 
@@ -32,7 +35,7 @@ int digital_cdc_rsc_mgr_hw_vote_enable(struct clk* vote_handle)
 	ret = clk_prepare_enable(vote_handle);
 	mutex_unlock(&hw_vote_lock);
 
-	pr_debug("%s: return %d\n", __func__, ret);
+	dev_dbg(dev, "%s: return %d\n", __func__, ret);
 	trace_printk("%s: return %d\n", __func__, ret);
 	return ret;
 }
@@ -42,9 +45,10 @@ EXPORT_SYMBOL(digital_cdc_rsc_mgr_hw_vote_enable);
  * digital_cdc_rsc_mgr_hw_vote_disable - Disables hw vote in DSP
  *
  * @vote_handle: vote handle for which voting needs to be disabled
+ * @dev: indicate which device unvotes
  *
  */
-void digital_cdc_rsc_mgr_hw_vote_disable(struct clk* vote_handle)
+void digital_cdc_rsc_mgr_hw_vote_disable(struct clk *vote_handle, struct device *dev)
 {
 	if (!is_init_done || vote_handle == NULL) {
 		pr_err_ratelimited("%s: init failed or vote handle NULL\n",
@@ -55,6 +59,7 @@ void digital_cdc_rsc_mgr_hw_vote_disable(struct clk* vote_handle)
 	mutex_lock(&hw_vote_lock);
 	clk_disable_unprepare(vote_handle);
 	mutex_unlock(&hw_vote_lock);
+	dev_dbg(dev, "%s: leave\n", __func__);
 	trace_printk("%s\n", __func__);
 }
 EXPORT_SYMBOL(digital_cdc_rsc_mgr_hw_vote_disable);