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ASoC: wcd-dsp-mgr: add suspend and resume functionality

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Currently, the suspend and resume routines for the wcd dsp manager
driver are not implemented, which causes race conditions when the
components suspend or resume out of order. Implement the suspend/
resume functionality and route the events to the components in
the expected sequence.

CRs-Fixed: 1111863
Change-Id: Ie84cdef5ed7ffd61610cd83e5f627427f85bc125
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
This commit is contained in:
Bhalchandra Gajare 2017-01-26 16:36:11 -08:00
parent 314869eb56
commit 896e0b12ac
1 changed files with 41 additions and 4 deletions
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45
sound/soc/codecs/wcd-dsp-mgr.c
View file

@ -1,5 +1,4 @@
/*
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
/* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -881,12 +880,50 @@ done:
static int wdsp_suspend(struct device *wdsp_dev)
{
return 0;
struct wdsp_mgr_priv *wdsp;
int rc = 0, i;
if (!wdsp_dev) {
pr_err("%s: Invalid handle to device\n", __func__);
return -EINVAL;
}
wdsp = dev_get_drvdata(wdsp_dev);
for (i = WDSP_CMPNT_TYPE_MAX - 1; i >= 0; i--) {
rc = wdsp_unicast_event(wdsp, i, WDSP_EVENT_SUSPEND, NULL);
if (rc < 0) {
WDSP_ERR(wdsp, "component %s failed to suspend\n",
WDSP_GET_CMPNT_TYPE_STR(i));
break;
}
}
return rc;
}
static int wdsp_resume(struct device *wdsp_dev)
{
return 0;
struct wdsp_mgr_priv *wdsp;
int rc = 0, i;
if (!wdsp_dev) {
pr_err("%s: Invalid handle to device\n", __func__);
return -EINVAL;
}
wdsp = dev_get_drvdata(wdsp_dev);
for (i = 0; i < WDSP_CMPNT_TYPE_MAX; i++) {
rc = wdsp_unicast_event(wdsp, i, WDSP_EVENT_RESUME, NULL);
if (rc < 0) {
WDSP_ERR(wdsp, "component %s failed to resume\n",
WDSP_GET_CMPNT_TYPE_STR(i));
break;
}
}
return rc;
}
static struct wdsp_mgr_ops wdsp_ops = {