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slim-msm-ngd: Check current state of sub system restart notifier

Browse source 
Check for the current state of sub system restart notifier when
the LOCATOR_UP notification is given to slimbus driver and do the
slimbus initialization if the current state is already set to
SERVREG_NOTIF_SERVICE_STATE_UP_V01.

This change is needed in the cases where LOCATOR_UP notification
to slimbus driver got delayed and the state of the sub system restart
notifier is already set to SERVREG_NOTIF_SERVICE_STATE_UP_V01 as
slimbus will be expecting the SERVREG_NOTIF_SERVICE_STATE_UP_V01
notification which is not going to come as the notifier state is
already changed.

Change-Id: I4804bbb13e065ac78be7a442993286532402db9d
Signed-off-by: Prudhvi Yarlagadda <pyarlaga@codeaurora.org>
This commit is contained in:
Prudhvi Yarlagadda 2020-02-08 16:42:09 +05:30 • committed by Gerrit - the friendly Code Review server
commit 80269d295f
1 changed files with 14 additions and 2 deletions
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16
drivers/slimbus/slim-msm-ngd.c
View file

@ -272,7 +272,7 @@ static int dsp_domr_notify_cb(struct notifier_block *n, unsigned long code,
break;
case SUBSYS_AFTER_POWERUP:
case SERVREG_NOTIF_SERVICE_STATE_UP_V01:
SLIM_INFO(dev, "SLIM DSP SSR notify cb:%lu\n", code);
SLIM_INFO(dev, "SLIM DSP SSR notify cb:0x%x\n", code);
/* Hold wake lock until notify slaves thread is done */
pm_stay_awake(dev->dev);
atomic_set(&dev->init_in_progress, 1);
@ -302,9 +302,21 @@ static int dsp_domr_notify_cb(struct notifier_block *n, unsigned long code,
&cur);
SLIM_INFO(dev, "reg-PD client:%s with service:%s\n",
reg->client_name, reg->service_name);
SLIM_INFO(dev, "reg-PD dom:%s instance:%d, cur:%d\n",
SLIM_INFO(dev, "reg-PD dom:%s instance:%d, cur:0x%x\n",
reg->domain_list->name,
reg->domain_list->instance_id, cur);
if (cur == SERVREG_NOTIF_SERVICE_STATE_UP_V01) {
pm_stay_awake(dev->dev);
atomic_set(&dev->init_in_progress, 1);
if (dev->lpass_mem_usage) {
dev->lpass_mem->start = dev->lpass_phy_base;
dev->lpass.base = dev->lpass_virt_base;
}
atomic_set(&dev->ssr_in_progress, 0);
schedule_work(&dev->dsp.dom_up);
}
if (IS_ERR_OR_NULL(dev->dsp.domr))
ngd_reg_ssr(dev);
else