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Commit bac5b267 authored by Prudhvi Yarlagadda's avatar Prudhvi Yarlagadda Committed by Gerrit - the friendly Code Review server
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slim-msm-ngd: Check current state of sub system restart notifier 



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: default avatarPrudhvi Yarlagadda <pyarlaga@codeaurora.org>
parent e78334a9

drivers/slimbus/slim-msm-ngd.c

+14 −2
Original line number Diff line number Diff line
@@ -273,7 +273,7 @@ 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);
@@ -303,9 +303,21 @@ 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