Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4c65e889 authored by Karthikeyan Ramasubramanian's avatar Karthikeyan Ramasubramanian
Browse files

soc: qcom: glink_spi_xprt: Add support for WDSP SSR 



Handle WDSP_EVENT_PRE_SHUTDOWN event to indicate link down event to G-Link
core and the clients of G-Link. Handle WDSP_EVENT_POST_BOOTUP event to
indicate link up event.

CRs-Fixed: 1080354
Change-Id: I12c04ceb7af51cc5d2f0c79b524ef783dc5f749e
Signed-off-by: default avatarKarthikeyan Ramasubramanian <kramasub@codeaurora.org>
parent 1ff56658

drivers/soc/qcom/glink_spi_xprt.c

+12 −7
Original line number Diff line number Diff line
@@ -875,21 +875,20 @@ static void __rx_worker(struct edge_info *einfo) 
	int rcu_id;



	rcu_id = srcu_read_lock(&einfo->use_ref);

	if (einfo->in_ssr) {

		srcu_read_unlock(&einfo->use_ref, rcu_id);

		return;

	}



	if (unlikely(!einfo->rx_fifo_start)) {

		rx_avail = glink_spi_xprt_read_avail(einfo);

		if (!rx_avail) {

			srcu_read_unlock(&einfo->use_ref, rcu_id);

			return;

		}

		einfo->in_ssr = false;

		einfo->xprt_if.glink_core_if_ptr->link_up(&einfo->xprt_if);

	}



	if (einfo->in_ssr) {

		srcu_read_unlock(&einfo->use_ref, rcu_id);

		return;

	}



	glink_spi_xprt_set_poll_mode(einfo);

	while (inactive_cycles < MAX_INACTIVE_CYCLES) {

		if (einfo->tx_resume_needed &&
@@ -1818,9 +1817,16 @@ static int glink_wdsp_cmpnt_event_handler(struct device *dev, 
		spi_dev = to_spi_device(sdev);

		einfo->spi_dev = spi_dev;

		break;

	case WDSP_EVENT_POST_BOOTUP:

		einfo->in_ssr = false;

		synchronize_srcu(&einfo->use_ref);

		/* No break here to trigger fake rx_worker */

	case WDSP_EVENT_IPC1_INTR:

		queue_kthread_work(&einfo->kworker, &einfo->kwork);

		break;

	case WDSP_EVENT_PRE_SHUTDOWN:

		ssr(&einfo->xprt_if);

		break;

	default:

		pr_debug("%s: unhandled event %d", __func__, event);

		break;
@@ -2040,7 +2046,6 @@ static int glink_spi_probe(struct platform_device *pdev) 
	init_xprt_cfg(einfo, subsys_name);

	init_xprt_if(einfo);



	einfo->in_ssr = true;

	einfo->fifo_size = DEFAULT_FIFO_SIZE;

	init_kthread_work(&einfo->kwork, rx_worker);

	init_kthread_worker(&einfo->kworker);