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Commit 8b822522 authored by Chris Lew's avatar Chris Lew Committed by Ashwini Muduganti
Browse files

rpmsg: glink: spi: Reduce tx sleep 



The glink spi use case have strict latency requirements. Reduce the tx
wait time to improve latency during high throughput usecases.

Change-Id: Ief636ecd0def50ab59df1f190a7dd735e89c8344
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent 1f10ccdd

drivers/rpmsg/qcom_glink_spi.c

+4 −3
Original line number Diff line number Diff line
@@ -65,6 +65,7 @@ do { \ 


#define MAX_INACTIVE_CYCLES 50

#define POLL_INTERVAL_US 500

#define TX_WAIT_US 500



#define ACTIVE_TX BIT(0)

#define ACTIVE_RX BIT(1)
@@ -646,7 +647,7 @@ static int glink_spi_tx(struct glink_spi *glink, void *hdr, size_t hlen, 
		/* Wait without holding the tx_lock */

		mutex_unlock(&glink->tx_lock);



		usleep_range(10000, 15000);

		usleep_range(TX_WAIT_US, TX_WAIT_US + 50);



		mutex_lock(&glink->tx_lock);

	}
@@ -1140,7 +1141,7 @@ static int glink_spi_send_short(struct glink_spi_channel *channel, 
		/* Wait without holding the tx_lock */

		mutex_unlock(&glink->tx_lock);



		usleep_range(10000, 15000);

		usleep_range(TX_WAIT_US, TX_WAIT_US + 50);



		mutex_lock(&glink->tx_lock);

	}
@@ -1189,7 +1190,7 @@ static int glink_spi_send_data(struct glink_spi_channel *channel, 
		/* Wait without holding the tx_lock */

		mutex_unlock(&glink->tx_lock);



		usleep_range(10000, 15000);

		usleep_range(TX_WAIT_US, TX_WAIT_US + 50);



		mutex_lock(&glink->tx_lock);

	}