linux-kernel - [PATCH] platform: chrome: cros_ec_spi: Use new structure for SPI transfer delays

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Date:   Thu, 27 Feb 2020 16:09:17 +0200
From:   Sergiu Cuciurean <sergiu.cuciurean@...log.com>
To:     <linux-kernel@...r.kernel.org>, <groeck@...omium.org>,
        <enric.balletbo@...labora.com>, <bleung@...omium.org>
CC:     Sergiu Cuciurean <sergiu.cuciurean@...log.com>
Subject: [PATCH] platform: chrome: cros_ec_spi: Use new structure for SPI transfer delays

In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.

The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).

[1] commit bebcfd272df6 ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")

Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@...log.com>
---
 drivers/platform/chrome/cros_ec_spi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
index 46786d2d679a..665ab154bb4f 100644
--- a/drivers/platform/chrome/cros_ec_spi.c
+++ b/drivers/platform/chrome/cros_ec_spi.c
@@ -127,7 +127,8 @@ static int terminate_request(struct cros_ec_device *ec_dev)
 	 */
 	spi_message_init(&msg);
 	memset(&trans, 0, sizeof(trans));
-	trans.delay_usecs = ec_spi->end_of_msg_delay;
+	trans.delay.value = ec_spi->end_of_msg_delay;
+	trans.delay.unit = SPI_DELAY_UNIT_NSECS;
 	spi_message_add_tail(&trans, &msg);
 
 	ret = spi_sync_locked(ec_spi->spi, &msg);
@@ -416,7 +417,8 @@ static int do_cros_ec_pkt_xfer_spi(struct cros_ec_device *ec_dev,
 	spi_message_init(&msg);
 	if (ec_spi->start_of_msg_delay) {
 		memset(&trans_delay, 0, sizeof(trans_delay));
-		trans_delay.delay_usecs = ec_spi->start_of_msg_delay;
+		trans_delay.delay.value = ec_spi->start_of_msg_delay;
+		trans_delay.delay.unit = SPI_DELAY_UNIT_USECS;
 		spi_message_add_tail(&trans_delay, &msg);
 	}
 
-- 
2.17.1