linux-kernel - [PATCH] iio: adc: max1118: Use new structure for SPI transfer delays

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Date:   Thu, 27 Feb 2020 14:25:15 +0200
From:   Sergiu Cuciurean <sergiu.cuciurean@...log.com>
To:     <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <jic23@...nel.org>
CC:     <pmeerw@...erw.net>, <lars@...afoo.de>, <knaack.h@....de>,
        <tglx@...utronix.de>, <alexios.zavras@...el.com>,
        <allison@...utok.net>, <kstewart@...uxfoundation.org>,
        Sergiu Cuciurean <sergiu.cuciurean@...log.com>
Subject: [PATCH] iio: adc: max1118: 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/iio/adc/max1118.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c
index 3b6f3b9a6c5b..0c5d7aaf6826 100644
--- a/drivers/iio/adc/max1118.c
+++ b/drivers/iio/adc/max1118.c
@@ -71,7 +71,10 @@ static int max1118_read(struct spi_device *spi, int channel)
 		 */
 		{
 			.len = 0,
-			.delay_usecs = 1,	/* > CNVST Low Time 100 ns */
+			.delay = {	/* > CNVST Low Time 100 ns */
+				.value = 1,
+				.unit = SPI_DELAY_UNIT_USECS
+			},
 			.cs_change = 1,
 		},
 		/*
@@ -81,7 +84,10 @@ static int max1118_read(struct spi_device *spi, int channel)
 		 */
 		{
 			.len = 0,
-			.delay_usecs = 8,
+			.delay = {
+				.value = 8,
+				.unit = SPI_DELAY_UNIT_USECS
+			},
 		},
 		{
 			.rx_buf = &adc->data,
-- 
2.17.1