linux-kernel - [PATCH 4/7] spi: atmel: Remove useless private field

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Message-Id: <20191017141846.7523-5-gregory.clement@bootlin.com>
Date:   Thu, 17 Oct 2019 16:18:43 +0200
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        linux-arm-kernel@...ts.infradead.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>
Subject: [PATCH 4/7] spi: atmel: Remove useless private field

Since the conversion to GPIO descriptor, the GPIO used as chip select,
can be directly access from the spi_device struct. So there is no need
to keep the field npcs_pin.

Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
---
 drivers/spi/spi-atmel.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index b511df6a4846..19600de40422 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -284,7 +284,6 @@ struct atmel_spi {
 
 /* Controller-specific per-slave state */
 struct atmel_spi_device {
-	struct gpio_desc	*npcs_pin;
 	u32			csr;
 };
 
@@ -347,8 +346,8 @@ static void cs_activate(struct atmel_spi *as, struct spi_device *spi)
 		}
 
 		mr = spi_readl(as, MR);
-		if (asd->npcs_pin)
-			gpiod_set_value(asd->npcs_pin, 1);
+		if (spi->cs_gpiod)
+			gpiod_set_value(spi->cs_gpiod, 1);
 	} else {
 		u32 cpol = (spi->mode & SPI_CPOL) ? SPI_BIT(CPOL) : 0;
 		int i;
@@ -364,8 +363,8 @@ static void cs_activate(struct atmel_spi *as, struct spi_device *spi)
 
 		mr = spi_readl(as, MR);
 		mr = SPI_BFINS(PCS, ~(1 << spi->chip_select), mr);
-		if (asd->npcs_pin && spi->chip_select != 0)
-			gpiod_set_value(asd->npcs_pin, 1);
+		if (spi->cs_gpiod && spi->chip_select != 0)
+			gpiod_set_value(spi->cs_gpiod, 1);
 		spi_writel(as, MR, mr);
 	}
 
@@ -374,7 +373,6 @@ static void cs_activate(struct atmel_spi *as, struct spi_device *spi)
 
 static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi)
 {
-	struct atmel_spi_device *asd = spi->controller_state;
 	u32 mr;
 
 	/* only deactivate *this* device; sometimes transfers to
@@ -388,10 +386,10 @@ static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi)
 
 	dev_dbg(&spi->dev, "DEactivate NPCS, mr %08x\n", mr);
 
-	if (!asd->npcs_pin)
+	if (!spi->cs_gpiod)
 		spi_writel(as, CR, SPI_BIT(LASTXFER));
 	else if (atmel_spi_is_v2(as) || spi->chip_select != 0)
-		gpiod_set_value(asd->npcs_pin, 0);
+		gpiod_set_value(spi->cs_gpiod, 0);
 }
 
 static void atmel_spi_lock(struct atmel_spi *as) __acquires(&as->lock)
@@ -1205,9 +1203,6 @@ static int atmel_spi_setup(struct spi_device *spi)
 		if (!asd)
 			return -ENOMEM;
 
-		if (spi->cs_gpiod)
-			asd->npcs_pin = spi->cs_gpiod;
-
 		spi->controller_state = asd;
 	}
 
-- 
2.23.0