linux-kernel - [PATCH] spi: dw-mmio: avoid hardcoded field mask

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Message-Id: <20180831114046.27094-1-alexandre.belloni@bootlin.com>
Date:   Fri, 31 Aug 2018 13:40:46 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Allan Nielsen <allan.nielsen@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH] spi: dw-mmio: avoid hardcoded field mask

Define a mask for the IF_SI_OWNER field.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/spi/spi-dw-mmio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 351f49976161..a768461614a0 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -36,6 +36,7 @@ struct dw_spi_mmio {
 #define MSCC_CPU_SYSTEM_CTRL_GENERAL_CTRL	0x24
 #define OCELOT_IF_SI_OWNER_OFFSET		4
 #define JAGUAR2_IF_SI_OWNER_OFFSET		6
+#define MSCC_IF_SI_OWNER_MASK			GENMASK(1, 0)
 #define MSCC_IF_SI_OWNER_SISL			0
 #define MSCC_IF_SI_OWNER_SIBM			1
 #define MSCC_IF_SI_OWNER_SIMC			2
@@ -102,7 +103,7 @@ static int dw_spi_mscc_init(struct platform_device *pdev,
 
 	/* Select the owner of the SI interface */
 	regmap_update_bits(dwsmscc->syscon, MSCC_CPU_SYSTEM_CTRL_GENERAL_CTRL,
-			   0x3 << if_si_owner_offset,
+			   MSCC_IF_SI_OWNER_MASK << if_si_owner_offset,
 			   MSCC_IF_SI_OWNER_SIMC << if_si_owner_offset);
 
 	dwsmmio->dws.set_cs = dw_spi_mscc_set_cs;
-- 
2.19.0.rc1