spi: dw-mmio: avoid hardcoded field mask

Define a mask for the IF_SI_OWNER field.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 351f499..a768461 100644 (file)
--- 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;