[PATCH spi-next 02/11] spi: spi-fsl-lpspi: fsl_lpspi_probe(): use FIELD_GET to decode Parameter register

[Marc Kleine-Budde]

Instead of open coding mask and shift operations and to o increase
readability use FIELD_GET() to decode the Parameter register.

Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
 drivers/spi/spi-fsl-lpspi.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index 989d0ffddc25..4c550f740d85 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -55,6 +55,9 @@
 #define IMX7ULP_RDR	0x74
 
 /* General control register field define */
+#define PARAM_PCSNUM	GENMASK(23, 16)
+#define PARAM_RXFIFO	GENMASK(15, 8)
+#define PARAM_TXFIFO	GENMASK(7, 0)
 #define CR_RRF		BIT(9)
 #define CR_RTF		BIT(8)
 #define CR_RST		BIT(1)
@@ -978,12 +981,12 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
 	}
 
 	temp = readl(fsl_lpspi->base + IMX7ULP_PARAM);
-	fsl_lpspi->txfifosize = 1 << (temp & 0x0f);
-	fsl_lpspi->rxfifosize = 1 << ((temp >> 8) & 0x0f);
+	fsl_lpspi->txfifosize = 1 << FIELD_GET(PARAM_TXFIFO, temp);
+	fsl_lpspi->rxfifosize = 1 << FIELD_GET(PARAM_RXFIFO, temp);
 	if (of_property_read_u32((&pdev->dev)->of_node, "num-cs",
 				 &num_cs)) {
 		if (devtype_data->query_hw_for_num_cs)
-			num_cs = ((temp >> 16) & 0xf);
+			num_cs = FIELD_GET(PARAM_PCSNUM, temp);
 		else
 			num_cs = 1;
 	}

-- 
2.51.0