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[v2,05/10] spi: spi-sun6i: sun6i_spi_get_tx_fifo_count: Convert manual shift+mask to FIELD_GET()

Message ID 20200706143443.9855-6-mkl@pengutronix.de (mailing list archive)
State Accepted
Commit 9a3ef9df22ec1fe8d49b219c181c039f25c3296d
Headers show
Series spi: spi-sun6i: One fix and some improvements | expand

Commit Message

Marc Kleine-Budde July 6, 2020, 2:34 p.m. UTC 
This patch converts the manual shift+mask in sun6i_spi_get_tx_fifo_count() to
make use of FIELD_GET()

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/spi/spi-sun6i.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
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Patch

diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
index 882492774986..40365761f25d 100644
--- a/drivers/spi/spi-sun6i.c
+++ b/drivers/spi/spi-sun6i.c
@@ -7,6 +7,7 @@ 
  * Maxime Ripard <maxime.ripard@free-electrons.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/device.h>
@@ -60,8 +61,7 @@ 
 #define SUN6I_FIFO_STA_REG		0x1c
 #define SUN6I_FIFO_STA_RF_CNT_MASK		0x7f
 #define SUN6I_FIFO_STA_RF_CNT_BITS		0
-#define SUN6I_FIFO_STA_TF_CNT_MASK		0x7f
-#define SUN6I_FIFO_STA_TF_CNT_BITS		16
+#define SUN6I_FIFO_STA_TF_CNT_MASK		GENMASK(23, 16)
 
 #define SUN6I_CLK_CTL_REG		0x24
 #define SUN6I_CLK_CTL_CDR2_MASK			0xff
@@ -110,9 +110,7 @@  static inline u32 sun6i_spi_get_tx_fifo_count(struct sun6i_spi *sspi)
 {
 	u32 reg = sun6i_spi_read(sspi, SUN6I_FIFO_STA_REG);
 
-	reg >>= SUN6I_FIFO_STA_TF_CNT_BITS;
-
-	return reg & SUN6I_FIFO_STA_TF_CNT_MASK;
+	return FIELD_GET(SUN6I_FIFO_STA_TF_CNT_MASK, reg);
 }
 
 static inline void sun6i_spi_enable_interrupt(struct sun6i_spi *sspi, u32 mask)