can: at91_can: MMR registers: convert to FIELD_PREP()

Use FIELD_PREP() to access the individual fields of the MMR register.

Link: https://lore.kernel.org/all/20231005-at91_can-rx_offload-v2-6-9987d53600e0@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index 7597da543348f798940a5a2a375b70618568c6ef..16a62f649418b1a5b86fc9ab5e8975cab7c9521a 100644 (file)
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -75,7 +75,9 @@ enum at91_reg {
 #define AT91_ECR_REC_MASK GENMASK(8, 0)
 #define AT91_ECR_TEC_MASK GENMASK(23, 16)
 
-#define AT91_MMR_PRIO_SHIFT (16)
+#define AT91_MMR_MTIMEMARK_MASK GENMASK(15, 0)
+#define AT91_MMR_PRIOR_MASK GENMASK(19, 16)
+#define AT91_MMR_MOT_MASK GENMASK(26, 24)
 
 #define AT91_MID_MIDE BIT(29)
 
@@ -299,9 +301,12 @@ static inline void at91_write(const struct at91_priv *priv, enum at91_reg reg,
 
 static inline void set_mb_mode_prio(const struct at91_priv *priv,
                                    unsigned int mb, enum at91_mb_mode mode,
-                                   int prio)
+                                   u8 prio)
 {
-       at91_write(priv, AT91_MMR(mb), (mode << 24) | (prio << 16));
+       const u32 reg_mmr = FIELD_PREP(AT91_MMR_MOT_MASK, mode) |
+               FIELD_PREP(AT91_MMR_PRIOR_MASK, prio);
+
+       at91_write(priv, AT91_MMR(mb), reg_mmr);
 }
 
 static inline void set_mb_mode(const struct at91_priv *priv, unsigned int mb,