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can: at91_can: MCR Register: convert to FIELD_PREP()

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

Link: https://lore.kernel.org/all/20231005-at91_can-rx_offload-v2-9-9987d53600e0@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2023-04-18 16:35:54 +02:00
parent bdfff1433c
commit 5e9c5bcc01
1 changed files with 8 additions and 2 deletions
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10
drivers/net/can/at91_can.c
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@ -90,7 +90,9 @@ enum at91_reg {
#define AT91_MSR_MRDY BIT(23)
#define AT91_MSR_MMI BIT(24)
#define AT91_MCR_MDLC_MASK GENMASK(19, 16)
#define AT91_MCR_MRTR BIT(20)
#define AT91_MCR_MACR BIT(22)
#define AT91_MCR_MTCR BIT(23)
/* Mailbox Modes */
@ -490,8 +492,12 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_BUSY;
}
reg_mid = at91_can_id_to_reg_mid(cf->can_id);
reg_mcr = ((cf->can_id & CAN_RTR_FLAG) ? AT91_MCR_MRTR : 0) |
(cf->len << 16) | AT91_MCR_MTCR;
reg_mcr = FIELD_PREP(AT91_MCR_MDLC_MASK, cf->len) |
AT91_MCR_MTCR;
if (cf->can_id & CAN_RTR_FLAG)
reg_mcr |= AT91_MCR_MRTR;
/* disable MB while writing ID (see datasheet) */
set_mb_mode(priv, mb, AT91_MB_MODE_DISABLED);