diff options
| author |   Joakim Zhang <qiangqing.zhang@nxp.com> | 2019-07-12 08:02:47 +0000 |
|---|---|---|
| committer |   Marc Kleine-Budde <mkl@pengutronix.de> | 2020-09-22 16:55:34 +0200 |
| commit | 0542920c3f0a666457a43625f4fa31cf6f059b94 (patch) | |
| tree | cb602bc810525ec925dd2fe51afc3200016e1b62 /drivers/net/can/flexcan.c | |
| parent | can: flexcan: add ISO CAN FD feature support (diff) | |
| download | linux-dev-0542920c3f0a666457a43625f4fa31cf6f059b94.tar.xz linux-dev-0542920c3f0a666457a43625f4fa31cf6f059b94.zip | |
can: flexcan: add CAN FD BRS support
This patch adds CAN FD BitRate Switch (BRS) support to driver.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20190712075926.7357-5-qiangqing.zhang@nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/flexcan.c')
| -rw-r--r-- | drivers/net/can/flexcan.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index e3ecce80eadb..fc0e9d5fd02b 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -723,9 +723,13 @@ static netdev_tx_t flexcan_start_xmit(struct sk_buff *skb, struct net_device *de if (cfd->can_id & CAN_RTR_FLAG) ctrl |= FLEXCAN_MB_CNT_RTR; - if (can_is_canfd_skb(skb)) + if (can_is_canfd_skb(skb)) { ctrl |= FLEXCAN_MB_CNT_EDL; + if (cfd->flags & CANFD_BRS) + ctrl |= FLEXCAN_MB_CNT_BRS; + } + for (i = 0; i < cfd->len; i += sizeof(u32)) { data = be32_to_cpup((__be32 *)&cfd->data[i]); priv->write(data, &priv->tx_mb->data[i / sizeof(u32)]); @@ -956,6 +960,9 @@ static struct sk_buff *flexcan_mailbox_read(struct can_rx_offload *offload, if (reg_ctrl & FLEXCAN_MB_CNT_EDL) { cfd->len = can_dlc2len(get_canfd_dlc((reg_ctrl >> 16) & 0xf)); + + if (reg_ctrl & FLEXCAN_MB_CNT_BRS) + cfd->flags |= CANFD_BRS; } else { cfd->len = get_can_dlc((reg_ctrl >> 16) & 0xf); |