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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: hsnWoAIo+LlYTq0z5uY6rcng3bmD5+gr5DcpLfjEC0Yc7apydV5QNhNJAbqBNiIfAoiidWJUT72mOrr21b9C2B/ZfsqbLMP5HnPJmDiSaD8ZWNe4cKQ42JGw9gHtHh4QyYceu1aMGPXJiozBl+DJmFP1sQ+rpksFgVNe2ggS0klrc3FKH31RV6IEnQm13Gs+2jL7tk3Om35DQ8Aj5PWGsBd1l1rlN/b++7XEFV5zhQ6VKvR+w1pLk6P8EiUoQFS2empX71B5ceRoDd0KKvJ1ISDyxV/p4neDP18aPj+J4eCJqQwW5o30zsdH4+OFUjA/HB4TVd+QA9vqi5HuknrBFejzsvausem2qokLWc2Tqugln3dGYyxfgnFnaOdtdhckttIfuq2UksjoWMoRkiVvu+wtSZBUYpzI4zwAt5lO/5o= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: fde09f85-b7c9-42e3-667a-08d7069f53a9 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Jul 2019 08:02:47.3209 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: qiangqing.zhang@nxp.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4330 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch intends to add CAN FD BitRate Switch(BRS) support in driver. Signed-off-by: Joakim Zhang --- drivers/net/can/flexcan.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 23e9407e33ff..4956ef64944a 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -684,9 +684,13 @@ static netdev_tx_t flexcan_start_xmit(struct sk_buff *= skb, struct net_device *de if (cfd->can_id & CAN_RTR_FLAG) ctrl |=3D FLEXCAN_MB_CNT_RTR; =20 - if (can_is_canfd_skb(skb)) + if (can_is_canfd_skb(skb)) { ctrl |=3D FLEXCAN_MB_CNT_EDL; =20 + if (cfd->flags & CANFD_BRS) + ctrl |=3D FLEXCAN_MB_CNT_BRS; + } + for (i =3D 0; i < cfd->len; i +=3D sizeof(u32)) { data =3D be32_to_cpup((__be32 *)&cfd->data[i]); priv->write(data, &priv->tx_mb->data[i / sizeof(u32)]); @@ -907,6 +911,9 @@ static unsigned int flexcan_mailbox_read(struct can_rx_= offload *offload, bool dr =20 if (reg_ctrl & FLEXCAN_MB_CNT_EDL) { cfd->len =3D can_dlc2len(get_canfd_dlc((reg_ctrl >> 16) & 0x0F)); + + if (reg_ctrl & FLEXCAN_MB_CNT_BRS) + cfd->flags |=3D CANFD_BRS; } else { cfd->len =3D get_can_dlc((reg_ctrl >> 16) & 0x0F); =20 --=20 2.17.1