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can: rockchip_canfd: add support for CAN_CTRLMODE_LOOPBACK

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Add support for loopback mode.

Tested-by: Alibek Omarov <a1ba.omarov@gmail.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20240904-rockchip-canfd-v5-19-8ae22bcb27cc@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde
2023-12-25 18:51:11 +01:00
parent 4e1a18bab1
commit edf1dd18c8
2 changed files with 7 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/can/rockchip/rockchip_canfd-core.c
+6 -1
View File
@@ -276,6 +276,11 @@ static void rkcanfd_chip_start(struct rkcanfd_priv *priv)
RKCANFD_REG_MODE_RXSTX_MODE |
RKCANFD_REG_MODE_WORK_MODE;
if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
priv->reg_mode_default |= RKCANFD_REG_MODE_LBACK_MODE |
RKCANFD_REG_MODE_SILENT_MODE |
RKCANFD_REG_MODE_SELF_TEST;
/* mask, i.e. ignore:
* - TIMESTAMP_COUNTER_OVERFLOW_INT - timestamp counter overflow interrupt
* - TX_ARBIT_FAIL_INT - TX arbitration fail interrupt
@@ -894,7 +899,7 @@ static int rkcanfd_probe(struct platform_device *pdev)
priv->can.clock.freq = clk_get_rate(priv->clks[0].clk);
priv->can.bittiming_const = &rkcanfd_bittiming_const;
priv->can.data_bittiming_const = &rkcanfd_data_bittiming_const;
priv->can.ctrlmode_supported = 0;
priv->can.ctrlmode_supported = CAN_CTRLMODE_LOOPBACK;
if (!(priv->devtype_data.quirks & RKCANFD_QUIRK_CANFD_BROKEN))
priv->can.ctrlmode_supported |= CAN_CTRLMODE_FD;
priv->can.do_set_mode = rkcanfd_set_mode;
drivers/net/can/rockchip/rockchip_canfd-rx.c
+1 -1
View File
@@ -243,7 +243,7 @@ static int rkcanfd_handle_rx_int_one(struct rkcanfd_priv *priv)
err = rkcanfd_rxstx_filter(priv, cfd, header->ts, &tx_done);
if (err)
return err;
if (tx_done)
if (tx_done && !(priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK))
return 0;
}