@@ -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;
@@ -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;
}
Add support for loopback mode. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/net/can/rockchip/rockchip_canfd-core.c | 7 ++++++- drivers/net/can/rockchip/rockchip_canfd-rx.c | 2 +- 2 files changed, 7 insertions(+), 2 deletions(-)