Commit edf1dd18 authored by Marc Kleine-Budde's avatar Marc Kleine-Budde
Browse files

can: rockchip_canfd: add support for CAN_CTRLMODE_LOOPBACK 



Add support for loopback mode.

Tested-by: default avatarAlibek Omarov <a1ba.omarov@gmail.com>
Acked-by: default avatarHeiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20240904-rockchip-canfd-v5-19-8ae22bcb27cc@pengutronix.de


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 4e1a18ba

drivers/net/can/rockchip/rockchip_canfd-core.c

+6 −1
Original line number Diff line number Diff line
@@ -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
Original line number Diff line number Diff line
@@ -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;

	}