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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Philipp Zabel , Elaine Zhang , David Jander Cc: Simon Horman , linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Marc Kleine-Budde X-Mailer: b4 0.15-dev-99b12 X-Developer-Signature: v=1; a=openpgp-sha256; l=2085; i=mkl@pengutronix.de; h=from:subject:message-id; bh=pJWpPFSCn3sCCP4vrlGklsSt8C8X6Jas6pWN/uv/+PE=; b=owEBbQGS/pANAwAKASg4oj56LbxvAcsmYgBm0hzywZtTWV4igNjMO2OEf0qve+1RVtZKz3rxo xcrLg7bg+GJATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZtIc8gAKCRAoOKI+ei28 b+UHB/0bekIU85aSffkV0pRC1pyZtDUNEjl+drk8xQrzw7GgnJrNp53WBNqQR5y5NNEXOvK3GAJ XCzYfe3PM6d0sdos1k0Z2IxefC4y7kcJHVi76EGoQ6AsetJOb6qDwMpqZNgNaAkscJ3Sqdrs/Ll VGh0ISxeODl9JAkmGUdyzy9AS1n+T5dqiS+uaftnDOm/iY/J87e/E62n5bzMlk/eUngtQByaqc8 TkK68RRNkMEq93TpHyJR+ja/0hFt2h2pDndXWKiHMfz64vs9lIfuJWAIvSPM3DZixV2CaJ+W7m+ XHWgpLkETPxreM4cYYLzNlfBAkRDZfX8f2IeYEsDp6bit6CI X-Developer-Key: i=mkl@pengutronix.de; a=openpgp; fpr=C1400BA0B3989E6FBC7D5B5C2B5EE211C58AEA54 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240830_202916_063061_93B36EB9 X-CRM114-Status: GOOD ( 16.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for loopback mode. Signed-off-by: Marc Kleine-Budde --- 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(-) diff --git a/drivers/net/can/rockchip/rockchip_canfd-core.c b/drivers/net/can/rockchip/rockchip_canfd-core.c index 015623314e88..8853f6a135da 100644 --- a/drivers/net/can/rockchip/rockchip_canfd-core.c +++ b/drivers/net/can/rockchip/rockchip_canfd-core.c @@ -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; diff --git a/drivers/net/can/rockchip/rockchip_canfd-rx.c b/drivers/net/can/rockchip/rockchip_canfd-rx.c index d862116840eb..475c0409e215 100644 --- a/drivers/net/can/rockchip/rockchip_canfd-rx.c +++ b/drivers/net/can/rockchip/rockchip_canfd-rx.c @@ -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; }