From nobody Fri Dec 19 09:01:24 2025 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E12F193090 for ; Wed, 4 Sep 2024 08:13:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725437632; cv=none; b=pOYG0UoSrTJGM9g+H8V6Jz1KkuAmsLnI5z2T7sxd0xvblcmFTW2v2IntoIboABMJe2gyHGqJil125zxO+njFVt4Nzrvj35pt/VMy8fgfVaxPveO5XfBodV+G5tYfXVVR9F/zGneo/fs1VNMLHdGiI/CemNu7T++e7p9JAftSx7M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725437632; c=relaxed/simple; bh=44NzGtqpU5BxdFed4h+jxAkMAchbCULQjVzky0gCZl8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=RGXoDY9ceJcaiFkQA9+l6wXLb0knXSLhfUEsYvjHFk/rI6FQ8efrRuNTnh1QWcCUGgT3oNLvgMGGRidPz7Rrc65IaMUHbwhgGXqx890Ql6MoYLwn+tvBqQOu4s2MqgihatJI3LPPOTTv7xtXxXIjbsoOk5/gpX4TI9SJ035chEg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sll98-0007xs-II for linux-kernel@vger.kernel.org; Wed, 04 Sep 2024 10:13:46 +0200 Received: from [2a0a:edc0:0:b01:1d::7b] (helo=bjornoya.blackshift.org) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sll90-005P6J-Kz for linux-kernel@vger.kernel.org; Wed, 04 Sep 2024 10:13:38 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 5354233211C for ; Wed, 04 Sep 2024 08:13:38 +0000 (UTC) Received: from hardanger.blackshift.org (unknown [172.20.34.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by bjornoya.blackshift.org (Postfix) with ESMTPS id E9357331F87; Wed, 04 Sep 2024 08:13:23 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 3cef0a87; Wed, 4 Sep 2024 08:13:20 +0000 (UTC) From: Marc Kleine-Budde Date: Wed, 04 Sep 2024 10:13:03 +0200 Subject: [PATCH can-next v5 19/20] can: rockchip_canfd: add support for CAN_CTRLMODE_LOOPBACK Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240904-rockchip-canfd-v5-19-8ae22bcb27cc@pengutronix.de> References: <20240904-rockchip-canfd-v5-0-8ae22bcb27cc@pengutronix.de> In-Reply-To: <20240904-rockchip-canfd-v5-0-8ae22bcb27cc@pengutronix.de> To: kernel@pengutronix.de, Alibek Omarov , Vincent Mailhol , "David S. 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=2135; i=mkl@pengutronix.de; h=from:subject:message-id; bh=44NzGtqpU5BxdFed4h+jxAkMAchbCULQjVzky0gCZl8=; b=owEBbQGS/pANAwAKASg4oj56LbxvAcsmYgBm2BadeF4wYM0v1GnxVO8JzlK/Z9JuUo4J9b/jb 8J03wALg4KJATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZtgWnQAKCRAoOKI+ei28 bz4RB/4rKhe5OxFZIGDiu6nbR7cur2sbZftGM/dtkfELIjE6CpeIf3duGAb78E2K2DwZcw3Ojys 3hcJoYaXFkEum4QrZmw+upc1uXifqkOF/0tmNt7te4yHz80jchIJDCiAtiOomgULfZEqjgwrDSb 7gZW/MAF+sJ6Q8J9KMTuZQBBU2L0/TJvaIrTAX1h2rZkGYL3z2pJLA2fgt0tlt8VLwDmkyD5G6i xLzGeHX3eGV9CL4gtQWQyQKzwsSLHNPdKSyoUe46sSjuBvDLuVkHAvciE1Or1tQ187kPoaHxycR GjdAx3mdBWdGNf9r3BCNZUoceHt2dPNTCHR1ESEMqtKGlFzO 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-kernel@vger.kernel.org Add support for loopback mode. Tested-by: Alibek Omarov 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/c= an/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 *pr= iv) RKCANFD_REG_MODE_RXSTX_MODE | RKCANFD_REG_MODE_WORK_MODE; =20 + if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) + priv->reg_mode_default |=3D 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 =3D clk_get_rate(priv->clks[0].clk); priv->can.bittiming_const =3D &rkcanfd_bittiming_const; priv->can.data_bittiming_const =3D &rkcanfd_data_bittiming_const; - priv->can.ctrlmode_supported =3D 0; + priv->can.ctrlmode_supported =3D CAN_CTRLMODE_LOOPBACK; if (!(priv->devtype_data.quirks & RKCANFD_QUIRK_CANFD_BROKEN)) priv->can.ctrlmode_supported |=3D CAN_CTRLMODE_FD; priv->can.do_set_mode =3D 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_pri= v *priv) err =3D 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; } =20 --=20 2.45.2