From nobody Fri Dec 19 08:57:21 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 6439D1C173E for ; Fri, 30 Aug 2024 19:27:12 +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=1725046037; cv=none; b=F66QNXkJqhWlr3c/QRkQzpXmKJpSpJgZsEsh8q6J6t+xj6a9CLWJ4nq1JySYIih6TiZ9w1dAI9X+PYni2rJFO0yn+PA+JUnLJF6I+H7I1158rHzruYeiV428dtiR9Oq//6TXWGjwmQ9AQAB8yn2vRNv99qDLWEw7jApA6zt1Ns8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725046037; c=relaxed/simple; bh=pJWpPFSCn3sCCP4vrlGklsSt8C8X6Jas6pWN/uv/+PE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WGAJyyaUHl3S/EfMgo6u04xsrC/E8JHgpbfXWwkC8rTgpa4EfUXi2Yioa54OXMmMRjmB73Q7CCE2vqKOnMS+mIKX6zwHh9Jcucb3nDj5Z6IqYKsPDpXgQNSCIsjlRkqX0M1vU6WbKm7N+ex2rda+vgkuRfD5ZOTBgx/LGRg3jDU= 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 1sk7H3-0006Qs-Nk for linux-kernel@vger.kernel.org; Fri, 30 Aug 2024 21:27:09 +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 1sk7Gv-004DvD-FO for linux-kernel@vger.kernel.org; Fri, 30 Aug 2024 21:27:01 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 13E7A32E2B7 for ; Fri, 30 Aug 2024 19:27:01 +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 D5C3832E122; Fri, 30 Aug 2024 19:26:47 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 00dd0844; Fri, 30 Aug 2024 19:26:45 +0000 (UTC) From: Marc Kleine-Budde Date: Fri, 30 Aug 2024 21:26:16 +0200 Subject: [PATCH can-next v3 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: <20240830-rockchip-canfd-v3-19-d426266453fa@pengutronix.de> References: <20240830-rockchip-canfd-v3-0-d426266453fa@pengutronix.de> In-Reply-To: <20240830-rockchip-canfd-v3-0-d426266453fa@pengutronix.de> To: kernel@pengutronix.de, 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=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-kernel@vger.kernel.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/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