From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7FB97C3E8C5 for ; Fri, 27 Nov 2020 17:13:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CA89221EB for ; Fri, 27 Nov 2020 17:13:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="Y9E7KZwN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731631AbgK0RNJ (ORCPT ); Fri, 27 Nov 2020 12:13:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731582AbgK0RNJ (ORCPT ); Fri, 27 Nov 2020 12:13:09 -0500 Received: from mail-pg1-x543.google.com (mail-pg1-x543.google.com [IPv6:2607:f8b0:4864:20::543]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15491C0613D1 for ; Fri, 27 Nov 2020 09:13:09 -0800 (PST) Received: by mail-pg1-x543.google.com with SMTP id k11so4817745pgq.2 for ; Fri, 27 Nov 2020 09:13:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=yn11WTc6kb2VuxzT0TlUqdlna9y4XWGRb8BSebw/zIE=; b=Y9E7KZwNYgu+UtKmQEKvej+l8R73YAobvzahlqlDDMMUXzwHDgAAXQ4tMmXT4Q6zFh q1JLmt7vqegui8FFlMbE4LZcn1AxFgYOp5IymZ+lhA9zDozyfNTSUztJ7Vd4JP47JjjQ neXr3w74M/QJtWHokUbLsOtbHkSeRyvY/4c4hn8OIZ3wEtXD8ICyjnHHS5IG48cm9z7k D9N1mrao8gSHQKA+sH/i7ttMBMqcj9WroV3YvrLxTyeI9St6WjRA9YpDccTrFbqA7/VH PZ5TE998wxZMH48YUm3mK0I/BkwMRwV55AqiNTelNzkSXkNargLQeghplLJ4rbC8UY0R o1DQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=yn11WTc6kb2VuxzT0TlUqdlna9y4XWGRb8BSebw/zIE=; b=CYHlJiTkmvkPfqFcYgT83oB4Il88oTH9w4NlqjhLQbNJQTkkAfKcLoHnQmVndOQ0TA kw3cjxZAve79PJg/1hM3EZuBNPcgjSFW4mhC7fsa96w8vIqrazDnZ16QxLsIJxUZq+fs r6KDAm12Kxz4Y/CWUdDt2kR9E4gTWX1asx6emjKtQ9eYFDeMJK+h5K/8x7G00iJNdkkM WJZeWh4LYhKbNxCovNH+xy6tPKoLcy1uTG5PRLDXR4mnOhtIi5iq6xFPkpNwIy/jc5su pWDrrK9Xm6GDTGS47luU7wK+vZTpcYvlpr+4Kb7MY621AU1zevpR/rk2GAdsIAEIxN2B Mgnw== X-Gm-Message-State: AOAM5327uqXvwHgJoClPHJJqa7/KrNBgzJHdUtSFEwDpw6INsTGpa7Ip MxNdCz0esbRoyJ+P8MUf+Vxk8OIKmZzj X-Google-Smtp-Source: ABdhPJzK+IBpTOBVyErsotds+JFXeXYfAKEwvbw7DB0fvJEBS4uvbMeXeuSZUI8UC8wl889eouB2eg== X-Received: by 2002:a17:90a:d58e:: with SMTP id v14mr11163782pju.191.1606497188446; Fri, 27 Nov 2020 09:13:08 -0800 (PST) Received: from localhost.localdomain ([2409:4072:88d:6f0d:1941:b53e:6208:a8c9]) by smtp.gmail.com with ESMTPSA id 17sm8559823pfu.180.2020.11.27.09.13.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Nov 2020 09:13:07 -0800 (PST) From: Manivannan Sadhasivam To: mkl@pengutronix.de Cc: linux-can@vger.kernel.org, thomas.kopp@microchip.com, Manivannan Sadhasivam Subject: [PATCH] can: mcp251xfd: Add support for internal loopback mode Date: Fri, 27 Nov 2020 22:42:57 +0530 Message-Id: <20201127171257.46040-1-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org MCP251xFD supports internal loopback mode which can be used to verify CAN functionality in the absence of a real CAN device. Signed-off-by: Manivannan Sadhasivam --- drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c index 3297eb7ecc9c..7715b8b14f29 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c @@ -932,6 +932,8 @@ static u8 mcp251xfd_get_normal_mode(const struct mcp251xfd_priv *priv) mode = MCP251XFD_REG_CON_MODE_LISTENONLY; else if (priv->can.ctrlmode & CAN_CTRLMODE_FD) mode = MCP251XFD_REG_CON_MODE_MIXED; + else if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) + mode = MCP251XFD_REG_CON_MODE_INT_LOOPBACK; else mode = MCP251XFD_REG_CON_MODE_CAN2_0; @@ -2801,7 +2803,7 @@ static int mcp251xfd_probe(struct spi_device *spi) priv->can.data_bittiming_const = &mcp251xfd_data_bittiming_const; priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_BERR_REPORTING | CAN_CTRLMODE_FD | - CAN_CTRLMODE_FD_NON_ISO; + CAN_CTRLMODE_FD_NON_ISO | CAN_CTRLMODE_LOOPBACK; priv->ndev = ndev; priv->spi = spi; priv->rx_int = rx_int; -- 2.25.1