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=-10.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 C9ED9C433E2 for ; Mon, 22 Jun 2020 14:27:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1F952075A for ; Mon, 22 Jun 2020 14:27:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="fcYOxIUy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729510AbgFVO1z (ORCPT ); Mon, 22 Jun 2020 10:27:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729813AbgFVO1v (ORCPT ); Mon, 22 Jun 2020 10:27:51 -0400 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F60EC061573 for ; Mon, 22 Jun 2020 07:27:51 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id x11so7649264plo.7 for ; Mon, 22 Jun 2020 07:27:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=M9KwMzs626zZhBtIoTQs5efdkplmNJ79hSzl8cSVNjw=; b=fcYOxIUyQqvxk/LMxj5k2PcHWbKksWlVM0RADhm7nGAokdEUmwV3EEiZC6qY8FZN+u MXoiD9Bl8uV3mE4dflId5Ysj9kk2DyS+ixwUWTwMxgQNlEF/UXTDXHxh7aeIfq/mou+U eOEgNlbrFUBNwfhMfJmEyGzg5fmJfkUD5+UTEteGBQmEZK7I1tsSoxz7idIIF4PWOgEv 3wQpxAZvdSHhEhomUs3Z4VP2UfDdFTNS9ukNUxnLQOoybV0TbZMI9blZV8rUJ1CsWUdM EJwzGZlCgI6Rtzeeiy5wd0ZheSlc3cyB8kuXh84pgLq/xOC7zPeMMPf0jJb4+LZ6QsuT hT8A== 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:in-reply-to :references; bh=M9KwMzs626zZhBtIoTQs5efdkplmNJ79hSzl8cSVNjw=; b=UpQAOWKOCLO7XWlhKhwfuoOhIamOjnf2c9JKCQRhpSSTV4wO9cu++rY4PS3ED8gVJz 0UtTh7VILegq23oX35hPhyK/3lWRSSnhipY+zBIYn/ukSoWwhFgTNxD2HkyaKWs2iIeQ g6s51pd6tUnlxAA4gUWC6V2fU2A4cUibz8G9nEc5j3HzkKgi1kme8aCwkHHBz946SHyE C+DAzAUkENfWlfmkDuTEiexIKFzB13EYlc1YCsK+ACcvOmoD9QludRT/PuFkKWr2MegQ mxH1DKljaYvVPKDM1gGfznJ/QcaxICRBLHFFi7n4yAMG5P1luKONqQrliPgRUYdMak45 ZxCg== X-Gm-Message-State: AOAM533A1iIb8cda7n3kPHxdkmBkR7lfTx/qHfWwXom5YgnY/H4NAfdG kWdNqOXZVt1GzG+peKR51FLRyw== X-Google-Smtp-Source: ABdhPJxdk4/xczBSB9mmZ7kd/CjrWcQEW1E+5kTeVyzPqHBNPaFgJntiHv8R1qUiKMAh8yK0vGiMnA== X-Received: by 2002:a17:902:d903:: with SMTP id c3mr18839486plz.229.1592836070328; Mon, 22 Jun 2020 07:27:50 -0700 (PDT) Received: from localhost.localdomain ([117.252.67.186]) by smtp.gmail.com with ESMTPSA id d6sm14547939pjh.5.2020.06.22.07.27.45 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 22 Jun 2020 07:27:49 -0700 (PDT) From: Sumit Garg To: kgdb-bugreport@lists.sourceforge.net, linux-serial@vger.kernel.org Cc: gregkh@linuxfoundation.org, daniel.thompson@linaro.org, jason.wessel@windriver.com, dianders@chromium.org, jslaby@suse.com, linux@armlinux.org.uk, linux-kernel@vger.kernel.org, Sumit Garg Subject: [PATCH 6/7] serial: amba-pl011: Implement poll_get_irq() interface Date: Mon, 22 Jun 2020 19:56:23 +0530 Message-Id: <1592835984-28613-7-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592835984-28613-1-git-send-email-sumit.garg@linaro.org> References: <1592835984-28613-1-git-send-email-sumit.garg@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Support kgdb NMI console feature via implementing poll_get_irq() interface. This will allow usage of RX interrupts to support kgdb entry while serial device is operating in polling mode. Signed-off-by: Sumit Garg --- drivers/tty/serial/amba-pl011.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index c010f63..d620d12 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1637,6 +1637,16 @@ static void pl011_put_poll_char(struct uart_port *port, pl011_write(ch, uap, REG_DR); } +static int pl011_get_poll_irq(struct uart_port *port) +{ + struct uart_amba_port *uap = + container_of(port, struct uart_amba_port, port); + + pl011_write(UART011_RTIM | UART011_RXIM, uap, REG_IMSC); + + return uap->port.irq; +} + #endif /* CONFIG_CONSOLE_POLL */ static int pl011_hwinit(struct uart_port *port) @@ -2145,6 +2155,7 @@ static const struct uart_ops amba_pl011_pops = { .poll_init = pl011_hwinit, .poll_get_char = pl011_get_poll_char, .poll_put_char = pl011_put_poll_char, + .poll_get_irq = pl011_get_poll_irq, #endif }; @@ -2176,6 +2187,7 @@ static const struct uart_ops sbsa_uart_pops = { .poll_init = pl011_hwinit, .poll_get_char = pl011_get_poll_char, .poll_put_char = pl011_put_poll_char, + .poll_get_irq = pl011_get_poll_irq, #endif }; -- 2.7.4