From patchwork Wed Sep 19 05:28:13 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 146998 Delivered-To: patch@linaro.org Received: by 2002:a2e:1648:0:0:0:0:0 with SMTP id 8-v6csp276443ljw; Tue, 18 Sep 2018 22:29:55 -0700 (PDT) X-Google-Smtp-Source: ANB0VdZb2/quHmbY4Mnicmr7TDU981h9EQOT9HJtVDyaIpgZvXXQbQu15aoN7BhXgTq4Mx7ha8B8 X-Received: by 2002:a62:12c7:: with SMTP id 68-v6mr34276983pfs.216.1537334995641; Tue, 18 Sep 2018 22:29:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1537334995; cv=none; d=google.com; s=arc-20160816; b=yMlBqXqcqoSCyxoOxKXKiO627Dc1/2iVVWlojrzhd9fMv+xtNJc1UO9MTRDkPlbZRU t/B5v7edhp+kSYBsq1RnxIJYzn7YipTYfSu6JwJXbgSMJQlpDxb4EyB7ZM07frdPwGNs aJrkUXfbjxLx9tPI4KAvqii0Cz03yjnZzjhNT6+xoZfZhofBZIQ0IERroR3Fw61Gc/fp iIN5mgOvBuzlnrsyFTrDjYS13sNcQ8zuv3mWEkENJZ9XR7SRzKuEKExQ6eO8d0DeC/EM cx45kytrhKsrmsOy9A3TKezpOTYnk8sCqNHCiu6ofmLa3WSX+0Nb5Pn8x7IhMrapiPEC hr0Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature:dkim-filter; bh=aj2NTGH4awcML9Bzx/x5Rd2Hsn7+iuu3rhlxtSTWjQo=; b=N9wnNUXX3tI3hdH8xbwKJXjoFjKi74jtoH/Lc3Gn8eW9BSAz/AsWBDg/mof/j08jjT T3c3U4KyX5R8Oc3nyoeUoroLr1uJ7GGzdmIcVUyPgYjqGG2zcQ/wXrvykmwEjhrXTg4p MxcDRFdRLZahOr9tZd2RVk6sgUKIaOUsLeI6gFqM1CoL7pdz2YoujhF7VCTyOE6Zrc+E 5qCsGO350SVfdoWJQVe4jFHzZfLwdD+3iQYrSvTOlradSIosizt0YzNm2yhsD5g439BH FdvjkQdonpISjeI3kxSDeH7Tt0UMluiTF3yHrhbr6+2IYWtPpnPZUljh/EnrWb/hdRD4 s8Xw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=dl0af6H3; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t19-v6si17782144pgu.285.2018.09.18.22.29.55; Tue, 18 Sep 2018 22:29:55 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=dl0af6H3; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730916AbeISLGD (ORCPT + 32 others); Wed, 19 Sep 2018 07:06:03 -0400 Received: from conuserg-09.nifty.com ([210.131.2.76]:61287 "EHLO conuserg-09.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726972AbeISLFu (ORCPT ); Wed, 19 Sep 2018 07:05:50 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-09.nifty.com with ESMTP id w8J5Sefc016652; Wed, 19 Sep 2018 14:28:43 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-09.nifty.com w8J5Sefc016652 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1537334923; bh=aj2NTGH4awcML9Bzx/x5Rd2Hsn7+iuu3rhlxtSTWjQo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dl0af6H393me43YBwvD4cutxwf5MyhpKTu89gFd/n82ntifDSTARdBaH3CVBMFfVv X2TgQ9+eIZh6Hur1PQreJRuC0D6gt5BNtiwltSDF304NcfZxNqM28nHCmBh0mONhhp zpz2S1hGznFtadgcrQG4u4apQzqGqlonO4D2bFh6RJ3NR0H54hF9ngRtwf7R0zPX2w teOvUHlP8fKDhFQScLxxKG48r2DTxaP4DyHpcXhOWrklw+8xl8pLRJmhR/AQ3Hhyqm s7x1lYel3S3lJcWv9w9p+ixDL0xbcaNvOEKyOHUG7c4AJgm3qn6gbfJlNCTczmurQa BIYMDkJowRbSA== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: Greg KH , linux-serial@vger.kernel.org Cc: devicetree@vger.kernel.org, Rob Herring , Dai Okamura , Masahiro Yamada , Jiri Slaby , linux-kernel@vger.kernel.org, Mark Rutland , linux-arm-kernel@lists.infradead.org Subject: [PATCH 3/3] serial: 8250_uniphier: add auto-flow-control support Date: Wed, 19 Sep 2018 14:28:13 +0900 Message-Id: <1537334893-26079-4-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1537334893-26079-1-git-send-email-yamada.masahiro@socionext.com> References: <1537334893-26079-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dai Okamura Add selective auto-flow-control support for UniPhier serial driver. Signed-off-by: Dai Okamura Signed-off-by: Masahiro Yamada --- Documentation/devicetree/bindings/serial/uniphier-uart.txt | 3 +++ drivers/tty/serial/8250/8250_uniphier.c | 3 +++ 2 files changed, 6 insertions(+) -- 2.7.4 diff --git a/Documentation/devicetree/bindings/serial/uniphier-uart.txt b/Documentation/devicetree/bindings/serial/uniphier-uart.txt index 811c479..7a1bf02 100644 --- a/Documentation/devicetree/bindings/serial/uniphier-uart.txt +++ b/Documentation/devicetree/bindings/serial/uniphier-uart.txt @@ -6,6 +6,9 @@ Required properties: - interrupts: a single interrupt specifier. - clocks: phandle to the input clock. +Optional properties: +-auto-flow-control: enable automatic flow control support. + Example: aliases { serial0 = &serial0; diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c index 1028c02..164ba13 100644 --- a/drivers/tty/serial/8250/8250_uniphier.c +++ b/drivers/tty/serial/8250/8250_uniphier.c @@ -222,6 +222,9 @@ static int uniphier_uart_probe(struct platform_device *pdev) up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE; up.capabilities = UART_CAP_FIFO; + if (of_property_read_bool(dev->of_node, "auto-flow-control")) + up.capabilities |= UART_CAP_AFE; + up.port.serial_in = uniphier_serial_in; up.port.serial_out = uniphier_serial_out; up.dl_read = uniphier_serial_dl_read;