From patchwork Tue Jan 22 06:33:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alok Chauhan X-Patchwork-Id: 10774907 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E8E5613B5 for ; Tue, 22 Jan 2019 06:34:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D933E2AF53 for ; Tue, 22 Jan 2019 06:34:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CD5122AF40; Tue, 22 Jan 2019 06:34:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6B03B2AF31 for ; Tue, 22 Jan 2019 06:34:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727199AbfAVGeq (ORCPT ); Tue, 22 Jan 2019 01:34:46 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:39872 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726174AbfAVGeq (ORCPT ); Tue, 22 Jan 2019 01:34:46 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 6802B6098A; Tue, 22 Jan 2019 06:34:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1548138884; bh=t+7VFsYr21LVGhDoaiu71aEFa4FmA54Z0rNp7gXcbag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JLl4MQTk3A2hxFYrMUMoECnaUQPMbMKbVawcMUsknj94Uug2lD1Iw6hTRwHg0V+93 mwKNBqdJg8+3PHqxQzQFR5/Am69Z8nFfmpIeY2GJKyArti6rcVPt8REZv8qdMa/8SY F7YuGfa+ryUbtPHp8bJpkEUxcizBUJzv4Ucj+AUg= Received: from alokc-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: alokc@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id BE6E76095F; Tue, 22 Jan 2019 06:34:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1548138877; bh=t+7VFsYr21LVGhDoaiu71aEFa4FmA54Z0rNp7gXcbag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Dkyc32QO63cJ9YXD7K4kbfLq8G6r4jmH2qSsiMXhF/Wd83Z2UFc1MV1N5vcJ6mYnT n8quJGFPCLUTJjspFfnkkQqB3lpvoKyVXLDgBSubYE97uUeVcnbxb4jyfIqnB+n6NE AgX5drNrcMcxiKpLMwEwQq8QbjLaS5yaCkRDMtao= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BE6E76095F Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=alokc@codeaurora.org From: Alok Chauhan To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, linux-serial@vger.kernel.org, Greg Kroah-Hartman , Jiri Slaby Cc: andy.gross@linaro.org, david.brown@linaro.org, georgi.djakov@linaro.org, dianders@chromium.org, swboyd@chromium.org, bjorn.andersson@linaro.org, Alok Chauhan Subject: [PATCH 5/6] tty: serial: qcom_geni_serial: Add interconnect support Date: Tue, 22 Jan 2019 12:03:35 +0530 Message-Id: <1548138816-1149-6-git-send-email-alokc@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1548138816-1149-1-git-send-email-alokc@codeaurora.org> References: <1548138816-1149-1-git-send-email-alokc@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Get the interconnect paths for Uart based Serial Engine device and vote accordingly based on maximum supported Uart frequency. Signed-off-by: Alok Chauhan --- drivers/tty/serial/qcom_geni_serial.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index a72d6d9..e2ea499 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -19,6 +19,7 @@ #include #include #include +#include /* UART specific GENI registers */ #define SE_UART_LOOPBACK_CFG 0x22c @@ -1348,6 +1349,22 @@ static int qcom_geni_serial_probe(struct platform_device *pdev) return ret; } + /* Set the bus quota to a reasonable value */ + port->se.avg_bw = console ? Bps_to_icc(1000) : Bps_to_icc(2500); + port->se.peak_bw = Bps_to_icc(76800000); + ret = geni_interconnect_init(&port->se); + if (ret) { + dev_err(&pdev->dev, "interconnect_init failed %d\n", ret); + return ret; + } + + /* + * Vote for interconnect path early. This has to move as part of + * Runtime PM APIs when implemented for better control betwen + * console and non-console usecases + */ + geni_icc_update_bw(&port->se, true); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -EINVAL; @@ -1385,8 +1402,15 @@ static int __maybe_unused qcom_geni_serial_sys_suspend(struct device *dev) { struct qcom_geni_serial_port *port = dev_get_drvdata(dev); struct uart_port *uport = &port->uport; + int ret; + + ret = uart_suspend_port(uport->private_data, uport); + if (ret) + return ret; + + geni_icc_update_bw(&port->se, false); - return uart_suspend_port(uport->private_data, uport); + return 0; } static int __maybe_unused qcom_geni_serial_sys_resume(struct device *dev) @@ -1394,6 +1418,7 @@ static int __maybe_unused qcom_geni_serial_sys_resume(struct device *dev) struct qcom_geni_serial_port *port = dev_get_drvdata(dev); struct uart_port *uport = &port->uport; + geni_icc_update_bw(&port->se, true); return uart_resume_port(uport->private_data, uport); }