From patchwork Wed Apr 4 19:44:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Austin Christ X-Patchwork-Id: 10323307 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D84216032A for ; Wed, 4 Apr 2018 19:45:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C8CE328FA2 for ; Wed, 4 Apr 2018 19:45:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BD93028FA6; Wed, 4 Apr 2018 19:45:15 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID 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 69F9F28FA2 for ; Wed, 4 Apr 2018 19:45:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751773AbeDDTpO (ORCPT ); Wed, 4 Apr 2018 15:45:14 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:55728 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751698AbeDDTpL (ORCPT ); Wed, 4 Apr 2018 15:45:11 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id F194E60F61; Wed, 4 Apr 2018 19:45:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1522871111; bh=08cWXEogIXFNkSOYfjWPi59uAWJtHPpLAn9dY+/iGQE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GOQj/Kj8ztML1LGV/B4wHLFiWvRi6To7fU5pdK/RDWEFjiF0gPLo62Mf9V35xYpYF Lipj1aUxUlO+mAIagLBCgz2rejWDO5p0lJN5T8B0GsKnFfYhmjtquzpEb6wnvByY/i +PDXgfUPrqlxyptsNDJOdcnvXVRCHk9GO7Em5dws= Received: from austinwc-lnx.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: austinwc@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id D7161607A2; Wed, 4 Apr 2018 19:45:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1522871110; bh=08cWXEogIXFNkSOYfjWPi59uAWJtHPpLAn9dY+/iGQE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BYysuzzyH7R1qRRilretXpJ8Cwx31zVdh9TkfEVpAbDioq4Al5UcSagOWJ96IQM+Z AV2LnrTN3h4v1xZfR2T8+WUtKW3c6AbtfDkoKOLlMUj1mHrKfhRi/IcZf+A4KNggGb mAEIfw2wBZDs+1CMXS2xVjR/uEPXYvrxuSoNksMo= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D7161607A2 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=austinwc@codeaurora.org From: Austin Christ To: wsa@the-dreams.de, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: rruigrok@codeaurora.org, timur@codeaurora.org, Austin Christ Subject: [PATCH 2/4] i2c: qup: Add support for Fast Mode Plus Date: Wed, 4 Apr 2018 13:44:58 -0600 Message-Id: <1522871100-3621-3-git-send-email-austinwc@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1522871100-3621-1-git-send-email-austinwc@codeaurora.org> References: <1522871100-3621-1-git-send-email-austinwc@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Previously the QUP driver limited operation mode to I2C Fast Mode. Add Fast Mode Plus functionality by raising SCL limit from 400kHz to 1MHz. Signed-off-by: Austin Christ --- drivers/i2c/busses/i2c-qup.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c index 80af973..cb14687 100644 --- a/drivers/i2c/busses/i2c-qup.c +++ b/drivers/i2c/busses/i2c-qup.c @@ -136,8 +136,13 @@ */ #define TOUT_MIN 2 +/* I2C Frequency Modes */ +#define I2C_STANDARD_FREQ 100000 +#define I2C_FAST_MODE_FREQ 400000 +#define I2C_FAST_MODE_PLUS_FREQ 1000000 + /* Default values. Use these if FW query fails */ -#define DEFAULT_CLK_FREQ 100000 +#define DEFAULT_CLK_FREQ I2C_STANDARD_FREQ #define DEFAULT_SRC_CLK 20000000 /* @@ -1748,8 +1753,8 @@ static int qup_i2c_probe(struct platform_device *pdev) } nodma: - /* We support frequencies up to FAST Mode (400KHz) */ - if (!clk_freq || clk_freq > 400000) { + /* We support frequencies up to FAST Mode Plus (1MHz) */ + if (!clk_freq || clk_freq > I2C_FAST_MODE_PLUS_FREQ) { dev_err(qup->dev, "clock frequency not supported %d\n", clk_freq); return -EINVAL;