From patchwork Thu May 10 16:13:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Austin Christ X-Patchwork-Id: 10392053 X-Patchwork-Delegate: agross@codeaurora.org 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 2A1A86053D for ; Thu, 10 May 2018 16:15:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B1D2286E2 for ; Thu, 10 May 2018 16:15:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 19C2928C3C; Thu, 10 May 2018 16:15:15 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, 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 71575286E2 for ; Thu, 10 May 2018 16:14:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964892AbeEJQOH (ORCPT ); Thu, 10 May 2018 12:14:07 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:55914 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966026AbeEJQOG (ORCPT ); Thu, 10 May 2018 12:14:06 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id DB2BC60767; Thu, 10 May 2018 16:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1525968845; bh=yAjXe7urUizkCNSc6SOWJyCgo1KfWSEYk03JmV5GdIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NLCO2ZCTIR/FZh87ngdLOgHkFOsTW1quxr2SxpHjCIEoeTiQMRplI6MxAtXIzCq9C /WJjtYgjrgDJIl1O/a9aMLXV6rZ+2/Q35vI3hBC4yvuh9xNGMBExO/pd0IXL4PD8Qn XZkUfPLtcbBBa86Fn2hI1wbP7LaVBn/+fn8IIWXs= 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 326AA60767; Thu, 10 May 2018 16:14:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1525968845; bh=yAjXe7urUizkCNSc6SOWJyCgo1KfWSEYk03JmV5GdIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NLCO2ZCTIR/FZh87ngdLOgHkFOsTW1quxr2SxpHjCIEoeTiQMRplI6MxAtXIzCq9C /WJjtYgjrgDJIl1O/a9aMLXV6rZ+2/Q35vI3hBC4yvuh9xNGMBExO/pd0IXL4PD8Qn XZkUfPLtcbBBa86Fn2hI1wbP7LaVBn/+fn8IIWXs= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 326AA60767 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 Cc: linux-arm-msm@vger.kernel.org, sricharan@codeaurora.org, timur@codeaurora.org, rruigrok@codeaurora.org, andy.gross@linaro.org, david.brown@linaro.org, Austin Christ Subject: [PATCH v3 2/4] i2c: qup: Add support for Fast Mode Plus Date: Thu, 10 May 2018 10:13:55 -0600 Message-Id: <1525968837-13381-3-git-send-email-austinwc@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1525968837-13381-1-git-send-email-austinwc@codeaurora.org> References: <1525968837-13381-1-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 Reviewed-by: Sricharan R Reviewed-by: Andy Gross --- v1: - Initial v2: - No changes v3: - No changes --- 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 c024f85..ce5f215 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 /* @@ -1745,8 +1750,8 @@ 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;