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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 B64F0C282C2 for ; Sun, 10 Feb 2019 20:37:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 816482145D for ; Sun, 10 Feb 2019 20:37:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="STWyQAIL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726366AbfBJUhC (ORCPT ); Sun, 10 Feb 2019 15:37:02 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:36339 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725971AbfBJUg7 (ORCPT ); Sun, 10 Feb 2019 15:36:59 -0500 Received: by mail-wm1-f66.google.com with SMTP id p6so13021549wmc.1 for ; Sun, 10 Feb 2019 12:36:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=cbmwev5IAtsY+6KH87DmxvW4mR3mVnCvDZlijKdF0L8=; b=STWyQAIL0oL8tmQdyhU+J2LwBJ2Oillvy6nV4VTbICoWg7pK+LK45bw37ffUmBvEBH wO47eponkKOl2CEcFXpH25w52Ehu0sd/Tpy7nvz5P1Ka1hgSXHwhK21gBFbFqDnACbHN KAZ2XS3BTwodw0WOX0TyP5WY3x4f7fFLnmzCZL/UtgA+HGMQXriwA2G01lX5uyGhtODh 6pR15GUmhnuzr4VDAs7oI6uh3IYEESmT/gFq4q7DQSoXfIUgQASf5mx0AEjEHjevb2A7 wGQdBa0w6RlHp4U5C7w15cGdJMFLAHHETcRo3t17bdCtjZKn6ChZYVMXzhluQSRiTdWu aN/g== 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:mime-version:content-transfer-encoding; bh=cbmwev5IAtsY+6KH87DmxvW4mR3mVnCvDZlijKdF0L8=; b=t49J2yWiR6NOpOtla5XgoC/ZOfzysE82KoI8O8YvFgnGDSeF4KGJWO6/brssEDRET/ 5YB9W5Lb/0udSXEky6dRp26jy7MiFTpr89tEWEndslcwIhdbYNBiMuylYg/C9W3zeHfv bcK9tKDTwlOCPgHI+m31VzwKpKhII0IfRNbj16bjbbwAMvYS1wG9QTH14ZgtaRW43ETF aNdAq+WHyFPihwIGS/DRLb8/qyLOX6EBu/MQFU3SLEx0aPjGmiMLd3y4FexnDezgT4y9 /BXCUOLF104U0WIZ6E7eD7rbWwDEjnM4q1JrqpOkx7XBE6j3l4/miCcAGNUAXRV2+F20 xfdQ== X-Gm-Message-State: AHQUAuZaySyvV+XHgZQvJ5/UBB7eRfrxEg6QGBIFoblMwiohIGc4zCv+ TRj/jg6+WZ4oWD7AGTz3wJuTrXdA X-Google-Smtp-Source: AHgI3IZaFFiDyS+01WZ+OdQuySLQUSAfsYzFEnjXl/IHumFWUo29QD35p37oPdaqRq4hJAffZBPl3w== X-Received: by 2002:a1c:2e43:: with SMTP id u64mr6875876wmu.52.1549831016917; Sun, 10 Feb 2019 12:36:56 -0800 (PST) Received: from localhost.localdomain ([46.216.193.115]) by smtp.gmail.com with ESMTPSA id a14sm6871858wrr.13.2019.02.10.12.36.56 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 10 Feb 2019 12:36:56 -0800 (PST) Received: from jek by localhost.localdomain with local (Exim 4.92-RC4) (envelope-from ) id 1gsvqQ-0005ei-Mw; Sun, 10 Feb 2019 23:36:54 +0300 From: Yauhen Kharuzhy To: linux-kernel@vger.kernel.org Cc: MyungJoo Ham , Andy Shevchenko , Hans de Goede , Yauhen Kharuzhy Subject: [PATCH 1/2] extcon-intel-cht-wc: Make charger detection co-existed with OTG host mode Date: Sun, 10 Feb 2019 23:36:48 +0300 Message-Id: <20190210203649.21691-2-jekhor@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190210203649.21691-1-jekhor@gmail.com> References: <20190210203649.21691-1-jekhor@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Whiskey Cove Cherry Trail PMIC requires disabling OTG host mode before of charger detection procedure. Do this by manipulationg of CHGRCTRL1 register. Source: APCI DSDT code of Lenovo Yoga Book YB1-X91L and open-sourced Intel's drivers. Signed-off-by: Yauhen Kharuzhy --- drivers/extcon/extcon-intel-cht-wc.c | 38 +++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/drivers/extcon/extcon-intel-cht-wc.c b/drivers/extcon/extcon-intel-cht-wc.c index 5ef215297101..4f6ba249bc30 100644 --- a/drivers/extcon/extcon-intel-cht-wc.c +++ b/drivers/extcon/extcon-intel-cht-wc.c @@ -29,7 +29,16 @@ #define CHT_WC_CHGRCTRL0_DBPOFF BIT(6) #define CHT_WC_CHGRCTRL0_CHR_WDT_NOKICK BIT(7) -#define CHT_WC_CHGRCTRL1 0x5e17 +#define CHT_WC_CHGRCTRL1 0x5e17 +#define CHT_WC_CHGRCTRL1_DBPEN_MASK BIT(7) +#define CHT_WC_CHGRCTRL1_OTGMODE BIT(6) +#define CHT_WC_CHGRCTRL1_FTEMP_EVENT BIT(5) +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_1500 BIT(4) +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_900 BIT(3) +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_500 BIT(2) +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_150 BIT(1) +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_100 BIT(0) + #define CHT_WC_USBSRC 0x5e29 #define CHT_WC_USBSRC_STS_MASK GENMASK(1, 0) @@ -198,6 +207,29 @@ static void cht_wc_extcon_set_5v_boost(struct cht_wc_extcon_data *ext, dev_err(ext->dev, "Error writing Vbus GPIO CTLO: %d\n", ret); } +static void cht_wc_extcon_set_otgmode(struct cht_wc_extcon_data *ext, + bool enable) +{ + unsigned int chgrctrl1; + int ret; + + ret = regmap_read(ext->regmap, CHT_WC_CHGRCTRL1, &chgrctrl1); + if (ret) { + dev_err(ext->dev, "Error reading CHGRCTRL1 reg: %d\n", ret); + return; + } + + if (enable) + chgrctrl1 |= CHT_WC_CHGRCTRL1_OTGMODE; + else + chgrctrl1 &= ~(CHT_WC_CHGRCTRL1_OTGMODE); + + ret = regmap_write(ext->regmap, CHT_WC_CHGRCTRL1, chgrctrl1); + if (ret) + dev_err(ext->dev, + "Error writing CHGRCTRL1 OTG mode bit: %d\n", ret); +} + /* Small helper to sync EXTCON_CHG_USB_SDP and EXTCON_USB state */ static void cht_wc_extcon_set_state(struct cht_wc_extcon_data *ext, unsigned int cable, bool state) @@ -222,10 +254,14 @@ static void cht_wc_extcon_pwrsrc_event(struct cht_wc_extcon_data *ext) id = cht_wc_extcon_get_id(ext, pwrsrc_sts); if (id == USB_ID_GND) { + cht_wc_extcon_set_otgmode(ext, true); + /* The 5v boost causes a false VBUS / SDP detect, skip */ goto charger_det_done; } + cht_wc_extcon_set_otgmode(ext, false); + /* Plugged into a host/charger or not connected? */ if (!(pwrsrc_sts & CHT_WC_PWRSRC_VBUS)) { /* Route D+ and D- to PMIC for future charger detection */ -- 2.20.1