Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751394AbdHFMgF (ORCPT ); Sun, 6 Aug 2017 08:36:05 -0400 Received: from mx1.redhat.com ([209.132.183.28]:24040 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751256AbdHFMgC (ORCPT ); Sun, 6 Aug 2017 08:36:02 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 68EF24E4C2 Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=hdegoede@redhat.com From: Hans de Goede To: Darren Hart , Andy Shevchenko , Wolfram Sang , Sebastian Reichel , Greg Kroah-Hartman , Guenter Roeck , Heikki Krogerus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, Liam Breck , Tony Lindgren , linux-pm@vger.kernel.org, devel@driverdev.osuosl.org Subject: [PATCH 01/18] staging: typec: tcpm: Add get_usb2_current_limit tcpc_dev callback Date: Sun, 6 Aug 2017 14:35:38 +0200 Message-Id: <20170806123555.5124-2-hdegoede@redhat.com> In-Reply-To: <20170806123555.5124-1-hdegoede@redhat.com> References: <20170806123555.5124-1-hdegoede@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Sun, 06 Aug 2017 12:36:02 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1628 Lines: 45 A Rp signalling the default current limit indicates that we're possibly connected to an USB2 power-source. In some cases the type-c port-controller may provide the capability to detect the current-limit for USB2 power-sources (through e.g. BC1.2 detection). This commit adds an optional get_usb2_current_limit tcpc_dev callback which allows the port-controller to return the detected current-limit if the CC pin is pulled up with Rp. Signed-off-by: Hans de Goede --- drivers/staging/typec/tcpm.c | 5 ++++- drivers/staging/typec/tcpm.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c index 20eb4ebcf8c3..9f5adace4309 100644 --- a/drivers/staging/typec/tcpm.c +++ b/drivers/staging/typec/tcpm.c @@ -660,7 +660,10 @@ static u32 tcpm_get_current_limit(struct tcpm_port *port) break; case TYPEC_CC_RP_DEF: default: - limit = 0; + if (port->tcpc->get_usb2_current_limit) + limit = port->tcpc->get_usb2_current_limit(port->tcpc); + else + limit = 0; break; } diff --git a/drivers/staging/typec/tcpm.h b/drivers/staging/typec/tcpm.h index 19c307d31a5a..01b7d89379a3 100644 --- a/drivers/staging/typec/tcpm.h +++ b/drivers/staging/typec/tcpm.h @@ -108,6 +108,7 @@ struct tcpc_dev { int (*init)(struct tcpc_dev *dev); int (*get_vbus)(struct tcpc_dev *dev); + int (*get_usb2_current_limit)(struct tcpc_dev *dev); /* Optional */ int (*set_cc)(struct tcpc_dev *dev, enum typec_cc_status cc); int (*get_cc)(struct tcpc_dev *dev, enum typec_cc_status *cc1, enum typec_cc_status *cc2); -- 2.13.3