From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751792AbdIOXbi (ORCPT ); Fri, 15 Sep 2017 19:31:38 -0400 Received: from mail-lf0-f66.google.com ([209.85.215.66]:37909 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751610AbdIOXb2 (ORCPT ); Fri, 15 Sep 2017 19:31:28 -0400 X-Google-Smtp-Source: AOwi7QCrDQCRBmwd529Z8L3YlcKRN1UN5xCLVdZQg3j+Ll2Qnr80BPeG4wtPuHsx7lHAeA4bkpHPeg== From: Serge Semin To: richard.leitner@skidata.com, gregkh@linuxfoundation.org, robh+dt@kernel.org, mark.rutland@arm.com Cc: Sergey.Semin@t-platforms.ru, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Serge Semin Subject: [PATCH 3/5] usb: usb251xb: Add max power/current dts nodes Date: Sat, 16 Sep 2017 02:31:11 +0300 Message-Id: <20170915233113.17855-4-fancer.lancer@gmail.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20170915233113.17855-1-fancer.lancer@gmail.com> References: <20170915233113.17855-1-fancer.lancer@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This parameters may be varied in accordance with hardware specifics. So lets add the corresponding settings to the usb251x driver dts specification. Signed-off-by: Serge Semin --- Documentation/devicetree/bindings/usb/usb251xb.txt | 6 ++++++ drivers/usb/misc/usb251xb.c | 20 ++++++++++++++++---- 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt index 3d84626d3..dd59a32e7 100644 --- a/Documentation/devicetree/bindings/usb/usb251xb.txt +++ b/Documentation/devicetree/bindings/usb/usb251xb.txt @@ -44,6 +44,12 @@ Optional properties : device connected. - sp-disabled-ports : Specifies the ports which will be self-power disabled - bp-disabled-ports : Specifies the ports which will be bus-power disabled + - sp-max-{power,current} : Indicates the power/current consumed by hub from + an upstream port (VBUS) when operation as a self-powered hub. The value + is given in mA in a 0 - 100 range (default is 1mA). + - bp-max-{power,current} : Indicates the power/current consumed by hub from + an upstream port (VBUS) when operation as a bus-powered hub. The value + is given in mA in a 0 - 510 range (default is 100mA). - power-on-time-ms : Specifies the time it takes from the time the host initiates the power-on sequence to a port until the port has adequate power. The value is given in ms in a 0 - 510 range (default is 100ms). diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 8101c6212..d6a0ff4ec 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -493,6 +493,22 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, } } + hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF; + if (!of_property_read_u32(np, "sp-max-power", &property_u32)) + hub->max_power_sp = min_t(u8, property_u32 / 2, 50); + + hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS; + if (!of_property_read_u32(np, "bp-max-power", &property_u32)) + hub->max_power_bp = min_t(u8, property_u32 / 2, 255); + + hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF; + if (!of_property_read_u32(np, "sp-max-current", &property_u32)) + hub->max_current_sp = min_t(u8, property_u32 / 2, 50); + + hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS; + if (!of_property_read_u32(np, "bp-max-current", &property_u32)) + hub->max_current_bp = min_t(u8, property_u32 / 2, 255); + hub->power_on_time = USB251XB_DEF_POWER_ON_TIME; if (!of_property_read_u32(np, "power-on-time-ms", &property_u32)) hub->power_on_time = min_t(u8, property_u32 / 2, 255); @@ -532,10 +548,6 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, /* The following parameters are currently not exposed to devicetree, but * may be as soon as needed. */ - hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF; - hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS; - hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF; - hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS; hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE; hub->boost_up = USB251XB_DEF_BOOST_UP; hub->boost_57 = USB251XB_DEF_BOOST_57; -- 2.12.0