From patchwork Sun Mar 22 23:20:29 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: NeilBrown X-Patchwork-Id: 6068311 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3D14EBF90F for ; Sun, 22 Mar 2015 23:22:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 78B1320220 for ; Sun, 22 Mar 2015 23:22:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 83E592024F for ; Sun, 22 Mar 2015 23:22:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752327AbbCVXVx (ORCPT ); Sun, 22 Mar 2015 19:21:53 -0400 Received: from cantor2.suse.de ([195.135.220.15]:58745 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752301AbbCVXVu (ORCPT ); Sun, 22 Mar 2015 19:21:50 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 299D4ABD0; Sun, 22 Mar 2015 23:21:49 +0000 (UTC) From: NeilBrown To: Sebastian Reichel Date: Mon, 23 Mar 2015 10:20:29 +1100 Subject: [PATCH 09/14] twl4030_charger: only draw USB current as negotiated with host. Cc: NeilBrown , linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, GTA04 owners , inux-pm@vger.kernel.org, Pavel Machek , linux-omap@vger.kernel.org, Lee Jones Message-ID: <20150322232029.23789.13713.stgit@notabene.brown> In-Reply-To: <20150322231635.23789.70149.stgit@notabene.brown> References: <20150322231635.23789.70149.stgit@notabene.brown> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: NeilBrown If the phy has been told what current it can draw, it tells us and now we use that number. Note that 'vbus_draw' is in mA, while usb_cur is in uA. Acked-by: Pavel Machek Signed-off-by: NeilBrown --- drivers/power/twl4030_charger.c | 5 +++++ 1 file changed, 5 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c index df031b0123d0..2042e7619954 100644 --- a/drivers/power/twl4030_charger.c +++ b/drivers/power/twl4030_charger.c @@ -602,6 +602,7 @@ static void twl4030_bci_usb_work(struct work_struct *data) switch (bci->event) { case USB_EVENT_VBUS: case USB_EVENT_CHARGER: + case USB_EVENT_ENUMERATED: twl4030_charger_enable_usb(bci, true); break; case USB_EVENT_NONE: @@ -614,6 +615,7 @@ static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val, void *priv) { struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, usb_nb); + unsigned int *vbus_draw = priv; dev_dbg(bci->dev, "OTG notify %lu\n", val); @@ -624,6 +626,9 @@ static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val, bci->usb_cur = 100000; bci->event = val; + if (val == USB_EVENT_ENUMERATED && vbus_draw && + *vbus_draw * 1000 > bci->usb_cur) + bci->usb_cur = *vbus_draw * 1000; schedule_work(&bci->work); return NOTIFY_OK;