From mboxrd@z Thu Jan 1 00:00:00 1970 From: Baolin Wang Subject: [PATCH v3 0/3] Introduce usb charger framework to deal with the usb gadget power negotation Date: Tue, 18 Aug 2015 19:14:18 +0800 Message-ID: Return-path: Received: from mail-pd0-f175.google.com ([209.85.192.175]:33154 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751084AbbHRLOv (ORCPT ); Tue, 18 Aug 2015 07:14:51 -0400 Received: by pdrh1 with SMTP id h1so67842823pdr.0 for ; Tue, 18 Aug 2015 04:14:51 -0700 (PDT) Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: balbi@ti.com Cc: broonie@kernel.org, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, baolin.wang@linaro.org, gregkh@linuxfoundation.org, peter.chen@freescale.com, sojka@merica.cz, stern@rowland.harvard.edu, r.baldyga@samsung.com, yoshihiro.shimoda.uh@renesas.com, linux-usb@vger.kernel.org, device-mainlining@lists.linuxfoundation.org, sre@kernel.org, dbaryshkov@gmail.com, dwmw2@infradead.org, sameo@linux.intel.com, lee.jones@linaro.org, patches@opensource.wolfsonmicro.com, linux-pm@vger.kernel.org Currently the Linux kernel does not provide any standard integration of this feature that integrates the USB subsystem with the system power regulation provided by PMICs meaning that either vendors must add this in their kernels or USB gadget devices based on Linux (such as mobile phones) may not behave as they should. Providing a standard framework for doing this in the kernel. Now introduce one user with wm831x_power to support and test the usb charger, which is pending testing. Moreover there may be other potential users will use it in future. Changes since v2: - Use macro DEVICE_ATTR_RW()/ATTRIBUTE_GROUPS() and change the method to register the attruibutes. - Remove the 'name' and 'entry' member of struct 'usb_charger'. - Replace devm_kzalloc() with kzalloc() to follow the the lifetime rules. - Other modifications. Baolin Wang (3): gadget: Support for the usb charger framework gadget: Introduce the usb charger framework power: wm831x_power: Support USB charger current limit management drivers/power/wm831x_power.c | 69 +++++ drivers/usb/gadget/Kconfig | 7 + drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/charger.c | 538 +++++++++++++++++++++++++++++++++++++ drivers/usb/gadget/udc/udc-core.c | 41 ++- include/linux/mfd/wm831x/pdata.h | 3 + include/linux/usb/gadget.h | 20 ++ include/linux/usb/usb_charger.h | 138 ++++++++++ 8 files changed, 816 insertions(+), 1 deletion(-) create mode 100644 drivers/usb/gadget/charger.c create mode 100644 include/linux/usb/usb_charger.h -- 1.7.9.5