From mboxrd@z Thu Jan 1 00:00:00 1970 From: Baolin Wang Subject: [PATCH v13 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Date: Thu, 23 Jun 2016 16:57:56 +0800 Message-ID: Return-path: Received: from mail-pf0-f176.google.com ([209.85.192.176]:35343 "EHLO mail-pf0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751568AbcFWI6P (ORCPT ); Thu, 23 Jun 2016 04:58:15 -0400 Received: by mail-pf0-f176.google.com with SMTP id c2so26865725pfa.2 for ; Thu, 23 Jun 2016 01:58:14 -0700 (PDT) Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: balbi@kernel.org, gregkh@linuxfoundation.org, sre@kernel.org, dbaryshkov@gmail.com, dwmw2@infradead.org Cc: robh@kernel.org, jun.li@nxp.com, m.szyprowski@samsung.com, ruslan.bilovol@gmail.com, peter.chen@freescale.com, stern@rowland.harvard.edu, r.baldyga@samsung.com, grygorii.strashko@ti.com, yoshihiro.shimoda.uh@renesas.com, lee.jones@linaro.org, broonie@kernel.org, ckeepax@opensource.wolfsonmicro.com, patches@opensource.wolfsonmicro.com, baolin.wang@linaro.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, device-mainlining@lists.linuxfoundation.org, linux-kernel@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. Thus provide a standard framework for doing this in 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 v12: - Remove the class and device things. - Link usb charger to udc-core.ko. - Create one "charger" subdirectory which holds all charger-related attributes. Changes since v11: - Reviewed and tested by Li Jun. Changes since v10: - Introduce usb_charger_get_state() function to check charger state. - Remove the mutex lock in usb_charger_set_cur_limit_by_type() function in case will be issued in atomic context. Baolin Wang (4): usb: gadget: Introduce the usb charger framework usb: gadget: Support for the usb charger framework usb: gadget: Integrate with the usb gadget supporting for usb charger power: wm831x_power: Support USB charger current limit management drivers/power/wm831x_power.c | 69 ++++ drivers/usb/gadget/Kconfig | 8 + drivers/usb/gadget/udc/Makefile | 4 +- drivers/usb/gadget/udc/charger.c | 723 +++++++++++++++++++++++++++++++++++++ drivers/usb/gadget/udc/udc-core.c | 11 + include/linux/mfd/wm831x/pdata.h | 3 + include/linux/usb/charger.h | 166 +++++++++ include/linux/usb/gadget.h | 11 + include/uapi/linux/usb/charger.h | 31 ++ 9 files changed, 1025 insertions(+), 1 deletion(-) create mode 100644 drivers/usb/gadget/udc/charger.c create mode 100644 include/linux/usb/charger.h create mode 100644 include/uapi/linux/usb/charger.h -- 1.7.9.5