From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754162AbbAEPsZ (ORCPT ); Mon, 5 Jan 2015 10:48:25 -0500 Received: from mailout4.w1.samsung.com ([210.118.77.14]:55683 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753269AbbAEPsU (ORCPT ); Mon, 5 Jan 2015 10:48:20 -0500 X-AuditID: cbfec7f4-b7f126d000001e9a-8b-54aab2417956 From: Krzysztof Kozlowski To: "Rafael J. Wysocki" , Len Brown , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , Pavel Machek , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [RFC PATCHv2 01/19] power_supply: Add driver private data Date: Mon, 05 Jan 2015 16:47:44 +0100 Message-id: <1420472882-10463-2-git-send-email-k.kozlowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1420472882-10463-1-git-send-email-k.kozlowski@samsung.com> References: <1420472882-10463-1-git-send-email-k.kozlowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprKLMWRmVeSWpSXmKPExsVy+t/xa7qOm1aFGBydJG8x6cl7ZouJKycz W7x+YWix8+FbNovl+/oZLTY9vsZqcXnXHDaLz71HGC3unjrKZnHm9CVWi9O7Sxy4PXbOusvu sXmFlsemVZ1sHpuX1HtsudrO4tG3ZRWjx4rV39k9Pm+SC+CI4rJJSc3JLEst0rdL4Mp4+PcT S0GjYMXL3SvZGhhX83UxcnBICJhIHPvH3sXICWSKSVy4t56ti5GLQ0hgKaPEwqmfGCGcPiaJ HY8fsIFUsQkYS2xevgSsSkTgCZPE9NaTLCAJZgFDiZ/v/oCNEhZwkviybguYzSKgKjFx2VUm EJtXwF3i/eoVUOvkJE4em8wKYnMKeEg0/b0ANkcIqObDs1+sExh5FzAyrGIUTS1NLihOSs81 1CtOzC0uzUvXS87P3cQICcovOxgXH7M6xCjAwajEw+txYmWIEGtiWXFl7iFGCQ5mJRHeV+mr QoR4UxIrq1KL8uOLSnNSiw8xMnFwSjUwhmwrPX3n+yOmr0VyWee7j94SLD9oVRbl+N4iV7gq +Ewe82zj1QGvnXcnHk1dv0F+x4vudxJKU/Wv5Wt0vLk4y2z1p07j+9o/RBvm6iiqqd5JmHdG 74X8P/Zs29jzM0KSVCQ/H5syu/K0c7hZEsfhwJZF57s63FMndtdeSZ7Wb7X0vXF++wppJZbi jERDLeai4kQAfs7msSgCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allow drivers to store private data inside power_supply structure for later usage in power supply operations. Usage of driver private data is necessary to access driver's state container object from power supply calls (like get_property()) if struct 'power_supply' is a stored there as a pointer, for example: struct some_driver_info { struct i2c_client *client; struct power_supply *power_supply; ... } In such case one cannot use container_of() and must store pointer to state container as private data. Signed-off-by: Krzysztof Kozlowski --- drivers/power/power_supply_core.c | 6 ++++++ include/linux/power_supply.h | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index 694e8cddd5c1..84ef3f40e7bf 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -629,6 +629,12 @@ void power_supply_unregister(struct power_supply *psy) } EXPORT_SYMBOL_GPL(power_supply_unregister); +void *power_supply_get_drvdata(struct power_supply *psy) +{ + return psy->drv_data; +} +EXPORT_SYMBOL_GPL(power_supply_get_drvdata); + static int __init power_supply_class_init(void) { power_supply_class = class_create(THIS_MODULE, "power_supply"); diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 096dbced02ac..a5743f24e03e 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -209,6 +209,9 @@ struct power_supply { /* For APM emulation, think legacy userspace. */ int use_for_apm; + /* Driver private data */ + void *drv_data; + /* private */ struct device *dev; struct work_struct changed_work; @@ -281,6 +284,7 @@ extern int power_supply_register_no_ws(struct device *parent, extern void power_supply_unregister(struct power_supply *psy); extern int power_supply_powers(struct power_supply *psy, struct device *dev); +extern void *power_supply_get_drvdata(struct power_supply *psy); /* For APM emulation, think legacy userspace. */ extern struct class *power_supply_class; -- 1.9.1