From patchwork Mon Jan 5 15:47:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 5568971 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id D18289F4DC for ; Mon, 5 Jan 2015 15:51:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 121D12011B for ; Mon, 5 Jan 2015 15:51:53 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F376E20166 for ; Mon, 5 Jan 2015 15:51:48 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y89u7-00026X-1W; Mon, 05 Jan 2015 15:49:15 +0000 Received: from mailout4.w1.samsung.com ([210.118.77.14]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y89tb-0001jw-8N for linux-arm-kernel@lists.infradead.org; Mon, 05 Jan 2015 15:48:45 +0000 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout4.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NHP008FOO372S40@mailout4.w1.samsung.com> for linux-arm-kernel@lists.infradead.org; Mon, 05 Jan 2015 15:52:19 +0000 (GMT) X-AuditID: cbfec7f4-b7f126d000001e9a-8b-54aab2417956 Received: from eusync4.samsung.com ( [203.254.199.214]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id C6.64.07834.142BAA45; Mon, 05 Jan 2015 15:48:17 +0000 (GMT) Received: from AMDC1943.digital.local ([106.116.151.171]) by eusync4.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NHP00HBJNWDWI80@eusync4.samsung.com>; Mon, 05 Jan 2015 15:48:17 +0000 (GMT) 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 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= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150105_074843_480617_42A5FA27 X-CRM114-Status: UNSURE ( 9.60 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.0 (-----) Cc: Krzysztof Kozlowski X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 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;