From patchwork Fri Apr 3 17:12:53 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 6158371 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 4342DBF4A7 for ; Fri, 3 Apr 2015 17:13:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4E7BF203AD for ; Fri, 3 Apr 2015 17:13:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5C1DC203FB for ; Fri, 3 Apr 2015 17:13:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753851AbbDCRNB (ORCPT ); Fri, 3 Apr 2015 13:13:01 -0400 Received: from pandora.arm.linux.org.uk ([78.32.30.218]:33775 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753535AbbDCRM6 (ORCPT ); Fri, 3 Apr 2015 13:12:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=pandora-2014; h=Date:Sender:Message-Id:Content-Type:Content-Transfer-Encoding:MIME-Version:Subject:To:From:References:In-Reply-To; bh=4GxIzarlXpaRgMp/5HFMJfqBo1wprlVv9qJqAgzA2KE=; b=bprJXASpYUccCjgCq+4OBCE6x6qPLyH5M5iLWbK1TMtcbXyX7ZPpzf9np+tK3tEI9z3an9inX8sZZ6rw3VmEXcrShdX4LN36/re+i+cZF6Dno1GqYMy7no8HMfF9UAMZIBtU9Uinef4w7LKhbFiakUYuTn1LqshrkCV9ah7geEc=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd]:44299 helo=rmk-PC.arm.linux.org.uk) by pandora.arm.linux.org.uk with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1Ye59L-0002pm-Qh; Fri, 03 Apr 2015 18:12:55 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1Ye59J-0001BF-CZ; Fri, 03 Apr 2015 18:12:53 +0100 In-Reply-To: <20150403171149.GC13898@n2100.arm.linux.org.uk> References: <20150403171149.GC13898@n2100.arm.linux.org.uk> From: Russell King To: alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-omap@vger.kernel.org, linux-sh@vger.kernel.org Subject: [PATCH 06/14] clkdev: add clkdev_create() helper MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Fri, 03 Apr 2015 18:12:53 +0100 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=ham 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 Add a helper to allocate and add a clk_lookup structure. This can not only be used in several places in clkdev.c to simplify the code, but more importantly, can be used by callers of the clkdev code to simplify their clkdev creation and registration. Signed-off-by: Russell King --- drivers/clk/clkdev.c | 53 ++++++++++++++++++++++++++++++++++++++------------ include/linux/clkdev.h | 3 +++ 2 files changed, 44 insertions(+), 12 deletions(-) diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index 8e676eafc823..6d992d8b7c47 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -302,6 +302,19 @@ vclkdev_alloc(struct clk_hw *hw, const char *con_id, const char *dev_fmt, return &cla->cl; } +static struct clk_lookup * +vclkdev_create(struct clk_hw *hw, const char *con_id, const char *dev_fmt, + va_list ap) +{ + struct clk_lookup *cl; + + cl = vclkdev_alloc(hw, con_id, dev_fmt, ap); + if (cl) + __clkdev_add(cl); + + return cl; +} + struct clk_lookup * __init_refok clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...) { @@ -316,6 +329,29 @@ clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...) } EXPORT_SYMBOL(clkdev_alloc); +/** + * clkdev_create - allocate and add a clkdev lookup structure + * @clk: struct clk to associate with all clk_lookups + * @con_id: connection ID string on device + * @dev_fmt: format string describing device name + * + * Returns a clk_lookup structure, which can be later unregistered and + * freed. + */ +struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id, + const char *dev_fmt, ...) +{ + struct clk_lookup *cl; + va_list ap; + + va_start(ap, dev_fmt); + cl = vclkdev_create(__clk_get_hw(clk), con_id, dev_fmt, ap); + va_end(ap); + + return cl; +} +EXPORT_SYMBOL_GPL(clkdev_create); + int clk_add_alias(const char *alias, const char *alias_dev_name, const char *con_id, struct device *dev) { @@ -325,12 +361,10 @@ int clk_add_alias(const char *alias, const char *alias_dev_name, if (IS_ERR(r)) return PTR_ERR(r); - l = clkdev_alloc(r, alias, alias_dev_name); + l = clkdev_create(r, alias, "%s", alias_dev_name); clk_put(r); - if (!l) - return -ENODEV; - clkdev_add(l); - return 0; + + return l ? 0 : -ENODEV; } EXPORT_SYMBOL(clk_add_alias); @@ -370,15 +404,10 @@ int clk_register_clkdev(struct clk *clk, const char *con_id, return PTR_ERR(clk); va_start(ap, dev_fmt); - cl = vclkdev_alloc(__clk_get_hw(clk), con_id, dev_fmt, ap); + cl = vclkdev_create(__clk_get_hw(clk), con_id, dev_fmt, ap); va_end(ap); - if (!cl) - return -ENOMEM; - - clkdev_add(cl); - - return 0; + return cl ? 0 : -ENOMEM; } EXPORT_SYMBOL(clk_register_clkdev); diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h index cd93b215e3af..a240b18e86fa 100644 --- a/include/linux/clkdev.h +++ b/include/linux/clkdev.h @@ -38,6 +38,9 @@ struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id, void clkdev_add(struct clk_lookup *cl); void clkdev_drop(struct clk_lookup *cl); +struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id, + const char *dev_fmt, ...); + void clkdev_add_table(struct clk_lookup *, size_t); int clk_add_alias(const char *, const char *, const char *, struct device *);