From patchwork Mon Mar 2 17:06:26 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 5915831 Return-Path: X-Original-To: patchwork-linux-arm@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 5DC6DBF440 for ; Mon, 2 Mar 2015 17:11:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5F05A201F2 for ; Mon, 2 Mar 2015 17:11:08 +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 8F25C200B4 for ; Mon, 2 Mar 2015 17:11:07 +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 1YSTpY-0004We-KJ; Mon, 02 Mar 2015 17:08:32 +0000 Received: from pandora.arm.linux.org.uk ([2001:4d48:ad52:3201:214:fdff:fe10:1be6]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YSTnz-0003DI-HU for linux-arm-kernel@lists.infradead.org; Mon, 02 Mar 2015 17:06:57 +0000 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=A6brz68eeAKgRR0Naj7smcnCo94mxkDROESmOCViBmo=; b=XKfgmPMirNaWMEHOTXrpz1KG5l0fp35LNNpyo9EPQhF54MJYPVTD3iMSfQZNvsb3dO3Z35bdqXpBBXiTlYb4+atCfCpQg2mtmifsv/AgxriDk7/dcMoJebG8v3E9D70h27W/S0rvdYmxF95YWT4PWFzNTSIHO8X+RyZowYYyBYo=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2001:4d48:ad52:3201:222:68ff:fe15:37dd]:48326 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 1YSTnc-0004Be-6d; Mon, 02 Mar 2015 17:06:32 +0000 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1YSTnW-0001Jk-Tm; Mon, 02 Mar 2015 17:06:26 +0000 In-Reply-To: <20150302170538.GQ8656@n2100.arm.linux.org.uk> References: <20150302170538.GQ8656@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 05/10] clkdev: add clkdev_create() helper MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Mon, 02 Mar 2015 17:06:26 +0000 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150302_090656_461276_846A728F X-CRM114-Status: GOOD ( 14.40 ) X-Spam-Score: -0.1 (/) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, 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 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 | 52 ++++++++++++++++++++++++++++++++++++++------------ include/linux/clkdev.h | 3 +++ 2 files changed, 43 insertions(+), 12 deletions(-) diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index 043fd3633373..611b9acbad78 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -294,6 +294,19 @@ vclkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, return &cla->cl; } +static struct clk_lookup * +vclkdev_create((struct clk *clk, const char *con_id, const char *dev_fmt, + va_list ap) +{ + struct clk_lookup *cl; + + cl = vclkdev_alloc(clk, 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, ...) { @@ -308,6 +321,28 @@ 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, con_id, dev_fmt, ap); + va_end(ap); + + return cl; +} + int clk_add_alias(const char *alias, const char *alias_dev_name, char *id, struct device *dev) { @@ -317,12 +352,10 @@ int clk_add_alias(const char *alias, const char *alias_dev_name, char *id, if (IS_ERR(r)) return PTR_ERR(r); - l = clkdev_alloc(r, alias, alias_dev_name); + l = vclkdev_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); @@ -362,15 +395,10 @@ int clk_register_clkdev(struct clk *clk, const char *con_id, return PTR_ERR(clk); va_start(ap, dev_fmt); - cl = vclkdev_alloc(clk, con_id, dev_fmt, ap); + cl = vclkdev_create(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 94bad77eeb4a..6f32f6d8b6ee 100644 --- a/include/linux/clkdev.h +++ b/include/linux/clkdev.h @@ -37,6 +37,9 @@ 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 *, char *, struct device *);