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arm.linux.org.uk; dkim=none (message not signed) header.d=none; arm.linux.org.uk; dmarc=fail action=none header.from=nxp.com; Received-SPF: Fail (protection.outlook.com: domain of nxp.com does not designate 192.88.168.50 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.168.50; helo=tx30smr01.am.freescale.net; Received: from tx30smr01.am.freescale.net (192.88.168.50) by BN1BFFO11FD015.mail.protection.outlook.com (10.58.144.78) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1075.5 via Frontend Transport; Fri, 19 May 2017 13:49:18 +0000 Received: from b29396-OptiPlex-7040.ap.freescale.net (b29396-OptiPlex-7040.ap.freescale.net [10.192.242.182]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id v4JDmtEO032293; Fri, 19 May 2017 06:49:12 -0700 From: Dong Aisheng To: CC: , , , , , , , , , , , , , , , , , , , , Russell King Subject: [PATCH V3 2/3] clk: add managed version of clk_bulk_get Date: Fri, 19 May 2017 21:49:05 +0800 Message-ID: <1495201746-31841-3-git-send-email-aisheng.dong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1495201746-31841-1-git-send-email-aisheng.dong@nxp.com> References: <1495201746-31841-1-git-send-email-aisheng.dong@nxp.com> X-EOPAttributedMessage: 0 X-Matching-Connectors: 131396753587572418; 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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR0301MB0902 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch introduces the managed version of clk_bulk_get. Cc: Michael Turquette Cc: Stephen Boyd Cc: Russell King Cc: Geert Uytterhoeven Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: Mark Brown Cc: Shawn Guo Cc: Fabio Estevam Cc: Sascha Hauer Cc: Anson Huang Cc: Robin Gong Cc: Bai Ping Cc: Leonard Crestez Cc: Octavian Purdila Signed-off-by: Dong Aisheng --- ChangeLog: v2->v3: no changes v1->v2: only one minor comment change --- drivers/clk/clk-devres.c | 36 ++++++++++++++++++++++++++++++++++++ include/linux/clk.h | 21 +++++++++++++++++++++ 2 files changed, 57 insertions(+) diff --git a/drivers/clk/clk-devres.c b/drivers/clk/clk-devres.c index 3a218c3..d854e26 100644 --- a/drivers/clk/clk-devres.c +++ b/drivers/clk/clk-devres.c @@ -34,6 +34,42 @@ struct clk *devm_clk_get(struct device *dev, const char *id) } EXPORT_SYMBOL(devm_clk_get); +struct clk_bulk_devres { + struct clk_bulk_data *clks; + int num_clks; +}; + +static void devm_clk_bulk_release(struct device *dev, void *res) +{ + struct clk_bulk_devres *devres = res; + + clk_bulk_put(devres->num_clks, devres->clks); +} + +int __must_check devm_clk_bulk_get(struct device *dev, int num_clks, + struct clk_bulk_data *clks) +{ + struct clk_bulk_devres *devres; + int ret; + + devres = devres_alloc(devm_clk_bulk_release, + sizeof(*devres), GFP_KERNEL); + if (!devres) + return -ENOMEM; + + ret = clk_bulk_get(dev, num_clks, clks); + if (!ret) { + devres->clks = clks; + devres->num_clks = num_clks; + devres_add(dev, devres); + } else { + devres_free(devres); + } + + return ret; +} +EXPORT_SYMBOL_GPL(devm_clk_bulk_get); + static int devm_clk_match(struct device *dev, void *res, void *data) { struct clk **c = res; diff --git a/include/linux/clk.h b/include/linux/clk.h index 1201944..1ebccf3 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -281,6 +281,21 @@ int __must_check clk_bulk_get(struct device *dev, int num_clks, struct clk_bulk_data *clks); /** + * devm_clk_bulk_get - managed get multiple clk consumers + * @dev: device for clock "consumer" + * @num_clks: the number of clk_bulk_data + * @clks: the clk_bulk_data table of consumer + * + * Return 0 on success, an errno on failure. + * + * This helper function allows drivers to get several clk + * consumers in one operation with management, the clks will + * automatically be freed when the device is unbound. + */ +int __must_check devm_clk_bulk_get(struct device *dev, int num_clks, + struct clk_bulk_data *clks); + +/** * devm_clk_get - lookup and obtain a managed reference to a clock producer. * @dev: device for clock "consumer" * @id: clock consumer ID @@ -550,6 +565,12 @@ static inline struct clk *devm_clk_get(struct device *dev, const char *id) return NULL; } +static inline int devm_clk_bulk_get(struct device *dev, int num_clks, + struct clk_bulk_data *clks) +{ + return 0; +} + static inline struct clk *devm_get_clk_from_child(struct device *dev, struct device_node *np, const char *con_id) {