From patchwork Fri Dec 20 16:34:22 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 3389831 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5047E9F380 for ; Fri, 20 Dec 2013 16:35:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3C393206DE for ; Fri, 20 Dec 2013 16:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E329D206E6 for ; Fri, 20 Dec 2013 16:35:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755688Ab3LTQfY (ORCPT ); Fri, 20 Dec 2013 11:35:24 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:33507 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755633Ab3LTQfY (ORCPT ); Fri, 20 Dec 2013 11:35:24 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id rBKGYu1r009041; Fri, 20 Dec 2013 10:34:56 -0600 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id rBKGYuep008583; Fri, 20 Dec 2013 10:34:56 -0600 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.2.342.3; Fri, 20 Dec 2013 10:34:55 -0600 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id rBKGYh6Y031953; Fri, 20 Dec 2013 10:34:53 -0600 From: Tero Kristo To: , , , , , , CC: , Subject: [PATCHv12 04/49] clk: mux: add support for registering mux clock from descriptor Date: Fri, 20 Dec 2013 18:34:22 +0200 Message-ID: <1387557274-22583-4-git-send-email-t-kristo@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1387557274-22583-1-git-send-email-t-kristo@ti.com> References: <1387557274-22583-1-git-send-email-t-kristo@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 New clk_register_desc() call can be used to register this clock type now. Signed-off-by: Tero Kristo --- drivers/clk/clk-mux.c | 37 +++++++++++++++++++++++++++++++++++++ include/linux/clk-provider.h | 20 ++++++++++++++++++++ 2 files changed, 57 insertions(+) diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c index 4f96ff3..2cbed08 100644 --- a/drivers/clk/clk-mux.c +++ b/drivers/clk/clk-mux.c @@ -27,8 +27,12 @@ * parent - parent is adjustable through clk_set_parent */ +/* resolve struct clk_mux from inner struct clk_hw member */ #define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw) +/* resolve struct clk_mux_desc from inner struct clk_desc member */ +#define to_hw_desc(_desc) container_of(_desc, struct clk_mux_desc, desc) + static u8 clk_mux_get_parent(struct clk_hw *hw) { struct clk_mux *mux = to_clk_mux(hw); @@ -177,3 +181,36 @@ struct clk *clk_register_mux(struct device *dev, const char *name, NULL, lock); } EXPORT_SYMBOL_GPL(clk_register_mux); + +struct clk_hw *clk_register_mux_desc(struct device *dev, struct clk_desc *desc) +{ + struct clk_mux *mux; + struct clk_mux_desc *hw_desc; + + hw_desc = to_hw_desc(desc); + + /* allocate mux clock */ + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + + /* populate struct clk_mux assignments */ + mux->reg = hw_desc->reg; + mux->table = hw_desc->table; + mux->mask = hw_desc->mask; + mux->shift = hw_desc->shift; + mux->flags = hw_desc->flags; + mux->lock = hw_desc->lock; + + if (!desc->ops) { + if (mux->flags & CLK_MUX_READ_ONLY) + desc->ops = &clk_mux_ro_ops; + else + desc->ops = &clk_mux_ops; + } + + desc->flags |= CLK_IS_BASIC; + + return &mux->hw; +} +EXPORT_SYMBOL_GPL(clk_register_mux_desc); diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index bf89ab4..ea5281c 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -391,6 +391,25 @@ struct clk_mux { spinlock_t *lock; }; +/** + * struct clk_mux_desc - init descriptor for multiplexer clock + * @desc: handle between common and hardware-specific interfaces + * @reg: register controlling multiplexer + * @shift: shift to multiplexer bit field + * @width: width of multiplexer bit field + * @flags: hardware-specific flags + * @lock: register lock + */ +struct clk_mux_desc { + struct clk_desc desc; + void __iomem *reg; + u32 *table; + u32 mask; + u8 shift; + u8 flags; + spinlock_t *lock; +}; + #define CLK_MUX_INDEX_ONE BIT(0) #define CLK_MUX_INDEX_BIT BIT(1) #define CLK_MUX_HIWORD_MASK BIT(2) @@ -399,6 +418,7 @@ struct clk_mux { extern const struct clk_ops clk_mux_ops; extern const struct clk_ops clk_mux_ro_ops; +struct clk_hw *clk_register_mux_desc(struct device *dev, struct clk_desc *desc); struct clk *clk_register_mux(struct device *dev, const char *name, const char **parent_names, u8 num_parents, unsigned long flags, void __iomem *reg, u8 shift, u8 width,