From patchwork Fri Jul 1 21:18:21 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Cousson X-Patchwork-Id: 938802 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p61LTcSQ014702 for ; Fri, 1 Jul 2011 21:52:29 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757676Ab1GAVSd (ORCPT ); Fri, 1 Jul 2011 17:18:33 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:36476 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757638Ab1GAVSc (ORCPT ); Fri, 1 Jul 2011 17:18:32 -0400 Received: from dlep33.itg.ti.com ([157.170.170.112]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id p61LITC6012436 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 1 Jul 2011 16:18:29 -0500 Received: from dlep26.itg.ti.com (smtp-le.itg.ti.com [157.170.170.27]) by dlep33.itg.ti.com (8.13.7/8.13.8) with ESMTP id p61LISF8026554; Fri, 1 Jul 2011 16:18:28 -0500 (CDT) Received: from dlee73.ent.ti.com (localhost [127.0.0.1]) by dlep26.itg.ti.com (8.13.8/8.13.8) with ESMTP id p61LISoe022461; Fri, 1 Jul 2011 16:18:28 -0500 (CDT) Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE73.ent.ti.com (157.170.170.88) with Microsoft SMTP Server id 8.3.106.1; Fri, 1 Jul 2011 16:18:28 -0500 Received: from localhost.localdomain (lncpu04.tif.ti.com [137.167.102.15]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id p61LIQWA018159; Fri, 1 Jul 2011 16:18:27 -0500 From: Benoit Cousson To: CC: rnayak@ti.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Benoit Cousson , Kevin Hilman , Todd Poynor Subject: [PATCH v2] OMAP: omap_device: Create clkdev entry for hwmod main_clk Date: Fri, 1 Jul 2011 23:18:21 +0200 Message-ID: <1309555101-21198-1-git-send-email-b-cousson@ti.com> X-Mailer: git-send-email 1.7.0.4 MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 01 Jul 2011 21:52:31 +0000 (UTC) Extend the existing function to create clkdev for every optional clocks to add a well one "fck" alias for the main_clk of the omap_hwmod. It will allow to remove these static clkdev entries from the clockXXX_data.c file. Signed-off-by: Benoit Cousson Cc: Paul Walmsley Cc: Kevin Hilman Cc: Todd Poynor --- The first version of that patch was included in the modulemode series. It is now a standalone patch due to the lack of dependency with the original series. I fixed a clk_put issue reported by Todd. Benoit arch/arm/plat-omap/omap_device.c | 85 ++++++++++++++++++++++--------------- 1 files changed, 50 insertions(+), 35 deletions(-) diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index 49fc0df..9a02d95 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -241,56 +241,71 @@ static inline struct omap_device *_find_by_pdev(struct platform_device *pdev) return container_of(pdev, struct omap_device, pdev); } +static void _add_clkdev(struct omap_device *od, const char *clk_alias, + const char *clk_name) +{ + struct clk *r; + struct clk_lookup *l; + + if (!clk_alias || !clk_name) + return; + + pr_debug("omap_device: %s: Creating %s -> %s\n", + dev_name(&od->pdev.dev), clk_alias, clk_name); + + r = clk_get_sys(dev_name(&od->pdev.dev), clk_alias); + if (!IS_ERR(r)) { + pr_warning("omap_device: %s: %s already exist\n", + dev_name(&od->pdev.dev), clk_alias); + clk_put(r); + return; + } + + r = omap_clk_get_by_name(clk_name); + if (IS_ERR(r)) { + pr_err("omap_device: %s: omap_clk_get_by_name for %s failed\n", + dev_name(&od->pdev.dev), clk_name); + return; + } + + l = clkdev_alloc(r, clk_alias, dev_name(&od->pdev.dev)); + if (!l) { + pr_err("omap_device: %s: clkdev_alloc for %s failed\n", + dev_name(&od->pdev.dev), clk_alias); + return; + } + + clkdev_add(l); +} + /** - * _add_optional_clock_clkdev - Add clkdev entry for hwmod optional clocks + * _add_hwmod_clocks_clkdev - Add clkdev entry for hwmod optional clocks + * and main clock * @od: struct omap_device *od + * @oh: struct omap_hwmod *oh * - * For every optional clock present per hwmod per omap_device, this function - * adds an entry in the clkdev table of the form - * if it does not exist already. + * For the main clock and every optional clock present per hwmod per + * omap_device, this function adds an entry in the clkdev table of the + * form if it does not exist already. * * The function is called from inside omap_device_build_ss(), after * omap_device_register. * * This allows drivers to get a pointer to its optional clocks based on its role * by calling clk_get(, ). + * In the case of the main clock, a "fck" alias is used. * * No return value. */ -static void _add_optional_clock_clkdev(struct omap_device *od, - struct omap_hwmod *oh) +static void _add_hwmod_clocks_clkdev(struct omap_device *od, + struct omap_hwmod *oh) { int i; - for (i = 0; i < oh->opt_clks_cnt; i++) { - struct omap_hwmod_opt_clk *oc; - struct clk *r; - struct clk_lookup *l; - - oc = &oh->opt_clks[i]; - - if (!oc->_clk) - continue; - - r = clk_get_sys(dev_name(&od->pdev.dev), oc->role); - if (!IS_ERR(r)) - continue; /* clkdev entry exists */ + _add_clkdev(od, "fck", oh->main_clk); - r = omap_clk_get_by_name((char *)oc->clk); - if (IS_ERR(r)) { - pr_err("omap_device: %s: omap_clk_get_by_name for %s failed\n", - dev_name(&od->pdev.dev), oc->clk); - continue; - } - - l = clkdev_alloc(r, oc->role, dev_name(&od->pdev.dev)); - if (!l) { - pr_err("omap_device: %s: clkdev_alloc for %s failed\n", - dev_name(&od->pdev.dev), oc->role); - return; - } - clkdev_add(l); - } + for (i = 0; i < oh->opt_clks_cnt; i++) + _add_clkdev(od, oh->opt_clks[i].role, oh->opt_clks[i].clk); } @@ -497,7 +512,7 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id, for (i = 0; i < oh_cnt; i++) { hwmods[i]->od = od; - _add_optional_clock_clkdev(od, hwmods[i]); + _add_hwmod_clocks_clkdev(od, hwmods[i]); } if (ret)