From patchwork Fri Jun 24 11:05:48 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Cousson X-Patchwork-Id: 915752 X-Patchwork-Delegate: b-cousson@ti.com 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 p5OB6HgK010552 for ; Fri, 24 Jun 2011 11:06:19 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754571Ab1FXLGT (ORCPT ); Fri, 24 Jun 2011 07:06:19 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:35155 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753197Ab1FXLGS (ORCPT ); Fri, 24 Jun 2011 07:06:18 -0400 Received: from dlep36.itg.ti.com ([157.170.170.91]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id p5OB6Gqb000605 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 24 Jun 2011 06:06:16 -0500 Received: from dlep26.itg.ti.com (smtp-le.itg.ti.com [157.170.170.27]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id p5OB6Gtg006251; Fri, 24 Jun 2011 06:06:16 -0500 (CDT) Received: from dlee74.ent.ti.com (localhost [127.0.0.1]) by dlep26.itg.ti.com (8.13.8/8.13.8) with ESMTP id p5OB6Gat005973; Fri, 24 Jun 2011 06:06:16 -0500 (CDT) Received: from dlelxv22.itg.ti.com (172.17.1.197) by dlee74.ent.ti.com (157.170.170.8) with Microsoft SMTP Server id 8.3.106.1; Fri, 24 Jun 2011 06:06:16 -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 p5OB62up024325; Fri, 24 Jun 2011 06:06:14 -0500 From: Benoit Cousson To: CC: rnayak@ti.com, santosh.shilimkar@ti.com, linux-omap@vger.kernel.org, Benoit Cousson Subject: [PATCH 02/14] OMAP2+: hwmod: Init clkdm field at boot time Date: Fri, 24 Jun 2011 13:05:48 +0200 Message-ID: <1308913560-333-3-git-send-email-b-cousson@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: References: 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, 24 Jun 2011 11:06:20 +0000 (UTC) At boot time, lookup the clkdm_name to get the clkdm structure pointer for further usage. Signed-off-by: Benoit Cousson Cc: Paul Walmsley Cc: Rajendra Nayak --- arch/arm/mach-omap2/omap_hwmod.c | 34 +++++++++++++++++++++++++- arch/arm/plat-omap/include/plat/omap_hwmod.h | 1 + 2 files changed, 34 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 55ad6a5..bb63e2d 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -919,9 +919,40 @@ static struct omap_hwmod *_lookup(const char *name) return oh; } +/** + * _init_clkdm - look up a clockdomain name, store pointer in omap_hwmod + * @oh: struct omap_hwmod * + * + * Convert a clockdomain name stored in a struct omap_hwmod into a + * clockdomain pointer, and save it into the struct omap_hwmod. + * return -EINVAL if clkdm_name does not exist or if the lookup failed. + */ +static int _init_clkdm(struct omap_hwmod *oh) +{ + if (cpu_is_omap24xx() || cpu_is_omap34xx()) + return 0; + + if (!oh->clkdm_name) { + pr_warning("omap_hwmod: %s: no clkdm_name\n", oh->name); + return -EINVAL; + } + + oh->clkdm = clkdm_lookup(oh->clkdm_name); + if (!oh->clkdm) { + pr_warning("omap_hwmod: %s: could not associate to clkdm %s\n", + oh->name, oh->clkdm_name); + return -EINVAL; + } + + pr_debug("omap_hwmod: %s: associated to clkdm %s\n", + oh->name, oh->clkdm_name); + + return 0; +} /** - * _init_clocks - clk_get() all clocks associated with this hwmod + * _init_clocks - clk_get() all clocks associated with this hwmod. Retrieve as + * well the clockdomain. * @oh: struct omap_hwmod * * @data: not used; pass NULL * @@ -941,6 +972,7 @@ static int _init_clocks(struct omap_hwmod *oh, void *data) ret |= _init_main_clk(oh); ret |= _init_interface_clks(oh); ret |= _init_opt_clks(oh); + ret |= _init_clkdm(oh); if (!ret) oh->_state = _HWMOD_STATE_CLKS_INITED; diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 5d77c5b..28ea1c8 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -520,6 +520,7 @@ struct omap_hwmod { struct clk *_clk; struct omap_hwmod_opt_clk *opt_clks; char *clkdm_name; + struct clockdomain *clkdm; char *vdd_name; struct voltagedomain *voltdm; struct omap_hwmod_ocp_if **masters; /* connect to *_IA */