From patchwork Tue Sep 25 16:33:39 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 1505871 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id EB35840079 for ; Tue, 25 Sep 2012 16:34:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758050Ab2IYQeV (ORCPT ); Tue, 25 Sep 2012 12:34:21 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:44024 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758004Ab2IYQeS (ORCPT ); Tue, 25 Sep 2012 12:34:18 -0400 Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id q8PGYE2m023909; Tue, 25 Sep 2012 11:34:14 -0500 Received: from DLEE74.ent.ti.com (dlee74.ent.ti.com [157.170.170.8]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id q8PGYEUJ000954; Tue, 25 Sep 2012 11:34:14 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE74.ent.ti.com (157.170.170.8) with Microsoft SMTP Server id 14.1.323.3; Tue, 25 Sep 2012 11:34:14 -0500 Received: from localhost.localdomain (h64-6.vpn.ti.com [172.24.64.6]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id q8PGY1Bj005410; Tue, 25 Sep 2012 11:34:12 -0500 From: Tero Kristo To: , , CC: Subject: [PATCHv7 07/21] ARM: OMAP: add support for oscillator setup Date: Tue, 25 Sep 2012 19:33:39 +0300 Message-ID: <1348590833-12335-8-git-send-email-t-kristo@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1348590833-12335-1-git-send-email-t-kristo@ti.com> References: <1348590833-12335-1-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 This contains startup and shutdown times for the oscillator. By default use ULONG_MAX. Oscillator setup is used for calculating and setting up latencies for sleep modes that disable oscillator. Based on a patch from Nishanth Menon . Signed-off-by: Tero Kristo --- arch/arm/mach-omap2/pm.c | 30 ++++++++++++++++++++++++++++++ arch/arm/mach-omap2/pm.h | 8 ++++++++ 2 files changed, 38 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index dfe702b..b98439c 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -38,6 +38,36 @@ static struct omap_device_pm_latency *pm_lats; */ int (*omap_pm_suspend)(void); +/** + * struct omap2_oscillator - Describe the board main oscillator latencies + * @startup_time: oscillator startup latency + * @shutdown_time: oscillator shutdown latency + */ +struct omap2_oscillator { + u32 startup_time; + u32 shutdown_time; +}; + +static struct omap2_oscillator oscillator = { + .startup_time = ULONG_MAX, + .shutdown_time = ULONG_MAX, +}; + +void omap_pm_setup_oscillator(u32 tstart, u32 tshut) +{ + oscillator.startup_time = tstart; + oscillator.shutdown_time = tshut; +} + +void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) +{ + if (!tstart || !tshut) + return; + + *tstart = oscillator.startup_time; + *tshut = oscillator.shutdown_time; +} + static int __init _init_omap_device(char *name) { struct omap_hwmod *oh; diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index bee3911..583b40f 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -136,4 +136,12 @@ static inline int omap4_twl_init(void) } #endif +#ifdef CONFIG_PM +extern void omap_pm_setup_oscillator(u32 tstart, u32 tshut); +extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut); +#else +static inline void omap_pm_setup_oscillator(u32 tstart, u32 tshut) { } +static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { } +#endif + #endif