Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753820AbdLMSyF (ORCPT ); Wed, 13 Dec 2017 13:54:05 -0500 Received: from mail.free-electrons.com ([62.4.15.54]:44442 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753723AbdLMSxn (ORCPT ); Wed, 13 Dec 2017 13:53:43 -0500 From: Alexandre Belloni To: Rob Herring , Daniel Lezcano Cc: Nicolas Ferre , Mark Rutland , Thomas Gleixner , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Alexandre Belloni Subject: [PATCH 2/3] clocksource/drivers: timer-of: parse the chosen node Date: Wed, 13 Dec 2017 19:53:12 +0100 Message-Id: <20171213185313.20017-3-alexandre.belloni@free-electrons.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171213185313.20017-1-alexandre.belloni@free-electrons.com> References: <20171213185313.20017-1-alexandre.belloni@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1594 Lines: 53 Add a way for drivers to know whether the timer they are currently handling is a clocksource or a clockevent. Signed-off-by: Alexandre Belloni --- drivers/clocksource/timer-of.c | 22 ++++++++++++++++++++++ drivers/clocksource/timer-of.h | 3 +++ 2 files changed, 25 insertions(+) diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c index a31990408153..71680eacd390 100644 --- a/drivers/clocksource/timer-of.c +++ b/drivers/clocksource/timer-of.c @@ -195,3 +195,25 @@ void __init timer_of_cleanup(struct timer_of *to) if (to->flags & TIMER_OF_BASE) timer_base_exit(&to->of_base); } + +int __init timer_of_is_type(struct device_node *np, char *type) +{ + struct device_node *node, *timer; + + if (!of_chosen) + return 0; + + node = of_get_child_by_name(of_chosen, type); + if (!node) + return 0; + + timer = of_parse_phandle(node, "timer", 0); + of_node_put(node); + if (!timer) + return 0; + + if (timer == np) + return 1; + + return 0; +} diff --git a/drivers/clocksource/timer-of.h b/drivers/clocksource/timer-of.h index 3f708f1be43d..24923cfe748d 100644 --- a/drivers/clocksource/timer-of.h +++ b/drivers/clocksource/timer-of.h @@ -70,4 +70,7 @@ extern int __init timer_of_init(struct device_node *np, extern void __init timer_of_cleanup(struct timer_of *to); +extern int __init timer_of_is_type(struct device_node *np, char *type); +#define timer_of_is_clocksource(np) timer_of_is_type(np, "linux,clocksource") +#define timer_of_is_clockevent(np) timer_of_is_type(np, "linux,clockevent") #endif -- 2.15.1