Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754340AbaDXVoy (ORCPT ); Thu, 24 Apr 2014 17:44:54 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:38808 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752605AbaDXVos (ORCPT ); Thu, 24 Apr 2014 17:44:48 -0400 From: Joel Fernandes To: Linux OMAP List , Linux ARM Kernel List , Linux Kernel Mailing List CC: Tony Lindgren , Joel Fernandes Subject: [PATCH 04/26] ARM: OMAP: dmtimer: Add function to check if timer is running Date: Thu, 24 Apr 2014 16:43:47 -0500 Message-ID: <1398375849-6017-5-git-send-email-joelf@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1398375849-6017-1-git-send-email-joelf@ti.com> References: <1398375849-6017-1-git-send-email-joelf@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Inorder to move non-DM timer specific code that modifies the "idlect" mask on OMAP1, from dmtimer code, to OMAP1 specific timer initialization code, we introduce a new function that can possibly be reused for other purposes in the future. The function just checks if a timer is running based on the timer ID which should be same as pdev->id. This allows us to cleanly separate the timer vs non-timer bits and keep the timer bits in the dmtimer code. Signed-off-by: Joel Fernandes --- arch/arm/plat-omap/dmtimer.c | 29 +++++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/dmtimer.h | 2 ++ 2 files changed, 31 insertions(+) diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c index 4debb3d..86b2641 100644 --- a/arch/arm/plat-omap/dmtimer.c +++ b/arch/arm/plat-omap/dmtimer.c @@ -187,6 +187,35 @@ int omap_dm_timer_reserve_systimer(int id) return 0; } +/* + * Check if a timer is running based on timer_id, used for OMAP1 currently. + */ +int omap_dm_timer_is_running(int timer_id) +{ + int i = 1, ret = 0; + struct omap_dm_timer *timer = NULL; + unsigned long flags; + + spin_lock_irqsave(&dm_timer_lock, flags); + list_for_each_entry(timer, &omap_timer_list, node) { + if (i == timer_id) { + u32 l; + l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); + if (l & OMAP_TIMER_CTRL_ST) { + ret = 1; + goto done; + } else { + goto done; + } + } + i++; + } +done: + spin_unlock_irqrestore(&dm_timer_lock, flags); + return ret; +} +EXPORT_SYMBOL_GPL(omap_dm_timer_is_running); + static struct omap_dm_timer *_omap_dm_timer_request(int req_type, void *data) { struct omap_dm_timer *timer = NULL, *t; diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h index 2861b15..41df0a6 100644 --- a/arch/arm/plat-omap/include/plat/dmtimer.h +++ b/arch/arm/plat-omap/include/plat/dmtimer.h @@ -135,6 +135,8 @@ void omap_dm_timer_disable(struct omap_dm_timer *timer); int omap_dm_timer_get_irq(struct omap_dm_timer *timer); +int omap_dm_timer_is_running(int timer_id); + u32 omap_dm_timer_modify_idlect_mask(u32 inputmask); struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/