From patchwork Thu Dec 27 18:13:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 1018954 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=crapouillou.net header.i=@crapouillou.net header.b="VqdQMgDA"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43QdJW6m67z9s7h for ; Fri, 28 Dec 2018 05:14:03 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727153AbeL0SOC (ORCPT ); Thu, 27 Dec 2018 13:14:02 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:53846 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727026AbeL0SOA (ORCPT ); Thu, 27 Dec 2018 13:14:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1545934437; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=3168832JMPbMn1JDoOvcnDrXcFxDhbr15lAqwArQBs8=; b=VqdQMgDA7EsObgDcfEK18FWh7v5cKrD38YYcvPksOgUofBS/teUiQGPGK4zWhzNNEYC8ih gpf0KeBSg8/v9X2hRYwQ/tBGU6v5rhql42jCXAdG4tx1N1GFuhFeQj/y+WuFWY/eN5QlSZ cTU9IoEfupLbi+t6Oioy0ZJCT/zH/5A= From: Paul Cercueil To: Thierry Reding , Rob Herring , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v9 15/27] pwm: jz4740: Allow selection of PWM channels 0 and 1 Date: Thu, 27 Dec 2018 19:13:07 +0100 Message-Id: <20181227181319.31095-16-paul@crapouillou.net> In-Reply-To: <20181227181319.31095-1-paul@crapouillou.net> References: <20181227181319.31095-1-paul@crapouillou.net> Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org The TCU channels 0 and 1 were previously reserved for system tasks, and thus unavailable for PWM. Signed-off-by: Paul Cercueil --- Notes: v6: New patch v7: No change v8: ingenic_tcu_[request,release]_channel are dropped. We now use the memory resources provided to the driver to detect whether or not we are allowed to use the TCU channel. v9: Drop previous system. Call a API function provided by the clocksource driver to know if we can use the channel as PWM. drivers/pwm/pwm-jz4740.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index dd80a2cf6528..b6e105e774bd 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -44,11 +44,7 @@ static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) char clk_name[16]; int ret; - /* - * Timers 0 and 1 are used for system tasks, so they are unavailable - * for use as PWMs. - */ - if (pwm->hwpwm < 2) + if (!ingenic_tcu_pwm_can_use_chn(pwm->hwpwm)) return -EBUSY; snprintf(clk_name, sizeof(clk_name), "timer%u", pwm->hwpwm);