From patchwork Sat Mar 2 23:34:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836881 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9CBBE1390 for ; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 882902A57F for ; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 79B8F2A586; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1AF3D2A57F for ; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727806AbfCBXgI (ORCPT ); Sat, 2 Mar 2019 18:36:08 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34612 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgG (ORCPT ); Sat, 2 Mar 2019 18:36:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569763; 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=5u9wJOcsmHwHyJffBgLzKv9/tQWZhgJvE36/wVYRcIE=; b=dOqEFBKbX47G2Kp1yl5zIYoRv/AeRxdVeE7ZsZuVGvBlG0AbJtLGM6bloaVYjsimKxBjjq rOzEX/r1d2kZIC4DpFH4kqvZn9g6dNxGaBp2Q25k+J1gy2osCMi3c+bx8Lcdow74J0kKA6 H+u6GUQe+p63a+hwYztwWnOanF8/2fo= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, 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 v10 15/27] pwm: jz4740: Allow selection of PWM channels 0 and 1 Date: Sat, 2 Mar 2019 20:34:01 -0300 Message-Id: <20190302233413.14813-16-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The TCU channels 0 and 1 were previously reserved for system tasks, and thus unavailable for PWM. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- 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. v10: No change 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 f497388fc818..c914589d547b 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);