From patchwork Fri Apr 22 16:40:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Franklin Cooper X-Patchwork-Id: 8913991 Return-Path: X-Original-To: patchwork-linux-clk@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 87F1EBF29F for ; Fri, 22 Apr 2016 16:41:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B7E4A20270 for ; Fri, 22 Apr 2016 16:41:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D8CA020254 for ; Fri, 22 Apr 2016 16:41:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754594AbcDVQkx (ORCPT ); Fri, 22 Apr 2016 12:40:53 -0400 Received: from mail-io0-f195.google.com ([209.85.223.195]:33151 "EHLO mail-io0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754584AbcDVQkv (ORCPT ); Fri, 22 Apr 2016 12:40:51 -0400 Received: by mail-io0-f195.google.com with SMTP id x35so3984630ioi.0; Fri, 22 Apr 2016 09:40:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=fnWRYKodZk5sbB6CZ+BZ9YnxB7L/FFK92O4bLkSu9bY=; b=FXL2CU6CEo0wYZyE2FivSbaw0x7xB2SwaBdHZZ5NRiGTxqI4XPgct1Y35exIbyHzfL doHtr0M72j5gyqKigH6Kzqe7l+8Vm4Ef8o7MbZDVXWtuDdc/GwcR3WQGvV6i7uXDmhz8 raAh+x4ZxJrKB2MIGYpN1C7uRV9XiVnOgOHhCl1+7VjaUu86LmqRPjTKcVOe2vJUDJkA +CwqV8tXXiWKPhPKt3ieK6DkcRpqB//FcDMjj7HHry45k/Wt37P8iJrbqgQAISo9QURQ CbmTQRC0ICSlUea2a0QtF28+hMb8uZvNo9CSm2PmAJvYzKV3gvXLzC7uJgyfsXASHXoF 8Awg== X-Gm-Message-State: AOPr4FV4Rumv9ZUamWZgN9QRvLdXvFlVuw5n2wmhFXcD2VeBAcu1HxL4jpS68IZqoCAUsA== X-Received: by 10.107.59.80 with SMTP id i77mr26157637ioa.36.1461343250678; Fri, 22 Apr 2016 09:40:50 -0700 (PDT) Received: from beast-server.fios-router.home ([173.64.219.161]) by smtp.gmail.com with ESMTPSA id e130sm4365781iof.17.2016.04.22.09.40.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 22 Apr 2016 09:40:49 -0700 (PDT) From: Franklin S Cooper Jr To: thierry.reding@gmail.com, tony@atomide.com, paul@pwsan.com, t-kristo@ti.com, linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, robh+dt@kernel.org, devicetree@vger.kernel.org, vigneshr@ti.com, nsekhar@ti.com Cc: Franklin S Cooper Jr Subject: [PATCH v6 4/7] pwms: pwm-ti*: Get the clock from the PWMSS parent when using old bindings Date: Fri, 22 Apr 2016 11:40:35 -0500 Message-Id: <1461343238-29274-5-git-send-email-fcooper@ti.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1461343238-29274-1-git-send-email-fcooper@ti.com> References: <1461343238-29274-1-git-send-email-fcooper@ti.com> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When using the old eCAP and ePWM bindings for AM335x and AM437x the clock can be retrieved from the PWMSS parent. Newer bindings will insure that this clock is provided via device tree. Therefore, update this driver to support the newer and older bindings. In the case of the older binding being used give a warning. Signed-off-by: Franklin S Cooper Jr --- drivers/pwm/pwm-tiecap.c | 7 +++++++ drivers/pwm/pwm-tiehrpwm.c | 7 +++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c index 616af76..a0833c8 100644 --- a/drivers/pwm/pwm-tiecap.c +++ b/drivers/pwm/pwm-tiecap.c @@ -195,6 +195,7 @@ static const struct pwm_ops ecap_pwm_ops = { }; static const struct of_device_id ecap_of_match[] = { + { .compatible = "ti,am3352-ecap" }, { .compatible = "ti,am33xx-ecap" }, {}, }; @@ -213,6 +214,12 @@ static int ecap_pwm_probe(struct platform_device *pdev) return -ENOMEM; clk = devm_clk_get(&pdev->dev, "fck"); + + if (IS_ERR(clk) && of_device_is_compatible(pdev->dev.of_node, "ti,am33xx-ecap")) { + dev_warn(&pdev->dev, "Binding is obsolete.\n"); + clk = devm_clk_get(pdev->dev.parent, "fck"); + } + if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); return PTR_ERR(clk); diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c index 6a41e66..cee29a2 100644 --- a/drivers/pwm/pwm-tiehrpwm.c +++ b/drivers/pwm/pwm-tiehrpwm.c @@ -426,6 +426,7 @@ static const struct pwm_ops ehrpwm_pwm_ops = { }; static const struct of_device_id ehrpwm_of_match[] = { + { .compatible = "ti,am3352-ehrpwm" }, { .compatible = "ti,am33xx-ehrpwm" }, {}, }; @@ -444,6 +445,12 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev) return -ENOMEM; clk = devm_clk_get(&pdev->dev, "fck"); + + if (IS_ERR(clk) && of_device_is_compatible(pdev->dev.of_node, "ti,am33xx-ecap")) { + dev_warn(&pdev->dev, "Binding is obsolete.\n"); + clk = devm_clk_get(pdev->dev.parent, "fck"); + } + if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); return PTR_ERR(clk);