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: 8914151 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 559BD9F372 for ; Fri, 22 Apr 2016 16:43:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6BCC9202BE for ; Fri, 22 Apr 2016 16:43:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 905012026F for ; Fri, 22 Apr 2016 16:43:22 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ate9X-0003SX-F9; Fri, 22 Apr 2016 16:41:59 +0000 Received: from mail-io0-f194.google.com ([209.85.223.194]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ate8l-0002fp-Gb for linux-arm-kernel@lists.infradead.org; Fri, 22 Apr 2016 16:41:14 +0000 Received: by mail-io0-f194.google.com with SMTP id x35so3984635ioi.0 for ; 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=gU40Z3ZD9XEGLjyGW31KW9EyckrdNoF7kunXbWgP0jPJ26C3ZIKe/lwCf7aJA6Jidg 8daZId4OoiO8WNvvaYNC/Df724GCCeAF5+I8PojSkf+TuynFdgXgdsTCUYsSUFbzYf7q O/Sl856SCbz72q6Kx7XU7MnTfYtw0pAbCRsS/WDh5ns+dtB+tFF6MZuVVclyr1EtaXiz YzIquqmpFfw78xPGLPt7meKmpyCtRlTVWM7DsPasZyvnHJxpgaj4ZyvCCl4n4Xss6Ziu aXlxNGS6rufTf/ci266rbh/75cN3CGZXvrvpwV5C0+qY32hwBmdXCtWYBXHCX2OpXsr5 qj1g== X-Gm-Message-State: AOPr4FUjmOB0H1DuomaD85af82TfdW9pUn8LZiVgZKyBRGYyd3o9oiiZfnXHkEzTaYTPnQ== 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160422_094111_761113_4971CEA5 X-CRM114-Status: GOOD ( 10.78 ) X-Spam-Score: -2.4 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Franklin S Cooper Jr MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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);