From patchwork Fri Aug 30 03:57:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?U2FtIFNoaWggKOWPsueiqeS4iSk=?= X-Patchwork-Id: 11122859 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 651A314DE for ; Fri, 30 Aug 2019 03:57:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 41A6920659 for ; Fri, 30 Aug 2019 03:57:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="MOLVxMW3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 41A6920659 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=44C0tmvo3TxO7Qb3rAM7wHACgc4swEJxtTFurqkIIFw=; b=MOLVxMW3mBOBQ1 IdeemzfabMYrhCXJT0yOW4A4mt95XR2PUOYmdRKtOjM03AX5Jite5o84yIXdyKzqTk+XX3y/giaMW 5yVW3c9FS0cZSxuG5cycb32txztTPIT02DDaU9uLtxHkLxa8kbx21OOfqbZKtxKha4yZJtMQABcBg YOCkXh0ut4SfalPV9DPIW1Q9XNl8/9KCnDHnIBLNetYoNWTh2H56Oobf+ILEGIUApf4Ma6TImHo6D TTJF9pJg4NICVW5E3wW1T9riZ9ze1vBiaQkt7RmZOBWPbMD5xVXzq4j+7pWoBOYwu1XExHSEmvTGg TvsuYHk0erpBs2fLmyiw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i3Y2o-0002iz-SL; Fri, 30 Aug 2019 03:57:50 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i3Y2k-0002gB-Uq for linux-mediatek@lists.infradead.org; Fri, 30 Aug 2019 03:57:48 +0000 X-UUID: cc4a940833c148ba81dc7ce1eabba858-20190829 X-UUID: cc4a940833c148ba81dc7ce1eabba858-20190829 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1813964668; Thu, 29 Aug 2019 19:57:50 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 29 Aug 2019 20:57:48 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 30 Aug 2019 11:57:46 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 30 Aug 2019 11:57:46 +0800 From: Sam Shih To: Rob Herring , Mark Rutland , Matthias Brugger , Thierry Reding Subject: [PATCH v7 03/11] pwm: mediatek: remove a property "has-clks" Date: Fri, 30 Aug 2019 11:57:09 +0800 Message-ID: <1567137437-10041-4-git-send-email-sam.shih@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1567137437-10041-1-git-send-email-sam.shih@mediatek.com> References: <1567137437-10041-1-git-send-email-sam.shih@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 853F9C6FEF7A490E2953782898BBD157C8997D2B8174CBD6EFE23594A706E6AA2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190829_205746_994930_DBC50011 X-CRM114-Status: GOOD ( 13.58 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pwm@vger.kernel.org, Ryder Lee , devicetree@vger.kernel.org, Sam Shih , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, John Crispin Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org We can use fixed-clock to repair mt7628 pwm during configure from userspace. The SoC is legacy MIPS and has no complex clock tree. Due to we can get clock frequency for period calculation from DT fixed-clock, so we can remove has-clock property, and directly use devm_clk_get and clk_get_rate. Signed-off-by: Ryder Lee Signed-off-by: Sam Shih --- Changes since v6: Based on fixed-clock in DT, we can remove has-clks property Changes since v5: 1. Follow reviewer's comments Make the changes of fix mt7628 pwm as a single patch Changes since v4: - Follow reviewers's comments 1. use pc->soc->has_clks to check clocks exist or not. 2. Add error message when probe() unable to get clks - Fixes bug when SoC is old mips which has no complex clock tree. if clocks not exist, use the new property from DT to apply period caculation; otherwise, use clk_get_rate to get clock frequency and apply period caculation. --- drivers/pwm/pwm-mediatek.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c index ebd62629e3fe..07e843aeddb1 100644 --- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -57,7 +57,6 @@ static const char * const mtk_pwm_clk_name[MTK_CLK_MAX] = { struct mtk_pwm_platform_data { unsigned int fallback_npwms; bool pwm45_fixup; - bool has_clks; }; /** @@ -87,9 +86,6 @@ static int mtk_pwm_clk_enable(struct pwm_chip *chip, struct pwm_device *pwm) struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); int ret; - if (!pc->soc->has_clks) - return 0; - ret = clk_prepare_enable(pc->clks[MTK_CLK_TOP]); if (ret < 0) return ret; @@ -116,9 +112,6 @@ static void mtk_pwm_clk_disable(struct pwm_chip *chip, struct pwm_device *pwm) { struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); - if (!pc->soc->has_clks) - return; - clk_disable_unprepare(pc->clks[MTK_CLK_PWM1 + pwm->hwpwm]); clk_disable_unprepare(pc->clks[MTK_CLK_MAIN]); clk_disable_unprepare(pc->clks[MTK_CLK_TOP]); @@ -262,11 +255,13 @@ static int mtk_pwm_probe(struct platform_device *pdev) npwms = MTK_CLK_MAX - 2; } - for (i = 0; i < npwms + 2 && pc->soc->has_clks; i++) { - pc->clks[i] = devm_clk_get(&pdev->dev, mtk_pwm_clk_name[i]); + for (i = 0; i < npwms + 2 ; i++) { + pc->clks[i] = devm_clk_get(&pdev->dev, + mtk_pwm_clk_name[i]); if (IS_ERR(pc->clks[i])) { dev_err(&pdev->dev, "clock: %s fail: %ld\n", - mtk_pwm_clk_name[i], PTR_ERR(pc->clks[i])); + mtk_pwm_clk_name[i], + PTR_ERR(pc->clks[i])); return PTR_ERR(pc->clks[i]); } } @@ -297,25 +292,21 @@ static int mtk_pwm_remove(struct platform_device *pdev) static const struct mtk_pwm_platform_data mt2712_pwm_data = { .fallback_npwms = 8, .pwm45_fixup = false, - .has_clks = true, }; static const struct mtk_pwm_platform_data mt7622_pwm_data = { .fallback_npwms = 6, .pwm45_fixup = false, - .has_clks = true, }; static const struct mtk_pwm_platform_data mt7623_pwm_data = { .fallback_npwms = 5, .pwm45_fixup = true, - .has_clks = true, }; static const struct mtk_pwm_platform_data mt7628_pwm_data = { .fallback_npwms = 4, .pwm45_fixup = true, - .has_clks = false, }; static const struct of_device_id mtk_pwm_of_match[] = {