From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C23F3C432C0 for ; Sun, 24 Nov 2019 17:30:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9EB44207FC for ; Sun, 24 Nov 2019 17:30:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="UqEa69xK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726990AbfKXRaI (ORCPT ); Sun, 24 Nov 2019 12:30:08 -0500 Received: from mail-wm1-f65.google.com ([209.85.128.65]:35922 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726931AbfKXRaH (ORCPT ); Sun, 24 Nov 2019 12:30:07 -0500 Received: by mail-wm1-f65.google.com with SMTP id n188so11186978wme.1; Sun, 24 Nov 2019 09:30:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Sr+7BNL0b4tCp1MqDsXudPxzWoZbpaPXSrRxNlurcYk=; b=UqEa69xKeg3cqB4VbMFljhQGtuxAd10jRTcPE0LGk4j/hSErxDTUllZ/GrJa/FbIXG ZVT2g7Iv0pXgaqBE3UOEnoydCDGbMzmteXCcELyEpn+smCmGGRiT2J8/oW/+cacN7VnC zTzpErhnp/KBF7MCToR0Zdrk0C1rAOdg9fACXZEh9BFypwjVuXFPEKW/N0ZHME5X4l7n eX4kXDzdAA6JeSzhLoWOm3XEEazDC6+/lbCzA1bVcUUYvZ7tGQQ5OdD8lk56bsETe6eY YMm00Y9+IuadMtL4FawcIBSBWvHNbHtqgVoCsurLldWkwT4PL6f6QZyOJXhJXcOg/z7d HXuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Sr+7BNL0b4tCp1MqDsXudPxzWoZbpaPXSrRxNlurcYk=; b=U3098q1qXq86hNd4vkWfPAFZzacCWXmjajs1Q0gROmA9XYf67XiXmJbQicC9LhpRfu 1bC3ls1z3cEj+KsegRdlTzZ349aUY/nnuW61PzKrN4xWY3XEkIZO1MmJC42FGKU5BDEL qEWFeG8Ek6Rhx1DXftix+Ku3V2VYZAn0jIAYVJpc3nbpQ7SLhkz6jjttzk1i+qddA2Go dOmH7H7cE5A1BoloTxFaLKfKNpc1jv3SroMA/50Ed7br8Ozod8NOCUKvCcUQHWh+EOvi YF3FtNryUR8ZnlHxzCXXBChRGrUzb5xHeYYeCHDG+qMjKU1y6rIhcGVEr6qIwdmrxkxQ bNQw== X-Gm-Message-State: APjAAAVYXgnfdci/GY5iQ69p0r7CGKpskpOsjCA0DpTaM8cjAtvySGeD 2kHAhYo/KlEN7V5r1KwDZUs= X-Google-Smtp-Source: APXvYqwb7kqkYB4bJbTmfa2R2ggNhznLIfWi1+2SWPBX/8mre7n4Sp7dEOjIC8bHGA4RcFkWR4cteA== X-Received: by 2002:a7b:c416:: with SMTP id k22mr7117238wmi.10.1574616605112; Sun, 24 Nov 2019 09:30:05 -0800 (PST) Received: from localhost.localdomain ([2a01:e0a:1f1:d0f0::4e2b:d7ca]) by smtp.gmail.com with ESMTPSA id n13sm5537275wmi.25.2019.11.24.09.30.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 24 Nov 2019 09:30:04 -0800 (PST) From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= To: Thierry Reding , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Maxime Ripard , Chen-Yu Tsai , Philipp Zabel Cc: linux-pwm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Jernej Skrabec , =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= Subject: [PATCH v9 3/6] pwm: sun4i: Add an optional probe for bus clock Date: Sun, 24 Nov 2019 18:29:05 +0100 Message-Id: <20191124172908.10804-4-peron.clem@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191124172908.10804-1-peron.clem@gmail.com> References: <20191124172908.10804-1-peron.clem@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jernej Skrabec H6 PWM core needs bus clock to be enabled in order to work. Add an optional probe for it. Signed-off-by: Jernej Skrabec Signed-off-by: Clément Péron --- drivers/pwm/pwm-sun4i.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index 80026167044b..a6727dd89e28 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -78,6 +78,7 @@ struct sun4i_pwm_data { struct sun4i_pwm_chip { struct pwm_chip chip; + struct clk *bus_clk; struct clk *clk; struct reset_control *rst; void __iomem *base; @@ -391,6 +392,14 @@ static int sun4i_pwm_probe(struct platform_device *pdev) } } + pwm->bus_clk = devm_clk_get_optional(&pdev->dev, "bus"); + if (IS_ERR(pwm->bus_clk)) { + if (PTR_ERR(pwm->rst) != -EPROBE_DEFER) + dev_err(&pdev->dev, "get bus clock failed %pe\n", + pwm->bus_clk); + return PTR_ERR(pwm->bus_clk); + } + pwm->rst = devm_reset_control_get_optional_shared(&pdev->dev, NULL); if (IS_ERR(pwm->rst)) { if (PTR_ERR(pwm->rst) != -EPROBE_DEFER) @@ -407,6 +416,17 @@ static int sun4i_pwm_probe(struct platform_device *pdev) return ret; } + /* + * We're keeping the bus clock on for the sake of simplicity. + * Actually it only needs to be on for hardware register accesses. + */ + ret = clk_prepare_enable(pwm->bus_clk); + if (ret) { + dev_err(&pdev->dev, "cannot prepare and enable bus_clk %pe\n", + ERR_PTR(ret)); + goto err_bus; + } + pwm->chip.dev = &pdev->dev; pwm->chip.ops = &sun4i_pwm_ops; pwm->chip.base = -1; @@ -427,6 +447,8 @@ static int sun4i_pwm_probe(struct platform_device *pdev) return 0; err_pwm_add: + clk_disable_unprepare(pwm->bus_clk); +err_bus: reset_control_assert(pwm->rst); return ret; @@ -441,6 +463,7 @@ static int sun4i_pwm_remove(struct platform_device *pdev) if (ret) return ret; + clk_disable_unprepare(pwm->bus_clk); reset_control_assert(pwm->rst); return 0; -- 2.20.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= Subject: [PATCH v9 3/6] pwm: sun4i: Add an optional probe for bus clock Date: Sun, 24 Nov 2019 18:29:05 +0100 Message-ID: <20191124172908.10804-4-peron.clem@gmail.com> References: <20191124172908.10804-1-peron.clem@gmail.com> Reply-To: peron.clem-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Return-path: Sender: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org In-Reply-To: <20191124172908.10804-1-peron.clem-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , To: Thierry Reding , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Maxime Ripard , Chen-Yu Tsai , Philipp Zabel Cc: linux-pwm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org, Jernej Skrabec , =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= List-Id: linux-pwm@vger.kernel.org From: Jernej Skrabec H6 PWM core needs bus clock to be enabled in order to work. Add an optional probe for it. Signed-off-by: Jernej Skrabec Signed-off-by: Cl=C3=A9ment P=C3=A9ron --- drivers/pwm/pwm-sun4i.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index 80026167044b..a6727dd89e28 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -78,6 +78,7 @@ struct sun4i_pwm_data { =20 struct sun4i_pwm_chip { struct pwm_chip chip; + struct clk *bus_clk; struct clk *clk; struct reset_control *rst; void __iomem *base; @@ -391,6 +392,14 @@ static int sun4i_pwm_probe(struct platform_device *pde= v) } } =20 + pwm->bus_clk =3D devm_clk_get_optional(&pdev->dev, "bus"); + if (IS_ERR(pwm->bus_clk)) { + if (PTR_ERR(pwm->rst) !=3D -EPROBE_DEFER) + dev_err(&pdev->dev, "get bus clock failed %pe\n", + pwm->bus_clk); + return PTR_ERR(pwm->bus_clk); + } + pwm->rst =3D devm_reset_control_get_optional_shared(&pdev->dev, NULL); if (IS_ERR(pwm->rst)) { if (PTR_ERR(pwm->rst) !=3D -EPROBE_DEFER) @@ -407,6 +416,17 @@ static int sun4i_pwm_probe(struct platform_device *pde= v) return ret; } =20 + /* + * We're keeping the bus clock on for the sake of simplicity. + * Actually it only needs to be on for hardware register accesses. + */ + ret =3D clk_prepare_enable(pwm->bus_clk); + if (ret) { + dev_err(&pdev->dev, "cannot prepare and enable bus_clk %pe\n", + ERR_PTR(ret)); + goto err_bus; + } + pwm->chip.dev =3D &pdev->dev; pwm->chip.ops =3D &sun4i_pwm_ops; pwm->chip.base =3D -1; @@ -427,6 +447,8 @@ static int sun4i_pwm_probe(struct platform_device *pdev= ) return 0; =20 err_pwm_add: + clk_disable_unprepare(pwm->bus_clk); +err_bus: reset_control_assert(pwm->rst); =20 return ret; @@ -441,6 +463,7 @@ static int sun4i_pwm_remove(struct platform_device *pde= v) if (ret) return ret; =20 + clk_disable_unprepare(pwm->bus_clk); reset_control_assert(pwm->rst); =20 return 0; --=20 2.20.1 --=20 You received this message because you are subscribed to the Google Groups "= linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to linux-sunxi+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web, visit https://groups.google.com/d/msgid= /linux-sunxi/20191124172908.10804-4-peron.clem%40gmail.com. 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Sun, 24 Nov 2019 09:30:04 -0800 (PST) From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= To: Thierry Reding , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Maxime Ripard , Chen-Yu Tsai , Philipp Zabel Subject: [PATCH v9 3/6] pwm: sun4i: Add an optional probe for bus clock Date: Sun, 24 Nov 2019 18:29:05 +0100 Message-Id: <20191124172908.10804-4-peron.clem@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191124172908.10804-1-peron.clem@gmail.com> References: <20191124172908.10804-1-peron.clem@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191124_093006_919988_E79BF389 X-CRM114-Status: GOOD ( 13.89 ) X-BeenThere: linux-arm-kernel@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, Jernej Skrabec , linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org RnJvbTogSmVybmVqIFNrcmFiZWMgPGplcm5lai5za3JhYmVjQHNpb2wubmV0PgoKSDYgUFdNIGNv cmUgbmVlZHMgYnVzIGNsb2NrIHRvIGJlIGVuYWJsZWQgaW4gb3JkZXIgdG8gd29yay4KCkFkZCBh biBvcHRpb25hbCBwcm9iZSBmb3IgaXQuCgpTaWduZWQtb2ZmLWJ5OiBKZXJuZWogU2tyYWJlYyA8 amVybmVqLnNrcmFiZWNAc2lvbC5uZXQ+ClNpZ25lZC1vZmYtYnk6IENsw6ltZW50IFDDqXJvbiA8 cGVyb24uY2xlbUBnbWFpbC5jb20+Ci0tLQogZHJpdmVycy9wd20vcHdtLXN1bjRpLmMgfCAyMyAr KysrKysrKysrKysrKysrKysrKysrKwogMSBmaWxlIGNoYW5nZWQsIDIzIGluc2VydGlvbnMoKykK CmRpZmYgLS1naXQgYS9kcml2ZXJzL3B3bS9wd20tc3VuNGkuYyBiL2RyaXZlcnMvcHdtL3B3bS1z dW40aS5jCmluZGV4IDgwMDI2MTY3MDQ0Yi4uYTY3MjdkZDg5ZTI4IDEwMDY0NAotLS0gYS9kcml2 ZXJzL3B3bS9wd20tc3VuNGkuYworKysgYi9kcml2ZXJzL3B3bS9wd20tc3VuNGkuYwpAQCAtNzgs NiArNzgsNyBAQCBzdHJ1Y3Qgc3VuNGlfcHdtX2RhdGEgewogCiBzdHJ1Y3Qgc3VuNGlfcHdtX2No aXAgewogCXN0cnVjdCBwd21fY2hpcCBjaGlwOworCXN0cnVjdCBjbGsgKmJ1c19jbGs7CiAJc3Ry dWN0IGNsayAqY2xrOwogCXN0cnVjdCByZXNldF9jb250cm9sICpyc3Q7CiAJdm9pZCBfX2lvbWVt ICpiYXNlOwpAQCAtMzkxLDYgKzM5MiwxNCBAQCBzdGF0aWMgaW50IHN1bjRpX3B3bV9wcm9iZShz dHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQogCQl9CiAJfQogCisJcHdtLT5idXNfY2xrID0g ZGV2bV9jbGtfZ2V0X29wdGlvbmFsKCZwZGV2LT5kZXYsICJidXMiKTsKKwlpZiAoSVNfRVJSKHB3 bS0+YnVzX2NsaykpIHsKKwkJaWYgKFBUUl9FUlIocHdtLT5yc3QpICE9IC1FUFJPQkVfREVGRVIp CisJCQlkZXZfZXJyKCZwZGV2LT5kZXYsICJnZXQgYnVzIGNsb2NrIGZhaWxlZCAlcGVcbiIsCisJ CQkJcHdtLT5idXNfY2xrKTsKKwkJcmV0dXJuIFBUUl9FUlIocHdtLT5idXNfY2xrKTsKKwl9CisK IAlwd20tPnJzdCA9IGRldm1fcmVzZXRfY29udHJvbF9nZXRfb3B0aW9uYWxfc2hhcmVkKCZwZGV2 LT5kZXYsIE5VTEwpOwogCWlmIChJU19FUlIocHdtLT5yc3QpKSB7CiAJCWlmIChQVFJfRVJSKHB3 bS0+cnN0KSAhPSAtRVBST0JFX0RFRkVSKQpAQCAtNDA3LDYgKzQxNiwxNyBAQCBzdGF0aWMgaW50 IHN1bjRpX3B3bV9wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQogCQlyZXR1cm4g cmV0OwogCX0KIAorCS8qCisJICogV2UncmUga2VlcGluZyB0aGUgYnVzIGNsb2NrIG9uIGZvciB0 aGUgc2FrZSBvZiBzaW1wbGljaXR5LgorCSAqIEFjdHVhbGx5IGl0IG9ubHkgbmVlZHMgdG8gYmUg b24gZm9yIGhhcmR3YXJlIHJlZ2lzdGVyIGFjY2Vzc2VzLgorCSAqLworCXJldCA9IGNsa19wcmVw YXJlX2VuYWJsZShwd20tPmJ1c19jbGspOworCWlmIChyZXQpIHsKKwkJZGV2X2VycigmcGRldi0+ ZGV2LCAiY2Fubm90IHByZXBhcmUgYW5kIGVuYWJsZSBidXNfY2xrICVwZVxuIiwKKwkJCUVSUl9Q VFIocmV0KSk7CisJCWdvdG8gZXJyX2J1czsKKwl9CisKIAlwd20tPmNoaXAuZGV2ID0gJnBkZXYt PmRldjsKIAlwd20tPmNoaXAub3BzID0gJnN1bjRpX3B3bV9vcHM7CiAJcHdtLT5jaGlwLmJhc2Ug PSAtMTsKQEAgLTQyNyw2ICs0NDcsOCBAQCBzdGF0aWMgaW50IHN1bjRpX3B3bV9wcm9iZShzdHJ1 Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQogCXJldHVybiAwOwogCiBlcnJfcHdtX2FkZDoKKwlj bGtfZGlzYWJsZV91bnByZXBhcmUocHdtLT5idXNfY2xrKTsKK2Vycl9idXM6CiAJcmVzZXRfY29u dHJvbF9hc3NlcnQocHdtLT5yc3QpOwogCiAJcmV0dXJuIHJldDsKQEAgLTQ0MSw2ICs0NjMsNyBA QCBzdGF0aWMgaW50IHN1bjRpX3B3bV9yZW1vdmUoc3RydWN0IHBsYXRmb3JtX2RldmljZSAqcGRl dikKIAlpZiAocmV0KQogCQlyZXR1cm4gcmV0OwogCisJY2xrX2Rpc2FibGVfdW5wcmVwYXJlKHB3 bS0+YnVzX2Nsayk7CiAJcmVzZXRfY29udHJvbF9hc3NlcnQocHdtLT5yc3QpOwogCiAJcmV0dXJu IDA7Ci0tIAoyLjIwLjEKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxp c3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0 aW5mby9saW51eC1hcm0ta2VybmVsCg==