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 C0D03C432C0 for ; Sun, 24 Nov 2019 17:30:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9D760207FC for ; Sun, 24 Nov 2019 17:30:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="R4nVdGmb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726912AbfKXRaE (ORCPT ); Sun, 24 Nov 2019 12:30:04 -0500 Received: from mail-wr1-f66.google.com ([209.85.221.66]:41532 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726784AbfKXRaE (ORCPT ); Sun, 24 Nov 2019 12:30:04 -0500 Received: by mail-wr1-f66.google.com with SMTP id b18so14667584wrj.8; Sun, 24 Nov 2019 09:30:02 -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=ZYFwEIE1V4FYviy3HfGWOu1YC137BU6qFV2JCNaspsM=; b=R4nVdGmbxb/sU9t4pMb9ieOCb0Ig3onMEUMKW67rm055djQFNNus9F8m6tppSUZrKf 7k1DLC0T1bLyQAvrNNYM7A3w8a/7USxIeMNo+2zv3Sznhunnkxz9IAtkXkqbJJMBH+mI GKbvmeFuf+wwge4w4XFh+Ycuh7Adx5t3+Etr0qgz5WRDb81N3CJ07M+/lzuL5t1y5q6E ERyec0nPt5gDm90ld+tuD8rtRoPJpb9eEDMt1uHwbSw4fu/0rl9deUSLH5YcT8OtErfS qJbExGUdP0ZbHFoDoyhu5xK/mPSty0f3qtIeHxEFYk6RpO+LYRob54X/OJD1bBnX6gk7 zUvQ== 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=ZYFwEIE1V4FYviy3HfGWOu1YC137BU6qFV2JCNaspsM=; b=pZ/Pz0OYBzXrqrQUXp7srzPn+v7hoecgVxorJC4V55lOlmBtlZPTZry+MNm9Rvmhy1 6YLlCQxurKa0O2zeDIKP1d0cKJTXr1CNBc/+r7YNyLpS+131zkGqnwwTEZHXAtmnrJvN MNGUSMkJOeVskBLrA49soP/x2+/pvBGRFh2ddpDrGBZ9wlUOMWOu5JBGNK1Rw9+VWZYD 2HmPOI1SUQFk+3ZfKSGIGcHEFopi5wF0EDMOvaI7aKuM1KpS/J3ILi1BJCKVZk/5QeyC ejiQMQdpc7zMNnYnQVHvYOvtAHPCuIvsFdeNZPhOv5dRF855F5EFZmDk/CNb4RykSZez IRmw== X-Gm-Message-State: APjAAAXorelkV+02IAHgtOwae2isi8r4jWGIlzdRsVTnf3uZC7lLLi49 lUpYUfQedIwQh3oG2efDeYE= X-Google-Smtp-Source: APXvYqy28wuYUH31pkTeF6gqI821J6tzCh9ACuT8BpF1tD5bYMQvaf6TVGG/7ORii+bAKQDExzXHmQ== X-Received: by 2002:adf:e550:: with SMTP id z16mr4175991wrm.315.1574616601645; Sun, 24 Nov 2019 09:30:01 -0800 (PST) Received: from localhost.localdomain ([2a01:e0a:1f1:d0f0::4e2b:d7ca]) by smtp.gmail.com with ESMTPSA id n13sm5537275wmi.25.2019.11.24.09.29.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 24 Nov 2019 09:30:01 -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 1/6] pwm: sun4i: Add an optional probe for reset line Date: Sun, 24 Nov 2019 18:29:03 +0100 Message-Id: <20191124172908.10804-2-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 deasserted reset line in order to work. Add an optional probe for it. Signed-off-by: Jernej Skrabec Reviewed-by: Uwe Kleine-König Signed-off-by: Clément Péron --- drivers/pwm/pwm-sun4i.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index 581d23287333..487899d4cc3f 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -78,6 +79,7 @@ struct sun4i_pwm_data { struct sun4i_pwm_chip { struct pwm_chip chip; struct clk *clk; + struct reset_control *rst; void __iomem *base; spinlock_t ctrl_lock; const struct sun4i_pwm_data *data; @@ -364,6 +366,22 @@ static int sun4i_pwm_probe(struct platform_device *pdev) if (IS_ERR(pwm->clk)) return PTR_ERR(pwm->clk); + pwm->rst = devm_reset_control_get_optional_shared(&pdev->dev, NULL); + if (IS_ERR(pwm->rst)) { + if (PTR_ERR(pwm->rst) != -EPROBE_DEFER) + dev_err(&pdev->dev, "get reset failed %pe\n", + pwm->rst); + return PTR_ERR(pwm->rst); + } + + /* Deassert reset */ + ret = reset_control_deassert(pwm->rst); + if (ret) { + dev_err(&pdev->dev, "cannot deassert reset control: %pe\n", + ERR_PTR(ret)); + return ret; + } + pwm->chip.dev = &pdev->dev; pwm->chip.ops = &sun4i_pwm_ops; pwm->chip.base = -1; @@ -376,19 +394,31 @@ static int sun4i_pwm_probe(struct platform_device *pdev) ret = pwmchip_add(&pwm->chip); if (ret < 0) { dev_err(&pdev->dev, "failed to add PWM chip: %d\n", ret); - return ret; + goto err_pwm_add; } platform_set_drvdata(pdev, pwm); return 0; + +err_pwm_add: + reset_control_assert(pwm->rst); + + return ret; } static int sun4i_pwm_remove(struct platform_device *pdev) { struct sun4i_pwm_chip *pwm = platform_get_drvdata(pdev); + int ret; + + ret = pwmchip_remove(&pwm->chip); + if (ret) + return ret; + + reset_control_assert(pwm->rst); - return pwmchip_remove(&pwm->chip); + return 0; } static struct platform_driver sun4i_pwm_driver = { -- 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 1/6] pwm: sun4i: Add an optional probe for reset line Date: Sun, 24 Nov 2019 18:29:03 +0100 Message-ID: <20191124172908.10804-2-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 deasserted reset line in order to work. Add an optional probe for it. Signed-off-by: Jernej Skrabec Reviewed-by: Uwe Kleine-K=C3=B6nig Signed-off-by: Cl=C3=A9ment P=C3=A9ron --- drivers/pwm/pwm-sun4i.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index 581d23287333..487899d4cc3f 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -78,6 +79,7 @@ struct sun4i_pwm_data { struct sun4i_pwm_chip { struct pwm_chip chip; struct clk *clk; + struct reset_control *rst; void __iomem *base; spinlock_t ctrl_lock; const struct sun4i_pwm_data *data; @@ -364,6 +366,22 @@ static int sun4i_pwm_probe(struct platform_device *pde= v) if (IS_ERR(pwm->clk)) return PTR_ERR(pwm->clk); =20 + 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) + dev_err(&pdev->dev, "get reset failed %pe\n", + pwm->rst); + return PTR_ERR(pwm->rst); + } + + /* Deassert reset */ + ret =3D reset_control_deassert(pwm->rst); + if (ret) { + dev_err(&pdev->dev, "cannot deassert reset control: %pe\n", + ERR_PTR(ret)); + return ret; + } + pwm->chip.dev =3D &pdev->dev; pwm->chip.ops =3D &sun4i_pwm_ops; pwm->chip.base =3D -1; @@ -376,19 +394,31 @@ static int sun4i_pwm_probe(struct platform_device *pd= ev) ret =3D pwmchip_add(&pwm->chip); if (ret < 0) { dev_err(&pdev->dev, "failed to add PWM chip: %d\n", ret); - return ret; + goto err_pwm_add; } =20 platform_set_drvdata(pdev, pwm); =20 return 0; + +err_pwm_add: + reset_control_assert(pwm->rst); + + return ret; } =20 static int sun4i_pwm_remove(struct platform_device *pdev) { struct sun4i_pwm_chip *pwm =3D platform_get_drvdata(pdev); + int ret; + + ret =3D pwmchip_remove(&pwm->chip); + if (ret) + return ret; + + reset_control_assert(pwm->rst); =20 - return pwmchip_remove(&pwm->chip); + return 0; } =20 static struct platform_driver sun4i_pwm_driver =3D { --=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/20191124172908.10804-2-peron.clem%40gmail.com. 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Sun, 24 Nov 2019 09:30:01 -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 1/6] pwm: sun4i: Add an optional probe for reset line Date: Sun, 24 Nov 2019 18:29:03 +0100 Message-Id: <20191124172908.10804-2-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_093003_501046_2E851EDB X-CRM114-Status: GOOD ( 16.71 ) 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 cmUgbmVlZHMgZGVhc3NlcnRlZCByZXNldCBsaW5lIGluIG9yZGVyIHRvIHdvcmsuCgpBZGQgYW4g b3B0aW9uYWwgcHJvYmUgZm9yIGl0LgoKU2lnbmVkLW9mZi1ieTogSmVybmVqIFNrcmFiZWMgPGpl cm5lai5za3JhYmVjQHNpb2wubmV0PgpSZXZpZXdlZC1ieTogVXdlIEtsZWluZS1Lw7ZuaWcgPHUu a2xlaW5lLWtvZW5pZ0BwZW5ndXRyb25peC5kZT4KU2lnbmVkLW9mZi1ieTogQ2zDqW1lbnQgUMOp cm9uIDxwZXJvbi5jbGVtQGdtYWlsLmNvbT4KLS0tCiBkcml2ZXJzL3B3bS9wd20tc3VuNGkuYyB8 IDM0ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrLS0KIDEgZmlsZSBjaGFuZ2VkLCAz MiBpbnNlcnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvcHdt L3B3bS1zdW40aS5jIGIvZHJpdmVycy9wd20vcHdtLXN1bjRpLmMKaW5kZXggNTgxZDIzMjg3MzMz Li40ODc4OTlkNGNjM2YgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvcHdtL3B3bS1zdW40aS5jCisrKyBi L2RyaXZlcnMvcHdtL3B3bS1zdW40aS5jCkBAIC0xNiw2ICsxNiw3IEBACiAjaW5jbHVkZSA8bGlu dXgvb2ZfZGV2aWNlLmg+CiAjaW5jbHVkZSA8bGludXgvcGxhdGZvcm1fZGV2aWNlLmg+CiAjaW5j bHVkZSA8bGludXgvcHdtLmg+CisjaW5jbHVkZSA8bGludXgvcmVzZXQuaD4KICNpbmNsdWRlIDxs aW51eC9zbGFiLmg+CiAjaW5jbHVkZSA8bGludXgvc3BpbmxvY2suaD4KICNpbmNsdWRlIDxsaW51 eC90aW1lLmg+CkBAIC03OCw2ICs3OSw3IEBAIHN0cnVjdCBzdW40aV9wd21fZGF0YSB7CiBzdHJ1 Y3Qgc3VuNGlfcHdtX2NoaXAgewogCXN0cnVjdCBwd21fY2hpcCBjaGlwOwogCXN0cnVjdCBjbGsg KmNsazsKKwlzdHJ1Y3QgcmVzZXRfY29udHJvbCAqcnN0OwogCXZvaWQgX19pb21lbSAqYmFzZTsK IAlzcGlubG9ja190IGN0cmxfbG9jazsKIAljb25zdCBzdHJ1Y3Qgc3VuNGlfcHdtX2RhdGEgKmRh dGE7CkBAIC0zNjQsNiArMzY2LDIyIEBAIHN0YXRpYyBpbnQgc3VuNGlfcHdtX3Byb2JlKHN0cnVj dCBwbGF0Zm9ybV9kZXZpY2UgKnBkZXYpCiAJaWYgKElTX0VSUihwd20tPmNsaykpCiAJCXJldHVy biBQVFJfRVJSKHB3bS0+Y2xrKTsKIAorCXB3bS0+cnN0ID0gZGV2bV9yZXNldF9jb250cm9sX2dl dF9vcHRpb25hbF9zaGFyZWQoJnBkZXYtPmRldiwgTlVMTCk7CisJaWYgKElTX0VSUihwd20tPnJz dCkpIHsKKwkJaWYgKFBUUl9FUlIocHdtLT5yc3QpICE9IC1FUFJPQkVfREVGRVIpCisJCQlkZXZf ZXJyKCZwZGV2LT5kZXYsICJnZXQgcmVzZXQgZmFpbGVkICVwZVxuIiwKKwkJCQlwd20tPnJzdCk7 CisJCXJldHVybiBQVFJfRVJSKHB3bS0+cnN0KTsKKwl9CisKKwkvKiBEZWFzc2VydCByZXNldCAq LworCXJldCA9IHJlc2V0X2NvbnRyb2xfZGVhc3NlcnQocHdtLT5yc3QpOworCWlmIChyZXQpIHsK KwkJZGV2X2VycigmcGRldi0+ZGV2LCAiY2Fubm90IGRlYXNzZXJ0IHJlc2V0IGNvbnRyb2w6ICVw ZVxuIiwKKwkJCUVSUl9QVFIocmV0KSk7CisJCXJldHVybiByZXQ7CisJfQorCiAJcHdtLT5jaGlw LmRldiA9ICZwZGV2LT5kZXY7CiAJcHdtLT5jaGlwLm9wcyA9ICZzdW40aV9wd21fb3BzOwogCXB3 bS0+Y2hpcC5iYXNlID0gLTE7CkBAIC0zNzYsMTkgKzM5NCwzMSBAQCBzdGF0aWMgaW50IHN1bjRp X3B3bV9wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQogCXJldCA9IHB3bWNoaXBf YWRkKCZwd20tPmNoaXApOwogCWlmIChyZXQgPCAwKSB7CiAJCWRldl9lcnIoJnBkZXYtPmRldiwg ImZhaWxlZCB0byBhZGQgUFdNIGNoaXA6ICVkXG4iLCByZXQpOwotCQlyZXR1cm4gcmV0OworCQln b3RvIGVycl9wd21fYWRkOwogCX0KIAogCXBsYXRmb3JtX3NldF9kcnZkYXRhKHBkZXYsIHB3bSk7 CiAKIAlyZXR1cm4gMDsKKworZXJyX3B3bV9hZGQ6CisJcmVzZXRfY29udHJvbF9hc3NlcnQocHdt LT5yc3QpOworCisJcmV0dXJuIHJldDsKIH0KIAogc3RhdGljIGludCBzdW40aV9wd21fcmVtb3Zl KHN0cnVjdCBwbGF0Zm9ybV9kZXZpY2UgKnBkZXYpCiB7CiAJc3RydWN0IHN1bjRpX3B3bV9jaGlw ICpwd20gPSBwbGF0Zm9ybV9nZXRfZHJ2ZGF0YShwZGV2KTsKKwlpbnQgcmV0OworCisJcmV0ID0g cHdtY2hpcF9yZW1vdmUoJnB3bS0+Y2hpcCk7CisJaWYgKHJldCkKKwkJcmV0dXJuIHJldDsKKwor CXJlc2V0X2NvbnRyb2xfYXNzZXJ0KHB3bS0+cnN0KTsKIAotCXJldHVybiBwd21jaGlwX3JlbW92 ZSgmcHdtLT5jaGlwKTsKKwlyZXR1cm4gMDsKIH0KIAogc3RhdGljIHN0cnVjdCBwbGF0Zm9ybV9k cml2ZXIgc3VuNGlfcHdtX2RyaXZlciA9IHsKLS0gCjIuMjAuMQoKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBs aXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5m cmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK