From patchwork Mon Dec 2 11:00:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 13890271 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id AAE43D78306 for ; Mon, 2 Dec 2024 11:05:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=CrZfKQeVzPeaNb9MAoWKYkGY3YjePUtQn3/HLjKeboI=; b=Mup8sMDA7AQWjNYreIqFDirlQa QL+qYrEWzIIPk7L1XVOu5txhujo4LiTi7o/ly31kzCzvtN6I4ZGaN5uUmuT0Dc7RpUusOmTvOm5C/ vxrXEoB/hYwgl1tysOnh0GwWaZbpo1pimbV8IGWdB8DJBD1D8hl/XfmhpSX1Wd6KaKoz12/Fs5FRJ 2Ljb0eCOJ5MaEkRC58nP1ynkuRq8ie1tnMeR9mKCafH3MXhxSbi/vv7lS1HiHpMDve6KfD7LOMvSJ 4MfRNnXA+toEh1j44de5atqHG8gYmXjQGiSyPGsGzON69939hbp5531DUoljQa2KD9daH6o4kCD74 8B0J0iQg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tI4Ei-00000005nwl-0AgP; Mon, 02 Dec 2024 11:05:04 +0000 Received: from mxout2.routing.net ([2a03:2900:1:a::b]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tI4Ap-00000005nII-15PL; Mon, 02 Dec 2024 11:01:09 +0000 Received: from mxbox2.masterlogin.de (unknown [192.168.10.89]) by mxout2.routing.net (Postfix) with ESMTP id 495505FCA8; Mon, 2 Dec 2024 11:00:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailerdienst.de; s=20200217; t=1733137258; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CrZfKQeVzPeaNb9MAoWKYkGY3YjePUtQn3/HLjKeboI=; b=dH1QId37nZPxSlNP3XQoaXZnT3i/for4Ta+v6QWC6PQ2Uk0CmKIGLstuYTHK2M39mQZ0aK pG2RFgQO9rusAU9PC1dj+8FQxse07nroa6ELRJok7yGNW+48rIGBDjAUAKS5FKrMrm5TaH paMvKSmZMZblIrV7FSozQ5bMGtGl6/k= Received: from frank-u24.. (fttx-pool-217.61.149.104.bambit.de [217.61.149.104]) by mxbox2.masterlogin.de (Postfix) with ESMTPSA id 6BE07100475; Mon, 2 Dec 2024 11:00:57 +0000 (UTC) From: Frank Wunderlich To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Sean Wang Cc: Frank Wunderlich , linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Daniel Golle Subject: [PATCH v5 1/5] pinctrl: mediatek: add support for MTK_PULL_PD_TYPE Date: Mon, 2 Dec 2024 12:00:35 +0100 Message-ID: <20241202110045.22084-2-linux@fw-web.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241202110045.22084-1-linux@fw-web.de> References: <20241202110045.22084-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: fcedbf82-7749-4dbe-b55e-fa060d388412 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241202_030103_581693_C9BA7A2B X-CRM114-Status: GOOD ( 18.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Daniel Golle The MediaTek MT7988 SoC got some pins which only got configurable pull-down but unlike previous designs there is no pull-up option. Add new type MTK_PULL_PD_TYPE to support configuring such pins. Signed-off-by: Daniel Golle Signed-off-by: Frank Wunderlich Reviewed-by: AngeloGioacchino Del Regno --- v5: - add changes suggested by angelo (pd_only), long version, tested with emmc --- .../pinctrl/mediatek/pinctrl-mtk-common-v2.c | 73 ++++++++++++++++--- .../pinctrl/mediatek/pinctrl-mtk-common-v2.h | 1 + 2 files changed, 63 insertions(+), 11 deletions(-) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c index 54301fbba524..7b704cc55c9f 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c @@ -573,7 +573,7 @@ EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_rev1); */ static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, - u32 pullup, u32 arg) + u32 pullup, u32 arg, bool pd_only) { int err, pu, pd; @@ -587,18 +587,34 @@ static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw, pu = 0; pd = 1; } else { - err = -EINVAL; - goto out; + return -EINVAL; } - err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu); - if (err) - goto out; + if (!pd_only) { + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu); + if (err) + return err; + } - err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); + return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); +} + +static int mtk_pinconf_bias_set_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err, pd; + + if (arg != MTK_DISABLE && arg != MTK_ENABLE) + return -EINVAL; + + if (arg == MTK_DISABLE || pullup) + pd = 0; + else if (!pullup) + pd = 1; + + return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); -out: - return err; } static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw, @@ -737,7 +753,7 @@ static int mtk_pinconf_bias_set_pu_pd_rsel(struct mtk_pinctrl *hw, return err; } - return mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, enable); + return mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, enable, false); } int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, @@ -758,8 +774,14 @@ int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, return 0; } + if (try_all_type & MTK_PULL_PD_TYPE) { + err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg, true); + if (!err) + return err; + } + if (try_all_type & MTK_PULL_PU_PD_TYPE) { - err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg); + err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg, false); if (!err) return 0; } @@ -878,6 +900,29 @@ static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw, return err; } +static int mtk_pinconf_bias_get_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err, pd; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd); + if (err) + goto out; + + if (pd == 0) { + *pullup = 0; + *enable = MTK_DISABLE; + } else if (pd == 1) { + *pullup = 0; + *enable = MTK_ENABLE; + } else + err = -EINVAL; + +out: + return err; +} + static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 *pullup, u32 *enable) @@ -947,6 +992,12 @@ int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, return 0; } + if (try_all_type & MTK_PULL_PD_TYPE) { + err = mtk_pinconf_bias_get_pd(hw, desc, pullup, enable); + if (!err) + return err; + } + if (try_all_type & MTK_PULL_PU_PD_TYPE) { err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable); if (!err) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h index 23688ca6d04e..9c271dc2b521 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h @@ -24,6 +24,7 @@ * turned on/off itself. But it can't be selected pull up/down */ #define MTK_PULL_RSEL_TYPE BIT(3) +#define MTK_PULL_PD_TYPE BIT(4) /* MTK_PULL_PU_PD_RSEL_TYPE is a type which is controlled by * MTK_PULL_PU_PD_TYPE and MTK_PULL_RSEL_TYPE. */