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: 847119 Received: from mxout2.routing.net (mxout2.routing.net [134.0.28.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 897E21FCFFF; Mon, 2 Dec 2024 11:08:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=134.0.28.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733137703; cv=none; b=nNso6WF5VcV1h5vv/yvXKx2IrWTTNuVGzX1PMKjnRwOCiN51oQCe4ej8VZkCAujwmpm1wml0fI8xyTjwCP8Z7bkmd8tVMdeflLxcKjNXfcD9dHYaiY6qoC+6Cw8aXWs7iyoCgD5MPh+7krbxDTc+9bmym92hIhm4O6HKfG3rKxk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733137703; c=relaxed/simple; bh=re6cKiQn+0ZANLSz6NjNoLOhDvC9IPmP5rXbLjhXoi4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eR9nNys0mGfCCdFotAIs2GqlID3TmsF8cFMtUnz5tZiCbWjA/I33qMbcWhxXsMPo0Q86n278yrT9DVLkpYwyI2ON3qz6VEKV4xy1H79A1/u4jk+3V9zTR1XkVKAj2vzKoAbou/FyfoJTKg+aBytjXWhYv9KBTMCcfjVfDIJl68A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fw-web.de; spf=pass smtp.mailfrom=fw-web.de; dkim=pass (1024-bit key) header.d=mailerdienst.de header.i=@mailerdienst.de header.b=dH1QId37; arc=none smtp.client-ip=134.0.28.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fw-web.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fw-web.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mailerdienst.de header.i=@mailerdienst.de header.b="dH1QId37" 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> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mail-ID: fcedbf82-7749-4dbe-b55e-fa060d388412 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. */