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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B386C77B7F for ; Mon, 8 May 2023 11:33:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235961AbjEHLdQ (ORCPT ); Mon, 8 May 2023 07:33:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51278 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235964AbjEHLc7 (ORCPT ); Mon, 8 May 2023 07:32:59 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4F383DC97 for ; Mon, 8 May 2023 04:32:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E32936304A for ; Mon, 8 May 2023 11:31:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00AAFC433EF; Mon, 8 May 2023 11:31:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683545519; bh=088rvVM9AtJmY7X9z4w+ylwDXfpyP6nQeWbozy4Nn6c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vLoZrDDUIWYuc1gWTaF0fLJqEN577Q4K8Xdz7AIqTricjMb218OlhVRKq14n8gMDO HQIPtrNbb9CBzjk6Zksk9iBVlDfe/WUO7c+kameBOyXD3YMC4dlENd5BqMt+woCBLa v5X1K6Gs/H1YBT08DroyzaiJjulW9dD1rA8eSsOU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Krzysztof Kozlowski , Konrad Dybcio , Linus Walleij Subject: [PATCH 5.15 037/371] pinctrl: qcom: lpass-lpi: set output value before enabling output Date: Mon, 8 May 2023 11:43:58 +0200 Message-Id: <20230508094813.549721884@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094811.912279944@linuxfoundation.org> References: <20230508094811.912279944@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Krzysztof Kozlowski commit 163bfb0cb1f6fbf961cf912cbde57399ea1ae0e8 upstream. As per Hardware Programming Guide, when configuring pin as output, set the pin value before setting output-enable (OE). Similar approach is in main SoC TLMM pin controller. Cc: Fixes: 6e261d1090d6 ("pinctrl: qcom: Add sm8250 lpass lpi pinctrl driver") Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20230309154949.658380-1-krzysztof.kozlowski@linaro.org Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman --- drivers/pinctrl/qcom/pinctrl-lpass-lpi.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) --- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c +++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c @@ -452,6 +452,15 @@ static int lpi_config_set(struct pinctrl } } + /* + * As per Hardware Programming Guide, when configuring pin as output, + * set the pin value before setting output-enable (OE). + */ + if (output_enabled) { + val = u32_encode_bits(value ? 1 : 0, LPI_GPIO_VALUE_OUT_MASK); + lpi_gpio_write(pctrl, group, LPI_GPIO_VALUE_REG, val); + } + val = lpi_gpio_read(pctrl, group, LPI_GPIO_CFG_REG); u32p_replace_bits(&val, pullup, LPI_GPIO_PULL_MASK); @@ -461,11 +470,6 @@ static int lpi_config_set(struct pinctrl lpi_gpio_write(pctrl, group, LPI_GPIO_CFG_REG, val); - if (output_enabled) { - val = u32_encode_bits(value ? 1 : 0, LPI_GPIO_VALUE_OUT_MASK); - lpi_gpio_write(pctrl, group, LPI_GPIO_VALUE_REG, val); - } - return 0; }