From patchwork Fri Oct 14 17:54:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Torokhov X-Patchwork-Id: 615328 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 4DCA8C433FE for ; Fri, 14 Oct 2022 17:54:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230047AbiJNRym (ORCPT ); Fri, 14 Oct 2022 13:54:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230076AbiJNRyl (ORCPT ); Fri, 14 Oct 2022 13:54:41 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D917BF75; Fri, 14 Oct 2022 10:54:40 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id q10-20020a17090a304a00b0020b1d5f6975so5446534pjl.0; Fri, 14 Oct 2022 10:54:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Wmd4wvJqpqY60zoqrpnViqbsnHydL7TwQT2l6YcLmqI=; b=iB41m4KyiYjsuc0dggnZ35JbaHLv98PAwYo8Dm1EjKVq8/SmkHlFEq5GwQxCep3pyP /4w9dg8LhXRLtkK/0zUurv/wXpJ3m4Rl9xWVRpFHMnuQlrTzJKSa2GMOXDUKn0VJlqwZ SzEh3cAK2YSOQ60lUJ76mDVN99dTaYgD0YGfMuUS2/T3IMGByqtsM6gCKSuSjoXqKuye gzT18bhQSFBO6cOTYzBgCPyoi9oldutWo/xoD2XCrUXFKL0iYocMSLU1BKJfeHZAosPq Pg4HxTHPciq3P4bg2XUSoSxupEGZ7JvCr+mamCNfPPN7BvPLvhk4unO8uRKSL9n6iI4W ZhfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Wmd4wvJqpqY60zoqrpnViqbsnHydL7TwQT2l6YcLmqI=; b=pnkoXOgv/We8+nK7dWCayA+ongCjIX/WmFkBAnI+66PrTI92mHGJPQQ3GyBCN2eO6m vBi1IcKd+iHoGgnm/bvHdqYphOTMljb0v3Rk/gwL1vDpah2vnir5sa8yW1nkn74+jUyn nseqFF7LTVf9Uk6rdgub90jSOah5iIHjdWT+lF/Vrsi8VhhmFmpf+Ijx+TZrJmJ3vV8s UsbBZCz+URyyrSvGqFDQge0x4qaN6UfA/4a+p6hD1EiH9yHvG8nT30aQV/KhwBRs1M3K KkmOJu64qVhWn+ornWS8U34i1PWaCWa5ohNfvA16azhgSJ813CIkG+zIWgpqm+p2fR/U cWig== X-Gm-Message-State: ACrzQf2G5oRgwOQ4ZtKkA0iXwb4WkNf46pyUowq/oawpCusq7xbpZa/i vFpo2zzJmRRN4d/dcRMxeFs= X-Google-Smtp-Source: AMsMyM7+cfeaKStMmEYIJgtZWE7XxOm7MMWidoPBdz07y9AY5W+pmzz3i8S+tPtip9lhdmoNqWvQRQ== X-Received: by 2002:a17:90b:180f:b0:20d:4e7f:5f52 with SMTP id lw15-20020a17090b180f00b0020d4e7f5f52mr18916920pjb.119.1665770079544; Fri, 14 Oct 2022 10:54:39 -0700 (PDT) Received: from dtor-ws.mtv.corp.google.com ([2620:15c:9d:2:da06:5604:594f:f6af]) by smtp.gmail.com with ESMTPSA id jj19-20020a170903049300b0017f7819732dsm2011780plb.77.2022.10.14.10.54.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Oct 2022 10:54:38 -0700 (PDT) From: Dmitry Torokhov To: Bartosz Golaszewski , Linus Walleij Cc: linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Alexander Stein , linux-kernel@vger.kernel.org, Daniel Thompson , Andy Shevchenko , linux-gpio@vger.kernel.org Subject: [PATCH v2 1/9] gpiolib: of: add a quirk for legacy names in Mediatek mt2701-cs42448 Date: Fri, 14 Oct 2022 10:54:25 -0700 Message-Id: <20221011-gpiolib-quirks-v2-1-73cb7176fd94@gmail.com> X-Mailer: git-send-email 2.38.0.413.g74048e4d9e-goog In-Reply-To: <20221011-gpiolib-quirks-v2-0-73cb7176fd94@gmail.com> References: <20221011-gpiolib-quirks-v2-0-73cb7176fd94@gmail.com> MIME-Version: 1.0 X-Mailer: b4 0.11.0-dev-5166b Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The driver is using non-standard "i2s1-in-sel-gpio1" and "i2s1-in-sel-gpio2" names to describe its gpios. In preparation to converting to the standard naming (i2s1-in-sel-gpios) and switching the driver to gpiod API add a quirk to gpiolib to keep compatibility with existing DTSes. Reviewed-by: Daniel Thompson Signed-off-by: Dmitry Torokhov --- drivers/gpio/gpiolib-of.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 0e4e1291604d..cef4f6634125 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -488,6 +488,38 @@ static struct gpio_desc *of_find_usb_gpio(struct device_node *np, return of_get_named_gpiod_flags(np, con_id, idx, of_flags); } +static struct gpio_desc *of_find_mt2701_gpio(struct device_node *np, + const char *con_id, + unsigned int idx, + enum of_gpio_flags *of_flags) +{ + struct gpio_desc *desc; + const char *legacy_id; + + if (!IS_ENABLED(CONFIG_SND_SOC_MT2701_CS42448)) + return ERR_PTR(-ENOENT); + + if (!of_device_is_compatible(np, "mediatek,mt2701-cs42448-machine")) + return ERR_PTR(-ENOENT); + + if (!con_id || strcmp(con_id, "i2s1-in-sel")) + return ERR_PTR(-ENOENT); + + if (idx == 0) + legacy_id = "i2s1-in-sel-gpio1"; + else if (idx == 1) + legacy_id = "i2s1-in-sel-gpio2"; + else + return ERR_PTR(-ENOENT); + + desc = of_get_named_gpiod_flags(np, legacy_id, 0, of_flags); + if (!gpiod_not_found(desc)) + pr_info("%s is using legacy gpio name '%s' instead of '%s-gpios'\n", + of_node_full_name(np), legacy_id, con_id); + + return desc; +} + typedef struct gpio_desc *(*of_find_gpio_quirk)(struct device_node *np, const char *con_id, unsigned int idx, @@ -498,6 +530,7 @@ static const of_find_gpio_quirk of_find_gpio_quirks[] = { of_find_regulator_gpio, of_find_arizona_gpio, of_find_usb_gpio, + of_find_mt2701_gpio, NULL };