From patchwork Tue Sep 8 12:58:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 11764299 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CED1D746 for ; Tue, 8 Sep 2020 20:06:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADDBD207DE for ; Tue, 8 Sep 2020 20:06:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="yJoNljIa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730211AbgIHUGh (ORCPT ); Tue, 8 Sep 2020 16:06:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730348AbgIHPVk (ORCPT ); Tue, 8 Sep 2020 11:21:40 -0400 Received: from mail-wm1-x344.google.com (mail-wm1-x344.google.com [IPv6:2a00:1450:4864:20::344]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCDBFC0612F5 for ; Tue, 8 Sep 2020 05:58:27 -0700 (PDT) Received: by mail-wm1-x344.google.com with SMTP id e17so17212581wme.0 for ; Tue, 08 Sep 2020 05:58:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nLn7MBojIPZBX1Cc0fte6bJy2zYPGF+0OvSOSKZTZQk=; b=yJoNljIa9qlqXWuxKL1etUoPBbX1rvf2LnGB7dKBJ9r9JaiDrabh6nGL1BJ3LsQvqH 30ELXTFAi7IW9qjR3oYAyzwHxFMURLTJuY/bsyInF9Ja3sIV9hQ98k2ul+IyUVYV9AcB hriqDEUIZxfsCVQXzh8HYZENCU+u3nykO1L232HxS6MQVmeG4jnL6BsnJNuW95FEI9+W VnNzWEwTQSp82wWUt+DvVzP0H9mCix905ZS7D4JffHFa0McetsJrX2l4WnM5ty4GFFgR tzhL8qo+FMnFFqBOCK8nJieJK7CyM2FzaO96jnHFpKPdNS28pxgac4yq8+FlXv4mY9lG NvVw== 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=nLn7MBojIPZBX1Cc0fte6bJy2zYPGF+0OvSOSKZTZQk=; b=sAW9/xGXGQMwwtpiew5cb8xuQkJGtbXhNYMUp407rh2TIDBHOLnKuFeClALgcJEfTY dR+5ExQgvPTTvRLHVwYLkDTfMCfPq7ZmXuR4PhT17wluIwpQ1am9Fx9D+CmFV5Ee396/ rknnTDXsytUAhqCem9/U+K/mUeFo5NIS4O3upgV9fW+hQPT3hw3abN1fruWcQjIwbEgq Gm4n/clUN2+ZBi7g0gOYDOxinc5v5Gy9ethRWq2NDUdULJJ9H/6W8AXkzX+vfiGgrLex aksiV9OJiITqrA8jXU98NlkCdtHYAbVAYfxDVLJGgeZxYHFDsJgiudT+uVhPWxLvObnh V28w== X-Gm-Message-State: AOAM531hGolWuJ9WbAO4iqCTwV7TFWE8dTPIlw9sRiqfMZJ/BCldggBm 8WalYEvc1mLDcaV6lGt4DvdFRg== X-Google-Smtp-Source: ABdhPJw2UX4DwJ8uomQdKlEKGp4dWXgNPdYavMGcv8xNO/e3jRahH6Mfzl+E80OqSzYNL6Ct55Zkqw== X-Received: by 2002:a1c:7d0c:: with SMTP id y12mr4360474wmc.103.1599569906573; Tue, 08 Sep 2020 05:58:26 -0700 (PDT) Received: from debian-brgl.home (lfbn-nic-1-68-20.w2-15.abo.wanadoo.fr. [2.15.159.20]) by smtp.gmail.com with ESMTPSA id y207sm34817875wmc.17.2020.09.08.05.58.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2020 05:58:26 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Mika Westerberg , Andy Shevchenko , Kent Gibson , Greg Kroah-Hartman Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH 1/3] device: property: add helpers to count items in string arrays Date: Tue, 8 Sep 2020 14:58:11 +0200 Message-Id: <20200908125813.8809-2-brgl@bgdev.pl> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200908125813.8809-1-brgl@bgdev.pl> References: <20200908125813.8809-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Bartosz Golaszewski Instead of doing the following: count = device_property_read_string_array(dev, propname, NULL, 0); Let's provide inline helpers with hardcoded arguments for counting strings in property arrays. Suggested-by: Andy Shevchenko Signed-off-by: Bartosz Golaszewski --- include/linux/property.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/linux/property.h b/include/linux/property.h index 9f805c442819..1fa5e250a8ea 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -170,6 +170,12 @@ static inline int device_property_count_u64(struct device *dev, const char *prop return device_property_read_u64_array(dev, propname, NULL, 0); } +static inline int device_property_count_strings(struct device *dev, + const char *propname) +{ + return device_property_read_string_array(dev, propname, NULL, 0); +} + static inline bool fwnode_property_read_bool(const struct fwnode_handle *fwnode, const char *propname) { @@ -224,6 +230,13 @@ static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode, return fwnode_property_read_u64_array(fwnode, propname, NULL, 0); } +static inline int +fwnode_property_count_strings(const struct fwnode_handle *fwnode, + const char *propname) +{ + return fwnode_property_read_string_array(fwnode, propname, NULL, 0); +} + struct software_node; /** From patchwork Tue Sep 8 12:58:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 11763587 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9A7AE1599 for ; Tue, 8 Sep 2020 16:36:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73BD7206E7 for ; Tue, 8 Sep 2020 16:36:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="h24MOzIw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731789AbgIHQfx (ORCPT ); Tue, 8 Sep 2020 12:35:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732006AbgIHQcQ (ORCPT ); Tue, 8 Sep 2020 12:32:16 -0400 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EE60C0612FA for ; Tue, 8 Sep 2020 05:58:29 -0700 (PDT) Received: by mail-wr1-x444.google.com with SMTP id t10so19057814wrv.1 for ; Tue, 08 Sep 2020 05:58:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ikPWUVajWpPhi7pSm8HDj7BsQ12e/VRbizs3Bl5cmps=; b=h24MOzIws0owVLCP26G8p4TfyQNkcA9CMUdzjx/1FD/NuKFbPRZAdjmyVpOGHeC52G l4287SGB/RoIq/KGngRwJ2c5tvGgq18w5bwZpE5TC8PMPvIOrpWvPLAXOK7pmpuEMMwm 2sEFg7DcTLrf2TqbHdyDw/kPRqYVYywzWS3ixv9mKN+qWVNavk4UA8J0coLwWfngQFZS 1c5w/U6CHN+IcIaNaPBgN54KggRnflv8e7lAePrD1QKI+i93TOHLmv6oIhp63/YqPmsZ m4Qx8OHyMCzzHHgDB/JyeGBU2OAFmeFzE9XPGwgIzAkH7G6+ISJQQlPX+qrOHzKDi/Z5 LgkA== 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=ikPWUVajWpPhi7pSm8HDj7BsQ12e/VRbizs3Bl5cmps=; b=P9FH6J3x3p26E5rOEvYXGlxT6akZMYmqzEt/rah4BNBAv1HlIeBw2nJUb5hi+3U/S/ 75zgNyMMKrljJx7NO5tt78uDA1IQ5skG3S+BaRRvlRXxYJiSHaY7lQvtaKsATDpYWB/c 3qL48WlfM0VEa/pivHZul6HXwKHViiLwW+WUdzo9XBuzPjoRnk4e/o8CVtZBaYJrxwHO FET+YpHEohdznb0c+1jGfZzzzPyZkCKMzM3j39oXOiYG1jPNcHdrBRZs8rdum2T44W7G zPbdwmfq2zErgjbaesspPb3pdaGTrv5ELt88E39YXC+91BOIRDZ5VNHEV050OY9/d82h 34Kg== X-Gm-Message-State: AOAM531lA8rJ6jzc9JbaVSYfHMGaxQxdeDEBya0wFlIOvYk2S1D/COJQ nMb1r8c60Hjt1v63rPXvYD0iQQ== X-Google-Smtp-Source: ABdhPJwHjgDUtqRBB/g2d8wiJyug79CxIptyIXQB/lJ1EwW+nOgQ4NMwQLw+Ld4+xyg8DQrXp4w50w== X-Received: by 2002:adf:b306:: with SMTP id j6mr25583555wrd.279.1599569908453; Tue, 08 Sep 2020 05:58:28 -0700 (PDT) Received: from debian-brgl.home (lfbn-nic-1-68-20.w2-15.abo.wanadoo.fr. [2.15.159.20]) by smtp.gmail.com with ESMTPSA id y207sm34817875wmc.17.2020.09.08.05.58.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2020 05:58:27 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Mika Westerberg , Andy Shevchenko , Kent Gibson , Greg Kroah-Hartman Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH 2/3] gpiolib: generalize devprop_gpiochip_set_names() for device properties Date: Tue, 8 Sep 2020 14:58:12 +0200 Message-Id: <20200908125813.8809-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200908125813.8809-1-brgl@bgdev.pl> References: <20200908125813.8809-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Bartosz Golaszewski devprop_gpiochip_set_names() is overly complicated with taking the fwnode argument (which requires using dev_fwnode() & of_fwnode_handle() in ACPI and OF GPIO code respectively). Let's just switch to using the generic device properties. This allows us to pull the code setting line names directly into gpiochip_add_data_with_key() instead of handling it separately for ACPI and OF. Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpiolib-acpi.c | 3 --- drivers/gpio/gpiolib-devprop.c | 20 ++++++++++---------- drivers/gpio/gpiolib-of.c | 5 ----- drivers/gpio/gpiolib.c | 8 ++++---- include/linux/gpio/driver.h | 3 +-- 5 files changed, 15 insertions(+), 24 deletions(-) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 54ca3c18b291..834a12f3219e 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -1221,9 +1221,6 @@ void acpi_gpiochip_add(struct gpio_chip *chip) return; } - if (!chip->names) - devprop_gpiochip_set_names(chip, dev_fwnode(chip->parent)); - acpi_gpiochip_request_regions(acpi_gpio); acpi_gpiochip_scan_gpios(acpi_gpio); acpi_walk_dep_device_list(handle); diff --git a/drivers/gpio/gpiolib-devprop.c b/drivers/gpio/gpiolib-devprop.c index 26741032fa9e..29ee00d7730e 100644 --- a/drivers/gpio/gpiolib-devprop.c +++ b/drivers/gpio/gpiolib-devprop.c @@ -17,25 +17,23 @@ /** * devprop_gpiochip_set_names - Set GPIO line names using device properties * @chip: GPIO chip whose lines should be named, if possible - * @fwnode: Property Node containing the gpio-line-names property * * Looks for device property "gpio-line-names" and if it exists assigns * GPIO line names for the chip. The memory allocated for the assigned - * names belong to the underlying firmware node and should not be released + * names belong to the underlying software node and should not be released * by the caller. */ -void devprop_gpiochip_set_names(struct gpio_chip *chip, - const struct fwnode_handle *fwnode) +int devprop_gpiochip_set_names(struct gpio_chip *chip) { struct gpio_device *gdev = chip->gpiodev; + struct device *dev = chip->parent; const char **names; int ret, i; int count; - count = fwnode_property_read_string_array(fwnode, "gpio-line-names", - NULL, 0); + count = device_property_count_strings(dev, "gpio-line-names"); if (count < 0) - return; + return 0; if (count > gdev->ngpio) { dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d", @@ -45,19 +43,21 @@ void devprop_gpiochip_set_names(struct gpio_chip *chip, names = kcalloc(count, sizeof(*names), GFP_KERNEL); if (!names) - return; + return -ENOMEM; - ret = fwnode_property_read_string_array(fwnode, "gpio-line-names", + ret = device_property_read_string_array(dev, "gpio-line-names", names, count); if (ret < 0) { dev_warn(&gdev->dev, "failed to read GPIO line names\n"); kfree(names); - return; + return ret; } for (i = 0; i < count; i++) gdev->descs[i].name = names[i]; kfree(names); + + return 0; } EXPORT_SYMBOL_GPL(devprop_gpiochip_set_names); diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index bd31dd3b6a75..2f895a2b8411 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -1026,11 +1026,6 @@ int of_gpiochip_add(struct gpio_chip *chip) if (ret) return ret; - /* If the chip defines names itself, these take precedence */ - if (!chip->names) - devprop_gpiochip_set_names(chip, - of_fwnode_handle(chip->of_node)); - of_node_get(chip->of_node); ret = of_gpiochip_scan_gpios(chip); diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 80137c1b3cdc..0d390f0ec32c 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -340,9 +340,6 @@ static int gpiochip_set_desc_names(struct gpio_chip *gc) struct gpio_device *gdev = gc->gpiodev; int i; - if (!gc->names) - return 0; - /* First check all names if they are unique */ for (i = 0; i != gc->ngpio; ++i) { struct gpio_desc *gpio; @@ -621,7 +618,10 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, INIT_LIST_HEAD(&gdev->pin_ranges); #endif - ret = gpiochip_set_desc_names(gc); + if (gc->names) + ret = gpiochip_set_desc_names(gc); + else + ret = devprop_gpiochip_set_names(gc); if (ret) goto err_remove_from_list; diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index d1cef5c2715c..56485a040b82 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -756,8 +756,7 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc, enum gpiod_flags dflags); void gpiochip_free_own_desc(struct gpio_desc *desc); -void devprop_gpiochip_set_names(struct gpio_chip *gc, - const struct fwnode_handle *fwnode); +int devprop_gpiochip_set_names(struct gpio_chip *gc); #ifdef CONFIG_GPIOLIB From patchwork Tue Sep 8 12:58:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 11764297 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A1F14159A for ; Tue, 8 Sep 2020 20:06:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8433D2137B for ; Tue, 8 Sep 2020 20:06:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="0Mh/WjQW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729912AbgIHUGO (ORCPT ); Tue, 8 Sep 2020 16:06:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730353AbgIHPVk (ORCPT ); Tue, 8 Sep 2020 11:21:40 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3AD03C0612FC for ; Tue, 8 Sep 2020 05:58:31 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id j2so19007761wrx.7 for ; Tue, 08 Sep 2020 05:58:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rWwIjxnFTzbkw/BaFxCLOnaCoWy8p8lKDcXzU2XY9Ow=; b=0Mh/WjQW7cqk7vvIT6ANfMSVJkivRyR0vHLEVsdr4dQX1OjZzRdtoApwZqXslIjZiP kSZOOLWhDdsQhdveRqN2HDp+l1m4GDuFBCtEWiCxsbFzs3ur0KxcpCzb6c8q8K1eMfHb WJyVFrutCBoOHu92bew55PlZ7yTm06sJc9i8roPiLYbIczeSsyP/PEr+Os3UB91wFSgs wjmAvSeT25kS/NqvOh0sZOSZWVE/OzMwqKgrcmh6hMvUmzGAnKNCQBUX7BcTkcm5x6pk 5zkAr2JrAuvIFfnGvLpiFHfVMmQL0uNF5z5eds0QYZIkSxxH6ubB3r+8FQmICgldecH7 HbRA== 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=rWwIjxnFTzbkw/BaFxCLOnaCoWy8p8lKDcXzU2XY9Ow=; b=NRL04Rh8/aAp++d3YccAscVuoRfhShOYA264RNFETTcPDXkJY8Oi+3UQY3wFyLBAB+ hvcRxNlv64fY6+G4zUMKj0Lf7veQZqdBbJjN7oV9o7H7MP3F8R7LFWgAWuZbbCIgcDnX EqAHtZb4J54Yo+q6W6NEVDuvcLaIy9yJ8Zu3gz5AFvPYDhs3sDL1k5QmbqqVZI+G3Ki4 uOgRajIhgatapM+Jz11uUBIC+A8dzeCnNnJgvJxFO0VmdTUPLqIHIYmKpM4gEMQW9kFc h9/6Fyt898dEdfas4pKcls6VoYlfVkZo4oycNdesGidqyXoR6BtXmDHTnzTrm8y0FY8D SSqQ== X-Gm-Message-State: AOAM532XV09gSteJUY1tHOpoDP+NjDkTbvCrrFa08QlBlfjW7uc78TuP PQmS2EBYLC0SuZ7ItipzbIiKsQ== X-Google-Smtp-Source: ABdhPJx0tjO6B48c1MN/4xfKk3sKOEne5d+CNPDJ1Yw4DodcBAvPnRi/imY5s2CtNkv8XAEb4aSFng== X-Received: by 2002:adf:84c3:: with SMTP id 61mr26170029wrg.131.1599569909956; Tue, 08 Sep 2020 05:58:29 -0700 (PDT) Received: from debian-brgl.home (lfbn-nic-1-68-20.w2-15.abo.wanadoo.fr. [2.15.159.20]) by smtp.gmail.com with ESMTPSA id y207sm34817875wmc.17.2020.09.08.05.58.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2020 05:58:29 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Mika Westerberg , Andy Shevchenko , Kent Gibson , Greg Kroah-Hartman Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH 3/3] gpiolib: unexport devprop_gpiochip_set_names() Date: Tue, 8 Sep 2020 14:58:13 +0200 Message-Id: <20200908125813.8809-4-brgl@bgdev.pl> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200908125813.8809-1-brgl@bgdev.pl> References: <20200908125813.8809-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Bartosz Golaszewski Now that devprop_gpiochip_set_names() is only used in a single place inside drivers/gpio/gpiolib.c, there's no need anymore for it to be exported or to even live in its own source file. Pull this function into the core source file for gpiolib. Signed-off-by: Bartosz Golaszewski --- drivers/gpio/Makefile | 1 - drivers/gpio/gpiolib.c | 47 +++++++++++++++++++++++++++++++++++++ include/linux/gpio/driver.h | 2 -- 3 files changed, 47 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 4f9abff4f2dc..639275eb4e4d 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -6,7 +6,6 @@ ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG obj-$(CONFIG_GPIOLIB) += gpiolib.o obj-$(CONFIG_GPIOLIB) += gpiolib-devres.o obj-$(CONFIG_GPIOLIB) += gpiolib-legacy.o -obj-$(CONFIG_GPIOLIB) += gpiolib-devprop.o obj-$(CONFIG_GPIOLIB) += gpiolib-cdev.o obj-$(CONFIG_OF_GPIO) += gpiolib-of.o obj-$(CONFIG_GPIO_SYSFS) += gpiolib-sysfs.o diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 0d390f0ec32c..2b2526c5de51 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -358,6 +358,53 @@ static int gpiochip_set_desc_names(struct gpio_chip *gc) return 0; } +/* + * devprop_gpiochip_set_names - Set GPIO line names using device properties + * @chip: GPIO chip whose lines should be named, if possible + * + * Looks for device property "gpio-line-names" and if it exists assigns + * GPIO line names for the chip. The memory allocated for the assigned + * names belong to the underlying software node and should not be released + * by the caller. + */ +static int devprop_gpiochip_set_names(struct gpio_chip *chip) +{ + struct gpio_device *gdev = chip->gpiodev; + struct device *dev = chip->parent; + const char **names; + int ret, i; + int count; + + count = device_property_count_strings(dev, "gpio-line-names"); + if (count < 0) + return 0; + + if (count > gdev->ngpio) { + dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d", + count, gdev->ngpio); + count = gdev->ngpio; + } + + names = kcalloc(count, sizeof(*names), GFP_KERNEL); + if (!names) + return -ENOMEM; + + ret = device_property_read_string_array(dev, "gpio-line-names", + names, count); + if (ret < 0) { + dev_warn(&gdev->dev, "failed to read GPIO line names\n"); + kfree(names); + return ret; + } + + for (i = 0; i < count; i++) + gdev->descs[i].name = names[i]; + + kfree(names); + + return 0; +} + static unsigned long *gpiochip_allocate_mask(struct gpio_chip *gc) { unsigned long *p; diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 56485a040b82..4a7e295c3640 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -756,8 +756,6 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc, enum gpiod_flags dflags); void gpiochip_free_own_desc(struct gpio_desc *desc); -int devprop_gpiochip_set_names(struct gpio_chip *gc); - #ifdef CONFIG_GPIOLIB /* lock/unlock as IRQ */