From patchwork Thu Jan 26 13:27:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732260 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=Eb5nAzH5; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2hP322mRz23hj for ; Fri, 27 Jan 2023 00:28:39 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236506AbjAZN2h (ORCPT ); Thu, 26 Jan 2023 08:28:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236115AbjAZN2g (ORCPT ); Thu, 26 Jan 2023 08:28:36 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B9066EB9; Thu, 26 Jan 2023 05:28:14 -0800 (PST) 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 sin.source.kernel.org (Postfix) with ESMTPS id 79ECFCE2416; Thu, 26 Jan 2023 13:28:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CEB13C4339B; Thu, 26 Jan 2023 13:28:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674739690; bh=scLxtXK0CI1WUEUBZxfzYBeAu1lVUR2nZItek9RfGPE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Eb5nAzH5T/TxENY0LOEZpwJKWaFDFs0PZZStspdRhY5tM7MU860AMxFSeMO7uAJUb plFmjeuagYwggzS9dvyqahIvfwFr2ig1Rp0firKWIOMzr8HmO98YhI3pVqYlT9DPEg smoLYJM7tdv9lSK1oYz9F26DL4DpOvRGQbtnDOxFwdjTcu4zE40BKqhWCE8ByS5iF5 EXWzWGV1vPaXGB9RPXEoZ/gu4kkU+WwpF7HfTou6Ee8aDC++AVzfE7zj151Y9771Ud LTqFZRgtkmotXLhht80Mx3SwNOHOXbdoIerXVRI1EAMTbOf6+q/dFE3vukbI9hcVAL 6nmeaYPCYiwwg== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 1/8] gpiolib: remove empty asm/gpio.h files Date: Thu, 26 Jan 2023 14:27:54 +0100 Message-Id: <20230126132801.2042371-2-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann The arm and sh versions of this file are identical to the generic versions and can just be removed. The drivers that actually use the sh3 specific version also include cpu/gpio.h directly, with the exception of magicpanelr2, which is easily fixed. This leaves coldfire as the only gpio driver that needs something custom for gpiolib. Reviewed-by: Geert Uytterhoeven Reviewed-by: Andy Shevchenko Signed-off-by: Arnd Bergmann Acked-by: Bartosz Golaszewski Reviewed-by: Linus Walleij --- arch/arm/Kconfig | 1 - arch/arm/include/asm/gpio.h | 21 -------------- arch/sh/Kconfig | 1 - arch/sh/boards/board-magicpanelr2.c | 1 + arch/sh/include/asm/gpio.h | 45 ----------------------------- 5 files changed, 1 insertion(+), 68 deletions(-) delete mode 100644 arch/arm/include/asm/gpio.h delete mode 100644 arch/sh/include/asm/gpio.h diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5c8bab8d6009..b4447a055029 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -24,7 +24,6 @@ config ARM select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_LDREX select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_KEEP_MEMBLOCK diff --git a/arch/arm/include/asm/gpio.h b/arch/arm/include/asm/gpio.h deleted file mode 100644 index 4ebbb58f06ea..000000000000 --- a/arch/arm/include/asm/gpio.h +++ /dev/null @@ -1,21 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ARCH_ARM_GPIO_H -#define _ARCH_ARM_GPIO_H - -#include - -/* The trivial gpiolib dispatchers */ -#define gpio_get_value __gpio_get_value -#define gpio_set_value __gpio_set_value -#define gpio_cansleep __gpio_cansleep - -/* - * Provide a default gpio_to_irq() which should satisfy every case. - * However, some platforms want to do this differently, so allow them - * to override it. - */ -#ifndef gpio_to_irq -#define gpio_to_irq __gpio_to_irq -#endif - -#endif /* _ARCH_ARM_GPIO_H */ diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 0665ac0add0b..ccb866750a88 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -4,7 +4,6 @@ config SUPERH select ARCH_32BIT_OFF_T select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU - select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) select ARCH_HAS_BINFMT_FLAT if !MMU select ARCH_HAS_CURRENT_STACK_POINTER diff --git a/arch/sh/boards/board-magicpanelr2.c b/arch/sh/boards/board-magicpanelr2.c index c3434f0ffc7d..626c716c086c 100644 --- a/arch/sh/boards/board-magicpanelr2.c +++ b/arch/sh/boards/board-magicpanelr2.c @@ -21,6 +21,7 @@ #include #include #include +#include #include /* Dummy supplies, where voltage doesn't matter */ diff --git a/arch/sh/include/asm/gpio.h b/arch/sh/include/asm/gpio.h deleted file mode 100644 index 588c1380e4cb..000000000000 --- a/arch/sh/include/asm/gpio.h +++ /dev/null @@ -1,45 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 - * - * include/asm-sh/gpio.h - * - * Generic GPIO API and pinmux table support for SuperH. - * - * Copyright (c) 2008 Magnus Damm - */ -#ifndef __ASM_SH_GPIO_H -#define __ASM_SH_GPIO_H - -#include -#include - -#if defined(CONFIG_CPU_SH3) -#include -#endif - -#include - -#ifdef CONFIG_GPIOLIB - -static inline int gpio_get_value(unsigned gpio) -{ - return __gpio_get_value(gpio); -} - -static inline void gpio_set_value(unsigned gpio, int value) -{ - __gpio_set_value(gpio, value); -} - -static inline int gpio_cansleep(unsigned gpio) -{ - return __gpio_cansleep(gpio); -} - -static inline int gpio_to_irq(unsigned gpio) -{ - return __gpio_to_irq(gpio); -} - -#endif /* CONFIG_GPIOLIB */ - -#endif /* __ASM_SH_GPIO_H */ From patchwork Thu Jan 26 13:27:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732261 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=EuFeV5AH; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2hP35Btmz23hk for ; Fri, 27 Jan 2023 00:28:39 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236848AbjAZN2h (ORCPT ); Thu, 26 Jan 2023 08:28:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236668AbjAZN2h (ORCPT ); Thu, 26 Jan 2023 08:28:37 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49CEA7282; Thu, 26 Jan 2023 05:28:16 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id 95FFDB81D98; Thu, 26 Jan 2023 13:28:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41CB0C433D2; Thu, 26 Jan 2023 13:28:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674739693; bh=aS6kylYmn924ux3OlisnQEqp3LCBWw+fYnrGBZdDFrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EuFeV5AHTIK6Z2L9ygsgp22bb1tWwKzkJNvx06VKrQIk02SWdiUIMsyH5HdbIaCjN deNsVlnrd9iw0MuxY9gzFssXEUYyyyIc1ZksZgmHAWEF4Ha4Sn2tMc0FNhgVmvrG6L B2VZ7mKHGl4RZDZ64dkkPHvdu/dGcRtbstfn3cKb0tla0pHA+424f6ZnyGqsjyDZxj 3Oz9cVzBNniGZpGJvXq4D74XItYC8W1Q3F9Hx1KdcPOdlvlM/HMIv0LQTGlVx/A/YU 70d7DfcRrclL09kVkXvFew6LIVSy/sn2koEavdN213NVYB7H+WLQHOksMJRHXo+Kmt 1N0P2+KQm0TJw== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 2/8] gpiolib: coldfire: remove custom asm/gpio.h Date: Thu, 26 Jan 2023 14:27:55 +0100 Message-Id: <20230126132801.2042371-3-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann Now that coldfire is the only user of a custom asm/gpio.h, it seems better to remove this as well, and have the same interface everywhere. For the gpio_get_value()/gpio_set_value()/gpio_to_irq(), gpio_cansleep() functions, the custom version is only a micro-optimization to inline the function for constant GPIO numbers. However, in the coldfire defconfigs, I was unable to find a single instance where this micro-optimization was even used, and according to Geert the only user appears to be the QSPI chip that is disabled everywhere. The custom gpio_request_one() function is even less useful, as it is guarded by an #ifdef that is never true. Reviewed-by: Geert Uytterhoeven Reviewed-by: Andy Shevchenko Signed-off-by: Arnd Bergmann Acked-by: Bartosz Golaszewski Reviewed-by: Linus Walleij --- arch/m68k/Kconfig.cpu | 1 - arch/m68k/include/asm/gpio.h | 95 ------------------------------------ drivers/gpio/Kconfig | 8 --- include/linux/gpio.h | 7 --- 4 files changed, 111 deletions(-) delete mode 100644 arch/m68k/include/asm/gpio.h diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index 9380f6e3bb66..96a0fb4f1af5 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -24,7 +24,6 @@ config M68KCLASSIC config COLDFIRE bool "Coldfire CPU family support" - select ARCH_HAVE_CUSTOM_GPIO_H select CPU_HAS_NO_BITFIELDS select CPU_HAS_NO_CAS select CPU_HAS_NO_MULDIV64 diff --git a/arch/m68k/include/asm/gpio.h b/arch/m68k/include/asm/gpio.h deleted file mode 100644 index 5cfc0996ba94..000000000000 --- a/arch/m68k/include/asm/gpio.h +++ /dev/null @@ -1,95 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Coldfire generic GPIO support - * - * (C) Copyright 2009, Steven King -*/ - -#ifndef coldfire_gpio_h -#define coldfire_gpio_h - -#include -#include -#include -#include -/* - * The Generic GPIO functions - * - * If the gpio is a compile time constant and is one of the Coldfire gpios, - * use the inline version, otherwise dispatch thru gpiolib. - */ - -static inline int gpio_get_value(unsigned gpio) -{ - if (__builtin_constant_p(gpio) && gpio < MCFGPIO_PIN_MAX) - return mcfgpio_read(__mcfgpio_ppdr(gpio)) & mcfgpio_bit(gpio); - else - return __gpio_get_value(gpio); -} - -static inline void gpio_set_value(unsigned gpio, int value) -{ - if (__builtin_constant_p(gpio) && gpio < MCFGPIO_PIN_MAX) { - if (gpio < MCFGPIO_SCR_START) { - unsigned long flags; - MCFGPIO_PORTTYPE data; - - local_irq_save(flags); - data = mcfgpio_read(__mcfgpio_podr(gpio)); - if (value) - data |= mcfgpio_bit(gpio); - else - data &= ~mcfgpio_bit(gpio); - mcfgpio_write(data, __mcfgpio_podr(gpio)); - local_irq_restore(flags); - } else { - if (value) - mcfgpio_write(mcfgpio_bit(gpio), - MCFGPIO_SETR_PORT(gpio)); - else - mcfgpio_write(~mcfgpio_bit(gpio), - MCFGPIO_CLRR_PORT(gpio)); - } - } else - __gpio_set_value(gpio, value); -} - -static inline int gpio_to_irq(unsigned gpio) -{ -#if defined(MCFGPIO_IRQ_MIN) - if ((gpio >= MCFGPIO_IRQ_MIN) && (gpio < MCFGPIO_IRQ_MAX)) -#else - if (gpio < MCFGPIO_IRQ_MAX) -#endif - return gpio + MCFGPIO_IRQ_VECBASE; - else - return __gpio_to_irq(gpio); -} - -static inline int gpio_cansleep(unsigned gpio) -{ - return gpio < MCFGPIO_PIN_MAX ? 0 : __gpio_cansleep(gpio); -} - -#ifndef CONFIG_GPIOLIB -static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) -{ - int err; - - err = gpio_request(gpio, label); - if (err) - return err; - - if (flags & GPIOF_DIR_IN) - err = gpio_direction_input(gpio); - else - err = gpio_direction_output(gpio, - (flags & GPIOF_INIT_HIGH) ? 1 : 0); - - if (err) - gpio_free(gpio); - - return err; -} -#endif /* !CONFIG_GPIOLIB */ -#endif diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 218d7e4c27ff..06a268d56800 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -3,14 +3,6 @@ # GPIO infrastructure and drivers # -config ARCH_HAVE_CUSTOM_GPIO_H - bool - help - Selecting this config option from the architecture Kconfig allows - the architecture to provide a custom asm/gpio.h implementation - overriding the default implementations. New uses of this are - strongly discouraged. - menuconfig GPIOLIB bool "GPIO Support" help diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 85beb236c925..2b75017b3aad 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -54,11 +54,6 @@ struct gpio { }; #ifdef CONFIG_GPIOLIB - -#ifdef CONFIG_ARCH_HAVE_CUSTOM_GPIO_H -#include -#else - #include static inline int gpio_get_value(unsigned int gpio) @@ -81,8 +76,6 @@ static inline int gpio_to_irq(unsigned int gpio) return __gpio_to_irq(gpio); } -#endif /* ! CONFIG_ARCH_HAVE_CUSTOM_GPIO_H */ - /* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */ struct device; From patchwork Thu Jan 26 13:27:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732262 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=sLOZpNMh; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2hP41Rl1z23h0 for ; Fri, 27 Jan 2023 00:28:40 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236852AbjAZN2i (ORCPT ); Thu, 26 Jan 2023 08:28:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236831AbjAZN2h (ORCPT ); Thu, 26 Jan 2023 08:28:37 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D24E76A3; Thu, 26 Jan 2023 05:28:16 -0800 (PST) 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 0A48D617D8; Thu, 26 Jan 2023 13:28:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A90DEC433EF; Thu, 26 Jan 2023 13:28:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674739695; bh=ZiCadwRxGDjctdK2w5nb2qLUa4FE6fc5XUvA/+ZvbAc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sLOZpNMhdzSOOXzyU1I6iNKrvqG0rXYNaxwI+5qXEzjpi7/l1zfulIJOqNvkAljuH HaybAj5oEelroDAebb8wnINJrtXlg5f6xfeDu5qN7I693yWdzo6bRGqJ6XSxY0KjDA k7MpCQtVdXoHP3DGb3Q2SaDp4/0UaSlbdgh8K8SV4g66SBMpatOQdzZMskQvEXcFgz hYL+68RVQwjPMlbxUOHw95WiCQmYtapjOdeePtHaCluDl33vRX0SXlSaq1JO2mW/qC vEO8O2hZM1eE3zrcjY/TBONI1E/L9pTVgCdHcpMQIv9+SGnmzUm7an9clP+gNnIHmk 1+1CaFnduo/Fw== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org Subject: [PATCH 3/8] gpiolib: remove asm-generic/gpio.h Date: Thu, 26 Jan 2023 14:27:56 +0100 Message-Id: <20230126132801.2042371-4-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann The asm-generic/gpio.h file is now always included when using gpiolib, so just move its contents into linux/gpio.h with a few minor simplifications. Signed-off-by: Arnd Bergmann Reviewed-by: Linus Walleij --- MAINTAINERS | 1 - arch/m68k/include/asm/mcfgpio.h | 2 +- drivers/gpio/gpio-davinci.c | 3 +- drivers/pinctrl/core.c | 2 +- include/asm-generic/gpio.h | 147 -------------------------------- include/linux/gpio.h | 93 ++++++++++++++++++-- 6 files changed, 87 insertions(+), 161 deletions(-) delete mode 100644 include/asm-generic/gpio.h diff --git a/MAINTAINERS b/MAINTAINERS index 7d4677efcf02..acda33cbd689 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8729,7 +8729,6 @@ F: Documentation/admin-guide/gpio/ F: Documentation/devicetree/bindings/gpio/ F: Documentation/driver-api/gpio/ F: drivers/gpio/ -F: include/asm-generic/gpio.h F: include/dt-bindings/gpio/ F: include/linux/gpio.h F: include/linux/gpio/ diff --git a/arch/m68k/include/asm/mcfgpio.h b/arch/m68k/include/asm/mcfgpio.h index 27f32cc81da6..2cefe8445980 100644 --- a/arch/m68k/include/asm/mcfgpio.h +++ b/arch/m68k/include/asm/mcfgpio.h @@ -9,7 +9,7 @@ #define mcfgpio_h #ifdef CONFIG_GPIOLIB -#include +#include #else int __mcfgpio_get_value(unsigned gpio); diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c index 26b1f7465e09..411b3102bc47 100644 --- a/drivers/gpio/gpio-davinci.c +++ b/drivers/gpio/gpio-davinci.c @@ -7,6 +7,7 @@ */ #include +#include #include #include #include @@ -24,8 +25,6 @@ #include #include -#include - #define MAX_REGS_BANKS 5 #define MAX_INT_PER_BANK 32 diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index d6e6c751255f..6114affb642b 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -30,7 +30,7 @@ #ifdef CONFIG_GPIOLIB #include "../gpio/gpiolib.h" -#include +#include #endif #include "core.h" diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h deleted file mode 100644 index 22cb8c9efc1d..000000000000 --- a/include/asm-generic/gpio.h +++ /dev/null @@ -1,147 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_GENERIC_GPIO_H -#define _ASM_GENERIC_GPIO_H - -#include -#include - -#ifdef CONFIG_GPIOLIB - -#include -#include -#include - -/* - * Platforms may implement their GPIO interface with library code, - * at a small performance cost for non-inlined operations and some - * extra memory (for code and for per-GPIO table entries). - */ - -/* - * At the end we want all GPIOs to be dynamically allocated from 0. - * However, some legacy drivers still perform fixed allocation. - * Until they are all fixed, leave 0-512 space for them. - */ -#define GPIO_DYNAMIC_BASE 512 - -struct device; -struct gpio; -struct seq_file; -struct module; -struct device_node; -struct gpio_desc; - -/* Always use the library code for GPIO management calls, - * or when sleeping may be involved. - */ -extern int gpio_request(unsigned gpio, const char *label); -extern void gpio_free(unsigned gpio); - -static inline int gpio_direction_input(unsigned gpio) -{ - return gpiod_direction_input(gpio_to_desc(gpio)); -} -static inline int gpio_direction_output(unsigned gpio, int value) -{ - return gpiod_direction_output_raw(gpio_to_desc(gpio), value); -} - -static inline int gpio_set_debounce(unsigned gpio, unsigned debounce) -{ - return gpiod_set_debounce(gpio_to_desc(gpio), debounce); -} - -static inline int gpio_get_value_cansleep(unsigned gpio) -{ - return gpiod_get_raw_value_cansleep(gpio_to_desc(gpio)); -} -static inline void gpio_set_value_cansleep(unsigned gpio, int value) -{ - return gpiod_set_raw_value_cansleep(gpio_to_desc(gpio), value); -} - - -/* A platform's code may want to inline the I/O calls when - * the GPIO is constant and refers to some always-present controller, - * giving direct access to chip registers and tight bitbanging loops. - */ -static inline int __gpio_get_value(unsigned gpio) -{ - return gpiod_get_raw_value(gpio_to_desc(gpio)); -} -static inline void __gpio_set_value(unsigned gpio, int value) -{ - return gpiod_set_raw_value(gpio_to_desc(gpio), value); -} - -static inline int __gpio_cansleep(unsigned gpio) -{ - return gpiod_cansleep(gpio_to_desc(gpio)); -} - -static inline int __gpio_to_irq(unsigned gpio) -{ - return gpiod_to_irq(gpio_to_desc(gpio)); -} - -extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label); -extern int gpio_request_array(const struct gpio *array, size_t num); -extern void gpio_free_array(const struct gpio *array, size_t num); - -/* - * A sysfs interface can be exported by individual drivers if they want, - * but more typically is configured entirely from userspace. - */ -static inline int gpio_export(unsigned gpio, bool direction_may_change) -{ - return gpiod_export(gpio_to_desc(gpio), direction_may_change); -} - -static inline void gpio_unexport(unsigned gpio) -{ - gpiod_unexport(gpio_to_desc(gpio)); -} - -#else /* !CONFIG_GPIOLIB */ - -#include - -/* platforms that don't directly support access to GPIOs through I2C, SPI, - * or other blocking infrastructure can use these wrappers. - */ - -static inline int gpio_cansleep(unsigned gpio) -{ - return 0; -} - -static inline int gpio_get_value_cansleep(unsigned gpio) -{ - might_sleep(); - return __gpio_get_value(gpio); -} - -static inline void gpio_set_value_cansleep(unsigned gpio, int value) -{ - might_sleep(); - __gpio_set_value(gpio, value); -} - -#endif /* !CONFIG_GPIOLIB */ - -/* - * "valid" GPIO numbers are nonnegative and may be passed to - * setup routines like gpio_request(). only some valid numbers - * can successfully be requested and used. - * - * Invalid GPIO numbers are useful for indicating no-such-GPIO in - * platform data and other tables. - */ - -static inline bool gpio_is_valid(int number) -{ - /* only non-negative numbers are valid */ - return number >= 0; -} - -#endif /* _ASM_GENERIC_GPIO_H */ diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 2b75017b3aad..e273a3287d8e 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -54,26 +54,101 @@ struct gpio { }; #ifdef CONFIG_GPIOLIB -#include +#include +#include +#include -static inline int gpio_get_value(unsigned int gpio) +/* + * "valid" GPIO numbers are nonnegative and may be passed to + * setup routines like gpio_request(). only some valid numbers + * can successfully be requested and used. + * + * Invalid GPIO numbers are useful for indicating no-such-GPIO in + * platform data and other tables. + */ +static inline bool gpio_is_valid(int number) +{ + /* only non-negative numbers are valid */ + return number >= 0; +} + +/* + * Platforms may implement their GPIO interface with library code, + * at a small performance cost for non-inlined operations and some + * extra memory (for code and for per-GPIO table entries). + */ + +/* + * At the end we want all GPIOs to be dynamically allocated from 0. + * However, some legacy drivers still perform fixed allocation. + * Until they are all fixed, leave 0-512 space for them. + */ +#define GPIO_DYNAMIC_BASE 512 + +/* Always use the library code for GPIO management calls, + * or when sleeping may be involved. + */ +extern int gpio_request(unsigned gpio, const char *label); +extern void gpio_free(unsigned gpio); + +static inline int gpio_direction_input(unsigned gpio) +{ + return gpiod_direction_input(gpio_to_desc(gpio)); +} +static inline int gpio_direction_output(unsigned gpio, int value) { - return __gpio_get_value(gpio); + return gpiod_direction_output_raw(gpio_to_desc(gpio), value); } -static inline void gpio_set_value(unsigned int gpio, int value) +static inline int gpio_set_debounce(unsigned gpio, unsigned debounce) { - __gpio_set_value(gpio, value); + return gpiod_set_debounce(gpio_to_desc(gpio), debounce); } -static inline int gpio_cansleep(unsigned int gpio) +static inline int gpio_get_value_cansleep(unsigned gpio) +{ + return gpiod_get_raw_value_cansleep(gpio_to_desc(gpio)); +} +static inline void gpio_set_value_cansleep(unsigned gpio, int value) { - return __gpio_cansleep(gpio); + return gpiod_set_raw_value_cansleep(gpio_to_desc(gpio), value); } -static inline int gpio_to_irq(unsigned int gpio) +static inline int gpio_get_value(unsigned gpio) +{ + return gpiod_get_raw_value(gpio_to_desc(gpio)); +} +static inline void gpio_set_value(unsigned gpio, int value) +{ + return gpiod_set_raw_value(gpio_to_desc(gpio), value); +} + +static inline int gpio_cansleep(unsigned gpio) +{ + return gpiod_cansleep(gpio_to_desc(gpio)); +} + +static inline int gpio_to_irq(unsigned gpio) +{ + return gpiod_to_irq(gpio_to_desc(gpio)); +} + +extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label); +extern int gpio_request_array(const struct gpio *array, size_t num); +extern void gpio_free_array(const struct gpio *array, size_t num); + +/* + * A sysfs interface can be exported by individual drivers if they want, + * but more typically is configured entirely from userspace. + */ +static inline int gpio_export(unsigned gpio, bool direction_may_change) +{ + return gpiod_export(gpio_to_desc(gpio), direction_may_change); +} + +static inline void gpio_unexport(unsigned gpio) { - return __gpio_to_irq(gpio); + gpiod_unexport(gpio_to_desc(gpio)); } /* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */ From patchwork Thu Jan 26 13:27:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732263 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=nxb42sJq; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2hP72kGkz23h0 for ; Fri, 27 Jan 2023 00:28:43 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236859AbjAZN2k (ORCPT ); Thu, 26 Jan 2023 08:28:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236877AbjAZN2j (ORCPT ); Thu, 26 Jan 2023 08:28:39 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA19A7EC5; Thu, 26 Jan 2023 05:28:18 -0800 (PST) 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 479AE617DA; Thu, 26 Jan 2023 13:28:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E27FDC4339B; Thu, 26 Jan 2023 13:28:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674739697; bh=yam+jLkV2aIotM+LcFhs3VFxetZhu0iwa3c53kK12Jg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nxb42sJq248/EkqVNmMy+cif6Q4Gc6oIGMFIS55ig/oyRuIPgiKJeKE+pRsud452+ FikPBlZ5y+hbCtO1wdhKst7RZxXqvUqihaxLESc/4WnSzRGZ13U6J2wGZ4a+CZJbbO OdbDoItl0q45ubTUZnjXwWB5q11LAA/f5bl4b8uJH+X+f4AbyI5pjopNgjONF4FUMB dtk5bbeUBzzl+42GvvfCpMTx+nj5aCtYMoW7d2yVOgaxJIOPWFGZpyxmJ2bFbQn+OK q1shCykGkYitaqaqwVVEbBlCy68ZBK5qGDx8hlTBASR9rq4OTA/D76Dj2458aUzOza V/D+h2dvWPplw== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org Subject: [PATCH 4/8] gpiolib: remove gpio_set_debounce Date: Thu, 26 Jan 2023 14:27:57 +0100 Message-Id: <20230126132801.2042371-5-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann gpio_set_debounce() only has a single user, which is trivially converted to gpiod_set_debounce(). Signed-off-by: Arnd Bergmann Reviewed-by: Linus Walleij --- Documentation/driver-api/gpio/legacy.rst | 2 -- drivers/input/touchscreen/ads7846.c | 24 +++++++++++++----------- include/linux/gpio.h | 22 ---------------------- 3 files changed, 13 insertions(+), 35 deletions(-) diff --git a/Documentation/driver-api/gpio/legacy.rst b/Documentation/driver-api/gpio/legacy.rst index a0559d93efd1..e0306e78e34b 100644 --- a/Documentation/driver-api/gpio/legacy.rst +++ b/Documentation/driver-api/gpio/legacy.rst @@ -238,8 +238,6 @@ setup or driver probe/teardown code, so this is an easy constraint.):: ## gpio_free_array() gpio_free() - gpio_set_debounce() - Claiming and Releasing GPIOs diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 4c3dd01902d0..354da71ff037 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -139,7 +140,7 @@ struct ads7846 { int (*filter)(void *data, int data_idx, int *val); void *filter_data; int (*get_pendown_state)(void); - int gpio_pendown; + struct gpio_desc *gpio_pendown; void (*wait_for_sync)(void); }; @@ -222,7 +223,7 @@ static int get_pendown_state(struct ads7846 *ts) if (ts->get_pendown_state) return ts->get_pendown_state(); - return !gpio_get_value(ts->gpio_pendown); + return !gpiod_get_value(ts->gpio_pendown); } static void ads7846_report_pen_up(struct ads7846 *ts) @@ -1005,7 +1006,6 @@ static int ads7846_setup_pendown(struct spi_device *spi, if (pdata->get_pendown_state) { ts->get_pendown_state = pdata->get_pendown_state; } else if (gpio_is_valid(pdata->gpio_pendown)) { - err = devm_gpio_request_one(&spi->dev, pdata->gpio_pendown, GPIOF_IN, "ads7846_pendown"); if (err) { @@ -1015,15 +1015,17 @@ static int ads7846_setup_pendown(struct spi_device *spi, return err; } - ts->gpio_pendown = pdata->gpio_pendown; - - if (pdata->gpio_pendown_debounce) - gpio_set_debounce(pdata->gpio_pendown, - pdata->gpio_pendown_debounce); + ts->gpio_pendown = gpio_to_desc(pdata->gpio_pendown); } else { - dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n"); - return -EINVAL; + ts->gpio_pendown = gpiod_get(&spi->dev, "pendown-gpio", GPIOD_IN); + if (IS_ERR(ts->gpio_pendown)) { + dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n"); + return PTR_ERR(ts->gpio_pendown); + } } + if (pdata->gpio_pendown_debounce) + gpiod_set_debounce(ts->gpio_pendown, + pdata->gpio_pendown_debounce); return 0; } @@ -1192,7 +1194,7 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev) pdata->wakeup = of_property_read_bool(node, "wakeup-source") || of_property_read_bool(node, "linux,wakeup"); - pdata->gpio_pendown = of_get_named_gpio(dev->of_node, "pendown-gpio", 0); + pdata->gpio_pendown = -1; return pdata; } diff --git a/include/linux/gpio.h b/include/linux/gpio.h index e273a3287d8e..da7a5ae68e47 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -100,11 +100,6 @@ static inline int gpio_direction_output(unsigned gpio, int value) return gpiod_direction_output_raw(gpio_to_desc(gpio), value); } -static inline int gpio_set_debounce(unsigned gpio, unsigned debounce) -{ - return gpiod_set_debounce(gpio_to_desc(gpio), debounce); -} - static inline int gpio_get_value_cansleep(unsigned gpio) { return gpiod_get_raw_value_cansleep(gpio_to_desc(gpio)); @@ -123,11 +118,6 @@ static inline void gpio_set_value(unsigned gpio, int value) return gpiod_set_raw_value(gpio_to_desc(gpio), value); } -static inline int gpio_cansleep(unsigned gpio) -{ - return gpiod_cansleep(gpio_to_desc(gpio)); -} - static inline int gpio_to_irq(unsigned gpio) { return gpiod_to_irq(gpio_to_desc(gpio)); @@ -215,11 +205,6 @@ static inline int gpio_direction_output(unsigned gpio, int value) return -ENOSYS; } -static inline int gpio_set_debounce(unsigned gpio, unsigned debounce) -{ - return -ENOSYS; -} - static inline int gpio_get_value(unsigned gpio) { /* GPIO can never have been requested or set as {in,out}put */ @@ -233,13 +218,6 @@ static inline void gpio_set_value(unsigned gpio, int value) WARN_ON(1); } -static inline int gpio_cansleep(unsigned gpio) -{ - /* GPIO can never have been requested or set as {in,out}put */ - WARN_ON(1); - return 0; -} - static inline int gpio_get_value_cansleep(unsigned gpio) { /* GPIO can never have been requested or set as {in,out}put */ From patchwork Thu Jan 26 13:27:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732265 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=MIG7Hvsi; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2hPM4vYjz23h0 for ; 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s=k20201202; t=1674739699; bh=+KVGxa3nSdSTGBteOaQBR+2EljtaFsbp0PXIGG9LK7k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MIG7HvsiToehGzkO8xqCqFtjF09qXSP5RyIwlYJ+ZPTeOf59DU/euYsbQnyDkbC18 UfMWSFBSyVAEs2A+6nI5qMGLjjpUjhmKKiAvIKIWexyxUx8AHlBaVNJ46YXqRuRt4d uEaiERrQU9Tn7c2ba8YvxcAsDZGyDCkSmdk9LaCDPFFVUTNP4ewtendNzg6y6qdaLY XVkAgImLxv3w6G/gJAeZ8RT+HhSCjGs/zGgrzifXKyb/XeoECL8nb9EJk7UyMXoqMU kMpDCfIKmEKSF2UBlGuFi/e9SzrNO0m/eFIdcd+S/Lq6AAfGn/eQR29igFSD52pjkT dQvT+7Pzc9qsg== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org Subject: [PATCH 5/8] gpiolib: remove legacy gpio_export Date: Thu, 26 Jan 2023 14:27:58 +0100 Message-Id: <20230126132801.2042371-6-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann There are only a handful of users of gpio_export() and related functions. As these are just wrappers around the modern gpiod_export() helper, remove the wrappers and open-code the gpio_to_desc in all callers to shrink the legacy API. Signed-off-by: Arnd Bergmann Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij --- Documentation/admin-guide/gpio/sysfs.rst | 2 +- Documentation/driver-api/gpio/legacy.rst | 21 --------------- .../zh_CN/driver-api/gpio/legacy.rst | 20 -------------- Documentation/translations/zh_TW/gpio.txt | 18 ------------- arch/arm/mach-omap2/pdata-quirks.c | 9 ++++--- arch/sh/boards/mach-ap325rxa/setup.c | 7 ++--- drivers/gpio/gpiolib-sysfs.c | 4 +-- drivers/media/pci/sta2x11/sta2x11_vip.c | 10 ++++--- drivers/net/ieee802154/ca8210.c | 3 ++- include/linux/gpio.h | 27 ------------------- 10 files changed, 21 insertions(+), 100 deletions(-) diff --git a/Documentation/admin-guide/gpio/sysfs.rst b/Documentation/admin-guide/gpio/sysfs.rst index ec09ffd983e7..35171d15f78d 100644 --- a/Documentation/admin-guide/gpio/sysfs.rst +++ b/Documentation/admin-guide/gpio/sysfs.rst @@ -145,7 +145,7 @@ requested using gpio_request():: /* export the GPIO to userspace */ int gpiod_export(struct gpio_desc *desc, bool direction_may_change); - /* reverse gpio_export() */ + /* reverse gpiod_export() */ void gpiod_unexport(struct gpio_desc *desc); /* create a sysfs link to an exported GPIO node */ diff --git a/Documentation/driver-api/gpio/legacy.rst b/Documentation/driver-api/gpio/legacy.rst index e0306e78e34b..78372853c6d4 100644 --- a/Documentation/driver-api/gpio/legacy.rst +++ b/Documentation/driver-api/gpio/legacy.rst @@ -714,27 +714,6 @@ gpiochip nodes (possibly in conjunction with schematics) to determine the correct GPIO number to use for a given signal. -Exporting from Kernel code --------------------------- -Kernel code can explicitly manage exports of GPIOs which have already been -requested using gpio_request():: - - /* export the GPIO to userspace */ - int gpio_export(unsigned gpio, bool direction_may_change); - - /* reverse gpio_export() */ - void gpio_unexport(); - -After a kernel driver requests a GPIO, it may only be made available in -the sysfs interface by gpio_export(). The driver can control whether the -signal direction may change. This helps drivers prevent userspace code -from accidentally clobbering important system state. - -This explicit exporting can help with debugging (by making some kinds -of experiments easier), or can provide an always-there interface that's -suitable for documenting as part of a board support package. - - API Reference ============= diff --git a/Documentation/translations/zh_CN/driver-api/gpio/legacy.rst b/Documentation/translations/zh_CN/driver-api/gpio/legacy.rst index 74fa473bb504..2164999077a6 100644 --- a/Documentation/translations/zh_CN/driver-api/gpio/legacy.rst +++ b/Documentation/translations/zh_CN/driver-api/gpio/legacy.rst @@ -654,26 +654,6 @@ GPIO 控制器的路径类似 /sys/class/gpio/gpiochip42/ (对于从#42 GPIO 确定给定信号所用的 GPIO 编号。 -从内核代码中导出 ----------------- - -内核代码可以明确地管理那些已通过 gpio_request()申请的 GPIO 的导出:: - - /* 导出 GPIO 到用户空间 */ - int gpio_export(unsigned gpio, bool direction_may_change); - - /* gpio_export()的逆操作 */ - void gpio_unexport(); - -在一个内核驱动申请一个 GPIO 之后，它可以通过 gpio_export()使其在 sysfs -接口中可见。该驱动可以控制信号方向是否可修改。这有助于防止用户空间代码无意间 -破坏重要的系统状态。 - -这个明确的导出有助于(通过使某些实验更容易来)调试，也可以提供一个始终存在的接口， -与文档配合作为板级支持包的一部分。 - - -API参考 ======= 本节中列出的函数已被废弃。在新的代码中应该使用基于GPIO描述符的API。 diff --git a/Documentation/translations/zh_TW/gpio.txt b/Documentation/translations/zh_TW/gpio.txt index 1b986bbb0909..79076f535faa 100644 --- a/Documentation/translations/zh_TW/gpio.txt +++ b/Documentation/translations/zh_TW/gpio.txt @@ -615,21 +615,3 @@ GPIO 控制器的路徑類似 /sys/class/gpio/gpiochip42/ (對於從#42 GPIO 固定的,例如在擴展卡上的 GPIO會根據所使用的主板或所在堆疊架構中其他的板子而 有所不同。在這種情況下,你可能需要使用 gpiochip 節點(儘可能地結合電路圖)來 確定給定信號所用的 GPIO 編號。 - - -從內核代碼中導出 -------------- -內核代碼可以明確地管理那些已通過 gpio_request()申請的 GPIO 的導出: - - /* 導出 GPIO 到用戶空間 */ - int gpio_export(unsigned gpio, bool direction_may_change); - - /* gpio_export()的逆操作 */ - void gpio_unexport(); - -在一個內核驅動申請一個 GPIO 之後，它可以通過 gpio_export()使其在 sysfs -接口中可見。該驅動可以控制信號方向是否可修改。這有助於防止用戶空間代碼無意間 -破壞重要的系統狀態。 - -這個明確的導出有助於(通過使某些實驗更容易來)調試，也可以提供一個始終存在的接口， -與文檔配合作爲板級支持包的一部分。 diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 248478af5bfa..ee90fb42c955 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -6,6 +6,7 @@ */ #include #include +#include #include #include #include @@ -108,7 +109,7 @@ static int omap3_sbc_t3730_twl_callback(struct device *dev, if (res) return res; - gpio_export(gpio, 0); + gpiod_export(gpio_to_desc(gpio), 0); return 0; } @@ -123,7 +124,7 @@ static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name) return; } - gpio_export(gpio, 0); + gpiod_export(gpio_to_desc(gpio), 0); udelay(10); gpio_set_value(gpio, 1); @@ -200,8 +201,8 @@ static void __init omap3_sbc_t3517_wifi_init(void) return; } - gpio_export(cm_t3517_wlan_gpios[0].gpio, 0); - gpio_export(cm_t3517_wlan_gpios[1].gpio, 0); + gpiod_export(gpio_to_desc(cm_t3517_wlan_gpios[0].gpio), 0); + gpiod_export(gpio_to_desc(cm_t3517_wlan_gpios[1].gpio), 0); msleep(100); gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0); diff --git a/arch/sh/boards/mach-ap325rxa/setup.c b/arch/sh/boards/mach-ap325rxa/setup.c index 6e66ac194f7d..48055991152c 100644 --- a/arch/sh/boards/mach-ap325rxa/setup.c +++ b/arch/sh/boards/mach-ap325rxa/setup.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -411,16 +412,16 @@ static int __init ap325rxa_devices_setup(void) /* LD3 and LD4 LEDs */ gpio_request(GPIO_PTX5, NULL); /* RUN */ gpio_direction_output(GPIO_PTX5, 1); - gpio_export(GPIO_PTX5, 0); + gpiod_export(gpio_to_desc(GPIO_PTX5), 0); gpio_request(GPIO_PTX4, NULL); /* INDICATOR */ gpio_direction_output(GPIO_PTX4, 0); - gpio_export(GPIO_PTX4, 0); + gpiod_export(gpio_to_desc(GPIO_PTX4), 0); /* SW1 input */ gpio_request(GPIO_PTF7, NULL); /* MODE */ gpio_direction_input(GPIO_PTF7); - gpio_export(GPIO_PTF7, 0); + gpiod_export(gpio_to_desc(GPIO_PTF7), 0); /* LCDC */ gpio_request(GPIO_FN_LCDD15, NULL); diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index cd27bf173dec..cee135eb768e 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -491,7 +491,7 @@ static ssize_t unexport_store(struct class *class, goto done; desc = gpio_to_desc(gpio); - /* reject bogus commands (gpio_unexport ignores them) */ + /* reject bogus commands (gpiod_unexport ignores them) */ if (!desc) { pr_warn("%s: invalid GPIO %ld\n", __func__, gpio); return -EINVAL; @@ -790,7 +790,7 @@ static int __init gpiolib_sysfs_init(void) * early (e.g. before the class_register above was called). * * We run before arch_initcall() so chip->dev nodes can have - * registered, and so arch_initcall() can always gpio_export(). + * registered, and so arch_initcall() can always gpiod_export(). */ spin_lock_irqsave(&gpio_lock, flags); list_for_each_entry(gdev, &gpio_devices, list) { diff --git a/drivers/media/pci/sta2x11/sta2x11_vip.c b/drivers/media/pci/sta2x11/sta2x11_vip.c index 8535e49a4c4f..e4cf9d63e926 100644 --- a/drivers/media/pci/sta2x11/sta2x11_vip.c +++ b/drivers/media/pci/sta2x11/sta2x11_vip.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -889,6 +890,7 @@ static int sta2x11_vip_init_controls(struct sta2x11_vip *vip) static int vip_gpio_reserve(struct device *dev, int pin, int dir, const char *name) { + struct gpio_desc *desc = gpio_to_desc(pin); int ret = -ENODEV; if (!gpio_is_valid(pin)) @@ -900,7 +902,7 @@ static int vip_gpio_reserve(struct device *dev, int pin, int dir, return ret; } - ret = gpio_direction_output(pin, dir); + ret = gpiod_direction_output(desc, dir); if (ret) { dev_err(dev, "Failed to set direction for pin %d (%s)\n", pin, name); @@ -908,7 +910,7 @@ static int vip_gpio_reserve(struct device *dev, int pin, int dir, return ret; } - ret = gpio_export(pin, false); + ret = gpiod_export(desc, false); if (ret) { dev_err(dev, "Failed to export pin %d (%s)\n", pin, name); gpio_free(pin); @@ -928,8 +930,10 @@ static int vip_gpio_reserve(struct device *dev, int pin, int dir, static void vip_gpio_release(struct device *dev, int pin, const char *name) { if (gpio_is_valid(pin)) { + struct gpio_desc *desc = gpio_to_desc(pin); + dev_dbg(dev, "releasing pin %d (%s)\n", pin, name); - gpio_unexport(pin); + gpiod_unexport(desc); gpio_free(pin); } } diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c index e1a569b99e4a..5c0be6a3ec5e 100644 --- a/drivers/net/ieee802154/ca8210.c +++ b/drivers/net/ieee802154/ca8210.c @@ -51,6 +51,7 @@ #include #include #include +#include #include #include #include @@ -2853,7 +2854,7 @@ static int ca8210_interrupt_init(struct spi_device *spi) ); if (ret) { dev_crit(&spi->dev, "request_irq %d failed\n", pdata->irq_id); - gpio_unexport(pdata->gpio_irq); + gpiod_unexport(gpio_to_desc(pdata->gpio_irq)); gpio_free(pdata->gpio_irq); } diff --git a/include/linux/gpio.h b/include/linux/gpio.h index da7a5ae68e47..57ec3975b656 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -127,20 +127,6 @@ extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *labe extern int gpio_request_array(const struct gpio *array, size_t num); extern void gpio_free_array(const struct gpio *array, size_t num); -/* - * A sysfs interface can be exported by individual drivers if they want, - * but more typically is configured entirely from userspace. - */ -static inline int gpio_export(unsigned gpio, bool direction_may_change) -{ - return gpiod_export(gpio_to_desc(gpio), direction_may_change); -} - -static inline void gpio_unexport(unsigned gpio) -{ - gpiod_unexport(gpio_to_desc(gpio)); -} - /* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */ struct device; @@ -231,19 +217,6 @@ static inline void gpio_set_value_cansleep(unsigned gpio, int value) WARN_ON(1); } -static inline int gpio_export(unsigned gpio, bool direction_may_change) -{ - /* GPIO can never have been requested or set as {in,out}put */ - WARN_ON(1); - return -EINVAL; -} - -static inline void gpio_unexport(unsigned gpio) -{ - /* GPIO can never have been exported */ - WARN_ON(1); -} - static inline int gpio_to_irq(unsigned gpio) { /* GPIO can never have been requested or set as input */ From patchwork Thu Jan 26 13:27:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732264 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; 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Thu, 26 Jan 2023 13:28:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64426C433EF; Thu, 26 Jan 2023 13:28:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674739702; bh=jxcMnfhyxChs+Qs+/oO6mhoGvEOqz9EkwgWaoWZcekc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QO2veeVyvDxgGnxxwYXJr3Q/tu2KFGf/XIsPHVlblFXE4ix9fdAKBiOly0Akp9H6p dbZGEPUknC6YcBk12pPknWw0vmv09Q9eaCRX7eUWiAU5COeL5MMNFYR74/3Cvg0E+O DQPGJcoeUW39blFCliWBc8DVK/S+jFMenvp4PDisWOzxw+KaEZ9GsxV/OTq845SxUD E/EnFmJl/IBqYi7VFgHq3WQ7qq4oTSFjbdlEk8gP3/JE5oiAbKSBHN9JwUJYfD/tDG /0+T+qAJXfDeW2QPFZuUddvM7WKAl5z80DZlqpdRDBlP1ABToomwIztzo4kscITGp2 ngMcqZH456JLw== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org Subject: [PATCH 6/8] gpiolib: split linux/gpio/driver.h out of linux/gpio.h Date: Thu, 26 Jan 2023 14:27:59 +0100 Message-Id: <20230126132801.2042371-7-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann Almost all gpio drivers include linux/gpio/driver.h, and other files should not rely on includes from this header. Remove the indirect include from here and include the correct headers directly from where they are used. Signed-off-by: Arnd Bergmann Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij --- arch/arm/mach-omap1/irq.c | 1 + arch/arm/mach-orion5x/board-rd88f5182.c | 1 + arch/arm/mach-s3c/s3c64xx.c | 1 + arch/arm/mach-sa1100/assabet.c | 1 + arch/arm/plat-orion/gpio.c | 1 + drivers/net/wireless/broadcom/brcm80211/brcmsmac/led.c | 1 + include/linux/gpio.h | 2 -- include/linux/mfd/ucb1x00.h | 1 + 8 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap1/irq.c b/arch/arm/mach-omap1/irq.c index 9ccc784fd614..bfc7ab010ae2 100644 --- a/arch/arm/mach-omap1/irq.c +++ b/arch/arm/mach-omap1/irq.c @@ -41,6 +41,7 @@ #include #include #include +#include #include #include diff --git a/arch/arm/mach-orion5x/board-rd88f5182.c b/arch/arm/mach-orion5x/board-rd88f5182.c index 596601367989..1c14e49a90a6 100644 --- a/arch/arm/mach-orion5x/board-rd88f5182.c +++ b/arch/arm/mach-orion5x/board-rd88f5182.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include diff --git a/arch/arm/mach-s3c/s3c64xx.c b/arch/arm/mach-s3c/s3c64xx.c index c20163e6a8b4..c5aa4d8ed8bd 100644 --- a/arch/arm/mach-s3c/s3c64xx.c +++ b/arch/arm/mach-s3c/s3c64xx.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index 04f8a1680bc1..06e7b1358226 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c index 3ef9ecdd6343..4946d8066f6a 100644 --- a/arch/arm/plat-orion/gpio.c +++ b/arch/arm/plat-orion/gpio.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/led.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/led.c index 9540a05247c2..89c8829528c2 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/led.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/led.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include #include +#include #include #include #include diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 57ec3975b656..06a33339994e 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -54,8 +54,6 @@ struct gpio { }; #ifdef CONFIG_GPIOLIB -#include -#include #include /* diff --git a/include/linux/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h index 9aed2797d3d5..2e65354fc7b8 100644 --- a/include/linux/mfd/ucb1x00.h +++ b/include/linux/mfd/ucb1x00.h @@ -9,6 +9,7 @@ #include #include +#include #include #include From patchwork Thu Jan 26 13:28:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732266 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=Zla2yxB2; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4P2hPN1b17z23hj for ; 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d=kernel.org; s=k20201202; t=1674739704; bh=mqa37kWEVxEKJ98BESE+T+QAPDFpl5zu4+RWMWS4vv8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zla2yxB2yXjtl+bdc+Ouf7v7vF1p30HEvY0yAUn0r4m3wg4MqmvJdVWbVqtifitea Ypjf4zJrquR811IdHoeXEMfJA9jVvRPOMXOLh81fsFnev/K3narWAGtR1qcQ8BHjkz H91KIjUYd0TWSN+1gjoAQ9HheGYOnxZt8eaN4yTZIi4ZN8rfG3bybB/EmFTrj7Ic9u 1hIacxYskhLIPbSGWxMha1oX16tiP9OPs7ww6b9CGHyNb8ScR8vol9qgppfxwID/LQ FCU1/boMYz2WDxA1dbPrpbSkRtX9Ny7tGYA772cV+yQpkXVmQu9wSu4KQYw1RMFeGw VadwD9aLxTH1A== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org Subject: [PATCH 7/8] gpiolib: split of_mm_gpio_chip out of linux/of_gpio.h Date: Thu, 26 Jan 2023 14:28:00 +0100 Message-Id: <20230126132801.2042371-8-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann This is a rarely used feature that has nothing to do with the client-side of_gpio.h. Split it out with a separate header file and Kconfig option so it can be removed on its own timeline aside from removing the of_gpio consumer interfaces. Signed-off-by: Arnd Bergmann Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij --- arch/powerpc/platforms/44x/Kconfig | 1 + arch/powerpc/platforms/4xx/gpio.c | 2 +- arch/powerpc/platforms/8xx/Kconfig | 1 + arch/powerpc/platforms/8xx/cpm1.c | 2 +- arch/powerpc/platforms/Kconfig | 2 ++ arch/powerpc/sysdev/cpm_common.c | 2 +- drivers/gpio/Kconfig | 11 +++++++ drivers/gpio/TODO | 15 ++++++--- drivers/gpio/gpio-altera.c | 2 +- drivers/gpio/gpio-mm-lantiq.c | 2 +- drivers/gpio/gpio-mpc5200.c | 2 +- drivers/gpio/gpiolib-of.c | 3 ++ drivers/soc/fsl/qe/gpio.c | 2 +- include/linux/gpio/legacy-of-mm-gpiochip.h | 36 ++++++++++++++++++++++ include/linux/of_gpio.h | 21 ------------- 15 files changed, 71 insertions(+), 33 deletions(-) create mode 100644 include/linux/gpio/legacy-of-mm-gpiochip.h diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index 25b80cd558f8..1624ebf95497 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -230,6 +230,7 @@ config PPC4xx_GPIO bool "PPC4xx GPIO support" depends on 44x select GPIOLIB + select OF_GPIO_MM_GPIOCHIP help Enable gpiolib support for ppc440 based boards diff --git a/arch/powerpc/platforms/4xx/gpio.c b/arch/powerpc/platforms/4xx/gpio.c index 49ee8d365852..e5f2319e5cbe 100644 --- a/arch/powerpc/platforms/4xx/gpio.c +++ b/arch/powerpc/platforms/4xx/gpio.c @@ -14,7 +14,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/powerpc/platforms/8xx/Kconfig b/arch/powerpc/platforms/8xx/Kconfig index 60cc5b537a98..a14d9d8997a4 100644 --- a/arch/powerpc/platforms/8xx/Kconfig +++ b/arch/powerpc/platforms/8xx/Kconfig @@ -101,6 +101,7 @@ comment "Generic MPC8xx Options" config 8xx_GPIO bool "GPIO API Support" select GPIOLIB + select OF_GPIO_MM_GPIOCHIP help Saying Y here will cause the ports on an MPC8xx processor to be used with the GPIO API. If you say N here, the kernel needs less memory. diff --git a/arch/powerpc/platforms/8xx/cpm1.c b/arch/powerpc/platforms/8xx/cpm1.c index bb38c8d8f8de..56ca14f77543 100644 --- a/arch/powerpc/platforms/8xx/cpm1.c +++ b/arch/powerpc/platforms/8xx/cpm1.c @@ -44,7 +44,7 @@ #include #ifdef CONFIG_8xx_GPIO -#include +#include #endif #define CPM_MAP_SIZE (0x4000) diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index d41dad227de8..8e4bbd19dec5 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -244,6 +244,7 @@ config QE_GPIO bool "QE GPIO support" depends on QUICC_ENGINE select GPIOLIB + select OF_GPIO_MM_GPIOCHIP help Say Y here if you're going to use hardware that connects to the QE GPIOs. @@ -254,6 +255,7 @@ config CPM2 select CPM select HAVE_PCI select GPIOLIB + select OF_GPIO_MM_GPIOCHIP help The CPM2 (Communications Processor Module) is a coprocessor on embedded CPUs made by Freescale. Selecting this option means that diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index 7dc1960f8bdb..8234013a8772 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -31,7 +31,7 @@ #include #if defined(CONFIG_CPM2) || defined(CONFIG_8xx_GPIO) -#include +#include #endif static int __init cpm_init(void) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 06a268d56800..7534a2115d18 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -39,6 +39,14 @@ config GPIOLIB_IRQCHIP select IRQ_DOMAIN bool +config OF_GPIO_MM_GPIOCHIP + bool + help + This adds support for the legacy 'struct of_mm_gpio_chip' interface + from PowerPC. Existing drivers using this interface need to select + this symbol, but new drivers should use the generic gpio-mmio + infrastructure instead. + config DEBUG_GPIO bool "Debug GPIO calls" depends on DEBUG_KERNEL @@ -131,6 +139,7 @@ config GPIO_ALTERA tristate "Altera GPIO" depends on OF_GPIO select GPIOLIB_IRQCHIP + select OF_GPIO_MM_GPIOCHIP help Say Y or M here to build support for the Altera PIO device. @@ -403,6 +412,7 @@ config GPIO_MENZ127 config GPIO_MM_LANTIQ bool "Lantiq Memory mapped GPIOs" depends on LANTIQ && SOC_XWAY + select OF_GPIO_MM_GPIOCHIP help This enables support for memory mapped GPIOs on the External Bus Unit (EBU) found on Lantiq SoCs. The GPIOs are output only as they are @@ -411,6 +421,7 @@ config GPIO_MM_LANTIQ config GPIO_MPC5200 def_bool y depends on PPC_MPC52xx + select OF_GPIO_MM_GPIOCHIP config GPIO_MPC8XXX bool "MPC512x/MPC8xxx/QorIQ GPIO support" diff --git a/drivers/gpio/TODO b/drivers/gpio/TODO index 68ada1066941..189c3abe7e79 100644 --- a/drivers/gpio/TODO +++ b/drivers/gpio/TODO @@ -59,11 +59,6 @@ the device tree back-end. It is legacy and should not be used in new code. Work items: -- Get rid of struct of_mm_gpio_chip altogether: use the generic MMIO - GPIO for all current users (see below). Delete struct of_mm_gpio_chip, - to_of_mm_gpio_chip(), of_mm_gpiochip_add_data(), of_mm_gpiochip_remove() - from the kernel. - - Change all consumer drivers that #include to #include and stop doing custom parsing of the GPIO lines from the device tree. This can be tricky and often ivolves @@ -81,6 +76,16 @@ Work items: uses or instead. +Get rid of + +Work items: + +- Get rid of struct of_mm_gpio_chip altogether: use the generic MMIO + GPIO for all current users (see below). Delete struct of_mm_gpio_chip, + to_of_mm_gpio_chip(), of_mm_gpiochip_add_data(), of_mm_gpiochip_remove(), + CONFIG_OF_GPIO_MM_GPIOCHIP from the kernel. + + Get rid of This legacy header is a one stop shop for anything GPIO is closely tied diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c index b59fae993626..99e137f8097e 100644 --- a/drivers/gpio/gpio-altera.c +++ b/drivers/gpio/gpio-altera.c @@ -7,7 +7,7 @@ #include #include #include -#include /* For of_mm_gpio_chip */ +#include #include #define ALTERA_GPIO_MAX_NGPIO 32 diff --git a/drivers/gpio/gpio-mm-lantiq.c b/drivers/gpio/gpio-mm-lantiq.c index 538e31fe8903..27ff84c5d162 100644 --- a/drivers/gpio/gpio-mm-lantiq.c +++ b/drivers/gpio/gpio-mm-lantiq.c @@ -10,8 +10,8 @@ #include #include #include +#include #include -#include #include #include diff --git a/drivers/gpio/gpio-mpc5200.c b/drivers/gpio/gpio-mpc5200.c index 000494e0c533..3b0bfff8c778 100644 --- a/drivers/gpio/gpio-mpc5200.c +++ b/drivers/gpio/gpio-mpc5200.c @@ -8,7 +8,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index edc769d2d338..6a08569a20c1 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -877,6 +877,8 @@ static int of_gpio_simple_xlate(struct gpio_chip *gc, return gpiospec->args[0]; } +#if IS_ENABLED(CONFIG_OF_GPIO_MM_GPIOCHIP) +#include /** * of_mm_gpiochip_add_data - Add memory mapped GPIO chip (bank) * @np: device node of the GPIO chip @@ -949,6 +951,7 @@ void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc) kfree(gc->label); } EXPORT_SYMBOL_GPL(of_mm_gpiochip_remove); +#endif #ifdef CONFIG_PINCTRL static int of_gpiochip_add_pin_range(struct gpio_chip *chip) diff --git a/drivers/soc/fsl/qe/gpio.c b/drivers/soc/fsl/qe/gpio.c index 1c41eb49d5a7..3ef24ba0245b 100644 --- a/drivers/soc/fsl/qe/gpio.c +++ b/drivers/soc/fsl/qe/gpio.c @@ -13,7 +13,7 @@ #include #include #include -#include /* for of_mm_gpio_chip */ +#include #include #include #include diff --git a/include/linux/gpio/legacy-of-mm-gpiochip.h b/include/linux/gpio/legacy-of-mm-gpiochip.h new file mode 100644 index 000000000000..2e2bd3b19cc3 --- /dev/null +++ b/include/linux/gpio/legacy-of-mm-gpiochip.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * OF helpers for the old of_mm_gpio_chip, used on ppc32 and nios2, + * do not use in new code. + * + * Copyright (c) 2007-2008 MontaVista Software, Inc. + * + * Author: Anton Vorontsov + */ + +#ifndef __LINUX_GPIO_LEGACY_OF_MM_GPIO_CHIP_H +#define __LINUX_GPIO_LEGACY_OF_MM_GPIO_CHIP_H + +#include +#include + +/* + * OF GPIO chip for memory mapped banks + */ +struct of_mm_gpio_chip { + struct gpio_chip gc; + void (*save_regs)(struct of_mm_gpio_chip *mm_gc); + void __iomem *regs; +}; + +static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) +{ + return container_of(gc, struct of_mm_gpio_chip, gc); +} + +extern int of_mm_gpiochip_add_data(struct device_node *np, + struct of_mm_gpio_chip *mm_gc, + void *data); +extern void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc); + +#endif /* __LINUX_GPIO_LEGACY_OF_MM_GPIO_CHIP_H */ diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index 935225caf70d..04e1f76acdd7 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -34,30 +34,9 @@ enum of_gpio_flags { #ifdef CONFIG_OF_GPIO -#include - -/* - * OF GPIO chip for memory mapped banks - */ -struct of_mm_gpio_chip { - struct gpio_chip gc; - void (*save_regs)(struct of_mm_gpio_chip *mm_gc); - void __iomem *regs; -}; - -static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) -{ - return container_of(gc, struct of_mm_gpio_chip, gc); -} - extern int of_get_named_gpio(const struct device_node *np, const char *list_name, int index); -extern int of_mm_gpiochip_add_data(struct device_node *np, - struct of_mm_gpio_chip *mm_gc, - void *data); -extern void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc); - #else /* CONFIG_OF_GPIO */ #include From patchwork Thu Jan 26 13:28:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1732267 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=c5E9X+aa; 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Thu, 26 Jan 2023 13:28:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674739706; bh=e4AsdmwdSJCP/xsPyWv+tSbBA9IAnfawTLOAVhDVorM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c5E9X+aal0HBiiHd/it1x+8vs2MPfjTzCvZUKFksXBNqlsbNQ3DdeUwL3f6m22A1+ TzXj1zrVxwjiwEeZ0PGlvkoCgKps9yaSN28g7KURiMfNjIF2dNL/fPuhRlgLB/Be98 g/Q8p7/d7dwBa/S7/YJtF5AVQI7hrWhRvxOqGo4bkoRLoEDswwxClcBRA6Evydnhsl eDCeZUUQLHFA23GsiteIsUXyOyIt9zXvA9qiQqNv48BWu2iF3P2fW6kHqqk046xYsw CY3V/5pfHLg44+E5vgmVsVpk5V3STym/VccU0zispNJ1V43tlzCjlQBxE4f84/QaII KsjJCluVhtUTA== From: Arnd Bergmann To: linux-gpio@vger.kernel.org Cc: Arnd Bergmann , Andy Shevchenko , Bartosz Golaszewski , Christophe Leroy , Dmitry Torokhov , Linus Walleij , linux-kernel@vger.kernel.org Subject: [PATCH 8/8] gpiolib: move of_gpio_flags into gpiolib-of.c Date: Thu, 26 Jan 2023 14:28:01 +0100 Message-Id: <20230126132801.2042371-9-arnd@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126132801.2042371-1-arnd@kernel.org> References: <20230126132801.2042371-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Arnd Bergmann There is no need for this in the header any more, it's just an implementation detail now. Signed-off-by: Arnd Bergmann --- drivers/gpio/gpiolib-of.c | 15 +++++++++++++++ include/linux/of_gpio.h | 15 --------------- 2 files changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 6a08569a20c1..1563ddcf32d4 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -23,6 +23,21 @@ #include "gpiolib.h" #include "gpiolib-of.h" +/* + * This is Linux-specific flags. By default controllers' and Linux' mapping + * match, but GPIO controllers are free to translate their own flags to + * Linux-specific in their .xlate callback. Though, 1:1 mapping is recommended. + */ +enum of_gpio_flags { + OF_GPIO_ACTIVE_LOW = 0x1, + OF_GPIO_SINGLE_ENDED = 0x2, + OF_GPIO_OPEN_DRAIN = 0x4, + OF_GPIO_TRANSITORY = 0x8, + OF_GPIO_PULL_UP = 0x10, + OF_GPIO_PULL_DOWN = 0x20, + OF_GPIO_PULL_DISABLE = 0x40, +}; + /** * of_gpio_named_count() - Count GPIOs for a device * @np: device node to count GPIOs for diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index 04e1f76acdd7..d0f66a5e1b2a 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -17,21 +17,6 @@ struct device_node; -/* - * This is Linux-specific flags. By default controllers' and Linux' mapping - * match, but GPIO controllers are free to translate their own flags to - * Linux-specific in their .xlate callback. Though, 1:1 mapping is recommended. - */ -enum of_gpio_flags { - OF_GPIO_ACTIVE_LOW = 0x1, - OF_GPIO_SINGLE_ENDED = 0x2, - OF_GPIO_OPEN_DRAIN = 0x4, - OF_GPIO_TRANSITORY = 0x8, - OF_GPIO_PULL_UP = 0x10, - OF_GPIO_PULL_DOWN = 0x20, - OF_GPIO_PULL_DISABLE = 0x40, -}; - #ifdef CONFIG_OF_GPIO extern int of_get_named_gpio(const struct device_node *np,