From patchwork Thu Mar 4 20:12:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1447483 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Ds2F16QL6z9sW8 for ; Fri, 5 Mar 2021 07:16:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237219AbhCDUPS (ORCPT ); Thu, 4 Mar 2021 15:15:18 -0500 Received: from mga07.intel.com ([134.134.136.100]:17133 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231559AbhCDUOt (ORCPT ); Thu, 4 Mar 2021 15:14:49 -0500 IronPort-SDR: jA3tRN/LQfze8JrgZn9uZJaxhj/o65ljFDcDv+6pUSRUFGhT9IU60KDzrYiIVzkFmBO0B4DWae zhyRlK0btyow== X-IronPort-AV: E=McAfee;i="6000,8403,9913"; a="251537522" X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="251537522" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2021 12:13:03 -0800 IronPort-SDR: czqj7wC9TMRdZuKHuO0XYE++vw4CvYHqTmw+77iA/YFNODawxjfdrevLOGOb26qvotA3DyDCNi Ofei1NQCt+5Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="369867813" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 04 Mar 2021 12:13:00 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 78BF61F4; Thu, 4 Mar 2021 22:13:00 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Mika Westerberg , Linus Walleij , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Marc Zyngier , Jonathan Corbet , Bartosz Golaszewski , Thomas Gleixner , "Rafael J. Wysocki" Subject: [PATCH v3 1/5] irqdomain: Introduce irq_domain_create_simple() API Date: Thu, 4 Mar 2021 22:12:49 +0200 Message-Id: <20210304201253.14652-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> References: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Linus Walleij pointed out that ird_domain_add_simple() gained additional functionality and can't be anymore replaced with a simple conditional. In preparation to upgrade GPIO library to use fwnode, introduce irq_domain_create_simple() API which is functional equivalent to the existing irq_domain_add_simple(), but takes a pointer to the struct fwnode_handle as a parameter. While at it, amend documentation to mention irq_domain_create_*() functions where it makes sense. Signed-off-by: Andy Shevchenko Acked-by: Marc Zyngier Reviewed-by: Linus Walleij --- Documentation/core-api/irq/irq-domain.rst | 22 ++++++++++++---------- include/linux/irqdomain.h | 19 ++++++++++++++----- kernel/irq/irqdomain.c | 20 ++++++++++---------- 3 files changed, 36 insertions(+), 25 deletions(-) diff --git a/Documentation/core-api/irq/irq-domain.rst b/Documentation/core-api/irq/irq-domain.rst index a77c24c27f7b..8214e215a8bf 100644 --- a/Documentation/core-api/irq/irq-domain.rst +++ b/Documentation/core-api/irq/irq-domain.rst @@ -42,10 +42,10 @@ irq_domain usage ================ An interrupt controller driver creates and registers an irq_domain by -calling one of the irq_domain_add_*() functions (each mapping method -has a different allocator function, more on that later). The function -will return a pointer to the irq_domain on success. The caller must -provide the allocator function with an irq_domain_ops structure. +calling one of the irq_domain_add_*() or irq_domain_create_*() functions +(each mapping method has a different allocator function, more on that later). +The function will return a pointer to the irq_domain on success. The caller +must provide the allocator function with an irq_domain_ops structure. In most cases, the irq_domain will begin empty without any mappings between hwirq and IRQ numbers. Mappings are added to the irq_domain @@ -147,6 +147,7 @@ Legacy irq_domain_add_simple() irq_domain_add_legacy() irq_domain_add_legacy_isa() + irq_domain_create_simple() irq_domain_create_legacy() The Legacy mapping is a special case for drivers that already have a @@ -169,13 +170,13 @@ supported. For example, ISA controllers would use the legacy map for mapping Linux IRQs 0-15 so that existing ISA drivers get the correct IRQ numbers. -Most users of legacy mappings should use irq_domain_add_simple() which -will use a legacy domain only if an IRQ range is supplied by the -system and will otherwise use a linear domain mapping. The semantics -of this call are such that if an IRQ range is specified then +Most users of legacy mappings should use irq_domain_add_simple() or +irq_domain_create_simple() which will use a legacy domain only if an IRQ range +is supplied by the system and will otherwise use a linear domain mapping. +The semantics of this call are such that if an IRQ range is specified then descriptors will be allocated on-the-fly for it, and if no range is -specified it will fall through to irq_domain_add_linear() which means -*no* irq descriptors will be allocated. +specified it will fall through to irq_domain_add_linear() or +irq_domain_create_linear() which means *no* irq descriptors will be allocated. A typical use case for simple domains is where an irqchip provider is supporting both dynamic and static IRQ assignments. @@ -186,6 +187,7 @@ that the driver using the simple domain call irq_create_mapping() before any irq_find_mapping() since the latter will actually work for the static IRQ assignment case. +irq_domain_add_simple() and irq_domain_create_simple() as well as irq_domain_add_legacy() and irq_domain_create_legacy() are functionally equivalent, except for the first argument is different - the former accepts an Open Firmware specific 'struct device_node', while the latter diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 42d196805f58..6e78f5909723 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -260,11 +260,11 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, irq_hw_number_t hwirq_max, int direct_max, const struct irq_domain_ops *ops, void *host_data); -struct irq_domain *irq_domain_add_simple(struct device_node *of_node, - unsigned int size, - unsigned int first_irq, - const struct irq_domain_ops *ops, - void *host_data); +struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, + unsigned int size, + unsigned int first_irq, + const struct irq_domain_ops *ops, + void *host_data); struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, unsigned int size, unsigned int first_irq, @@ -329,6 +329,15 @@ static inline struct irq_domain *irq_find_host(struct device_node *node) return d; } +static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node, + unsigned int size, + unsigned int first_irq, + const struct irq_domain_ops *ops, + void *host_data) +{ + return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data); +} + /** * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain. * @of_node: pointer to interrupt controller's device tree node. diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 288151393a06..a7f4028971e4 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -295,8 +295,8 @@ void irq_domain_update_bus_token(struct irq_domain *domain, EXPORT_SYMBOL_GPL(irq_domain_update_bus_token); /** - * irq_domain_add_simple() - Register an irq_domain and optionally map a range of irqs - * @of_node: pointer to interrupt controller's device tree node. + * irq_domain_create_simple() - Register an irq_domain and optionally map a range of irqs + * @fwnode: firmware node for the interrupt controller * @size: total number of irqs in mapping * @first_irq: first number of irq block assigned to the domain, * pass zero to assign irqs on-the-fly. If first_irq is non-zero, then @@ -312,15 +312,15 @@ EXPORT_SYMBOL_GPL(irq_domain_update_bus_token); * irqs get mapped dynamically on the fly. However, if the controller requires * static virq assignments (non-DT boot) then it will set that up correctly. */ -struct irq_domain *irq_domain_add_simple(struct device_node *of_node, - unsigned int size, - unsigned int first_irq, - const struct irq_domain_ops *ops, - void *host_data) +struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, + unsigned int size, + unsigned int first_irq, + const struct irq_domain_ops *ops, + void *host_data) { struct irq_domain *domain; - domain = __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data); + domain = __irq_domain_add(fwnode, size, size, 0, ops, host_data); if (!domain) return NULL; @@ -328,7 +328,7 @@ struct irq_domain *irq_domain_add_simple(struct device_node *of_node, if (IS_ENABLED(CONFIG_SPARSE_IRQ)) { /* attempt to allocated irq_descs */ int rc = irq_alloc_descs(first_irq, first_irq, size, - of_node_to_nid(of_node)); + of_node_to_nid(to_of_node(fwnode))); if (rc < 0) pr_info("Cannot allocate irq_descs @ IRQ%d, assuming pre-allocated\n", first_irq); @@ -338,7 +338,7 @@ struct irq_domain *irq_domain_add_simple(struct device_node *of_node, return domain; } -EXPORT_SYMBOL_GPL(irq_domain_add_simple); +EXPORT_SYMBOL_GPL(irq_domain_create_simple); /** * irq_domain_add_legacy() - Allocate and register a legacy revmap irq_domain. From patchwork Thu Mar 4 20:12:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1447484 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Ds2F21bhKz9sWF for ; Fri, 5 Mar 2021 07:16:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236857AbhCDUPR (ORCPT ); Thu, 4 Mar 2021 15:15:17 -0500 Received: from mga04.intel.com ([192.55.52.120]:44580 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232049AbhCDUOu (ORCPT ); Thu, 4 Mar 2021 15:14:50 -0500 IronPort-SDR: +w8cJvAokE4zmdBMzlmMWrgXK/Z1J5bNQa3lkl2hdsT85xRz2gcbnMu19JA92kOXYTU15gOKDJ f9E6NwkxN0hg== X-IronPort-AV: E=McAfee;i="6000,8403,9913"; a="185091347" X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="185091347" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2021 12:13:05 -0800 IronPort-SDR: 9BvWGDsfn+yqJvSNB/jCpOizBB3vYdQStCf6oWHjICd4IwmPPwEF0i/fWSgO/YJ2EaqTjaPwUr tc2Uw7zcS53g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="368308590" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga003.jf.intel.com with ESMTP; 04 Mar 2021 12:13:01 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 8557F2B7; Thu, 4 Mar 2021 22:13:00 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Mika Westerberg , Linus Walleij , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Marc Zyngier , Jonathan Corbet , Bartosz Golaszewski , Thomas Gleixner , "Rafael J. Wysocki" Subject: [PATCH v3 2/5] gpiolib: Unify the checks on fwnode type Date: Thu, 4 Mar 2021 22:12:50 +0200 Message-Id: <20210304201253.14652-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> References: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org We have (historically) different approaches how we identify the type of a given fwnode. Let's standardize them across the library code. Signed-off-by: Andy Shevchenko Reviewed-by: Linus Walleij --- drivers/gpio/gpiolib.c | 28 +++++++++++++--------------- 1 file changed, 13 insertions(+), 15 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index adf55db080d8..083d7e1c7cde 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3678,11 +3678,12 @@ EXPORT_SYMBOL_GPL(fwnode_gpiod_get_index); */ int gpiod_count(struct device *dev, const char *con_id) { + const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL; int count = -ENOENT; - if (IS_ENABLED(CONFIG_OF) && dev && dev->of_node) + if (is_of_node(fwnode)) count = of_gpio_get_count(dev, con_id); - else if (IS_ENABLED(CONFIG_ACPI) && dev && ACPI_HANDLE(dev)) + else if (is_acpi_node(fwnode)) count = acpi_gpio_count(dev, con_id); if (count < 0) @@ -3820,18 +3821,17 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, int ret; /* Maybe we have a device name, maybe not */ const char *devname = dev ? dev_name(dev) : "?"; + const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL; dev_dbg(dev, "GPIO lookup for consumer %s\n", con_id); - if (dev) { - /* Using device tree? */ - if (IS_ENABLED(CONFIG_OF) && dev->of_node) { - dev_dbg(dev, "using device tree for GPIO lookup\n"); - desc = of_find_gpio(dev, con_id, idx, &lookupflags); - } else if (ACPI_COMPANION(dev)) { - dev_dbg(dev, "using ACPI for GPIO lookup\n"); - desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags); - } + /* Using device tree? */ + if (is_of_node(fwnode)) { + dev_dbg(dev, "using device tree for GPIO lookup\n"); + desc = of_find_gpio(dev, con_id, idx, &lookupflags); + } else if (is_acpi_node(fwnode)) { + dev_dbg(dev, "using ACPI for GPIO lookup\n"); + desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags); } /* @@ -3915,9 +3915,6 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, struct gpio_desc *desc = ERR_PTR(-ENODEV); int ret; - if (!fwnode) - return ERR_PTR(-EINVAL); - if (is_of_node(fwnode)) { desc = gpiod_get_from_of_node(to_of_node(fwnode), propname, index, @@ -3933,7 +3930,8 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, acpi_gpio_update_gpiod_flags(&dflags, &info); acpi_gpio_update_gpiod_lookup_flags(&lflags, &info); - } + } else + return ERR_PTR(-EINVAL); /* Currently only ACPI takes this path */ ret = gpiod_request(desc, label); From patchwork Thu Mar 4 20:12:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1447488 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Ds2G03V7zz9sW4 for ; Fri, 5 Mar 2021 07:16:56 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237982AbhCDUQV (ORCPT ); Thu, 4 Mar 2021 15:16:21 -0500 Received: from mga07.intel.com ([134.134.136.100]:17133 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237483AbhCDUQK (ORCPT ); Thu, 4 Mar 2021 15:16:10 -0500 IronPort-SDR: FJ/WzgRQoDv+2VzFgA/E46hdQvXw3ZEDiTyOMkfKUrz6wZ7hkZ/VSdOnuQQO17gZ0WH2BBmg6h AgaAyTtj2BJg== X-IronPort-AV: E=McAfee;i="6000,8403,9913"; a="251537524" X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="251537524" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2021 12:13:03 -0800 IronPort-SDR: jDvoZbqh1YyXX2x7kCfpMk0WbIt+wBeQ6z8VNiOjeUQAf47LnitebRNrPQqO08piskAjNBZe16 dYtnP1XBW/YA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="518783505" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga004.jf.intel.com with ESMTP; 04 Mar 2021 12:13:00 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 9009F29E; Thu, 4 Mar 2021 22:13:00 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Mika Westerberg , Linus Walleij , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Marc Zyngier , Jonathan Corbet , Bartosz Golaszewski , Thomas Gleixner , "Rafael J. Wysocki" Subject: [PATCH v3 3/5] gpiolib: Move of_node operations to gpiolib-of and correct fwnode use Date: Thu, 4 Mar 2021 22:12:51 +0200 Message-Id: <20210304201253.14652-4-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> References: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The initial value of the OF node based on presence of parent, but at the same time this operation somehow appeared separately from others that handle the OF case. On the other hand there is no need to assign dev->fwnode in the OF case if code properly retrieves fwnode, i.e. via dev_fwnode() helper. Amend gpiolib.c and gpiolib-of.c code in order to group OF operations. Signed-off-by: Andy Shevchenko Reviewed-by: Linus Walleij --- drivers/gpio/gpiolib-of.c | 6 ++++-- drivers/gpio/gpiolib.c | 9 ++++----- 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index baf0153b7bca..bbcc7c073f63 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -1042,11 +1042,13 @@ void of_gpiochip_remove(struct gpio_chip *chip) void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) { + /* Set default OF node to parent's one if present */ + if (gc->parent) + gdev->dev.of_node = gc->parent->of_node; + /* If the gpiochip has an assigned OF node this takes precedence */ if (gc->of_node) gdev->dev.of_node = gc->of_node; else gc->of_node = gdev->dev.of_node; - if (gdev->dev.of_node) - gdev->dev.fwnode = of_fwnode_handle(gdev->dev.of_node); } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 083d7e1c7cde..2a3d562eb8c1 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -585,12 +585,9 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, if (!gdev) return -ENOMEM; gdev->dev.bus = &gpio_bus_type; + gdev->dev.parent = gc->parent; gdev->chip = gc; gc->gpiodev = gdev; - if (gc->parent) { - gdev->dev.parent = gc->parent; - gdev->dev.of_node = gc->parent->of_node; - } of_gpio_dev_init(gc, gdev); @@ -4212,11 +4209,13 @@ EXPORT_SYMBOL_GPL(gpiod_put_array); static int gpio_bus_match(struct device *dev, struct device_driver *drv) { + struct fwnode_handle *fwnode = dev_fwnode(dev); + /* * Only match if the fwnode doesn't already have a proper struct device * created for it. */ - if (dev->fwnode && dev->fwnode->dev != dev) + if (fwnode && fwnode->dev != dev) return 0; return 1; } From patchwork Thu Mar 4 20:12:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1447485 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Ds2F249dWz9sWP for ; Fri, 5 Mar 2021 07:16:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235414AbhCDUPU (ORCPT ); Thu, 4 Mar 2021 15:15:20 -0500 Received: from mga01.intel.com ([192.55.52.88]:6975 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231734AbhCDUOt (ORCPT ); Thu, 4 Mar 2021 15:14:49 -0500 IronPort-SDR: pmSfc2n60SSZetXu5lhD3mMRzc7XgTFFf7JhPMjwKHu9qsuFsjpZrvQO2ktQ/Gm6+hMa4844F7 jkICx3PHUT1g== X-IronPort-AV: E=McAfee;i="6000,8403,9913"; a="207217334" X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="207217334" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2021 12:13:03 -0800 IronPort-SDR: vnRBuhcgY1/n8X16CGB2tqmuUMhu5j4qSZynT7Q+4kaAYs3mq6wjEIvTJni88B1feN1uyn3l72 CTc2xY5aC1vA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="406981974" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga007.jf.intel.com with ESMTP; 04 Mar 2021 12:13:00 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id A52C83C1; Thu, 4 Mar 2021 22:13:00 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Mika Westerberg , Linus Walleij , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Marc Zyngier , Jonathan Corbet , Bartosz Golaszewski , Thomas Gleixner , "Rafael J. Wysocki" Subject: [PATCH v3 4/5] gpiolib: Introduce acpi_gpio_dev_init() and call it from core Date: Thu, 4 Mar 2021 22:12:52 +0200 Message-Id: <20210304201253.14652-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> References: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org In the ACPI case we may use the firmware node in the similar way as it's done for OF case. We may use that fwnode for other purposes in the future. Signed-off-by: Andy Shevchenko Reviewed-by: Linus Walleij --- drivers/gpio/gpiolib-acpi.c | 7 +++++++ drivers/gpio/gpiolib-acpi.h | 4 ++++ drivers/gpio/gpiolib.c | 1 + 3 files changed, 12 insertions(+) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 1aacd2a5a1fd..21750be9c489 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -1291,6 +1291,13 @@ void acpi_gpiochip_remove(struct gpio_chip *chip) kfree(acpi_gpio); } +void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) +{ + /* Set default fwnode to parent's one if present */ + if (gc->parent) + ACPI_COMPANION_SET(&gdev->dev, ACPI_COMPANION(gc->parent)); +} + static int acpi_gpio_package_count(const union acpi_object *obj) { const union acpi_object *element = obj->package.elements; diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h index e2edb632b2cc..e476558d9471 100644 --- a/drivers/gpio/gpiolib-acpi.h +++ b/drivers/gpio/gpiolib-acpi.h @@ -36,6 +36,8 @@ struct acpi_gpio_info { void acpi_gpiochip_add(struct gpio_chip *chip); void acpi_gpiochip_remove(struct gpio_chip *chip); +void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev); + void acpi_gpiochip_request_interrupts(struct gpio_chip *chip); void acpi_gpiochip_free_interrupts(struct gpio_chip *chip); @@ -58,6 +60,8 @@ int acpi_gpio_count(struct device *dev, const char *con_id); static inline void acpi_gpiochip_add(struct gpio_chip *chip) { } static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { } +static inline void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) { } + static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 2a3d562eb8c1..46ab1ce67ba0 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -590,6 +590,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, gc->gpiodev = gdev; of_gpio_dev_init(gc, gdev); + acpi_gpio_dev_init(gc, gdev); gdev->id = ida_alloc(&gpio_ida, GFP_KERNEL); if (gdev->id < 0) { From patchwork Thu Mar 4 20:12:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1447487 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Ds2F33tZpz9sWC for ; Fri, 5 Mar 2021 07:16:07 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237612AbhCDUPU (ORCPT ); Thu, 4 Mar 2021 15:15:20 -0500 Received: from mga04.intel.com ([192.55.52.120]:44585 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233551AbhCDUOx (ORCPT ); Thu, 4 Mar 2021 15:14:53 -0500 IronPort-SDR: asijAUb1AahOwtX07rKp69B7zVEzm3t7ylyGIhBv1CvJJU2KZNPmH2AOZo92qcejhaG5C7dLte WJcFF0Wm22gA== X-IronPort-AV: E=McAfee;i="6000,8403,9913"; a="185091351" X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="185091351" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2021 12:13:07 -0800 IronPort-SDR: 9V9Spu8TSrey2n+6zWrVR14WnL1sMNdUD3iA8RoccAiUCY8qsppNsN5VlUCNh4oCO4Pq6ziz9B 20HbvFwlVogw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,223,1610438400"; d="scan'208";a="368308601" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga003.jf.intel.com with ESMTP; 04 Mar 2021 12:13:04 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id B0DE63EA; Thu, 4 Mar 2021 22:13:00 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Mika Westerberg , Linus Walleij , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Marc Zyngier , Jonathan Corbet , Bartosz Golaszewski , Thomas Gleixner , "Rafael J. Wysocki" Subject: [PATCH v3 5/5] gpiolib: Reuse device's fwnode to create IRQ domain Date: Thu, 4 Mar 2021 22:12:53 +0200 Message-Id: <20210304201253.14652-6-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> References: <20210304201253.14652-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org When IRQ domain is created for an ACPI case, the name of it becomes unknown-%d since for now it utilizes of_node member only and doesn't consider fwnode case. Convert IRQ domain creation code to utilize fwnode instead. Before/After the change on Intel Galileo Gen 2 with two GPIO (IRQ) controllers: unknown-1 ==> \_SB.PCI0.GIP0.GPO unknown-2 ==> \_SB.NIO3 Signed-off-by: Andy Shevchenko --- drivers/gpio/gpiolib.c | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 46ab1ce67ba0..d7897a77c3fd 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1457,9 +1457,9 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc, struct lock_class_key *lock_key, struct lock_class_key *request_key) { + struct fwnode_handle *fwnode = dev_fwnode(&gc->gpiodev->dev); struct irq_chip *irqchip = gc->irq.chip; - const struct irq_domain_ops *ops = NULL; - struct device_node *np; + const struct irq_domain_ops *ops; unsigned int type; unsigned int i; @@ -1471,7 +1471,6 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc, return -EINVAL; } - np = gc->gpiodev->dev.of_node; type = gc->irq.default_type; /* @@ -1479,16 +1478,10 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc, * used to configure the interrupts, as you may end up with * conflicting triggers. Tell the user, and reset to NONE. */ - if (WARN(np && type != IRQ_TYPE_NONE, - "%s: Ignoring %u default trigger\n", np->full_name, type)) + if (WARN(fwnode && type != IRQ_TYPE_NONE, + "%pfw: Ignoring %u default trigger\n", fwnode, type)) type = IRQ_TYPE_NONE; - if (has_acpi_companion(gc->parent) && type != IRQ_TYPE_NONE) { - acpi_handle_warn(ACPI_HANDLE(gc->parent), - "Ignoring %u default trigger\n", type); - type = IRQ_TYPE_NONE; - } - if (gc->to_irq) chip_warn(gc, "to_irq is redefined in %s and you shouldn't rely on it\n", __func__); @@ -1504,15 +1497,10 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc, return ret; } else { /* Some drivers provide custom irqdomain ops */ - if (gc->irq.domain_ops) - ops = gc->irq.domain_ops; - - if (!ops) - ops = &gpiochip_domain_ops; - gc->irq.domain = irq_domain_add_simple(np, - gc->ngpio, - gc->irq.first, - ops, gc); + ops = gc->irq.domain_ops ?: &gpiochip_domain_ops; + gc->irq.domain = irq_domain_create_simple(fwnode, gc->ngpio, + gc->irq.first, + ops, gc); if (!gc->irq.domain) return -EINVAL; }