From patchwork Tue May 19 13:12:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1293314 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49RGWs4SNsz9sTj for ; Tue, 19 May 2020 23:12:41 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728945AbgESNMk (ORCPT ); Tue, 19 May 2020 09:12:40 -0400 Received: from mga14.intel.com ([192.55.52.115]:57663 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728929AbgESNMh (ORCPT ); Tue, 19 May 2020 09:12:37 -0400 IronPort-SDR: RU2AAmTyWDxFo4YQ66EEFki0LOFlvdZFpcF8gNwQLTW7hXsmD88GxuZPQ7Gb4iRtgkj88V0MOV 5FfnH3jxaKxQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2020 06:12:36 -0700 IronPort-SDR: GUoTArgsRTb1BoeozF4CG2bcQSS9ESAaeTdTS+/u8mwy6ehHacuWI5waxk/s/hk84gFGrpLk4B qFl30sfWkfVA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,410,1583222400"; d="scan'208";a="299566066" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga002.fm.intel.com with ESMTP; 19 May 2020 06:12:35 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 8CAE3D2; Tue, 19 May 2020 16:12:34 +0300 (EEST) From: Andy Shevchenko To: Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org Cc: Andy Shevchenko , Serge Semin Subject: [PATCH v3 1/4] gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration Date: Tue, 19 May 2020 16:12:30 +0300 Message-Id: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add missed acpi_gpiochip_free_interrupts() call when unregistering ports. While at it, drop extra check to call acpi_gpiochip_request_interrupts(). There is no need to have an additional check to call acpi_gpiochip_request_interrupts(). Even without any interrupts available the registered ACPI Event handlers can be useful for debugging purposes. Fixes: e6cb3486f5a1 ("gpio: dwapb: add gpio-signaled acpi event support") Signed-off-by: Andy Shevchenko Acked-by: Serge Semin Tested-by: Serge Semin --- v3: appended tags (Serge) drivers/gpio/gpio-dwapb.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index 8639c4a7f469..e5d844304f8d 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -505,26 +505,33 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, dwapb_configure_irqs(gpio, port, pp); err = gpiochip_add_data(&port->gc, port); - if (err) + if (err) { dev_err(gpio->dev, "failed to register gpiochip for port%d\n", port->idx); - else - port->is_registered = true; + return err; + } /* Add GPIO-signaled ACPI event support */ - if (pp->has_irq) - acpi_gpiochip_request_interrupts(&port->gc); + acpi_gpiochip_request_interrupts(&port->gc); - return err; + port->is_registered = true; + + return 0; } static void dwapb_gpio_unregister(struct dwapb_gpio *gpio) { unsigned int m; - for (m = 0; m < gpio->nr_ports; ++m) - if (gpio->ports[m].is_registered) - gpiochip_remove(&gpio->ports[m].gc); + for (m = 0; m < gpio->nr_ports; ++m) { + struct dwapb_gpio_port *port = &gpio->ports[m]; + + if (!port->is_registered) + continue; + + acpi_gpiochip_free_interrupts(&port->gc); + gpiochip_remove(&port->gc); + } } static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode, From patchwork Tue May 19 13:12:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1293315 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49RGWt17zpz9sTn for ; Tue, 19 May 2020 23:12:42 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728943AbgESNMk (ORCPT ); Tue, 19 May 2020 09:12:40 -0400 Received: from mga02.intel.com ([134.134.136.20]:10267 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728945AbgESNMi (ORCPT ); Tue, 19 May 2020 09:12:38 -0400 IronPort-SDR: 0YmVRXfBSuxxeea/Nkae2tVCwVaSNT+VwST+Z22eaDE8WccEAixqY3I8EmaPtix2PpcBmN9dw6 zX6z9jpkk+jg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2020 06:12:37 -0700 IronPort-SDR: GXyJHo0OZg+0iA1K6TGdWhCVLUn45IR1AkhcYU7rDi/zv6DEers5bhVSedogKpWnGP8JoNKq1q rDuBfeCTpTZA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,410,1583222400"; d="scan'208";a="439613509" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga005.jf.intel.com with ESMTP; 19 May 2020 06:12:35 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 9BA24BD; Tue, 19 May 2020 16:12:34 +0300 (EEST) From: Andy Shevchenko To: Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org Cc: Andy Shevchenko , Serge Semin Subject: [PATCH v3 2/4] gpio: dwapb: avoid error message for optional IRQ Date: Tue, 19 May 2020 16:12:31 +0300 Message-Id: <20200519131233.59032-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> References: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org platform_get_irq() will generate an error message if the requested IRQ is not present. Use platform_get_irq_optional() to avoid the error message being generated. Signed-off-by: Andy Shevchenko Acked-by: Serge Semin Tested-by: Serge Semin Reviewed-by: Serge Semin --- v3: appended tags (Serge) drivers/gpio/gpio-dwapb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index e5d844304f8d..944dae80d687 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -549,7 +549,7 @@ static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode, if (np) pp->irq[j] = of_irq_get(np, j); else if (has_acpi_companion(dev)) - pp->irq[j] = platform_get_irq(to_platform_device(dev), j); + pp->irq[j] = platform_get_irq_optional(to_platform_device(dev), j); if (pp->irq[j] >= 0) pp->has_irq = true; From patchwork Tue May 19 13:12:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1293312 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49RGWs1r6Yz9sTd for ; Tue, 19 May 2020 23:12:41 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728845AbgESNMj (ORCPT ); Tue, 19 May 2020 09:12:39 -0400 Received: from mga02.intel.com ([134.134.136.20]:10267 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728954AbgESNMi (ORCPT ); Tue, 19 May 2020 09:12:38 -0400 IronPort-SDR: IF/wTzaU6rNuyF+MWdcCXhoQMPk7gBNKKIMEGB8UBNfSyIxLGXJYnO/zf8HExSLMyogHb1oSdS lVeZ2/l957KQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2020 06:12:37 -0700 IronPort-SDR: 3yjeVBPOeSPga8QLAeqkXpib26FpwWCh53goDAoQUCfyHmaum4RROKsAH5ccm9KI/1WZ4IlP9I jtptPSJQleGw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,410,1583222400"; d="scan'208";a="439613510" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga005.jf.intel.com with ESMTP; 19 May 2020 06:12:35 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id A9AD919E; Tue, 19 May 2020 16:12:34 +0300 (EEST) From: Andy Shevchenko To: Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org Cc: Andy Shevchenko , Serge Semin Subject: [PATCH v3 3/4] gpio: dwapb: Don't use IRQ 0 as valid Linux interrupt Date: Tue, 19 May 2020 16:12:32 +0300 Message-Id: <20200519131233.59032-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> References: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org IRQ 0 is not valid in Linux interrupt number space. Refactor the code with this kept in mind. Signed-off-by: Andy Shevchenko Acked-by: Serge Semin Tested-by: Serge Semin --- v3: appended tags (Serge) drivers/gpio/gpio-dwapb.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index 944dae80d687..d3765672c42b 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -417,7 +417,7 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio, int i; for (i = 0; i < pp->ngpio; i++) { - if (pp->irq[i] >= 0) + if (pp->irq[i]) irq_set_chained_handler_and_data(pp->irq[i], dwapb_irq_handler, gpio); } @@ -538,20 +538,20 @@ static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode, struct dwapb_port_property *pp) { struct device_node *np = NULL; - int j; + int irq = -ENXIO, j; if (fwnode_property_read_bool(fwnode, "interrupt-controller")) np = to_of_node(fwnode); for (j = 0; j < pp->ngpio; j++) { - pp->irq[j] = -ENXIO; - if (np) - pp->irq[j] = of_irq_get(np, j); + irq = of_irq_get(np, j); else if (has_acpi_companion(dev)) - pp->irq[j] = platform_get_irq_optional(to_platform_device(dev), j); + irq = platform_get_irq_optional(to_platform_device(dev), j); + if (irq > 0) + pp->irq[j] = irq; - if (pp->irq[j] >= 0) + if (pp->irq[j]) pp->has_irq = true; } From patchwork Tue May 19 13:12:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1293311 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49RGWr0TdRz9sT8 for ; Tue, 19 May 2020 23:12:40 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728958AbgESNMi (ORCPT ); Tue, 19 May 2020 09:12:38 -0400 Received: from mga14.intel.com ([192.55.52.115]:57663 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728943AbgESNMh (ORCPT ); Tue, 19 May 2020 09:12:37 -0400 IronPort-SDR: B4K+W8etJxGyy4hcPrS2jOR+yfTWZILN124gNbN1ynkFkxQn96oKKEJd5Bsw+dwfOUHXNWVHW3 QhAGE1CDGvLQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2020 06:12:37 -0700 IronPort-SDR: lKMBbY1m2wyM1LVTk34zsGak6nW8W8vtDRdSeJOdvIrRr7Nus7CAjYFiZf2CzMSSgLeybkcVwx oS/J0m0yu07A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,410,1583222400"; d="scan'208";a="411628739" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga004.jf.intel.com with ESMTP; 19 May 2020 06:12:35 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id B3A5B1D6; Tue, 19 May 2020 16:12:34 +0300 (EEST) From: Andy Shevchenko To: Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org Cc: Andy Shevchenko , Lee Jones , Serge Semin Subject: [PATCH v3 4/4] gpio: dwapb: Remove unneeded has_irq member in struct dwapb_port_property Date: Tue, 19 May 2020 16:12:33 +0300 Message-Id: <20200519131233.59032-4-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> References: <20200519131233.59032-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org has_irq member of struct dwapb_port_property is used only in one place, so, make it local test instead and remove from the structure. This local test is using memchr_inv() which is quite efficient in comparison to the original loop and possible little overhead can be neglected. Signed-off-by: Andy Shevchenko Acked-by: Lee Jones Acked-by: Serge Semin Tested-by: Serge Semin --- v3: appended tags (Serge, Lee) drivers/gpio/gpio-dwapb.c | 14 +++++++------- drivers/mfd/intel_quark_i2c_gpio.c | 1 - include/linux/platform_data/gpio-dwapb.h | 1 - 3 files changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index d3765672c42b..1d8d55bd63aa 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -366,6 +366,11 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio, irq_hw_number_t hwirq; int err, i; + if (memchr_inv(pp->irq, 0, sizeof(pp->irq)) == NULL) { + dev_warn(gpio->dev, "no IRQ for port%d\n", pp->idx); + return; + } + gpio->domain = irq_domain_create_linear(fwnode, ngpio, &irq_generic_chip_ops, gpio); if (!gpio->domain) @@ -501,7 +506,8 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, if (pp->idx == 0) port->gc.set_config = dwapb_gpio_set_config; - if (pp->has_irq) + /* Only port A can provide interrupts in all configurations of the IP */ + if (pp->idx == 0) dwapb_configure_irqs(gpio, port, pp); err = gpiochip_add_data(&port->gc, port); @@ -550,13 +556,7 @@ static void dwapb_get_irq(struct device *dev, struct fwnode_handle *fwnode, irq = platform_get_irq_optional(to_platform_device(dev), j); if (irq > 0) pp->irq[j] = irq; - - if (pp->irq[j]) - pp->has_irq = true; } - - if (!pp->has_irq) - dev_warn(dev, "no irq for port%d\n", pp->idx); } static struct dwapb_platform_data *dwapb_gpio_get_pdata(struct device *dev) diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c index 41326b48da55..84ca7902e1df 100644 --- a/drivers/mfd/intel_quark_i2c_gpio.c +++ b/drivers/mfd/intel_quark_i2c_gpio.c @@ -216,7 +216,6 @@ static int intel_quark_gpio_setup(struct pci_dev *pdev, struct mfd_cell *cell) pdata->properties->ngpio = INTEL_QUARK_MFD_NGPIO; pdata->properties->gpio_base = INTEL_QUARK_MFD_GPIO_BASE; pdata->properties->irq[0] = pdev->irq; - pdata->properties->has_irq = true; pdata->properties->irq_shared = true; cell->platform_data = pdata; diff --git a/include/linux/platform_data/gpio-dwapb.h b/include/linux/platform_data/gpio-dwapb.h index 3c606c450d05..ff1be737bad6 100644 --- a/include/linux/platform_data/gpio-dwapb.h +++ b/include/linux/platform_data/gpio-dwapb.h @@ -12,7 +12,6 @@ struct dwapb_port_property { unsigned int ngpio; unsigned int gpio_base; int irq[32]; - bool has_irq; bool irq_shared; };