From patchwork Sat Sep 14 11:10:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Masney X-Patchwork-Id: 1162326 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; 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=onstation.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=onstation.org header.i=@onstation.org header.b="o+6zBu1h"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46VqYD2RKpz9sCJ for ; Sat, 14 Sep 2019 21:10:23 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728024AbfINLKW (ORCPT ); Sat, 14 Sep 2019 07:10:22 -0400 Received: from onstation.org ([52.200.56.107]:34970 "EHLO onstation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726313AbfINLKW (ORCPT ); Sat, 14 Sep 2019 07:10:22 -0400 Received: from localhost.localdomain (c-98-239-145-235.hsd1.wv.comcast.net [98.239.145.235]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: masneyb) by onstation.org (Postfix) with ESMTPSA id 503D03E8E0; Sat, 14 Sep 2019 11:10:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=onstation.org; s=default; t=1568459421; bh=Ta/dG53gYowg2PevPqyJILIa5gwt4OlLQ3fdBW1T1S4=; h=From:To:Cc:Subject:Date:From; b=o+6zBu1hhK9EZEE70OVLSMeD3hVBjVgrGmGGxZ9VW9xHZgaI2hCBr5Iz5YtCs1IFw fgBJjXR0QqZTWckcexC7pnRkSziRgEoGfwre6KC7V5AhtDpMDc+Ytzi8E7VtDT5WEo bMFy5edNN4hvWqIKhAGMVMmrl2ZCSHf8wRRN3AUQ= From: Brian Masney To: linus.walleij@linaro.org Cc: agross@kernel.org, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] qcom: ssbi-gpio: convert to hierarchical IRQ helpers in gpio core Date: Sat, 14 Sep 2019 07:10:10 -0400 Message-Id: <20190914111010.24384-1-masneyb@onstation.org> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Now that the GPIO core has support for hierarchical IRQ chips, convert Qualcomm's ssbi-gpio over to use these new helpers to reduce duplicated code across drivers. Signed-off-by: Brian Masney --- Linus: I've only compile tested this driver. Hopefully you have time to test this on your DragonBoard. drivers/pinctrl/qcom/Kconfig | 1 + drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c | 121 +++++++---------------- 2 files changed, 34 insertions(+), 88 deletions(-) diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig index 32fc2458b8eb..41fab621de1b 100644 --- a/drivers/pinctrl/qcom/Kconfig +++ b/drivers/pinctrl/qcom/Kconfig @@ -152,6 +152,7 @@ config PINCTRL_QCOM_SSBI_PMIC select PINMUX select PINCONF select GENERIC_PINCONF + select GPIOLIB_IRQCHIP select IRQ_DOMAIN_HIERARCHY help This is the pinctrl, pinmux, pinconf and gpiolib driver for the diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c index c1f7d0799ebe..dca86886b1f9 100644 --- a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c +++ b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c @@ -56,7 +56,6 @@ /** * struct pm8xxx_pin_data - dynamic configuration for a pin * @reg: address of the control register - * @irq: IRQ from the PMIC interrupt controller * @power_source: logical selected voltage source, mapping in static data * is used translate to register values * @mode: operating mode for the pin (input/output) @@ -72,7 +71,6 @@ */ struct pm8xxx_pin_data { unsigned reg; - int irq; u8 power_source; u8 mode; bool open_drain; @@ -93,9 +91,6 @@ struct pm8xxx_gpio { struct pinctrl_desc desc; unsigned npins; - - struct fwnode_handle *fwnode; - struct irq_domain *domain; }; static const struct pinconf_generic_params pm8xxx_gpio_bindings[] = { @@ -491,13 +486,16 @@ static int pm8xxx_gpio_get(struct gpio_chip *chip, unsigned offset) { struct pm8xxx_gpio *pctrl = gpiochip_get_data(chip); struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; + int ret, irq; bool state; - int ret; - if (pin->mode == PM8XXX_GPIO_MODE_OUTPUT) { - ret = pin->output_value; - } else if (pin->irq >= 0) { - ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state); + if (pin->mode == PM8XXX_GPIO_MODE_OUTPUT) + return pin->output_value; + + irq = chip->to_irq(chip, offset); + if (irq >= 0) { + ret = irq_get_irqchip_state(irq, IRQCHIP_STATE_LINE_LEVEL, + &state); if (!ret) ret = !!state; } else @@ -535,37 +533,6 @@ static int pm8xxx_gpio_of_xlate(struct gpio_chip *chip, } -static int pm8xxx_gpio_to_irq(struct gpio_chip *chip, unsigned offset) -{ - struct pm8xxx_gpio *pctrl = gpiochip_get_data(chip); - struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; - struct irq_fwspec fwspec; - int ret; - - fwspec.fwnode = pctrl->fwnode; - fwspec.param_count = 2; - fwspec.param[0] = offset + PM8XXX_GPIO_PHYSICAL_OFFSET; - fwspec.param[1] = IRQ_TYPE_EDGE_RISING; - - ret = irq_create_fwspec_mapping(&fwspec); - - /* - * Cache the IRQ since pm8xxx_gpio_get() needs this to get determine the - * line level. - */ - pin->irq = ret; - - return ret; -} - -static void pm8xxx_gpio_free(struct gpio_chip *chip, unsigned int offset) -{ - struct pm8xxx_gpio *pctrl = gpiochip_get_data(chip); - struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; - - pin->irq = -1; -} - #ifdef CONFIG_DEBUG_FS #include @@ -624,13 +591,11 @@ static void pm8xxx_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) #endif static const struct gpio_chip pm8xxx_gpio_template = { - .free = pm8xxx_gpio_free, .direction_input = pm8xxx_gpio_direction_input, .direction_output = pm8xxx_gpio_direction_output, .get = pm8xxx_gpio_get, .set = pm8xxx_gpio_set, .of_xlate = pm8xxx_gpio_of_xlate, - .to_irq = pm8xxx_gpio_to_irq, .dbg_show = pm8xxx_gpio_dbg_show, .owner = THIS_MODULE, }; @@ -712,43 +677,24 @@ static int pm8xxx_domain_translate(struct irq_domain *domain, return 0; } -static int pm8xxx_domain_alloc(struct irq_domain *domain, unsigned int virq, - unsigned int nr_irqs, void *data) +static unsigned int pm8xxx_child_offset_to_irq(struct gpio_chip *chip, + unsigned int offset) { - struct pm8xxx_gpio *pctrl = container_of(domain->host_data, - struct pm8xxx_gpio, chip); - struct irq_fwspec *fwspec = data; - struct irq_fwspec parent_fwspec; - irq_hw_number_t hwirq; - unsigned int type; - int ret, i; - - ret = pm8xxx_domain_translate(domain, fwspec, &hwirq, &type); - if (ret) - return ret; - - for (i = 0; i < nr_irqs; i++) - irq_domain_set_info(domain, virq + i, hwirq + i, - &pm8xxx_irq_chip, pctrl, handle_level_irq, - NULL, NULL); + return offset + PM8XXX_GPIO_PHYSICAL_OFFSET; +} - parent_fwspec.fwnode = domain->parent->fwnode; - parent_fwspec.param_count = 2; - parent_fwspec.param[0] = hwirq + 0xc0; - parent_fwspec.param[1] = fwspec->param[1]; +static int pm8xxx_child_to_parent_hwirq(struct gpio_chip *chip, + unsigned int child_hwirq, + unsigned int child_type, + unsigned int *parent_hwirq, + unsigned int *parent_type) +{ + *parent_hwirq = child_hwirq + 0xc0; + *parent_type = child_type; - return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, - &parent_fwspec); + return 0; } -static const struct irq_domain_ops pm8xxx_domain_ops = { - .activate = gpiochip_irq_domain_activate, - .alloc = pm8xxx_domain_alloc, - .deactivate = gpiochip_irq_domain_deactivate, - .free = irq_domain_free_irqs_common, - .translate = pm8xxx_domain_translate, -}; - static const struct of_device_id pm8xxx_gpio_of_match[] = { { .compatible = "qcom,pm8018-gpio", .data = (void *) 6 }, { .compatible = "qcom,pm8038-gpio", .data = (void *) 12 }, @@ -765,6 +711,7 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) struct irq_domain *parent_domain; struct device_node *parent_node; struct pinctrl_pin_desc *pins; + struct gpio_irq_chip *girq; struct pm8xxx_gpio *pctrl; int ret, i; @@ -800,7 +747,6 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) for (i = 0; i < pctrl->desc.npins; i++) { pin_data[i].reg = SSBI_REG_ADDR_GPIO(i); - pin_data[i].irq = -1; ret = pm8xxx_pin_populate(pctrl, &pin_data[i]); if (ret) @@ -841,19 +787,21 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) if (!parent_domain) return -ENXIO; - pctrl->fwnode = of_node_to_fwnode(pctrl->dev->of_node); - pctrl->domain = irq_domain_create_hierarchy(parent_domain, 0, - pctrl->chip.ngpio, - pctrl->fwnode, - &pm8xxx_domain_ops, - &pctrl->chip); - if (!pctrl->domain) - return -ENODEV; + girq = &pctrl->chip.irq; + girq->chip = &pm8xxx_irq_chip; + girq->default_type = IRQ_TYPE_NONE; + girq->handler = handle_level_irq; + girq->fwnode = of_node_to_fwnode(pctrl->dev->of_node); + girq->parent_domain = parent_domain; + girq->child_to_parent_hwirq = pm8xxx_child_to_parent_hwirq; + girq->populate_parent_fwspec = gpiochip_populate_parent_fwspec_fourcell; + girq->child_offset_to_irq = pm8xxx_child_offset_to_irq; + girq->child_irq_domain_ops.translate = pm8xxx_domain_translate; ret = gpiochip_add_data(&pctrl->chip, pctrl); if (ret) { dev_err(&pdev->dev, "failed register gpiochip\n"); - goto err_chip_add_data; + return ret; } /* @@ -883,8 +831,6 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) unregister_gpiochip: gpiochip_remove(&pctrl->chip); -err_chip_add_data: - irq_domain_remove(pctrl->domain); return ret; } @@ -894,7 +840,6 @@ static int pm8xxx_gpio_remove(struct platform_device *pdev) struct pm8xxx_gpio *pctrl = platform_get_drvdata(pdev); gpiochip_remove(&pctrl->chip); - irq_domain_remove(pctrl->domain); return 0; }