From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AEA59C43612 for ; Sun, 13 Jan 2019 15:48:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7D82520657 for ; Sun, 13 Jan 2019 15:48:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=onstation.org header.i=@onstation.org header.b="L2ypAFEi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727001AbfAMPsn (ORCPT ); Sun, 13 Jan 2019 10:48:43 -0500 Received: from onstation.org ([52.200.56.107]:42682 "EHLO onstation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726711AbfAMPro (ORCPT ); Sun, 13 Jan 2019 10:47:44 -0500 Received: from localhost.localdomain (c-98-239-145-235.hsd1.wv.comcast.net [98.239.145.235]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: masneyb) by onstation.org (Postfix) with ESMTPSA id 87E3A16A; Sun, 13 Jan 2019 15:47:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=onstation.org; s=default; t=1547394463; bh=VL7iW6TAeo46fmtpcRGHemUwCRRiLpa3UALjEjkPb0w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L2ypAFEiDwK82Kp5XZTByqkcvC6FWGTJDJlcnFsp7wb5kh+djIoGgrysUehx2V/Rg bHcmZaQAZctJQBk72ruPXLe55eaw5PnKUNI/QJVgyfPSn2N8OViYPp54wkCiLtzEQP jts1h5HbbFw8/TfAPAt1nLJpm6IrUuo73GhLo6hs= From: Brian Masney To: linus.walleij@linaro.org, sboyd@kernel.org, bjorn.andersson@linaro.org, andy.gross@linaro.org Cc: marc.zyngier@arm.com, shawnguo@kernel.org, dianders@chromium.org, linux-gpio@vger.kernel.org, nicolas.dechesne@linaro.org, niklas.cassel@linaro.org, david.brown@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, thierry.reding@gmail.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v4 05/14] gpio: add irq domain activate/deactivate functions Date: Sun, 13 Jan 2019 10:47:07 -0500 Message-Id: <20190113154716.5145-6-masneyb@onstation.org> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190113154716.5145-1-masneyb@onstation.org> References: <20190113154716.5145-1-masneyb@onstation.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds the two new functions gpiochip_irq_domain_activate and gpiochip_irq_domain_deactivate that can be used as the activate and deactivate functions in the struct irq_domain_ops. This is for situations where only gpiochip_{lock,unlock}_as_irq needs to be called. SPMI and SSBI GPIO are two users that will initially use these functions. Signed-off-by: Brian Masney Suggested-by: Stephen Boyd Reviewed-by: Stephen Boyd --- Changes since v3: - Correct kernel doc syntax: 'struct &foo' -> '&struct foo' '&func' -> 'func()' drivers/gpio/gpiolib.c | 37 +++++++++++++++++++++++++++++++++++++ include/linux/gpio/driver.h | 5 +++++ 2 files changed, 42 insertions(+) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 1651d7f0a303..ca81252b97b9 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1775,6 +1775,43 @@ static const struct irq_domain_ops gpiochip_domain_ops = { .xlate = irq_domain_xlate_twocell, }; +/** + * gpiochip_irq_domain_activate() - Lock a GPIO to be used as an IRQ + * @domain: The IRQ domain used by this IRQ chip + * @data: Outermost irq_data associated with the IRQ + * @reserve: If set, only reserve an interrupt vector instead of assigning one + * + * This function is a wrapper that calls gpiochip_lock_as_irq() and is to be + * used as the activate function for the &struct irq_domain_ops. The host_data + * for the IRQ domain must be the &struct gpiochip. + */ +int gpiochip_irq_domain_activate(struct irq_domain *domain, + struct irq_data *data, bool reserve) +{ + struct gpio_chip *chip = domain->host_data; + + return gpiochip_lock_as_irq(chip, data->hwirq); +} +EXPORT_SYMBOL_GPL(gpiochip_irq_domain_activate); + +/** + * gpiochip_irq_domain_deactivate() - Unlock a GPIO used as an IRQ + * @domain: The IRQ domain used by this IRQ chip + * @data: Outermost irq_data associated with the IRQ + * + * This function is a wrapper that will call gpiochip_unlock_as_irq() and is to + * be used as the deactivate function for the &struct irq_domain_ops. The + * host_data for the IRQ domain must be the &struct gpiochip. + */ +void gpiochip_irq_domain_deactivate(struct irq_domain *domain, + struct irq_data *data) +{ + struct gpio_chip *chip = domain->host_data; + + return gpiochip_unlock_as_irq(chip, data->hwirq); +} +EXPORT_SYMBOL_GPL(gpiochip_irq_domain_deactivate); + static int gpiochip_to_irq(struct gpio_chip *chip, unsigned offset) { if (!gpiochip_irqchip_irq_valid(chip, offset)) diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 07cddbf45186..01497910f023 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -472,6 +472,11 @@ int gpiochip_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq); void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq); +int gpiochip_irq_domain_activate(struct irq_domain *domain, + struct irq_data *data, bool reserve); +void gpiochip_irq_domain_deactivate(struct irq_domain *domain, + struct irq_data *data); + void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip, struct irq_chip *irqchip, unsigned int parent_irq, -- 2.17.2