From patchwork Tue Jul 10 15:18:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 10517159 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5EA126032A for ; Tue, 10 Jul 2018 15:21:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4AC0629262 for ; Tue, 10 Jul 2018 15:21:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4854629232; Tue, 10 Jul 2018 15:21:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 418A2292BE for ; Tue, 10 Jul 2018 15:21:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=uFgxCl1sD0eNGL6YAT6UOYc+9mx3Dh9lcRoJawZnliw=; b=p9JOFc1FcCTrNqQleDKUP7luTU EwwnuyuEIjffj8iCEnTsSNx7ugcGy58jQZ7670u1HFVTCWuK2XzflneTJOn80xA+yAp1plKVPy6a9 Ll/s4/V9Ka8pNQguQ5xseFzS2mGTLFdY1DSWWNMjrLe6O5I/6mbWHV2DiXWCr0y6BvDA6ZmN654vF q2X1WmeIdYdQn1Gb5z7bUCfsyLOkKeNf/tZT/nIEXRatIKh7uJRZaBoNXSaNS8p6pQh+Dsk5NMFS6 aY177QmgFwT8kksOpA87fVWKPUDNCYXuu0Uswy7R2x+YS1BlAPAvMNKCjXhNKh+HMDaZVxvvb0uTZ 8V5SF5UA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fcuS4-0002e5-Oc for patchwork-linux-mediatek@patchwork.kernel.org; Tue, 10 Jul 2018 15:21:16 +0000 Received: from mout.kundenserver.de ([217.72.192.75]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fcuRv-0002RU-BK; Tue, 10 Jul 2018 15:21:13 +0000 Received: from wuerfel.lan ([46.223.138.35]) by mrelayeu.kundenserver.de (mreue105 [212.227.15.145]) with ESMTPA (Nemesis) id 0LqD3Y-1gGNzW3VD6-00dl2u; Tue, 10 Jul 2018 17:20:50 +0200 From: Arnd Bergmann To: Linus Walleij , Greg Kroah-Hartman Subject: [PATCH 2/2] staging: mt7621-gpio: remove driver Date: Tue, 10 Jul 2018 17:18:48 +0200 Message-Id: <20180710151915.2282622-2-arnd@arndb.de> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20180710151915.2282622-1-arnd@arndb.de> References: <20180710151915.2282622-1-arnd@arndb.de> X-Provags-ID: V03:K1:6bfxg8T33khO2egeUlFOYeveYbpFZnZ5d0De/k1mtts3hkCgHYS +BwQ2UKyiJB5BvVhLvzwlS2da+4mM3RhmrHwtScAbayyy4cXq6/5VgVvafDxI7JPM/64VK6 BB5wrYv2OfVuV86yobXRNPz4g8nRpAeCzyH//Bccsk+bcyPEZtcJObYgdH3b01pxbWraknX KzWEWOCxKvZkNWt2u5NSQ== X-UI-Out-Filterresults: notjunk:1; V01:K0:KSReERMPq1o=:2AY0pWPxAcP/kM/2n2TJ4L m3AJUTXdShmrRb/mQZ/OMuIvDeYvoXIkJrOOFSTiVXHMIyQOkZ5vKEa+Z45lCLNNesZbxEC7+ /u8SzKz+y/wQL5TWu2lEegAs3KqaZ5pwxndLwc72yY5aWtY1jF3UCT9ljTHqhlbmGqmPa1xEU UPeNpLzdS3KGE9BIbKOOgxuMRSJNuw8QHbGmd2OCInfatba7o0+O9ztpIA5DBz7I7W4ziuQRd dJBZtUszjnHcCWG6UYEiw5DMY1sS8FMkW2+p0yQn/rMbUdTkwaaqCarN+QBPJ+mSCaj2+PfYu DACmOlbbwYPm96krLihzC/6ZKozqyntjAzq8p+v4/6mpv708sWAglVehNaFBN91UjRPnnNgAL uvzxzDcxK5OwypNpvrxM6lIIWDhYPWvKbi6SP5b/Ee84/4rVPpIWNYwVKwCaDnZ7+18bvEg/L 9SD1Nm6EdnavHFKboF4W72uFSFQ+6EdQyfG1gV4pcL8pYaBfSR4Nd5j9aeoHzcfCs5pjxy3cA 6i+HGsBuREaMvbMP4QFgUga76rie5HHa3Ck4JeCKqM2dTINUYrkwpX3B7Ud86nJqSJ1gBADmi NTUHGbq+QQEM3nMDBwNPjGNvsWTLZ/qIg6r+5dcfbgdLZIowPYYFWXn0dvgJ1KnNXIVgAdBv3 zSj9qDdz+OkSm8FroTN6KCLjzL/ajcRrFTrI5vgUAwmlyOLBPjFDMgENBJKMS7OJjwLc= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180710_082107_690818_17C85F2A X-CRM114-Status: GOOD ( 22.41 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Arnd Bergmann , linux-kernel@vger.kernel.org, NeilBrown , Sergio Paracuellos , linux-mediatek@lists.infradead.org, Matthias Brugger , linux-arm-kernel@lists.infradead.org, John Crispin MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The gpio-mt7621 driver has graduated out of staging and got accepted into the gpio tree. Since they both use the same Kconfig symbol, we could run into conflicts, e.g. I got this failure when the staging driver got enabled with the other one being unavailable but using the same Kconfig symbol: drivers/gpio/gpio-mt7621.c: In function 'mediatek_gpio_bank_probe': drivers/gpio/gpio-mt7621.c:228:10: error: 'struct gpio_chip' has no member named 'of_node' rg->chip.of_node = node; ^ drivers/gpio/gpio-mt7621.c:243:10: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells' rg->chip.of_gpio_n_cells = 2; ^ drivers/gpio/gpio-mt7621.c:244:10: error: 'struct gpio_chip' has no member named 'of_xlate' rg->chip.of_xlate = mediatek_gpio_xlate; It would be trivial to rename the Kconfig symbol to avoid that problem, but there is also seems to be little value in keeping the staging driver around now. Fixes: 4ba9c3afda41 ("gpio: mt7621: Add a driver for MT7621") Signed-off-by: Arnd Bergmann --- drivers/staging/Kconfig | 2 - drivers/staging/Makefile | 1 - drivers/staging/mt7621-gpio/Kconfig | 8 - drivers/staging/mt7621-gpio/Makefile | 3 - drivers/staging/mt7621-gpio/TODO | 3 - drivers/staging/mt7621-gpio/gpio-mt7621.c | 331 --------------------- .../staging/mt7621-gpio/mediatek,mt7621-gpio.txt | 35 --- 7 files changed, 383 deletions(-) delete mode 100644 drivers/staging/mt7621-gpio/Kconfig delete mode 100644 drivers/staging/mt7621-gpio/Makefile delete mode 100644 drivers/staging/mt7621-gpio/TODO delete mode 100644 drivers/staging/mt7621-gpio/gpio-mt7621.c delete mode 100644 drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 9339af2fb51e..bbb0232c7f8e 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -110,8 +110,6 @@ source "drivers/staging/pi433/Kconfig" source "drivers/staging/mt7621-pinctrl/Kconfig" -source "drivers/staging/mt7621-gpio/Kconfig" - source "drivers/staging/mt7621-spi/Kconfig" source "drivers/staging/mt7621-dma/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index aa40b1f4cea4..9b381e037e54 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -46,7 +46,6 @@ obj-$(CONFIG_DRM_VBOXVIDEO) += vboxvideo/ obj-$(CONFIG_PI433) += pi433/ obj-$(CONFIG_SOC_MT7621) += mt7621-pci/ obj-$(CONFIG_SOC_MT7621) += mt7621-pinctrl/ -obj-$(CONFIG_SOC_MT7621) += mt7621-gpio/ obj-$(CONFIG_SOC_MT7621) += mt7621-spi/ obj-$(CONFIG_SOC_MT7621) += mt7621-dma/ obj-$(CONFIG_SOC_MT7621) += mt7621-mmc/ diff --git a/drivers/staging/mt7621-gpio/Kconfig b/drivers/staging/mt7621-gpio/Kconfig deleted file mode 100644 index 5485dd2d9b61..000000000000 --- a/drivers/staging/mt7621-gpio/Kconfig +++ /dev/null @@ -1,8 +0,0 @@ -config GPIO_MT7621 - bool "Mediatek MT7621 GPIO Support" - depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST - select GPIO_GENERIC - select GPIOLIB_IRQCHIP - select ARCH_REQUIRE_GPIOLIB - help - Say yes here to support the Mediatek MT7621 SoC GPIO device diff --git a/drivers/staging/mt7621-gpio/Makefile b/drivers/staging/mt7621-gpio/Makefile deleted file mode 100644 index e269ab1b8717..000000000000 --- a/drivers/staging/mt7621-gpio/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -obj-$(CONFIG_GPIO_MT7621) += gpio-mt7621.o - -ccflags-y += -I$(srctree)/$(src)/include diff --git a/drivers/staging/mt7621-gpio/TODO b/drivers/staging/mt7621-gpio/TODO deleted file mode 100644 index 674930a10716..000000000000 --- a/drivers/staging/mt7621-gpio/TODO +++ /dev/null @@ -1,3 +0,0 @@ -- general code review and clean up - -Cc: NeilBrown diff --git a/drivers/staging/mt7621-gpio/gpio-mt7621.c b/drivers/staging/mt7621-gpio/gpio-mt7621.c deleted file mode 100644 index d7256b56e621..000000000000 --- a/drivers/staging/mt7621-gpio/gpio-mt7621.c +++ /dev/null @@ -1,331 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2009-2011 Gabor Juhos - * Copyright (C) 2013 John Crispin - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define MTK_BANK_CNT 3 -#define MTK_BANK_WIDTH 32 - -#define GPIO_BANK_WIDE 0x04 -#define GPIO_REG_CTRL 0x00 -#define GPIO_REG_POL 0x10 -#define GPIO_REG_DATA 0x20 -#define GPIO_REG_DSET 0x30 -#define GPIO_REG_DCLR 0x40 -#define GPIO_REG_REDGE 0x50 -#define GPIO_REG_FEDGE 0x60 -#define GPIO_REG_HLVL 0x70 -#define GPIO_REG_LLVL 0x80 -#define GPIO_REG_STAT 0x90 -#define GPIO_REG_EDGE 0xA0 - -struct mtk_gc { - struct gpio_chip chip; - spinlock_t lock; - int bank; - u32 rising; - u32 falling; - u32 hlevel; - u32 llevel; -}; - -/** - * struct mtk_data - state container for - * data of the platform driver. It is 3 - * separate gpio-chip each one with its - * own irq_chip. - * @dev: device instance - * @gpio_membase: memory base address - * @gpio_irq: irq number from the device tree - * @gc_map: array of the gpio chips - */ -struct mtk_data { - struct device *dev; - void __iomem *gpio_membase; - int gpio_irq; - struct mtk_gc gc_map[MTK_BANK_CNT]; -}; - -static inline struct mtk_gc * -to_mediatek_gpio(struct gpio_chip *chip) -{ - return container_of(chip, struct mtk_gc, chip); -} - -static inline void -mtk_gpio_w32(struct mtk_gc *rg, u32 offset, u32 val) -{ - struct gpio_chip *gc = &rg->chip; - struct mtk_data *gpio_data = gpiochip_get_data(gc); - - offset = (rg->bank * GPIO_BANK_WIDE) + offset; - gc->write_reg(gpio_data->gpio_membase + offset, val); -} - -static inline u32 -mtk_gpio_r32(struct mtk_gc *rg, u32 offset) -{ - struct gpio_chip *gc = &rg->chip; - struct mtk_data *gpio_data = gpiochip_get_data(gc); - - offset = (rg->bank * GPIO_BANK_WIDE) + offset; - return gc->read_reg(gpio_data->gpio_membase + offset); -} - -static irqreturn_t -mediatek_gpio_irq_handler(int irq, void *data) -{ - struct gpio_chip *gc = data; - struct mtk_gc *rg = to_mediatek_gpio(gc); - irqreturn_t ret = IRQ_NONE; - unsigned long pending; - int bit; - - pending = mtk_gpio_r32(rg, GPIO_REG_STAT); - - for_each_set_bit(bit, &pending, MTK_BANK_WIDTH) { - u32 map = irq_find_mapping(gc->irq.domain, bit); - - generic_handle_irq(map); - mtk_gpio_w32(rg, GPIO_REG_STAT, BIT(bit)); - ret |= IRQ_HANDLED; - } - - return ret; -} - -static void -mediatek_gpio_irq_unmask(struct irq_data *d) -{ - struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct mtk_gc *rg = to_mediatek_gpio(gc); - int pin = d->hwirq; - unsigned long flags; - u32 rise, fall, high, low; - - spin_lock_irqsave(&rg->lock, flags); - rise = mtk_gpio_r32(rg, GPIO_REG_REDGE); - fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE); - high = mtk_gpio_r32(rg, GPIO_REG_HLVL); - low = mtk_gpio_r32(rg, GPIO_REG_LLVL); - mtk_gpio_w32(rg, GPIO_REG_REDGE, rise | (BIT(pin) & rg->rising)); - mtk_gpio_w32(rg, GPIO_REG_FEDGE, fall | (BIT(pin) & rg->falling)); - mtk_gpio_w32(rg, GPIO_REG_HLVL, high | (BIT(pin) & rg->hlevel)); - mtk_gpio_w32(rg, GPIO_REG_LLVL, low | (BIT(pin) & rg->llevel)); - spin_unlock_irqrestore(&rg->lock, flags); -} - -static void -mediatek_gpio_irq_mask(struct irq_data *d) -{ - struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct mtk_gc *rg = to_mediatek_gpio(gc); - int pin = d->hwirq; - unsigned long flags; - u32 rise, fall, high, low; - - spin_lock_irqsave(&rg->lock, flags); - rise = mtk_gpio_r32(rg, GPIO_REG_REDGE); - fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE); - high = mtk_gpio_r32(rg, GPIO_REG_HLVL); - low = mtk_gpio_r32(rg, GPIO_REG_LLVL); - mtk_gpio_w32(rg, GPIO_REG_FEDGE, fall & ~BIT(pin)); - mtk_gpio_w32(rg, GPIO_REG_REDGE, rise & ~BIT(pin)); - mtk_gpio_w32(rg, GPIO_REG_HLVL, high & ~BIT(pin)); - mtk_gpio_w32(rg, GPIO_REG_LLVL, low & ~BIT(pin)); - spin_unlock_irqrestore(&rg->lock, flags); -} - -static int -mediatek_gpio_irq_type(struct irq_data *d, unsigned int type) -{ - struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct mtk_gc *rg = to_mediatek_gpio(gc); - int pin = d->hwirq; - u32 mask = BIT(pin); - - if (type == IRQ_TYPE_PROBE) { - if ((rg->rising | rg->falling | - rg->hlevel | rg->llevel) & mask) - return 0; - - type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING; - } - - rg->rising &= ~mask; - rg->falling &= ~mask; - rg->hlevel &= ~mask; - rg->llevel &= ~mask; - - switch (type & IRQ_TYPE_SENSE_MASK) { - case IRQ_TYPE_EDGE_BOTH: - rg->rising |= mask; - rg->falling |= mask; - break; - case IRQ_TYPE_EDGE_RISING: - rg->rising |= mask; - break; - case IRQ_TYPE_EDGE_FALLING: - rg->falling |= mask; - break; - case IRQ_TYPE_LEVEL_HIGH: - rg->hlevel |= mask; - break; - case IRQ_TYPE_LEVEL_LOW: - rg->llevel |= mask; - break; - } - - return 0; -} - -static struct irq_chip mediatek_gpio_irq_chip = { - .irq_unmask = mediatek_gpio_irq_unmask, - .irq_mask = mediatek_gpio_irq_mask, - .irq_mask_ack = mediatek_gpio_irq_mask, - .irq_set_type = mediatek_gpio_irq_type, -}; - -static int -mediatek_gpio_xlate(struct gpio_chip *chip, - const struct of_phandle_args *spec, u32 *flags) -{ - int gpio = spec->args[0]; - struct mtk_gc *rg = to_mediatek_gpio(chip); - - if (rg->bank != gpio / MTK_BANK_WIDTH) - return -EINVAL; - - if (flags) - *flags = spec->args[1]; - - return gpio % MTK_BANK_WIDTH; -} - -static int -mediatek_gpio_bank_probe(struct platform_device *pdev, - struct device_node *node, int bank) -{ - struct mtk_data *gpio = dev_get_drvdata(&pdev->dev); - struct mtk_gc *rg; - void __iomem *dat, *set, *ctrl, *diro; - int ret; - - rg = &gpio->gc_map[bank]; - memset(rg, 0, sizeof(*rg)); - - spin_lock_init(&rg->lock); - rg->chip.of_node = node; - rg->bank = bank; - - dat = gpio->gpio_membase + GPIO_REG_DATA + (rg->bank * GPIO_BANK_WIDE); - set = gpio->gpio_membase + GPIO_REG_DSET + (rg->bank * GPIO_BANK_WIDE); - ctrl = gpio->gpio_membase + GPIO_REG_DCLR + (rg->bank * GPIO_BANK_WIDE); - diro = gpio->gpio_membase + GPIO_REG_CTRL + (rg->bank * GPIO_BANK_WIDE); - - ret = bgpio_init(&rg->chip, &pdev->dev, 4, - dat, set, ctrl, diro, NULL, 0); - if (ret) { - dev_err(&pdev->dev, "bgpio_init() failed\n"); - return ret; - } - - rg->chip.of_gpio_n_cells = 2; - rg->chip.of_xlate = mediatek_gpio_xlate; - rg->chip.label = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s-bank%d", - dev_name(&pdev->dev), bank); - - ret = devm_gpiochip_add_data(&pdev->dev, &rg->chip, gpio); - if (ret < 0) { - dev_err(&pdev->dev, "Could not register gpio %d, ret=%d\n", - rg->chip.ngpio, ret); - return ret; - } - - if (gpio->gpio_irq) { - /* - * Manually request the irq here instead of passing - * a flow-handler to gpiochip_set_chained_irqchip, - * because the irq is shared. - */ - ret = devm_request_irq(&pdev->dev, gpio->gpio_irq, - mediatek_gpio_irq_handler, IRQF_SHARED, - rg->chip.label, &rg->chip); - - if (ret) { - dev_err(&pdev->dev, "Error requesting IRQ %d: %d\n", - gpio->gpio_irq, ret); - return ret; - } - - ret = gpiochip_irqchip_add(&rg->chip, &mediatek_gpio_irq_chip, - 0, handle_simple_irq, IRQ_TYPE_NONE); - if (ret) { - dev_err(&pdev->dev, "failed to add gpiochip_irqchip\n"); - return ret; - } - - gpiochip_set_chained_irqchip(&rg->chip, &mediatek_gpio_irq_chip, - gpio->gpio_irq, NULL); - } - - /* set polarity to low for all gpios */ - mtk_gpio_w32(rg, GPIO_REG_POL, 0); - - dev_info(&pdev->dev, "registering %d gpios\n", rg->chip.ngpio); - - return 0; -} - -static int -mediatek_gpio_probe(struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - struct mtk_data *gpio_data; - int i; - - gpio_data = devm_kzalloc(&pdev->dev, sizeof(*gpio_data), GFP_KERNEL); - if (!gpio_data) - return -ENOMEM; - - gpio_data->gpio_membase = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(gpio_data->gpio_membase)) - return PTR_ERR(gpio_data->gpio_membase); - - gpio_data->gpio_irq = irq_of_parse_and_map(np, 0); - gpio_data->dev = &pdev->dev; - platform_set_drvdata(pdev, gpio_data); - mediatek_gpio_irq_chip.name = dev_name(&pdev->dev); - - for (i = 0; i < MTK_BANK_CNT; i++) - mediatek_gpio_bank_probe(pdev, np, i); - - return 0; -} - -static const struct of_device_id mediatek_gpio_match[] = { - { .compatible = "mediatek,mt7621-gpio" }, - {}, -}; -MODULE_DEVICE_TABLE(of, mediatek_gpio_match); - -static struct platform_driver mediatek_gpio_driver = { - .probe = mediatek_gpio_probe, - .driver = { - .name = "mt7621_gpio", - .of_match_table = mediatek_gpio_match, - }, -}; - -builtin_platform_driver(mediatek_gpio_driver); diff --git a/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt b/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt deleted file mode 100644 index ba455589f869..000000000000 --- a/drivers/staging/mt7621-gpio/mediatek,mt7621-gpio.txt +++ /dev/null @@ -1,35 +0,0 @@ -Mediatek MT7621 SoC GPIO controller bindings - -The IP core used inside these SoCs has 3 banks of 32 GPIOs each. -The registers of all the banks are interwoven inside one single IO range. -We load one GPIO controller instance per bank. Also the GPIO controller can receive -interrupts on any of the GPIOs, either edge or level. It then interrupts the CPU -using GIC INT12. - -Required properties for the top level node: -- #gpio-cells : Should be two. The first cell is the GPIO pin number and the - second cell specifies GPIO flags, as defined in . - Only the GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported. -- #interrupt-cells : Specifies the number of cells needed to encode an - interrupt. Should be 2. The first cell defines the interrupt number, - the second encodes the triger flags encoded as described in - Documentation/devicetree/bindings/interrupt-controller/interrupts.txt -- compatible: - - "mediatek,mt7621-gpio" for Mediatek controllers -- reg : Physical base address and length of the controller's registers -- interrupt-parent : phandle of the parent interrupt controller. -- interrupts : Interrupt specifier for the controllers interrupt. -- interrupt-controller : Mark the device node as an interrupt controller. -- gpio-controller : Marks the device node as a GPIO controller. - -Example: - gpio@600 { - #gpio-cells = <2>; - #interrupt-cells = <2>; - compatible = "mediatek,mt7621-gpio"; - gpio-controller; - interrupt-controller; - reg = <0x600 0x100>; - interrupt-parent = <&gic>; - interrupts = ; - };