From patchwork Sat Sep 17 03:32:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianqun Xu X-Patchwork-Id: 12979019 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AEF1BC6FA90 for ; Sat, 17 Sep 2022 03:33:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4WMqPf8kaXeQMjkrXrV1NI4fjvMFfe0/BrvV8OBz3N4=; b=0amGzW7ZPHjryY 4wGxliBDejk4QqKxIGEUvqGwEEy/B86ZjeqGLIddxlWsBbkqNMPuMXI9o16u7pSh33hzkhoZnrzxL /H4pil/vJlTGz0Vwss33IEsZGWUxGVdwdWH0erXCcY9epCvatDcPjottp0Z+gDUxATds+Hmn4TRba jfG+AmJuLlVC2gGdwWJjcIgFljsgaj2qdPz0O5ts+RPDpUfZwpfgJW4XXeISOP9co5iY16emQf8VV W5x2np98M5bqbb3x8cMax9MBLsTKEtRsEjyVOHjkT9XDoUEx5uFl5WSDA++zVnTIdiU1kEGmj2WZx AJ36/No7843wT86seECg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oZOZV-002Lyv-Aq; Sat, 17 Sep 2022 03:32:49 +0000 Received: from mail-m11873.qiye.163.com ([115.236.118.73]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oZOZQ-002Luw-VW for linux-rockchip@lists.infradead.org; Sat, 17 Sep 2022 03:32:47 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m11873.qiye.163.com (Hmail) with ESMTPA id 6765A900499; Sat, 17 Sep 2022 11:32:40 +0800 (CST) From: Jianqun Xu To: jbx6244@gmail.com, heiko@sntech.de, linus.walleij@linaro.org, andriy.shevchenko@linux.intel.com Cc: brgl@bgdev.pl, linux-gpio@vger.kernel.org, linux-rockchip@lists.infradead.org, Jianqun Xu Subject: [PATCH v2 1/2] pinctrl: rockchip: find gpiochip by name from gpio module Date: Sat, 17 Sep 2022 11:32:38 +0800 Message-Id: <20220917033239.626597-2-jay.xu@rock-chips.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220917033239.626597-1-jay.xu@rock-chips.com> References: <20220917033239.626597-1-jay.xu@rock-chips.com> MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFJSktLSjdXWS1ZQUlXWQ8JGhUIEh9ZQVlDGEkZVk8eTxgfSB5IHkJISFUTARMWGhIXJB QOD1lXWRgSC1lBWU5DVUlJVUxVSkpPWVdZFhoPEhUdFFlBWU9LSFVKSktISkxVSktLVUtZBg++ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6MRA6HTo6Pj0tFBooCyoLKT8# I05PCSlVSlVKTU1ISENOTk1KS0pOVTMWGhIXVREaAlUDDjsJFBgQVhgTEgsIVRgUFkVZV1kSC1lB WU5DVUlJVUxVSkpPWVdZCAFZQU5ITko3Bg++ X-HM-Tid: 0a834981661d2eafkusn6765a900499 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220916_203245_234673_9329D784 X-CRM114-Status: GOOD ( 15.65 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Currently the pinctrl device acts as parent for the gpio devices for rockchip platform, the pinctrl driver probes first and then populate the gpio platform lastly. This patch makes the pinctrl to populate gpio platform firstly and then do probe after gpio probed successfully. And get gpiochips througth a find function by the gpio label. Signed-off-by: Jianqun Xu --- v2: - first version drivers/pinctrl/pinctrl-rockchip.c | 48 +++++++++++++++++++++++------- drivers/pinctrl/pinctrl-rockchip.h | 2 +- 2 files changed, 38 insertions(+), 12 deletions(-) diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index a91061f9c2ac..5b828798bfa5 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -2726,7 +2726,7 @@ static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, { struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); struct rockchip_pin_bank *bank = pin_to_bank(info, pin); - struct gpio_chip *gpio = &bank->gpio_chip; + struct gpio_chip *gpio = bank->gpio_chip; enum pin_config_param param; u32 arg; int i; @@ -2832,7 +2832,7 @@ static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, { struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); struct rockchip_pin_bank *bank = pin_to_bank(info, pin); - struct gpio_chip *gpio = &bank->gpio_chip; + struct gpio_chip *gpio = bank->gpio_chip; enum pin_config_param param = pinconf_to_config_param(*config); u16 arg; int rc; @@ -3289,18 +3289,29 @@ static int __maybe_unused rockchip_pinctrl_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(rockchip_pinctrl_dev_pm_ops, rockchip_pinctrl_suspend, rockchip_pinctrl_resume); +static int gpiochip_match_name(struct gpio_chip *gc, void *data) +{ + const char *name = data; + + return !strcmp(gc->label, name); +} + static int rockchip_pinctrl_probe(struct platform_device *pdev) { - struct rockchip_pinctrl *info; struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node, *node; + struct fwnode_handle *fwnode = dev_fwnode(dev); + struct rockchip_pinctrl *info; struct rockchip_pin_ctrl *ctrl; + struct device_node *np, *node; struct resource *res; void __iomem *base; - int ret; + int ret, i; - if (!dev->of_node) - return dev_err_probe(dev, -ENODEV, "device tree node not found\n"); + if (is_of_node(fwnode)) { + ret = of_platform_populate(np, NULL, NULL, NULL); + if (ret) + return dev_err_probe(dev, ret, "failed to register gpio device\n"); + } info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); if (!info) @@ -3358,11 +3369,26 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev) if (ret) return ret; - platform_set_drvdata(pdev, info); + for (i = 0; i < ctrl->nr_banks; i++) { + struct gpio_chip *gc; + struct rockchip_pin_bank *bank = &ctrl->pin_banks[i]; - ret = of_platform_populate(np, NULL, NULL, &pdev->dev); - if (ret) - return dev_err_probe(dev, ret, "failed to register gpio device\n"); + gc = gpiochip_find((void *)ctrl->pin_banks[i].name, gpiochip_match_name); + if (!gc) { + dev_err(dev, "fail to find gpiochip\n"); + return ret; + } + + ret = gpiochip_add_pin_range(gc, dev_name(dev), 0, gc->base, gc->ngpio); + if (ret) { + dev_err(dev, "fail to add pin range\n"); + return ret; + } + bank->gpio_chip = gc; + } + + platform_set_drvdata(pdev, info); + dev_info(dev, "probed %pfw\n", fwnode); return 0; } diff --git a/drivers/pinctrl/pinctrl-rockchip.h b/drivers/pinctrl/pinctrl-rockchip.h index 4759f336941e..2be12e76b2c4 100644 --- a/drivers/pinctrl/pinctrl-rockchip.h +++ b/drivers/pinctrl/pinctrl-rockchip.h @@ -330,7 +330,7 @@ struct rockchip_pin_bank { struct device_node *of_node; struct rockchip_pinctrl *drvdata; struct irq_domain *domain; - struct gpio_chip gpio_chip; + struct gpio_chip *gpio_chip; struct pinctrl_gpio_range grange; raw_spinlock_t slock; const struct rockchip_gpio_regs *gpio_regs;