From patchwork Mon Nov 11 02:34:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ye Zhang X-Patchwork-Id: 13870187 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 DF2E8D12D60 for ; Mon, 11 Nov 2024 02:38:13 +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=9ev4YwN/N2gUFRSF87RbrnED8JfIwY0n9K3Z44VSFqg=; b=jH1avNdWjzG++Z TZonDLcEFbPdFzs902U7xqaempqbTAVcLzRwGQWINAw89WGgQ33uvVqphwNVdfgsTWXiqVHrBIfHc mJgQUUS3uEe2anSECwTuQrx/jiPxgqOxbKzexhOCDM42hWhGcM5Nk9gB3eELL0V+pdUV098HL2elb 7IOAgU3Ll52h9SGtwMaGQbzjii9vrJwECNEULItQFTh1IQzLtd0DY9lu7gMKd9dsTP2I1Xv76ynYT q0YkWkbuaRaxTveuOg3rzElh/zY9yhElLqfO3GXdHrMcbJMZeRG6rZkXIFtz7GDdwHHeAY3YkzJoe 7fOuRYL8259egHMWIJUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tAKJe-0000000G8rf-2WXx; Mon, 11 Nov 2024 02:38:10 +0000 Received: from mail-m17243.xmail.ntesmail.com ([45.195.17.243]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tAKG5-0000000G8Jw-304e; Mon, 11 Nov 2024 02:34:33 +0000 Received: from rockchip.. (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 258a5851; Mon, 11 Nov 2024 10:34:22 +0800 (GMT+08:00) From: Ye Zhang To: Ye Zhang , linus.walleij@linaro.org, brgl@bgdev.pl, heiko@sntech.de, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, tao.huang@rock-chips.com, finley.xiao@rock-chips.com, tim.chen@rock-chips.com, elaine.zhang@rock-chips.com Subject: [PATCH v4 2/4] gpio: rockchip: change the GPIO version judgment logic Date: Mon, 11 Nov 2024 10:34:10 +0800 Message-Id: <20241111023412.3466161-3-ye.zhang@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241111023412.3466161-1-ye.zhang@rock-chips.com> References: <20241111023412.3466161-1-ye.zhang@rock-chips.com> MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQxlJS1YfTUNKSE1NThpKSENWFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSUhCSE NVSktLVUpCS0tZBg++ X-HM-Tid: 0a9319127de209d8kunm258a5851 X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Py46Khw6FjIjEixKMw8qGDFW HUoaFAtVSlVKTEhKSUJJT01PSkJNVTMWGhIXVQIeVQETGhUcOwkUGBBWGBMSCwhVGBQWRVlXWRIL WUFZTkNVSUlVTFVKSk9ZV1kIAVlBSkhPQzcG DKIM-Signature: a=rsa-sha256; b=PMDf6IZaMBzkQAOU0WNh1boWHdQwaHX7M5knKr110MgtXf/f1kJs/a+nRS3PgETWkfOjjoMBP3OYfr5J8OpzrCBxQkm+LW7WAy/TYag5/HYkvJC5Dzr1qAQzmAPb3jmyHu1D09PLVHslTuJDAFkCmURbIxiofL6DE57qmOEauHo=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=vWJG8cvhxWAUIWFD+PqmL7Rgp7985cdAoAUoZrwNjjs=; h=date:mime-version:subject:message-id:from; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241110_183430_255772_2FD757A7 X-CRM114-Status: GOOD ( 10.49 ) 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 Have a list of valid IDs and default to -ENODEV. Signed-off-by: Ye Zhang Reviewed-by: Sebastian Reichel --- drivers/gpio/gpio-rockchip.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index 71672d654491..f05b92e0e977 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -667,8 +667,13 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) clk_prepare_enable(bank->clk); id = readl(bank->reg_base + gpio_regs_v2.version_id); - /* If not gpio v2, that is default to v1. */ - if (id == GPIO_TYPE_V2 || id == GPIO_TYPE_V2_1) { + switch (id) { + case GPIO_TYPE_V1: + bank->gpio_regs = &gpio_regs_v1; + bank->gpio_type = GPIO_TYPE_V1; + break; + case GPIO_TYPE_V2: + case GPIO_TYPE_V2_1: bank->gpio_regs = &gpio_regs_v2; bank->gpio_type = GPIO_TYPE_V2; bank->db_clk = of_clk_get(bank->of_node, 1); @@ -677,9 +682,10 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) clk_disable_unprepare(bank->clk); return -EINVAL; } - } else { - bank->gpio_regs = &gpio_regs_v1; - bank->gpio_type = GPIO_TYPE_V1; + break; + default: + dev_err(bank->dev, "cannot get the version ID\n"); + return -ENODEV; } return 0;