From patchwork Wed Apr 26 07:14:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiawen Wu X-Patchwork-Id: 677621 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4DF2DC77B60 for ; Wed, 26 Apr 2023 07:18:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239696AbjDZHSQ (ORCPT ); Wed, 26 Apr 2023 03:18:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57734 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239658AbjDZHSP (ORCPT ); Wed, 26 Apr 2023 03:18:15 -0400 Received: from smtpbguseast3.qq.com (smtpbguseast3.qq.com [54.243.244.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEE4740E9; Wed, 26 Apr 2023 00:17:35 -0700 (PDT) X-QQ-mid: bizesmtp63t1682493371t8l7yqdq Received: from wxdbg.localdomain.com ( [183.129.236.74]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 26 Apr 2023 15:16:09 +0800 (CST) X-QQ-SSF: 01400000000000I0Z000000A0000000 X-QQ-FEAT: LpuzoIPF5uvlIR1sChlomaQhOop28RZ11wwzuem8e8bFByGearvsZwyOZmajt hfzYHy/AzqsQciedvhpISbt64OyKKtO/H4By3Cx2IgUzjvAvImWxGbm50WX/DS+Fq8/Z4nJ S0bonZYUTcFpnz/yOjTTZ1+3gYeJ8bSFRKn1KQyzi3AYnlLwWbyq+NkHVR/77cOdUHaZzGH /G6+90fO4XUykwc/a1xS2ExOzuTg8E/cAV83LMgbLV85TCkgM3pPKEjcAgpbBhGKdMS6Vmm ImSFbZ7VjntyeBw3vefR0lPGXlzZOcj7MSW5Qj0+3Ytbru78QuWlTrmX8dPFcYba0yhk2WG +fY5hABnB3qy4EzarCNxPlLR0OYLJFVIHwyoDTJpkmmzpSdCmliFImjzS5GBNcN3D2UoeKV Dz+E6Y/xsYey2YeGUZTaGg== X-QQ-GoodBg: 2 X-BIZMAIL-ID: 16835839409066510293 From: Jiawen Wu To: netdev@vger.kernel.org, jarkko.nikula@linux.intel.com, andriy.shevchenko@linux.intel.com, mika.westerberg@linux.intel.com, jsd@semihalf.com, ose.Abreu@synopsys.com, andrew@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk Cc: linux-i2c@vger.kernel.org, linux-gpio@vger.kernel.org, mengyuanlou@net-swift.com, Jiawen Wu Subject: [RFC PATCH net-next v5 3/9] net: txgbe: Register fixed rate clock Date: Wed, 26 Apr 2023 15:14:28 +0800 Message-Id: <20230426071434.452717-4-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20230426071434.452717-1-jiawenwu@trustnetic.com> References: <20230426071434.452717-1-jiawenwu@trustnetic.com> MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:trustnetic.com:qybglogicsvr:qybglogicsvr5 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org In order for I2C to be able to work in standard mode, register a fixed rate clock for each I2C device. Signed-off-by: Jiawen Wu --- drivers/net/ethernet/wangxun/Kconfig | 1 + .../net/ethernet/wangxun/txgbe/txgbe_phy.c | 41 +++++++++++++++++++ .../net/ethernet/wangxun/txgbe/txgbe_type.h | 2 + 3 files changed, 44 insertions(+) diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig index c9d88673d306..a62614eeed2e 100644 --- a/drivers/net/ethernet/wangxun/Kconfig +++ b/drivers/net/ethernet/wangxun/Kconfig @@ -40,6 +40,7 @@ config NGBE config TXGBE tristate "Wangxun(R) 10GbE PCI Express adapters support" depends on PCI + select COMMON_CLK select LIBWX help This driver supports Wangxun(R) 10GbE PCI Express family of diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c index 8d36621b99d0..4311d80aa5c3 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c @@ -2,6 +2,8 @@ /* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */ #include +#include +#include #include #include @@ -70,6 +72,32 @@ static int txgbe_swnodes_register(struct txgbe *txgbe) return software_node_register_node_group(nodes->group); } +static int txgbe_clock_register(struct txgbe *txgbe) +{ + struct pci_dev *pdev = txgbe->wx->pdev; + struct clk_lookup *clock; + char clk_name[32]; + struct clk *clk; + + snprintf(clk_name, sizeof(clk_name), "i2c_designware.%d", + (pdev->bus->number << 8) | pdev->devfn); + + clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 156250000); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + clock = clkdev_create(clk, NULL, clk_name); + if (!clock) { + clk_unregister(clk); + return PTR_ERR(clock); + } + + txgbe->clk = clk; + txgbe->clock = clock; + + return 0; +} + int txgbe_init_phy(struct txgbe *txgbe) { int ret; @@ -80,10 +108,23 @@ int txgbe_init_phy(struct txgbe *txgbe) return ret; } + ret = txgbe_clock_register(txgbe); + if (ret) { + wx_err(txgbe->wx, "failed to register clock: %d\n", ret); + goto err_unregister_swnode; + } + return 0; + +err_unregister_swnode: + software_node_unregister_node_group(txgbe->nodes.group); + + return ret; } void txgbe_remove_phy(struct txgbe *txgbe) { + clkdev_drop(txgbe->clock); + clk_unregister(txgbe->clk); software_node_unregister_node_group(txgbe->nodes.group); } diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h index 5bef0f9df523..cdbc4b37f832 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h @@ -146,6 +146,8 @@ struct txgbe_nodes { struct txgbe { struct wx *wx; struct txgbe_nodes nodes; + struct clk_lookup *clock; + struct clk *clk; }; #endif /* _TXGBE_TYPE_H_ */