From patchwork Thu Jan 9 02:30:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanjie Lin X-Patchwork-Id: 11324979 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E43811580 for ; Thu, 9 Jan 2020 02:32:39 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C260D2067D for ; Thu, 9 Jan 2020 02:32:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="oT97JY06" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C260D2067D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amlogic.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org 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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=sD+1TpH9eZW0zew+Mc4ooB4UMv3bEzvEpVOxhYKXGC4=; b=oT97JY06fE92/Q wUoy3lQVu7/QfKLW34Q8BSmLV2kmlNn9Pkwii8BuY+mUTD0Vt+HSZtIoB6HoMzHdbc9ZCIRDMH4gu SZBzVNzzpolZtRNLDnQqEQ+8R3/ydspoytZqXo61dhhi+jIhKc2LOgfL58pA15jGxPqYK9uoL8sHZ d8onq3etCkm3X0H3DIItt0iYj9+nqXMh5W+SKGUfcCZOT1hqYUbtqwNPqVOk4B2S3sOmScjdZj/N3 xrXAwbOyaqLPq0Wm6N8gWGmfU4wDjPTBsxC0Oul2rHSlyt2MHMn37q5h+wk7MiuX1y4Jjc7irDiPB KzApFd5JABI1uTyatRkA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ipNcl-0003oF-BB; Thu, 09 Jan 2020 02:32:39 +0000 Received: from mail-sh.amlogic.com ([58.32.228.43]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ipNbN-0002JO-VH; Thu, 09 Jan 2020 02:31:15 +0000 Received: from droid10.amlogic.com (10.18.11.213) by mail-sh.amlogic.com (10.18.11.5) with Microsoft SMTP Server id 15.1.1591.10; Thu, 9 Jan 2020 10:31:21 +0800 From: Hanjie Lin To: Jerome Brunet , Neil Armstrong , Rob Herring , Greg Kroah-Hartman , Kevin Hilman Subject: [PATCH v4 4/6] usb: dwc3: Add Amlogic A1 DWC3 glue Date: Thu, 9 Jan 2020 10:30:43 +0800 Message-ID: <1578537045-23260-5-git-send-email-hanjie.lin@amlogic.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1578537045-23260-1-git-send-email-hanjie.lin@amlogic.com> References: <1578537045-23260-1-git-send-email-hanjie.lin@amlogic.com> MIME-Version: 1.0 X-Originating-IP: [10.18.11.213] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200108_183114_043728_E677A2BB X-CRM114-Status: GOOD ( 14.80 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Hanjie Lin , Victor Wan , Jianxin Pan , Stephen Boyd , Michael Turquette , linux-usb@vger.kernel.org, Yue Wang , Martin Blumenstingl , Liang Yang , Qiufang Dai , Xingyu Chen , Carlo Caione , linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Jian Hu Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org Adds support for Amlogic A1 USB Control Glue HW. The Amlogic A1 SoC Family embeds 1 USB Controllers: - a DWC3 IP configured as Host for USB2 and USB3 A glue connects the controllers to the USB2 PHY of A1 SoC. Signed-off-by: Hanjie Lin Signed-off-by: Yue Wang --- drivers/usb/dwc3/dwc3-meson-g12a.c | 99 +++++++++++++++++++++++++++----------- 1 file changed, 71 insertions(+), 28 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index 8a3ec1a..957eda2 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -96,6 +96,11 @@ #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) +enum meson_soc_id { + MESON_SOC_G12A = 0, + MESON_SOC_A1, +}; + enum { USB2_HOST_PHY = 0, USB2_OTG_PHY, @@ -107,10 +112,21 @@ static const char *phy_names[PHY_COUNT] = { "usb2-phy0", "usb2-phy1", "usb3-phy0", }; +static const struct clk_bulk_data meson_g12a_clocks[] = { + { .id = NULL }, +}; + +static const struct clk_bulk_data meson_a1_clocks[] = { + { .id = "usb_ctrl" }, + { .id = "usb_bus" }, + { .id = "xtal_usb_ctrl" }, +}; + struct dwc3_meson_g12a { struct device *dev; struct regmap *regmap; - struct clk *clk; + struct clk_bulk_data *clks; + int num_clks; struct reset_control *reset; struct phy *phys[PHY_COUNT]; enum usb_dr_mode otg_mode; @@ -120,6 +136,7 @@ struct dwc3_meson_g12a { struct regulator *vbus; struct usb_role_switch_desc switch_desc; struct usb_role_switch *role_switch; + int soc_id; }; static void dwc3_meson_g12a_usb2_set_mode(struct dwc3_meson_g12a *priv, @@ -151,7 +168,7 @@ static int dwc3_meson_g12a_usb2_init(struct dwc3_meson_g12a *priv) U2P_R0_POWER_ON_RESET, U2P_R0_POWER_ON_RESET); - if (i == USB2_OTG_PHY) { + if (priv->otg_mode == USB_DR_MODE_OTG && i == USB2_OTG_PHY) { regmap_update_bits(priv->regmap, U2P_R0 + (U2P_REG_SIZE * i), U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS, @@ -295,7 +312,7 @@ static int dwc3_meson_g12a_otg_mode_set(struct dwc3_meson_g12a *priv, { int ret; - if (!priv->phys[USB2_OTG_PHY]) + if (priv->otg_mode != USB_DR_MODE_OTG || !priv->phys[USB2_OTG_PHY]) return -EINVAL; if (mode == PHY_MODE_USB_HOST) @@ -409,17 +426,32 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) priv->vbus = NULL; } - priv->clk = devm_clk_get(dev, NULL); - if (IS_ERR(priv->clk)) - return PTR_ERR(priv->clk); + priv->soc_id = (enum meson_soc_id)of_device_get_match_data(&pdev->dev); + + if (priv->soc_id == MESON_SOC_G12A) { + priv->clks = devm_kmemdup(dev, meson_g12a_clocks, + sizeof(meson_g12a_clocks), + GFP_KERNEL); + priv->num_clks = ARRAY_SIZE(meson_g12a_clocks); + } else if (priv->soc_id == MESON_SOC_A1) { + priv->clks = devm_kmemdup(dev, meson_a1_clocks, + sizeof(meson_a1_clocks), + GFP_KERNEL); + priv->num_clks = ARRAY_SIZE(meson_a1_clocks); + } else { + return -EINVAL; + } + + if (!priv->clks) + return -ENOMEM; - ret = clk_prepare_enable(priv->clk); + ret = devm_clk_bulk_get(dev, priv->num_clks, priv->clks); if (ret) return ret; - devm_add_action_or_reset(dev, - (void(*)(void *))clk_disable_unprepare, - priv->clk); + ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks); + if (ret) + return ret; platform_set_drvdata(pdev, priv); priv->dev = dev; @@ -433,16 +465,16 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) ret = reset_control_reset(priv->reset); if (ret) - return ret; + goto err_disable_clks; ret = dwc3_meson_g12a_get_phys(priv); if (ret) - return ret; + goto err_disable_clks; if (priv->vbus) { ret = regulator_enable(priv->vbus); if (ret) - return ret; + goto err_disable_clks; } /* Get dr_mode */ @@ -458,7 +490,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) dwc3_meson_g12a_irq_thread, IRQF_ONESHOT, pdev->name, priv); if (ret) - return ret; + goto err_disable_clks; } dwc3_meson_g12a_usb_init(priv); @@ -467,7 +499,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) for (i = 0 ; i < PHY_COUNT ; ++i) { ret = phy_init(priv->phys[i]); if (ret) - return ret; + goto err_disable_clks; } /* Set PHY Power */ @@ -478,18 +510,17 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) } ret = of_platform_populate(np, NULL, NULL, dev); - if (ret) { - clk_disable_unprepare(priv->clk); + if (ret) goto err_phys_power; - } + + if (priv->otg_mode != USB_DR_MODE_OTG) + goto setup_pm_runtime; /* Setup OTG mode corresponding to the ID pin */ - if (priv->otg_mode == USB_DR_MODE_OTG) { - otg_id = dwc3_meson_g12a_get_id(priv); - if (otg_id != priv->otg_phy_mode) { - if (dwc3_meson_g12a_otg_mode_set(priv, otg_id)) - dev_warn(dev, "Failed to switch OTG mode\n"); - } + otg_id = dwc3_meson_g12a_get_id(priv); + if (otg_id != priv->otg_phy_mode) { + if (dwc3_meson_g12a_otg_mode_set(priv, otg_id)) + dev_warn(dev, "Failed to switch OTG mode\n"); } /* Setup role switcher */ @@ -504,6 +535,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) if (IS_ERR(priv->role_switch)) dev_warn(dev, "Unable to register Role Switch\n"); +setup_pm_runtime: pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -518,6 +550,9 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) for (i = 0 ; i < PHY_COUNT ; ++i) phy_exit(priv->phys[i]); +err_disable_clks: + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); + return ret; } @@ -527,7 +562,8 @@ static int dwc3_meson_g12a_remove(struct platform_device *pdev) struct device *dev = &pdev->dev; int i; - usb_role_switch_unregister(priv->role_switch); + if (priv->otg_mode == USB_DR_MODE_OTG) + usb_role_switch_unregister(priv->role_switch); of_platform_depopulate(dev); @@ -547,7 +583,7 @@ static int __maybe_unused dwc3_meson_g12a_runtime_suspend(struct device *dev) { struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); - clk_disable(priv->clk); + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); return 0; } @@ -556,7 +592,7 @@ static int __maybe_unused dwc3_meson_g12a_runtime_resume(struct device *dev) { struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); - return clk_enable(priv->clk); + return clk_bulk_prepare_enable(priv->num_clks, priv->clks); } static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev) @@ -619,7 +655,14 @@ static const struct dev_pm_ops dwc3_meson_g12a_dev_pm_ops = { }; static const struct of_device_id dwc3_meson_g12a_match[] = { - { .compatible = "amlogic,meson-g12a-usb-ctrl" }, + { + .compatible = "amlogic,meson-g12a-usb-ctrl", + .data = (void *)MESON_SOC_G12A, + }, + { + .compatible = "amlogic,meson-a1-usb-ctrl", + .data = (void *)MESON_SOC_A1, + }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, dwc3_meson_g12a_match);