From patchwork Mon Jul 19 12:19:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12385733 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1EC7C07E9B for ; Mon, 19 Jul 2021 12:20:17 +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 A876261029 for ; Mon, 19 Jul 2021 12:20:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A876261029 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bp.renesas.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org 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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id: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=U5pQPZiqLiIYIneFYeAvhMEJjOXW8+chzmpGR4uej78=; b=nQFU6hXNnQ659t MJPGYglgjOBIN7ev/ELGY4LGyMExb5i1JvETavHJkaJC7tsAXddK96vPICTSOOt6M4tEsJb9oc3Oq ZyGahBfTAjCr5XeSgX7bJsYSJ3n5xN8XgKGF9J1xOkz7wtrxXOcyudAIF2sqoLhny87y6uvdVW+eO INwInyLhP7emRB/e6+FnTIJxC5NDQEIDmcyEm+tys6srsWo99HippVgagB6wsIDGXBkG2TiVBSneB wrj8wPyUEGYAAqt0Z1I4TyugXI/gnW8BAgW0hf8nabade298SK6UsOk6IEkBQ2o84qBl5FwXN4rQK 75jMnpih05qWsqG0Pm1Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5SFt-009a69-83; Mon, 19 Jul 2021 12:20:17 +0000 Received: from relmlor1.renesas.com ([210.160.252.171] helo=relmlie5.idc.renesas.com) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5SFf-009a3A-Ee for linux-phy@lists.infradead.org; Mon, 19 Jul 2021 12:20:05 +0000 X-IronPort-AV: E=Sophos;i="5.84,252,1620658800"; d="scan'208";a="88130176" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 19 Jul 2021 21:20:02 +0900 Received: from localhost.localdomain (unknown [10.226.92.6]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 5DC1640061A1; Mon, 19 Jul 2021 21:20:00 +0900 (JST) From: Biju Das To: Yoshihiro Shimoda Cc: Biju Das , Kishon Vijay Abraham I , Vinod Koul , linux-renesas-soc@vger.kernel.org, linux-phy@lists.infradead.org, Geert Uytterhoeven , Chris Paterson , Biju Das , Prabhakar Mahadev Lad Subject: [PATCH v4 07/10] phy: renesas: phy-rcar-gen3-usb2: Add OTG support for RZ/G2L Date: Mon, 19 Jul 2021 13:19:35 +0100 Message-Id: <20210719121938.6532-8-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210719121938.6532-1-biju.das.jz@bp.renesas.com> References: <20210719121938.6532-1-biju.das.jz@bp.renesas.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210719_052003_809080_ABB62F94 X-CRM114-Status: GOOD ( 20.95 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org This patch adds OTG support for RZ/G2L SoC. We need to use a different compatible string due to some differences with R-Car Gen3 USB2.0 PHY. It uses line ctrl register for OTG_ID pin changes and different OTG-BC interrupt bit for device recognition. Signed-off-by: Biju Das Reviewed-by: Lad Prabhakar --- v3->v4; * using family compatible instead of SoC specific. v3: * Made seperate compatible for RZ/G2L. * Extended rcar_gen3_phy_usb2_match_table[].data to support RZ/G2L. --- drivers/phy/renesas/phy-rcar-gen3-usb2.c | 97 ++++++++++++++++++------ 1 file changed, 73 insertions(+), 24 deletions(-) diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index fbc55232120e..9de617ca9daa 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -64,6 +64,7 @@ /* VBCTRL */ #define USB2_VBCTRL_OCCLREN BIT(16) #define USB2_VBCTRL_DRVVBUSSEL BIT(8) +#define USB2_VBCTRL_VBOUT BIT(0) /* LINECTRL1 */ #define USB2_LINECTRL1_DPRPD_EN BIT(19) @@ -78,6 +79,10 @@ #define USB2_ADPCTRL_IDPULLUP BIT(5) /* 1 = ID sampling is enabled */ #define USB2_ADPCTRL_DRVVBUS BIT(4) +/* RZ/G2L specific */ +#define USB2_OBINT_IDCHG_EN BIT(0) +#define USB2_LINECTRL1_USB2_IDMON BIT(0) + #define NUM_OF_PHYS 4 enum rcar_gen3_phy_index { PHY_INDEX_BOTH_HC, @@ -112,9 +117,16 @@ struct rcar_gen3_chan { struct mutex lock; /* protects rphys[...].powered */ enum usb_dr_mode dr_mode; int irq; + u32 obint_enable_bits; bool extcon_host; bool is_otg_channel; bool uses_otg_pins; + bool soc_no_adp_ctrl; +}; + +struct rcar_gen3_phy_drv_data { + const struct phy_ops *phy_usb2_ops; + bool no_adp_ctrl; }; /* @@ -172,14 +184,22 @@ static void rcar_gen3_set_linectrl(struct rcar_gen3_chan *ch, int dp, int dm) static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus) { void __iomem *usb2_base = ch->base; - u32 val = readl(usb2_base + USB2_ADPCTRL); + u32 vbus_ctrl_reg = USB2_ADPCTRL; + u32 vbus_ctrl_val = USB2_ADPCTRL_DRVVBUS; + u32 val; dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, vbus); + if (ch->soc_no_adp_ctrl) { + vbus_ctrl_reg = USB2_VBCTRL; + vbus_ctrl_val = USB2_VBCTRL_VBOUT; + } + + val = readl(usb2_base + vbus_ctrl_reg); if (vbus) - val |= USB2_ADPCTRL_DRVVBUS; + val |= vbus_ctrl_val; else - val &= ~USB2_ADPCTRL_DRVVBUS; - writel(val, usb2_base + USB2_ADPCTRL); + val &= ~vbus_ctrl_val; + writel(val, usb2_base + vbus_ctrl_reg); } static void rcar_gen3_control_otg_irq(struct rcar_gen3_chan *ch, int enable) @@ -188,9 +208,9 @@ static void rcar_gen3_control_otg_irq(struct rcar_gen3_chan *ch, int enable) u32 val = readl(usb2_base + USB2_OBINTEN); if (ch->uses_otg_pins && enable) - val |= USB2_OBINT_BITS; + val |= ch->obint_enable_bits; else - val &= ~USB2_OBINT_BITS; + val &= ~ch->obint_enable_bits; writel(val, usb2_base + USB2_OBINTEN); } @@ -252,6 +272,9 @@ static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch) if (!ch->uses_otg_pins) return (ch->dr_mode == USB_DR_MODE_HOST) ? false : true; + if (ch->soc_no_adp_ctrl) + return !!(readl(ch->base + USB2_LINECTRL1) & USB2_LINECTRL1_USB2_IDMON); + return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG); } @@ -376,16 +399,17 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) USB2_LINECTRL1_DMRPD_EN | USB2_LINECTRL1_DM_RPD; writel(val, usb2_base + USB2_LINECTRL1); - val = readl(usb2_base + USB2_VBCTRL); - val &= ~USB2_VBCTRL_OCCLREN; - writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL); - val = readl(usb2_base + USB2_ADPCTRL); - writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL); - + if (!ch->soc_no_adp_ctrl) { + val = readl(usb2_base + USB2_VBCTRL); + val &= ~USB2_VBCTRL_OCCLREN; + writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL); + val = readl(usb2_base + USB2_ADPCTRL); + writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL); + } msleep(20); writel(0xffffffff, usb2_base + USB2_OBINTSTA); - writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTEN); + writel(ch->obint_enable_bits, usb2_base + USB2_OBINTEN); rcar_gen3_device_recognition(ch); } @@ -397,9 +421,9 @@ static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch) u32 status = readl(usb2_base + USB2_OBINTSTA); irqreturn_t ret = IRQ_NONE; - if (status & USB2_OBINT_BITS) { + if (status & ch->obint_enable_bits) { dev_vdbg(ch->dev, "%s: %08x\n", __func__, status); - writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA); + writel(ch->obint_enable_bits, usb2_base + USB2_OBINTSTA); rcar_gen3_device_recognition(ch); ret = IRQ_HANDLED; } @@ -535,26 +559,45 @@ static const struct phy_ops rz_g1c_phy_usb2_ops = { .owner = THIS_MODULE, }; +static const struct rcar_gen3_phy_drv_data rcar_gen3_phy_usb2_data = { + .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, + .no_adp_ctrl = false, +}; + +static const struct rcar_gen3_phy_drv_data rz_g1c_phy_usb2_data = { + .phy_usb2_ops = &rz_g1c_phy_usb2_ops, + .no_adp_ctrl = false, +}; + +static const struct rcar_gen3_phy_drv_data rz_g2l_phy_usb2_data = { + .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, + .no_adp_ctrl = true, +}; + static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { { .compatible = "renesas,usb2-phy-r8a77470", - .data = &rz_g1c_phy_usb2_ops, + .data = &rz_g1c_phy_usb2_data, }, { .compatible = "renesas,usb2-phy-r8a7795", - .data = &rcar_gen3_phy_usb2_ops, + .data = &rcar_gen3_phy_usb2_data, }, { .compatible = "renesas,usb2-phy-r8a7796", - .data = &rcar_gen3_phy_usb2_ops, + .data = &rcar_gen3_phy_usb2_data, }, { .compatible = "renesas,usb2-phy-r8a77965", - .data = &rcar_gen3_phy_usb2_ops, + .data = &rcar_gen3_phy_usb2_data, + }, + { + .compatible = "renesas,rzg2l-usb2-phy", + .data = &rz_g2l_phy_usb2_data, }, { .compatible = "renesas,rcar-gen3-usb2-phy", - .data = &rcar_gen3_phy_usb2_ops, + .data = &rcar_gen3_phy_usb2_data, }, { /* sentinel */ }, }; @@ -608,10 +651,10 @@ static enum usb_dr_mode rcar_gen3_get_dr_mode(struct device_node *np) static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) { + const struct rcar_gen3_phy_drv_data *phy_data; struct device *dev = &pdev->dev; struct rcar_gen3_chan *channel; struct phy_provider *provider; - const struct phy_ops *phy_usb2_ops; int ret = 0, i; if (!dev->of_node) { @@ -627,6 +670,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) if (IS_ERR(channel->base)) return PTR_ERR(channel->base); + channel->obint_enable_bits = USB2_OBINT_BITS; /* get irq number here and request_irq for OTG in phy_init */ channel->irq = platform_get_irq_optional(pdev, 0); channel->dr_mode = rcar_gen3_get_dr_mode(dev->of_node); @@ -653,16 +697,21 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) * And then, phy-core will manage runtime pm for this device. */ pm_runtime_enable(dev); - phy_usb2_ops = of_device_get_match_data(dev); - if (!phy_usb2_ops) { + + phy_data = of_device_get_match_data(dev); + if (!phy_data) { ret = -EINVAL; goto error; } + channel->soc_no_adp_ctrl = phy_data->no_adp_ctrl; + if (phy_data->no_adp_ctrl) + channel->obint_enable_bits = USB2_OBINT_IDCHG_EN; + mutex_init(&channel->lock); for (i = 0; i < NUM_OF_PHYS; i++) { channel->rphys[i].phy = devm_phy_create(dev, NULL, - phy_usb2_ops); + phy_data->phy_usb2_ops); if (IS_ERR(channel->rphys[i].phy)) { dev_err(dev, "Failed to create USB2 PHY\n"); ret = PTR_ERR(channel->rphys[i].phy);