From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 9795EC433DF for ; Fri, 26 Jun 2020 10:21:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B80D20EDD for ; Fri, 26 Jun 2020 10:21:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="c6rBStMp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727776AbgFZKUC (ORCPT ); Fri, 26 Jun 2020 06:20:02 -0400 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:6099 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727102AbgFZKTn (ORCPT ); Fri, 26 Jun 2020 06:19:43 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Fri, 26 Jun 2020 03:18:06 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Fri, 26 Jun 2020 03:19:41 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Fri, 26 Jun 2020 03:19:41 -0700 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 26 Jun 2020 10:19:34 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 26 Jun 2020 10:19:34 +0000 Received: from nkristam-ubuntu.nvidia.com (Not Verified[10.19.67.128]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Fri, 26 Jun 2020 03:19:33 -0700 From: Nagarjuna Kristam To: , , , , CC: , , , Nagarjuna Kristam Subject: [PATCH V4 2/7] phy: tegra: xusb: Add support for UTMI pad power control Date: Fri, 26 Jun 2020 15:48:57 +0530 Message-ID: <1593166742-23592-3-git-send-email-nkristam@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593166742-23592-1-git-send-email-nkristam@nvidia.com> References: <1593166742-23592-1-git-send-email-nkristam@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1593166686; bh=395sNSRNsEfJLjQa4A25o47t2Ssq0FzmdvNGxGIQmSw=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=c6rBStMpva4qUkcjM0xDex7ObdB6VyfY/j5KLmBkn0EQyzOZB7ufFaeDcqssFEc8K YcUwgNmzEimHES5cPSBnzgkuk2douAeS/9yt2GqaYnS6rJ2H9nPAzMJQljlMefn0xo O0e3MYU1PyBr8dsAREjmLlIJgytEAEX5wEEflSIoD3ta6vs375QtXPByFDAoP9vFBD ARnwIe4cM0jhfm1vhiqaubquKHBuh7YkRUscx57l/uwY6quiRYr6PiudlngWVXA2bn +UlctngogGeRtttm9Xh0BcQAM4tfblJjzjKXsdVXzuHllkdxKJPX1guUm94BeXCloO 5ihC2E+O27xEA== Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add support for UTMI pad power on and off API's via soc ops. These API can be used by operations like charger detect to power on and off UTMI pad if needed. Update powered_on flag in the pad power control API's. Signed-off-by: Nagarjuna Kristam Acked-by: Thierry Reding --- V4: - No changes --- V3: - Added Acked-by updates to commit message. --- V2: - Patch re-based. --- drivers/phy/tegra/xusb-tegra186.c | 51 ++++++++++++++++++--------------------- drivers/phy/tegra/xusb.h | 2 ++ 2 files changed, 26 insertions(+), 27 deletions(-) diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c index 5d64f69..f862254 100644 --- a/drivers/phy/tegra/xusb-tegra186.c +++ b/drivers/phy/tegra/xusb-tegra186.c @@ -192,12 +192,8 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl) u32 value; int err; - mutex_lock(&padctl->lock); - - if (priv->bias_pad_enable++ > 0) { - mutex_unlock(&padctl->lock); + if (priv->bias_pad_enable++ > 0) return; - } err = clk_prepare_enable(priv->usb2_trk_clk); if (err < 0) @@ -221,8 +217,6 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl) value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); value &= ~USB2_PD_TRK; padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); - - mutex_unlock(&padctl->lock); } static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl) @@ -230,44 +224,29 @@ static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl) struct tegra186_xusb_padctl *priv = to_tegra186_xusb_padctl(padctl); u32 value; - mutex_lock(&padctl->lock); - - if (WARN_ON(priv->bias_pad_enable == 0)) { - mutex_unlock(&padctl->lock); + if (WARN_ON(priv->bias_pad_enable == 0)) return; - } - if (--priv->bias_pad_enable > 0) { - mutex_unlock(&padctl->lock); + if (--priv->bias_pad_enable > 0) return; - } value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); value |= USB2_PD_TRK; padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); clk_disable_unprepare(priv->usb2_trk_clk); - - mutex_unlock(&padctl->lock); } static void tegra_phy_xusb_utmi_pad_power_on(struct phy *phy) { struct tegra_xusb_lane *lane = phy_get_drvdata(phy); struct tegra_xusb_padctl *padctl = lane->pad->padctl; - struct tegra_xusb_usb2_port *port; - struct device *dev = padctl->dev; + struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane); unsigned int index = lane->index; u32 value; - if (!phy) - return; - - port = tegra_xusb_find_usb2_port(padctl, index); - if (!port) { - dev_err(dev, "no port found for USB2 lane %u\n", index); + if (!phy || usb2->powered_on) return; - } tegra186_utmi_bias_pad_power_on(padctl); @@ -280,16 +259,19 @@ static void tegra_phy_xusb_utmi_pad_power_on(struct phy *phy) value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index)); value &= ~USB2_OTG_PD_DR; padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index)); + + usb2->powered_on = true; } static void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy) { struct tegra_xusb_lane *lane = phy_get_drvdata(phy); struct tegra_xusb_padctl *padctl = lane->pad->padctl; + struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane); unsigned int index = lane->index; u32 value; - if (!phy) + if (!phy || !usb2->powered_on) return; value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); @@ -303,6 +285,8 @@ static void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy) udelay(2); tegra186_utmi_bias_pad_power_off(padctl); + + usb2->powered_on = false; } static int tegra186_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl, @@ -413,6 +397,8 @@ static int tegra186_utmi_phy_power_on(struct phy *phy) return -ENODEV; } + mutex_lock(&padctl->lock); + value = padctl_readl(padctl, XUSB_PADCTL_USB2_PAD_MUX); value &= ~(USB2_PORT_MASK << USB2_PORT_SHIFT(index)); value |= (PORT_XUSB << USB2_PORT_SHIFT(index)); @@ -464,14 +450,23 @@ static int tegra186_utmi_phy_power_on(struct phy *phy) /* TODO: pad power saving */ tegra_phy_xusb_utmi_pad_power_on(phy); + + mutex_unlock(&padctl->lock); return 0; } static int tegra186_utmi_phy_power_off(struct phy *phy) { + struct tegra_xusb_lane *lane = phy_get_drvdata(phy); + struct tegra_xusb_padctl *padctl = lane->pad->padctl; + + mutex_lock(&padctl->lock); + /* TODO: pad power saving */ tegra_phy_xusb_utmi_pad_power_down(phy); + mutex_unlock(&padctl->lock); + return 0; } @@ -938,6 +933,8 @@ static const struct tegra_xusb_padctl_ops tegra186_xusb_padctl_ops = { .probe = tegra186_xusb_padctl_probe, .remove = tegra186_xusb_padctl_remove, .vbus_override = tegra186_xusb_padctl_vbus_override, + .utmi_pad_power_on = tegra_phy_xusb_utmi_pad_power_on, + .utmi_pad_power_down = tegra_phy_xusb_utmi_pad_power_down, }; #if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h index ea35af7..6995fc4 100644 --- a/drivers/phy/tegra/xusb.h +++ b/drivers/phy/tegra/xusb.h @@ -396,6 +396,8 @@ struct tegra_xusb_padctl_ops { unsigned int index, bool enable); int (*vbus_override)(struct tegra_xusb_padctl *padctl, bool set); int (*utmi_port_reset)(struct phy *phy); + void (*utmi_pad_power_on)(struct phy *phy); + void (*utmi_pad_power_down)(struct phy *phy); }; struct tegra_xusb_padctl_soc { -- 2.7.4