From patchwork Thu Mar 26 13:44:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 11460065 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 ABAA41668 for ; Thu, 26 Mar 2020 13:45:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8358D2077D for ; Thu, 26 Mar 2020 13:45:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="1s2evVvN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727881AbgCZNpY (ORCPT ); Thu, 26 Mar 2020 09:45:24 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:39702 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727855AbgCZNpX (ORCPT ); Thu, 26 Mar 2020 09:45:23 -0400 Received: by mail-wr1-f68.google.com with SMTP id p10so7859720wrt.6 for ; Thu, 26 Mar 2020 06:45:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ADzYgjGOgHOtUw/QufLYo/yFk6QQng/fuo3s/mdjUtc=; b=1s2evVvNNcsCiZwNF+IKILngbPXtpEtC60KEFj75x7JmCErDv4LrIl6nC3rJz3LP8p jAKd/Oi+fcgckOsneV6gQF/QcR//pdLAhqjnxXaSBYUshH+qYVVPEJ8PBs+ujKpEEr/C yAxKrykeRL/tjZNXpUNPScltaieME7HBUgOQLfZIVFM51jADa6ZRzy2tqcMbfL6QGA6y dL4aqpAW17F5BZQz2quzRcXe650GxzVMh8eqL2BI9DYHyUbxvGlQ62Ci1mCNC6mrpFee 4U67t5ZLabg1dztYg+po0LWhru7Om/H3pL66V9I7wlcOotrZuoT+5Qo6e9wPKpp3hDiL Y+Nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ADzYgjGOgHOtUw/QufLYo/yFk6QQng/fuo3s/mdjUtc=; b=Ux4A9VK+hj8cHv0Z0XsLdeQUgjF74SZp7tGrI9xHW+Vlqp2/cdDhbC2g1/E5CFZN54 T98QWT3DZChRyAy+zUVoA/o9BFovcIgvSQM5m3cXvtzpBfgMsKcMEyxma86zVqsehDMc SACKHhsbdKjeCUurW21DBbkVvE2Nxktmxa0TVkTagu/hwPqPOom+HiiJF6cDi0rhE7UD 5wz4FzhINAdMylaM7zNBm0mMGcidySPJVNt8MgKb5lESmMg95pPHIeCgsPISyDzM37IN 4Hd0QYAapX7X2ecc/YSPBdxGPGMgiCx44o0s4n7D/wNqpk/7VZG2iJjVqDVBKMyx8lqZ 3uuQ== X-Gm-Message-State: ANhLgQ2+irabWhW7sXSAl38U3NQtJ9kh8V5UdcM5tRa/dlV9EE814mqk UdrK0pD2M+rjVdduLl7KGOZ/0A== X-Google-Smtp-Source: ADFU+vtfhKfdRRfS/g5hPSgJvWSebA28iSEs/QoA3gp5cLK3H+Astw/T4q2ZHHg33v0wi8RW8gyAXA== X-Received: by 2002:adf:9022:: with SMTP id h31mr9259345wrh.223.1585230319979; Thu, 26 Mar 2020 06:45:19 -0700 (PDT) Received: from bender.baylibre.local ([2a01:e35:2ec0:82b0:5c5f:613e:f775:b6a2]) by smtp.gmail.com with ESMTPSA id h29sm4079617wrc.64.2020.03.26.06.45.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2020 06:45:19 -0700 (PDT) From: Neil Armstrong To: kishon@ti.com, balbi@kernel.org, khilman@baylibre.com, martin.blumenstingl@googlemail.com Cc: Neil Armstrong , linux-amlogic@lists.infradead.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 07/14] usb: dwc3: meson-g12a: refactor usb init Date: Thu, 26 Mar 2020 14:44:59 +0100 Message-Id: <20200326134507.4808-8-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200326134507.4808-1-narmstrong@baylibre.com> References: <20200326134507.4808-1-narmstrong@baylibre.com> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Refactor the USB init code patch to handle the Amlogic GXL/GXM needing to initialize the OTG port as Peripheral mode for the DWC2 IP to probe correctly. A secondary, post_init callback is added to setup the OTG PHY mode after the sub-nodes probe. Signed-off-by: Neil Armstrong --- drivers/usb/dwc3/dwc3-meson-g12a.c | 46 +++++++++++++++++++++--------- 1 file changed, 33 insertions(+), 13 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index 328e74def56f..43b398b7b1f7 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -140,6 +140,8 @@ struct dwc3_meson_g12a_drvdata { enum phy_mode mode); int (*set_phy_mode)(struct dwc3_meson_g12a *priv, int i, enum phy_mode mode); + int (*usb_init)(struct dwc3_meson_g12a *priv); + int (*usb_post_init)(struct dwc3_meson_g12a *priv); }; static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv, @@ -151,6 +153,8 @@ static int dwc3_meson_g12a_usb2_init_phy(struct dwc3_meson_g12a *priv, int i, static int dwc3_meson_g12a_set_phy_mode(struct dwc3_meson_g12a *priv, int i, enum phy_mode mode); +static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv); + static struct dwc3_meson_g12a_drvdata g12a_drvdata = { .otg_switch_supported = true, .clks = meson_g12a_clocks, @@ -160,6 +164,7 @@ static struct dwc3_meson_g12a_drvdata g12a_drvdata = { .setup_regmaps = dwc3_meson_g12a_setup_regmaps, .usb2_init_phy = dwc3_meson_g12a_usb2_init_phy, .set_phy_mode = dwc3_meson_g12a_set_phy_mode, + .usb_init = dwc3_meson_g12a_usb_init, }; static struct dwc3_meson_g12a_drvdata a1_drvdata = { @@ -171,6 +176,7 @@ static struct dwc3_meson_g12a_drvdata a1_drvdata = { .setup_regmaps = dwc3_meson_g12a_setup_regmaps, .usb2_init_phy = dwc3_meson_g12a_usb2_init_phy, .set_phy_mode = dwc3_meson_g12a_set_phy_mode, + .usb_init = dwc3_meson_g12a_usb_init, }; struct dwc3_meson_g12a { @@ -231,15 +237,11 @@ static int dwc3_meson_g12a_usb2_init_phy(struct dwc3_meson_g12a *priv, int i, return 0; } -static int dwc3_meson_g12a_usb2_init(struct dwc3_meson_g12a *priv) +static int dwc3_meson_g12a_usb2_init(struct dwc3_meson_g12a *priv, + enum phy_mode mode) { int i, ret; - if (priv->otg_mode == USB_DR_MODE_PERIPHERAL) - priv->otg_phy_mode = PHY_MODE_USB_DEVICE; - else - priv->otg_phy_mode = PHY_MODE_USB_HOST; - for (i = 0; i < priv->drvdata->num_phys; ++i) { if (!priv->phys[i]) continue; @@ -284,9 +286,10 @@ static void dwc3_meson_g12a_usb3_init(struct dwc3_meson_g12a *priv) FIELD_PREP(USB_R1_P30_PCS_TX_SWING_FULL_MASK, 127)); } -static void dwc3_meson_g12a_usb_otg_apply_mode(struct dwc3_meson_g12a *priv) +static void dwc3_meson_g12a_usb_otg_apply_mode(struct dwc3_meson_g12a *priv, + enum phy_mode mode) { - if (priv->otg_phy_mode == PHY_MODE_USB_DEVICE) { + if (mode == PHY_MODE_USB_DEVICE) { regmap_update_bits(priv->usb_glue_regmap, USB_R0, USB_R0_U2D_ACT, USB_R0_U2D_ACT); regmap_update_bits(priv->usb_glue_regmap, USB_R0, @@ -301,11 +304,12 @@ static void dwc3_meson_g12a_usb_otg_apply_mode(struct dwc3_meson_g12a *priv) } } -static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv) +static int dwc3_meson_g12a_usb_init_glue(struct dwc3_meson_g12a *priv, + enum phy_mode mode) { int ret; - ret = dwc3_meson_g12a_usb2_init(priv); + ret = dwc3_meson_g12a_usb2_init(priv, mode); if (ret) return ret; @@ -327,7 +331,7 @@ static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv) if (priv->usb3_ports) dwc3_meson_g12a_usb3_init(priv); - dwc3_meson_g12a_usb_otg_apply_mode(priv); + dwc3_meson_g12a_usb_otg_apply_mode(priv, mode); return 0; } @@ -406,7 +410,7 @@ static int dwc3_meson_g12a_otg_mode_set(struct dwc3_meson_g12a *priv, if (ret) return ret; - dwc3_meson_g12a_usb_otg_apply_mode(priv); + dwc3_meson_g12a_usb_otg_apply_mode(priv, mode); return 0; } @@ -553,6 +557,11 @@ static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv, return 0; } +static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv) +{ + return dwc3_meson_g12a_usb_init_glue(priv, priv->otg_phy_mode); +} + static int dwc3_meson_g12a_probe(struct platform_device *pdev) { struct dwc3_meson_g12a *priv; @@ -620,7 +629,12 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) /* Get dr_mode */ priv->otg_mode = usb_get_dr_mode(dev); - ret = dwc3_meson_g12a_usb_init(priv); + if (priv->otg_mode == USB_DR_MODE_PERIPHERAL) + priv->otg_phy_mode = PHY_MODE_USB_DEVICE; + else + priv->otg_phy_mode = PHY_MODE_USB_HOST; + + ret = priv->drvdata->usb_init(priv); if (ret) goto err_disable_clks; @@ -642,6 +656,12 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev) if (ret) goto err_phys_power; + if (priv->drvdata->usb_post_init) { + ret = priv->drvdata->usb_post_init(priv); + if (ret) + goto err_phys_power; + } + ret = dwc3_meson_g12a_otg_init(pdev, priv); if (ret) goto err_phys_power;