From patchwork Wed Sep 7 21:35:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 75705 Delivered-To: patch@linaro.org Received: by 10.140.106.11 with SMTP id d11csp526387qgf; Wed, 7 Sep 2016 14:37:11 -0700 (PDT) X-Received: by 10.98.24.70 with SMTP id 67mr4459853pfy.52.1473284231102; Wed, 07 Sep 2016 14:37:11 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id lo4si43010147pab.269.2016.09.07.14.37.05; Wed, 07 Sep 2016 14:37:11 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-arm-msm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-arm-msm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-arm-msm-owner@vger.kernel.org; dmarc=fail (p=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935059AbcIGVgz (ORCPT + 8 others); Wed, 7 Sep 2016 17:36:55 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:36464 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757446AbcIGVfm (ORCPT ); Wed, 7 Sep 2016 17:35:42 -0400 Received: by mail-pa0-f46.google.com with SMTP id id6so9963890pad.3 for ; Wed, 07 Sep 2016 14:35:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=W5OGgCLVYAlJVxdGldLv8BwPMgl9E7A/j4PMMvGEBKY=; b=Pqgd4lHxjgMY4ZNlIMC0yq3PEC1U0quE0Kog2kzhG1XaxVwPdeqqmW0cnKIxk5/Dla Kl+mq8HGVObVyVvUX6kA52vOKESG8c30/lvi/OT9pKjfPyinyzLUahbjiMtUc9IAbc2C 8WZYd4TLWUhpq4dkReNVyecCGwne19J+2qGlE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=W5OGgCLVYAlJVxdGldLv8BwPMgl9E7A/j4PMMvGEBKY=; b=CPkyI1hdgndkYSuddmZk/oBn4aQ55Q3mtkECZ7M0WpJiZroGffuCQTI6Uq2hkPj0hQ VNI7wj7k9DOxeeQ8G1hHmnn0W/6R8xCCGwt5rOzYQ+3rWCtD/mg6TeTqX140YhCcdxkb Zw6o6m8RPt523gv51VX9LyZj/LsN8qYtjQtNtptkJ3NktHfSbFNuW0De34T1gfWAxZpx gPS3cAac0GukFojxm5J3EO3BOrT/6PUFqO1E2vd8jpx+hVVeB+vfrZJ5+F+RbU9mmWvQ khZcd6slJsL5Y8NGiEGoVfNKLJPp5ckfvb1eaYM4G9+mt/uCeEWt86WgppbBlNFC/JqV Sp+g== X-Gm-Message-State: AE9vXwObqPtX5/2DZ8Ky0UJFrptXYPeWJrzkbIU5NLGWz45k0JUrmyhHEsLLVYdsbmb/3/df X-Received: by 10.66.245.177 with SMTP id xp17mr48361227pac.118.1473284141537; Wed, 07 Sep 2016 14:35:41 -0700 (PDT) Received: from localhost.localdomain (ip68-101-172-78.sd.sd.cox.net. [68.101.172.78]) by smtp.gmail.com with ESMTPSA id 75sm51015417pfw.92.2016.09.07.14.35.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 07 Sep 2016 14:35:41 -0700 (PDT) From: Stephen Boyd To: linux-usb@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Andy Gross , Bjorn Andersson , Neil Armstrong , Arnd Bergmann , Felipe Balbi , Peter Chen , Greg Kroah-Hartman Subject: [PATCH v4 16/22] usb: chipidea: msm: Restore wrapper settings after reset Date: Wed, 7 Sep 2016 14:35:13 -0700 Message-Id: <20160907213519.27340-17-stephen.boyd@linaro.org> X-Mailer: git-send-email 2.9.0.rc2.8.ga28705d In-Reply-To: <20160907213519.27340-1-stephen.boyd@linaro.org> References: <20160907213519.27340-1-stephen.boyd@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org When the RESET bit is set in the USBCMD register it resets quite a few of the wrapper's registers to their reset state. This includes the GENCONFIG and GENCONFIG2 registers. Currently this is done by the usb phy and ehci-msm drivers writing into the controller wrapper's MMIO address space. Let's consolidate the register writes into the wrapper driver instead so that we clearly split the wrapper from the phys. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd --- drivers/usb/chipidea/ci_hdrc_msm.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) -- 2.9.0.rc2.8.ga28705d -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c index 4b0aadc2be2f..333817291798 100644 --- a/drivers/usb/chipidea/ci_hdrc_msm.c +++ b/drivers/usb/chipidea/ci_hdrc_msm.c @@ -14,11 +14,22 @@ #include #include #include +#include +#include #include "ci.h" #define HS_PHY_AHB_MODE 0x0098 +#define HS_PHY_GENCONFIG 0x009c +#define HS_PHY_TXFIFO_IDLE_FORCE_DIS BIT(4) + +#define HS_PHY_GENCONFIG_2 0x00a0 +#define HS_PHY_SESS_VLD_CTRL_EN BIT(7) +#define HS_PHY_ULPI_TX_PKT_EN_CLR_FIX BIT(19) + +#define HSPHY_SESS_VLD_CTRL BIT(25) + /* Vendor base starts at 0x200 beyond CI base */ #define HS_PHY_SEC_CTRL 0x0078 #define HS_PHY_DIG_CLAMP_N BIT(16) @@ -29,6 +40,7 @@ struct ci_hdrc_msm { struct clk *iface_clk; struct clk *fs_clk; bool secondary_phy; + bool hsic; void __iomem *base; }; @@ -48,6 +60,24 @@ static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) /* use AHB transactor, allow posted data writes */ hw_write_id_reg(ci, HS_PHY_AHB_MODE, 0xffffffff, 0x8); + + /* workaround for rx buffer collision issue */ + hw_write_id_reg(ci, HS_PHY_GENCONFIG, + HS_PHY_TXFIFO_IDLE_FORCE_DIS, 0); + + if (!msm_ci->hsic) + hw_write_id_reg(ci, HS_PHY_GENCONFIG_2, + HS_PHY_ULPI_TX_PKT_EN_CLR_FIX, 0); + + if (!IS_ERR(ci->platdata->vbus_extcon.edev)) { + hw_write_id_reg(ci, HS_PHY_GENCONFIG_2, + HS_PHY_SESS_VLD_CTRL_EN, + HS_PHY_SESS_VLD_CTRL_EN); + hw_write(ci, OP_USBCMD, HSPHY_SESS_VLD_CTRL, + HSPHY_SESS_VLD_CTRL); + + } + usb_phy_init(ci->usb_phy); break; case CI_HDRC_CONTROLLER_STOPPED_EVENT: @@ -116,6 +146,7 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev) struct reset_control *reset; struct resource *res; int ret; + struct device_node *ulpi_node, *phy_node; dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n"); @@ -181,6 +212,14 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev) if (ret) goto err_mux; + ulpi_node = of_find_node_by_name(pdev->dev.of_node, "ulpi"); + if (ulpi_node) { + phy_node = of_get_next_available_child(ulpi_node, NULL); + ci->hsic = of_device_is_compatible(phy_node, "qcom,usb-hsic-phy"); + of_node_put(phy_node); + } + of_node_put(ulpi_node); + plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource, pdev->num_resources, &ci_hdrc_msm_platdata);