From patchwork Wed Dec 7 13:19:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 13067110 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82383C352A1 for ; Wed, 7 Dec 2022 13:19:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229949AbiLGNTq (ORCPT ); Wed, 7 Dec 2022 08:19:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229939AbiLGNTp (ORCPT ); Wed, 7 Dec 2022 08:19:45 -0500 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::221]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3B14140BC; Wed, 7 Dec 2022 05:19:43 -0800 (PST) Received: (Authenticated sender: foss@0leil.net) by mail.gandi.net (Postfix) with ESMTPSA id D722E240008; Wed, 7 Dec 2022 13:19:40 +0000 (UTC) From: Quentin Schulz To: Minas Harutyunyan , Greg Kroah-Hartman Cc: Quentin Schulz , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, William Wu , Bin Yang , Frank Wang Subject: [PATCH 1/3] usb: dwc2: disable lpm feature on Rockchip SoCs Date: Wed, 7 Dec 2022 14:19:16 +0100 Message-Id: <20221206-dwc2-gadget-dual-role-v1-1-36515e1092cd@theobroma-systems.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221206-dwc2-gadget-dual-role-v1-0-36515e1092cd@theobroma-systems.com> References: <20221206-dwc2-gadget-dual-role-v1-0-36515e1092cd@theobroma-systems.com> MIME-Version: 1.0 X-Mailer: b4 0.10.1 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Quentin Schulz LPM feature of DWC2 module integrated in Rockchip SoCs doesn't work properly or needs some additional handling, so disable it for now. Without disabling LPM feature, the USB ADB communication fail with the following error log: dwc2 ff580000.usb: new address 27 dwc2 ff580000.usb: Failed to exit L1 sleep state in 200us. dwc2 ff580000.usb: dwc2_hsotg_send_reply: cannot queue req dwc2 ff580000.usb: dwc2_hsotg_process_req_status: failed to send reply dwc2 ff580000.usb: dwc2_hsotg_enqueue_setup: failed queue (-11) dwc2 ff580000.usb: Failed to exit L1 sleep state in 200us. Signed-off-by: William Wu Signed-off-by: Frank Wang [diff vs vendor kernel: added lpm_clock_gating, besl and hird_threshold_en settings as seen in commit 53febc956900 ("usb: dwc2: disable Link Power Management on STM32MP15 HS OTG")] Signed-off-by: Quentin Schulz --- drivers/usb/dwc2/params.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 8eab5f38b1101..9ed9fd9569404 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -113,6 +113,10 @@ static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg) p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; p->power_down = DWC2_POWER_DOWN_PARAM_NONE; + p->lpm = false; + p->lpm_clock_gating = false; + p->besl = false; + p->hird_threshold_en = false; } static void dwc2_set_ltq_params(struct dwc2_hsotg *hsotg) From patchwork Wed Dec 7 13:19:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 13067111 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A741CC4708E for ; Wed, 7 Dec 2022 13:19:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229956AbiLGNTv (ORCPT ); Wed, 7 Dec 2022 08:19:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229946AbiLGNTr (ORCPT ); Wed, 7 Dec 2022 08:19:47 -0500 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25894140BC; Wed, 7 Dec 2022 05:19:45 -0800 (PST) Received: (Authenticated sender: foss@0leil.net) by mail.gandi.net (Postfix) with ESMTPSA id C29E8240004; Wed, 7 Dec 2022 13:19:42 +0000 (UTC) From: Quentin Schulz To: Minas Harutyunyan , Greg Kroah-Hartman Cc: Quentin Schulz , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, William Wu , Bin Yang , Frank Wang Subject: [PATCH 2/3] usb: dwc2: power on/off phy for peripheral mode in dual-role mode Date: Wed, 7 Dec 2022 14:19:17 +0100 Message-Id: <20221206-dwc2-gadget-dual-role-v1-2-36515e1092cd@theobroma-systems.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221206-dwc2-gadget-dual-role-v1-0-36515e1092cd@theobroma-systems.com> References: <20221206-dwc2-gadget-dual-role-v1-0-36515e1092cd@theobroma-systems.com> MIME-Version: 1.0 X-Mailer: b4 0.10.1 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Quentin Schulz The PHY power is handled for peripheral mode but only when the device is forced into this peripheral mode. It is missing when the device is operating in peripheral mode when dual-role mode is enabled, so let's update the condition to match this scenario. Signed-off-by: Quentin Schulz --- drivers/usb/dwc2/gadget.c | 6 ++++-- drivers/usb/dwc2/platform.c | 3 ++- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 8b15742d9e8aa..62fa6378d2d73 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4549,7 +4549,8 @@ static int dwc2_hsotg_udc_start(struct usb_gadget *gadget, hsotg->gadget.dev.of_node = hsotg->dev->of_node; hsotg->gadget.speed = USB_SPEED_UNKNOWN; - if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) { + if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL || + (hsotg->dr_mode == USB_DR_MODE_OTG && dwc2_is_device_mode(hsotg))) { ret = dwc2_lowlevel_hw_enable(hsotg); if (ret) goto err; @@ -4611,7 +4612,8 @@ static int dwc2_hsotg_udc_stop(struct usb_gadget *gadget) if (!IS_ERR_OR_NULL(hsotg->uphy)) otg_set_peripheral(hsotg->uphy->otg, NULL); - if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) + if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL || + (hsotg->dr_mode == USB_DR_MODE_OTG && dwc2_is_device_mode(hsotg))) dwc2_lowlevel_hw_disable(hsotg); return 0; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index ec4ace0107f5f..1d4f1ba22b92a 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -576,7 +576,8 @@ static int dwc2_driver_probe(struct platform_device *dev) dwc2_debugfs_init(hsotg); /* Gadget code manages lowlevel hw on its own */ - if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) + if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL || + (hsotg->dr_mode == USB_DR_MODE_OTG && dwc2_is_device_mode(hsotg))) dwc2_lowlevel_hw_disable(hsotg); #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ From patchwork Wed Dec 7 13:19:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 13067112 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1892C352A1 for ; Wed, 7 Dec 2022 13:19:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229759AbiLGNTz (ORCPT ); Wed, 7 Dec 2022 08:19:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229680AbiLGNTu (ORCPT ); Wed, 7 Dec 2022 08:19:50 -0500 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::221]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A870140F7; Wed, 7 Dec 2022 05:19:49 -0800 (PST) Received: (Authenticated sender: foss@0leil.net) by mail.gandi.net (Postfix) with ESMTPSA id 72C2B24000F; Wed, 7 Dec 2022 13:19:44 +0000 (UTC) From: Quentin Schulz To: Minas Harutyunyan , Greg Kroah-Hartman Cc: Quentin Schulz , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, William Wu , Bin Yang , Frank Wang Subject: [PATCH 3/3] usb: dwc2: prevent core phy initialisation Date: Wed, 7 Dec 2022 14:19:18 +0100 Message-Id: <20221206-dwc2-gadget-dual-role-v1-3-36515e1092cd@theobroma-systems.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221206-dwc2-gadget-dual-role-v1-0-36515e1092cd@theobroma-systems.com> References: <20221206-dwc2-gadget-dual-role-v1-0-36515e1092cd@theobroma-systems.com> MIME-Version: 1.0 X-Mailer: b4 0.10.1 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Quentin Schulz From: Bin Yang The usb phys need to be controlled dynamically on some Rockchip SoCs. So set the new HCD flag which prevents USB core from trying to manage our phys. Signed-off-by: Bin Yang Signed-off-by: Frank Wang Signed-off-by: Quentin Schulz --- drivers/usb/dwc2/hcd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 657f1f659ffaf..757a66fa32fa8 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5315,6 +5315,13 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) if (!IS_ERR_OR_NULL(hsotg->uphy)) otg_set_host(hsotg->uphy->otg, &hcd->self); + /* + * do not manage the PHY state in the HCD core, instead let the driver + * handle this (for example if the PHY can only be turned on after a + * specific event) + */ + hcd->skip_phy_initialization = 1; + /* * Finish generic HCD initialization and start the HCD. This function * allocates the DMA buffer pool, registers the USB bus, requests the