From patchwork Fri Feb 28 02:07:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Ren X-Patchwork-Id: 11411381 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 46064924 for ; Fri, 28 Feb 2020 02:08:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C5A0246A2 for ; Fri, 28 Feb 2020 02:08:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Apj5qeNS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730532AbgB1CIK (ORCPT ); Thu, 27 Feb 2020 21:08:10 -0500 Received: from mail-pg1-f195.google.com ([209.85.215.195]:41719 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730460AbgB1CIK (ORCPT ); Thu, 27 Feb 2020 21:08:10 -0500 Received: by mail-pg1-f195.google.com with SMTP id b1so657399pgm.8; Thu, 27 Feb 2020 18:08:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=n5+f023/AFTFPRU78q67NXWfPpix42i3+SQGTMudxQo=; b=Apj5qeNSE7RPSSinJ9TPqbB1XM2gpbEDtEHtwXJ5JcOdRpEWHC2Q8X5M0Hdb0WV6fK 4ZjD7RhOnrJeZH55GFjTKEv+uEghUDFayUjpl8D5sOpFlOUpDTozeZzsQw7PlfBnRScn ebeGnE/otQI1oFbvU/h9pkNwvLlsBUdpq5FERZby3MthvLH6LCUnOPFjSxZ1HherIeRF GNg844ti1HMnHtBt1bzwrpQmqsUb9kqwu0Q8b+bgN+2Q1c4f0le6yZq7Nvfr1mF4SmIC GImHWCY3tHp1L06+Hk4+bshIonSWjb2c+k/Em6JmMvIMKy1TRiR7RQa631WmeILOIvPP QCWg== 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; bh=n5+f023/AFTFPRU78q67NXWfPpix42i3+SQGTMudxQo=; b=dK/5j1BOvYW0bnBSdH8zjcBcpXH5lffrAIkSBdlwM+mDlMxCQQVNb5LIdDGQn3B2qR k54n8/ndpdJn+RGLYu120Dc9u1xrSqjnw51T0frWIQ5E+rmS9uNU2QRrnuRPJz5rtKsy mLx2bqTOQB6hgANcVsc43GM/L9LJaWCW+9JYd+7QhMRQShq7JsAnZIf0gIVjksPp59fs iLvCnBT07a9n79UurOl31c7GGD8OtiueCPu4P9RGhjAJDI9sXYcAwVSIyf/VL4B1Mt3t 38VirCZSuJzbjmNOKvFwhErk2vZME5sklAyVizDCkStTi49xtlT2//3nRtkWAT5lzqDQ L6kA== X-Gm-Message-State: APjAAAWxcCeCiNurxho6zbPmcGNZBhlTKeBpCok42fiptv3uwbiGNF/m fPTvLk6SUdkgj1BMOxA7T30= X-Google-Smtp-Source: APXvYqxjw2Lt8dBPAv3hg4/x9xw5qg13CnR/Pjf+dW22neLPqjXy7A4sbsByZMVkEThK5yDmBVb1qg== X-Received: by 2002:a62:3304:: with SMTP id z4mr1913213pfz.79.1582855688950; Thu, 27 Feb 2020 18:08:08 -0800 (PST) Received: from taoren-ubuntu-R90MNF91.thefacebook.com ([2620:10d:c090:500::4:d8f5]) by smtp.gmail.com with ESMTPSA id k24sm4931972pgm.61.2020.02.27.18.08.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Feb 2020 18:08:08 -0800 (PST) From: rentao.bupt@gmail.com To: Felipe Balbi , Greg Kroah-Hartman , Joel Stanley , Andrew Jeffery , Benjamin Herrenschmidt , Chunfeng Yun , Colin Ian King , Stephen Boyd , Rob Herring , Mark Rutland , linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, taoren@fb.com Cc: Tao Ren Subject: [PATCH v6 1/7] usb: gadget: aspeed: support per-vhub usb descriptors Date: Thu, 27 Feb 2020 18:07:51 -0800 Message-Id: <20200228020757.10513-2-rentao.bupt@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200228020757.10513-1-rentao.bupt@gmail.com> References: <20200228020757.10513-1-rentao.bupt@gmail.com> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Tao Ren This patch store vhub's standard usb descriptors in struct "ast_vhub" so it's more convenient to customize descriptors and potentially support multiple vhub instances in the future. Signed-off-by: Tao Ren Acked-by: Benjamin Herrenschmidt --- No change in v2/v3/v4/v5/v6: - the patch is added to the patch series since v4. drivers/usb/gadget/udc/aspeed-vhub/hub.c | 43 ++++++++++++++++------- drivers/usb/gadget/udc/aspeed-vhub/vhub.h | 15 ++++++++ 2 files changed, 46 insertions(+), 12 deletions(-) diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c index 19b3517e04c0..9c3027306b15 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c @@ -93,11 +93,7 @@ static void ast_vhub_patch_dev_desc_usb1(struct usb_device_descriptor *desc) USB_DT_INTERFACE_SIZE + \ USB_DT_ENDPOINT_SIZE) -static const struct ast_vhub_full_cdesc { - struct usb_config_descriptor cfg; - struct usb_interface_descriptor intf; - struct usb_endpoint_descriptor ep; -} __attribute__ ((packed)) ast_vhub_conf_desc = { +static const struct ast_vhub_full_cdesc ast_vhub_conf_desc = { .cfg = { .bLength = USB_DT_CONFIG_SIZE, .bDescriptorType = USB_DT_CONFIG, @@ -266,6 +262,7 @@ static int ast_vhub_rep_desc(struct ast_vhub_ep *ep, u8 desc_type, u16 len) { size_t dsize; + struct ast_vhub *vhub = ep->vhub; EPDBG(ep, "GET_DESCRIPTOR(type:%d)\n", desc_type); @@ -281,20 +278,20 @@ static int ast_vhub_rep_desc(struct ast_vhub_ep *ep, switch(desc_type) { case USB_DT_DEVICE: dsize = USB_DT_DEVICE_SIZE; - memcpy(ep->buf, &ast_vhub_dev_desc, dsize); - BUILD_BUG_ON(dsize > sizeof(ast_vhub_dev_desc)); + memcpy(ep->buf, &vhub->vhub_dev_desc, dsize); + BUILD_BUG_ON(dsize > sizeof(vhub->vhub_dev_desc)); BUILD_BUG_ON(USB_DT_DEVICE_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; case USB_DT_CONFIG: dsize = AST_VHUB_CONF_DESC_SIZE; - memcpy(ep->buf, &ast_vhub_conf_desc, dsize); - BUILD_BUG_ON(dsize > sizeof(ast_vhub_conf_desc)); + memcpy(ep->buf, &vhub->vhub_conf_desc, dsize); + BUILD_BUG_ON(dsize > sizeof(vhub->vhub_conf_desc)); BUILD_BUG_ON(AST_VHUB_CONF_DESC_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; case USB_DT_HUB: dsize = AST_VHUB_HUB_DESC_SIZE; - memcpy(ep->buf, &ast_vhub_hub_desc, dsize); - BUILD_BUG_ON(dsize > sizeof(ast_vhub_hub_desc)); + memcpy(ep->buf, &vhub->vhub_hub_desc, dsize); + BUILD_BUG_ON(dsize > sizeof(vhub->vhub_hub_desc)); BUILD_BUG_ON(AST_VHUB_HUB_DESC_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; default: @@ -317,7 +314,8 @@ static int ast_vhub_rep_string(struct ast_vhub_ep *ep, u8 string_id, u16 lang_id, u16 len) { - int rc = usb_gadget_get_string (&ast_vhub_strings, string_id, ep->buf); + int rc = usb_gadget_get_string(&ep->vhub->vhub_str_desc, + string_id, ep->buf); /* * This should never happen unless we put too big strings in @@ -834,9 +832,30 @@ void ast_vhub_hub_reset(struct ast_vhub *vhub) writel(0, vhub->regs + AST_VHUB_EP1_STS_CHG); } +static void ast_vhub_init_desc(struct ast_vhub *vhub) +{ + /* Initialize vhub Device Descriptor. */ + memcpy(&vhub->vhub_dev_desc, &ast_vhub_dev_desc, + sizeof(vhub->vhub_dev_desc)); + + /* Initialize vhub Configuration Descriptor. */ + memcpy(&vhub->vhub_conf_desc, &ast_vhub_conf_desc, + sizeof(vhub->vhub_conf_desc)); + + /* Initialize vhub Hub Descriptor. */ + memcpy(&vhub->vhub_hub_desc, &ast_vhub_hub_desc, + sizeof(vhub->vhub_hub_desc)); + + /* Initialize vhub String Descriptors. */ + memcpy(&vhub->vhub_str_desc, &ast_vhub_strings, + sizeof(vhub->vhub_str_desc)); +} + void ast_vhub_init_hub(struct ast_vhub *vhub) { vhub->speed = USB_SPEED_UNKNOWN; INIT_WORK(&vhub->wake_work, ast_vhub_wake_work); + + ast_vhub_init_desc(vhub); } diff --git a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h index 761919e220d3..191f9fae7420 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h +++ b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h @@ -2,6 +2,9 @@ #ifndef __ASPEED_VHUB_H #define __ASPEED_VHUB_H +#include +#include + /***************************** * * * VHUB register definitions * @@ -373,6 +376,12 @@ struct ast_vhub_port { struct ast_vhub_dev dev; }; +struct ast_vhub_full_cdesc { + struct usb_config_descriptor cfg; + struct usb_interface_descriptor intf; + struct usb_endpoint_descriptor ep; +} __packed; + /* Global vhub structure */ struct ast_vhub { struct platform_device *pdev; @@ -409,6 +418,12 @@ struct ast_vhub { /* Upstream bus speed captured at bus reset */ unsigned int speed; + + /* Standard USB Descriptors of the vhub. */ + struct usb_device_descriptor vhub_dev_desc; + struct ast_vhub_full_cdesc vhub_conf_desc; + struct usb_hub_descriptor vhub_hub_desc; + struct usb_gadget_strings vhub_str_desc; }; /* Standard request handlers result codes */