From patchwork Thu Jul 23 02:12:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thinh Nguyen X-Patchwork-Id: 11679551 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 621FE13B1 for ; Thu, 23 Jul 2020 02:12:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 470DE22B3F for ; Thu, 23 Jul 2020 02:12:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=synopsys.com header.i=@synopsys.com header.b="d/2pJ5fZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387740AbgGWCME (ORCPT ); Wed, 22 Jul 2020 22:12:04 -0400 Received: from smtprelay-out1.synopsys.com ([149.117.87.133]:34878 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387467AbgGWCME (ORCPT ); Wed, 22 Jul 2020 22:12:04 -0400 Received: from mailhost.synopsys.com (sv2-mailhost2.synopsys.com [10.205.2.134]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id F36E0C0086; Thu, 23 Jul 2020 02:12:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1595470323; bh=/+ROx0/T1NSbYbubMd33Z0EHm6qA9f07CNzjW2+LDR0=; h=Date:From:Subject:To:Cc:From; b=d/2pJ5fZ+Kukaa5m9JGmut2+jUNcIh+KEM16M/q8R1czXj2+8JmV1u7GwPZNbTBRs +uTGc0ZYty54YSWS4NSh5GXk/Bvb0b2Ya9jyA8cLeaCa/xw87lmWhLpoVWyeMA8OOz 8IoU66o/lleLLz1QcvTnyyRrzu+7e45HpclCygaKnb0jAdB0IT0nWjk8CvuZ+Lp0bQ tFRpYK8paucQf3/HEwP9JvaAPqzRL4bbcKv8PtanXd+d62EJSZI0EgTzQBCsNhlcVO 2z498bFum419PR/gr9KK27fvlyBWgmTLPbZ+i/W4aOy5UwWV+nF9GHu/crOj7GnIg2 rt38t6sj5yGbg== Received: from te-lab16 (nanobot.internal.synopsys.com [10.10.186.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mailhost.synopsys.com (Postfix) with ESMTPSA id 4D1FAA0096; Thu, 23 Jul 2020 02:12:01 +0000 (UTC) Received: by te-lab16 (sSMTP sendmail emulation); Wed, 22 Jul 2020 19:12:01 -0700 Date: Wed, 22 Jul 2020 19:12:01 -0700 Message-Id: X-SNPS-Relay: synopsys.com From: Thinh Nguyen Subject: [PATCH v2 00/12] usb: Handle different sublink speeds To: Felipe Balbi , Greg Kroah-Hartman , Thinh Nguyen , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , Peter Chen , Alan Stern , Dejin Zheng , Roger Quadros , Marek Szyprowski Cc: John Youn Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org A USB super-speed-plus device may operate at different sublink speed and lane count (e.g. gen2x2, gen1x2, or gen2x1). The usb gadget stack needs to be able to handle a couple things: 1) Report the sublink speed attributes the device support 2) Select the sublink speed attribute This series introduces sublink speed attribute structure to ch9.h to capture the device capability of the gadget. It also introduces a new gadget ops udc_set_num_lanes_and_speed to select a specific sublink speed. DWC3 needs this support for DWC_usb32 IP. Implement the new changes for DWC3. Changes in v2: - Move usb_sublink_speed attribute struct and enum to include/linux/usb/ch9.h - Use "num-lanes" and "lane-speed-mantissa-gbps" as common properties instead - Add common functions to get num-lanes and lsm properties - Fix missing gen1x2 sublink speed attribute check report in dwc3 Thinh Nguyen (12): usb: ch9: Add sublink speed struct usb: gadget: composite: Avoid using magic numbers usb: gadget: Expose sublink speed attributes usb: gadget: Set max speed for SSP devices usb: composite: Properly report sublink speed usb: devicetree: Introduce num-lanes and lsm usb: common: Add functions to get lanes and lsm usb: dwc3: Initialize lane count and sublink speed usb: dwc3: gadget: Report sublink speed capability usb: dwc3: gadget: Implement setting of sublink speed usb: dwc3: gadget: Track connected lane and sublink speed usb: dwc3: gadget: Set speed only up to the max supported Documentation/devicetree/bindings/usb/generic.txt | 11 ++ drivers/usb/common/common.c | 26 ++++ drivers/usb/dwc3/core.c | 62 ++++++++++ drivers/usb/dwc3/core.h | 18 +++ drivers/usb/dwc3/gadget.c | 143 +++++++++++++++++++++- drivers/usb/gadget/composite.c | 81 ++++++++---- drivers/usb/gadget/udc/core.c | 24 +++- include/linux/usb/ch9.h | 62 ++++++++++ include/linux/usb/gadget.h | 23 ++++ 9 files changed, 414 insertions(+), 36 deletions(-) base-commit: 5db5ea26a2469d8899f995e82e8b718dc9e9d168