From patchwork Sat Jun 4 02:48:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thinh Nguyen X-Patchwork-Id: 12869522 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 0D61EC433EF for ; Sat, 4 Jun 2022 02:48:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350207AbiFDCsI (ORCPT ); Fri, 3 Jun 2022 22:48:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231513AbiFDCsH (ORCPT ); Fri, 3 Jun 2022 22:48:07 -0400 Received: from smtprelay-out1.synopsys.com (smtprelay-out1.synopsys.com [149.117.87.133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61E1E1E3CA; Fri, 3 Jun 2022 19:48:06 -0700 (PDT) Received: from mailhost.synopsys.com (sv1-mailhost1.synopsys.com [10.205.2.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mailhost.synopsys.com", Issuer "SNPSica2" (verified OK)) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id EBF86C06ED; Sat, 4 Jun 2022 02:48:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1654310885; bh=l2Dng8KaEPZccFcyqmFjgQbD27S2kaTiANhG3L7vXfQ=; h=Date:From:Subject:To:Cc:From; b=Xa57fy37XK3M4BzZFK0G6ddFh3/hOZb0bC4SW4/7umlKAK1XgGmMgsLm4k13yCgLw 5RRgTnIY/wAv6666cWfhO43UYMQ9bBitPYgKjJj4E9kyHZ9ucxWSPfev/NzcplKigQ hJ6ltnA9FtQ8VzOT6JeEkw8hMVsJje1WZpKfCCFDMbSZAwf3VropLPQvPU3sb9KlUB Bt7NIB803yIbTl68AsU6b+iIuA3D26fLPIpN+Hfh+e7AWa8bJaMkgMDlTxjsj6IlMR X22KWYYivPzrfziUB5gNB7FobDttQnqLVqu1ix151hPXRHP+bVztRGZRPSlbSPZkV1 A1oyG8ICRV2MQ== Received: from te-lab15 (nanobot.internal.synopsys.com [10.204.48.11]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client did not present a certificate) by mailhost.synopsys.com (Postfix) with ESMTPSA id CB542A0085; Sat, 4 Jun 2022 02:48:00 +0000 (UTC) Received: by te-lab15 (sSMTP sendmail emulation); Fri, 03 Jun 2022 19:48:00 -0700 Date: Fri, 03 Jun 2022 19:48:00 -0700 Message-Id: X-SNPS-Relay: synopsys.com From: Thinh Nguyen Subject: [RFC PATCH 0/4] usb: xhci: Introduce xhci-snps To: Felipe Balbi , Greg Kroah-Hartman , Thinh Nguyen , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Mathias Nyman , Matthias Kaehlcke , Lukas Bulwahn , Krzysztof Kozlowski , Juergen Gross Cc: John Youn , Pavan Kondeti Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Synopsys DWC_usb3x IPs are used on many different platforms. Since they share the same IP, often the quirks are common across different platforms and versions. This drives the need to find a way to handle all the common (and platform specific) quirks and separate its logic from dwc3 and xhci core logic. Hopefully it can also reduce introducing new device properties while maintaining abstraction. So, let's create a xhci-snps glue extension that can apply to xhci-plat and xhci-pci glue drivers and teach it to handle DWC_usb3x hosts. For this particular change, we'll start with xhci-plat glue driver. NOTE: This is a quick implementation of how I'd imagine to handle this. I apologize if it may lack documentation. It doesn't have all the common quirks added. I'd like to receive some feedbacks before moving forward. Many thanks! Thinh Thinh Nguyen (4): dt-bindings: usb: usb-xhci: Add xhci-snps-quirks usb: dwc3: host: Always set xhci-snps-quirks usb: dwc3: core: Share global register access with xhci driver usb: xhci: Introduce Synopsys glue extension for DWC_usb3x .../devicetree/bindings/usb/usb-xhci.yaml | 4 + drivers/usb/dwc3/core.c | 4 +- drivers/usb/dwc3/host.c | 4 +- drivers/usb/host/Kconfig | 8 + drivers/usb/host/Makefile | 3 + drivers/usb/host/xhci-plat.c | 40 ++++ drivers/usb/host/xhci-plat.h | 3 + drivers/usb/host/xhci-snps.c | 185 ++++++++++++++++++ drivers/usb/host/xhci-snps.h | 32 +++ 9 files changed, 280 insertions(+), 3 deletions(-) create mode 100644 drivers/usb/host/xhci-snps.c create mode 100644 drivers/usb/host/xhci-snps.h base-commit: 97fa5887cf283bb75ffff5f6b2c0e71794c02400