From patchwork Fri Feb 19 12:16:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Noralf_Tr=C3=B8nnes?= X-Patchwork-Id: 385177 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F7ADC433E6 for ; Fri, 19 Feb 2021 12:18:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A0C464EC7 for ; Fri, 19 Feb 2021 12:18:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230223AbhBSMSQ (ORCPT ); Fri, 19 Feb 2021 07:18:16 -0500 Received: from asav21.altibox.net ([109.247.116.8]:50372 "EHLO asav21.altibox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230170AbhBSMSN (ORCPT ); Fri, 19 Feb 2021 07:18:13 -0500 Received: from localhost.localdomain (unknown [81.166.168.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: noralf.tronnes@ebnett.no) by asav21.altibox.net (Postfix) with ESMTPSA id 6E45680173; Fri, 19 Feb 2021 13:17:08 +0100 (CET) From: =?utf-8?q?Noralf_Tr=C3=B8nnes?= To: dri-devel@lists.freedesktop.org Cc: linux-usb@vger.kernel.org, sam@ravnborg.org, peter@stuge.se, lkundrak@v3.sk, markus@raatikainen.cc, pontus.fuchs@gmail.com, hudson@trmm.net, th020394@gmail.com, =?utf-8?q?Noralf_Tr=C3=B8?= =?utf-8?q?nnes?= Subject: [PATCH v6 0/3] GUD USB Display driver Date: Fri, 19 Feb 2021 13:16:59 +0100 Message-Id: <20210219121702.50964-1-noralf@tronnes.org> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=Kb38TzQD c=1 sm=1 tr=0 a=OYZzhG0JTxDrWp/F2OJbnw==:117 a=OYZzhG0JTxDrWp/F2OJbnw==:17 a=IkcTkHD0fZMA:10 a=M51BFTxLslgA:10 a=gAmX6pxEAAAA:20 a=hV_BJ6Dg7UyOQLaYyLEA:9 a=QEXdDO2ut3YA:10 a=7zwkRhCwzGnCyznlyk9i:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=jd6J4Gguk5HxikPWLKER:22 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, A while back I had the idea to turn a Raspberry Pi Zero into a $5 USB to HDMI/SDTV/DPI display adapter. The protocol is open so people are free to make displays implementing it and use this driver, all that's needed is to add a USB vid:pid to the driver for the display. See the wiki[1] for more information and images for the Raspberry Pi Zero/4. Changes in this version: - Use obj-y in Makefile (Peter) - Fix missing le32_to_cpu() when using GUD_DISPLAY_MAGIC (Peter) - Set initial brightness on backlight device Noralf. [1] https://github.com/notro/gud/wiki Noralf Trønnes (3): drm/uapi: Add USB connector type drm/probe-helper: Check epoch counter in output_poll_execute() drm: Add GUD USB Display driver MAINTAINERS | 8 + drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_connector.c | 1 + drivers/gpu/drm/drm_probe_helper.c | 7 +- drivers/gpu/drm/gud/Kconfig | 14 + drivers/gpu/drm/gud/Makefile | 4 + drivers/gpu/drm/gud/gud_connector.c | 738 ++++++++++++++++++++++++++++ drivers/gpu/drm/gud/gud_drv.c | 625 +++++++++++++++++++++++ drivers/gpu/drm/gud/gud_internal.h | 149 ++++++ drivers/gpu/drm/gud/gud_pipe.c | 475 ++++++++++++++++++ include/drm/gud.h | 356 ++++++++++++++ include/uapi/drm/drm_mode.h | 1 + 13 files changed, 2380 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/gud/Kconfig create mode 100644 drivers/gpu/drm/gud/Makefile create mode 100644 drivers/gpu/drm/gud/gud_connector.c create mode 100644 drivers/gpu/drm/gud/gud_drv.c create mode 100644 drivers/gpu/drm/gud/gud_internal.h create mode 100644 drivers/gpu/drm/gud/gud_pipe.c create mode 100644 include/drm/gud.h