From patchwork Fri Mar 5 16:31:01 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: 394113 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, URIBL_BLOCKED, 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 068C1C43381 for ; Fri, 5 Mar 2021 16:32:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D65AF6508F for ; Fri, 5 Mar 2021 16:32:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229682AbhCEQbk (ORCPT ); Fri, 5 Mar 2021 11:31:40 -0500 Received: from asav21.altibox.net ([109.247.116.8]:37690 "EHLO asav21.altibox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231124AbhCEQbY (ORCPT ); Fri, 5 Mar 2021 11:31:24 -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 3F3268016B; Fri, 5 Mar 2021 17:31:12 +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 v7 0/3] GUD USB Display driver Date: Fri, 5 Mar 2021 17:31:01 +0100 Message-Id: <20210305163104.30756-1-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=PJ4hB8iC c=1 sm=1 tr=0 a=OYZzhG0JTxDrWp/F2OJbnw==:117 a=OYZzhG0JTxDrWp/F2OJbnw==:17 a=IkcTkHD0fZMA:10 a=M51BFTxLslgA:10 a=gAmX6pxEAAAA:20 a=e5mUnYsNAAAA:8 a=YwjdnX4TFwikY6-GU-cA:9 a=QEXdDO2ut3YA:10 a=Vxmtnl_E_bksehYqCbjh:22 a=BPzZvq435JnGatEyYwdK:22 a=pHzHmUro8NiASowvMSCR:22 a=Ew2E2A-JSTLzCXPT_086:22 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: - LZ4_compress_default() can return zero, check for that - Fix memory leak in gud_pipe_check() error path (Peter) - Improve debug and error messages (Peter) - Don't pass length in protocol structs (Peter) - Pass USB interface to gud_usb_control_msg() et al. (Peter) - Improve gud_connector_fill_properties() (Peter) - Add GUD_PIXEL_FORMAT_RGB111 (Peter) - Remove GUD_REQ_SET_VERSION (Peter) - Fix DRM_IOCTL_MODE_OBJ_SETPROPERTY and the rotation property - Fix dma-buf import (Thomas) Note: There are several changes to the protocol. I plan to apply the patches in a week or so unless something turns out to be broken. Dependency: drm: Use USB controller's DMA mask when importing dmabufs[2] (currently in drm-misc-fixes but not in drm-misc-next yet, also present in drm-tip and linux-next) Noralf. [1] https://github.com/notro/gud/wiki [2] https://patchwork.freedesktop.org/patch/msgid/20210303133229.3288-1-tzimmermann@suse.de 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 | 729 ++++++++++++++++++++++++++++ drivers/gpu/drm/gud/gud_drv.c | 659 +++++++++++++++++++++++++ drivers/gpu/drm/gud/gud_internal.h | 154 ++++++ drivers/gpu/drm/gud/gud_pipe.c | 535 ++++++++++++++++++++ include/drm/gud.h | 333 +++++++++++++ include/uapi/drm/drm_mode.h | 1 + 13 files changed, 2447 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