From patchwork Fri Mar 11 21:02:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 12778551 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 72FE0C433EF for ; Fri, 11 Mar 2022 21:02:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DE8D010E655; Fri, 11 Mar 2022 21:02:58 +0000 (UTC) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) by gabe.freedesktop.org (Postfix) with ESMTPS id B77AB10E651 for ; Fri, 11 Mar 2022 21:02:57 +0000 (UTC) Received: from tr.lan (ip-89-176-112-137.net.upcbroadband.cz [89.176.112.137]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id D9F7782F70; Fri, 11 Mar 2022 22:02:54 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1647032575; bh=1E3DvlaiOLhj6GO1xvjJI3Fha4s0Zd7F3HDREwJXgUE=; h=From:To:Cc:Subject:Date:From; b=CDx5L7oVyxXSEy8KKX7XcjR48ZwpPPnB/sgWJvdJsEpnnHHQwJrVoUwllhY/szkmM F+VbkRiMewoZAPhF25eL3C5FowwZ+y9grZfsbZJMlQ+BZRDOqv/wOU87mV/4V1SRTZ c0Rhs8M4JkakYbMwMIszJdG2igwGlAgEsTYsuN3bxfbOVPERertUTJs0PPCAnh4Z9e Q+uzF6+Cbs7JzTj7zhJhmbqVfXdI0cRuldzsvUIFCD64p+m9pL/l91SzZJe4SSuR+K Q3kdd6CMcnldX4s0AwS9cihfFBCQYnsVRxX6BZJYo24HFaIHQwHcbCxCzNblPpDE6T v2fQmZAxX3B6w== From: Marek Vasut To: dri-devel@lists.freedesktop.org Subject: [PATCH v4 00/13] drm: bridge: icn6211: Fix hard-coded panel settings and add I2C support Date: Fri, 11 Mar 2022 22:02:14 +0100 Message-Id: <20220311210227.124331-1-marex@denx.de> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Vasut , Robert Foss , Jagan Teki , Thomas Zimmermann , Sam Ravnborg , Maxime Ripard Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This series fixes multiple problems with the ICN6211 driver and adds support for configuration of the chip via I2C bus. First, in the current state, the ICN6211 driver hard-codes DPI timing and clock settings specific to some unknown panel. The settings provided by panel driver are ignored. Using any other panel than the one for which this driver is currently hard-coded can lead to permanent damage of the panel (per display supplier warning, and it sure did in my case. The damage looks like multiple rows of dead pixels at the bottom of the panel, and this is not going away even after long power off time). Much of this series thus fixes incorrect register layout, DPI timing programming, clock generation by adding actual PLL configuration code. This series also adds lane count decoding instead of using hard-coded value, and fills in a couple of registers with likely correct default values. Second, this series adds support for I2C configuration of the ICN6211. The device can be configured either via DSI command mode or via I2C, the register layout is the same in both cases. Since the datasheet for this device is very hard to come by, a lot of information has been salvaged from [1] and [2]. [1] https://github.com/rockchip-linux/kernel/blob/develop-4.19/drivers/gpu/drm/bridge/icn6211.c [2] https://github.com/tdjastrzebski/ICN6211-Configurator Cc: Jagan Teki Cc: Maxime Ripard Cc: Robert Foss Cc: Sam Ravnborg Cc: Thomas Zimmermann To: dri-devel@lists.freedesktop.org Marek Vasut (13): dt-bindings: display: bridge: icn6211: Document DSI data-lanes property drm: bridge: icn6211: Fix register layout drm: bridge: icn6211: Fix HFP_HSW_HBP_HI and HFP_MIN handling drm: bridge: icn6211: Add HS/VS/DE polarity handling drm: bridge: icn6211: Add DSI lane count DT property parsing drm: bridge: icn6211: Add generic DSI-to-DPI PLL configuration drm: bridge: icn6211: Use DSI burst mode without EoT and with LP command mode drm: bridge: icn6211: Disable DPI color swap drm: bridge: icn6211: Set SYS_CTRL_1 to value used in examples drm: bridge: icn6211: Implement atomic_get_input_bus_fmts drm: bridge: icn6211: Add I2C configuration support drm: bridge: icn6211: Rework ICN6211_DSI to chipone_writeb() drm: bridge: icn6211: Read and validate chip IDs before configuration .../display/bridge/chipone,icn6211.yaml | 18 +- drivers/gpu/drm/bridge/chipone-icn6211.c | 507 ++++++++++++++++-- 2 files changed, 472 insertions(+), 53 deletions(-)