From patchwork Tue May 18 14:19:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dafna Hirschfeld X-Patchwork-Id: 441644 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 F029FC43460 for ; Tue, 18 May 2021 14:19:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C421D6135C for ; Tue, 18 May 2021 14:19:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349952AbhEROU7 (ORCPT ); Tue, 18 May 2021 10:20:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349941AbhEROU7 (ORCPT ); Tue, 18 May 2021 10:20:59 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92AF9C061573; Tue, 18 May 2021 07:19:41 -0700 (PDT) Received: from guri.fritz.box (unknown [IPv6:2a02:810a:880:f54:8085:99d1:d3e8:47cc]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: dafna) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 93F001F42B04; Tue, 18 May 2021 15:19:39 +0100 (BST) From: Dafna Hirschfeld To: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Cc: megous@megous.com, linux-usb@vger.kernel.org, a.hajda@samsung.com, narmstrong@baylibre.com, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@siol.net, airlied@linux.ie, daniel@ffwll.ch, chunkuang.hu@kernel.org, p.zabel@pengutronix.de, enric.balletbo@collabora.com, drinkcat@chromium.org, hsinyi@chromium.org, kernel@collabora.com, dafna3@gmail.com, dafna.hirschfeld@collabora.com, robh+dt@kernel.org Subject: [PATCH v6 RESEND 0/2] Add support for ANX7688 Date: Tue, 18 May 2021 16:19:25 +0200 Message-Id: <20210518141927.24795-1-dafna.hirschfeld@collabora.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org (resending patchset with Rb tags) ANX7688 is a typec port controller that also converts HDMI to DP. It is found on Acer Chromebook R13 (elm) and on Pine64 PinePhone. On Acer Chromebook R13 (elm), the device is powered-up and controller by the Embedded Controller. Therefore its operation is transparent to the SoC. It is used in elm only as a display bridge driver. The bridge driver only reads some values using i2c and use them to implement the mode_fixup cb. On v5 we added the full dt-binding of the generic Analogix anx7688 device. The problem is that for elm, most of the fields are not needed since the anx7688 sits behind the EC. After a discussion on v5 (see [1]) we decided to go back to the original approach and send the dt binding as specific to the elm. So in this version we rename the device to cros_ec_anx7688 and use the compatible 'google,cros-ec-anx7688'. [1] https://patchwork.kernel.org/project/dri-devel/patch/20210305124351.15079-3-dafna.hirschfeld@collabora.com/ Changes since v5: * treat the device as a specific combination of an ANX7688 behind the EC and call it 'cros-ec-anx7688' Changes since v4: In v4 of this set, the device was added as an 'mfd' device and an additional 'bridge' device for the HDMI-DP conversion, see [2]. [2] https://lkml.org/lkml/2020/3/18/64 Dafna Hirschfeld (1): dt-bindings: display: add google,cros-ec-anx7688.yaml Enric Balletbo i Serra (1): drm/bridge: Add ChromeOS EC ANX7688 bridge driver support .../bridge/google,cros-ec-anx7688.yaml | 82 ++++++++ drivers/gpu/drm/bridge/Kconfig | 12 ++ drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/cros-ec-anx7688.c | 191 ++++++++++++++++++ 4 files changed, 286 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.yaml create mode 100644 drivers/gpu/drm/bridge/cros-ec-anx7688.c