From patchwork Mon Dec 30 09:04:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 11312747 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7440E109A for ; Mon, 30 Dec 2019 09:04:36 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 45DE52071E for ; Mon, 30 Dec 2019 09:04:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rHxBPzZ2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 45DE52071E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=a3op1m3US0SirjnEfk8BCdjr+lctpj6gUvV+L4yEtmg=; b=rHxBPzZ2y6FJ5n 6GuxFwdFlAwonTtcTQH3l1YNaObnX1DsLADy6BUVwsIDmPGKgqKSJJclXUM+EZ81vSFvQu2SKpShH /4E7cpZiUoRsFuPy6OAtwDvIGWstkBz9Nq8iDC8feRZwglM0OdUoAR2ZKeZgpOlzxdJSz8AXPb61/ 1yf3rSEENHlwKUt0IlNMsxo3DcBxUEizMom0/rnHJsXNVFLKUnHeQ6yZlxzEoM04+jpWQ0qn/oWmL dDCtWAh1hSGqQGI4KsGTzgkgeq/yyodzOTTILEE6g45pXTyAeqN5ipNM1nqSNVSxDtnllgJfNSiZ3 gJa1dcYV5Y2889qKAB7A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ilqyZ-0001Vl-IL; Mon, 30 Dec 2019 09:04:35 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ilqyV-0001U8-Pu; Mon, 30 Dec 2019 09:04:33 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id A6F8926AE6A From: Enric Balletbo i Serra To: linux-kernel@vger.kernel.org Subject: [PATCH v24 0/2] drm/bridge: PS8640 MIPI-to-eDP bridge Date: Mon, 30 Dec 2019 10:04:17 +0100 Message-Id: <20191230090419.137141-1-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191230_010432_095678_156CCD0E X-CRM114-Status: GOOD ( 15.06 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Jernej Skrabec , drinkcat@chromium.org, Jitao Shi , Daniel Vetter , Jonas Karlman , David Airlie , Neil Armstrong , dri-devel@lists.freedesktop.org, Andrzej Hajda , Ulrich Hecht , Rob Herring , linux-mediatek@lists.infradead.org, Laurent Pinchart , Philipp Zabel , hsinyi@chromium.org, matthias.bgg@gmail.com, Collabora Kernel ML , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Hi all, This is another version of the driver. Note that the driver changed significally and is a more simply because now is using the panel_bridge helpers. Apart from this, I addressed the comments from Maxime, Laurent and Ezequiel. This bridge is required to have the embedded display working on an Acer Chromebook R13 ("Elm"). Hopefully we are a bit more close to have this driver merged. If more changes are required, please let me know and I will work on it. Note: Along these around 20 revisions of this driver I was unable to reconstruct the full changelog history, so I'm skipping this. Sorry about that, I promise I'll maintain the changelog for future revisions. Thanks, Enric Changes in v24: - Fix GPIO polarity as all GPIO descriptors should be handled as active high (Laurent Pinchart) - Make static ps8640_bridge_attach (Ezequiel Garcia) - Use a define for the number of lanes (Ezequiel Garcia) Changes in v23: - Merge mute/unmute functions into one (Nicolas Boichat) - Use enum for ENABLE/DISABLE instead of bool (Ezequiel Garcia) - Rename mute/unmute to vdo_control and fix error messages (Nicolas Boichat and Enric) - Add space between address and address parameter 'address%02x' (Nicolas Boichat) - Add Tested-by Hsin-Yi - Added me as author after the refactor Changes in v22: - Migrate to YAML format (Maxime Ripart) - Remove mode-sel property. - Rename sleep-gpios to powerdown-gpios. - Remove sysfs attributes because are not really used (Enric Balletbo) - Use enum for address page offsets (Ezequiel Garcia) - Remove enable tracking (Enric Balletbo) - Use panel_bridge API (Laurent Pinchart) - Do not use kernel-doc format for non kernel-doc formatted commands (Enric Balletbo) - Remove verbose message for PAGE1_VSTART command (Ezequiel Garcia) - Use time_is_after_jiffies idiom (Ezequiel Garcia) - Remove unused macros (Ezequiel Garcia) - Fix weird alignment in dsi->mode_flags (Laurent Pinchart) - Use drm_of_find_panel_or_bridge helper (Laurent Pinchart) - Remove mode-sel-gpios as is not used (Laurent Pinchart) - Remove error messages to get gpios as the core will already report it (Enric Balletbo) - Remove redundant message getting the regulators (Laurent Pinchart) - Rename sleep-gpios to powerdown-gpios (Laurent Pinchart) - Use ARRAY_SIZE(ps_bridge->page) instead of MAX_DEV when possible (Laurent Pinchart) - Fix race with userspace accessing the sysfs attributes (Laurent Pinchart) - Remove id_table as is only used on DR platforms (Laurent Pinchart) - Convert to new i2c device probe() (Laurent Pinchart) - Use i2c_smbus_read/write helpers instead of open coding it (Laurent Pinchart) - Remove unnused global variables (Laurent Pinchart) - Remove unnused fields in ps8640 struct (Laurent Pinchart) - Remove commented-out headers (Laurent Pinchart) Changes in v21: - Use devm_i2c_new_dummy_device and fix build issue using deprecated i2c_new_dummy - Fix build issue due missing drm_bridge.h - Do not remove in ps8640_remove device managed resources Changes in v19: - fixed return value of ps8640_probe() when no panel is found Changes in v18: - followed DRM API changes - use DEVICE_ATTR_RO() - remove firmware update code - add SPDX identifier Changes in v17: - remove some unused head files. - add macros for ps8640 pages. - remove ddc_i2c client - add mipi_dsi_device_register_full - remove the manufacturer from the name and i2c_device_id Changes in v16: - Disable ps8640 DSI MCS Function. - Rename gpios name more clearly. - Tune the ps8640 power on sequence. Changes in v15: - Drop drm_connector_(un)register calls from parade ps8640. The main DRM driver mtk_drm_drv now calls drm_connector_register_all() after drm_dev_register() in the mtk_drm_bind() function. That function should iterate over all connectors and call drm_connector_register() for each of them. So, remove drm_connector_(un)register calls from parade ps8640. Changes in v14: - update copyright info. - change bridge_to_ps8640 and connector_to_ps8640 to inline function. - fix some coding style. - use sizeof as array counter. - use drm_get_edid when read edid. - add mutex when firmware updating. Changes in v13: - add const on data, ps8640_write_bytes(struct i2c_client *client, const u8 *data, u16 data_len) - fix PAGE2_SW_REST tyro. - move the buf[3] init to entrance of the function. Changes in v12: - fix hw_chip_id build warning Changes in v11: - Remove depends on I2C, add DRM depends - Reuse ps8640_write_bytes() in ps8640_write_byte() - Use timer check for polling like the routines in - Fix no drm_connector_unregister/drm_connector_cleanup when ps8640_bridge_attach fail - Check the ps8640 hardware id in ps8640_validate_firmware - Remove fw_version check - Move ps8640_validate_firmware before ps8640_enter_bl - Add ddc_i2c unregister when probe fail and ps8640_remove Jitao Shi (2): Documentation: bridge: Add documentation for ps8640 DT properties drm/bridge: Add I2C based driver for ps8640 bridge .../bindings/display/bridge/ps8640.yaml | 112 ++++++ drivers/gpu/drm/bridge/Kconfig | 11 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/parade-ps8640.c | 348 ++++++++++++++++++ 4 files changed, 472 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/ps8640.yaml create mode 100644 drivers/gpu/drm/bridge/parade-ps8640.c