From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 C6337C43381 for ; Fri, 15 Mar 2019 16:58:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A19AE218A1 for ; Fri, 15 Mar 2019 16:58:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729875AbfCOQ6c (ORCPT ); Fri, 15 Mar 2019 12:58:32 -0400 Received: from mga17.intel.com ([192.55.52.151]:39359 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729817AbfCOQ61 (ORCPT ); Fri, 15 Mar 2019 12:58:27 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Mar 2019 09:58:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,482,1544515200"; d="scan'208";a="155397290" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 15 Mar 2019 09:58:25 -0700 From: Heikki Krogerus To: Hans de Goede Cc: Andy Shevchenko , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: [PATCH 12/12] drm/i915: Associate the ACPI connector nodes with connector entries Date: Fri, 15 Mar 2019 19:58:00 +0300 Message-Id: <20190315165800.5058-13-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190315165800.5058-1-heikki.krogerus@linux.intel.com> References: <20190315165800.5058-1-heikki.krogerus@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Intel platforms we know that the ACPI connector device node order will follow the order the driver (i915) decides. The decision is made using the Intel OpRegion intel_opregion.c), though, the driver does not know that the values it supplies are used for associating a device node for the connectors, and assigning address for them. In reality it means we end up violating ACPI specification (we supply dynamic information to objects that are defined static, for example _ADR), however, it makes associating the connector nodes with the connector entries straightforward (one-on-one mapping). Signed-off-by: Heikki Krogerus --- drivers/gpu/drm/i915/intel_display.c | 41 ++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ccb616351bba..512dc7ad0604 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -15304,6 +15304,46 @@ static int intel_initial_commit(struct drm_device *dev) return ret; } +/* NOTE: The connector order must be final before this is called. */ +static void intel_assign_connector_fwnodes(struct drm_device *dev) +{ + struct drm_connector_list_iter conn_iter; + struct device *kdev = &dev->pdev->dev; + struct fwnode_handle *fwnode = NULL; + struct drm_connector *connector; + struct acpi_device *adev; + + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + /* Always getting the next, even when the last was not used. */ + fwnode = device_get_next_child_node(kdev, fwnode); + if (!fwnode) + break; + + switch (connector->connector_type) { + case DRM_MODE_CONNECTOR_LVDS: + case DRM_MODE_CONNECTOR_eDP: + case DRM_MODE_CONNECTOR_DSI: + /* + * Integrated displays use a specific address 0x1f on + * most Intel platforms, but not all of them. + */ + adev = acpi_find_child_device(ACPI_COMPANION(kdev), + 0x1f, 0); + if (adev) { + connector->fwnode = acpi_fwnode_handle(adev); + break; + } + /* fallthrough */ + default: + connector->fwnode = fwnode; + break; + } + + } + drm_connector_list_iter_end(&conn_iter); +} + int intel_modeset_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); @@ -15406,6 +15446,7 @@ int intel_modeset_init(struct drm_device *dev) drm_modeset_lock_all(dev); intel_modeset_setup_hw_state(dev, dev->mode_config.acquire_ctx); + intel_assign_connector_fwnodes(dev); drm_modeset_unlock_all(dev); for_each_intel_crtc(dev, crtc) { -- 2.20.1