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 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 4755CCCF9F8 for ; Sat, 8 Nov 2025 00:06:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0B0B010EBB0; Sat, 8 Nov 2025 00:06:48 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="FouaUghV"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id D61F810EBB8; Sat, 8 Nov 2025 00:06:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1762560407; x=1794096407; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=FE1mrWq9OuVp2Ac3cmT9bULjSw7ewcSLTFcRw8rzZuY=; b=FouaUghVZ4bQ9bx8HnbX0UOpW09Ipf8kJqou443nwmI/1xGZS+4CJaSt 0ZNsSUzg17X9W1RyD5jwl77l9k4wIWFrx5IQHv2/2Lpq6hHk1QYMtzqmT AhVBFY1vPB5dcN3TmJSCGLFBVL0SCyN0lwX3SjtBNGvxQ4vW8JW6PF8Oz DYU7KAY84FOCCKYSg9NrKEXWNtz1m6zHYk2d0+Dn/hcReXD6A9cPsl7oD 152z1MWP57sDx4tgeq9uK4nQW4NG1rcKDTGWZUyezXtpYtl9NycPB/BBx lWRnQ9fvGOiymBVSKg0flM4jaMNX65Bv4VHIzg1AdXC6L5sxtZFnIUnb5 w==; X-CSE-ConnectionGUID: GioxpYahSZC9xhHAydGaFQ== X-CSE-MsgGUID: 4fLEbJUyRl2/zEsz9FhxFQ== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="64621264" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="64621264" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Nov 2025 16:06:46 -0800 X-CSE-ConnectionGUID: 4PBBtLdwTlaoTdebx2Anag== X-CSE-MsgGUID: +C+qor8oRD6EMzbXzyhv4w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,288,1754982000"; d="scan'208";a="218822607" Received: from mgerlach-mobl1.amr.corp.intel.com (HELO [192.168.1.16]) ([10.124.222.137]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Nov 2025 16:06:43 -0800 From: Gustavo Sousa Date: Fri, 07 Nov 2025 21:05:37 -0300 Subject: [PATCH v4 04/11] drm/i915/display: Handle dedicated external ports in intel_encoder_is_tc() MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251107-xe3p_lpd-basic-enabling-v4-4-ab3367f65f15@intel.com> References: <20251107-xe3p_lpd-basic-enabling-v4-0-ab3367f65f15@intel.com> In-Reply-To: <20251107-xe3p_lpd-basic-enabling-v4-0-ab3367f65f15@intel.com> To: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: Ankit Nautiyal , Dnyaneshwar Bhadane , Gustavo Sousa , =?utf-8?q?Jouni_H=C3=B6gander?= , Juha-pekka Heikkila , Luca Coelho , Lucas De Marchi , Matt Atwood , Matt Roper , Ravi Kumar Vodapalli , Shekhar Chauhan , Vinod Govindapillai , Jani Nikula X-Mailer: b4 0.15-dev X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Starting with Xe3p_LPD, the VBT has a new field, called in the driver "dedicated_external", which tells that a Type-C capable port is physically connected to a PHY outside of the Type-C subsystem. When that's the case, the driver must not do the extra Type-C programming for that port. Update intel_encoder_is_tc() to check for that case. While at it, add a note to intel_phy_is_tc() to remind us that it is about whether the respective port is a Type-C capable port rather than the PHY itself. (Maybe it would be a nice idea to rename intel_phy_is_tc()?) Note that this was handled with a new bool member added to struct intel_digital_port instead of having querying the VBT directly because VBT memory is freed (intel_bios_driver_remove) before encoder cleanup (intel_ddi_encoder_destroy), which would cause an oops to happen when the latter calls intel_encoder_is_tc(). This could be fixed by keeping VBT data around longer, but that's left for a follow-up work, if deemed necessary. v2: - Drop printing info about dedicated external, now that we are doing it when parsing the VBT. (Jani) - Add a FIXME comment on the code explaining why we need to store dedicated_external in struct intel_digital_port. (Jani) Cc: Jani Nikula Cc: Shekhar Chauhan Signed-off-by: Gustavo Sousa --- drivers/gpu/drm/i915/display/intel_ddi.c | 11 +++++++++++ drivers/gpu/drm/i915/display/intel_display.c | 19 ++++++++++++++++++- drivers/gpu/drm/i915/display/intel_display_types.h | 1 + 3 files changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 733ef4559131..d9aaeafd1570 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -5376,6 +5376,17 @@ void intel_ddi_init(struct intel_display *display, goto err; } + /* + * FIXME: We currently need to store dedicated_external because devdata + * does not live long enough for when intel_encoder_is_tc() is called on + * the unbind path. This needs to be fixed by making sure that the VBT + * data is kept long enough, so that + * intel_bios_encoder_is_dedicated_external() can be called directly + * from intel_encoder_is_tc(). + */ + if (intel_bios_encoder_is_dedicated_external(devdata)) + dig_port->dedicated_external = true; + if (intel_encoder_is_tc(encoder)) { bool is_legacy = !intel_bios_encoder_supports_typec_usb(devdata) && diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 25986bd8fbdd..431f7f030a9b 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -1800,7 +1800,17 @@ bool intel_phy_is_combo(struct intel_display *display, enum phy phy) return false; } -/* Prefer intel_encoder_is_tc() */ +/* + * This function returns true if the DDI port respective to the PHY enumeration + * is a Type-C capable port. + * + * Depending on the VBT, the port might be configured + * as a "dedicated external" port, meaning that actual physical PHY is outside + * of the Type-C subsystem and, as such, not really a "Type-C PHY". + * + * Prefer intel_encoder_is_tc(), especially if you really need to know if we + * are dealing with Type-C connections. + */ bool intel_phy_is_tc(struct intel_display *display, enum phy phy) { /* @@ -1885,6 +1895,13 @@ bool intel_encoder_is_tc(struct intel_encoder *encoder) { struct intel_display *display = to_intel_display(encoder); + if (intel_encoder_is_dig_port(encoder)) { + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); + + if (dig_port->dedicated_external) + return false; + } + return intel_phy_is_tc(display, intel_encoder_to_phy(encoder)); } diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 00600134bda0..8bf392bc0d5d 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1937,6 +1937,7 @@ struct intel_digital_port { bool lane_reversal; bool ddi_a_4_lanes; bool release_cl2_override; + bool dedicated_external; u8 max_lanes; /* Used for DP and ICL+ TypeC/DP and TypeC/HDMI ports. */ enum aux_ch aux_ch; -- 2.51.0