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 EA4DDCEACCE for ; Fri, 14 Nov 2025 20:53:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AF55110EB20; Fri, 14 Nov 2025 20:53:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="k3giNvYB"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 570EC10EB22; Fri, 14 Nov 2025 20:53:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763153608; x=1794689608; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=uE3uNGQ2Q0XxacWlVU/mFxKbVNrLcSyFLIq4D3ryT3w=; b=k3giNvYBQh3WIPF3WFM/Ruq1VtImkDFVsyaXJNxAQpqXNKplyVGXGb+X lS4OBaIOH2RGfR0NWxz07MiiioLiZ0AW1mVYRYUMUAPRZLlAJuvRCb6xN j+hSbecmMn5qyVmWGUbWlh88sB9+5DBMsasG4IMgmVcszSFZvOB3j1dMs zIiuSZ862mnLzCXKip+WdFHgQi3ncnkDKJqJf6imWcxKkdSNwUP3U4EkN s7TIGAbNY07zAmiNNaPcHSU+uSe7h0O7ZRcMa+ABgzj4zgjzepHSgcsoj zfq03hNbQgL/q+SpBUbwlW+zKuijw0iFNvshEzcmgyrKLKhaJKNe064FK g==; X-CSE-ConnectionGUID: s+/soV+BQr+vBdg1zM2WCA== X-CSE-MsgGUID: tIyh+AX9QvCvqUHHaHmWbg== X-IronPort-AV: E=McAfee;i="6800,10657,11613"; a="67859852" X-IronPort-AV: E=Sophos;i="6.19,305,1754982000"; d="scan'208";a="67859852" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Nov 2025 12:53:28 -0800 X-CSE-ConnectionGUID: j4Mj1FDmTEiY5Op43P44fQ== X-CSE-MsgGUID: elfBxdk+R+qsVghJSp+xIw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,305,1754982000"; d="scan'208";a="227214213" Received: from dnelso2-mobl.amr.corp.intel.com (HELO [192.168.1.16]) ([10.124.220.50]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Nov 2025 12:53:24 -0800 From: Gustavo Sousa Date: Fri, 14 Nov 2025 17:52:10 -0300 Subject: [PATCH v5 3/8] 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: <20251114-xe3p_lpd-basic-enabling-v5-3-c183388367f4@intel.com> References: <20251114-xe3p_lpd-basic-enabling-v5-0-c183388367f4@intel.com> In-Reply-To: <20251114-xe3p_lpd-basic-enabling-v5-0-c183388367f4@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 , Imre Deak , 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) v3: - Simplify the code by using NULL check for dig_port to avoid using intel_encoder_is_dig_port(). (Imre) Cc: Imre Deak 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 | 16 +++++++++++++++- drivers/gpu/drm/i915/display/intel_display_types.h | 1 + 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 002ccd47856d..11ceb9355b75 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -5372,6 +5372,17 @@ 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 069967114bd9..5071a0ae5235 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -1810,7 +1810,17 @@ 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) { /* @@ -1894,6 +1904,10 @@ bool intel_encoder_is_snps(struct intel_encoder *encoder) bool intel_encoder_is_tc(struct intel_encoder *encoder) { struct intel_display *display = to_intel_display(encoder); + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); + + if (dig_port && 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 38702a9e0f50..7b08d618776c 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1936,6 +1936,7 @@ 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