From patchwork Mon Aug 28 06:38:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suraj Kandpal X-Patchwork-Id: 13367592 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 D5FF7C83F12 for ; Mon, 28 Aug 2023 06:40:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F2C2A10E21B; Mon, 28 Aug 2023 06:40:31 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id CDD6410E21B for ; Mon, 28 Aug 2023 06:40:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1693204831; x=1724740831; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CzcYCL2/EX3lpKLy6i6wEKGd68z0CMlC19xk5FI5FaU=; b=DW3QSEO3wQVWiFBqQEO6ZwRWt8kbTf8XNhrUH4ocFFbt/qqdGZMbvdVO VQCTflftCFquJaHrO2rreq6XXJKLcd/HYZPmysd6YOiCeZmQQidIjRpsJ wYVe6mH4c3PjXIcOGGaKimx3tcuh/51j7ma1vYwmYShPAa7Z7/VEGZ60h mt/1jAuey0xaX3m2OkceB5rz/l2J+b2vRDW9ojuTLy5pu7M395Or6t3H7 xWWKQTiS9yqamkg0d1AJa5XysB8GmMEqjTux9PjwfrRx3+lKjRt5PNVQt 4LyDDez48q2OfdKrUOtlDTLbkr4WlNa6c5ki7NExxdoaPsKLTJihhnlPD Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10815"; a="438976978" X-IronPort-AV: E=Sophos;i="6.02,207,1688454000"; d="scan'208";a="438976978" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2023 23:40:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10815"; a="861716884" X-IronPort-AV: E=Sophos;i="6.02,207,1688454000"; d="scan'208";a="861716884" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by orsmga004.jf.intel.com with ESMTP; 27 Aug 2023 23:40:28 -0700 From: Suraj Kandpal To: intel-gfx@lists.freedesktop.org Date: Mon, 28 Aug 2023 12:08:51 +0530 Message-Id: <20230828063850.604048-1-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230828063401.600414-3-suraj.kandpal@intel.com> References: <20230828063401.600414-3-suraj.kandpal@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 2/4] drm/i915/hdcp: Propagate aux info in DP HDCP functions X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" We were propagating dig_port info to dp hdcp2 specific functions. Let us clean that up and send intel_connector in the following functions: intel_dp_hdcp2_wait_for_msg, get_receiver_id_list_rx_info, intel_dp_hdcp2_read_rx_status. This optimises mst scenarios where aux ends up being remote and not stored in dig_port and dig_port can always be derived from intel_connector if needed. --v2 -Fix Typo [Arun] -Dont pass drm_dp core structures [Arun] -Fix commit message styling [Arun] Signed-off-by: Suraj Kandpal Reviewed-by: Arun R Murthy --- drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 39 +++++++++++--------- 1 file changed, 22 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c index 6cd42363837a..59ef77476cb9 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c @@ -331,10 +331,11 @@ static const struct hdcp2_dp_msg_data hdcp2_dp_msg_data[] = { }; static int -intel_dp_hdcp2_read_rx_status(struct intel_digital_port *dig_port, +intel_dp_hdcp2_read_rx_status(struct intel_connector *connector, u8 *rx_status) { - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); + struct drm_i915_private *i915 = to_i915(connector->base.dev); + struct intel_digital_port *dig_port = intel_attached_dig_port(connector); ssize_t ret; ret = drm_dp_dpcd_read(&dig_port->dp.aux, @@ -350,14 +351,14 @@ intel_dp_hdcp2_read_rx_status(struct intel_digital_port *dig_port, } static -int hdcp2_detect_msg_availability(struct intel_digital_port *dig_port, +int hdcp2_detect_msg_availability(struct intel_connector *connector, u8 msg_id, bool *msg_ready) { u8 rx_status; int ret; *msg_ready = false; - ret = intel_dp_hdcp2_read_rx_status(dig_port, &rx_status); + ret = intel_dp_hdcp2_read_rx_status(connector, &rx_status); if (ret < 0) return ret; @@ -383,12 +384,11 @@ int hdcp2_detect_msg_availability(struct intel_digital_port *dig_port, } static ssize_t -intel_dp_hdcp2_wait_for_msg(struct intel_digital_port *dig_port, +intel_dp_hdcp2_wait_for_msg(struct intel_connector *connector, const struct hdcp2_dp_msg_data *hdcp2_msg_data) { - struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); - struct intel_dp *dp = &dig_port->dp; - struct intel_hdcp *hdcp = &dp->attached_connector->hdcp; + struct drm_i915_private *i915 = to_i915(connector->base.dev); + struct intel_hdcp *hdcp = &connector->hdcp; u8 msg_id = hdcp2_msg_data->msg_id; int ret, timeout; bool msg_ready = false; @@ -411,8 +411,8 @@ intel_dp_hdcp2_wait_for_msg(struct intel_digital_port *dig_port, * the timeout at wait for CP_IRQ. */ intel_dp_hdcp_wait_for_cp_irq(hdcp, timeout); - ret = hdcp2_detect_msg_availability(dig_port, - msg_id, &msg_ready); + ret = hdcp2_detect_msg_availability(connector, msg_id, + &msg_ready); if (!msg_ready) ret = -ETIMEDOUT; } @@ -445,6 +445,7 @@ int intel_dp_hdcp2_write_msg(struct intel_connector *connector, u8 *byte = buf; ssize_t ret, bytes_to_write, len; const struct hdcp2_dp_msg_data *hdcp2_msg_data; + struct drm_dp_aux *aux; hdcp2_msg_data = get_hdcp2_dp_msg_data(*byte); if (!hdcp2_msg_data) @@ -452,6 +453,8 @@ int intel_dp_hdcp2_write_msg(struct intel_connector *connector, offset = hdcp2_msg_data->offset; + aux = &dig_port->dp.aux; + /* No msg_id in DP HDCP2.2 msgs */ bytes_to_write = size - 1; byte++; @@ -460,7 +463,7 @@ int intel_dp_hdcp2_write_msg(struct intel_connector *connector, len = bytes_to_write > DP_AUX_MAX_PAYLOAD_BYTES ? DP_AUX_MAX_PAYLOAD_BYTES : bytes_to_write; - ret = drm_dp_dpcd_write(&dig_port->dp.aux, + ret = drm_dp_dpcd_write(aux, offset, (void *)byte, len); if (ret < 0) return ret; @@ -474,8 +477,10 @@ int intel_dp_hdcp2_write_msg(struct intel_connector *connector, } static -ssize_t get_receiver_id_list_rx_info(struct intel_digital_port *dig_port, u32 *dev_cnt, u8 *byte) +ssize_t get_receiver_id_list_rx_info(struct intel_connector *connector, + u32 *dev_cnt, u8 *byte) { + struct intel_digital_port *dig_port = intel_attached_dig_port(connector); ssize_t ret; u8 *rx_info = byte; @@ -500,8 +505,7 @@ int intel_dp_hdcp2_read_msg(struct intel_connector *connector, { struct intel_digital_port *dig_port = intel_attached_dig_port(connector); struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); - struct intel_dp *dp = &dig_port->dp; - struct intel_hdcp *hdcp = &dp->attached_connector->hdcp; + struct intel_hdcp *hdcp = &connector->hdcp; unsigned int offset; u8 *byte = buf; ssize_t ret, bytes_to_recv, len; @@ -515,7 +519,7 @@ int intel_dp_hdcp2_read_msg(struct intel_connector *connector, return -EINVAL; offset = hdcp2_msg_data->offset; - ret = intel_dp_hdcp2_wait_for_msg(dig_port, hdcp2_msg_data); + ret = intel_dp_hdcp2_wait_for_msg(connector, hdcp2_msg_data); if (ret < 0) return ret; @@ -525,7 +529,7 @@ int intel_dp_hdcp2_read_msg(struct intel_connector *connector, byte++; if (msg_id == HDCP_2_2_REP_SEND_RECVID_LIST) { - ret = get_receiver_id_list_rx_info(dig_port, &dev_cnt, byte); + ret = get_receiver_id_list_rx_info(connector, &dev_cnt, byte); if (ret < 0) return ret; @@ -609,7 +613,8 @@ int intel_dp_hdcp2_check_link(struct intel_digital_port *dig_port, u8 rx_status; int ret; - ret = intel_dp_hdcp2_read_rx_status(dig_port, &rx_status); + ret = intel_dp_hdcp2_read_rx_status(connector, + &rx_status); if (ret) return ret;