From patchwork Sat Mar 18 00:58:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sripada, Radhakrishna" X-Patchwork-Id: 13179643 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 87F96C74A5B for ; Sat, 18 Mar 2023 00:59:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5A61910E449; Sat, 18 Mar 2023 00:59:37 +0000 (UTC) Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id C582D10E2AA for ; Sat, 18 Mar 2023 00:59:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679101171; x=1710637171; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=qI/rRb71M2KH+PnrPkRB9lH/MyqiBCQZ/MyZXcHvG1c=; b=D9QPC7KqlFNQQ1tcfoEwSI4yeWfgRMloZ7YwGJCVVBszmm6Ek4PrjxHN 23nJ8g1WCeNoWQvOM0kJTM42sia3CwcrVDXSJZ/ji5o+w0Q5gVdZzPm0D VlQ5hbVbvzTnQd0SneXY/En04jhHKxgN2Cb7ezvWzAHY55HuRFL6KXxuq QRYsVh6CElWE/tjxYnEtLJpXlyQCQhvvXxIW4lUC3bFsJ/wuFZIoX21B3 qXVx2ejHi1felBkyrXYQkgSi4h06NT+NDvq2EgJIkrnzGizdnwjlUUDX0 hdr/HdAKjXLXpwO0dLEiOE9pMjRJ2GqR2rNhgWswQD+b02V8Mngmjg/7G g==; X-IronPort-AV: E=McAfee;i="6600,9927,10652"; a="400971056" X-IronPort-AV: E=Sophos;i="5.98,270,1673942400"; d="scan'208";a="400971056" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2023 17:59:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10652"; a="804301801" X-IronPort-AV: E=Sophos;i="5.98,270,1673942400"; d="scan'208";a="804301801" Received: from invictus.jf.intel.com ([10.165.21.134]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2023 17:59:31 -0700 From: Radhakrishna Sripada To: intel-gfx@lists.freedesktop.org Date: Fri, 17 Mar 2023 17:58:51 -0700 Message-Id: <20230318005852.2303937-4-radhakrishna.sripada@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230318005852.2303937-1-radhakrishna.sripada@intel.com> References: <20230318005852.2303937-1-radhakrishna.sripada@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/4] drm/i915/display/mtl: Fill port width in DDI_BUF_/TRANS_DDI_FUNC_/PORT_BUF_CTL for HDMI 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" From: Ankit Nautiyal MTL requires the PORT_CTL_WIDTH, TRANS_DDI_FUNC_CTL and DDI_BUF_CTL to be filled with 4 lanes for TMDS mode. This patch enables D2D link and fills PORT_WIDTH in appropriate registers. Signed-off-by: Ankit Nautiyal Signed-off-by: Taylor, Clinton A Signed-off-by: Radhakrishna Sripada --- drivers/gpu/drm/i915/display/intel_ddi.c | 48 +++++++++++++++++++++--- drivers/gpu/drm/i915/i915_reg.h | 2 + 2 files changed, 44 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 1efa3b6f4101..a5a0b76c1b10 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -542,6 +542,8 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder, temp |= TRANS_DDI_HDMI_SCRAMBLING; if (crtc_state->hdmi_high_tmds_clock_ratio) temp |= TRANS_DDI_HIGH_TMDS_CHAR_RATE; + if (DISPLAY_VER(dev_priv) >= 14) + temp |= TRANS_DDI_PORT_WIDTH(crtc_state->lane_count); } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) { temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; temp |= (crtc_state->fdi_lanes - 1) << 1; @@ -3142,6 +3144,10 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state, if (has_buf_trans_select(dev_priv)) hsw_prepare_hdmi_ddi_buffers(encoder, crtc_state); + /* e. Enable D2D Link for C10/C20 Phy */ + if (DISPLAY_VER(dev_priv) >= 14) + mtl_ddi_enable_d2d(encoder); + encoder->set_signal_levels(encoder, crtc_state); /* Display WA #1143: skl,kbl,cfl */ @@ -3187,13 +3193,39 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state, * * On ADL_P the PHY link rate and lane count must be programmed but * these are both 0 for HDMI. + * + * But MTL onwards HDMI2.1 is supported and in TMDS mode this + * is always filled with 4 lanes, already set in the crtc_state. + * The same is required to be filled in PORT_BUF_CTL for C10/20 Phy. */ - buf_ctl = dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE; - if (IS_ALDERLAKE_P(dev_priv) && intel_phy_is_tc(dev_priv, phy)) { - drm_WARN_ON(&dev_priv->drm, !intel_tc_port_in_legacy_mode(dig_port)); - buf_ctl |= DDI_BUF_CTL_TC_PHY_OWNERSHIP; + if (DISPLAY_VER(dev_priv) >= 14) { + u32 ddi_buf = 0; + u8 lane_count = mtl_get_port_width(crtc_state->lane_count); + u32 port_buf = 0; + + port_buf |= XELPDP_PORT_WIDTH(lane_count); + + if (intel_bios_encoder_lane_reversal(encoder->devdata)) + port_buf |= XELPDP_PORT_REVERSAL; + + intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(port), 0, port_buf); + + ddi_buf |= DDI_BUF_CTL_ENABLE | + DDI_PORT_WIDTH(lane_count); + + intel_de_write(dev_priv, DDI_BUF_CTL(port), + dig_port->saved_port_bits | ddi_buf); + + /* i. Poll for PORT_BUF_CTL Idle Status == 0, timeout after 100 us */ + intel_wait_ddi_buf_active(dev_priv, port); + } else { + buf_ctl = dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE; + if (IS_ALDERLAKE_P(dev_priv) && intel_phy_is_tc(dev_priv, phy)) { + drm_WARN_ON(&dev_priv->drm, !intel_tc_port_in_legacy_mode(dig_port)); + buf_ctl |= DDI_BUF_CTL_TC_PHY_OWNERSHIP; + } + intel_de_write(dev_priv, DDI_BUF_CTL(port), buf_ctl); } - intel_de_write(dev_priv, DDI_BUF_CTL(port), buf_ctl); intel_wait_ddi_buf_active(dev_priv, port); @@ -3702,7 +3734,11 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder, fallthrough; case TRANS_DDI_MODE_SELECT_DVI: pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI); - pipe_config->lane_count = 4; + if (DISPLAY_VER(dev_priv) >= 14) + pipe_config->lane_count = + ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; + else + pipe_config->lane_count = 4; break; case TRANS_DDI_MODE_SELECT_DP_SST: if (encoder->type == INTEL_OUTPUT_EDP) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 82c9ba8f44b6..4c89f706481b 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6751,6 +6751,8 @@ enum skl_power_gate { #define TRANS_DDI_HDCP_SELECT REG_BIT(5) #define TRANS_DDI_BFI_ENABLE (1 << 4) #define TRANS_DDI_HIGH_TMDS_CHAR_RATE (1 << 4) +#define TRANS_DDI_PORT_WIDTH_MASK REG_GENMASK(3, 1) +#define TRANS_DDI_PORT_WIDTH(width) REG_FIELD_PREP(TRANS_DDI_PORT_WIDTH_MASK, (width) - 1) #define TRANS_DDI_HDMI_SCRAMBLING (1 << 0) #define TRANS_DDI_HDMI_SCRAMBLING_MASK (TRANS_DDI_HDMI_SCRAMBLER_CTS_ENABLE \ | TRANS_DDI_HDMI_SCRAMBLER_RESET_FREQ \