From patchwork Fri Mar 22 10:29:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Hogander, Jouni" X-Patchwork-Id: 13599930 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 2595CC47DD9 for ; Fri, 22 Mar 2024 10:30:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5DAAE10F3C1; Fri, 22 Mar 2024 10:30:32 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="lOEiRnSw"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id EC12410E9B2 for ; Fri, 22 Mar 2024 10:30:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1711103428; x=1742639428; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=oIypIZaCK9C4MgS2elxR9SzKDb54vkvGwnXUbLrKOOg=; b=lOEiRnSwxNe3t8ePw8L4QANcqAGayqCC7AqjOA10DZGL1R2+Kwu4jg3T ABldQUCdVuM5VNe9FcJ0hPwJ5roUqjAJVtl+/Q+jOgsDuRs33uvabxpMa qpQOi1C9IbGj8u7gqaVMzyQY9UA0iE2gDTcCyWhNo/yW6Zbz3eHljy0HT zlUeShlMXWYRPCstaK6zueMZyLcQP1OFaWbsRCB7cBN9D13yEHy+R+6dJ tyh7KloWyeDfF506fZT3sH2YKxaXt1I8ve9c0FZJgft3grRD6a9GzWnFs EuV5I6H4JpUgYrGL44yj7Ldn3Y5B7Gnx/N0kUEsuqPDMdbuRmA4GBjPW4 A==; X-IronPort-AV: E=McAfee;i="6600,9927,11020"; a="17292855" X-IronPort-AV: E=Sophos;i="6.07,145,1708416000"; d="scan'208";a="17292855" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2024 03:30:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,145,1708416000"; d="scan'208";a="19559332" Received: from opopa-mobl1.ger.corp.intel.com (HELO jhogande-mobl1.intel.com) ([10.252.37.152]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2024 03:30:26 -0700 From: =?utf-8?q?Jouni_H=C3=B6gander?= To: intel-gfx@lists.freedesktop.org Cc: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , Animesh Manna , Arun R Murthy , =?utf-8?q?Jouni_H=C3=B6gander?= Subject: [PATCH v5 4/5] drm/i915/psr: Enable ALPM on source side for eDP Panel replay Date: Fri, 22 Mar 2024 12:29:59 +0200 Message-Id: <20240322103000.103332-5-jouni.hogander@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240322103000.103332-1-jouni.hogander@intel.com> References: <20240322103000.103332-1-jouni.hogander@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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" Enable ALPM AUX-Less on source side for Panel Replay eDP. Also write all calculated AUX-Less configuration values accordingly. Enabling it on sink side is in upcoming patch. Bspec: 71477 v5: - mention enable is only on source side in commit message v4: - add comment explaining why AUX less is enabled on eDP panel replay without any extra checks v3: - do not use alpm_ctl as uninitialized variable v2: - do not set AUX-Wake related bits for AUX-Less case - drop switch to active latency - add SLEEP_HOLD_TIME_50_SYMBOLS - add PORT_ALPM_CTL_MAX_PHY_SWING_HOLD Signed-off-by: Jouni Högander --- drivers/gpu/drm/i915/display/intel_psr.c | 47 ++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 9be8bf3fe651..62d16455243f 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1721,14 +1721,43 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp) struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); enum transcoder cpu_transcoder = intel_dp->psr.transcoder; struct intel_psr *psr = &intel_dp->psr; + u32 alpm_ctl; if (DISPLAY_VER(dev_priv) < 20) return; - intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder), - ALPM_CTL_EXTENDED_FAST_WAKE_ENABLE | - ALPM_CTL_ALPM_ENTRY_CHECK(psr->alpm_parameters.check_entry_lines) | - ALPM_CTL_EXTENDED_FAST_WAKE_TIME(psr->alpm_parameters.fast_wake_lines)); + /* + * Panel Replay on eDP is always using ALPM aux less. I.e. no need to + * check panel support at this point. + */ + if (intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp)) { + alpm_ctl = ALPM_CTL_ALPM_ENABLE | + ALPM_CTL_ALPM_AUX_LESS_ENABLE | + ALPM_CTL_AUX_LESS_SLEEP_HOLD_TIME_50_SYMBOLS; + + intel_de_write(dev_priv, PORT_ALPM_CTL(cpu_transcoder), + PORT_ALPM_CTL_ALPM_AUX_LESS_ENABLE | + PORT_ALPM_CTL_MAX_PHY_SWING_SETUP(15) | + PORT_ALPM_CTL_MAX_PHY_SWING_HOLD(0) | + PORT_ALPM_CTL_SILENCE_PERIOD( + psr->alpm_parameters.silence_period_sym_clocks)); + + intel_de_write(dev_priv, PORT_ALPM_LFPS_CTL(cpu_transcoder), + PORT_ALPM_LFPS_CTL_LFPS_CYCLE_COUNT(10) | + PORT_ALPM_LFPS_CTL_LFPS_HALF_CYCLE_DURATION( + psr->alpm_parameters.lfps_half_cycle_num_of_syms) | + PORT_ALPM_LFPS_CTL_FIRST_LFPS_HALF_CYCLE_DURATION( + psr->alpm_parameters.lfps_half_cycle_num_of_syms) | + PORT_ALPM_LFPS_CTL_LAST_LFPS_HALF_CYCLE_DURATION( + psr->alpm_parameters.lfps_half_cycle_num_of_syms)); + } else { + alpm_ctl = ALPM_CTL_EXTENDED_FAST_WAKE_ENABLE | + ALPM_CTL_EXTENDED_FAST_WAKE_TIME(psr->alpm_parameters.fast_wake_lines); + } + + alpm_ctl |= ALPM_CTL_ALPM_ENTRY_CHECK(psr->alpm_parameters.check_entry_lines); + + intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder), alpm_ctl); } static void intel_psr_enable_source(struct intel_dp *intel_dp, @@ -1996,6 +2025,16 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp) intel_snps_phy_update_psr_power_state(&dp_to_dig_port(intel_dp)->base, false); + /* Panel Replay on eDP is always using ALPM aux less. */ + if (intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp)) { + intel_de_rmw(dev_priv, ALPM_CTL(cpu_transcoder), + ALPM_CTL_ALPM_ENABLE | + ALPM_CTL_ALPM_AUX_LESS_ENABLE, 0); + + intel_de_rmw(dev_priv, PORT_ALPM_CTL(cpu_transcoder), + PORT_ALPM_CTL_ALPM_AUX_LESS_ENABLE, 0); + } + /* Disable PSR on Sink */ drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);