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 A2597CCF9EE for ; Mon, 27 Oct 2025 16:30:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EA07D10E50E; Mon, 27 Oct 2025 16:30:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="BQ5TwMkK"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9E92910E4FA; Mon, 27 Oct 2025 16:29:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761582596; x=1793118596; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=YaUj3q5e+tSaN01xHj4nTSimKecEbzB1OTvmPUwIw4s=; b=BQ5TwMkKmAf5eGbgf3rASvuzbcypS1As4bds4O0Ybbf1EmDl8YLNRGFA J9ljssE7tzrHStobB6A28Rr/nfGSbkpMtx9fHFj7LVjc3rOPW4MM7SBHL XCurJur99C4IUBco4cxGtZwS0zlZ2sE8YeucEXhAsIdEDIC2krOMPV4rq UDkFoP8tDN4eiL3O84zPNpFMcqUVCSqvNj8tTHvxYvFARaenrPVcfHi0H 0P2ZzuGTgYg+0edXjRUg/e2TFr1FBtClYKOw28B69o9U//EB9DfX1wgf2 oWXc0AU9IuQRPpWrfapAg9YsGuNPuTMxjrd1g/PkniCeKoVI+ky1XU8sF A==; X-CSE-ConnectionGUID: iaX+1ynySgaDXBMqqOfqBQ== X-CSE-MsgGUID: 77CU8veIRMqNHr9TaP8NiQ== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="81299354" X-IronPort-AV: E=Sophos;i="6.19,259,1754982000"; d="scan'208";a="81299354" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Oct 2025 09:29:56 -0700 X-CSE-ConnectionGUID: sZ0MgC5mTSi4WRO4JaVtQA== X-CSE-MsgGUID: bG9jyvC7TviGarePMMO0LA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,259,1754982000"; d="scan'208";a="184785629" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmviesa007.fm.intel.com with ESMTP; 27 Oct 2025 09:29:54 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Cc: intel-xe@lists.freedesktop.org, mitulkumar.ajitkumar.golani@intel.com, ankit.k.nautiyal@intel.com, uma.shankar@intel.com, ville.syrjala@linux.intel.com Subject: [PATCH v8 12/22] drm/i915/vrr: Write DC balance params to hw registers Date: Mon, 27 Oct 2025 21:59:17 +0530 Message-ID: <20251027162927.2655581-13-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251027162927.2655581-1-mitulkumar.ajitkumar.golani@intel.com> References: <20251027162927.2655581-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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" Write DC Balance parameters to hw registers. --v2: - Update commit header. - Separate crtc_state params from this patch. (Ankit) --v3: - Write registers at compute config. - Update condition for write. --v4: - Address issue with state checker. --v5: - Initialise some more dc balance register while enabling VRR. --v6: - FLIPLINE_CFG need to be configure at last, as it is double buffer arming point. --v7: - Initialise and reset live value of vmax and vmin as well. Signed-off-by: Mitul Golani Reviewed-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_vrr.c | 53 ++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 6168caff9cf0..2d418f45569f 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -764,10 +764,43 @@ static void intel_vrr_tg_enable(const struct intel_crtc_state *crtc_state, { struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + enum pipe pipe = crtc->pipe; u32 vrr_ctl; intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), TRANS_PUSH_EN); + if (crtc_state->vrr.dc_balance.enable) { + intel_de_write(display, TRANS_VRR_DCB_ADJ_VMAX_CFG(cpu_transcoder), + VRR_DCB_ADJ_VMAX(crtc_state->vrr.vmax - 1)); + intel_de_write(display, TRANS_VRR_DCB_ADJ_VMAX_CFG_LIVE(cpu_transcoder), + VRR_DCB_ADJ_VMAX(crtc_state->vrr.vmax - 1)); + intel_de_write(display, TRANS_VRR_DCB_VMAX(cpu_transcoder), + VRR_DCB_VMAX(crtc_state->vrr.vmax - 1)); + intel_de_write(display, TRANS_VRR_DCB_VMAX_LIVE(cpu_transcoder), + VRR_DCB_VMAX(crtc_state->vrr.vmax - 1)); + intel_de_write(display, TRANS_VRR_DCB_FLIPLINE(cpu_transcoder), + VRR_DCB_FLIPLINE(crtc_state->vrr.flipline - 1)); + intel_de_write(display, TRANS_VRR_DCB_FLIPLINE_LIVE(cpu_transcoder), + VRR_DCB_FLIPLINE(crtc_state->vrr.flipline - 1)); + intel_de_write(display, TRANS_VRR_DCB_ADJ_FLIPLINE_CFG_LIVE(cpu_transcoder), + VRR_DCB_ADJ_FLIPLINE(crtc_state->vrr.flipline - 1)); + intel_de_write(display, PIPEDMC_DCB_VMIN(pipe), + crtc_state->vrr.dc_balance.vmin - 1); + intel_de_write(display, PIPEDMC_DCB_VMAX(pipe), + crtc_state->vrr.dc_balance.vmax - 1); + intel_de_write(display, PIPEDMC_DCB_MAX_INCREASE(pipe), + crtc_state->vrr.dc_balance.max_increase); + intel_de_write(display, PIPEDMC_DCB_MAX_DECREASE(pipe), + crtc_state->vrr.dc_balance.max_decrease); + intel_de_write(display, PIPEDMC_DCB_GUARDBAND(pipe), + crtc_state->vrr.dc_balance.guardband); + intel_de_write(display, PIPEDMC_DCB_SLOPE(pipe), + crtc_state->vrr.dc_balance.slope); + intel_de_write(display, PIPEDMC_DCB_VBLANK(pipe), + crtc_state->vrr.dc_balance.vblank_target); + } + vrr_ctl = VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state); /* @@ -785,6 +818,8 @@ static void intel_vrr_tg_disable(const struct intel_crtc_state *old_crtc_state) { struct intel_display *display = to_intel_display(old_crtc_state); enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder; + struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); + enum pipe pipe = crtc->pipe; intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder), trans_vrr_ctl(old_crtc_state)); @@ -795,6 +830,24 @@ static void intel_vrr_tg_disable(const struct intel_crtc_state *old_crtc_state) drm_err(display->drm, "Timed out waiting for VRR live status to clear\n"); intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), 0); + + if (old_crtc_state->vrr.dc_balance.enable) { + intel_de_write(display, PIPEDMC_DCB_VMIN(pipe), 0); + intel_de_write(display, PIPEDMC_DCB_VMAX(pipe), 0); + intel_de_write(display, PIPEDMC_DCB_MAX_INCREASE(pipe), 0); + intel_de_write(display, PIPEDMC_DCB_MAX_DECREASE(pipe), 0); + intel_de_write(display, PIPEDMC_DCB_GUARDBAND(pipe), 0); + intel_de_write(display, PIPEDMC_DCB_SLOPE(pipe), 0); + intel_de_write(display, PIPEDMC_DCB_VBLANK(pipe), 0); + intel_de_write(display, TRANS_VRR_DCB_ADJ_VMAX_CFG_LIVE(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_ADJ_FLIPLINE_CFG_LIVE(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_VMAX_LIVE(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_FLIPLINE_LIVE(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_ADJ_VMAX_CFG(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_ADJ_FLIPLINE_CFG(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_VMAX(cpu_transcoder), 0); + intel_de_write(display, TRANS_VRR_DCB_FLIPLINE(cpu_transcoder), 0); + } } void intel_vrr_enable(const struct intel_crtc_state *crtc_state) -- 2.48.1