From patchwork Wed Oct 16 14:31:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 13838551 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 6B616D2A521 for ; Wed, 16 Oct 2024 14:31:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0E16B10E71F; Wed, 16 Oct 2024 14:31:49 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="NuXIY1FO"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 52BB810E721 for ; Wed, 16 Oct 2024 14:31:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1729089108; x=1760625108; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=rILhbZatsP5gBsAfURazEO8AFYKP1pdrMZsS0VRjhdo=; b=NuXIY1FOSvuPd/gEb0djTX4YUnuVTn17vFQfXXTcQoexA7gncbcOQLqn gUAkJ0YdwSOSG7IZMr5r+2gV2w51JfFraMs6oMpzMu9jLXCKHZaAjT4PZ J3c1v5TRMtR7M+Dvpd7s9KwoubBHfzVsV3gH3HV2tkfDfc6X689P1HMqi qaVXw/SBWg4I5jxjnd/F/U9qMu9RK9NpR1d6C4oE/gvOZPGvoQ131iTou JZhJRzNiRwhiwu5gMcaARxNAE2zkENPIv/Cpc1spvxMQmtnF5Nn6jeHqv xSkYZsY9HhPHEJHc9YvTsEwM7TCX6G4ptQPoeQTW5CwMh67pQ71Z0zPns A==; X-CSE-ConnectionGUID: iQKit0VpRruYMQFdnQbtaw== X-CSE-MsgGUID: 97zncRSxSr2kZgnE5vf8gA== X-IronPort-AV: E=McAfee;i="6700,10204,11226"; a="28630717" X-IronPort-AV: E=Sophos;i="6.11,208,1725346800"; d="scan'208";a="28630717" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2024 07:31:48 -0700 X-CSE-ConnectionGUID: UctYDYsERz+MOnf5Kx+FaQ== X-CSE-MsgGUID: lfAnJC7dTyi8PXxLz6BS3g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,208,1725346800"; d="scan'208";a="78288381" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.74]) by fmviesa008.fm.intel.com with SMTP; 16 Oct 2024 07:31:46 -0700 Received: by stinkbox (sSMTP sendmail emulation); Wed, 16 Oct 2024 17:31:45 +0300 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Subject: [PATCH 4/9] drm/i915/pfit: Check pfit minimum timings in pre-SKL Date: Wed, 16 Oct 2024 17:31:29 +0300 Message-ID: <20241016143134.26903-5-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241016143134.26903-1-ville.syrjala@linux.intel.com> References: <20241016143134.26903-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 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: Ville Syrjälä Transcoder hdisplay/vdisplay have documented minimum limits when using the panel fitter. Enforce those limits for all pre-SKL platforms. SKL+ handles everything in the unified scaler code instead. Signed-off-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/intel_panel.c | 59 +++++++++++++++++++++- 1 file changed, 58 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c index 89cac3b3fd02..dc843892b01b 100644 --- a/drivers/gpu/drm/i915/display/intel_panel.c +++ b/drivers/gpu/drm/i915/display/intel_panel.c @@ -456,6 +456,24 @@ static int intel_pch_pfit_check_scaling(const struct intel_crtc_state *crtc_stat return 0; } +static int intel_pch_pfit_check_timings(const struct intel_crtc_state *crtc_state) +{ + struct intel_display *display = to_intel_display(crtc_state); + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + const struct drm_display_mode *adjusted_mode = + &crtc_state->hw.adjusted_mode; + + if (adjusted_mode->crtc_vdisplay < 7) { + drm_dbg_kms(display->drm, + "[CRTC:%d:%s] vertical active (%d) below minimum (%d) for pfit\n", + crtc->base.base.id, crtc->base.name, + adjusted_mode->crtc_vdisplay, 7); + return -EINVAL; + } + + return 0; +} + /* adjusted_mode has been preset to be the panel's fixed mode */ static int pch_panel_fitting(struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) @@ -542,6 +560,10 @@ static int pch_panel_fitting(struct intel_crtc_state *crtc_state, if (ret) return ret; + ret = intel_pch_pfit_check_timings(crtc_state); + if (ret) + return ret; + return 0; } @@ -678,6 +700,38 @@ static void i9xx_scale_aspect(struct intel_crtc_state *crtc_state, } } +static int intel_gmch_pfit_check_timings(const struct intel_crtc_state *crtc_state) +{ + struct intel_display *display = to_intel_display(crtc_state); + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + const struct drm_display_mode *adjusted_mode = + &crtc_state->hw.adjusted_mode; + int min; + + if (DISPLAY_VER(display) >= 4) + min = 3; + else + min = 2; + + if (adjusted_mode->crtc_hdisplay < min) { + drm_dbg_kms(display->drm, + "[CRTC:%d:%s] horizontal active (%d) below minimum (%d) for pfit\n", + crtc->base.base.id, crtc->base.name, + adjusted_mode->crtc_hdisplay, min); + return -EINVAL; + } + + if (adjusted_mode->crtc_vdisplay < min) { + drm_dbg_kms(display->drm, + "[CRTC:%d:%s] vertical active (%d) below minimum (%d) for pfit\n", + crtc->base.base.id, crtc->base.name, + adjusted_mode->crtc_vdisplay, min); + return -EINVAL; + } + + return 0; +} + static int gmch_panel_fitting(struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { @@ -772,7 +826,10 @@ static int gmch_panel_fitting(struct intel_crtc_state *crtc_state, crtc_state->gmch_pfit.pgm_ratios = pfit_pgm_ratios; crtc_state->gmch_pfit.lvds_border_bits = border; - return 0; + if ((pfit_control & PFIT_ENABLE) == 0) + return 0; + + return intel_gmch_pfit_check_timings(crtc_state); } int intel_panel_fitting(struct intel_crtc_state *crtc_state,