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 X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58A44C433E0 for ; Wed, 17 Feb 2021 21:18:11 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 10C0564E6C for ; Wed, 17 Feb 2021 21:18:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 10C0564E6C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 902D96E20E; Wed, 17 Feb 2021 21:18:10 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id D8D8B6E20E; Wed, 17 Feb 2021 21:18:08 +0000 (UTC) IronPort-SDR: AbCAuua5yRcMTDIsNz2IuckeGElj4gJo2qJgKdqEWHuQgYb/1duc+dzrzuVp/0fbVYx+2YewaU d5q1yORjieKQ== X-IronPort-AV: E=McAfee;i="6000,8403,9898"; a="163103096" X-IronPort-AV: E=Sophos;i="5.81,185,1610438400"; d="scan'208";a="163103096" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Feb 2021 13:18:08 -0800 IronPort-SDR: 6Ub+DP3lNmpif5ozsQYhhvDtBAGT0G3RCtKhn99MYdT2niEzd4eqFF11dIwVg8x7Omzw09npj/ iv9QKiUDnaNQ== X-IronPort-AV: E=Sophos;i="5.81,185,1610438400"; d="scan'208";a="494426430" Received: from ideak-desk.fi.intel.com ([10.237.68.141]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Feb 2021 13:18:05 -0800 Date: Wed, 17 Feb 2021 23:18:02 +0200 From: Imre Deak To: Lyude Paul Message-ID: <20210217211802.GC558393@ideak-desk.fi.intel.com> References: <20210217025337.1929015-1-lyude@redhat.com> <20210217180016.1937401-1-lyude@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210217180016.1937401-1-lyude@redhat.com> Subject: Re: [Intel-gfx] [PATCH v4] drm/i915/gen9bc: Handle TGP PCH during suspend/resume 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: , Reply-To: imre.deak@intel.com Cc: David Airlie , intel-gfx@lists.freedesktop.org, open list , "open list:DRM DRIVERS" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Wed, Feb 17, 2021 at 01:00:16PM -0500, Lyude Paul wrote: > From: Tejas Upadhyay > > For Legacy S3 suspend/resume GEN9 BC needs to enable and > setup TGP PCH. > > v2: > * Move Wa_14010685332 into it's own function - vsyrjala > * Add TODO comment about figuring out if we can move this workaround - imre > v3: > * Rename cnp_irq_post_reset() to cnp_display_clock_wa() > * Add TODO item mentioning we need to clarify which platforms this > workaround applies to > * Just use ibx_irq_reset() in gen8_irq_reset(). This code should be > functionally equivalent on gen9 bc to the code v2 added > * Drop icp_hpd_irq_setup() call in spt_hpd_irq_setup(), this looks to be > more or less identical to spt_hpd_irq_setup() minus additionally enabling > one port. Will update i915 to use icp_hpd_irq_setup() for ICP in a > separate patch. > v4: > * Revert Wa_14010685332 system list in comments to how it was before > * Add back HAS_PCH_SPLIT() check before calling ibx_irq_reset() > > Cc: Matt Roper > Signed-off-by: Tejas Upadhyay > Signed-off-by: Lyude Paul Thanks, looks ok to me: Reviewed-by: Imre Deak nit: cnp_display_clock_gating_wa() would be an even better name, could be renamed while applying. > --- > drivers/gpu/drm/i915/i915_irq.c | 49 +++++++++++++++++++++------------ > 1 file changed, 32 insertions(+), 17 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c > index 98145a7f28a4..9b56a8f81e1a 100644 > --- a/drivers/gpu/drm/i915/i915_irq.c > +++ b/drivers/gpu/drm/i915/i915_irq.c > @@ -3040,6 +3040,24 @@ static void valleyview_irq_reset(struct drm_i915_private *dev_priv) > spin_unlock_irq(&dev_priv->irq_lock); > } > > +static void cnp_display_clock_wa(struct drm_i915_private *dev_priv) > +{ > + struct intel_uncore *uncore = &dev_priv->uncore; > + > + /* > + * Wa_14010685332:cnp/cmp,tgp,adp > + * TODO: Clarify which platforms this applies to > + * TODO: Figure out if this workaround can be applied in the s0ix suspend/resume handlers as > + * on earlier platforms and whether the workaround is also needed for runtime suspend/resume > + */ > + if (INTEL_PCH_TYPE(dev_priv) == PCH_CNP || > + (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && INTEL_PCH_TYPE(dev_priv) < PCH_DG1)) { > + intel_uncore_rmw(uncore, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, > + SBCLK_RUN_REFCLK_DIS); > + intel_uncore_rmw(uncore, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0); > + } > +} > + > static void gen8_irq_reset(struct drm_i915_private *dev_priv) > { > struct intel_uncore *uncore = &dev_priv->uncore; > @@ -3063,6 +3081,8 @@ static void gen8_irq_reset(struct drm_i915_private *dev_priv) > > if (HAS_PCH_SPLIT(dev_priv)) > ibx_irq_reset(dev_priv); > + > + cnp_display_clock_wa(dev_priv); > } > > static void gen11_display_irq_reset(struct drm_i915_private *dev_priv) > @@ -3104,15 +3124,7 @@ static void gen11_display_irq_reset(struct drm_i915_private *dev_priv) > if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) > GEN3_IRQ_RESET(uncore, SDE); > > - /* Wa_14010685332:cnp/cmp,tgp,adp */ > - if (INTEL_PCH_TYPE(dev_priv) == PCH_CNP || > - (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && > - INTEL_PCH_TYPE(dev_priv) < PCH_DG1)) { > - intel_uncore_rmw(uncore, SOUTH_CHICKEN1, > - SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS); > - intel_uncore_rmw(uncore, SOUTH_CHICKEN1, > - SBCLK_RUN_REFCLK_DIS, 0); > - } > + cnp_display_clock_wa(dev_priv); > } > > static void gen11_irq_reset(struct drm_i915_private *dev_priv) > @@ -3764,9 +3776,19 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) > } > } > > +static void icp_irq_postinstall(struct drm_i915_private *dev_priv) > +{ > + struct intel_uncore *uncore = &dev_priv->uncore; > + u32 mask = SDE_GMBUS_ICP; > + > + GEN3_IRQ_INIT(uncore, SDE, ~mask, 0xffffffff); > +} > + > static void gen8_irq_postinstall(struct drm_i915_private *dev_priv) > { > - if (HAS_PCH_SPLIT(dev_priv)) > + if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) > + icp_irq_postinstall(dev_priv); > + else if (HAS_PCH_SPLIT(dev_priv)) > ibx_irq_postinstall(dev_priv); > > gen8_gt_irq_postinstall(&dev_priv->gt); > @@ -3775,13 +3797,6 @@ static void gen8_irq_postinstall(struct drm_i915_private *dev_priv) > gen8_master_intr_enable(dev_priv->uncore.regs); > } > > -static void icp_irq_postinstall(struct drm_i915_private *dev_priv) > -{ > - struct intel_uncore *uncore = &dev_priv->uncore; > - u32 mask = SDE_GMBUS_ICP; > - > - GEN3_IRQ_INIT(uncore, SDE, ~mask, 0xffffffff); > -} > > static void gen11_irq_postinstall(struct drm_i915_private *dev_priv) > { > -- > 2.29.2 > _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx