From patchwork Mon Apr 9 03:41:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vidya Srinivas X-Patchwork-Id: 10330343 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8513660236 for ; Mon, 9 Apr 2018 03:44:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 77BC428895 for ; Mon, 9 Apr 2018 03:44:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6C8C92889C; Mon, 9 Apr 2018 03:44:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E605928895 for ; Mon, 9 Apr 2018 03:44:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 551696E277; Mon, 9 Apr 2018 03:44:34 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F6076E271 for ; Mon, 9 Apr 2018 03:44:31 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Apr 2018 20:44:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,426,1517904000"; d="scan'208";a="44560856" Received: from vsrini4-ubuntu.iind.intel.com ([10.223.161.6]) by fmsmga004.fm.intel.com with ESMTP; 08 Apr 2018 20:44:30 -0700 From: Vidya Srinivas To: intel-gfx@lists.freedesktop.org Date: Mon, 9 Apr 2018 09:11:09 +0530 Message-Id: <1523245273-30264-11-git-send-email-vidya.srinivas@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1523245273-30264-1-git-send-email-vidya.srinivas@intel.com> References: <1523245273-30264-1-git-send-email-vidya.srinivas@intel.com> Subject: [Intel-gfx] [PATCH v1 10/14] drm/i915: Display WA 827 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vidya Srinivas MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Display WA 827 applies to GEN9 (excluede GLK) and CNL. Switching the plane format from NV12 to RGB and leaving system idle results in display underrun and corruption. WA: Set the bit 15 & bit 19 to 1b in the CLKGATE_DIS_PSL register for the pipe in which NV12 plane is enabled. v2: Addressed review comments from Maarten and Juha-Pekka Heikkila. Added reviewed by from Juha-Pekka Heikkila. v3: Rebased the series Reviewed-by: Juha-Pekka Heikkila Signed-off-by: Chandra Konduru Signed-off-by: Nabendu Maiti Signed-off-by: Vidya Srinivas --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_display.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b3a6428..1f858e2 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3824,6 +3824,9 @@ enum { #define _CLKGATE_DIS_PSL_A 0x46520 #define _CLKGATE_DIS_PSL_B 0x46524 #define _CLKGATE_DIS_PSL_C 0x46528 +#define DUPS1_GATING_DIS (1 << 15) +#define DUPS2_GATING_DIS (1 << 19) +#define DUPS3_GATING_DIS (1 << 23) #define DPF_GATING_DIS (1 << 10) #define DPF_RAM_GATING_DIS (1 << 9) #define DPFR_GATING_DIS (1 << 8) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 616bb6f..62d65d1 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -488,6 +488,21 @@ static const struct intel_limit intel_limits_bxt = { .p2 = { .p2_slow = 1, .p2_fast = 20 }, }; +static void +skl_wa_clkgate(struct drm_i915_private *dev_priv, int pipe, bool enable) +{ + if (IS_SKYLAKE(dev_priv)) + return; + + if (enable) + I915_WRITE(CLKGATE_DIS_PSL(pipe), + DUPS1_GATING_DIS | DUPS2_GATING_DIS); + else + I915_WRITE(CLKGATE_DIS_PSL(pipe), + I915_READ(CLKGATE_DIS_PSL(pipe)) & + ~(DUPS1_GATING_DIS | DUPS2_GATING_DIS)); +} + static bool needs_modeset(const struct drm_crtc_state *state) { @@ -5103,6 +5118,8 @@ static bool hsw_post_update_enable_ips(const struct intel_crtc_state *old_crtc_s static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state) { struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc); + struct drm_device *dev = crtc->base.dev; + struct drm_i915_private *dev_priv = to_i915(dev); struct drm_atomic_state *old_state = old_crtc_state->base.state; struct intel_crtc_state *pipe_config = intel_atomic_get_new_crtc_state(to_intel_atomic_state(old_state), @@ -5125,6 +5142,7 @@ static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state) to_intel_plane(primary)); struct intel_plane_state *old_primary_state = to_intel_plane_state(old_pri_state); + struct drm_framebuffer *fb = primary_state->base.fb; intel_fbc_post_update(crtc); @@ -5132,6 +5150,14 @@ static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state) (needs_modeset(&pipe_config->base) || !old_primary_state->base.visible)) intel_post_enable_primary(&crtc->base, pipe_config); + + /* Display WA 827 */ + if ((INTEL_GEN(dev_priv) == 9 && !IS_GEMINILAKE(dev_priv)) || + IS_CANNONLAKE(dev_priv)) { + if (fb && fb->format->format == DRM_FORMAT_NV12) + skl_wa_clkgate(dev_priv, crtc->pipe, false); + } + } } @@ -5158,6 +5184,14 @@ static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state, to_intel_plane(primary)); struct intel_plane_state *old_primary_state = to_intel_plane_state(old_pri_state); + struct drm_framebuffer *fb = primary_state->base.fb; + + /* Display WA 827 */ + if ((INTEL_GEN(dev_priv) == 9 && !IS_GEMINILAKE(dev_priv)) || + IS_CANNONLAKE(dev_priv)) { + if (fb && fb->format->format == DRM_FORMAT_NV12) + skl_wa_clkgate(dev_priv, crtc->pipe, true); + } intel_fbc_pre_update(crtc, pipe_config, primary_state); /*