From patchwork Fri Jan 6 18:59:03 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: vathsala nagaraju X-Patchwork-Id: 9501659 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 092D5606E0 for ; Fri, 6 Jan 2017 18:59:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F0487284C7 for ; Fri, 6 Jan 2017 18:59:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E4D02284F5; Fri, 6 Jan 2017 18:59:15 +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=-4.2 required=2.0 tests=BAYES_00, 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 706C6284C7 for ; Fri, 6 Jan 2017 18:59:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D8A96E3B6; Fri, 6 Jan 2017 18:59:13 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id EE5946E3B6; Fri, 6 Jan 2017 18:59:10 +0000 (UTC) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga104.jf.intel.com with ESMTP; 06 Jan 2017 10:59:10 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,326,1477983600"; d="scan'208";a="805932744" Received: from vnagaraj-hp-elitedesk-800-g1-twr.iind.intel.com ([10.223.107.106]) by FMSMGA003.fm.intel.com with ESMTP; 06 Jan 2017 10:59:06 -0800 From: vathsala nagaraju To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Date: Sat, 7 Jan 2017 00:29:03 +0530 Message-Id: <1483729143-29640-1-git-send-email-vathsala.nagaraju@intel.com> X-Mailer: git-send-email 1.9.1 Cc: Patil Deepti , Rodrigo Vivi Subject: [Intel-gfx] [PATCH 07/10] drm/i915/psr: set PSR_MASK bits for deep sleep X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Program EDP_PSR_DEBUG_CTL (PSR_MASK) to enable system to go to deep sleep while in psr2.PSR2_STATUS bit 31:28 should report value 8 , if system enters deep sleep state. Also, EDP_FRAMES_BEFORE_SU_ENTRY is set 1 , if not set, flickering is observed on psr2 panel. v2: (Ilia Mirkin) - Remove duplicate bit definition 25:27 v3: rebase v4: rebase Cc: Rodrigo Vivi Cc: Jim Bride Signed-off-by: Vathsala Nagaraju Signed-off-by: Patil Deepti Reviewed-by: Jim Bride --- drivers/gpu/drm/i915/i915_reg.h | 10 +++++++--- drivers/gpu/drm/i915/intel_psr.c | 29 ++++++++++++++++++++--------- 2 files changed, 27 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5ca506a..272a283 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3597,9 +3597,12 @@ enum { #define EDP_PSR_PERF_CNT_MASK 0xffffff #define EDP_PSR_DEBUG_CTL _MMIO(dev_priv->psr_mmio_base + 0x60) -#define EDP_PSR_DEBUG_MASK_LPSP (1<<27) -#define EDP_PSR_DEBUG_MASK_MEMUP (1<<26) -#define EDP_PSR_DEBUG_MASK_HPD (1<<25) +#define EDP_PSR_DEBUG_MASK_MAX_SLEEP (1<<28) +#define EDP_PSR_DEBUG_MASK_LPSP (1<<27) +#define EDP_PSR_DEBUG_MASK_MEMUP (1<<26) +#define EDP_PSR_DEBUG_MASK_HPD (1<<25) +#define EDP_PSR_DEBUG_MASK_DISP_REG_WRITE (1<<16) +#define EDP_PSR_DEBUG_EXIT_ON_PIXEL_UNDERRUN (1<<15) #define EDP_PSR2_CTL _MMIO(0x6f900) #define EDP_PSR2_ENABLE (1<<31) @@ -3614,6 +3617,7 @@ enum { #define EDP_PSR2_FRAME_BEFORE_SU_SHIFT 4 #define EDP_PSR2_FRAME_BEFORE_SU_MASK (0xf<<4) #define EDP_PSR2_IDLE_MASK 0xf +#define EDP_FRAMES_BEFORE_SU_ENTRY (1<<4) #define EDP_PSR2_STATUS_CTL _MMIO(0x6f940) #define EDP_PSR2_STATUS_STATE_MASK (0xf<<28) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 7573c2f..fd151b9 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -338,7 +338,9 @@ static void intel_enable_source_psr2(struct intel_dp *intel_dp) /* FIXME: selective update is probably totally broken because it doesn't * mesh at all with our frontbuffer tracking. And the hw alone isn't * good enough. */ - val |= EDP_PSR2_ENABLE | EDP_SU_TRACK_ENABLE; + val |= EDP_PSR2_ENABLE | + EDP_SU_TRACK_ENABLE | + EDP_FRAMES_BEFORE_SU_ENTRY; if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 5) val |= EDP_PSR2_TP2_TIME_2500; @@ -511,18 +513,27 @@ void intel_psr_enable(struct intel_dp *intel_dp) if (dev_priv->psr.y_cord_support) chicken_trans |= CHICKEN_TRANS_BIT15; I915_WRITE(CHICKEN_TRANS(TRANS_EDP), chicken_trans); + I915_WRITE(EDP_PSR_DEBUG_CTL, + EDP_PSR_DEBUG_MASK_MEMUP | + EDP_PSR_DEBUG_MASK_HPD | + EDP_PSR_DEBUG_MASK_LPSP | + EDP_PSR_DEBUG_MASK_MAX_SLEEP | + EDP_PSR_DEBUG_MASK_DISP_REG_WRITE); } else { /* set up vsc header for psr1 */ hsw_psr_setup_vsc(intel_dp); + /* + * Per Spec: Avoid continuous PSR exit by masking MEMUP + * and HPD. also mask LPSP to avoid dependency on other + * drivers that might block runtime_pm besides + * preventing other hw tracking issues now we can rely + * on frontbuffer tracking. + */ + I915_WRITE(EDP_PSR_DEBUG_CTL, + EDP_PSR_DEBUG_MASK_MEMUP | + EDP_PSR_DEBUG_MASK_HPD | + EDP_PSR_DEBUG_MASK_LPSP); } - /* - * Per Spec: Avoid continuous PSR exit by masking MEMUP and HPD. - * Also mask LPSP to avoid dependency on other drivers that - * might block runtime_pm besides preventing other hw tracking - * issues now we can rely on frontbuffer tracking. - */ - I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP | - EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); /* Enable PSR on the panel */ hsw_psr_enable_sink(intel_dp);