From patchwork Tue Jul 31 21:07:13 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Navare, Manasi" X-Patchwork-Id: 10551387 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1ECE113B8 for ; Tue, 31 Jul 2018 21:05:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0EA3B286E4 for ; Tue, 31 Jul 2018 21:05:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 02A57283A2; Tue, 31 Jul 2018 21:05:04 +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 9ADA5283A2 for ; Tue, 31 Jul 2018 21:05:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EEB806E3AD; Tue, 31 Jul 2018 21:04:52 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id A613D6E39F for ; Tue, 31 Jul 2018 21:04:51 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 Jul 2018 14:04:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,429,1526367600"; d="scan'208";a="244922938" Received: from labuser-z97x-ud5h.jf.intel.com ([10.54.75.151]) by orsmga005.jf.intel.com with ESMTP; 31 Jul 2018 14:04:36 -0700 From: Manasi Navare To: intel-gfx@lists.freedesktop.org Date: Tue, 31 Jul 2018 14:07:13 -0700 Message-Id: <1533071239-28815-18-git-send-email-manasi.d.navare@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1533071239-28815-1-git-send-email-manasi.d.navare@intel.com> References: <1533071239-28815-1-git-send-email-manasi.d.navare@intel.com> Subject: [Intel-gfx] [PATCH v2 17/23] drm/i915/dp: Enable/Disable DSC in DP Sink 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: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Gaurav K Singh This patch enables decompression support in sink device before link training and disables the same during the DDI disabling. v2:(From Manasi) * Change the enable/disable function to take crtc_state instead of intel_dp as an argument (Manasi) * Use the compression_enable flag as part of crtc_state (Manasi) Cc: Jani Nikula Cc: Ville Syrjala Cc: Anusha Srivatsa Cc: Gaurav K Singh Signed-off-by: Gaurav K Singh Signed-off-by: Manasi Navare Reviewed-by: Anusha Srivatsa --- drivers/gpu/drm/i915/intel_ddi.c | 5 +++++ drivers/gpu/drm/i915/intel_dp.c | 15 +++++++++++++++ drivers/gpu/drm/i915/intel_drv.h | 3 +++ 3 files changed, 23 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 0adc043..5e8c891 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2825,6 +2825,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_ddi_init_dp_buf_reg(encoder); if (!is_mst) intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); + intel_dp_sink_set_decompression_state(intel_dp, crtc_state, + DP_DECOMPRESSION_EN); intel_dp_start_link_train(intel_dp); if (port != PORT_A || INTEL_GEN(dev_priv) >= 9) intel_dp_stop_link_train(intel_dp); @@ -3154,6 +3156,9 @@ static void intel_disable_ddi_dp(struct intel_encoder *encoder, intel_edp_drrs_disable(intel_dp, old_crtc_state); intel_psr_disable(intel_dp, old_crtc_state); intel_edp_backlight_off(old_conn_state); + /* Disable the decompression in DP Sink */ + intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state, + ~DP_DECOMPRESSION_EN); } static void intel_disable_ddi_hdmi(struct intel_encoder *encoder, diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index dc0a3c2..1a8329c 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2925,6 +2925,21 @@ static bool downstream_hpd_needs_d0(struct intel_dp *intel_dp) intel_dp->downstream_ports[0] & DP_DS_PORT_HPD; } +void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, + int state) +{ + int ret; + + if (!crtc_state->dsc_params.compression_enable) + return; + + ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_DSC_ENABLE, state); + if (ret < 0) + DRM_DEBUG_KMS("Failed to %s sink decompression state\n", + state == DP_DECOMPRESSION_EN ? "enable" : "disable"); +} + /* If the sink supports it, try to set the power state appropriately */ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) { diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 33cc777..ced62e0 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1691,6 +1691,9 @@ void intel_dp_stop_link_train(struct intel_dp *intel_dp); int intel_dp_retrain_link(struct intel_encoder *encoder, struct drm_modeset_acquire_ctx *ctx); void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode); +void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, + int state); void intel_dp_encoder_reset(struct drm_encoder *encoder); void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder); void intel_dp_encoder_destroy(struct drm_encoder *encoder);