From patchwork Thu Feb 22 20:28:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dhinakaran Pandiyan X-Patchwork-Id: 10236347 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 DEB4860349 for ; Thu, 22 Feb 2018 20:29:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CD6D328E1C for ; Thu, 22 Feb 2018 20:29:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C1CED28E20; Thu, 22 Feb 2018 20:29:02 +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 2874728E29 for ; Thu, 22 Feb 2018 20:29:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 17F336E11C; Thu, 22 Feb 2018 20:29:01 +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 432B36E11C for ; Thu, 22 Feb 2018 20:29:00 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Feb 2018 12:28:59 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,378,1515484800"; d="scan'208";a="22310702" Received: from dk-thinkpad-x260.jf.intel.com (HELO dk-ThinkPad-X260.fios-router.home) ([10.54.75.38]) by fmsmga002.fm.intel.com with ESMTP; 22 Feb 2018 12:28:59 -0800 From: Dhinakaran Pandiyan To: intel-gfx@lists.freedesktop.org Date: Thu, 22 Feb 2018 12:28:50 -0800 Message-Id: <20180222202850.30221-1-dhinakaran.pandiyan@intel.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180222185445.GB5453@intel.com> References: <20180222185445.GB5453@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3] drm/i915/psr: New power domain for AUX IO. 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: Dhinakaran Pandiyan , Rodrigo Vivi Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP PSR on CNL requires AUX IO wells to be kept on and the existing AUX domain for AUX-A enables DC_OFF well too. This is not required, so add a new AUX_IO_A domain for AUX-A to allow DC states to remain enabled. Other AUX channels re-use the existing AUX domains as they do need power well 2. v3: Extract aux domain selection into a function (Ville) v2: Add AUX IO domain only for AUX-A Rebased on top of Ville's AUX series. Cc: Imre Deak Cc: Rodrigo Vivi Cc: Ville Syrjälä Suggested-by: Imre Deak Signed-off-by: Dhinakaran Pandiyan Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_display.h | 1 + drivers/gpu/drm/i915/intel_dp.c | 2 +- drivers/gpu/drm/i915/intel_drv.h | 1 + drivers/gpu/drm/i915/intel_psr.c | 38 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_runtime_pm.c | 3 +++ 5 files changed, 44 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h index f5733a2576e7..4e7418b345bc 100644 --- a/drivers/gpu/drm/i915/intel_display.h +++ b/drivers/gpu/drm/i915/intel_display.h @@ -186,6 +186,7 @@ enum intel_display_power_domain { POWER_DOMAIN_AUX_C, POWER_DOMAIN_AUX_D, POWER_DOMAIN_AUX_F, + POWER_DOMAIN_AUX_IO_A, POWER_DOMAIN_GMBUS, POWER_DOMAIN_MODESET, POWER_DOMAIN_GT_IRQ, diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 005735a7fc29..b78b9972ebae 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1331,7 +1331,7 @@ intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) return ret; } -static enum aux_ch intel_aux_ch(struct intel_dp *intel_dp) +enum aux_ch intel_aux_ch(struct intel_dp *intel_dp) { struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 5132f6a58c6d..bcd6dc9fb13d 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1685,6 +1685,7 @@ bool intel_dp_read_dpcd(struct intel_dp *intel_dp); int intel_dp_link_required(int pixel_clock, int bpp); int intel_dp_max_data_rate(int max_link_clock, int max_lanes); bool intel_digital_port_connected(struct intel_encoder *encoder); +enum aux_ch intel_aux_ch(struct intel_dp *intel_dp); /* intel_dp_aux_backlight.c */ int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector); diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 2ef374f936b9..03814f7bc2d3 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -56,6 +56,40 @@ #include "intel_drv.h" #include "i915_drv.h" +static inline enum intel_display_power_domain +psr_aux_domain(struct intel_dp *intel_dp) +{ + /* CNL HW requires corresponding AUX IOs to be powered up for PSR, AUX-A + * does not require the driver to disable DC states, but the rest do. + * Although PSR is enabled only on Port A currently, let's do this + * correctly for other ports too. + */ + return intel_dp->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A : + intel_dp->aux_power_domain; +} + +static void psr_power_get(struct intel_dp *intel_dp) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); + + if (INTEL_GEN(dev_priv) < 10) + return; + + intel_display_power_get(dev_priv, psr_aux_domain(intel_dp)); +} + +static void psr_power_put(struct intel_dp *intel_dp) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); + + if (INTEL_GEN(dev_priv) < 10) + return; + + intel_display_power_put(dev_priv, psr_aux_domain(intel_dp)); +} + static bool vlv_is_psr_active_on_pipe(struct drm_device *dev, int pipe) { struct drm_i915_private *dev_priv = to_i915(dev); @@ -459,6 +493,8 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp, enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; u32 chicken; + psr_power_get(intel_dp); + if (dev_priv->psr.psr2_support) { chicken = PSR2_VSC_ENABLE_PROG_HEADER; if (dev_priv->psr.y_cord_support) @@ -617,6 +653,8 @@ static void hsw_psr_disable(struct intel_dp *intel_dp, else WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE); } + + psr_power_put(intel_dp); } /** diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index b7924feb9f27..53ea564f971e 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -130,6 +130,8 @@ intel_display_power_domain_str(enum intel_display_power_domain domain) return "AUX_D"; case POWER_DOMAIN_AUX_F: return "AUX_F"; + case POWER_DOMAIN_AUX_IO_A: + return "AUX_IO_A"; case POWER_DOMAIN_GMBUS: return "GMBUS"; case POWER_DOMAIN_INIT: @@ -1853,6 +1855,7 @@ void intel_display_power_put(struct drm_i915_private *dev_priv, BIT_ULL(POWER_DOMAIN_INIT)) #define CNL_DISPLAY_AUX_A_POWER_DOMAINS ( \ BIT_ULL(POWER_DOMAIN_AUX_A) | \ + BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \ BIT_ULL(POWER_DOMAIN_INIT)) #define CNL_DISPLAY_AUX_B_POWER_DOMAINS ( \ BIT_ULL(POWER_DOMAIN_AUX_B) | \