From patchwork Mon Nov 11 11:10:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kulkarni, Vandita" X-Patchwork-Id: 11236821 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 82F0614E5 for ; Mon, 11 Nov 2019 11:41:23 +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 6B8E821872 for ; Mon, 11 Nov 2019 11:41:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B8E821872 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 ED0386E8C8; Mon, 11 Nov 2019 11:41:22 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7AC9A6E8C5 for ; Mon, 11 Nov 2019 11:41:20 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Nov 2019 03:41:20 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,292,1569308400"; d="scan'208";a="206718552" Received: from vandita-desktop.iind.intel.com ([10.223.74.218]) by orsmga003.jf.intel.com with ESMTP; 11 Nov 2019 03:41:18 -0800 From: Vandita Kulkarni To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Nov 2019 16:40:28 +0530 Message-Id: <20191111111029.9126-9-vandita.kulkarni@intel.com> X-Mailer: git-send-email 2.21.0.5.gaeb582a In-Reply-To: <20191111111029.9126-1-vandita.kulkarni@intel.com> References: <20191111111029.9126-1-vandita.kulkarni@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [RFC-v2 8/9] drm/i915/dsi: Add TE handler for dsi cmd mode. 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: jani.nikula@intel.com, --cc=uma.shankar@intel.com, ville.syrjala@intel.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" In case of dual link, we get the TE on slave. So clear the TE on slave DSI IIR. Signed-off-by: Vandita Kulkarni --- drivers/gpu/drm/i915/i915_irq.c | 62 +++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index f27afde409bf..34a06876a2d7 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2230,6 +2230,62 @@ gen8_de_misc_irq_handler(struct drm_i915_private *dev_priv, u32 iir) DRM_ERROR("Unexpected DE Misc interrupt\n"); } +void gen11_dsi_te_interrupt_handler(struct drm_i915_private *dev_priv, + u32 iir_value) +{ + enum pipe pipe = INVALID_PIPE; + enum transcoder dsi_trans; + enum port port; + u32 val, tmp; + + /* + * Incase of dual link, TE comes from DSI_1 + * this is to check if dual link is enabled + */ + val = I915_READ(TRANS_DDI_FUNC_CTL2(TRANSCODER_DSI_0)); + val &= PORT_SYNC_MODE_ENABLE; + + /* + * if dual link is enabled, then read DSI_0 + * transcoder registers + */ + port = ((iir_value & DSI1_TE && val) || (iir_value & DSI0_TE)) ? + PORT_A : PORT_B; + dsi_trans = (port == PORT_A) ? TRANSCODER_DSI_0 : TRANSCODER_DSI_1; + + /* Check if DSI configured in command mode */ + val = I915_READ(DSI_TRANS_FUNC_CONF(dsi_trans)); + val = (val & OP_MODE_MASK) >> 28; + + if (val) { + DRM_ERROR("DSI trancoder not configured in command mode\n"); + return; + } + + /* Get PIPE for handling VBLANK event */ + val = I915_READ(TRANS_DDI_FUNC_CTL(dsi_trans)); + switch (val & TRANS_DDI_EDP_INPUT_MASK) { + case TRANS_DDI_EDP_INPUT_A_ON: + pipe = PIPE_A; + break; + case TRANS_DDI_EDP_INPUT_B_ONOFF: + pipe = PIPE_B; + break; + case TRANS_DDI_EDP_INPUT_C_ONOFF: + pipe = PIPE_C; + break; + default: + DRM_ERROR("Invalid PIPE\n"); + } + + /* clear TE in dsi IIR */ + port = (iir_value & DSI1_TE) ? PORT_B : PORT_A; + tmp = I915_READ(DSI_INTR_IDENT_REG(port)); + I915_WRITE(DSI_INTR_IDENT_REG(port), tmp); + + drm_handle_vblank(&dev_priv->drm, pipe); +} + static irqreturn_t gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl) { @@ -2294,6 +2350,12 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl) found = true; } + if ((INTEL_GEN(dev_priv) >= 11) && + (iir & (DSI0_TE | DSI1_TE))) { + gen11_dsi_te_interrupt_handler(dev_priv, iir); + found = true; + } + if (!found) DRM_ERROR("Unexpected DE Port interrupt\n"); }