From patchwork Wed Oct 9 08:08:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hui Wang X-Patchwork-Id: 1173679 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 46p6LQ2xmmz9sN1; Wed, 9 Oct 2019 19:09:01 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1iI71l-0003GP-KK; Wed, 09 Oct 2019 08:08:57 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1iI71k-0003GJ-Gi for kernel-team@lists.ubuntu.com; Wed, 09 Oct 2019 08:08:56 +0000 Received: from [123.114.32.250] (helo=localhost.localdomain) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1iI71j-0006vo-L5 for kernel-team@lists.ubuntu.com; Wed, 09 Oct 2019 08:08:56 +0000 From: Hui Wang To: kernel-team@lists.ubuntu.com Subject: [SRU][OEM-B-OSP1][PATCH v2 1/2] UBUNTU: SAUCE: drm/i915: Fix audio power up sequence for gen10+ display Date: Wed, 9 Oct 2019 16:08:35 +0800 Message-Id: <20191009080838.5246-2-hui.wang@canonical.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191009080838.5246-1-hui.wang@canonical.com> References: <20191009080838.5246-1-hui.wang@canonical.com> X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Kai Vehmanen BugLink: https://bugs.launchpad.net/bugs/1847192 On platfroms with gen10+ display, driver must set the enable bit of AUDIO_PIN_BUF_CTL register before transactions with the HDA controller can proceed. Add setting this bit to the audio power up sequence. Failing to do this resulted in errors during display audio codec probe, and failures during resume from suspend. Note: We may also need to disable the bit afterwards, but there are still unresolved issues with that. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111214 Signed-off-by: Kai Vehmanen Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20191003085531.30990-1-kai.vehmanen@linux.intel.com (backported from commit 1580d3cdddbba4a5ef78a04a5289e32844e6af24 git://anongit.freedesktop.org/drm-intel) Signed-off-by: Hui Wang --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_audio.c | 7 ++++++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index dc157a7c92d8..754f82ff98e1 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -8913,6 +8913,9 @@ enum { #define HSW_AUD_CHICKENBIT _MMIO(0x65f10) #define SKL_AUD_CODEC_WAKE_SIGNAL (1 << 15) +#define AUD_PIN_BUF_CTL _MMIO(0x48414) +#define AUD_PIN_BUF_ENABLE REG_BIT(31) + /* * HSW - ICL power wells * diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 187b4bae49e4..1661a8606017 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -793,10 +793,15 @@ static void i915_audio_component_get_power(struct device *kdev) intel_display_power_get(kdev_to_i915(kdev), POWER_DOMAIN_AUDIO); /* Force CDCLK to 2*BCLK as long as we need audio to be powered. */ - if (dev_priv->audio_power_refcount++ == 0) + if (dev_priv->audio_power_refcount++ == 0) { if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) glk_force_audio_cdclk(dev_priv, true); + if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) + I915_WRITE(AUD_PIN_BUF_CTL, + (I915_READ(AUD_PIN_BUF_CTL) | + AUD_PIN_BUF_ENABLE)); + } } static void i915_audio_component_put_power(struct device *kdev)