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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>,
        Sanyog Kale <sanyog.r.kale@intel.com>,
        Guneshwor Singh <guneshwor.o.singh@intel.com>,
        Mark Brown <broonie@kernel.org>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.15 036/124] ASoC: Intel: Skylake: Disable clock
 gating during firmware and library download
Thread-Topic: [PATCH AUTOSEL for 4.15 036/124] ASoC: Intel: Skylake: Disable
 clock gating during firmware and library download
Thread-Index: AQHTv5mau8zdsZy+vUGYb9Twz898fg==
Date:   Mon, 19 Mar 2018 15:47:36 +0000
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From: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>

[ Upstream commit d5cc0a1fcbb5ddbef9fdd4c4a978da3254ddbf37 ]

During firmware and library download, sometimes it is observed that
firmware and library download is timed-out resulting into probe failure.

This patch disables dynamic clock gating while firmware and library
download.

Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 sound/soc/intel/skylake/skl-messages.c | 4 ++++
 sound/soc/intel/skylake/skl-pcm.c      | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/sound/soc/intel/skylake/skl-messages.c b/sound/soc/intel/skyla=
ke/skl-messages.c
index 61b5bfa79d13..97572fb38387 100644
--- a/sound/soc/intel/skylake/skl-messages.c
+++ b/sound/soc/intel/skylake/skl-messages.c
@@ -404,7 +404,11 @@ int skl_resume_dsp(struct skl *skl)
 	if (skl->skl_sst->is_first_boot =3D=3D true)
 		return 0;
=20
+	/* disable dynamic clock gating during fw and lib download */
+	ctx->enable_miscbdcge(ctx->dev, false);
+
 	ret =3D skl_dsp_wake(ctx->dsp);
+	ctx->enable_miscbdcge(ctx->dev, true);
 	if (ret < 0)
 		return ret;
=20
diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/sk=
l-pcm.c
index 1dd97479e0c0..32b30f99d2c8 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -1343,7 +1343,11 @@ static int skl_platform_soc_probe(struct snd_soc_pla=
tform *platform)
 			return -EIO;
 		}
=20
+		/* disable dynamic clock gating during fw and lib download */
+		skl->skl_sst->enable_miscbdcge(platform->dev, false);
+
 		ret =3D ops->init_fw(platform->dev, skl->skl_sst);
+		skl->skl_sst->enable_miscbdcge(platform->dev, true);
 		if (ret < 0) {
 			dev_err(platform->dev, "Failed to boot first fw: %d\n", ret);
 			return ret;
--=20
2.14.1