[PATCH AUTOSEL for 4.9 134/281] ASoC: Intel: Skylake: Disable clock gating during firmware and library download

[Sasha Levin]

From: Pardha Saradhi K <pardha.saradhi.kesaprag...@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.kesaprag...@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.k...@intel.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.si...@intel.com>
Acked-By: Vinod Koul <vinod.k...@intel.com>
Signed-off-by: Mark Brown <broo...@kernel.org>
Signed-off-by: Sasha Levin <alexander.le...@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/skylake/skl-messages.c
index 805b7f2173f3..78472c908ae9 100644
--- a/sound/soc/intel/skylake/skl-messages.c
+++ b/sound/soc/intel/skylake/skl-messages.c
@@ -331,7 +331,11 @@ int skl_resume_dsp(struct skl *skl)
        if (skl->skl_sst->is_first_boot == true)
                return 0;
 
+       /* disable dynamic clock gating during fw and lib download */
+       ctx->enable_miscbdcge(ctx->dev, false);
+
        ret = skl_dsp_wake(ctx->dsp);
+       ctx->enable_miscbdcge(ctx->dev, true);
        if (ret < 0)
                return ret;
 
diff --git a/sound/soc/intel/skylake/skl-pcm.c 
b/sound/soc/intel/skylake/skl-pcm.c
index 58c728662600..2fd213cd9a40 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -1191,7 +1191,11 @@ static int skl_platform_soc_probe(struct 
snd_soc_platform *platform)
                        return -EIO;
                }
 
+               /* disable dynamic clock gating during fw and lib download */
+               skl->skl_sst->enable_miscbdcge(platform->dev, false);
+
                ret = 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;
-- 
2.14.1