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From: Jaroslav Kysela <perex@perex.cz>
To: Ravulapati Vishnu vardhan rao  <Vishnuvardhanrao.Ravulapati@amd.com>
Cc: Alexander.Deucher@amd.com, Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Takashi Iwai <tiwai@suse.com>,
	Akshu Agrawal <akshu.agrawal@amd.com>,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
	"moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER
	MANAGEM..."  <alsa-devel@alsa-project.org>,
	open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ASoC: amd:Replacing MSI with Legacy IRQ model
Date: Sun, 27 Dec 2020 19:03:28 +0100	[thread overview]
Message-ID: <9f1df5a9-f2ab-33da-3111-c01db88912b4@perex.cz> (raw)
In-Reply-To: <20201222115929.11222-1-Vishnuvardhanrao.Ravulapati@amd.com>

Dne 22. 12. 20 v 12:59 Ravulapati Vishnu vardhan rao napsal(a):
> When we try to play and capture simultaneously we see that
> interrupts are genrated but our handler is not being acknowledged,
> After investigating further more in detail on this issue we found
> that IRQ delivery via MSI from the ACP IP is unreliable and so sometimes
> interrupt generated will not be acknowledged so MSI model shouldn't be used
> and using legacy IRQs will resolve interrupt handling issue.

What is the real culprit? It's hw bug? If not, it would be better to fix the
PCI code or the irq handler.

					Jaroslav

-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.

WARNING: multiple messages have this Message-ID (diff)
From: Jaroslav Kysela <perex@perex.cz>
To: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@amd.com>
Cc: "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER
	MANAGEM..." <alsa-devel@alsa-project.org>,
	open list <linux-kernel@vger.kernel.org>,
	Takashi Iwai <tiwai@suse.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Akshu Agrawal <akshu.agrawal@amd.com>,
	Mark Brown <broonie@kernel.org>,
	Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
	Alexander.Deucher@amd.com,
	Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH] ASoC: amd:Replacing MSI with Legacy IRQ model
Date: Sun, 27 Dec 2020 19:03:28 +0100	[thread overview]
Message-ID: <9f1df5a9-f2ab-33da-3111-c01db88912b4@perex.cz> (raw)
In-Reply-To: <20201222115929.11222-1-Vishnuvardhanrao.Ravulapati@amd.com>

Dne 22. 12. 20 v 12:59 Ravulapati Vishnu vardhan rao napsal(a):
> When we try to play and capture simultaneously we see that
> interrupts are genrated but our handler is not being acknowledged,
> After investigating further more in detail on this issue we found
> that IRQ delivery via MSI from the ACP IP is unreliable and so sometimes
> interrupt generated will not be acknowledged so MSI model shouldn't be used
> and using legacy IRQs will resolve interrupt handling issue.

What is the real culprit? It's hw bug? If not, it would be better to fix the
PCI code or the irq handler.

					Jaroslav

-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.

  parent reply	other threads:[~2020-12-27 18:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-22 11:59 [PATCH] ASoC: amd:Replacing MSI with Legacy IRQ model Ravulapati Vishnu vardhan rao
2020-12-22 11:59 ` Ravulapati Vishnu vardhan rao
2020-12-22 14:15 ` Takashi Iwai
2020-12-22 14:15   ` Takashi Iwai
2020-12-25 12:00   ` RAVULAPATI, VISHNU VARDHAN RAO
2020-12-27 18:03 ` Jaroslav Kysela [this message]
2020-12-27 18:03   ` Jaroslav Kysela
2020-12-27 18:46   ` Takashi Iwai
2020-12-27 18:46     ` Takashi Iwai
2020-12-28 16:12 ` Mark Brown
2020-12-28 16:12   ` Mark Brown

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