linux-kernel - [PATCH AUTOSEL 6.1 04/53] ASoC: SOF: Add FW state to debugfs

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Message-Id: <20230116140154.114951-4-sashal@kernel.org>
Date:   Mon, 16 Jan 2023 09:01:04 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Curtis Malainey <cujomalainey@...omium.org>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, lgirdwood@...il.com,
        yung-chuan.liao@...ux.intel.com, daniel.baluta@....com,
        perex@...ex.cz, tiwai@...e.com,
        sound-open-firmware@...a-project.org, alsa-devel@...a-project.org
Subject: [PATCH AUTOSEL 6.1 04/53] ASoC: SOF: Add FW state to debugfs

From: Curtis Malainey <cujomalainey@...omium.org>

[ Upstream commit 9a9134fd56f6ba614ff7b2b3b0bac0bf1d0dc0c9 ]

Allow system health detection mechanisms to check the FW state, this
will allow them to check if the FW is in its "crashed" state going
forward to help automatically diagnose driver state.

Signed-off-by: Curtis Malainey <cujomalainey@...omium.org>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>
Link: https://lore.kernel.org/r/20221220125629.8469-4-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/sof/debug.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/debug.c b/sound/soc/sof/debug.c
index d9a3ce7b69e1..ade0507328af 100644
--- a/sound/soc/sof/debug.c
+++ b/sound/soc/sof/debug.c
@@ -353,7 +353,9 @@ int snd_sof_dbg_init(struct snd_sof_dev *sdev)
 			return err;
 	}
 
-	return 0;
+	return snd_sof_debugfs_buf_item(sdev, &sdev->fw_state,
+					sizeof(sdev->fw_state),
+					"fw_state", 0444);
 }
 EXPORT_SYMBOL_GPL(snd_sof_dbg_init);
 
-- 
2.35.1