diff options
| author | Liam Girdwood <liam.r.girdwood@linux.intel.com> | 2019-09-27 15:05:29 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-10-01 18:34:28 +0100 |
| commit | 9a06508bf7824ba34f2e1e9e08df505ac14a44c2 (patch) | |
| tree | 39f7aedf09adba7275a44383417f561e1e407cc4 /sound/soc/sof/debug.c | |
| parent | 2ab4c50f6955514150f83b47b7aee3ba5fe3ac1d (diff) | |
| download | linux-9a06508bf7824ba34f2e1e9e08df505ac14a44c2.tar.bz2 | |
ASoC: SOF: ipc: retain DSP context after FW exception.
Add config option to prevent DSP entering D3 after any FW exception.
This can then be used to dump FW context for debug.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190927200538.660-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/debug.c')
| -rw-r--r-- | sound/soc/sof/debug.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sound/soc/sof/debug.c b/sound/soc/sof/debug.c index 54cd431faab7..b8a4e899154c 100644 --- a/sound/soc/sof/debug.c +++ b/sound/soc/sof/debug.c @@ -461,3 +461,19 @@ void snd_sof_free_debug(struct snd_sof_dev *sdev) debugfs_remove_recursive(sdev->debugfs_root); } EXPORT_SYMBOL_GPL(snd_sof_free_debug); + +void snd_sof_handle_fw_exception(struct snd_sof_dev *sdev) +{ + if (IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_RETAIN_DSP_CONTEXT) || + (sof_core_debug & SOF_DBG_RETAIN_CTX)) { + /* should we prevent DSP entering D3 ? */ + dev_info(sdev->dev, "info: preventing DSP entering D3 state to preserve context\n"); + pm_runtime_get_noresume(sdev->dev); + } + + /* dump vital information to the logs */ + snd_sof_dsp_dbg_dump(sdev, SOF_DBG_REGS | SOF_DBG_MBOX); + snd_sof_ipc_dump(sdev); + snd_sof_trace_notify_for_error(sdev); +} +EXPORT_SYMBOL(snd_sof_handle_fw_exception); |