diff options
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/sof/sof-priv.h | 2 | ||||
| -rw-r--r-- | sound/soc/sof/trace.c | 25 |
2 files changed, 27 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 1e85d6f9c5c3..01a6219c326b 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -417,6 +417,8 @@ struct snd_sof_dev { u32 host_offset; u32 dtrace_is_enabled; u32 dtrace_error; + u32 dtrace_draining; + u32 msi_enabled; void *private; /* core does not touch this */ diff --git a/sound/soc/sof/trace.c b/sound/soc/sof/trace.c index a2d89d295f0f..b02520f8e595 100644 --- a/sound/soc/sof/trace.c +++ b/sound/soc/sof/trace.c @@ -43,6 +43,15 @@ static size_t sof_wait_trace_avail(struct snd_sof_dev *sdev, if (ret) return ret; + if (!sdev->dtrace_is_enabled && sdev->dtrace_draining) { + /* + * tracing has ended and all traces have been + * read by client, return EOF + */ + sdev->dtrace_draining = false; + return 0; + } + /* wait for available trace data from FW */ init_waitqueue_entry(&wait, current); set_current_state(TASK_INTERRUPTIBLE); @@ -104,10 +113,23 @@ static ssize_t sof_dfsentry_trace_read(struct file *file, char __user *buffer, return count; } +static int sof_dfsentry_trace_release(struct inode *inode, struct file *file) +{ + struct snd_sof_dfsentry *dfse = inode->i_private; + struct snd_sof_dev *sdev = dfse->sdev; + + /* avoid duplicate traces at next open */ + if (!sdev->dtrace_is_enabled) + sdev->host_offset = 0; + + return 0; +} + static const struct file_operations sof_dfs_trace_fops = { .open = simple_open, .read = sof_dfsentry_trace_read, .llseek = default_llseek, + .release = sof_dfsentry_trace_release, }; static int trace_debugfs_create(struct snd_sof_dev *sdev) @@ -155,6 +177,7 @@ int snd_sof_init_trace_ipc(struct snd_sof_dev *sdev) params.stream_tag = 0; sdev->host_offset = 0; + sdev->dtrace_draining = false; ret = snd_sof_dma_trace_init(sdev, ¶ms.stream_tag); if (ret < 0) { @@ -291,6 +314,8 @@ void snd_sof_release_trace(struct snd_sof_dev *sdev) "error: fail in snd_sof_dma_trace_release %d\n", ret); sdev->dtrace_is_enabled = false; + sdev->dtrace_draining = true; + wake_up(&sdev->trace_sleep); } EXPORT_SYMBOL(snd_sof_release_trace); |