[ALSA] Use posix clock monotonic for PCM and timer timestamps

[linux-2.6] / sound / core / pcm_native.c

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 6245bdaffa6855f17cef396bbc74bacffed2124e..cdeae7c46e3b05a889a3064d9c57377f8995e39c 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -598,9 +598,9 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
                if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_MMAP)
                        status->tstamp = runtime->status->tstamp;
                else
-                       getnstimeofday(&status->tstamp);
+                       snd_pcm_gettime(runtime, &status->tstamp);
        } else
-               getnstimeofday(&status->tstamp);
+               snd_pcm_gettime(runtime, &status->tstamp);
        status->appl_ptr = runtime->control->appl_ptr;
        status->hw_ptr = runtime->status->hw_ptr;
        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
@@ -688,7 +688,7 @@ static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream)
        if (runtime->trigger_master == NULL)
                return;
        if (runtime->trigger_master == substream) {
-               getnstimeofday(&runtime->trigger_tstamp);
+               snd_pcm_gettime(runtime, &runtime->trigger_tstamp);
        } else {
                snd_pcm_trigger_tstamp(runtime->trigger_master);
                runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp;
@@ -2519,6 +2519,21 @@ static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
                return -EFAULT;
        return 0;
 }
+
+static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg)
+{
+       struct snd_pcm_runtime *runtime = substream->runtime;
+       int arg;
+       
+       if (get_user(arg, _arg))
+               return -EFAULT;
+       if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST)
+               return -EINVAL;
+       runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY;
+       if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC)
+               runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC;
+       return 0;
+}
                
 static int snd_pcm_common_ioctl1(struct file *file,
                                 struct snd_pcm_substream *substream,
@@ -2531,8 +2546,8 @@ static int snd_pcm_common_ioctl1(struct file *file,
                return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0;
        case SNDRV_PCM_IOCTL_INFO:
                return snd_pcm_info_user(substream, arg);
-       case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */
-               return 0;
+       case SNDRV_PCM_IOCTL_TTSTAMP:
+               return snd_pcm_tstamp(substream, arg);
        case SNDRV_PCM_IOCTL_HW_REFINE:
                return snd_pcm_hw_refine_user(substream, arg);
        case SNDRV_PCM_IOCTL_HW_PARAMS: