[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 a96733a5beb88aa6cdd556d7c2f19d8797f0bd51..cdeae7c46e3b05a889a3064d9c57377f8995e39c 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1,6 +1,6 @@
 /*
  *  Digital Audio (PCM) abstract layer
- *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  *
  *
  *   This program is free software; you can redistribute it and/or modify
@@ -595,12 +595,12 @@ int snd_pcm_status(struct snd_pcm_substream *substream,
        status->trigger_tstamp = runtime->trigger_tstamp;
        if (snd_pcm_running(substream)) {
                snd_pcm_update_hw_ptr(substream);
-               if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP)
+               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;
@@ -1487,7 +1487,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream)
 
        snd_pcm_stream_lock_irq(substream);
        /* resume pause */
-       if (runtime->status->state == SNDRV_PCM_STATE_PAUSED)
+       if (substream->runtime->status->state == SNDRV_PCM_STATE_PAUSED)
                snd_pcm_pause(substream, 0);
 
        /* pre-start/stop - all running streams are changed to DRAINING state */
@@ -1787,12 +1787,18 @@ static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params,
 static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
                                  48000, 64000, 88200, 96000, 176400, 192000 };
 
+const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = {
+       .count = ARRAY_SIZE(rates),
+       .list = rates,
+};
+
 static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params,
                                struct snd_pcm_hw_rule *rule)
 {
        struct snd_pcm_hardware *hw = rule->private;
        return snd_interval_list(hw_param_interval(params, rule->var),
-                                ARRAY_SIZE(rates), rates, hw->rates);
+                                snd_pcm_known_rates.count,
+                                snd_pcm_known_rates.list, hw->rates);
 }              
 
 static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params,
@@ -2513,6 +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,
@@ -2525,8 +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: