mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
72 lines
2.9 KiB
Diff
72 lines
2.9 KiB
Diff
From 83251570f16ec848694dac016cbdb55b1d28496d Mon Sep 17 00:00:00 2001
|
|
From: popcornmix <popcornmix@gmail.com>
|
|
Date: Mon, 29 Apr 2019 19:16:14 +0100
|
|
Subject: [PATCH 431/806] Revert "bcm2835: interpolate audio delay"
|
|
|
|
commit fb4b9f02986fcb5ae751106ef9b027806b5dd750 upstream.
|
|
|
|
This reverts commit fb8cc99f05687ca5565dc53a7ee0dd86aefad952.
|
|
---
|
|
.../vc04_services/bcm2835-audio/bcm2835-pcm.c | 12 +-----------
|
|
.../staging/vc04_services/bcm2835-audio/bcm2835.h | 1 -
|
|
2 files changed, 1 insertion(+), 12 deletions(-)
|
|
|
|
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
|
|
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
|
|
@@ -11,7 +11,7 @@
|
|
/* hardware definition */
|
|
static const struct snd_pcm_hardware snd_bcm2835_playback_hw = {
|
|
.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
|
- SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BATCH),
|
|
+ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
|
|
.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
|
|
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
|
|
.rate_min = 8000,
|
|
@@ -81,8 +81,6 @@ void bcm2835_playback_fifo(struct bcm283
|
|
alsa_stream->pos %= alsa_stream->buffer_size;
|
|
}
|
|
|
|
- alsa_stream->interpolate_start = ktime_get_ns();
|
|
-
|
|
if (alsa_stream->substream) {
|
|
if (new_period)
|
|
snd_pcm_period_elapsed(alsa_stream->substream);
|
|
@@ -308,7 +306,6 @@ static int snd_bcm2835_pcm_prepare(struc
|
|
alsa_stream->buffer_size = snd_pcm_lib_buffer_bytes(substream);
|
|
alsa_stream->period_size = snd_pcm_lib_period_bytes(substream);
|
|
alsa_stream->pos = 0;
|
|
- alsa_stream->interpolate_start = ktime_get_ns();
|
|
|
|
audio_debug("buffer_size=%d, period_size=%d pos=%d frame_bits=%d\n",
|
|
alsa_stream->buffer_size, alsa_stream->period_size,
|
|
@@ -400,19 +397,12 @@ snd_bcm2835_pcm_pointer(struct snd_pcm_s
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct bcm2835_alsa_stream *alsa_stream = runtime->private_data;
|
|
- u64 now = ktime_get_ns();
|
|
|
|
audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0,
|
|
frames_to_bytes(runtime, runtime->status->hw_ptr),
|
|
frames_to_bytes(runtime, runtime->control->appl_ptr),
|
|
alsa_stream->pos);
|
|
|
|
- /* Give userspace better delay reporting by interpolating between GPU
|
|
- * notifications, assuming audio speed is close enough to the clock
|
|
- * used for ktime */
|
|
- if (alsa_stream->interpolate_start && alsa_stream->interpolate_start < now)
|
|
- runtime->delay = -(int)div_u64((now - alsa_stream->interpolate_start) * runtime->rate, 1000000000);
|
|
-
|
|
return snd_pcm_indirect_playback_pointer(substream,
|
|
&alsa_stream->pcm_indirect,
|
|
alsa_stream->pos);
|
|
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
|
|
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
|
|
@@ -133,7 +133,6 @@ struct bcm2835_alsa_stream {
|
|
unsigned int pos;
|
|
unsigned int buffer_size;
|
|
unsigned int period_size;
|
|
- u64 interpolate_start;
|
|
|
|
atomic_t retrieved;
|
|
struct bcm2835_audio_instance *instance;
|