From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/sound/firewire/motu/motu-pcm.c | 142 ++++++++++++++++++++---------------------------
1 files changed, 60 insertions(+), 82 deletions(-)
diff --git a/kernel/sound/firewire/motu/motu-pcm.c b/kernel/sound/firewire/motu/motu-pcm.c
index ab69d7e..8e14373 100644
--- a/kernel/sound/firewire/motu/motu-pcm.c
+++ b/kernel/sound/firewire/motu/motu-pcm.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* motu-pcm.c - a part of driver for MOTU FireWire series
*
* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
- *
- * Licensed under the terms of the GNU General Public License, version 2.
*/
#include <sound/pcm_params.h>
@@ -27,8 +26,7 @@
rate = snd_motu_clock_rates[i];
mode = i / 2;
- pcm_channels = formats->fixed_part_pcm_chunks[mode] +
- formats->differed_part_pcm_chunks[mode];
+ pcm_channels = formats->pcm_chunks[mode];
if (!snd_interval_test(c, pcm_channels))
continue;
@@ -60,8 +58,7 @@
if (!snd_interval_test(r, rate))
continue;
- pcm_channels = formats->fixed_part_pcm_chunks[mode] +
- formats->differed_part_pcm_chunks[mode];
+ pcm_channels = formats->pcm_chunks[mode];
channels.min = min(channels.min, pcm_channels);
channels.max = max(channels.max, pcm_channels);
}
@@ -83,8 +80,7 @@
rate = snd_motu_clock_rates[i];
mode = i / 2;
- pcm_channels = formats->fixed_part_pcm_chunks[mode] +
- formats->differed_part_pcm_chunks[mode];
+ pcm_channels = formats->pcm_chunks[mode];
if (pcm_channels == 0)
continue;
@@ -134,9 +130,8 @@
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_motu *motu = substream->private_data;
- const struct snd_motu_protocol *const protocol = motu->spec->protocol;
+ struct amdtp_domain *d = &motu->domain;
enum snd_motu_clock_source src;
- unsigned int rate;
int err;
err = snd_motu_stream_lock_try(motu);
@@ -153,28 +148,47 @@
if (err < 0)
goto err_locked;
- /*
- * When source of clock is not internal or any PCM streams are running,
- * available sampling rate is limited at current sampling rate.
- */
- err = protocol->get_clock_source(motu, &src);
+ err = snd_motu_protocol_get_clock_source(motu, &src);
if (err < 0)
goto err_locked;
- if (src != SND_MOTU_CLOCK_SOURCE_INTERNAL ||
- amdtp_stream_pcm_running(&motu->tx_stream) ||
- amdtp_stream_pcm_running(&motu->rx_stream)) {
- err = protocol->get_clock_rate(motu, &rate);
+
+ // When source of clock is not internal or any stream is reserved for
+ // transmission of PCM frames, the available sampling rate is limited
+ // at current one.
+ if ((src != SND_MOTU_CLOCK_SOURCE_INTERNAL &&
+ src != SND_MOTU_CLOCK_SOURCE_SPH) ||
+ (motu->substreams_counter > 0 && d->events_per_period > 0)) {
+ unsigned int frames_per_period = d->events_per_period;
+ unsigned int frames_per_buffer = d->events_per_buffer;
+ unsigned int rate;
+
+ err = snd_motu_protocol_get_clock_rate(motu, &rate);
if (err < 0)
goto err_locked;
+
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
+
+ if (frames_per_period > 0) {
+ err = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+ frames_per_period, frames_per_period);
+ if (err < 0)
+ goto err_locked;
+
+ err = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+ frames_per_buffer, frames_per_buffer);
+ if (err < 0)
+ goto err_locked;
+ }
}
snd_pcm_set_sync(substream);
mutex_unlock(&motu->mutex);
- return err;
+ return 0;
err_locked:
mutex_unlock(&motu->mutex);
snd_motu_stream_lock_release(motu);
@@ -190,75 +204,42 @@
return 0;
}
-static int capture_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
+static int pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
{
struct snd_motu *motu = substream->private_data;
- int err;
-
- err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
- params_buffer_bytes(hw_params));
- if (err < 0)
- return err;
+ int err = 0;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
+ unsigned int rate = params_rate(hw_params);
+ unsigned int frames_per_period = params_period_size(hw_params);
+ unsigned int frames_per_buffer = params_buffer_size(hw_params);
+
mutex_lock(&motu->mutex);
- motu->capture_substreams++;
+ err = snd_motu_stream_reserve_duplex(motu, rate,
+ frames_per_period, frames_per_buffer);
+ if (err >= 0)
+ ++motu->substreams_counter;
mutex_unlock(&motu->mutex);
}
- return 0;
-}
-static int playback_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
-{
- struct snd_motu *motu = substream->private_data;
- int err;
-
- err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
- params_buffer_bytes(hw_params));
- if (err < 0)
- return err;
-
- if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
- mutex_lock(&motu->mutex);
- motu->playback_substreams++;
- mutex_unlock(&motu->mutex);
- }
-
- return 0;
+ return err;
}
-static int capture_hw_free(struct snd_pcm_substream *substream)
+static int pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_motu *motu = substream->private_data;
mutex_lock(&motu->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
- motu->capture_substreams--;
+ --motu->substreams_counter;
snd_motu_stream_stop_duplex(motu);
mutex_unlock(&motu->mutex);
- return snd_pcm_lib_free_vmalloc_buffer(substream);
-}
-
-static int playback_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_motu *motu = substream->private_data;
-
- mutex_lock(&motu->mutex);
-
- if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
- motu->playback_substreams--;
-
- snd_motu_stream_stop_duplex(motu);
-
- mutex_unlock(&motu->mutex);
-
- return snd_pcm_lib_free_vmalloc_buffer(substream);
+ return 0;
}
static int capture_prepare(struct snd_pcm_substream *substream)
@@ -267,7 +248,7 @@
int err;
mutex_lock(&motu->mutex);
- err = snd_motu_stream_start_duplex(motu, substream->runtime->rate);
+ err = snd_motu_stream_start_duplex(motu);
mutex_unlock(&motu->mutex);
if (err >= 0)
amdtp_stream_pcm_prepare(&motu->tx_stream);
@@ -280,7 +261,7 @@
int err;
mutex_lock(&motu->mutex);
- err = snd_motu_stream_start_duplex(motu, substream->runtime->rate);
+ err = snd_motu_stream_start_duplex(motu);
mutex_unlock(&motu->mutex);
if (err >= 0)
amdtp_stream_pcm_prepare(&motu->rx_stream);
@@ -327,27 +308,27 @@
{
struct snd_motu *motu = substream->private_data;
- return amdtp_stream_pcm_pointer(&motu->tx_stream);
+ return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->tx_stream);
}
static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_motu *motu = substream->private_data;
- return amdtp_stream_pcm_pointer(&motu->rx_stream);
+ return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->rx_stream);
}
static int capture_ack(struct snd_pcm_substream *substream)
{
struct snd_motu *motu = substream->private_data;
- return amdtp_stream_pcm_ack(&motu->tx_stream);
+ return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->tx_stream);
}
static int playback_ack(struct snd_pcm_substream *substream)
{
struct snd_motu *motu = substream->private_data;
- return amdtp_stream_pcm_ack(&motu->rx_stream);
+ return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->rx_stream);
}
int snd_motu_create_pcm_devices(struct snd_motu *motu)
@@ -355,26 +336,22 @@
static const struct snd_pcm_ops capture_ops = {
.open = pcm_open,
.close = pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = capture_hw_params,
- .hw_free = capture_hw_free,
+ .hw_params = pcm_hw_params,
+ .hw_free = pcm_hw_free,
.prepare = capture_prepare,
.trigger = capture_trigger,
.pointer = capture_pointer,
.ack = capture_ack,
- .page = snd_pcm_lib_get_vmalloc_page,
};
static const struct snd_pcm_ops playback_ops = {
.open = pcm_open,
.close = pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = playback_hw_params,
- .hw_free = playback_hw_free,
+ .hw_params = pcm_hw_params,
+ .hw_free = pcm_hw_free,
.prepare = playback_prepare,
.trigger = playback_trigger,
.pointer = playback_pointer,
.ack = playback_ack,
- .page = snd_pcm_lib_get_vmalloc_page,
};
struct snd_pcm *pcm;
int err;
@@ -387,6 +364,7 @@
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
return 0;
}
--
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