From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/sound/firewire/fireface/ff-pcm.c | 159 ++++++++++++++++++++++++++--------------------------
1 files changed, 79 insertions(+), 80 deletions(-)
diff --git a/kernel/sound/firewire/fireface/ff-pcm.c b/kernel/sound/firewire/fireface/ff-pcm.c
index bf47f9e..f978cc2 100644
--- a/kernel/sound/firewire/fireface/ff-pcm.c
+++ b/kernel/sound/firewire/fireface/ff-pcm.c
@@ -1,17 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* ff-pcm.c - a part of driver for RME Fireface series
*
* Copyright (c) 2015-2017 Takashi Sakamoto
- *
- * Licensed under the terms of the GNU General Public License, version 2.
*/
#include "ff.h"
-
-static inline unsigned int get_multiplier_mode_with_index(unsigned int index)
-{
- return ((int)index - 1) / 2;
-}
static int hw_rule_rate(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
@@ -24,10 +18,16 @@
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1
};
- unsigned int i, mode;
+ unsigned int i;
for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
- mode = get_multiplier_mode_with_index(i);
+ enum snd_ff_stream_mode mode;
+ int err;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ continue;
+
if (!snd_interval_test(c, pcm_channels[mode]))
continue;
@@ -49,10 +49,16 @@
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1
};
- unsigned int i, mode;
+ unsigned int i;
for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
- mode = get_multiplier_mode_with_index(i);
+ enum snd_ff_stream_mode mode;
+ int err;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ continue;
+
if (!snd_interval_test(r, amdtp_rate_table[i]))
continue;
@@ -66,7 +72,6 @@
static void limit_channels_and_rates(struct snd_pcm_hardware *hw,
const unsigned int *pcm_channels)
{
- unsigned int mode;
unsigned int rate, channels;
int i;
@@ -76,7 +81,12 @@
hw->rate_max = 0;
for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
- mode = get_multiplier_mode_with_index(i);
+ enum snd_ff_stream_mode mode;
+ int err;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ continue;
channels = pcm_channels[mode];
if (pcm_channels[mode] == 0)
@@ -129,6 +139,7 @@
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
+ struct amdtp_domain *d = &ff->domain;
unsigned int rate;
enum snd_ff_clock_src src;
int i, err;
@@ -145,16 +156,21 @@
if (err < 0)
goto release_lock;
+ mutex_lock(&ff->mutex);
+
+ // 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_FF_CLOCK_SRC_INTERNAL) {
for (i = 0; i < CIP_SFC_COUNT; ++i) {
if (amdtp_rate_table[i] == rate)
break;
}
- /*
- * The unit is configured at sampling frequency which packet
- * streaming engine can't support.
- */
+
+ // The unit is configured at sampling frequency which packet
+ // streaming engine can't support.
if (i >= CIP_SFC_COUNT) {
+ mutex_unlock(&ff->mutex);
err = -EIO;
goto release_lock;
}
@@ -162,13 +178,33 @@
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
} else {
- if (amdtp_stream_pcm_running(&ff->rx_stream) ||
- amdtp_stream_pcm_running(&ff->tx_stream)) {
+ if (ff->substreams_counter > 0) {
+ unsigned int frames_per_period = d->events_per_period;
+ unsigned int frames_per_buffer = d->events_per_buffer;
+
rate = amdtp_rate_table[ff->rx_stream.sfc];
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
+
+ err = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+ frames_per_period, frames_per_period);
+ if (err < 0) {
+ mutex_unlock(&ff->mutex);
+ goto release_lock;
+ }
+
+ err = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+ frames_per_buffer, frames_per_buffer);
+ if (err < 0) {
+ mutex_unlock(&ff->mutex);
+ goto release_lock;
+ }
}
}
+
+ mutex_unlock(&ff->mutex);
snd_pcm_set_sync(substream);
@@ -188,76 +224,42 @@
return 0;
}
-static int pcm_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_ff *ff = 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(&ff->mutex);
- ff->substreams_counter++;
+ err = snd_ff_stream_reserve_duplex(ff, rate, frames_per_period,
+ frames_per_buffer);
+ if (err >= 0)
+ ++ff->substreams_counter;
mutex_unlock(&ff->mutex);
}
- return 0;
+ return err;
}
-static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
-{
- struct snd_ff *ff = 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(&ff->mutex);
- ff->substreams_counter++;
- mutex_unlock(&ff->mutex);
- }
-
- return 0;
-}
-
-static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
+static int pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
mutex_lock(&ff->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
- ff->substreams_counter--;
+ --ff->substreams_counter;
snd_ff_stream_stop_duplex(ff);
mutex_unlock(&ff->mutex);
- return snd_pcm_lib_free_vmalloc_buffer(substream);
-}
-
-static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_ff *ff = substream->private_data;
-
- mutex_lock(&ff->mutex);
-
- if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
- ff->substreams_counter--;
-
- snd_ff_stream_stop_duplex(ff);
-
- mutex_unlock(&ff->mutex);
-
- return snd_pcm_lib_free_vmalloc_buffer(substream);
+ return 0;
}
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
@@ -334,28 +336,28 @@
{
struct snd_ff *ff = sbstrm->private_data;
- return amdtp_stream_pcm_pointer(&ff->tx_stream);
+ return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->tx_stream);
}
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_ff *ff = sbstrm->private_data;
- return amdtp_stream_pcm_pointer(&ff->rx_stream);
+ return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->rx_stream);
}
static int pcm_capture_ack(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
- return amdtp_stream_pcm_ack(&ff->tx_stream);
+ return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->tx_stream);
}
static int pcm_playback_ack(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
- return amdtp_stream_pcm_ack(&ff->rx_stream);
+ return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->rx_stream);
}
int snd_ff_create_pcm_devices(struct snd_ff *ff)
@@ -363,26 +365,22 @@
static const struct snd_pcm_ops pcm_capture_ops = {
.open = pcm_open,
.close = pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = pcm_capture_hw_params,
- .hw_free = pcm_capture_hw_free,
+ .hw_params = pcm_hw_params,
+ .hw_free = pcm_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.ack = pcm_capture_ack,
- .page = snd_pcm_lib_get_vmalloc_page,
};
static const struct snd_pcm_ops pcm_playback_ops = {
.open = pcm_open,
.close = pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = pcm_playback_hw_params,
- .hw_free = pcm_playback_hw_free,
+ .hw_params = pcm_hw_params,
+ .hw_free = pcm_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.ack = pcm_playback_ack,
- .page = snd_pcm_lib_get_vmalloc_page,
};
struct snd_pcm *pcm;
int err;
@@ -396,6 +394,7 @@
"%s PCM", ff->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
return 0;
}
--
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