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<div id="msg">
<div id="header">FreeSWITCH Subversion</div>
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://fisheye.freeswitch.org/changelog/FreeSWITCH?cs=14335">14335</a></dd>
<dt>Author</dt> <dd>gmaruzz</dd>
<dt>Date</dt> <dd>2009-07-24 07:13:40 -0500 (Fri, 24 Jul 2009)</dd>
</dl>
<h3>Log Message</h3>
<pre>skypiax: added directory 'alsa', contains customized snd-dummy ALSA driver, low load. Please use alsa-<a href="http://jira.freeswitch.org/browse/driver-1">driver-1</a>.0.20 sources from alsa-project.org to compile, older sources got a bug that causes kernel oops</pre>
<h3>Added Paths</h3>
<ul>
<li>freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/</li>
<li><a href="#freeswitchtrunksrcmodendpointsmod_skypiaxalsaalsadriver1020dummyc">freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/alsa-driver-1.0.20-dummy.c</a></li>
<li><a href="#freeswitchtrunksrcmodendpointsmod_skypiaxalsadummyc">freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/dummy.c</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="freeswitchtrunksrcmodendpointsmod_skypiaxalsaalsadriver1020dummyc"></a>
<div class="addfile"><h4>Added: freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/alsa-driver-1.0.20-dummy.c (0 => 14335)</h4>
<pre class="diff"><span>
<span class="info">--- freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/alsa-driver-1.0.20-dummy.c (rev 0)
+++ freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/alsa-driver-1.0.20-dummy.c 2009-07-24 12:13:40 UTC (rev 14335)
</span><span class="lines">@@ -0,0 +1 @@
</span><ins>+link ./dummy.c
</ins><span class="cx">\ No newline at end of file
</span><span class="cx">Property changes on: freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/alsa-driver-1.0.20-dummy.c
</span><span class="cx">___________________________________________________________________
</span><span class="cx">Name: svn:special
</span><span class="cx"> + *
</span></span></pre></div>
<a id="freeswitchtrunksrcmodendpointsmod_skypiaxalsadummyc"></a>
<div class="addfile"><h4>Added: freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/dummy.c (0 => 14335)</h4>
<pre class="diff"><span>
<span class="info">--- freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/dummy.c (rev 0)
+++ freeswitch/trunk/src/mod/endpoints/mod_skypiax/alsa/dummy.c 2009-07-24 12:13:40 UTC (rev 14335)
</span><span class="lines">@@ -0,0 +1,958 @@
</span><ins>+/*
+ * Dummy soundcard
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h> //giova
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/tlv.h>
+#include <sound/pcm.h>
+#include <sound/rawmidi.h>
+#include <sound/initval.h>
+
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
+MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
+
+#define MAX_PCM_DEVICES 4
+#define MAX_PCM_SUBSTREAMS 128
+#define MAX_MIDI_DEVICES 2
+
+#if 0 /* emu10k1 emulation */
+#define MAX_BUFFER_SIZE (128 * 1024)
+static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime)
+{
+ int err;
+ err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0)
+ return err;
+ err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX);
+ if (err < 0)
+ return err;
+ return 0;
+}
+#define add_playback_constraints emu10k1_playback_constraints
+#endif
+
+#if 0 /* RME9652 emulation */
+#define MAX_BUFFER_SIZE (26 * 64 * 1024)
+#define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE
+#define USE_CHANNELS_MIN 26
+#define USE_CHANNELS_MAX 26
+#define USE_PERIODS_MIN 2
+#define USE_PERIODS_MAX 2
+#endif
+
+#if 0 /* ICE1712 emulation */
+#define MAX_BUFFER_SIZE (256 * 1024)
+#define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE
+#define USE_CHANNELS_MIN 10
+#define USE_CHANNELS_MAX 10
+#define USE_PERIODS_MIN 1
+#define USE_PERIODS_MAX 1024
+#endif
+
+#if 0 /* UDA1341 emulation */
+#define MAX_BUFFER_SIZE (16380)
+#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
+#define USE_CHANNELS_MIN 2
+#define USE_CHANNELS_MAX 2
+#define USE_PERIODS_MIN 2
+#define USE_PERIODS_MAX 255
+#endif
+
+#if 0 /* simple AC97 bridge (intel8x0) with 48kHz AC97 only codec */
+#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
+#define USE_CHANNELS_MIN 2
+#define USE_CHANNELS_MAX 2
+#define USE_RATE SNDRV_PCM_RATE_48000
+#define USE_RATE_MIN 48000
+#define USE_RATE_MAX 48000
+#endif
+
+#if 0 /* CA0106 */
+#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
+#define USE_CHANNELS_MIN 2
+#define USE_CHANNELS_MAX 2
+#define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000)
+#define USE_RATE_MIN 48000
+#define USE_RATE_MAX 192000
+#define MAX_BUFFER_SIZE ((65536-64)*8)
+#define MAX_PERIOD_SIZE (65536-64)
+#define USE_PERIODS_MIN 2
+#define USE_PERIODS_MAX 8
+#endif
+
+
+/* defaults */
+#ifndef MAX_BUFFER_SIZE
+#define MAX_BUFFER_SIZE (64*1024)
+#endif
+#ifndef MAX_PERIOD_SIZE
+#define MAX_PERIOD_SIZE MAX_BUFFER_SIZE
+#endif
+#ifndef USE_FORMATS
+#define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
+#endif
+#ifndef USE_RATE
+#define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000
+#define USE_RATE_MIN 5500
+#define USE_RATE_MAX 48000
+#endif
+#ifndef USE_CHANNELS_MIN
+#define USE_CHANNELS_MIN 1
+#endif
+#ifndef USE_CHANNELS_MAX
+#define USE_CHANNELS_MAX 2
+#endif
+#ifndef USE_PERIODS_MIN
+#define USE_PERIODS_MIN 1
+#endif
+#ifndef USE_PERIODS_MAX
+#define USE_PERIODS_MAX 1024
+#endif
+#ifndef add_playback_constraints
+#define add_playback_constraints(x) 0
+#endif
+#ifndef add_capture_constraints
+#define add_capture_constraints(x) 0
+#endif
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
+static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
+static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 128};
+//static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for dummy soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
+module_param_array(pcm_devs, int, NULL, 0444);
+MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
+module_param_array(pcm_substreams, int, NULL, 0444);
+MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-64) for dummy driver.");
+//module_param_array(midi_devs, int, NULL, 0444);
+//MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
+
+static struct platform_device *devices[SNDRV_CARDS];
+static struct timer_list giovatimer; //giova
+static int giovastarted=0;
+static int giovaindex=0;
+static spinlock_t giovalock;
+struct giovadpcm {
+ struct snd_pcm_substream *substream;
+ struct snd_dummy_pcm *dpcm;
+ int started;
+};
+static struct giovadpcm giovadpcms[MAX_PCM_SUBSTREAMS];
+
+#define MIXER_ADDR_MASTER 0
+#define MIXER_ADDR_LINE 1
+#define MIXER_ADDR_MIC 2
+#define MIXER_ADDR_SYNTH 3
+#define MIXER_ADDR_CD 4
+#define MIXER_ADDR_LAST 4
+
+static void snd_card_dummy_pcm_timer_function(unsigned long data);
+struct snd_dummy {
+ struct snd_card *card;
+ struct snd_pcm *pcm;
+ spinlock_t mixer_lock;
+ int mixer_volume[MIXER_ADDR_LAST+1][2];
+ int capture_source[MIXER_ADDR_LAST+1][2];
+};
+
+struct snd_dummy_pcm {
+ struct snd_dummy *dummy;
+ spinlock_t lock;
+ struct timer_list timer;
+ unsigned int pcm_buffer_size;
+ unsigned int pcm_period_size;
+ unsigned int pcm_bps; /* bytes per second */
+ unsigned int pcm_hz; /* HZ */
+ unsigned int pcm_irq_pos; /* IRQ position */
+ unsigned int pcm_buf_pos; /* position in buffer */
+ struct snd_pcm_substream *substream;
+};
+
+
+static inline void snd_card_dummy_pcm_timer_start(struct snd_dummy_pcm *dpcm)
+{
+int i;
+int found=0;
+
+
+//printk("giova: 1 timer_start %d %p\n", __LINE__, dpcm);
+for(i=0; i<giovaindex+1; i++){
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, i, giovaindex, dpcm);
+ }
+
+if(giovadpcms[i].dpcm == dpcm){
+ giovadpcms[i].started=1;
+ found=1;
+}
+}
+if(!found){
+ printk("skypiax: start, NOT found?\n");
+}
+
+
+
+//printk("giova: 2 timer_start %d %p\n", __LINE__, dpcm);
+}
+
+static inline void snd_card_dummy_pcm_timer_stop(struct snd_dummy_pcm *dpcm)
+{
+ //del_timer(&dpcm->timer);
+int i;
+int found=0;
+
+//printk("giova: 1 timer_stop %d %p\n", __LINE__, dpcm);
+for(i=0; i<giovaindex +1; i++){
+
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, i, giovaindex, dpcm);
+ }
+if(giovadpcms[i].dpcm == dpcm){
+ giovadpcms[i].started=0;
+ found=1;
+}
+}
+if(!found){
+ //printk("skypiax: stop, NOT found?\n");
+ } else {
+ //printk("skypiax: stop, YES found!\n");
+ }
+
+
+
+//printk("giova: 2 timer_stop %d %p\n", __LINE__, dpcm);
+}
+
+static int snd_card_dummy_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_dummy_pcm *dpcm = runtime->private_data;
+ int err = 0;
+
+ //spin_lock(&dpcm->lock, flags);
+ spin_lock_bh(&giovalock);
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+//printk("giova: trigger timer_start %d %p\n", __LINE__, dpcm);
+ snd_card_dummy_pcm_timer_start(dpcm);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+//printk("giova: trigger timer_stop %d %p\n", __LINE__, dpcm);
+ snd_card_dummy_pcm_timer_stop(dpcm);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ //spin_unlock(&dpcm->lock, flags);
+ spin_unlock_bh(&giovalock);
+ return 0;
+}
+
+static int snd_card_dummy_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_dummy_pcm *dpcm = runtime->private_data;
+ int bps;
+
+ bps = snd_pcm_format_width(runtime->format) * runtime->rate *
+ runtime->channels / 8;
+
+ if (bps <= 0)
+ return -EINVAL;
+
+ dpcm->pcm_bps = bps;
+ dpcm->pcm_hz = HZ;
+ dpcm->pcm_buffer_size = snd_pcm_lib_buffer_bytes(substream);
+ dpcm->pcm_period_size = snd_pcm_lib_period_bytes(substream);
+ dpcm->pcm_irq_pos = 0;
+ dpcm->pcm_buf_pos = 0;
+ snd_pcm_format_set_silence(runtime->format, runtime->dma_area,
+ bytes_to_samples(runtime, runtime->dma_bytes));
+
+//printk("giova: prepare %d %p\n", __LINE__, dpcm);
+ return 0;
+}
+
+static void snd_card_dummy_pcm_timer_function(unsigned long data)
+{
+ //struct snd_dummy_pcm *dpcm = (struct snd_dummy_pcm *)data;
+ struct snd_dummy_pcm *dpcm=NULL;
+ //unsigned long flags;
+int i;
+
+
+ giovatimer.expires = (HZ/100) + jiffies;
+ add_timer(&giovatimer);
+
+for(i=0; i< giovaindex +1; i++) {
+
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, i, giovaindex, dpcm);
+ }
+//printk("giova: timer_func %d i=%d\n", __LINE__, i);
+
+if(giovadpcms[i].started != 1)
+ continue;
+dpcm = giovadpcms[i].dpcm;
+if(dpcm==NULL){
+ printk("giova: timer_func %d %d NULL: continue\n", __LINE__, i);
+ continue;
+ }
+ if(in_irq())
+ printk("giova: timer_func %d %d we are in HARDWARE IRQ\n", __LINE__, i);
+ //if(in_softirq())
+ //printk("giova: timer_func %d %d we are in SOFT IRQ\n", __LINE__, i);
+//printk("giova: timer_func %d %d\n", __LINE__, i);
+ //spin_lock_irqsave(&dpcm->lock, flags);
+ spin_lock_bh(&dpcm->lock);
+ dpcm->pcm_irq_pos += dpcm->pcm_bps * (HZ/100);
+ dpcm->pcm_buf_pos += dpcm->pcm_bps * (HZ/100);
+ dpcm->pcm_buf_pos %= dpcm->pcm_buffer_size * dpcm->pcm_hz;
+ if (dpcm->pcm_irq_pos >= dpcm->pcm_period_size * dpcm->pcm_hz) {
+ dpcm->pcm_irq_pos %= dpcm->pcm_period_size * dpcm->pcm_hz;
+ //spin_unlock_irqrestore(&dpcm->lock, flags);
+ spin_unlock_bh(&dpcm->lock);
+ snd_pcm_period_elapsed(dpcm->substream);
+ } else {
+ //spin_unlock_irqrestore(&dpcm->lock, flags);
+ spin_unlock_bh(&dpcm->lock);
+ }
+}
+}
+
+static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_dummy_pcm *dpcm = runtime->private_data;
+
+//printk("giova: pointer %d %p\n", __LINE__, dpcm);
+ //return bytes_to_frames(runtime, dpcm->pcm_buf_pos / dpcm->pcm_hz);
+ return (dpcm->pcm_buf_pos / dpcm->pcm_hz)/2;
+}
+
+static struct snd_pcm_hardware snd_card_dummy_playback =
+{
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = USE_FORMATS,
+ .rates = USE_RATE,
+ .rate_min = USE_RATE_MIN,
+ .rate_max = USE_RATE_MAX,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_min = 64,
+ .period_bytes_max = MAX_PERIOD_SIZE,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+};
+
+static struct snd_pcm_hardware snd_card_dummy_capture =
+{
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = USE_FORMATS,
+ .rates = USE_RATE,
+ .rate_min = USE_RATE_MIN,
+ .rate_max = USE_RATE_MAX,
+ .channels_min = USE_CHANNELS_MIN,
+ .channels_max = USE_CHANNELS_MAX,
+ .buffer_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_min = 64,
+ .period_bytes_max = MAX_PERIOD_SIZE,
+ .periods_min = USE_PERIODS_MIN,
+ .periods_max = USE_PERIODS_MAX,
+ .fifo_size = 0,
+};
+
+static void snd_card_dummy_runtime_free(struct snd_pcm_runtime *runtime)
+{
+int i;
+//int found=0;
+
+//printk("snd_card_dummy_runtime_free giova 1 giovaindex=%d dpcm=%p runtime=%p\n", giovaindex, runtime->private_data, runtime);
+ spin_lock_bh(&giovalock);
+
+for(i=0; i < giovaindex; i++) {
+
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d \n", __FILE__, __LINE__, i, giovaindex);
+ }
+ //if((giovadpcms[i].substream == substream) && (giovadpcms[i].dpcm == dpcm)){
+ if((giovadpcms[i].dpcm == runtime->private_data)){
+ //printk("giova, %s:%d, i=%d, giovaindex=%d %p==%p YES I AM!!!!\n", __FILE__, __LINE__, i, giovaindex, giovadpcms[i].dpcm , runtime->private_data);
+ //giovadpcms[i].dpcm = NULL;
+ //giovadpcms[i].substream = NULL;
+ giovadpcms[i].started = 0;
+ //break;
+ } else {
+ //printk("giova, %s:%d, i=%d, giovaindex=%d %p!=%p NOT ME\n", __FILE__, __LINE__, i, giovaindex, giovadpcms[i].dpcm , runtime->private_data);
+ }
+}
+
+ spin_unlock_bh(&giovalock);
+ kfree(runtime->private_data);
+}
+
+static int snd_card_dummy_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+static int snd_card_dummy_hw_free(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static struct snd_dummy_pcm *new_pcm_stream(struct snd_pcm_substream *substream)
+{
+ struct snd_dummy_pcm *dpcm;
+ int i;
+ int found=0;
+
+ //printk("giova, %s:%d, i=%d, giovaindex=%d %p==%p YES I AM!!!!\n", __FILE__, __LINE__, i, giovaindex, giovadpcms[i].dpcm , runtime->private_data);
+ //printk("giova, %s:%d, giovaindex=%d\n", __FILE__, __LINE__, giovaindex);
+ dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
+ //printk("giova, %s:%d, giovaindex=%d\n", __FILE__, __LINE__, giovaindex);
+ if (! dpcm){
+ //spin_unlock_bh(&giovalock);
+ printk("giova, %s:%d, giovaindex=%d NO MEMORY!!!!\n", __FILE__, __LINE__, giovaindex);
+ return dpcm;
+ }
+ //printk("giova, %s:%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, giovaindex, dpcm);
+ init_timer(&dpcm->timer);
+ //dpcm->timer.data = (unsigned long) dpcm;
+ //dpcm->timer.function = snd_card_dummy_pcm_timer_function;
+ spin_lock_init(&dpcm->lock);
+ dpcm->substream = substream;
+
+ spin_lock_bh(&giovalock);
+ //printk("giova 1 giovaindex=%d dpcm=%p substream=%p sizeof=%lu\n", giovaindex, dpcm, substream, sizeof(*dpcm));
+ for(i=0; i < giovaindex; i++) {
+
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, i, giovaindex, dpcm);
+ }
+ //if((giovadpcms[i].substream == substream) && (giovadpcms[i].dpcm == dpcm))
+ if((giovadpcms[i].substream == substream)){
+ found=1;
+ break;
+ }
+
+ }
+
+ if(!found){
+
+ giovadpcms[giovaindex].substream=substream;
+ giovaindex++;
+ //printk("giova 2 giovaindex=%d dpcm=%p substream=%p\n", giovaindex, dpcm, substream);
+ }
+
+
+
+ found =0;
+ for(i=0; i < giovaindex; i++) {
+
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, i, giovaindex, dpcm);
+ }
+ if(giovadpcms[i].substream == substream){
+ giovadpcms[i].dpcm=dpcm;
+ giovadpcms[i].started=0;
+ found = 1;
+ //printk("giova 3 giovaindex=%d dpcm=%p substream=%p\n", giovaindex, dpcm, substream);
+ break;
+ }
+
+ }
+
+ spin_unlock_bh(&giovalock);
+ if(!found) {
+ printk("skypiax giovaindex=%d NOT found????\n", giovaindex);
+ }
+
+ //printk("giova, %s:%d, giovaindex=%d\n", __FILE__, __LINE__, giovaindex);
+ return dpcm;
+}
+
+static int snd_card_dummy_playback_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_dummy_pcm *dpcm;
+ int err;
+
+ if ((dpcm = new_pcm_stream(substream)) == NULL)
+ return -ENOMEM;
+ //printk("giova, %s:%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, giovaindex, dpcm);
+ runtime->private_data = dpcm;
+ /* makes the infrastructure responsible for freeing dpcm */
+ runtime->private_free = snd_card_dummy_runtime_free;
+ runtime->hw = snd_card_dummy_playback;
+ if (substream->pcm->device & 1) {
+ runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;
+ runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
+ }
+ if (substream->pcm->device & 2)
+ runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
+ err = add_playback_constraints(runtime);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int snd_card_dummy_capture_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_dummy_pcm *dpcm;
+ int err;
+
+ if ((dpcm = new_pcm_stream(substream)) == NULL)
+ return -ENOMEM;
+ //printk("giova, %s:%d, giovaindex=%d dpcm=%p\n", __FILE__, __LINE__, giovaindex, dpcm);
+ runtime->private_data = dpcm;
+ /* makes the infrastructure responsible for freeing dpcm */
+ runtime->private_free = snd_card_dummy_runtime_free;
+ runtime->hw = snd_card_dummy_capture;
+ if (substream->pcm->device == 1) {
+ runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;
+ runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
+ }
+ if (substream->pcm->device & 2)
+ runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
+ err = add_capture_constraints(runtime);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int snd_card_dummy_playback_close(struct snd_pcm_substream *substream)
+{
+//printk("play giova 1 giovaindex=%d dpcm=%p substream=%p\n", giovaindex, substream->private_data, substream);
+ snd_card_dummy_pcm_timer_stop(substream->private_data);
+ return 0;
+}
+
+static int snd_card_dummy_capture_close(struct snd_pcm_substream *substream)
+{
+//printk("capt giova 2 giovaindex=%d dpcm=%p substream=%p\n", giovaindex, substream->private_data, substream);
+ snd_card_dummy_pcm_timer_stop(substream->private_data);
+ return 0;
+}
+
+static struct snd_pcm_ops snd_card_dummy_playback_ops = {
+ .open = snd_card_dummy_playback_open,
+ .close = snd_card_dummy_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_card_dummy_hw_params,
+ .hw_free = snd_card_dummy_hw_free,
+ .prepare = snd_card_dummy_pcm_prepare,
+ .trigger = snd_card_dummy_pcm_trigger,
+ .pointer = snd_card_dummy_pcm_pointer,
+};
+
+static struct snd_pcm_ops snd_card_dummy_capture_ops = {
+ .open = snd_card_dummy_capture_open,
+ .close = snd_card_dummy_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_card_dummy_hw_params,
+ .hw_free = snd_card_dummy_hw_free,
+ .prepare = snd_card_dummy_pcm_prepare,
+ .trigger = snd_card_dummy_pcm_trigger,
+ .pointer = snd_card_dummy_pcm_pointer,
+};
+
+static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
+ int substreams)
+{
+ struct snd_pcm *pcm;
+ int err;
+
+ err = snd_pcm_new(dummy->card, "Dummy PCM", device,
+ substreams, substreams, &pcm);
+ if (err < 0)
+ return err;
+ dummy->pcm = pcm;
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_dummy_capture_ops);
+ pcm->private_data = dummy;
+ pcm->info_flags = 0;
+ strcpy(pcm->name, "Dummy PCM");
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+ snd_dma_continuous_data(GFP_KERNEL),
+ 128*1024, 1024*1024);
+
+ return 0;
+}
+
+#define DUMMY_VOLUME(xname, xindex, addr) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
+ .name = xname, .index = xindex, \
+ .info = snd_dummy_volume_info, \
+ .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \
+ .private_value = addr, \
+ .tlv = { .p = db_scale_dummy } }
+
+static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+ uinfo->value.integer.min = -50;
+ uinfo->value.integer.max = 100;
+ return 0;
+}
+
+static int snd_dummy_volume_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
+ int addr = kcontrol->private_value;
+ //unsigned long flags;
+
+ if(in_irq())
+ printk("giova: line %d we are in HARDWARE IRQ\n", __LINE__);
+//printk("giova: volume get %d %d\n", __LINE__, addr);
+ //spin_lock_irq(&dummy->mixer_lock);
+ //spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_bh(&dummy->mixer_lock);
+ ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];
+ ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];
+ //spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_bh(&dummy->mixer_lock);
+ return 0;
+}
+
+static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
+ int change, addr = kcontrol->private_value;
+ int left, right;
+ //unsigned long flags;
+
+ if(in_irq())
+ printk("giova: line %d we are in HARDWARE IRQ\n", __LINE__);
+ left = ucontrol->value.integer.value[0];
+ if (left < -50)
+ left = -50;
+ if (left > 100)
+ left = 100;
+ right = ucontrol->value.integer.value[1];
+ if (right < -50)
+ right = -50;
+ if (right > 100)
+ right = 100;
+//printk("giova: volume put %d %d\n", __LINE__, addr);
+ //spin_lock_irq(&dummy->mixer_lock);
+ //spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_bh(&dummy->mixer_lock);
+ change = dummy->mixer_volume[addr][0] != left ||
+ dummy->mixer_volume[addr][1] != right;
+ dummy->mixer_volume[addr][0] = left;
+ dummy->mixer_volume[addr][1] = right;
+ //spin_unlock_irq(&dummy->mixer_lock);
+ //spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_bh(&dummy->mixer_lock);
+ return change;
+}
+
+static const DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0);
+
+#define DUMMY_CAPSRC(xname, xindex, addr) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+ .info = snd_dummy_capsrc_info, \
+ .get = snd_dummy_capsrc_get, .put = snd_dummy_capsrc_put, \
+ .private_value = addr }
+
+#define snd_dummy_capsrc_info snd_ctl_boolean_stereo_info
+
+static int snd_dummy_capsrc_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
+ int addr = kcontrol->private_value;
+ //unsigned long flags;
+
+ if(in_irq())
+ printk("giova: line %d we are in HARDWARE IRQ\n", __LINE__);
+ //spin_lock_irq(&dummy->mixer_lock);
+ //spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_bh(&dummy->mixer_lock);
+ ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];
+ ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];
+ //spin_unlock_irq(&dummy->mixer_lock);
+ //spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_bh(&dummy->mixer_lock);
+//printk("giova: capsrc_get %d %d\n", __LINE__, addr);
+ return 0;
+}
+
+static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);
+ int change, addr = kcontrol->private_value;
+ int left, right;
+ //unsigned long flags;
+
+ if(in_irq())
+ printk("giova: line %d we are in HARDWARE IRQ\n", __LINE__);
+ left = ucontrol->value.integer.value[0] & 1;
+ right = ucontrol->value.integer.value[1] & 1;
+ //spin_lock_irq(&dummy->mixer_lock);
+ //spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_bh(&dummy->mixer_lock);
+ change = dummy->capture_source[addr][0] != left &&
+ dummy->capture_source[addr][1] != right;
+ dummy->capture_source[addr][0] = left;
+ dummy->capture_source[addr][1] = right;
+ //spin_unlock_irq(&dummy->mixer_lock);
+ //spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_bh(&dummy->mixer_lock);
+//printk("giova: capsrc_put %d %d\n", __LINE__, addr);
+ return change;
+}
+
+static struct snd_kcontrol_new snd_dummy_controls[] = {
+DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER),
+DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER),
+DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH),
+DUMMY_CAPSRC("Synth Capture Switch", 0, MIXER_ADDR_SYNTH),
+DUMMY_VOLUME("Line Volume", 0, MIXER_ADDR_LINE),
+DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE),
+DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC),
+DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC),
+DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD),
+DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD)
+};
+
+static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
+{
+ struct snd_card *card = dummy->card;
+ unsigned int idx;
+ int err;
+
+ //giova if (snd_BUG_ON(!dummy))
+ //giova return -EINVAL;
+ spin_lock_init(&dummy->mixer_lock);
+ strcpy(card->mixername, "Dummy Mixer");
+//printk("giova: new_mixer %d\n", __LINE__);
+ return 0; //giova no mixer
+
+ for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) {
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy));
+ if (err < 0)
+ return err;
+ }
+ return 0;
+}
+
+static int __devinit snd_dummy_probe(struct platform_device *devptr)
+{
+ struct snd_card *card;
+ struct snd_dummy *dummy;
+ int idx, err;
+ int dev = devptr->id;
+
+ card = snd_card_new(index[dev], id[dev], THIS_MODULE,
+ sizeof(struct snd_dummy));
+ if (card == NULL)
+ return -ENOMEM;
+
+ //giova err = snd_card_create(index[dev], id[dev], THIS_MODULE,
+ //giova sizeof(struct snd_dummy), &card);
+ //giova if (err < 0)
+ //giova return err;
+ dummy = card->private_data;
+ dummy->card = card;
+ for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) {
+ if (pcm_substreams[dev] < 1)
+ pcm_substreams[dev] = 1;
+ if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS)
+ pcm_substreams[dev] = MAX_PCM_SUBSTREAMS;
+ err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);
+ if (err < 0)
+ goto __nodev;
+ }
+ err = snd_card_dummy_new_mixer(dummy);
+ if (err < 0)
+ goto __nodev;
+ strcpy(card->driver, "Dummy");
+ strcpy(card->shortname, "Dummy");
+ sprintf(card->longname, "Dummy %i", dev + 1);
+
+ snd_card_set_dev(card, &devptr->dev);
+
+ err = snd_card_register(card);
+ if (err == 0) {
+ platform_set_drvdata(devptr, card);
+ return 0;
+ }
+ __nodev:
+ snd_card_free(card);
+ return err;
+}
+
+static int __devexit snd_dummy_remove(struct platform_device *devptr)
+{
+
+ del_timer(&giovatimer);
+ snd_card_free(platform_get_drvdata(devptr));
+ platform_set_drvdata(devptr, NULL);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct snd_card *card = platform_get_drvdata(pdev);
+ struct snd_dummy *dummy = card->private_data;
+
+ snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+ snd_pcm_suspend_all(dummy->pcm);
+ return 0;
+}
+
+static int snd_dummy_resume(struct platform_device *pdev)
+{
+ struct snd_card *card = platform_get_drvdata(pdev);
+
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+ return 0;
+}
+#endif
+
+#define SND_DUMMY_DRIVER "snd_dummy"
+
+static struct platform_driver snd_dummy_driver = {
+ .probe = snd_dummy_probe,
+ .remove = __devexit_p(snd_dummy_remove),
+#ifdef CONFIG_PM
+ .suspend = snd_dummy_suspend,
+ .resume = snd_dummy_resume,
+#endif
+ .driver = {
+ .name = SND_DUMMY_DRIVER
+ },
+};
+
+static void snd_dummy_unregister_all(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devices); ++i)
+ platform_device_unregister(devices[i]);
+ platform_driver_unregister(&snd_dummy_driver);
+}
+
+static int __init alsa_card_dummy_init(void)
+{
+ int i, cards, err;
+
+ err = platform_driver_register(&snd_dummy_driver);
+ if (err < 0)
+ return err;
+
+if(!giovastarted){
+giovastarted=1;
+ spin_lock_init(&giovalock);
+
+ spin_lock_bh(&giovalock);
+for(i=0; i<MAX_PCM_SUBSTREAMS;i++){
+
+ if(i > MAX_PCM_SUBSTREAMS || giovaindex > MAX_PCM_SUBSTREAMS){
+ printk("giova, %s:%d, i=%d, giovaindex=%d \n", __FILE__, __LINE__, i, giovaindex);
+ }
+giovadpcms[i].substream=NULL;
+giovadpcms[i].dpcm=NULL;
+giovadpcms[i].started=0;
+}
+ init_timer(&giovatimer);
+ //giovatimer.data = (unsigned long) dpcm;
+ giovatimer.data = (unsigned long) &giovadpcms;
+ giovatimer.function = snd_card_dummy_pcm_timer_function;
+ giovatimer.expires = (HZ/100) + jiffies;
+ add_timer(&giovatimer);
+printk("giova skypiax: %d\n", __LINE__);
+ spin_unlock_bh(&giovalock);
+}
+
+
+ cards = 0;
+ for (i = 0; i < SNDRV_CARDS; i++) {
+ struct platform_device *device;
+ if (! enable[i])
+ continue;
+ device = platform_device_register_simple(SND_DUMMY_DRIVER,
+ i, NULL, 0);
+ if (IS_ERR(device))
+ continue;
+ if (!platform_get_drvdata(device)) {
+ platform_device_unregister(device);
+ continue;
+ }
+ devices[i] = device;
+ cards++;
+ }
+ if (!cards) {
+#ifdef MODULE
+ printk(KERN_ERR "Dummy soundcard not found or device busy\n");
+#endif
+ snd_dummy_unregister_all();
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static void __exit alsa_card_dummy_exit(void)
+{
+ del_timer(&giovatimer);
+ snd_dummy_unregister_all();
+}
+
+module_init(alsa_card_dummy_init)
+module_exit(alsa_card_dummy_exit)
</ins></span></pre>
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