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[ALSA] ali5451 - Fix and clean up codec accessor

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Modules: ALI5451 driver

Fix the codec accessors to avoid soft lockup.
Spin locks are revised, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-11-11 21:05:27 +01:00 committed by Jaroslav Kysela
parent fd6715e564
commit 755e137138
1 changed files with 36 additions and 53 deletions
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89
sound/pci/ali5451/ali5451.c
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@ -387,26 +387,24 @@ static inline void snd_ali_5451_poke( ali_t *codec,
}
static int snd_ali_codec_ready( ali_t *codec,
unsigned int port,
int sched )
unsigned int port )
{
unsigned long end_time;
unsigned int res;
end_time = jiffies + 10 * msecs_to_jiffies(250);
end_time = jiffies + msecs_to_jiffies(250);
do {
res = snd_ali_5451_peek(codec,port);
if (! (res & 0x8000))
return 0;
if (sched)
schedule_timeout_uninterruptible(1);
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
snd_ali_5451_poke(codec, port, res & ~0x8000);
snd_printdd("ali_codec_ready: codec is not ready.\n ");
return -EIO;
}
static int snd_ali_stimer_ready(ali_t *codec, int sched)
static int snd_ali_stimer_ready(ali_t *codec)
{
unsigned long end_time;
unsigned long dwChk1,dwChk2;
@ -414,13 +412,12 @@ static int snd_ali_stimer_ready(ali_t *codec, int sched)
dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
end_time = jiffies + 10 * msecs_to_jiffies(250);
end_time = jiffies + msecs_to_jiffies(250);
do {
dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
if (dwChk2 != dwChk1)
return 0;
if (sched)
schedule_timeout_uninterruptible(1);
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
snd_printk(KERN_ERR "ali_stimer_read: stimer is not ready.\n");
return -EIO;
@ -440,9 +437,9 @@ static void snd_ali_codec_poke(ali_t *codec,int secondary,
port = codec->chregs.regs.ac97write;
if (snd_ali_codec_ready(codec, port, 0) < 0)
if (snd_ali_codec_ready(codec, port) < 0)
return;
if (snd_ali_stimer_ready(codec, 0) < 0)
if (snd_ali_stimer_ready(codec) < 0)
return;
dwVal = (unsigned int) (reg & 0xff);
@ -469,9 +466,9 @@ static unsigned short snd_ali_codec_peek( ali_t *codec,
port = codec->chregs.regs.ac97read;
if (snd_ali_codec_ready(codec, port, 0) < 0)
if (snd_ali_codec_ready(codec, port) < 0)
return ~0;
if (snd_ali_stimer_ready(codec, 0) < 0)
if (snd_ali_stimer_ready(codec) < 0)
return ~0;
dwVal = (unsigned int) (reg & 0xff);
@ -480,9 +477,9 @@ static unsigned short snd_ali_codec_peek( ali_t *codec,
snd_ali_5451_poke(codec, port, dwVal);
if (snd_ali_stimer_ready(codec, 0) < 0)
if (snd_ali_stimer_ready(codec) < 0)
return ~0;
if (snd_ali_codec_ready(codec, port, 0) < 0)
if (snd_ali_codec_ready(codec, port) < 0)
return ~0;
return (snd_ali_5451_peek(codec, port) & 0xffff0000)>>16;
@ -770,7 +767,7 @@ static void snd_ali_delay(ali_t *codec,int interval)
currenttimer = inl(ALI_REG(codec, ALI_STIMER));
while (currenttimer < begintimer + interval) {
if(snd_ali_stimer_ready(codec, 1) < 0)
if(snd_ali_stimer_ready(codec) < 0)
break;
currenttimer = inl(ALI_REG(codec, ALI_STIMER));
}
@ -1065,35 +1062,34 @@ static irqreturn_t snd_ali_card_interrupt(int irq,
static snd_ali_voice_t *snd_ali_alloc_voice(ali_t * codec, int type, int rec, int channel)
{
snd_ali_voice_t *pvoice = NULL;
unsigned long flags;
int idx;
snd_ali_printk("alloc_voice: type=%d rec=%d\n",type,rec);
spin_lock_irqsave(&codec->voice_alloc, flags);
spin_lock_irq(&codec->voice_alloc);
if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
snd_ali_find_free_channel(codec,rec);
if(idx < 0) {
snd_printk(KERN_ERR "ali_alloc_voice: err.\n");
spin_unlock_irqrestore(&codec->voice_alloc, flags);
spin_unlock_irq(&codec->voice_alloc);
return NULL;
}
pvoice = &(codec->synth.voices[idx]);
pvoice->codec = codec;
pvoice->use = 1;
pvoice->pcm = 1;
pvoice->mode = rec;
spin_unlock_irqrestore(&codec->voice_alloc, flags);
spin_unlock_irq(&codec->voice_alloc);
return pvoice;
}
spin_unlock_irqrestore(&codec->voice_alloc, flags);
spin_unlock_irq(&codec->voice_alloc);
return NULL;
}
static void snd_ali_free_voice(ali_t * codec, snd_ali_voice_t *pvoice)
{
unsigned long flags;
void (*private_free)(void *);
void *private_data;
@ -1101,7 +1097,7 @@ static void snd_ali_free_voice(ali_t * codec, snd_ali_voice_t *pvoice)
if (pvoice == NULL || !pvoice->use)
return;
snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
spin_lock_irqsave(&codec->voice_alloc, flags);
spin_lock_irq(&codec->voice_alloc);
private_free = pvoice->private_free;
private_data = pvoice->private_data;
pvoice->private_free = NULL;
@ -1111,7 +1107,7 @@ static void snd_ali_free_voice(ali_t * codec, snd_ali_voice_t *pvoice)
}
pvoice->use = pvoice->pcm = pvoice->synth = 0;
pvoice->substream = NULL;
spin_unlock_irqrestore(&codec->voice_alloc, flags);
spin_unlock_irq(&codec->voice_alloc);
if (private_free)
private_free(private_data);
}
@ -1357,7 +1353,6 @@ static int snd_ali_playback_prepare(snd_pcm_substream_t * substream)
snd_pcm_runtime_t *runtime = substream->runtime;
snd_ali_voice_t *pvoice = (snd_ali_voice_t *) runtime->private_data;
snd_ali_voice_t *evoice = pvoice->extra;
unsigned long flags;
unsigned int LBA;
unsigned int Delta;
@ -1370,7 +1365,7 @@ static int snd_ali_playback_prepare(snd_pcm_substream_t * substream)
snd_ali_printk("playback_prepare ...\n");
spin_lock_irqsave(&codec->reg_lock, flags);
spin_lock_irq(&codec->reg_lock);
/* set Delta (rate) value */
Delta = snd_ali_convert_rate(runtime->rate, 0);
@ -1435,7 +1430,7 @@ static int snd_ali_playback_prepare(snd_pcm_substream_t * substream)
CTRL,
EC);
}
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock_irq(&codec->reg_lock);
return 0;
}
@ -1445,7 +1440,6 @@ static int snd_ali_prepare(snd_pcm_substream_t * substream)
ali_t *codec = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
snd_ali_voice_t *pvoice = (snd_ali_voice_t *) runtime->private_data;
unsigned long flags;
unsigned int LBA;
unsigned int Delta;
unsigned int ESO;
@ -1456,7 +1450,7 @@ static int snd_ali_prepare(snd_pcm_substream_t * substream)
unsigned int EC;
u8 bValue;
spin_lock_irqsave(&codec->reg_lock, flags);
spin_lock_irq(&codec->reg_lock);
snd_ali_printk("ali_prepare...\n");
@ -1471,15 +1465,16 @@ static int snd_ali_prepare(snd_pcm_substream_t * substream)
unsigned int rate;
if (codec->revision != ALI_5451_V02) {
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock_irq(&codec->reg_lock);
if (codec->revision != ALI_5451_V02)
return -1;
}
rate = snd_ali_get_spdif_in_rate(codec);
if (rate == 0) {
snd_printk(KERN_WARNING "ali_capture_preapre: spdif rate detect err!\n");
rate = 48000;
}
spin_lock_irq(&codec->reg_lock);
bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
if (bValue & 0x10) {
outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
@ -1521,7 +1516,7 @@ static int snd_ali_prepare(snd_pcm_substream_t * substream)
EC);
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock_irq(&codec->reg_lock);
return 0;
}
@ -1554,16 +1549,15 @@ static snd_pcm_uframes_t snd_ali_pointer(snd_pcm_substream_t *substream)
snd_pcm_runtime_t *runtime = substream->runtime;
snd_ali_voice_t *pvoice = (snd_ali_voice_t *) runtime->private_data;
unsigned int cso;
unsigned long flags;
spin_lock_irqsave(&codec->reg_lock, flags);
spin_lock(&codec->reg_lock);
if (!pvoice->running) {
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock_irq(&codec->reg_lock);
return 0;
}
outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock(&codec->reg_lock);
return cso;
}
@ -1618,15 +1612,12 @@ static snd_pcm_hardware_t snd_ali_capture =
static void snd_ali_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
unsigned long flags;
snd_ali_voice_t *pvoice = (snd_ali_voice_t *) runtime->private_data;
ali_t *codec;
if (pvoice) {
codec = pvoice->codec;
spin_lock_irqsave(&codec->reg_lock, flags);
snd_ali_free_voice(pvoice->codec, pvoice);
spin_unlock_irqrestore(&codec->reg_lock, flags);
}
}
@ -1636,16 +1627,10 @@ static int snd_ali_open(snd_pcm_substream_t * substream, int rec, int channel,
ali_t *codec = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
snd_ali_voice_t *pvoice;
unsigned long flags = 0;
spin_lock_irqsave(&codec->reg_lock, flags);
pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec, channel);
if (pvoice == NULL) {
spin_unlock_irqrestore(&codec->reg_lock, flags);
if (pvoice == NULL)
return -EAGAIN;
}
pvoice->codec = codec;
spin_unlock_irqrestore(&codec->reg_lock, flags);
pvoice->substream = substream;
runtime->private_data = pvoice;
@ -1864,13 +1849,12 @@ static int snd_ali5451_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t
static int snd_ali5451_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
unsigned long flags;
ali_t *codec = kcontrol->private_data;
unsigned int enable;
enable = ucontrol->value.integer.value[0] ? 1 : 0;
spin_lock_irqsave(&codec->reg_lock, flags);
spin_lock_irq(&codec->reg_lock);
switch(kcontrol->private_value) {
case 0:
enable = (codec->spdif_mask & 0x02) ? 1 : 0;
@ -1885,19 +1869,18 @@ static int snd_ali5451_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t
break;
}
ucontrol->value.integer.value[0] = enable;
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock_irq(&codec->reg_lock);
return 0;
}
static int snd_ali5451_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
unsigned long flags;
ali_t *codec = kcontrol->private_data;
unsigned int change = 0, enable = 0;
enable = ucontrol->value.integer.value[0] ? 1 : 0;
spin_lock_irqsave(&codec->reg_lock, flags);
spin_lock_irq(&codec->reg_lock);
switch (kcontrol->private_value) {
case 0:
change = (codec->spdif_mask & 0x02) ? 1 : 0;
@ -1942,7 +1925,7 @@ static int snd_ali5451_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t
default:
break;
}
spin_unlock_irqrestore(&codec->reg_lock, flags);
spin_unlock_irq(&codec->reg_lock);
return change;
}