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ALSA: arm: Use guard() for spin locks

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Clean up the code using guard() for spin locks.

Merely code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2025-09-10 13:09:18 +02:00
parent 56100eed4f
commit 2d7d8e0fa5
1 changed files with 68 additions and 80 deletions
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148
sound/arm/aaci.c
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@@ -210,45 +210,43 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
return; return;
} }
spin_lock(&aacirun->lock); scoped_guard(spinlock, &aacirun->lock) {
ptr = aacirun->ptr;
do {
unsigned int len = aacirun->fifo_bytes;
u32 val;
ptr = aacirun->ptr; if (aacirun->bytes <= 0) {
do { aacirun->bytes += aacirun->period;
unsigned int len = aacirun->fifo_bytes; period_elapsed = true;
u32 val; }
if (!(aacirun->cr & CR_EN))
break;
if (aacirun->bytes <= 0) { val = readl(aacirun->base + AACI_SR);
aacirun->bytes += aacirun->period; if (!(val & SR_RXHF))
period_elapsed = true; break;
} if (!(val & SR_RXFF))
if (!(aacirun->cr & CR_EN)) len >>= 1;
break;
val = readl(aacirun->base + AACI_SR); aacirun->bytes -= len;
if (!(val & SR_RXHF))
break;
if (!(val & SR_RXFF))
len >>= 1;
aacirun->bytes -= len; /* reading 16 bytes at a time */
for( ; len > 0; len -= 16) {
asm(
"ldmia %1, {r0, r1, r2, r3}\n\t"
"stmia %0!, {r0, r1, r2, r3}"
: "+r" (ptr)
: "r" (aacirun->fifo)
: "r0", "r1", "r2", "r3", "cc");
/* reading 16 bytes at a time */ if (ptr >= aacirun->end)
for( ; len > 0; len -= 16) { ptr = aacirun->start;
asm( }
"ldmia %1, {r0, r1, r2, r3}\n\t" } while(1);
"stmia %0!, {r0, r1, r2, r3}"
: "+r" (ptr)
: "r" (aacirun->fifo)
: "r0", "r1", "r2", "r3", "cc");
if (ptr >= aacirun->end) aacirun->ptr = ptr;
ptr = aacirun->start; }
}
} while(1);
aacirun->ptr = ptr;
spin_unlock(&aacirun->lock);
if (period_elapsed) if (period_elapsed)
snd_pcm_period_elapsed(aacirun->substream); snd_pcm_period_elapsed(aacirun->substream);
@@ -270,45 +268,43 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
return; return;
} }
spin_lock(&aacirun->lock); scoped_guard(spinlock, &aacirun->lock) {
ptr = aacirun->ptr;
do {
unsigned int len = aacirun->fifo_bytes;
u32 val;
ptr = aacirun->ptr; if (aacirun->bytes <= 0) {
do { aacirun->bytes += aacirun->period;
unsigned int len = aacirun->fifo_bytes; period_elapsed = true;
u32 val; }
if (!(aacirun->cr & CR_EN))
break;
if (aacirun->bytes <= 0) { val = readl(aacirun->base + AACI_SR);
aacirun->bytes += aacirun->period; if (!(val & SR_TXHE))
period_elapsed = true; break;
} if (!(val & SR_TXFE))
if (!(aacirun->cr & CR_EN)) len >>= 1;
break;
val = readl(aacirun->base + AACI_SR); aacirun->bytes -= len;
if (!(val & SR_TXHE))
break;
if (!(val & SR_TXFE))
len >>= 1;
aacirun->bytes -= len; /* writing 16 bytes at a time */
for ( ; len > 0; len -= 16) {
asm(
"ldmia %0!, {r0, r1, r2, r3}\n\t"
"stmia %1, {r0, r1, r2, r3}"
: "+r" (ptr)
: "r" (aacirun->fifo)
: "r0", "r1", "r2", "r3", "cc");
/* writing 16 bytes at a time */ if (ptr >= aacirun->end)
for ( ; len > 0; len -= 16) { ptr = aacirun->start;
asm( }
"ldmia %0!, {r0, r1, r2, r3}\n\t" } while (1);
"stmia %1, {r0, r1, r2, r3}"
: "+r" (ptr)
: "r" (aacirun->fifo)
: "r0", "r1", "r2", "r3", "cc");
if (ptr >= aacirun->end) aacirun->ptr = ptr;
ptr = aacirun->start; }
}
} while (1);
aacirun->ptr = ptr;
spin_unlock(&aacirun->lock);
if (period_elapsed) if (period_elapsed)
snd_pcm_period_elapsed(aacirun->substream); snd_pcm_period_elapsed(aacirun->substream);
@@ -577,10 +573,8 @@ static void aaci_pcm_playback_start(struct aaci_runtime *aacirun)
static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{ {
struct aaci_runtime *aacirun = substream->runtime->private_data; struct aaci_runtime *aacirun = substream->runtime->private_data;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&aacirun->lock, flags); guard(spinlock_irqsave)(&aacirun->lock);
switch (cmd) { switch (cmd) {
case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_START:
@@ -606,12 +600,10 @@ static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cm
break; break;
default: default:
ret = -EINVAL; return -EINVAL;
} }
spin_unlock_irqrestore(&aacirun->lock, flags); return 0;
return ret;
} }
static const struct snd_pcm_ops aaci_playback_ops = { static const struct snd_pcm_ops aaci_playback_ops = {
@@ -661,10 +653,8 @@ static void aaci_pcm_capture_start(struct aaci_runtime *aacirun)
static int aaci_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) static int aaci_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{ {
struct aaci_runtime *aacirun = substream->runtime->private_data; struct aaci_runtime *aacirun = substream->runtime->private_data;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&aacirun->lock, flags); guard(spinlock_irqsave)(&aacirun->lock);
switch (cmd) { switch (cmd) {
case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_START:
@@ -690,12 +680,10 @@ static int aaci_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd
break; break;
default: default:
ret = -EINVAL; return -EINVAL;
} }
spin_unlock_irqrestore(&aacirun->lock, flags); return 0;
return ret;
} }
static int aaci_pcm_capture_prepare(struct snd_pcm_substream *substream) static int aaci_pcm_capture_prepare(struct snd_pcm_substream *substream)