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Subject[PATCH] 7/10 sound/oss/dmasound/dmasound_awacs.c
From
--- vanilla-2.5.33/sound/oss/dmasound/dmasound_awacs.c	Sat Aug 10 00:03:13 2002
+++ linux-2.5-cli-oss/sound/oss/dmasound/dmasound_awacs.c Mon Sep 9 00:40:07 2002
@@ -66,6 +66,7 @@
#include <linux/tty.h>
#include <linux/vt_kern.h>
#include <linux/irq.h>
+#include <linux/spinlock.h>
#include <linux/kmod.h>
#include <asm/semaphore.h>
#ifdef CONFIG_ADB_CUDA
@@ -397,6 +398,7 @@
static void
headphone_intr(int irq, void *devid, struct pt_regs *regs)
{
+ spin_lock(&dmasound.lock);
if (read_audio_gpio(gpio_headphone_detect) == gpio_headphone_detect_pol) {
printk(KERN_INFO "Audio jack plugged, muting speakers.\n");
write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol);
@@ -406,6 +408,7 @@
write_audio_gpio(gpio_amp_mute, !gpio_amp_mute_pol);
write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol);
}
+ spin_unlock(&dmasound.lock);
}


@@ -804,7 +807,7 @@

/* CHECK: how much of this *really* needs IRQs masked? */

- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);
count = 300 ; /* > two cycles at the lowest sample rate */

/* what we want to send next */
@@ -871,7 +874,7 @@
out_le32(&awacs_txdma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
++write_sq.active;
}
- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);
}

static void PMacPlay(void)
@@ -889,14 +892,14 @@
if (read_sq.active)
return;

- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);

/* This is all we have to do......Just start it up.
*/
out_le32(&awacs_rxdma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
read_sq.active = 1;

- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);
}

/* if the TX status comes up "DEAD" - reported on some Power Computing machines
@@ -929,6 +932,7 @@
/* != 0 when we are dealing with a DEAD xfer */
static int emergency_in_use = 0 ;

+ spin_lock(&dmasound.lock);
while (write_sq.active > 0) { /* we expect to have done something*/
if (emergency_in_use) /* we are dealing with DEAD xfer */
cp = emergency_dbdma_cmd ;
@@ -1004,6 +1008,7 @@
/* make the wake-on-empty conditional on syncing */
if (!write_sq.active && (write_sq.syncing & 1))
WAKE_UP(write_sq.sync_queue); /* any time we're empty */
+ spin_unlock(&dmasound.lock);
}


@@ -1025,6 +1030,7 @@
if (read_sq.active == 0)
return;

+ spin_lock(&dmasound.lock);
/* Check multiple buffers in case we were held off from
* interrupt processing for a long time. Geeze, I really hope
* this doesn't happen.
@@ -1056,6 +1062,7 @@
/* should complete clearing the DEAD status */
out_le32(&awacs_rxdma->control,
((RUN|WAKE) << 16) + (RUN|WAKE));
+ spin_unlock(&dmasound.lock);
return; /* try this block again */
}
/* Clear status and move on to next buffer.
@@ -1083,13 +1090,16 @@
}

WAKE_UP(read_sq.action_queue);
+ spin_unlock(&dmasound.lock);
}


static void
pmac_awacs_intr(int irq, void *devid, struct pt_regs *regs)
{
- int ctrl = in_le32(&awacs->control);
+ int ctrl;
+ spin_lock(&dmasound.lock);
+ ctrl = in_le32(&awacs->control);

if (ctrl & MASK_PORTCHG) {
/* do something when headphone is plugged/unplugged? */
@@ -1102,6 +1112,7 @@
}
/* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
out_le32(&awacs->control, ctrl);
+ spin_unlock(&dmasound.lock);
}

static void
@@ -1125,7 +1136,7 @@
unsigned long flags;
int count = 600 ; /* > four samples at lowest rate */

- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);
if (beep_playing) {
st_le16(&beep_dbdma_cmd->command, DBDMA_STOP);
out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
@@ -1141,7 +1152,7 @@
out_le32(&awacs->byteswap, 0);
beep_playing = 0;
}
- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);
}

static struct timer_list beep_timer = {
@@ -1189,19 +1200,19 @@
return;
#endif
}
- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);
del_timer(&beep_timer);
if (ticks) {
beep_timer.expires = jiffies + ticks;
add_timer(&beep_timer);
}
if (beep_playing || write_sq.active || beep_buf == NULL) {
- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);
return; /* too hard, sorry :-( */
}
beep_playing = 1;
st_le16(&beep_dbdma_cmd->command, OUTPUT_MORE + BR_ALWAYS);
- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);

if (hz == beep_hz_cache && beep_vol == beep_volume_cache) {
nsamples = beep_nsamples_cache;
@@ -1227,7 +1238,7 @@
st_le32(&beep_dbdma_cmd->phy_addr, virt_to_bus(beep_buf));
awacs_beep_state = 1;

- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);
if (beep_playing) { /* i.e. haven't been terminated already */
int count = 300 ;
out_le32(&awacs_txdma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
@@ -1242,7 +1253,7 @@
(void)in_le32(&awacs_txdma->status);
out_le32(&awacs_txdma->control, RUN | (RUN << 16));
}
- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);
}

/* used in init and for wake-up */
@@ -1430,7 +1441,7 @@
unsigned long flags;

/* should have timeouts here */
- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);

out_le32(&awacs->codec_ctrl, addr + 0x100000);
awacs_burgundy_busy_wait();
@@ -1452,7 +1463,7 @@
awacs_burgundy_extend_wait();
val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<24;

- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);

return val;
}
@@ -1472,14 +1483,14 @@
unsigned long flags;

/* should have timeouts here */
- save_flags(flags); cli();
+ spin_lock_irqsave(&dmasound.lock, flags);

out_le32(&awacs->codec_ctrl, addr + 0x100000);
awacs_burgundy_busy_wait();
awacs_burgundy_extend_wait();
val += (in_le32(&awacs->codec_stat) >> 4) & 0xff;

- restore_flags(flags);
+ spin_unlock_irqrestore(&dmasound.lock, flags);

return val;
}
-
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