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Diffstat (limited to 'sound/pci/emu10k1/io.c')
-rw-r--r--sound/pci/emu10k1/io.c48
1 files changed, 20 insertions, 28 deletions
diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c
index 5cb8acf5b1..f4a1c2d4b0 100644
--- a/sound/pci/emu10k1/io.c
+++ b/sound/pci/emu10k1/io.c
@@ -290,20 +290,28 @@ static void snd_emu1010_fpga_write_locked(struct snd_emu10k1 *emu, u32 reg, u32
void snd_emu1010_fpga_write(struct snd_emu10k1 *emu, u32 reg, u32 value)
{
- unsigned long flags;
+ if (snd_BUG_ON(!mutex_is_locked(&emu->emu1010.lock)))
+ return;
+ snd_emu1010_fpga_write_locked(emu, reg, value);
+}
- spin_lock_irqsave(&emu->emu_lock, flags);
+void snd_emu1010_fpga_write_lock(struct snd_emu10k1 *emu, u32 reg, u32 value)
+{
+ snd_emu1010_fpga_lock(emu);
snd_emu1010_fpga_write_locked(emu, reg, value);
- spin_unlock_irqrestore(&emu->emu_lock, flags);
+ snd_emu1010_fpga_unlock(emu);
}
-static void snd_emu1010_fpga_read_locked(struct snd_emu10k1 *emu, u32 reg, u32 *value)
+void snd_emu1010_fpga_read(struct snd_emu10k1 *emu, u32 reg, u32 *value)
{
// The higest input pin is used as the designated interrupt trigger,
// so it needs to be masked out.
// But note that any other input pin change will also cause an IRQ,
// so using this function often causes an IRQ as a side effect.
u32 mask = emu->card_capabilities->ca0108_chip ? 0x1f : 0x7f;
+
+ if (snd_BUG_ON(!mutex_is_locked(&emu->emu1010.lock)))
+ return;
if (snd_BUG_ON(reg > 0x3f))
return;
reg += 0x40; /* 0x40 upwards are registers. */
@@ -314,47 +322,31 @@ static void snd_emu1010_fpga_read_locked(struct snd_emu10k1 *emu, u32 reg, u32 *
*value = ((inw(emu->port + A_GPIO) >> 8) & mask);
}
-void snd_emu1010_fpga_read(struct snd_emu10k1 *emu, u32 reg, u32 *value)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&emu->emu_lock, flags);
- snd_emu1010_fpga_read_locked(emu, reg, value);
- spin_unlock_irqrestore(&emu->emu_lock, flags);
-}
-
/* Each Destination has one and only one Source,
* but one Source can feed any number of Destinations simultaneously.
*/
void snd_emu1010_fpga_link_dst_src_write(struct snd_emu10k1 *emu, u32 dst, u32 src)
{
- unsigned long flags;
-
if (snd_BUG_ON(dst & ~0x71f))
return;
if (snd_BUG_ON(src & ~0x71f))
return;
- spin_lock_irqsave(&emu->emu_lock, flags);
- snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTHI, dst >> 8);
- snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTLO, dst & 0x1f);
- snd_emu1010_fpga_write_locked(emu, EMU_HANA_SRCHI, src >> 8);
- snd_emu1010_fpga_write_locked(emu, EMU_HANA_SRCLO, src & 0x1f);
- spin_unlock_irqrestore(&emu->emu_lock, flags);
+ snd_emu1010_fpga_write(emu, EMU_HANA_DESTHI, dst >> 8);
+ snd_emu1010_fpga_write(emu, EMU_HANA_DESTLO, dst & 0x1f);
+ snd_emu1010_fpga_write(emu, EMU_HANA_SRCHI, src >> 8);
+ snd_emu1010_fpga_write(emu, EMU_HANA_SRCLO, src & 0x1f);
}
u32 snd_emu1010_fpga_link_dst_src_read(struct snd_emu10k1 *emu, u32 dst)
{
- unsigned long flags;
u32 hi, lo;
if (snd_BUG_ON(dst & ~0x71f))
return 0;
- spin_lock_irqsave(&emu->emu_lock, flags);
- snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTHI, dst >> 8);
- snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTLO, dst & 0x1f);
- snd_emu1010_fpga_read_locked(emu, EMU_HANA_SRCHI, &hi);
- snd_emu1010_fpga_read_locked(emu, EMU_HANA_SRCLO, &lo);
- spin_unlock_irqrestore(&emu->emu_lock, flags);
+ snd_emu1010_fpga_write(emu, EMU_HANA_DESTHI, dst >> 8);
+ snd_emu1010_fpga_write(emu, EMU_HANA_DESTLO, dst & 0x1f);
+ snd_emu1010_fpga_read(emu, EMU_HANA_SRCHI, &hi);
+ snd_emu1010_fpga_read(emu, EMU_HANA_SRCLO, &lo);
return (hi << 8) | lo;
}