diff options
Diffstat (limited to 'sound/pci/emu10k1/io.c')
| -rw-r--r-- | sound/pci/emu10k1/io.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c index 2862e17446fe..a02638350a0a 100644 --- a/sound/pci/emu10k1/io.c +++ b/sound/pci/emu10k1/io.c @@ -227,11 +227,14 @@ int snd_emu10k1_i2c_write(struct snd_emu10k1 *emu, int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, u32 reg, u32 value) { + unsigned long flags; + if (reg > 0x3f) return 1; reg += 0x40; /* 0x40 upwards are registers. */ if (value < 0 || value > 0x3f) /* 0 to 0x3f are values */ return 1; + spin_lock_irqsave(&emu->emu_lock, flags); outl(reg, emu->port + A_IOCFG); udelay(10); outl(reg | 0x80, emu->port + A_IOCFG); /* High bit clocks the value into the fpga. */ @@ -239,20 +242,24 @@ int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, u32 reg, u32 value) outl(value, emu->port + A_IOCFG); udelay(10); outl(value | 0x80 , emu->port + A_IOCFG); /* High bit clocks the value into the fpga. */ + spin_unlock_irqrestore(&emu->emu_lock, flags); return 0; } int snd_emu1010_fpga_read(struct snd_emu10k1 * emu, u32 reg, u32 *value) { + unsigned long flags; if (reg > 0x3f) return 1; reg += 0x40; /* 0x40 upwards are registers. */ + spin_lock_irqsave(&emu->emu_lock, flags); outl(reg, emu->port + A_IOCFG); udelay(10); outl(reg | 0x80, emu->port + A_IOCFG); /* High bit clocks the value into the fpga. */ udelay(10); *value = ((inl(emu->port + A_IOCFG) >> 8) & 0x7f); + spin_unlock_irqrestore(&emu->emu_lock, flags); return 0; } |