[ALSA] oxygen: save register writes
Save the written values of all CMI8788 and AC97 registers and of some of
the DAC/ADC registers so that it is possible to restore the register
state later.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/oxygen/oxygen_io.c b/sound/pci/oxygen/oxygen_io.c
index 5569606..83f135f 100644
--- a/sound/pci/oxygen/oxygen_io.c
+++ b/sound/pci/oxygen/oxygen_io.c
@@ -44,18 +44,21 @@
void oxygen_write8(struct oxygen *chip, unsigned int reg, u8 value)
{
outb(value, chip->addr + reg);
+ chip->saved_registers._8[reg] = value;
}
EXPORT_SYMBOL(oxygen_write8);
void oxygen_write16(struct oxygen *chip, unsigned int reg, u16 value)
{
outw(value, chip->addr + reg);
+ chip->saved_registers._16[reg / 2] = cpu_to_le16(value);
}
EXPORT_SYMBOL(oxygen_write16);
void oxygen_write32(struct oxygen *chip, unsigned int reg, u32 value)
{
outl(value, chip->addr + reg);
+ chip->saved_registers._32[reg / 4] = cpu_to_le32(value);
}
EXPORT_SYMBOL(oxygen_write32);
@@ -63,7 +66,10 @@
u8 value, u8 mask)
{
u8 tmp = inb(chip->addr + reg);
- outb((tmp & ~mask) | (value & mask), chip->addr + reg);
+ tmp &= ~mask;
+ tmp |= value & mask;
+ outb(tmp, chip->addr + reg);
+ chip->saved_registers._8[reg] = tmp;
}
EXPORT_SYMBOL(oxygen_write8_masked);
@@ -71,7 +77,10 @@
u16 value, u16 mask)
{
u16 tmp = inw(chip->addr + reg);
- outw((tmp & ~mask) | (value & mask), chip->addr + reg);
+ tmp &= ~mask;
+ tmp |= value & mask;
+ outw(tmp, chip->addr + reg);
+ chip->saved_registers._16[reg / 2] = cpu_to_le16(tmp);
}
EXPORT_SYMBOL(oxygen_write16_masked);
@@ -79,7 +88,10 @@
u32 value, u32 mask)
{
u32 tmp = inl(chip->addr + reg);
- outl((tmp & ~mask) | (value & mask), chip->addr + reg);
+ tmp &= ~mask;
+ tmp |= value & mask;
+ outl(tmp, chip->addr + reg);
+ chip->saved_registers._32[reg / 4] = cpu_to_le32(tmp);
}
EXPORT_SYMBOL(oxygen_write32_masked);
@@ -128,8 +140,10 @@
oxygen_write32(chip, OXYGEN_AC97_REGS, reg);
/* require two "completed" writes, just to be sure */
if (oxygen_ac97_wait(chip, OXYGEN_AC97_INT_WRITE_DONE) >= 0 &&
- ++succeeded >= 2)
+ ++succeeded >= 2) {
+ chip->saved_ac97_registers[codec][index / 2] = data;
return;
+ }
}
snd_printk(KERN_ERR "AC'97 write timeout\n");
}