From e58aee95806c9d2bbcfc84cb85ce958e360165ef Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Tue, 13 May 2008 09:20:51 +0200 Subject: [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 Signed-off-by: Jaroslav Kysela --- sound/pci/oxygen/oxygen_io.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) (limited to 'sound/pci/oxygen/oxygen_io.c') diff --git a/sound/pci/oxygen/oxygen_io.c b/sound/pci/oxygen/oxygen_io.c index 5569606ee87f..83f135f80df4 100644 --- a/sound/pci/oxygen/oxygen_io.c +++ b/sound/pci/oxygen/oxygen_io.c @@ -44,18 +44,21 @@ EXPORT_SYMBOL(oxygen_read32); 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 @@ void oxygen_write8_masked(struct oxygen *chip, unsigned int reg, 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 @@ void oxygen_write16_masked(struct oxygen *chip, unsigned int reg, 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 @@ void oxygen_write32_masked(struct oxygen *chip, unsigned int reg, 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 @@ void oxygen_write_ac97(struct oxygen *chip, unsigned int codec, 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"); } -- cgit v1.2.3-55-g7522