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ALSA: hda - Add some workarounds for Creative IBG

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Creative HD-audio controller chips require some workarounds:
 - Additional delay before RIRB response
 - Set the initial RIRB counter to 0xc0

The latter seems to be done in general in Windows driver, so we may
use this value later for all types if it's confirmed to work better.

Reported-by: Wai Yew CHAY <wychay@ctl.creative.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2010-10-21 09:03:25 +02:00
parent 24b55c69b6
commit 14d34f166c
1 changed files with 12 additions and 4 deletions
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16
sound/pci/hda/hda_intel.c
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@ -458,6 +458,7 @@ enum {
AZX_DRIVER_ULI,
AZX_DRIVER_NVIDIA,
AZX_DRIVER_TERA,
AZX_DRIVER_CTX,
AZX_DRIVER_GENERIC,
AZX_NUM_DRIVERS, /* keep this as last entry */
};
@ -473,6 +474,7 @@ static char *driver_short_names[] __devinitdata = {
[AZX_DRIVER_ULI] = "HDA ULI M5461",
[AZX_DRIVER_NVIDIA] = "HDA NVidia",
[AZX_DRIVER_TERA] = "HDA Teradici",
[AZX_DRIVER_CTX] = "HDA Creative",
[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
};
@ -563,7 +565,10 @@ static void azx_init_cmd_io(struct azx *chip)
/* reset the rirb hw write pointer */
azx_writew(chip, RIRBWP, ICH6_RIRBWP_RST);
/* set N=1, get RIRB response interrupt for new entry */
azx_writew(chip, RINTCNT, 1);
if (chip->driver_type == AZX_DRIVER_CTX)
azx_writew(chip, RINTCNT, 0xc0);
else
azx_writew(chip, RINTCNT, 1);
/* enable rirb dma and response irq */
azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
spin_unlock_irq(&chip->reg_lock);
@ -1136,8 +1141,11 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
/* clear rirb int */
status = azx_readb(chip, RIRBSTS);
if (status & RIRB_INT_MASK) {
if (status & RIRB_INT_RESPONSE)
if (status & RIRB_INT_RESPONSE) {
if (chip->driver_type == AZX_DRIVER_CTX)
udelay(80);
azx_update_rirb(chip);
}
azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
}
@ -2784,10 +2792,10 @@ static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
.class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
.class_mask = 0xffffff,
.driver_data = AZX_DRIVER_GENERIC },
.driver_data = AZX_DRIVER_CTX },
#else
/* this entry seems still valid -- i.e. without emu20kx chip */
{ PCI_DEVICE(0x1102, 0x0009), .driver_data = AZX_DRIVER_GENERIC },
{ PCI_DEVICE(0x1102, 0x0009), .driver_data = AZX_DRIVER_CTX },
#endif
/* Vortex86MX */
{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },