diff options
| -rw-r--r-- | sound/pci/cs4281.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c index 8b42e8631f2a..b6e1854e9389 100644 --- a/sound/pci/cs4281.c +++ b/sound/pci/cs4281.c @@ -206,7 +206,10 @@ MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled)."); #define BA0_PMCS 0x0344 /* Power Management Control/Status */ #define BA0_CWPR 0x03e0 /* Configuration Write Protect */ + #define BA0_EPPMC 0x03e4 /* Extended PCI Power Management Control */ +#define BA0_EPPMC_FPDN (1<<14) /* Full Power DowN */ + #define BA0_GPIOR 0x03e8 /* GPIO Pin Interface Register */ #define BA0_SPMC 0x03ec /* Serial Port Power Management Control (& ASDIN2 enable) */ @@ -1461,6 +1464,11 @@ static int snd_cs4281_chip_init(cs4281_t *chip) int timeout; int retry_count = 2; + /* Having EPPMC.FPDN=1 prevent proper chip initialisation */ + tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC); + if (tmp & BA0_EPPMC_FPDN) + snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN); + __retry: tmp = snd_cs4281_peekBA0(chip, BA0_CFLR); if (tmp != BA0_CFLR_DEFAULT) { |