diff options
Diffstat (limited to 'sound/pci/emu10k1/io.c')
| -rw-r--r-- | sound/pci/emu10k1/io.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c index 029e7856c43b..27ab7d1788a0 100644 --- a/sound/pci/emu10k1/io.c +++ b/sound/pci/emu10k1/io.c @@ -167,6 +167,51 @@ int snd_emu10k1_spi_write(struct snd_emu10k1 * emu, return 0; } +int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, int reg, int value) +{ + if (reg < 0 || reg > 0x3f) + return 1; + reg += 0x40; /* 0x40 upwards are registers. */ + if (value < 0 || value > 0x3f) /* 0 to 0x3f are values */ + return 1; + 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); + outl(value, emu->port + A_IOCFG); + udelay(10); + outl(value | 0x80 , emu->port + A_IOCFG); /* High bit clocks the value into the fpga. */ + + return 0; +} + +int snd_emu1010_fpga_read(struct snd_emu10k1 * emu, int reg, int *value) +{ + if (reg < 0 || reg > 0x3f) + return 1; + reg += 0x40; /* 0x40 upwards are registers. */ + 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); + + return 0; +} + +/* Each Destination has one and only one Source, + * but one Source can feed any number of Destinations simultaneously. + */ +int snd_emu1010_fpga_link_dst_src_write(struct snd_emu10k1 * emu, int dst, int src) +{ + snd_emu1010_fpga_write(emu, 0x00, ((dst >> 8) & 0x3f) ); + snd_emu1010_fpga_write(emu, 0x01, (dst & 0x3f) ); + snd_emu1010_fpga_write(emu, 0x02, ((src >> 8) & 0x3f) ); + snd_emu1010_fpga_write(emu, 0x03, (src & 0x3f) ); + + return 0; +} + void snd_emu10k1_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb) { unsigned long flags; |