TCBS
snd_emu10k1_ptr_write(emu, TCBS, 0, TCBS_BUFFSIZE_256K); /* taken from original driver */
TCBS, TCBS_BUFFSIZE_16K,
snd_emu10k1_ptr_write(emu, TCBS, 0, TCBS_BUFFSIZE_16K);
snd_emu10k1_ptr_write(emu, TCBS, 0, size_reg);
snd_emu10k1_ptr_write(emu, TCBS, 0, size_reg);