GAM_MIXER_CRB
DBGFS_DUMP(GAM_MIXER_CRB);
mixer_dbg_crb(s, sti_mixer_reg_read(mixer, GAM_MIXER_CRB));
val = sti_mixer_reg_read(mixer, GAM_MIXER_CRB);
sti_mixer_reg_write(mixer, GAM_MIXER_CRB, val);
sti_mixer_reg_read(mixer, GAM_MIXER_CRB));