sti_mixer_reg_read
mixer_dbg_ctl(s, sti_mixer_reg_read(mixer, GAM_MIXER_CTL));
mixer_dbg_crb(s, sti_mixer_reg_read(mixer, GAM_MIXER_CRB));
u32 val = sti_mixer_reg_read(mixer, GAM_MIXER_CTL);
val = sti_mixer_reg_read(mixer, GAM_MIXER_CRB);
sti_mixer_reg_read(mixer, GAM_MIXER_CRB));
val = sti_mixer_reg_read(mixer, GAM_MIXER_CTL);
sti_mixer_reg_read(mixer, reg))