-void snd_sbmixer_write(sb_t *chip, unsigned char reg, unsigned char data);
-unsigned char snd_sbmixer_read(sb_t *chip, unsigned char reg);
-int snd_sbmixer_new(sb_t *chip);
+void snd_sbmixer_write(struct snd_sb *chip, unsigned char reg, unsigned char data);
+unsigned char snd_sbmixer_read(struct snd_sb *chip, unsigned char reg);
+int snd_sbmixer_new(struct snd_sb *chip);
+#ifdef CONFIG_PM
+void snd_sbmixer_suspend(struct snd_sb *chip);
+void snd_sbmixer_resume(struct snd_sb *chip);
+#endif