[ALSA] ice1724 - Improved the Juli rate setting

* moving most of clock-specific code to card-specific routines
* support for ESI Juli
* to-be-researched - monitoring of analog/digital inputs
Signed-off-by: Pavel Hofman <dustin@seznam.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/Kconfig

@@ -697,6 +697,7 @@ config SND_ICE1724
 	depends on SND
 	select SND_MPU401_UART
 	select SND_AC97_CODEC
+	select SND_VMASTER
 	help
 	  Say Y here to include support for soundcards based on
 	  ICE/VT1724/1720 (Envy24HT/PT) chips.

sound/pci/ice1712/ice1712.h

@@ -367,6 +367,15 @@ struct snd_ice1712 {
 
 	/* other board-specific data */
 	void *spec;
+
+	/* VT172x specific */
+	int pro_rate_default;
+	int (*is_spdif_master)(struct snd_ice1712 *ice);
+	unsigned int (*get_rate)(struct snd_ice1712 *ice);
+	void (*set_rate)(struct snd_ice1712 *ice, unsigned int rate);
+	unsigned char (*set_mclk)(struct snd_ice1712 *ice, unsigned int rate);
+	void (*set_spdif_clock)(struct snd_ice1712 *ice);
+
 };