ALSA: ALS4000 driver work, step 2

- more register naming work
- finally figured out that weird CR register stuff
  (and did I mention that I hate _really_ undecipherable open-coded values?)
- fix handling of IRQ sharing in interrupt handler
  (hopefully properly, otherwise I'd be grateful to hear your
  pedantic comments ;)
- add handy SPECS_PAGE references wherever useful
- comments, cleanup
- add me as module author

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

include/sound/sb.h

@@ -240,11 +240,15 @@ struct snd_sb {
 #define SB_DT019X_CAP_MAIN	0x07
 
 #define SB_ALS4000_MONO_IO_CTRL	0x4b
+#define SB_ALS4000_OUT_MIXER_CTRL_2	0x4c
 #define SB_ALS4000_MIC_IN_GAIN	0x4d
+#define SB_ALS4000_ANALOG_REFRNC_VOLT_CTRL 0x4e
 #define SB_ALS4000_FMDAC	0x4f
 #define SB_ALS4000_3D_SND_FX	0x50
 #define SB_ALS4000_3D_TIME_DELAY	0x51
 #define SB_ALS4000_3D_AUTO_MUTE	0x52
+#define SB_ALS4000_ANALOG_BLOCK_CTRL 0x53
+#define SB_ALS4000_3D_DELAYLINE_PATTERN 0x54
 #define SB_ALS4000_QSOUND	0xdb
 
 /* IRQ setting bitmap */
@@ -257,6 +261,7 @@ struct snd_sb {
 #define SB_IRQTYPE_8BIT		0x01
 #define SB_IRQTYPE_16BIT	0x02
 #define SB_IRQTYPE_MPUIN	0x04
+#define ALS4K_IRQTYPE_CR1E_DMA	0x20
 
 /* DMA setting bitmap */
 #define SB_DMASETUP_DMA0	0x01