ALSA: pcxhr - add support for pcxhr stereo sound cards

- Add support for pcxhr stereo cards
- do some clean up
Signed-off-by: Markus Bollinger <bollinger@digigram.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/pcxhr/pcxhr_core.h

@@ -65,7 +65,7 @@ enum {
 	CMD_RESYNC_AUDIO_INPUTS,	/* cmd_len = 1	stat_len = 0 */
 	CMD_GET_DSP_RESOURCES,		/* cmd_len = 1	stat_len = 4 */
 	CMD_SET_TIMER_INTERRUPT,	/* cmd_len = 1	stat_len = 0 */
-	CMD_RES_PIPE,			/* cmd_len = 2	stat_len = 0 */
+	CMD_RES_PIPE,			/* cmd_len >=2	stat_len = 0 */
 	CMD_FREE_PIPE,			/* cmd_len = 1	stat_len = 0 */
 	CMD_CONF_PIPE,			/* cmd_len = 2	stat_len = 0 */
 	CMD_STOP_PIPE,			/* cmd_len = 1	stat_len = 0 */
@@ -96,6 +96,8 @@ void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd);
 void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh* rmh, int capture, unsigned int param1,
 			       unsigned int param2, unsigned int param3);
 
+#define DSP_EXT_CMD_SET(x) (x->dsp_version > 0x012800)
+
 /*
  send the rmh
  */
@@ -110,6 +112,7 @@ int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh);
 #define IO_NUM_REG_STATUS		5
 #define IO_NUM_REG_CUER			10
 #define IO_NUM_UER_CHIP_REG		11
+#define IO_NUM_REG_CONFIG_SRC		12
 #define IO_NUM_REG_OUT_ANA_LEVEL	20
 #define IO_NUM_REG_IN_ANA_LEVEL		21