[ALSA] Display SPDIF in status in proc fs 'spdif-in' file.

EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>

sound/pci/emu10k1/emuproc.c

@@ -44,11 +44,10 @@ static void snd_emu10k1_proc_spdif_status(emu10k1_t * emu,
 	unsigned int status, rate = 0;
 	
 	status = snd_emu10k1_ptr_read(emu, status_reg, 0);
-	if (rate_reg > 0)
-		rate = snd_emu10k1_ptr_read(emu, rate_reg, 0);
 
 	snd_iprintf(buffer, "\n%s\n", title);
 
+	if (status != 0xffffffff) {
 		snd_iprintf(buffer, "Professional Mode     : %s\n", (status & SPCS_PROFESSIONAL) ? "yes" : "no");
 		snd_iprintf(buffer, "Not Audio Data        : %s\n", (status & SPCS_NOTAUDIODATA) ? "yes" : "no");
 		snd_iprintf(buffer, "Copyright             : %s\n", (status & SPCS_COPYRIGHT) ? "yes" : "no");
@@ -62,10 +61,16 @@ static void snd_emu10k1_proc_spdif_status(emu10k1_t * emu,
 		snd_iprintf(buffer, "Clock Accuracy        : %s\n", clkaccy[(status & SPCS_CLKACCYMASK) >> 28]);
 
 		if (rate_reg > 0) {
+			rate = snd_emu10k1_ptr_read(emu, rate_reg, 0);
 			snd_iprintf(buffer, "S/PDIF Locked         : %s\n", rate & SRCS_SPDIFLOCKED ? "on" : "off");
 			snd_iprintf(buffer, "Rate Locked           : %s\n", rate & SRCS_RATELOCKED ? "on" : "off");
-		snd_iprintf(buffer, "Estimated Sample Rate : 0x%x\n", rate & SRCS_ESTSAMPLERATE);
+			/* From ((Rate * 48000 ) / 262144); */
+			snd_iprintf(buffer, "Estimated Sample Rate : %d\n", ((rate & 0xFFFFF ) * 375) >> 11); 
+		}
+	} else {
+		snd_iprintf(buffer, "No signal detected.\n");
 	}
+
 }
 
 static void snd_emu10k1_proc_read(snd_info_entry_t *entry, 
@@ -223,15 +228,20 @@ static void snd_emu10k1_proc_read(snd_info_entry_t *entry,
 	snd_iprintf(buffer, "\nAll FX Outputs        :\n");
 	for (idx = 0; idx < (emu->audigy ? 64 : 32); idx++)
 		snd_iprintf(buffer, "  Output %02i [%s]\n", idx, outputs[idx]);
-	snd_emu10k1_proc_spdif_status(emu, buffer, "S/PDIF Output 0", SPCS0, -1);
-	snd_emu10k1_proc_spdif_status(emu, buffer, "S/PDIF Output 1", SPCS1, -1);
-	snd_emu10k1_proc_spdif_status(emu, buffer, "S/PDIF Output 2/3", SPCS2, -1);
-	snd_emu10k1_proc_spdif_status(emu, buffer, "CD-ROM S/PDIF", CDCS, CDSRCS);
-	snd_emu10k1_proc_spdif_status(emu, buffer, "General purpose S/PDIF", GPSCS, GPSRCS);
+}
+
+static void snd_emu10k1_proc_spdif_read(snd_info_entry_t *entry, 
+				  snd_info_buffer_t * buffer)
+{
+	emu10k1_t *emu = entry->private_data;
+	snd_emu10k1_proc_spdif_status(emu, buffer, "CD-ROM S/PDIF In", CDCS, CDSRCS);
+	snd_emu10k1_proc_spdif_status(emu, buffer, "Optical or Coax S/PDIF In", GPSCS, GPSRCS);
+#if 0
 	val = snd_emu10k1_ptr_read(emu, ZVSRCS, 0);
 	snd_iprintf(buffer, "\nZoomed Video\n");
 	snd_iprintf(buffer, "Rate Locked           : %s\n", val & SRCS_RATELOCKED ? "on" : "off");
 	snd_iprintf(buffer, "Estimated Sample Rate : 0x%x\n", val & SRCS_ESTSAMPLERATE);
+#endif
 }
 
 static void snd_emu10k1_proc_acode_read(snd_info_entry_t *entry, 
@@ -526,6 +536,11 @@ int __devinit snd_emu10k1_proc_init(emu10k1_t * emu)
 	if (! snd_card_proc_new(emu->card, "emu10k1", &entry))
 		snd_info_set_text_ops(entry, emu, 2048, snd_emu10k1_proc_read);
 
+	if (emu->card_capabilities->emu10k2_chip) {
+		if (! snd_card_proc_new(emu->card, "spdif-in", &entry))
+			snd_info_set_text_ops(entry, emu, 2048, snd_emu10k1_proc_spdif_read);
+	}
+
 	if (! snd_card_proc_new(emu->card, "voices", &entry))
 		snd_info_set_text_ops(entry, emu, 2048, snd_emu10k1_proc_voices_read);