[coreboot] [PATCH] WPCD376I Super I/O support

[Sean Young]

On the Intel DG33TL motherboard, the Super I/O is an WPCD376I. Output:

# ./superiotool -d
Found Winbond WPCD376I (sid=0xf1, srid=0x91) at 0x2e
Register dump:
idx 10 12 13 20 21 22 23 24  25 26 27 28 29 2a 2b 2c  2d 2e 2f
val 00 00 00 f1 91 00 00 c0  01 00 91 00 91 00 00 00  00 00 00
def 00 00 00 f1 11 00 00 00  RR 00 MM RR 01 2e RR RR  RR RR RR
LDN 0x00 (Floppy)
idx 30 60 61 70 71 74 75 f0  f1 f8
val 00 00 00 06 03 02 04 24  00 24
def 00 03 f2 06 03 02 04 24  00 24
LDN 0x01 (Parallel port)
idx 30 60 61 70 71 74 75 f0  f8
val 00 00 00 07 02 04 04 92  04
def 00 02 78 07 02 04 04 f2  07
LDN 0x02 (IR)
idx 30 60 61 70 71 74 75 f0
val 00 00 00 03 03 04 04 02
def 00 02 f8 03 03 04 04 02
LDN 0x03 (COM1)
idx 30 60 61 70 71 74 75 f0
val 01 03 f8 04 03 04 04 02
def 00 03 f8 04 03 04 04 02
LDN 0x04 (System wake-up control (SWC))
idx 30 50 60 61 62 63 70 71  74 75
val 01 00 06 d0 06 c0 00 03  04 04
def 00 00 00 00 00 00 00 03  04 04
LDN 0x05 (Mouse)
idx 30 70 71 74 75
val 01 0c 02 04 04
def 00 0c 02 04 04
LDN 0x06 (Keyboard)
idx 30 60 61 62 63 70 71 74  75 f0
val 01 00 60 00 64 01 02 04  04 40
def 00 00 60 00 64 01 02 04  04 40
LDN 0x07 (GPIO)
idx 30 50 60 61 70 71 74 75  f0 f1 f2 f3 f8
val 01 00 06 80 00 03 04 04  07 00 00 00 00
def 00 00 00 00 00 03 04 04  00 MM 00 MM 01

Signed-off-by: Sean Young <sean at mess.org>

Index: nsc.c
===================================================================
--- nsc.c	(revision 4887)
+++ nsc.c	(working copy)
@@ -400,7 +400,7 @@
 		{EOT}}},
 	{0xf0, "PC87372", {
 		{EOT}}},
-	{0xf1, "PC8374L", {
+	{0x0f1, "PC8374L", {
 		{NOLDN, NULL,
 			{0x10,0x12,0x13,0x20,0x21,0x22,0x23,0x24,0x25,0x26,
 			 0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
@@ -442,6 +442,45 @@
 			{0x30,0x50,0x60,0x61,0x70,0x71,0x74,0x75,0xf0,EOT},
 			{0x00,0x00,0x00,0x00,0x00,0x03,0x04,0x04,0x05,EOT}},
 		{EOT}}},
+	{0x8f1, "WPCD376I", {
+		{NOLDN, NULL,
+			{0x10,0x12,0x13,0x20,0x21,0x22,0x23,0x24,0x25,0x26,
+			 0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,EOT},
+			{0x00,0x00,0x00,0xf1,0x11,0x00,0x00,0x00,RSVD,0x00,
+			 MISC,RSVD,0x01,0x2e,RSVD,RSVD,RSVD,RSVD,RSVD,EOT}},
+		{0x0, "Floppy",
+			{0x30,0x60,0x61,0x70,0x71,0x74,0x75,0xf0,0xf1,0xf8,
+			 EOT},
+			{0x00,0x03,0xf2,0x06,0x03,0x02,0x04,0x24,0x00,0x24,
+			 EOT}},
+		{0x1, "Parallel port",
+			{0x30,0x60,0x61,0x70,0x71,0x74,0x75,0xf0,0xf8,EOT},
+			{0x00,0x02,0x78,0x07,0x02,0x04,0x04,0xf2,0x07,EOT}},
+		{0x2, "IR",
+			{0x30,0x60,0x61,0x70,0x71,0x74,0x75,0xf0,EOT},
+			{0x00,0x02,0xf8,0x03,0x03,0x04,0x04,0x02,EOT}},
+		{0x3, "COM1",
+			{0x30,0x60,0x61,0x70,0x71,0x74,0x75,0xf0,EOT},
+			{0x00,0x03,0xf8,0x04,0x03,0x04,0x04,0x02,EOT}},
+		{0x4, "System wake-up control (SWC)",
+			{0x30,0x50,0x60,0x61,0x62,0x63,0x70,0x71,0x74,0x75,
+			 EOT},
+			{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x04,0x04,
+			 EOT}},
+		{0x5, "Mouse",
+			{0x30,0x70,0x71,0x74,0x75,EOT},
+			{0x00,0x0c,0x02,0x04,0x04,EOT}},
+		{0x6, "Keyboard",
+			{0x30,0x60,0x61,0x62,0x63,0x70,0x71,0x74,0x75,0xf0,
+			 EOT},
+			{0x00,0x00,0x60,0x00,0x64,0x01,0x02,0x04,0x04,0x40,
+			 EOT}},
+		{0x7, "GPIO",
+			{0x30,0x50,0x60,0x61,0x70,0x71,0x74,0x75,0xf0,0xf1,
+			 0xf2,0xf3,0xf8,EOT},
+			{0x00,0x00,0x00,0x00,0x00,0x03,0x04,0x04,0x00,MISC,
+			 0x00,MISC,0x01,EOT}},
+		{EOT}}},
 	{0xf2, "PC87427", {
 		/* SRID[7..5] is marked as "not applicable for the PC87427". */
 		{NOLDN, NULL,
@@ -512,6 +551,7 @@
 void probe_idregs_nsc(uint16_t port)
 {
 	uint8_t id, rev;
+	int16_t magic;
 
 	probing_for("NSC", "", port);
 
@@ -532,17 +572,28 @@
 		rev = INB(port + 1);
 	}
 
-	if (superio_unknown(reg_table, id)) {
+	/*
+	 * NSC PC8374L has id 0xf1, rev 0b000x xxxx according to datasheet
+	 * Winbond WPCD376I has id 0xf1, rev 0b100x xxxx according to datasheet
+	 */
+	if (id == 0xf1)
+		magic = ((rev & 0xe0) << 4) | id;
+	else
+		magic = id;
+
+	if (superio_unknown(reg_table, magic)) {
 		if (verbose)
 			printf(NOTFOUND "sid=0x%02x, srid=0x%02x\n", id, rev);
 		return;
 	}
 
-	printf("Found NSC %s (sid=0x%02x, srid=0x%02x) at 0x%x\n",
-	       get_superio_name(reg_table, id), id, rev, port);
+	printf("Found %s %s (sid=0x%02x, srid=0x%02x) at 0x%x\n",
+	       magic == 0x8f1 ? "Winbond" : "NSC",
+	       get_superio_name(reg_table, magic), id, rev, port);
 	chip_found = 1;
 
-	dump_superio("NSC", reg_table, port, id, LDN_SEL);
+	dump_superio(magic == 0x8f1 ? "Winbond" : "NSC",
+		     reg_table, port, magic, LDN_SEL);
 }
 
 void print_nsc_chips(void)