Dear Tech,
As you may know I am activating the watchdog function of a chip in my mainboard.
I encouter a little problem as the current is using a undersize 8bit ID.
Meanwhile i read about LM as it is the next logical step.
In <lm_wbsio_match> in lm78_isa.c device are 'probed' again, but the function
received the <struct isa_attach_args> as an argument thus having a way
to identfy the chip (in my case)
Given the comment i really wonder why the ia_aux field is not used here.
Index: dev/ic/lm78var.h
===================================================================
RCS file: /cvs/src/sys/dev/ic/lm78var.h,v
retrieving revision 1.17
diff -u -p -r1.17 lm78var.h
--- dev/ic/lm78var.h 6 Dec 2011 16:06:07 -0000 1.17
+++ dev/ic/lm78var.h 7 Jan 2015 18:56:14 -0000
@@ -97,6 +97,7 @@
/* Vendor IDs */
#define WB_VENDID_WINBOND 0x5ca3 /* Winbond */
+#define WB_VENDID_NUVOTON 0x1414 /* Nuvoton NCT */
#define WB_VENDID_ASUS 0x12c3 /* ASUS */
/* Chip IDs */
Index: dev/isa/lm78_isa.c
===================================================================
RCS file: /cvs/src/sys/dev/isa/lm78_isa.c,v
retrieving revision 1.7
diff -u -p -r1.7 lm78_isa.c
--- dev/isa/lm78_isa.c 6 Dec 2011 16:06:07 -0000 1.7
+++ dev/isa/lm78_isa.c 7 Jan 2015 18:56:14 -0000
@@ -99,8 +99,14 @@ lm_wbsio_match(struct device *parent, vo
bus_space_unmap(iot, ioh, 8);
- if (vendid != WB_VENDID_WINBOND)
+ printf("%s: Probe for Winbond chips %p\n", __func__, ia->ia_aux);
+
+ //WHY not using ia_aux ?
+ if (vendid != WB_VENDID_WINBOND && vendid != WB_VENDID_NUVOTON) {
+ DPRINTF(("%s: WB_VENDID_WINBOND %08X\n", __func__,vendid));
return (0);
+ }
ia->ipa_nio = 1;
ia->ipa_io[0].length = 8;
--
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