diff options
| -rw-r--r-- | sys/dev/i2c/i2c_scan.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/sys/dev/i2c/i2c_scan.c b/sys/dev/i2c/i2c_scan.c index 44b5d0694d6..a50685222c3 100644 --- a/sys/dev/i2c/i2c_scan.c +++ b/sys/dev/i2c/i2c_scan.c @@ -1,4 +1,4 @@ -/* $OpenBSD: i2c_scan.c,v 1.4 2005/12/23 04:09:56 deraadt Exp $ */ +/* $OpenBSD: i2c_scan.c,v 1.5 2005/12/23 07:07:20 deraadt Exp $ */ /* * Copyright (c) 2005 Alexander Yurchenko <grange@openbsd.org> @@ -89,8 +89,8 @@ iic_probe(struct device *self, struct i2cbus_attach_args *iba, u_int8_t addr) if (probeval[P_3e] == 0x41) { /* - * Analog Devices adt/adm product code at 0x3e == 0x41 - * probe newer to older. newer chips have a valid 0x3d + * Analog Devices adt/adm product code at 0x3e == 0x41. + * We probe newer to older. newer chips have a valid 0x3d * product number, while older ones encoded the product * into the upper half of the step at 0x3f */ @@ -125,6 +125,10 @@ iic_probe(struct device *self, struct i2cbus_attach_args *iba, u_int8_t addr) /* * Most newer National products use a vendor code at * 0x3e of 0x01, and then 0x3f contains a product code + * But some older products are missing a product code, + * and contain who knows what in that register. We assume + * that some employee was smart enough to keep the numbers + * unique. */ if (probeval[P_3f] == 0x49) name = "lm99"; @@ -138,8 +142,14 @@ iic_probe(struct device *self, struct i2cbus_attach_args *iba, u_int8_t addr) name = "lm86"; else if (probeval[P_3f] == 0x03) /* and higher? */ name = "lm81"; - } else if (probeval[P_3e] == 0x02 && probeval[P_3f] == 0x6) + } else if (probeval[P_fe] == 0x01) { + /* Some more National devices ...*/ + if (probeval[P_ff] == 0x33) + name = "lm90"; + } else if (probeval[P_3e] == 0x02 && probeval[P_3f] == 0x6) { name = "lm87"; + } else if (probeval[P_fe] == 0x4d && probeval[P_ff] == 0x08) + name = "maxim6690"; /* somewhat similar to lm90 */ printf("addr 0x%x at %s:", addr, self->dv_xname); for (i = 0; i < sizeof(probeval); i++) |