diff options
| author |   kettenis <kettenis@openbsd.org> | 2006-03-07 21:27:52 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2006-03-07 21:27:52 +0000 |
| commit | 4ecc40112fd78718c49a79cb507528fb8be9ad0f (patch) | |
| tree | 698d5ae9ce7ac3eac2a1e04e4c104a51e6bbad4d /sys/dev | |
| parent | a few things from bavarian affection w/ beer (diff) | |
| download | wireguard-openbsd-4ecc40112fd78718c49a79cb507528fb8be9ad0f.tar.xz wireguard-openbsd-4ecc40112fd78718c49a79cb507528fb8be9ad0f.zip | |
Improve adm1030/adm1031 detection.
ok deraadt@
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/i2c/i2c_scan.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/sys/dev/i2c/i2c_scan.c b/sys/dev/i2c/i2c_scan.c index 38966dfb223..fe090c3db49 100644 --- a/sys/dev/i2c/i2c_scan.c +++ b/sys/dev/i2c/i2c_scan.c @@ -1,4 +1,4 @@ -/* $OpenBSD: i2c_scan.c,v 1.73 2006/03/04 12:18:58 kettenis Exp $ */ +/* $OpenBSD: i2c_scan.c,v 1.74 2006/03/07 21:27:52 kettenis Exp $ */ /* * Copyright (c) 2005 Theo de Raadt <deraadt@openbsd.org> @@ -357,18 +357,21 @@ iic_probe(struct device *self, struct i2cbus_attach_args *iba, u_int8_t addr) name = "adt7467"; else if (iicprobe(0x3d) == 0x33) name = "adm1033"; - else if ((addr & 0x7c) == 0x2c && /* addr 0b01011xx */ + else if ((addr == 0x2c || addr == 0x2d || addr == 0x2e) && iicprobe(0x3d) == 0x30 && - (iicprobe(0x3f) & 0x70) == 0x00 && - (iicprobe(0x01) & 0x4a) == 0x00 && - (iicprobe(0x03) & 0x3f) == 0x00 && - (iicprobe(0x22) & 0xf0) == 0x00 && + (iicprobe(0x01) & 0x80) == 0x00 && (iicprobe(0x0d) & 0x70) == 0x00 && (iicprobe(0x0e) & 0x70) == 0x00) - name = "adm1030"; /* complete check */ - else if ((addr & 0x7c) == 0x2c && /* addr 0b01011xx */ + /* + * Revision 3 seems to be an adm1031 with + * remote diode 2 shorted. Therefore we + * cannot assume the reserved/unused bits of + * register 0x03 and 0x06 are set to zero. + */ + name = "adm1030"; /* complete check */ + else if ((addr == 0x2c || addr == 0x2d || addr == 0x2e) && iicprobe(0x3d) == 0x31 && - (iicprobe(0x03) & 0x3f) == 0x00 && + (iicprobe(0x01) & 0x80) == 0x00 && (iicprobe(0x0d) & 0x70) == 0x00 && (iicprobe(0x0e) & 0x70) == 0x00 && (iicprobe(0x0f) & 0x70) == 0x00) |