diff options
Diffstat (limited to 'sys/dev/i2c')
| -rw-r--r-- | sys/dev/i2c/i2c_scan.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/sys/dev/i2c/i2c_scan.c b/sys/dev/i2c/i2c_scan.c index 064d45b2e9b..a2d7d151b80 100644 --- a/sys/dev/i2c/i2c_scan.c +++ b/sys/dev/i2c/i2c_scan.c @@ -1,4 +1,4 @@ -/* $OpenBSD: i2c_scan.c,v 1.61 2006/01/18 21:53:22 kettenis Exp $ */ +/* $OpenBSD: i2c_scan.c,v 1.62 2006/01/23 23:07:01 kettenis Exp $ */ /* * Copyright (c) 2005 Theo de Raadt <deraadt@openbsd.org> @@ -570,6 +570,25 @@ iic_probe(struct device *self, struct i2cbus_attach_args *iba, u_int8_t addr) if ((iicprobe(0x58) & 0x7f) == 0x31 && (iicprobe(0x4e) & 0xf) == 0x00) name = "asb100"; + } else if ((addr == 0x2c || addr == 0x2d) && iicprobe(0x00) == 0x80 && + (iicprobe(0x01) == 0x00 || iicprobe(0x01) == 0x80) && + iicprobe(0x02) == 0x00 && (iicprobe(0x03) & 0x83) == 0x00 && + (iicprobe(0x0f) & 0x07) == 0x00 && + (iicprobe(0x11) & 0x80) == 0x00 && + (iicprobe(0x12) & 0x80) == 0x00) { + /* + * The GL518SM is really crappy. It has both byte and + * word registers, and reading a word register with a + * byte read command will make the device crap out and + * hang the bus. This has nasty consequences on some + * machines, like preventing warm reboots. The word + * registers are 0x07 through 0x0c, so make sure the + * checks above don't access those registers. We + * don't want to do this check right up front though + * since this chip is somewhat hard to detect (which + * is why we check for every single fixed bit it has). + */ + name = "gl518sm"; } else if (iicprobe(0x16) == 0x41 && ((iicprobe(0x17) & 0xf0) == 0x40) && (addr == 0x2c || addr == 0x2d || addr == 0x2e)) { name = "adm1026"; |