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The i2c bus number (0 or 1) is encoded in bit 33 of the register for a node,

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but we encode it in bit 8 of i2c_addr_t.  If bit 33 is set, unset it and
set bit 9 instead (we later shift by one bit).
This commit is contained in:
jdc 2013-02-03 17:41:02 +00:00
parent 5fc8d04ede
commit 6be9cf002d
1 changed files with 9 additions and 2 deletions
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11
sys/dev/ofw/ofw_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: ofw_subr.c,v 1.19 2012/11/02 15:44:07 jdc Exp $ */
/* $NetBSD: ofw_subr.c,v 1.20 2013/02/03 17:41:02 jdc Exp $ */
/*
* Copyright 1998
@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ofw_subr.c,v 1.19 2012/11/02 15:44:07 jdc Exp $");
__KERNEL_RCSID(0, "$NetBSD: ofw_subr.c,v 1.20 2013/02/03 17:41:02 jdc Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -353,6 +353,13 @@ of_enter_i2c_devs(prop_dictionary_t props, int ofnode, size_t cell_size)
< sizeof(reg64))
continue;
addr = reg64;
/*
* The i2c bus number (0 or 1) is encoded in bit 33
* of the register, but we encode it in bit 8 of
* i2c_addr_t.
*/
if (addr & 0x100000000)
addr = (addr & 0xff) | 0x100;
} else if (cell_size == 4 && len >= sizeof(reg32)) {
if (OF_getprop(node, "reg", &reg32, sizeof(reg32))
< sizeof(reg32))