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Improve r290373, do a runtime check rather than a compile time switch. I

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learned that the Power8 and the PS3 have a mix of OFW and FDT. Both have AIM
defined. But currently they are not affected. They have no I2C devices under
OFW.

This version was tested on a Quad G5 and build tested for armv6*.

Discussed with	nwhitehorn@
Reviewed by:	ian@
This commit is contained in:
Andreas Tobler 2015-11-08 21:06:51 +00:00
parent b1f3cc2b85
commit ad52ee58e1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=290557
1 changed files with 25 additions and 6 deletions
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31
sys/dev/ofw/ofw_iicbus.c
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@ -101,9 +101,13 @@ ofw_iicbus_attach(device_t dev)
{
struct iicbus_softc *sc = IICBUS_SOFTC(dev);
struct ofw_iicbus_devinfo *dinfo;
phandle_t child, node;
phandle_t child, node, root;
pcell_t freq, paddr;
device_t childdev;
ssize_t compatlen;
char compat[255];
char *curstr;
u_int iic_addr_8bit = 0;
sc->dev = dev;
mtx_init(&sc->lock, "iicbus", NULL, MTX_DEF);
@ -124,6 +128,21 @@ ofw_iicbus_attach(device_t dev)
bus_generic_probe(dev);
bus_enumerate_hinted_children(dev);
/*
* Check if we're running on a PowerMac, needed for the I2C
* address below.
*/
root = OF_peer(0);
compatlen = OF_getprop(root, "compatible", compat,
sizeof(compat));
if (compatlen != -1) {
for (curstr = compat; curstr < compat + compatlen;
curstr += strlen(curstr) + 1) {
if (strncmp(curstr, "MacRISC", 7) == 0)
iic_addr_8bit = 1;
}
}
/*
* Attach those children represented in the device tree.
*/
@ -153,11 +172,11 @@ ofw_iicbus_attach(device_t dev)
* Linux FDT data contains 7-bit values, so shift them up to
* 8-bit format.
*/
#ifdef AIM
dinfo->opd_dinfo.addr = paddr;
#else
dinfo->opd_dinfo.addr = paddr << 1;
#endif
if (iic_addr_8bit)
dinfo->opd_dinfo.addr = paddr;
else
dinfo->opd_dinfo.addr = paddr << 1;
if (ofw_bus_gen_setup_devinfo(&dinfo->opd_obdinfo, child) !=
0) {
free(dinfo, M_DEVBUF);