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Make i2c device child auto-probe work for MPC85xx and QorIQ SoCs.

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OFW i2c probing requires a new method ofw_bus_get_node(), and the bus device is
assumed iichb.  With these changes, i2c devices attached in fdt are probed and
attached automagically.
This commit is contained in:
jhibbits 2016-04-05 02:27:01 +00:00
parent e8575f5bc7
commit 3744256f5c
1 changed files with 11 additions and 1 deletions
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12
sys/powerpc/mpc85xx/i2c.c
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@ -97,6 +97,7 @@ static int i2c_stop(device_t dev);
static int i2c_reset(device_t dev, u_char speed, u_char addr, u_char *oldaddr);
static int i2c_read(device_t dev, char *buf, int len, int *read, int last, int delay);
static int i2c_write(device_t dev, const char *buf, int len, int *sent, int timeout);
static phandle_t i2c_get_node(device_t bus, device_t dev);
static device_method_t i2c_methods[] = {
DEVMETHOD(device_probe, i2c_probe),
@ -110,12 +111,13 @@ static device_method_t i2c_methods[] = {
DEVMETHOD(iicbus_read, i2c_read),
DEVMETHOD(iicbus_write, i2c_write),
DEVMETHOD(iicbus_transfer, iicbus_transfer_gen),
DEVMETHOD(ofw_bus_get_node, i2c_get_node),
{ 0, 0 }
};
static driver_t i2c_driver = {
"i2c",
"iichb",
i2c_methods,
sizeof(struct i2c_softc),
};
@ -425,3 +427,11 @@ i2c_write(device_t dev, const char *buf, int len, int *sent, int timeout)
return (IIC_NOERR);
}
static phandle_t
i2c_get_node(device_t bus, device_t dev)
{
/* Share controller node with iibus device. */
return (ofw_bus_get_node(bus));
}