Author: ian
Date: Sun Feb 18 02:01:41 2018
New Revision: 329506
URL: https://svnweb.freebsd.org/changeset/base/329506
Log:
Add a detach method so that this can be a kldunload-friendly module.
Modified:
head/sys/arm/freescale/imx/imx_i2c.c
Modified: head/sys/arm/freescale/imx/imx_i2c.c
==============================================================================
--- head/sys/arm/freescale/imx/imx_i2c.c Sun Feb 18 01:42:17 2018
(r329505)
+++ head/sys/arm/freescale/imx/imx_i2c.c Sun Feb 18 02:01:41 2018
(r329506)
@@ -154,6 +154,7 @@ struct i2c_softc {
static phandle_t i2c_get_node(device_t, device_t);
static int i2c_probe(device_t);
static int i2c_attach(device_t);
+static int i2c_detach(device_t);
static int i2c_repeated_start(device_t, u_char, int);
static int i2c_start(device_t, u_char, int);
@@ -165,6 +166,7 @@ static int i2c_write(device_t, const char *, int, int
static device_method_t i2c_methods[] = {
DEVMETHOD(device_probe, i2c_probe),
DEVMETHOD(device_attach, i2c_attach),
+ DEVMETHOD(device_detach, i2c_detach),
/* OFW methods */
DEVMETHOD(ofw_bus_get_node, i2c_get_node),
@@ -445,6 +447,28 @@ no_recovery:
/* Probe and attach the iicbus when interrupts are available. */
config_intrhook_oneshot((ich_func_t)bus_generic_attach, dev);
+ return (0);
+}
+
+static int
+i2c_detach(device_t dev)
+{
+ struct i2c_softc *sc;
+ int error;
+
+ sc = device_get_softc(dev);
+
+ if ((error = bus_generic_detach(sc->dev)) != 0) {
+ device_printf(sc->dev, "cannot detach child devices\n");
+ return (error);
+ }
+
+ if (sc->iicbus != NULL)
+ device_delete_child(dev, sc->iicbus);
+
+ if (sc->res != NULL)
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->res);
+
return (0);
}
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