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Remove the existing identify() hack to force-add a spigen device on

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FDT-based systems, and instead add proper FDT probe code.  Because this
driver is freebsd-specific and just provides generic userland access to run
spibus transactions, there is no bindings document to mandate a compatible
string, so just arbitrarily use "freebsd,spigen".
This commit is contained in:
Ian Lepore 2018-04-07 20:04:03 +00:00
parent 14ce4632d4
commit 3b46d8687a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=332219
1 changed files with 16 additions and 15 deletions
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31
sys/dev/spibus/spigen.c
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@ -51,6 +51,10 @@ __FBSDID("$FreeBSD$");
#include <dev/spibus/spi.h>
#ifdef FDT
#include <dev/ofw/ofw_bus_subr.h>
#endif
#include "spibus_if.h"
#define SPIGEN_OPEN (1 << 0)
@ -70,24 +74,24 @@ struct spigen_softc {
int sc_flags;
};
#ifdef FDT
static void
spigen_identify(driver_t *driver, device_t parent)
{
if (device_find_child(parent, "spigen", -1) != NULL)
return;
if (BUS_ADD_CHILD(parent, 0, "spigen", -1) == NULL)
device_printf(parent, "add child failed\n");
}
#endif
static int
spigen_probe(device_t dev)
{
int rv;
#ifdef FDT
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "freebsd,spigen"))
return (ENXIO);
rv = BUS_PROBE_DEFAULT;
#else
rv = BUS_PROBE_NOWILDCARD;
#endif
device_set_desc(dev, "SPI Generic IO");
return (BUS_PROBE_NOWILDCARD);
return (rv);
}
static int spigen_open(struct cdev *, int, int, struct thread *);
@ -439,9 +443,6 @@ static devclass_t spigen_devclass;
static device_method_t spigen_methods[] = {
/* Device interface */
#ifdef FDT
DEVMETHOD(device_identify, spigen_identify),
#endif
DEVMETHOD(device_probe, spigen_probe),
DEVMETHOD(device_attach, spigen_attach),
DEVMETHOD(device_detach, spigen_detach),