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rx8803: Improve probing logic

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Add a PNP macro in order to load this driver automatically.
While here check if the device is enabled in DT before probing it.

Reviewed by:	wma
Sponsored by:	Alstom
Obtained from:	Semihalf
Differential Revision: https://reviews.freebsd.org/D37579
This commit is contained in:
Kornel Dulęba 2022-12-01 06:41:41 +01:00
parent da35578998
commit 6f9c622690
1 changed files with 13 additions and 1 deletions
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14
sys/dev/iicbus/rtc/rx8803.c
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@ -28,6 +28,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_platform.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
@ -69,6 +71,11 @@ struct rx8803_time {
uint8_t year;
};
static struct ofw_compat_data compat_data[] = {
{"epson,rx8803", 1},
{NULL, 0},
};
static int rx8803_probe(device_t dev);
static int rx8803_attach(device_t dev);
static int rx8803_detach(device_t dev);
@ -191,7 +198,10 @@ static int
rx8803_probe(device_t dev)
{
if (!ofw_bus_is_compatible(dev, "epson,rx8803"))
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
return (ENXIO);
device_set_desc(dev, "Epson RX8803 Real Time Clock");
@ -238,4 +248,6 @@ static driver_t rx8803_driver = {
};
DRIVER_MODULE(rx8803, iicbus, rx8803_driver, NULL, NULL);
MODULE_VERSION(rx8803, 1);
MODULE_DEPEND(rx8803, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER);
IICBUS_FDT_PNP_INFO(compat_data);