1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
39 #include <dev/syscon/syscon.h>
40 #include <dev/hwreset/hwreset.h>
42 #include <dev/ofw/ofw_bus.h>
43 #include <dev/ofw/ofw_bus_subr.h>
44 #include <dev/ofw/openfirm.h>
50 	device_t		dev;  member
52 	struct syscon		*syscon;  member
58 #define	ERST_LOCK(sc)			mtx_lock(&(sc)->mtx)
59 #define	ERST_UNLOCK(sc)			mtx_unlock(&(sc)->mtx)
60 #define	ERST_ASSERT_LOCKED(sc)		mtx_assert(&(sc)->mtx, MA_OWNED);
61 #define	ERST_ASSERT_UNLOCKED(sc)	mtx_assert(&(sc)->mtx, MA_NOTOWNED);
64     SYSCON_READ_4(sc->syscon, (_reg))
66     SYSCON_WRITE_4(sc->syscon, (_reg), (_val))
69 	{ "eswin,eic7700-reset",	1 },
74 eswin_rst_probe(device_t dev)  in eswin_rst_probe()  argument
77 	if (!ofw_bus_status_okay(dev))  in eswin_rst_probe()
80 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)  in eswin_rst_probe()
83 	device_set_desc(dev, "Eswin Reset");  in eswin_rst_probe()
89 eswin_rst_attach(device_t dev)  in eswin_rst_attach()  argument
94 	sc = device_get_softc(dev);  in eswin_rst_attach()
95 	sc->dev = dev;  in eswin_rst_attach()
97 	error = syscon_get_by_ofw_node(dev, OF_parent(ofw_bus_get_node(dev)),  in eswin_rst_attach()
98 	    &sc->syscon);  in eswin_rst_attach()
100 		device_printf(dev, "Couldn't get syscon handle of parent\n");  in eswin_rst_attach()
104 	mtx_init(&sc->mtx, device_get_nameunit(sc->dev), NULL, MTX_DEF);  in eswin_rst_attach()
106 	hwreset_register_ofw_provider(dev);  in eswin_rst_attach()
112 eswin_rst_reset_assert(device_t dev, intptr_t id, bool reset)  in eswin_rst_reset_assert()  argument
119 	sc = device_get_softc(dev);  in eswin_rst_reset_assert()
137 eswin_rst_reset_is_asserted(device_t dev, intptr_t id, bool *reset)  in eswin_rst_reset_is_asserted()  argument
144 	sc = device_get_softc(dev);  in eswin_rst_reset_is_asserted()