131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/*-
|
|
* Copyright (c) 2013 Ganbold Tsagaankhuu <ganbold@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/* PMU for Rockchip RK30xx */
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/timeet.h>
|
|
#include <sys/timetc.h>
|
|
#include <sys/watchdog.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include "rk30xx_pmu.h"
|
|
|
|
struct rk30_pmu_softc {
|
|
struct resource *res;
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
};
|
|
|
|
static struct rk30_pmu_softc *rk30_pmu_sc = NULL;
|
|
|
|
#define pmu_read_4(sc, reg) \
|
|
bus_space_read_4((sc)->bst, (sc)->bsh, (reg))
|
|
#define pmu_write_4(sc, reg, val) \
|
|
bus_space_write_4((sc)->bst, (sc)->bsh, (reg), (val))
|
|
|
|
static int
|
|
rk30_pmu_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if (ofw_bus_is_compatible(dev, "rockchip,rk30xx-pmu")) {
|
|
device_set_desc(dev, "RK30XX PMU");
|
|
return(BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
rk30_pmu_attach(device_t dev)
|
|
{
|
|
struct rk30_pmu_softc *sc = device_get_softc(dev);
|
|
int rid = 0;
|
|
|
|
if (rk30_pmu_sc)
|
|
return (ENXIO);
|
|
|
|
sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
|
if (!sc->res) {
|
|
device_printf(dev, "could not allocate resource\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
sc->bst = rman_get_bustag(sc->res);
|
|
sc->bsh = rman_get_bushandle(sc->res);
|
|
|
|
rk30_pmu_sc = sc;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t rk30_pmu_methods[] = {
|
|
DEVMETHOD(device_probe, rk30_pmu_probe),
|
|
DEVMETHOD(device_attach, rk30_pmu_attach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t rk30_pmu_driver = {
|
|
"rk30_pmu",
|
|
rk30_pmu_methods,
|
|
sizeof(struct rk30_pmu_softc),
|
|
};
|
|
|
|
static devclass_t rk30_pmu_devclass;
|
|
|
|
DRIVER_MODULE(rk30_pmu, simplebus, rk30_pmu_driver, rk30_pmu_devclass, 0, 0);
|
|
|
|
void
|
|
rk30_pmu_gpio_pud(uint32_t pin, uint32_t state)
|
|
{
|
|
uint32_t offset;
|
|
|
|
offset = PMU_GPIO0A_PULL + ((pin / 8) * 4);
|
|
pin = (pin % 8) * 2;
|
|
pmu_write_4(rk30_pmu_sc, offset, (0x3 << (16 + pin)) | (state << pin));
|
|
}
|
|
|