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/* $OpenBSD: expower.c,v 1.2 2015/05/27 00:06:14 jsg Exp $ */
/*
* Copyright (c) 2012-2013 Patrick Wildt <patrick@blueri.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "fdt.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/device.h>
#include <sys/evcount.h>
#include <sys/socket.h>
#include <sys/timeout.h>
#include <machine/intr.h>
#include <machine/bus.h>
#if NFDT > 0
#include <machine/fdt.h>
#endif
#include <armv7/armv7/armv7var.h>
#include <armv7/exynos/expowervar.h>
/* registers */
#define POWER_PHY_CTRL 0x708
/* bits and bytes */
#define POWER_PHY_CTRL_USB_HOST_EN (1 << 0)
#define HREAD4(sc, reg) \
(bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg)))
#define HWRITE4(sc, reg, val) \
bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val))
#define HSET4(sc, reg, bits) \
HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits))
#define HCLR4(sc, reg, bits) \
HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits))
struct expower_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
};
struct expower_softc *expower_sc;
int expower_match(struct device *parent, void *v, void *aux);
void expower_attach(struct device *parent, struct device *self, void *args);
struct cfattach expower_ca = {
sizeof (struct expower_softc), NULL, expower_attach
};
struct cfattach expower_fdt_ca = {
sizeof (struct expower_softc), expower_match, expower_attach
};
struct cfdriver expower_cd = {
NULL, "expower", DV_DULL
};
int
expower_match(struct device *parent, void *v, void *aux)
{
#if NFDT > 0
struct armv7_attach_args *aa = aux;
if (fdt_node_compatible("samsung,exynos5250-pmu", aa->aa_node))
return 1;
#endif
return 0;
}
void
expower_attach(struct device *parent, struct device *self, void *args)
{
struct armv7_attach_args *aa = args;
struct expower_softc *sc = (struct expower_softc *) self;
struct armv7mem mem;
sc->sc_iot = aa->aa_iot;
#if NFDT > 0
if (aa->aa_node) {
struct fdt_memory fdtmem;
if (fdt_get_memory_address(aa->aa_node, 0, &fdtmem))
panic("%s: could not extract memory data from FDT",
__func__);
mem.addr = fdtmem.addr;
mem.size = fdtmem.size;
} else
#endif
{
mem.addr = aa->aa_dev->mem[0].addr;
mem.size = aa->aa_dev->mem[0].size;
}
if (bus_space_map(sc->sc_iot, mem.addr, mem.size, 0, &sc->sc_ioh))
panic("%s: bus_space_map failed!", __func__);
printf("\n");
expower_sc = sc;
}
void
expower_usbhost_phy_ctrl(int on)
{
struct expower_softc *sc = expower_sc;
if (on)
HSET4(sc, POWER_PHY_CTRL, POWER_PHY_CTRL_USB_HOST_EN);
else
HCLR4(sc, POWER_PHY_CTRL, POWER_PHY_CTRL_USB_HOST_EN);
}
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