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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/gpio.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <dev/extres/hwreset/hwreset.h>
#include <dev/extres/phy/phy_usb.h>
#include <dev/extres/regulator/regulator.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/fdt/simple_mfd.h>
#include "phynode_if.h"
#include "phynode_usb_if.h"
static struct ofw_compat_data compat_data[] = {
{"qcom,usb-hs-ipq4019-phy", 1},
{NULL, 0},
};
struct ipq4018_usb_hs_phy_softc {
device_t dev;
};
struct ipq4018_usb_hs_phynode_sc {
struct phynode_usb_sc usb_sc;
int mode;
hwreset_t por_rst;
hwreset_t srif_rst;
};
static int
ipq4018_usb_hs_phynode_phy_enable(struct phynode *phynode, bool enable)
{
struct ipq4018_usb_hs_phynode_sc *sc;
device_t dev;
int rv;
dev = phynode_get_device(phynode);
sc = phynode_get_softc(phynode);
/*
*
* For power-off - assert por, sleep for 10ms, assert srif,
* sleep for 10ms
*/
rv = hwreset_assert(sc->por_rst);
if (rv != 0)
goto done;
DELAY(10*1000);
rv = hwreset_assert(sc->srif_rst);
if (rv != 0)
goto done;
DELAY(10*1000);
/*
* For power-on - power off first, then deassert srif, then
* sleep for 10ms, then deassert por.
*/
if (enable) {
rv = hwreset_deassert(sc->srif_rst);
if (rv != 0)
goto done;
DELAY(10*1000);
rv = hwreset_deassert(sc->por_rst);
if (rv != 0)
goto done;
DELAY(10*1000);
}
done:
if (rv != 0) {
device_printf(dev, "%s: failed, rv=%d\n", __func__, rv);
}
return (rv);
}
/* Phy controller class and methods. */
static phynode_method_t ipq4018_usb_hs_phynode_methods[] = {
PHYNODEUSBMETHOD(phynode_enable, ipq4018_usb_hs_phynode_phy_enable),
PHYNODEUSBMETHOD_END
};
DEFINE_CLASS_1(ipq4018_usb_hs_phynode, ipq4018_usb_hs_phynode_class,
ipq4018_usb_hs_phynode_methods,
sizeof(struct ipq4018_usb_hs_phynode_sc), phynode_usb_class);
static int
ipq4018_usb_hs_usbphy_init_phy(struct ipq4018_usb_hs_phy_softc *sc,
phandle_t node)
{
struct phynode *phynode;
struct phynode_init_def phy_init;
struct ipq4018_usb_hs_phynode_sc *phy_sc;
int rv;
hwreset_t por_rst = NULL, srif_rst = NULL;
/* FDT resources */
rv = hwreset_get_by_ofw_name(sc->dev, node, "por_rst", &por_rst);
if (rv != 0 && rv != ENOENT) {
device_printf(sc->dev, "Cannot get 'por_rst' reset\n");
goto fail;
}
rv = hwreset_get_by_ofw_name(sc->dev, node, "srif_rst", &srif_rst);
if (rv != 0 && rv != ENOENT) {
device_printf(sc->dev, "Cannot get 'srif_rst' reset\n");
goto fail;
}
/* Create and register phy. */
bzero(&phy_init, sizeof(phy_init));
phy_init.id = 1;
phy_init.ofw_node = node;
phynode = phynode_create(sc->dev, &ipq4018_usb_hs_phynode_class,
&phy_init);
if (phynode == NULL) {
device_printf(sc->dev, "Cannot create phy.\n");
return (ENXIO);
}
phy_sc = phynode_get_softc(phynode);
phy_sc->por_rst = por_rst;
phy_sc->srif_rst = srif_rst;
if (phynode_register(phynode) == NULL) {
device_printf(sc->dev, "Cannot register phy.\n");
return (ENXIO);
}
(void) ipq4018_usb_hs_phynode_phy_enable(phynode, true);
return (0);
fail:
if (por_rst != NULL)
hwreset_release(por_rst);
if (srif_rst != NULL)
hwreset_release(srif_rst);
return (ENXIO);
}
static int
ipq4018_usb_hs_usbphy_probe(device_t dev)
{
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, "IPQ4018/IPQ4019 USB HS PHY");
return (BUS_PROBE_DEFAULT);
}
static int
ipq4018_usb_hs_usbphy_attach(device_t dev)
{
struct ipq4018_usb_hs_phy_softc *sc;
phandle_t node;
int rv;
sc = device_get_softc(dev);
sc->dev = dev;
node = ofw_bus_get_node(sc->dev);
rv = ipq4018_usb_hs_usbphy_init_phy(sc, node);
if (rv != 0)
goto fail;
return (bus_generic_attach(dev));
fail:
return (ENXIO);
}
static int
ipq4018_usb_hs_usbphy_detach(device_t dev)
{
struct ipq4018_usb_hs_phy_softc *sc;
sc = device_get_softc(dev);
return (0);
}
static device_method_t ipq4018_usb_hs_usbphy_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ipq4018_usb_hs_usbphy_probe),
DEVMETHOD(device_attach, ipq4018_usb_hs_usbphy_attach),
DEVMETHOD(device_detach, ipq4018_usb_hs_usbphy_detach),
DEVMETHOD_END
};
static devclass_t ipq4018_usb_hs_usbphy_devclass;
static DEFINE_CLASS_0(ipq4018_usb_hs_usbphy, ipq4018_usb_hs_usbphy_driver,
ipq4018_usb_hs_usbphy_methods,
sizeof(struct ipq4018_usb_hs_phy_softc));
EARLY_DRIVER_MODULE(ipq4018_usb_hs_usbphy, simplebus,
ipq4018_usb_hs_usbphy_driver,
ipq4018_usb_hs_usbphy_devclass, NULL, NULL,
BUS_PASS_TIMER + BUS_PASS_ORDER_LAST);
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