mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-04 23:50:27 +00:00
usb_nop_xceiv: Add support for this pseudo device
This is a "fake" phy that handle regulator, clocks and reset gpio. Only clock and regulator is supported for now. Sponsored-by: Rubicon Communications, LCC ("Netgate")
This commit is contained in:
parent
dbcc200058
commit
aa7c3aa6fa
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=344633
|
@ -234,6 +234,7 @@ dev/usb/controller/generic_ehci.c optional ehci acpi
|
|||
dev/usb/controller/generic_ohci.c optional ohci fdt
|
||||
dev/usb/controller/generic_usb_if.m optional ohci fdt
|
||||
dev/usb/controller/xhci_mv.c optional xhci_mv fdt
|
||||
dev/usb/controller/usb_nop_xceiv.c optional fdt ext_resources
|
||||
dev/vnic/mrml_bridge.c optional vnic fdt
|
||||
dev/vnic/nic_main.c optional vnic pci
|
||||
dev/vnic/nicvf_main.c optional vnic pci pci_iov
|
||||
|
|
211
sys/dev/usb/controller/usb_nop_xceiv.c
Normal file
211
sys/dev/usb/controller/usb_nop_xceiv.c
Normal file
|
@ -0,0 +1,211 @@
|
|||
/*-
|
||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
||||
*
|
||||
* Copyright (c) 2019 Rubicon Communications, LLC (Netgate)
|
||||
*
|
||||
* 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/kernel.h>
|
||||
#include <sys/module.h>
|
||||
#include <sys/rman.h>
|
||||
#include <sys/lock.h>
|
||||
#include <sys/mutex.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/ofw/ofw_bus.h>
|
||||
#include <dev/ofw/ofw_bus_subr.h>
|
||||
|
||||
#include <dev/extres/clk/clk.h>
|
||||
#include <dev/extres/regulator/regulator.h>
|
||||
#include <dev/extres/phy/phy_usb.h>
|
||||
|
||||
#include "phynode_if.h"
|
||||
|
||||
struct usb_nop_xceiv_softc {
|
||||
device_t dev;
|
||||
regulator_t vcc_supply;
|
||||
clk_t clk;
|
||||
uint32_t clk_freq;
|
||||
};
|
||||
|
||||
static struct ofw_compat_data compat_data[] = {
|
||||
{"usb-nop-xceiv", 1},
|
||||
{NULL, 0}
|
||||
};
|
||||
|
||||
/* Phy class and methods. */
|
||||
static int usb_nop_xceiv_phy_enable(struct phynode *phy, bool enable);
|
||||
static phynode_usb_method_t usb_nop_xceiv_phynode_methods[] = {
|
||||
PHYNODEMETHOD(phynode_enable, usb_nop_xceiv_phy_enable),
|
||||
|
||||
PHYNODEMETHOD_END
|
||||
};
|
||||
DEFINE_CLASS_1(usb_nop_xceiv_phynode, usb_nop_xceiv_phynode_class,
|
||||
usb_nop_xceiv_phynode_methods,
|
||||
sizeof(struct phynode_usb_sc), phynode_usb_class);
|
||||
|
||||
static int
|
||||
usb_nop_xceiv_phy_enable(struct phynode *phynode, bool enable)
|
||||
{
|
||||
struct usb_nop_xceiv_softc *sc;
|
||||
device_t dev;
|
||||
intptr_t phy;
|
||||
int error;
|
||||
|
||||
dev = phynode_get_device(phynode);
|
||||
phy = phynode_get_id(phynode);
|
||||
sc = device_get_softc(dev);
|
||||
|
||||
if (phy != 0)
|
||||
return (ERANGE);
|
||||
|
||||
/* Enable the phy clock */
|
||||
if (sc->clk_freq != 0) {
|
||||
if (enable) {
|
||||
error = clk_set_freq(sc->clk, sc->clk_freq,
|
||||
CLK_SET_ROUND_ANY);
|
||||
if (error != 0) {
|
||||
device_printf(dev, "Cannot set clock to %dMhz\n",
|
||||
sc->clk_freq);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
error = clk_enable(sc->clk);
|
||||
} else
|
||||
error = clk_disable(sc->clk);
|
||||
|
||||
if (error != 0) {
|
||||
device_printf(dev, "Cannot %sable the clock\n",
|
||||
enable ? "En" : "Dis");
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (sc->vcc_supply) {
|
||||
if (enable)
|
||||
error = regulator_enable(sc->vcc_supply);
|
||||
else
|
||||
error = regulator_disable(sc->vcc_supply);
|
||||
if (error != 0) {
|
||||
device_printf(dev, "Cannot %sable the regulator\n",
|
||||
enable ? "En" : "Dis");
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
|
||||
return (0);
|
||||
|
||||
fail:
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
static int
|
||||
usb_nop_xceiv_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, "USB NOP PHY");
|
||||
return (BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
static int
|
||||
usb_nop_xceiv_attach(device_t dev)
|
||||
{
|
||||
struct usb_nop_xceiv_softc *sc;
|
||||
struct phynode *phynode;
|
||||
struct phynode_init_def phy_init;
|
||||
phandle_t node;
|
||||
int error;
|
||||
|
||||
sc = device_get_softc(dev);
|
||||
sc->dev = dev;
|
||||
node = ofw_bus_get_node(dev);
|
||||
|
||||
/* Parse the optional properties */
|
||||
OF_getencprop(node, "clock-frequency", &sc->clk_freq, sizeof(uint32_t));
|
||||
|
||||
error = clk_get_by_ofw_name(dev, node, "main_clk", &sc->clk);
|
||||
if (error != 0 && sc->clk_freq != 0) {
|
||||
device_printf(dev, "clock property is mandatory if clock-frequency is present\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
regulator_get_by_ofw_property(dev, node, "vcc-supply", &sc->vcc_supply);
|
||||
|
||||
phy_init.id = 0;
|
||||
phy_init.ofw_node = node;
|
||||
phynode = phynode_create(dev, &usb_nop_xceiv_phynode_class,
|
||||
&phy_init);
|
||||
if (phynode == NULL) {
|
||||
device_printf(dev, "failed to create USB NOP PHY\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
if (phynode_register(phynode) == NULL) {
|
||||
device_printf(dev, "failed to create USB NOP PHY\n");
|
||||
return (ENXIO);
|
||||
}
|
||||
|
||||
OF_device_register_xref(OF_xref_from_node(node), dev);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
usb_nop_xceiv_detach(device_t dev)
|
||||
{
|
||||
|
||||
return (EBUSY);
|
||||
}
|
||||
|
||||
static device_method_t usb_nop_xceiv_methods[] = {
|
||||
/* Device interface */
|
||||
DEVMETHOD(device_probe, usb_nop_xceiv_probe),
|
||||
DEVMETHOD(device_attach, usb_nop_xceiv_attach),
|
||||
DEVMETHOD(device_detach, usb_nop_xceiv_detach),
|
||||
|
||||
DEVMETHOD_END
|
||||
};
|
||||
|
||||
static devclass_t usb_nop_xceiv_devclass;
|
||||
|
||||
static driver_t usb_nop_xceiv_driver = {
|
||||
"usb_nop_xceiv",
|
||||
usb_nop_xceiv_methods,
|
||||
sizeof(struct usb_nop_xceiv_softc),
|
||||
};
|
||||
|
||||
EARLY_DRIVER_MODULE(usb_nop_xceiv, simplebus, usb_nop_xceiv_driver,
|
||||
usb_nop_xceiv_devclass, 0, 0, BUS_PASS_SUPPORTDEV + BUS_PASS_ORDER_MIDDLE);
|
Loading…
Reference in a new issue