freebsd-nq/sys/dev/extres/phy/phy.c
Michal Meloun dac935533b EXTRES: Add OF node as argument to all <foo>_get_by_ofw_<bar>() functions.
In some cases, the driver must handle given properties located in
specific OF subnode. Instead of creating duplicate set of function, add
'node' as argument to existing functions, defaulting it to device OF node.

MFC after: 3 weeks
2016-07-10 18:28:15 +00:00

239 lines
5.4 KiB
C

/*-
* Copyright 2016 Michal Meloun <mmel@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.
*
* $FreeBSD$
*/
#include "opt_platform.h"
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#ifdef FDT
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#endif
#include <dev/extres/phy/phy.h>
#include "phy_if.h"
struct phy {
device_t consumer_dev; /* consumer device*/
device_t provider_dev; /* provider device*/
uintptr_t phy_id; /* phy id */
};
MALLOC_DEFINE(M_PHY, "phy", "Phy framework");
int
phy_init(device_t consumer, phy_t phy)
{
return (PHY_INIT(phy->provider_dev, phy->phy_id, true));
}
int
phy_deinit(device_t consumer, phy_t phy)
{
return (PHY_INIT(phy->provider_dev, phy->phy_id, false));
}
int
phy_enable(device_t consumer, phy_t phy)
{
return (PHY_ENABLE(phy->provider_dev, phy->phy_id, true));
}
int
phy_disable(device_t consumer, phy_t phy)
{
return (PHY_ENABLE(phy->provider_dev, phy->phy_id, false));
}
int
phy_status(device_t consumer, phy_t phy, int *value)
{
return (PHY_STATUS(phy->provider_dev, phy->phy_id, value));
}
int
phy_get_by_id(device_t consumer_dev, device_t provider_dev, intptr_t id,
phy_t *phy_out)
{
phy_t phy;
/* Create handle */
phy = malloc(sizeof(struct phy), M_PHY,
M_WAITOK | M_ZERO);
phy->consumer_dev = consumer_dev;
phy->provider_dev = provider_dev;
phy->phy_id = id;
*phy_out = phy;
return (0);
}
void
phy_release(phy_t phy)
{
free(phy, M_PHY);
}
#ifdef FDT
int phy_default_map(device_t provider, phandle_t xref, int ncells,
pcell_t *cells, intptr_t *id)
{
if (ncells == 0)
*id = 1;
else if (ncells == 1)
*id = cells[0];
else
return (ERANGE);
return (0);
}
int
phy_get_by_ofw_idx(device_t consumer_dev, phandle_t cnode, int idx, phy_t *phy)
{
phandle_t xnode;
pcell_t *cells;
device_t phydev;
int ncells, rv;
intptr_t id;
if (cnode <= 0)
cnode = ofw_bus_get_node(consumer_dev);
if (cnode <= 0) {
device_printf(consumer_dev,
"%s called on not ofw based device\n", __func__);
return (ENXIO);
}
rv = ofw_bus_parse_xref_list_alloc(cnode, "phys", "#phy-cells", idx,
&xnode, &ncells, &cells);
if (rv != 0)
return (rv);
/* Tranlate provider to device. */
phydev = OF_device_from_xref(xnode);
if (phydev == NULL) {
OF_prop_free(cells);
return (ENODEV);
}
/* Map phy to number. */
rv = PHY_MAP(phydev, xnode, ncells, cells, &id);
OF_prop_free(cells);
if (rv != 0)
return (rv);
return (phy_get_by_id(consumer_dev, phydev, id, phy));
}
int
phy_get_by_ofw_name(device_t consumer_dev, phandle_t cnode, char *name,
phy_t *phy)
{
int rv, idx;
if (cnode <= 0)
cnode = ofw_bus_get_node(consumer_dev);
if (cnode <= 0) {
device_printf(consumer_dev,
"%s called on not ofw based device\n", __func__);
return (ENXIO);
}
rv = ofw_bus_find_string_index(cnode, "phy-names", name, &idx);
if (rv != 0)
return (rv);
return (phy_get_by_ofw_idx(consumer_dev, cnode, idx, phy));
}
int
phy_get_by_ofw_property(device_t consumer_dev, phandle_t cnode, char *name,
phy_t *phy)
{
pcell_t *cells;
device_t phydev;
int ncells, rv;
intptr_t id;
if (cnode <= 0)
cnode = ofw_bus_get_node(consumer_dev);
if (cnode <= 0) {
device_printf(consumer_dev,
"%s called on not ofw based device\n", __func__);
return (ENXIO);
}
ncells = OF_getencprop_alloc(cnode, name, sizeof(pcell_t),
(void **)&cells);
if (ncells < 1)
return (ENXIO);
/* Tranlate provider to device. */
phydev = OF_device_from_xref(cells[0]);
if (phydev == NULL) {
OF_prop_free(cells);
return (ENODEV);
}
/* Map phy to number. */
rv = PHY_MAP(phydev, cells[0], ncells - 1 , cells + 1, &id);
OF_prop_free(cells);
if (rv != 0)
return (rv);
return (phy_get_by_id(consumer_dev, phydev, id, phy));
}
void
phy_register_provider(device_t provider_dev)
{
phandle_t xref, node;
node = ofw_bus_get_node(provider_dev);
if (node <= 0)
panic("%s called on not ofw based device.\n", __func__);
xref = OF_xref_from_node(node);
OF_device_register_xref(xref, provider_dev);
}
void
phy_unregister_provider(device_t provider_dev)
{
phandle_t xref;
xref = OF_xref_from_device(provider_dev);
OF_device_register_xref(xref, NULL);
}
#endif