[PATCH rtems-libbsd v2 06/14] regulator: Import from FreeBSD.
Christian Mauderer
christian.mauderer at embedded-brains.de
Fri Apr 17 06:17:11 UTC 2020
Hello Jan,
On 16/04/2020 22:27, Jan.Sommer at dlr.de wrote:
> I have a question:
> I just rebased my working tree for the i386 target to the current 5-freebsd-12 branch.
> The compilation now fails in regulator related files.
> It seems that I am missing the FDT define and that comments out some includes.
> Could you tell me what FDT means in this context and do you know where I can activate it?
FDT is a flattened device tree. That's something that isn't used on
i386. So most likely quite some more BSPs will have that problem.
It's some code that I took over quite unchanged from FreeBSD. I would
have expected that it is used in FreeBSD for a lot of different cases
and therefore didn't expect a problem like that. I'll have a look at it.
Best regards
Christian
>
> Cheers,
>
> Jan
>
>> -----Ursprüngliche Nachricht-----
>> Von: devel [mailto:devel-bounces at rtems.org] Im Auftrag von Christian
>> Mauderer
>> Gesendet: Dienstag, 14. April 2020 16:51
>> An: devel at rtems.org
>> Betreff: [PATCH rtems-libbsd v2 06/14] regulator: Import from FreeBSD.
>>
>> Update #3869.
>> ---
>> freebsd/sys/dev/extres/regulator/regulator.c | 1321
>> ++++++++++++++++++++
>> freebsd/sys/dev/extres/regulator/regulator.h | 156 +++
>> freebsd/sys/dev/extres/regulator/regulator_bus.c | 89 ++
>> freebsd/sys/dev/extres/regulator/regulator_fixed.c | 502 ++++++++
>> freebsd/sys/dev/extres/regulator/regulator_fixed.h | 44 +
>> freebsd/sys/dev/gpio/gpioregulator.c | 350 ++++++
>> 6 files changed, 2462 insertions(+)
>> create mode 100644 freebsd/sys/dev/extres/regulator/regulator.c
>> create mode 100644 freebsd/sys/dev/extres/regulator/regulator.h
>> create mode 100644 freebsd/sys/dev/extres/regulator/regulator_bus.c
>> create mode 100644 freebsd/sys/dev/extres/regulator/regulator_fixed.c
>> create mode 100644 freebsd/sys/dev/extres/regulator/regulator_fixed.h
>> create mode 100644 freebsd/sys/dev/gpio/gpioregulator.c
>>
>> diff --git a/freebsd/sys/dev/extres/regulator/regulator.c
>> b/freebsd/sys/dev/extres/regulator/regulator.c
>> new file mode 100644
>> index 00000000..4ad6e94a
>> --- /dev/null
>> +++ b/freebsd/sys/dev/extres/regulator/regulator.c
>> @@ -0,0 +1,1321 @@
>> +#include <machine/rtems-bsd-kernel-space.h>
>> +
>> +/*-
>> + * Copyright 2016 Michal Meloun <mmel at 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.
>> + */
>> +
>> +#include <sys/cdefs.h>
>> +__FBSDID("$FreeBSD$");
>> +
>> +#include <rtems/bsd/local/opt_platform.h>
>> +#include <sys/param.h>
>> +#include <sys/conf.h>
>> +#include <sys/bus.h>
>> +#include <sys/kernel.h>
>> +#include <sys/queue.h>
>> +#include <sys/kobj.h>
>> +#include <sys/malloc.h>
>> +#include <sys/mutex.h>
>> +#include <sys/limits.h>
>> +#include <sys/lock.h>
>> +#include <sys/sysctl.h>
>> +#include <sys/systm.h>
>> +#include <sys/sx.h>
>> +
>> +#ifdef FDT
>> +#include <dev/fdt/fdt_common.h>
>> +#include <dev/ofw/ofw_bus.h>
>> +#include <dev/ofw/ofw_bus_subr.h>
>> +#endif
>> +#include <dev/extres/regulator/regulator.h>
>> +
>> +#include <rtems/bsd/local/regdev_if.h>
>> +
>> +SYSCTL_NODE(_hw, OID_AUTO, regulator, CTLFLAG_RD, NULL,
>> "Regulators");
>> +
>> +MALLOC_DEFINE(M_REGULATOR, "regulator", "Regulator framework");
>> +
>> +#define DIV_ROUND_UP(n,d) howmany(n, d)
>> +
>> +/* Forward declarations. */
>> +struct regulator;
>> +struct regnode;
>> +
>> +typedef TAILQ_HEAD(regnode_list, regnode) regnode_list_t;
>> +typedef TAILQ_HEAD(regulator_list, regulator) regulator_list_t;
>> +
>> +/* Default regulator methods. */
>> +static int regnode_method_init(struct regnode *regnode);
>> +static int regnode_method_enable(struct regnode *regnode, bool enable,
>> + int *udelay);
>> +static int regnode_method_status(struct regnode *regnode, int *status);
>> +static int regnode_method_set_voltage(struct regnode *regnode, int
>> min_uvolt,
>> + int max_uvolt, int *udelay);
>> +static int regnode_method_get_voltage(struct regnode *regnode, int
>> *uvolt);
>> +static void regulator_constraint(void *dummy);
>> +static void regulator_shutdown(void *dummy);
>> +
>> +/*
>> + * Regulator controller methods.
>> + */
>> +static regnode_method_t regnode_methods[] = {
>> + REGNODEMETHOD(regnode_init,
>> regnode_method_init),
>> + REGNODEMETHOD(regnode_enable,
>> regnode_method_enable),
>> + REGNODEMETHOD(regnode_status,
>> regnode_method_status),
>> + REGNODEMETHOD(regnode_set_voltage,
>> regnode_method_set_voltage),
>> + REGNODEMETHOD(regnode_get_voltage,
>> regnode_method_get_voltage),
>> + REGNODEMETHOD(regnode_check_voltage,
>> regnode_method_check_voltage),
>> +
>> + REGNODEMETHOD_END
>> +};
>> +DEFINE_CLASS_0(regnode, regnode_class, regnode_methods, 0);
>> +
>> +/*
>> + * Regulator node - basic element for modelling SOC and bard power supply
>> + * chains. Its contains producer data.
>> + */
>> +struct regnode {
>> + KOBJ_FIELDS;
>> +
>> + TAILQ_ENTRY(regnode) reglist_link; /* Global list entry */
>> + regulator_list_t consumers_list; /* Consumers list */
>> +
>> + /* Cache for already resolved names */
>> + struct regnode *parent; /* Resolved parent */
>> +
>> + /* Details of this device. */
>> + const char *name; /* Globally unique
>> name */
>> + const char *parent_name; /* Parent name */
>> +
>> + device_t pdev; /* Producer device_t */
>> + void *softc; /* Producer softc */
>> + intptr_t id; /* Per producer unique id */
>> +#ifdef FDT
>> + phandle_t ofw_node; /* OFW node of regulator */
>> +#endif
>> + int flags; /* REGULATOR_FLAGS_ */
>> + struct sx lock; /* Lock for this regulator */
>> + int ref_cnt; /* Reference counter */
>> + int enable_cnt; /* Enabled counter */
>> +
>> + struct regnode_std_param std_param; /* Standard
>> parameters */
>> +
>> + struct sysctl_ctx_list sysctl_ctx;
>> +};
>> +
>> +/*
>> + * Per consumer data, information about how a consumer is using a
>> regulator
>> + * node.
>> + * A pointer to this structure is used as a handle in the consumer interface.
>> + */
>> +struct regulator {
>> + device_t cdev; /* Consumer device */
>> + struct regnode *regnode;
>> + TAILQ_ENTRY(regulator) link; /* Consumers list
>> entry */
>> +
>> + int enable_cnt;
>> + int min_uvolt; /* Requested uvolt range */
>> + int max_uvolt;
>> +};
>> +
>> +/*
>> + * Regulator names must be system wide unique.
>> + */
>> +static regnode_list_t regnode_list =
>> TAILQ_HEAD_INITIALIZER(regnode_list);
>> +
>> +static struct sx regnode_topo_lock;
>> +SX_SYSINIT(regulator_topology, ®node_topo_lock, "Regulator topology
>> lock");
>> +
>> +#define REG_TOPO_SLOCK() sx_slock(®node_topo_lock)
>> +#define REG_TOPO_XLOCK() sx_xlock(®node_topo_lock)
>> +#define REG_TOPO_UNLOCK() sx_unlock(®node_topo_lock)
>> +#define REG_TOPO_ASSERT() sx_assert(®node_topo_lock,
>> SA_LOCKED)
>> +#define REG_TOPO_XASSERT() sx_assert(®node_topo_lock,
>> SA_XLOCKED)
>> +
>> +#define REGNODE_SLOCK(_sc) sx_slock(&((_sc)->lock))
>> +#define REGNODE_XLOCK(_sc) sx_xlock(&((_sc)->lock))
>> +#define REGNODE_UNLOCK(_sc) sx_unlock(&((_sc)->lock))
>> +
>> +SYSINIT(regulator_constraint, SI_SUB_LAST, SI_ORDER_ANY,
>> regulator_constraint,
>> + NULL);
>> +SYSINIT(regulator_shutdown, SI_SUB_LAST, SI_ORDER_ANY,
>> regulator_shutdown,
>> + NULL);
>> +
>> +static void
>> +regulator_constraint(void *dummy)
>> +{
>> + struct regnode *entry;
>> + int rv;
>> +
>> + REG_TOPO_SLOCK();
>> + TAILQ_FOREACH(entry, ®node_list, reglist_link) {
>> + rv = regnode_set_constraint(entry);
>> + if (rv != 0 && bootverbose)
>> + printf("regulator: setting constraint on %s failed
>> (%d)\n",
>> + entry->name, rv);
>> + }
>> + REG_TOPO_UNLOCK();
>> +}
>> +
>> +/*
>> + * Disable unused regulator
>> + * We run this function at SI_SUB_LAST which mean that every driver that
>> needs
>> + * regulator should have already enable them.
>> + * All the remaining regulators should be those left enabled by the
>> bootloader
>> + * or enable by default by the PMIC.
>> + */
>> +static void
>> +regulator_shutdown(void *dummy)
>> +{
>> + struct regnode *entry;
>> + int status, ret;
>> + int disable = 1;
>> +
>> + TUNABLE_INT_FETCH("hw.regulator.disable_unused", &disable);
>> + if (!disable)
>> + return;
>> + REG_TOPO_SLOCK();
>> +
>> + if (bootverbose)
>> + printf("regulator: shutting down unused regulators\n");
>> + TAILQ_FOREACH(entry, ®node_list, reglist_link) {
>> + if (!entry->std_param.always_on) {
>> + ret = regnode_status(entry, &status);
>> + if (ret == 0 && status ==
>> REGULATOR_STATUS_ENABLED) {
>> + if (bootverbose)
>> + printf("regulator: shutting down %s...
>> ",
>> + entry->name);
>> + ret = regnode_stop(entry, 0);
>> + if (bootverbose) {
>> + /*
>> + * Call out busy in particular, here,
>> + * because it's not unexpected to fail
>> + * shutdown if the regulator is simply
>> + * in-use.
>> + */
>> + if (ret == EBUSY)
>> + printf("busy\n");
>> + else if (ret != 0)
>> + printf("error (%d)\n", ret);
>> + else
>> + printf("ok\n");
>> + }
>> + }
>> + }
>> + }
>> + REG_TOPO_UNLOCK();
>> +}
>> +
>> +/*
>> + * sysctl handler
>> + */
>> +static int
>> +regnode_uvolt_sysctl(SYSCTL_HANDLER_ARGS)
>> +{
>> + struct regnode *regnode = arg1;
>> + int rv, uvolt;
>> +
>> + if (regnode->std_param.min_uvolt == regnode-
>>> std_param.max_uvolt) {
>> + uvolt = regnode->std_param.min_uvolt;
>> + } else {
>> + REG_TOPO_SLOCK();
>> + if ((rv = regnode_get_voltage(regnode, &uvolt)) != 0) {
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> + }
>> + REG_TOPO_UNLOCK();
>> + }
>> +
>> + return sysctl_handle_int(oidp, &uvolt, sizeof(uvolt), req);
>> +}
>> +
>> +/* ----------------------------------------------------------------------------
>> + *
>> + * Default regulator methods for base class.
>> + *
>> + */
>> +static int
>> +regnode_method_init(struct regnode *regnode)
>> +{
>> +
>> + return (0);
>> +}
>> +
>> +static int
>> +regnode_method_enable(struct regnode *regnode, bool enable, int
>> *udelay)
>> +{
>> +
>> + if (!enable)
>> + return (ENXIO);
>> +
>> + *udelay = 0;
>> + return (0);
>> +}
>> +
>> +static int
>> +regnode_method_status(struct regnode *regnode, int *status)
>> +{
>> + *status = REGULATOR_STATUS_ENABLED;
>> + return (0);
>> +}
>> +
>> +static int
>> +regnode_method_set_voltage(struct regnode *regnode, int min_uvolt, int
>> max_uvolt,
>> + int *udelay)
>> +{
>> +
>> + if ((min_uvolt > regnode->std_param.max_uvolt) ||
>> + (max_uvolt < regnode->std_param.min_uvolt))
>> + return (ERANGE);
>> + *udelay = 0;
>> + return (0);
>> +}
>> +
>> +static int
>> +regnode_method_get_voltage(struct regnode *regnode, int *uvolt)
>> +{
>> +
>> + return (regnode->std_param.min_uvolt +
>> + (regnode->std_param.max_uvolt - regnode-
>>> std_param.min_uvolt) / 2);
>> +}
>> +
>> +int
>> +regnode_method_check_voltage(struct regnode *regnode, int uvolt)
>> +{
>> +
>> + if ((uvolt > regnode->std_param.max_uvolt) ||
>> + (uvolt < regnode->std_param.min_uvolt))
>> + return (ERANGE);
>> + return (0);
>> +}
>> +
>> +/* ----------------------------------------------------------------------------
>> + *
>> + * Internal functions.
>> + *
>> + */
>> +
>> +static struct regnode *
>> +regnode_find_by_name(const char *name)
>> +{
>> + struct regnode *entry;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + TAILQ_FOREACH(entry, ®node_list, reglist_link) {
>> + if (strcmp(entry->name, name) == 0)
>> + return (entry);
>> + }
>> + return (NULL);
>> +}
>> +
>> +static struct regnode *
>> +regnode_find_by_id(device_t dev, intptr_t id)
>> +{
>> + struct regnode *entry;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + TAILQ_FOREACH(entry, ®node_list, reglist_link) {
>> + if ((entry->pdev == dev) && (entry->id == id))
>> + return (entry);
>> + }
>> +
>> + return (NULL);
>> +}
>> +
>> +/*
>> + * Create and initialize regulator object, but do not register it.
>> + */
>> +struct regnode *
>> +regnode_create(device_t pdev, regnode_class_t regnode_class,
>> + struct regnode_init_def *def)
>> +{
>> + struct regnode *regnode;
>> + struct sysctl_oid *regnode_oid;
>> +
>> + KASSERT(def->name != NULL, ("regulator name is NULL"));
>> + KASSERT(def->name[0] != '\0', ("regulator name is empty"));
>> +
>> + REG_TOPO_SLOCK();
>> + if (regnode_find_by_name(def->name) != NULL)
>> + panic("Duplicated regulator registration: %s\n", def->name);
>> + REG_TOPO_UNLOCK();
>> +
>> + /* Create object and initialize it. */
>> + regnode = malloc(sizeof(struct regnode), M_REGULATOR,
>> + M_WAITOK | M_ZERO);
>> + kobj_init((kobj_t)regnode, (kobj_class_t)regnode_class);
>> + sx_init(®node->lock, "Regulator node lock");
>> +
>> + /* Allocate softc if required. */
>> + if (regnode_class->size > 0) {
>> + regnode->softc = malloc(regnode_class->size,
>> M_REGULATOR,
>> + M_WAITOK | M_ZERO);
>> + }
>> +
>> +
>> + /* Copy all strings unless they're flagged as static. */
>> + if (def->flags & REGULATOR_FLAGS_STATIC) {
>> + regnode->name = def->name;
>> + regnode->parent_name = def->parent_name;
>> + } else {
>> + regnode->name = strdup(def->name, M_REGULATOR);
>> + if (def->parent_name != NULL)
>> + regnode->parent_name = strdup(def-
>>> parent_name,
>> + M_REGULATOR);
>> + }
>> +
>> + /* Rest of init. */
>> + TAILQ_INIT(®node->consumers_list);
>> + regnode->id = def->id;
>> + regnode->pdev = pdev;
>> + regnode->flags = def->flags;
>> + regnode->parent = NULL;
>> + regnode->std_param = def->std_param;
>> +#ifdef FDT
>> + regnode->ofw_node = def->ofw_node;
>> +#endif
>> +
>> + sysctl_ctx_init(®node->sysctl_ctx);
>> + regnode_oid = SYSCTL_ADD_NODE(®node->sysctl_ctx,
>> + SYSCTL_STATIC_CHILDREN(_hw_regulator),
>> + OID_AUTO, regnode->name,
>> + CTLFLAG_RD, 0, "A regulator node");
>> +
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "min_uvolt",
>> + CTLFLAG_RD, ®node->std_param.min_uvolt, 0,
>> + "Minimal voltage (in uV)");
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "max_uvolt",
>> + CTLFLAG_RD, ®node->std_param.max_uvolt, 0,
>> + "Maximal voltage (in uV)");
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "min_uamp",
>> + CTLFLAG_RD, ®node->std_param.min_uamp, 0,
>> + "Minimal amperage (in uA)");
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "max_uamp",
>> + CTLFLAG_RD, ®node->std_param.max_uamp, 0,
>> + "Maximal amperage (in uA)");
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "ramp_delay",
>> + CTLFLAG_RD, ®node->std_param.ramp_delay, 0,
>> + "Ramp delay (in uV/us)");
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "enable_delay",
>> + CTLFLAG_RD, ®node->std_param.enable_delay, 0,
>> + "Enable delay (in us)");
>> + SYSCTL_ADD_INT(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "enable_cnt",
>> + CTLFLAG_RD, ®node->enable_cnt, 0,
>> + "The regulator enable counter");
>> + SYSCTL_ADD_U8(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "boot_on",
>> + CTLFLAG_RD, (uint8_t *) ®node->std_param.boot_on, 0,
>> + "Is enabled on boot");
>> + SYSCTL_ADD_U8(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "always_on",
>> + CTLFLAG_RD, (uint8_t *)®node->std_param.always_on, 0,
>> + "Is always enabled");
>> +
>> + SYSCTL_ADD_PROC(®node->sysctl_ctx,
>> + SYSCTL_CHILDREN(regnode_oid),
>> + OID_AUTO, "uvolt",
>> + CTLTYPE_INT | CTLFLAG_RD,
>> + regnode, 0, regnode_uvolt_sysctl,
>> + "I",
>> + "Current voltage (in uV)");
>> +
>> + return (regnode);
>> +}
>> +
>> +/* Register regulator object. */
>> +struct regnode *
>> +regnode_register(struct regnode *regnode)
>> +{
>> + int rv;
>> +
>> +#ifdef FDT
>> + if (regnode->ofw_node <= 0)
>> + regnode->ofw_node = ofw_bus_get_node(regnode->pdev);
>> + if (regnode->ofw_node <= 0)
>> + return (NULL);
>> +#endif
>> +
>> + rv = REGNODE_INIT(regnode);
>> + if (rv != 0) {
>> + printf("REGNODE_INIT failed: %d\n", rv);
>> + return (NULL);
>> + }
>> +
>> + REG_TOPO_XLOCK();
>> + TAILQ_INSERT_TAIL(®node_list, regnode, reglist_link);
>> + REG_TOPO_UNLOCK();
>> +#ifdef FDT
>> + OF_device_register_xref(OF_xref_from_node(regnode-
>>> ofw_node),
>> + regnode->pdev);
>> +#endif
>> + return (regnode);
>> +}
>> +
>> +static int
>> +regnode_resolve_parent(struct regnode *regnode)
>> +{
>> +
>> + /* All ready resolved or no parent? */
>> + if ((regnode->parent != NULL) ||
>> + (regnode->parent_name == NULL))
>> + return (0);
>> +
>> + regnode->parent = regnode_find_by_name(regnode-
>>> parent_name);
>> + if (regnode->parent == NULL)
>> + return (ENODEV);
>> + return (0);
>> +}
>> +
>> +static void
>> +regnode_delay(int usec)
>> +{
>> + int ticks;
>> +
>> + if (usec == 0)
>> + return;
>> + ticks = (usec * hz + 999999) / 1000000;
>> +
>> + if (cold || ticks < 2)
>> + DELAY(usec);
>> + else
>> + pause("REGULATOR", ticks);
>> +}
>> +
>> +/* --------------------------------------------------------------------------
>> + *
>> + * Regulator providers interface
>> + *
>> + */
>> +
>> +const char *
>> +regnode_get_name(struct regnode *regnode)
>> +{
>> +
>> + return (regnode->name);
>> +}
>> +
>> +const char *
>> +regnode_get_parent_name(struct regnode *regnode)
>> +{
>> +
>> + return (regnode->parent_name);
>> +}
>> +
>> +int
>> +regnode_get_flags(struct regnode *regnode)
>> +{
>> +
>> + return (regnode->flags);
>> +}
>> +
>> +void *
>> +regnode_get_softc(struct regnode *regnode)
>> +{
>> +
>> + return (regnode->softc);
>> +}
>> +
>> +device_t
>> +regnode_get_device(struct regnode *regnode)
>> +{
>> +
>> + return (regnode->pdev);
>> +}
>> +
>> +struct regnode_std_param *regnode_get_stdparam(struct regnode
>> *regnode)
>> +{
>> +
>> + return (®node->std_param);
>> +}
>> +
>> +void regnode_topo_unlock(void)
>> +{
>> +
>> + REG_TOPO_UNLOCK();
>> +}
>> +
>> +void regnode_topo_xlock(void)
>> +{
>> +
>> + REG_TOPO_XLOCK();
>> +}
>> +
>> +void regnode_topo_slock(void)
>> +{
>> +
>> + REG_TOPO_SLOCK();
>> +}
>> +
>> +
>> +/* --------------------------------------------------------------------------
>> + *
>> + * Real consumers executive
>> + *
>> + */
>> +struct regnode *
>> +regnode_get_parent(struct regnode *regnode)
>> +{
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + rv = regnode_resolve_parent(regnode);
>> + if (rv != 0)
>> + return (NULL);
>> +
>> + return (regnode->parent);
>> +}
>> +
>> +/*
>> + * Enable regulator.
>> + */
>> +int
>> +regnode_enable(struct regnode *regnode)
>> +{
>> + int udelay;
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + /* Enable regulator for each node in chain, starting from source. */
>> + rv = regnode_resolve_parent(regnode);
>> + if (rv != 0)
>> + return (rv);
>> + if (regnode->parent != NULL) {
>> + rv = regnode_enable(regnode->parent);
>> + if (rv != 0)
>> + return (rv);
>> + }
>> +
>> + /* Handle this node. */
>> + REGNODE_XLOCK(regnode);
>> + if (regnode->enable_cnt == 0) {
>> + rv = REGNODE_ENABLE(regnode, true, &udelay);
>> + if (rv != 0) {
>> + REGNODE_UNLOCK(regnode);
>> + return (rv);
>> + }
>> + regnode_delay(udelay);
>> + }
>> + regnode->enable_cnt++;
>> + REGNODE_UNLOCK(regnode);
>> + return (0);
>> +}
>> +
>> +/*
>> + * Disable regulator.
>> + */
>> +int
>> +regnode_disable(struct regnode *regnode)
>> +{
>> + int udelay;
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> + rv = 0;
>> +
>> + REGNODE_XLOCK(regnode);
>> + /* Disable regulator for each node in chain, starting from consumer.
>> */
>> + if (regnode->enable_cnt == 1 &&
>> + (regnode->flags & REGULATOR_FLAGS_NOT_DISABLE) == 0 &&
>> + !regnode->std_param.always_on) {
>> + rv = REGNODE_ENABLE(regnode, false, &udelay);
>> + if (rv != 0) {
>> + REGNODE_UNLOCK(regnode);
>> + return (rv);
>> + }
>> + regnode_delay(udelay);
>> + }
>> + regnode->enable_cnt--;
>> + REGNODE_UNLOCK(regnode);
>> +
>> + rv = regnode_resolve_parent(regnode);
>> + if (rv != 0)
>> + return (rv);
>> + if (regnode->parent != NULL)
>> + rv = regnode_disable(regnode->parent);
>> + return (rv);
>> +}
>> +
>> +/*
>> + * Stop regulator.
>> + */
>> +int
>> +regnode_stop(struct regnode *regnode, int depth)
>> +{
>> + int udelay;
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> + rv = 0;
>> +
>> + REGNODE_XLOCK(regnode);
>> + /* The first node must not be enabled. */
>> + if ((regnode->enable_cnt != 0) && (depth == 0)) {
>> + REGNODE_UNLOCK(regnode);
>> + return (EBUSY);
>> + }
>> + /* Disable regulator for each node in chain, starting from consumer
>> */
>> + if ((regnode->enable_cnt == 0) &&
>> + ((regnode->flags & REGULATOR_FLAGS_NOT_DISABLE) == 0)) {
>> + rv = REGNODE_STOP(regnode, &udelay);
>> + if (rv != 0) {
>> + REGNODE_UNLOCK(regnode);
>> + return (rv);
>> + }
>> + regnode_delay(udelay);
>> + }
>> + REGNODE_UNLOCK(regnode);
>> +
>> + rv = regnode_resolve_parent(regnode);
>> + if (rv != 0)
>> + return (rv);
>> + if (regnode->parent != NULL && regnode->parent->enable_cnt == 0)
>> + rv = regnode_stop(regnode->parent, depth + 1);
>> + return (rv);
>> +}
>> +
>> +/*
>> + * Get regulator status. (REGULATOR_STATUS_*)
>> + */
>> +int
>> +regnode_status(struct regnode *regnode, int *status)
>> +{
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + REGNODE_XLOCK(regnode);
>> + rv = REGNODE_STATUS(regnode, status);
>> + REGNODE_UNLOCK(regnode);
>> + return (rv);
>> +}
>> +
>> +/*
>> + * Get actual regulator voltage.
>> + */
>> +int
>> +regnode_get_voltage(struct regnode *regnode, int *uvolt)
>> +{
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + REGNODE_XLOCK(regnode);
>> + rv = REGNODE_GET_VOLTAGE(regnode, uvolt);
>> + REGNODE_UNLOCK(regnode);
>> +
>> + /* Pass call into parent, if regulator is in bypass mode. */
>> + if (rv == ENOENT) {
>> + rv = regnode_resolve_parent(regnode);
>> + if (rv != 0)
>> + return (rv);
>> + if (regnode->parent != NULL)
>> + rv = regnode_get_voltage(regnode->parent, uvolt);
>> +
>> + }
>> + return (rv);
>> +}
>> +
>> +/*
>> + * Set regulator voltage.
>> + */
>> +int
>> +regnode_set_voltage(struct regnode *regnode, int min_uvolt, int
>> max_uvolt)
>> +{
>> + int udelay;
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + REGNODE_XLOCK(regnode);
>> +
>> + rv = REGNODE_SET_VOLTAGE(regnode, min_uvolt, max_uvolt,
>> &udelay);
>> + if (rv == 0)
>> + regnode_delay(udelay);
>> + REGNODE_UNLOCK(regnode);
>> + return (rv);
>> +}
>> +
>> +/*
>> + * Consumer variant of regnode_set_voltage().
>> + */
>> +static int
>> +regnode_set_voltage_checked(struct regnode *regnode, struct regulator
>> *reg,
>> + int min_uvolt, int max_uvolt)
>> +{
>> + int udelay;
>> + int all_max_uvolt;
>> + int all_min_uvolt;
>> + struct regulator *tmp;
>> + int rv;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + REGNODE_XLOCK(regnode);
>> + /* Return error if requested range is outside of regulator range. */
>> + if ((min_uvolt > regnode->std_param.max_uvolt) ||
>> + (max_uvolt < regnode->std_param.min_uvolt)) {
>> + REGNODE_UNLOCK(regnode);
>> + return (ERANGE);
>> + }
>> +
>> + /* Get actual voltage range for all consumers. */
>> + all_min_uvolt = regnode->std_param.min_uvolt;
>> + all_max_uvolt = regnode->std_param.max_uvolt;
>> + TAILQ_FOREACH(tmp, ®node->consumers_list, link) {
>> + /* Don't take requestor in account. */
>> + if (tmp == reg)
>> + continue;
>> + if (all_min_uvolt < tmp->min_uvolt)
>> + all_min_uvolt = tmp->min_uvolt;
>> + if (all_max_uvolt > tmp->max_uvolt)
>> + all_max_uvolt = tmp->max_uvolt;
>> + }
>> +
>> + /* Test if request fits to actual contract. */
>> + if ((min_uvolt > all_max_uvolt) ||
>> + (max_uvolt < all_min_uvolt)) {
>> + REGNODE_UNLOCK(regnode);
>> + return (ERANGE);
>> + }
>> +
>> + /* Adjust new range.*/
>> + if (min_uvolt < all_min_uvolt)
>> + min_uvolt = all_min_uvolt;
>> + if (max_uvolt > all_max_uvolt)
>> + max_uvolt = all_max_uvolt;
>> +
>> + rv = REGNODE_SET_VOLTAGE(regnode, min_uvolt, max_uvolt,
>> &udelay);
>> + regnode_delay(udelay);
>> + REGNODE_UNLOCK(regnode);
>> + return (rv);
>> +}
>> +
>> +int
>> +regnode_set_constraint(struct regnode *regnode)
>> +{
>> + int status, rv, uvolt;
>> +
>> + if (regnode->std_param.boot_on != true &&
>> + regnode->std_param.always_on != true)
>> + return (0);
>> +
>> + rv = regnode_status(regnode, &status);
>> + if (rv != 0) {
>> + if (bootverbose)
>> + printf("Cannot get regulator status for %s\n",
>> + regnode_get_name(regnode));
>> + return (rv);
>> + }
>> +
>> + if (status == REGULATOR_STATUS_ENABLED)
>> + return (0);
>> +
>> + rv = regnode_get_voltage(regnode, &uvolt);
>> + if (rv != 0) {
>> + if (bootverbose)
>> + printf("Cannot get regulator voltage for %s\n",
>> + regnode_get_name(regnode));
>> + return (rv);
>> + }
>> +
>> + if (uvolt < regnode->std_param.min_uvolt ||
>> + uvolt > regnode->std_param.max_uvolt) {
>> + if (bootverbose)
>> + printf("Regulator %s current voltage %d is not in the"
>> + " acceptable range : %d<->%d\n",
>> + regnode_get_name(regnode),
>> + uvolt, regnode->std_param.min_uvolt,
>> + regnode->std_param.max_uvolt);
>> + return (ERANGE);
>> + }
>> +
>> + rv = regnode_enable(regnode);
>> + if (rv != 0) {
>> + if (bootverbose)
>> + printf("Cannot enable regulator %s\n",
>> + regnode_get_name(regnode));
>> + return (rv);
>> + }
>> +
>> + return (0);
>> +}
>> +
>> +#ifdef FDT
>> +phandle_t
>> +regnode_get_ofw_node(struct regnode *regnode)
>> +{
>> +
>> + return (regnode->ofw_node);
>> +}
>> +#endif
>> +
>> +/* --------------------------------------------------------------------------
>> + *
>> + * Regulator consumers interface.
>> + *
>> + */
>> +/* Helper function for regulator_get*() */
>> +static regulator_t
>> +regulator_create(struct regnode *regnode, device_t cdev)
>> +{
>> + struct regulator *reg;
>> +
>> + REG_TOPO_ASSERT();
>> +
>> + reg = malloc(sizeof(struct regulator), M_REGULATOR,
>> + M_WAITOK | M_ZERO);
>> + reg->cdev = cdev;
>> + reg->regnode = regnode;
>> + reg->enable_cnt = 0;
>> +
>> + REGNODE_XLOCK(regnode);
>> + regnode->ref_cnt++;
>> + TAILQ_INSERT_TAIL(®node->consumers_list, reg, link);
>> + reg ->min_uvolt = regnode->std_param.min_uvolt;
>> + reg ->max_uvolt = regnode->std_param.max_uvolt;
>> + REGNODE_UNLOCK(regnode);
>> +
>> + return (reg);
>> +}
>> +
>> +int
>> +regulator_enable(regulator_t reg)
>> +{
>> + int rv;
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> + REG_TOPO_SLOCK();
>> + rv = regnode_enable(regnode);
>> + if (rv == 0)
>> + reg->enable_cnt++;
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +int
>> +regulator_disable(regulator_t reg)
>> +{
>> + int rv;
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> + KASSERT(reg->enable_cnt > 0,
>> + ("Attempt to disable already disabled regulator: %s\n",
>> + regnode->name));
>> + REG_TOPO_SLOCK();
>> + rv = regnode_disable(regnode);
>> + if (rv == 0)
>> + reg->enable_cnt--;
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +int
>> +regulator_stop(regulator_t reg)
>> +{
>> + int rv;
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> + KASSERT(reg->enable_cnt == 0,
>> + ("Attempt to stop already enabled regulator: %s\n", regnode-
>>> name));
>> +
>> + REG_TOPO_SLOCK();
>> + rv = regnode_stop(regnode, 0);
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +int
>> +regulator_status(regulator_t reg, int *status)
>> +{
>> + int rv;
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> +
>> + REG_TOPO_SLOCK();
>> + rv = regnode_status(regnode, status);
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +int
>> +regulator_get_voltage(regulator_t reg, int *uvolt)
>> +{
>> + int rv;
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> +
>> + REG_TOPO_SLOCK();
>> + rv = regnode_get_voltage(regnode, uvolt);
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +int
>> +regulator_set_voltage(regulator_t reg, int min_uvolt, int max_uvolt)
>> +{
>> + struct regnode *regnode;
>> + int rv;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> +
>> + REG_TOPO_SLOCK();
>> +
>> + rv = regnode_set_voltage_checked(regnode, reg, min_uvolt,
>> max_uvolt);
>> + if (rv == 0) {
>> + reg->min_uvolt = min_uvolt;
>> + reg->max_uvolt = max_uvolt;
>> + }
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +int
>> +regulator_check_voltage(regulator_t reg, int uvolt)
>> +{
>> + int rv;
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> +
>> + REG_TOPO_SLOCK();
>> + rv = REGNODE_CHECK_VOLTAGE(regnode, uvolt);
>> + REG_TOPO_UNLOCK();
>> + return (rv);
>> +}
>> +
>> +const char *
>> +regulator_get_name(regulator_t reg)
>> +{
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> + return (regnode->name);
>> +}
>> +
>> +int
>> +regulator_get_by_name(device_t cdev, const char *name, regulator_t
>> *reg)
>> +{
>> + struct regnode *regnode;
>> +
>> + REG_TOPO_SLOCK();
>> + regnode = regnode_find_by_name(name);
>> + if (regnode == NULL) {
>> + REG_TOPO_UNLOCK();
>> + return (ENODEV);
>> + }
>> + *reg = regulator_create(regnode, cdev);
>> + REG_TOPO_UNLOCK();
>> + return (0);
>> +}
>> +
>> +int
>> +regulator_get_by_id(device_t cdev, device_t pdev, intptr_t id, regulator_t
>> *reg)
>> +{
>> + struct regnode *regnode;
>> +
>> + REG_TOPO_SLOCK();
>> +
>> + regnode = regnode_find_by_id(pdev, id);
>> + if (regnode == NULL) {
>> + REG_TOPO_UNLOCK();
>> + return (ENODEV);
>> + }
>> + *reg = regulator_create(regnode, cdev);
>> + REG_TOPO_UNLOCK();
>> +
>> + return (0);
>> +}
>> +
>> +int
>> +regulator_release(regulator_t reg)
>> +{
>> + struct regnode *regnode;
>> +
>> + regnode = reg->regnode;
>> + KASSERT(regnode->ref_cnt > 0,
>> + ("Attempt to access unreferenced regulator: %s\n", regnode-
>>> name));
>> + REG_TOPO_SLOCK();
>> + while (reg->enable_cnt > 0) {
>> + regnode_disable(regnode);
>> + reg->enable_cnt--;
>> + }
>> + REGNODE_XLOCK(regnode);
>> + TAILQ_REMOVE(®node->consumers_list, reg, link);
>> + regnode->ref_cnt--;
>> + REGNODE_UNLOCK(regnode);
>> + REG_TOPO_UNLOCK();
>> +
>> + free(reg, M_REGULATOR);
>> + return (0);
>> +}
>> +
>> +#ifdef FDT
>> +/* Default DT mapper. */
>> +int
>> +regdev_default_ofw_map(device_t dev, 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
>> +regulator_parse_ofw_stdparam(device_t pdev, phandle_t node,
>> + struct regnode_init_def *def)
>> +{
>> + phandle_t supply_xref;
>> + struct regnode_std_param *par;
>> + int rv;
>> +
>> + par = &def->std_param;
>> + rv = OF_getprop_alloc(node, "regulator-name",
>> + (void **)&def->name);
>> + if (rv <= 0) {
>> + device_printf(pdev, "%s: Missing regulator name\n",
>> + __func__);
>> + return (ENXIO);
>> + }
>> +
>> + rv = OF_getencprop(node, "regulator-min-microvolt", &par-
>>> min_uvolt,
>> + sizeof(par->min_uvolt));
>> + if (rv <= 0)
>> + par->min_uvolt = 0;
>> +
>> + rv = OF_getencprop(node, "regulator-max-microvolt", &par-
>>> max_uvolt,
>> + sizeof(par->max_uvolt));
>> + if (rv <= 0)
>> + par->max_uvolt = 0;
>> +
>> + rv = OF_getencprop(node, "regulator-min-microamp", &par-
>>> min_uamp,
>> + sizeof(par->min_uamp));
>> + if (rv <= 0)
>> + par->min_uamp = 0;
>> +
>> + rv = OF_getencprop(node, "regulator-max-microamp", &par-
>>> max_uamp,
>> + sizeof(par->max_uamp));
>> + if (rv <= 0)
>> + par->max_uamp = 0;
>> +
>> + rv = OF_getencprop(node, "regulator-ramp-delay", &par-
>>> ramp_delay,
>> + sizeof(par->ramp_delay));
>> + if (rv <= 0)
>> + par->ramp_delay = 0;
>> +
>> + rv = OF_getencprop(node, "regulator-enable-ramp-delay",
>> + &par->enable_delay, sizeof(par->enable_delay));
>> + if (rv <= 0)
>> + par->enable_delay = 0;
>> +
>> + if (OF_hasprop(node, "regulator-boot-on"))
>> + par->boot_on = true;
>> +
>> + if (OF_hasprop(node, "regulator-always-on"))
>> + par->always_on = true;
>> +
>> + if (OF_hasprop(node, "enable-active-high"))
>> + par->enable_active_high = 1;
>> +
>> + rv = OF_getencprop(node, "vin-supply", &supply_xref,
>> + sizeof(supply_xref));
>> + if (rv >= 0) {
>> + rv = OF_getprop_alloc(supply_xref, "regulator-name",
>> + (void **)&def->parent_name);
>> + if (rv <= 0)
>> + def->parent_name = NULL;
>> + }
>> + return (0);
>> +}
>> +
>> +int
>> +regulator_get_by_ofw_property(device_t cdev, phandle_t cnode, char
>> *name,
>> + regulator_t *reg)
>> +{
>> + phandle_t *cells;
>> + device_t regdev;
>> + int ncells, rv;
>> + intptr_t id;
>> +
>> + *reg = NULL;
>> +
>> + if (cnode <= 0)
>> + cnode = ofw_bus_get_node(cdev);
>> + if (cnode <= 0) {
>> + device_printf(cdev, "%s called on not ofw based device\n",
>> + __func__);
>> + return (ENXIO);
>> + }
>> +
>> + cells = NULL;
>> + ncells = OF_getencprop_alloc_multi(cnode, name, sizeof(*cells),
>> + (void **)&cells);
>> + if (ncells <= 0)
>> + return (ENOENT);
>> +
>> + /* Translate xref to device */
>> + regdev = OF_device_from_xref(cells[0]);
>> + if (regdev == NULL) {
>> + OF_prop_free(cells);
>> + return (ENODEV);
>> + }
>> +
>> + /* Map regulator to number */
>> + rv = REGDEV_MAP(regdev, cells[0], ncells - 1, cells + 1, &id);
>> + OF_prop_free(cells);
>> + if (rv != 0)
>> + return (rv);
>> + return (regulator_get_by_id(cdev, regdev, id, reg));
>> +}
>> +#endif
>> +
>> +/* --------------------------------------------------------------------------
>> + *
>> + * Regulator utility functions.
>> + *
>> + */
>> +
>> +/* Convert raw selector value to real voltage */
>> +int
>> +regulator_range_sel8_to_volt(struct regulator_range *ranges, int nranges,
>> + uint8_t sel, int *volt)
>> +{
>> + struct regulator_range *range;
>> + int i;
>> +
>> + if (nranges == 0)
>> + panic("Voltage regulator have zero ranges\n");
>> +
>> + for (i = 0; i < nranges ; i++) {
>> + range = ranges + i;
>> +
>> + if (!(sel >= range->min_sel &&
>> + sel <= range->max_sel))
>> + continue;
>> +
>> + sel -= range->min_sel;
>> +
>> + *volt = range->min_uvolt + sel * range->step_uvolt;
>> + return (0);
>> + }
>> +
>> + return (ERANGE);
>> +}
>> +
>> +int
>> +regulator_range_volt_to_sel8(struct regulator_range *ranges, int nranges,
>> + int min_uvolt, int max_uvolt, uint8_t *out_sel)
>> +{
>> + struct regulator_range *range;
>> + uint8_t sel;
>> + int uvolt;
>> + int rv, i;
>> +
>> + if (nranges == 0)
>> + panic("Voltage regulator have zero ranges\n");
>> +
>> + for (i = 0; i < nranges; i++) {
>> + range = ranges + i;
>> + uvolt = range->min_uvolt +
>> + (range->max_sel - range->min_sel) * range->step_uvolt;
>> +
>> + if ((min_uvolt > uvolt) ||
>> + (max_uvolt < range->min_uvolt))
>> + continue;
>> +
>> + if (min_uvolt <= range->min_uvolt)
>> + min_uvolt = range->min_uvolt;
>> +
>> + /* if step == 0 -> fixed voltage range. */
>> + if (range->step_uvolt == 0)
>> + sel = 0;
>> + else
>> + sel = DIV_ROUND_UP(min_uvolt - range->min_uvolt,
>> + range->step_uvolt);
>> +
>> +
>> + sel += range->min_sel;
>> +
>> + break;
>> + }
>> +
>> + if (i >= nranges)
>> + return (ERANGE);
>> +
>> + /* Verify new settings. */
>> + rv = regulator_range_sel8_to_volt(ranges, nranges, sel, &uvolt);
>> + if (rv != 0)
>> + return (rv);
>> + if ((uvolt < min_uvolt) || (uvolt > max_uvolt))
>> + return (ERANGE);
>> +
>> + *out_sel = sel;
>> + return (0);
>> +}
>> diff --git a/freebsd/sys/dev/extres/regulator/regulator.h
>> b/freebsd/sys/dev/extres/regulator/regulator.h
>> new file mode 100644
>> index 00000000..3905aa36
>> --- /dev/null
>> +++ b/freebsd/sys/dev/extres/regulator/regulator.h
>> @@ -0,0 +1,156 @@
>> +/*-
>> + * Copyright 2016 Michal Meloun <mmel at 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.
>> + *
>> + * $FreeBSD$
>> + */
>> +
>> +#ifndef _DEV_EXTRES_REGULATOR_H_
>> +#define _DEV_EXTRES_REGULATOR_H_
>> +#include <rtems/bsd/local/opt_platform.h>
>> +
>> +#include <sys/kobj.h>
>> +#include <sys/sysctl.h>
>> +#ifdef FDT
>> +#include <dev/ofw/ofw_bus.h>
>> +#endif
>> +#include <rtems/bsd/local/regnode_if.h>
>> +
>> +SYSCTL_DECL(_hw_regulator);
>> +
>> +#define REGULATOR_FLAGS_STATIC 0x00000001 /* Static strings */
>> +#define REGULATOR_FLAGS_NOT_DISABLE 0x00000002 /* Cannot be
>> disabled */
>> +
>> +#define REGULATOR_STATUS_ENABLED 0x00000001
>> +#define REGULATOR_STATUS_OVERCURRENT 0x00000002
>> +
>> +typedef struct regulator *regulator_t;
>> +
>> +/* Standard regulator parameters. */
>> +struct regnode_std_param {
>> + int min_uvolt; /* In uV */
>> + int max_uvolt; /* In uV */
>> + int min_uamp; /* In uA */
>> + int max_uamp; /* In uA */
>> + int ramp_delay; /* In uV/usec */
>> + int enable_delay; /* In usec */
>> + bool boot_on; /* Is enabled on boot */
>> + bool always_on; /* Must be enabled */
>> + int enable_active_high;
>> +};
>> +
>> +/* Initialization parameters. */
>> +struct regnode_init_def {
>> + char *name; /* Regulator name */
>> + char *parent_name; /* Name of parent
>> regulator */
>> + struct regnode_std_param std_param; /* Standard
>> parameters */
>> + intptr_t id; /* Regulator ID */
>> + int flags; /* Flags */
>> +#ifdef FDT
>> + phandle_t ofw_node; /* OFW node of regulator */
>> +#endif
>> +};
>> +
>> +struct regulator_range {
>> + int min_uvolt;
>> + int step_uvolt;
>> + uint8_t min_sel;
>> + uint8_t max_sel;
>> +};
>> +
>> +#define REG_RANGE_INIT(_min_sel, _max_sel, _min_uvolt,
>> _step_uvolt) { \
>> + .min_sel = _min_sel, \
>> + .max_sel = _max_sel, \
>> + .min_uvolt = _min_uvolt, \
>> + .step_uvolt = _step_uvolt, \
>> +}
>> +
>> +/*
>> + * Shorthands for constructing method tables.
>> + */
>> +#define REGNODEMETHOD KOBJMETHOD
>> +#define REGNODEMETHOD_END KOBJMETHOD_END
>> +#define regnode_method_t kobj_method_t
>> +#define regnode_class_t kobj_class_t
>> +DECLARE_CLASS(regnode_class);
>> +
>> +/* Providers interface. */
>> +struct regnode *regnode_create(device_t pdev, regnode_class_t
>> regnode_class,
>> + struct regnode_init_def *def);
>> +struct regnode *regnode_register(struct regnode *regnode);
>> +const char *regnode_get_name(struct regnode *regnode);
>> +const char *regnode_get_parent_name(struct regnode *regnode);
>> +struct regnode *regnode_get_parent(struct regnode *regnode);
>> +int regnode_get_flags(struct regnode *regnode);
>> +void *regnode_get_softc(struct regnode *regnode);
>> +device_t regnode_get_device(struct regnode *regnode);
>> +struct regnode_std_param *regnode_get_stdparam(struct regnode
>> *regnode);
>> +void regnode_topo_unlock(void);
>> +void regnode_topo_xlock(void);
>> +void regnode_topo_slock(void);
>> +
>> +int regnode_enable(struct regnode *regnode);
>> +int regnode_disable(struct regnode *regnode);
>> +int regnode_stop(struct regnode *regnode, int depth);
>> +int regnode_status(struct regnode *regnode, int *status);
>> +int regnode_get_voltage(struct regnode *regnode, int *uvolt);
>> +int regnode_set_voltage(struct regnode *regnode, int min_uvolt, int
>> max_uvolt);
>> +int regnode_set_constraint(struct regnode *regnode);
>> +
>> +/* Standard method that aren't default */
>> +int regnode_method_check_voltage(struct regnode *regnode, int uvolt);
>> +
>> +#ifdef FDT
>> +phandle_t regnode_get_ofw_node(struct regnode *regnode);
>> +#endif
>> +
>> +/* Consumers interface. */
>> +int regulator_get_by_name(device_t cdev, const char *name,
>> + regulator_t *regulator);
>> +int regulator_get_by_id(device_t cdev, device_t pdev, intptr_t id,
>> + regulator_t *regulator);
>> +int regulator_release(regulator_t regulator);
>> +const char *regulator_get_name(regulator_t regulator);
>> +int regulator_enable(regulator_t reg);
>> +int regulator_disable(regulator_t reg);
>> +int regulator_stop(regulator_t reg);
>> +int regulator_status(regulator_t reg, int *status);
>> +int regulator_get_voltage(regulator_t reg, int *uvolt);
>> +int regulator_set_voltage(regulator_t reg, int min_uvolt, int max_uvolt);
>> +int regulator_check_voltage(regulator_t reg, int uvolt);
>> +
>> +#ifdef FDT
>> +int regulator_get_by_ofw_property(device_t dev, phandle_t node, char
>> *name,
>> + regulator_t *reg);
>> +int regulator_parse_ofw_stdparam(device_t dev, phandle_t node,
>> + struct regnode_init_def *def);
>> +#endif
>> +
>> +/* Utility functions */
>> +int regulator_range_volt_to_sel8(struct regulator_range *ranges, int
>> nranges,
>> + int min_uvolt, int max_uvolt, uint8_t *out_sel);
>> +int regulator_range_sel8_to_volt(struct regulator_range *ranges, int
>> nranges,
>> + uint8_t sel, int *volt);
>> +
>> +#endif /* _DEV_EXTRES_REGULATOR_H_ */
>> diff --git a/freebsd/sys/dev/extres/regulator/regulator_bus.c
>> b/freebsd/sys/dev/extres/regulator/regulator_bus.c
>> new file mode 100644
>> index 00000000..b79c2633
>> --- /dev/null
>> +++ b/freebsd/sys/dev/extres/regulator/regulator_bus.c
>> @@ -0,0 +1,89 @@
>> +#include <machine/rtems-bsd-kernel-space.h>
>> +
>> +/*-
>> + * Copyright 2016 Michal Meloun <mmel at 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.
>> + */
>> +
>> +#include <sys/cdefs.h>
>> +__FBSDID("$FreeBSD$");
>> +
>> +#include <sys/param.h>
>> +#include <sys/systm.h>
>> +#include <sys/kernel.h>
>> +#include <sys/module.h>
>> +#include <sys/bus.h>
>> +
>> +#include <dev/fdt/simplebus.h>
>> +
>> +#include <dev/ofw/openfirm.h>
>> +#include <dev/ofw/ofw_bus_subr.h>
>> +
>> +struct ofw_regulator_bus_softc {
>> + struct simplebus_softc simplebus_sc;
>> +};
>> +
>> +static int
>> +ofw_regulator_bus_probe(device_t dev)
>> +{
>> + const char *name;
>> +
>> + name = ofw_bus_get_name(dev);
>> + if (name == NULL || strcmp(name, "regulators") != 0)
>> + return (ENXIO);
>> + device_set_desc(dev, "OFW regulators bus");
>> +
>> + return (0);
>> +}
>> +
>> +static int
>> +ofw_regulator_bus_attach(device_t dev)
>> +{
>> + phandle_t node, child;
>> +
>> + node = ofw_bus_get_node(dev);
>> + simplebus_init(dev, node);
>> +
>> + for (child = OF_child(node); child > 0; child = OF_peer(child)) {
>> + simplebus_add_device(dev, child, 0, NULL, -1, NULL);
>> + }
>> +
>> + return (bus_generic_attach(dev));
>> +}
>> +
>> +static device_method_t ofw_regulator_bus_methods[] = {
>> + /* Device interface */
>> + DEVMETHOD(device_probe, ofw_regulator_bus_probe),
>> + DEVMETHOD(device_attach, ofw_regulator_bus_attach),
>> +
>> + DEVMETHOD_END
>> +};
>> +
>> +DEFINE_CLASS_1(ofw_regulator_bus, ofw_regulator_bus_driver,
>> + ofw_regulator_bus_methods, sizeof(struct ofw_regulator_bus_softc),
>> + simplebus_driver);
>> +static devclass_t ofw_regulator_bus_devclass;
>> +EARLY_DRIVER_MODULE(ofw_regulator_bus, simplebus,
>> ofw_regulator_bus_driver,
>> + ofw_regulator_bus_devclass, 0, 0, BUS_PASS_BUS +
>> BUS_PASS_ORDER_MIDDLE);
>> +MODULE_VERSION(ofw_regulator_bus, 1);
>> diff --git a/freebsd/sys/dev/extres/regulator/regulator_fixed.c
>> b/freebsd/sys/dev/extres/regulator/regulator_fixed.c
>> new file mode 100644
>> index 00000000..0bc6d96e
>> --- /dev/null
>> +++ b/freebsd/sys/dev/extres/regulator/regulator_fixed.c
>> @@ -0,0 +1,502 @@
>> +#include <machine/rtems-bsd-kernel-space.h>
>> +
>> +/*-
>> + * Copyright 2016 Michal Meloun <mmel at 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.
>> + */
>> +
>> +#include <sys/cdefs.h>
>> +__FBSDID("$FreeBSD$");
>> +
>> +#include <rtems/bsd/local/opt_platform.h>
>> +#include <sys/param.h>
>> +#include <sys/conf.h>
>> +#include <sys/gpio.h>
>> +#include <sys/kernel.h>
>> +#include <sys/kobj.h>
>> +#include <sys/systm.h>
>> +#include <sys/module.h>
>> +#include <sys/mutex.h>
>> +
>> +#ifdef FDT
>> +#include <dev/fdt/fdt_common.h>
>> +#include <dev/ofw/ofw_bus.h>
>> +#include <dev/ofw/ofw_bus_subr.h>
>> +#endif
>> +#include <dev/gpio/gpiobusvar.h>
>> +#include <dev/extres/regulator/regulator_fixed.h>
>> +
>> +#include <rtems/bsd/local/regdev_if.h>
>> +
>> +MALLOC_DEFINE(M_FIXEDREGULATOR, "fixedregulator", "Fixed
>> regulator");
>> +
>> +/* GPIO list for shared pins. */
>> +typedef TAILQ_HEAD(gpio_list, gpio_entry) gpio_list_t;
>> +struct gpio_entry {
>> + TAILQ_ENTRY(gpio_entry) link;
>> + struct gpiobus_pin gpio_pin;
>> + int use_cnt;
>> + int enable_cnt;
>> + bool always_on;
>> +};
>> +static gpio_list_t gpio_list = TAILQ_HEAD_INITIALIZER(gpio_list);
>> +static struct mtx gpio_list_mtx;
>> +MTX_SYSINIT(gpio_list_lock, &gpio_list_mtx, "Regulator GPIO lock",
>> MTX_DEF);
>> +
>> +struct regnode_fixed_sc {
>> + struct regnode_std_param *param;
>> + bool gpio_open_drain;
>> + struct gpio_entry *gpio_entry;
>> +};
>> +
>> +static int regnode_fixed_init(struct regnode *regnode);
>> +static int regnode_fixed_enable(struct regnode *regnode, bool enable,
>> + int *udelay);
>> +static int regnode_fixed_status(struct regnode *regnode, int *status);
>> +static int regnode_fixed_stop(struct regnode *regnode, int *udelay);
>> +
>> +static regnode_method_t regnode_fixed_methods[] = {
>> + /* Regulator interface */
>> + REGNODEMETHOD(regnode_init, regnode_fixed_init),
>> + REGNODEMETHOD(regnode_enable,
>> regnode_fixed_enable),
>> + REGNODEMETHOD(regnode_status,
>> regnode_fixed_status),
>> + REGNODEMETHOD(regnode_stop, regnode_fixed_stop),
>> + REGNODEMETHOD(regnode_check_voltage,
>> regnode_method_check_voltage),
>> + REGNODEMETHOD_END
>> +};
>> +DEFINE_CLASS_1(regnode_fixed, regnode_fixed_class,
>> regnode_fixed_methods,
>> + sizeof(struct regnode_fixed_sc), regnode_class);
>> +
>> +/*
>> + * GPIO list functions.
>> + * Two or more regulators can share single GPIO pins, so we must track all
>> + * GPIOs in gpio_list.
>> + * The GPIO pin is registerd and reseved for first consumer, all others share
>> + * gpio_entry with it.
>> + */
>> +static struct gpio_entry *
>> +regnode_get_gpio_entry(struct gpiobus_pin *gpio_pin)
>> +{
>> + struct gpio_entry *entry, *tmp;
>> + device_t busdev;
>> + int rv;
>> +
>> + busdev = GPIO_GET_BUS(gpio_pin->dev);
>> + if (busdev == NULL)
>> + return (NULL);
>> + entry = malloc(sizeof(struct gpio_entry), M_FIXEDREGULATOR,
>> + M_WAITOK | M_ZERO);
>> +
>> + mtx_lock(&gpio_list_mtx);
>> +
>> + TAILQ_FOREACH(tmp, &gpio_list, link) {
>> + if (tmp->gpio_pin.dev == gpio_pin->dev &&
>> + tmp->gpio_pin.pin == gpio_pin->pin) {
>> + tmp->use_cnt++;
>> + mtx_unlock(&gpio_list_mtx);
>> + free(entry, M_FIXEDREGULATOR);
>> + return (tmp);
>> + }
>> + }
>> +
>> + /* Reserve pin. */
>> + /* XXX Can we call gpiobus_acquire_pin() with gpio_list_mtx held? */
>> + rv = gpiobus_acquire_pin(busdev, gpio_pin->pin);
>> + if (rv != 0) {
>> + mtx_unlock(&gpio_list_mtx);
>> + free(entry, M_FIXEDREGULATOR);
>> + return (NULL);
>> + }
>> + /* Everything is OK, build new entry and insert it to list. */
>> + entry->gpio_pin = *gpio_pin;
>> + entry->use_cnt = 1;
>> + TAILQ_INSERT_TAIL(&gpio_list, entry, link);
>> +
>> + mtx_unlock(&gpio_list_mtx);
>> + return (entry);
>> +}
>> +
>> +
>> +/*
>> + * Regulator class implementation.
>> + */
>> +static int
>> +regnode_fixed_init(struct regnode *regnode)
>> +{
>> + device_t dev;
>> + struct regnode_fixed_sc *sc;
>> + struct gpiobus_pin *pin;
>> + uint32_t flags;
>> + int rv;
>> +
>> + sc = regnode_get_softc(regnode);
>> + dev = regnode_get_device(regnode);
>> + sc->param = regnode_get_stdparam(regnode);
>> + if (sc->gpio_entry == NULL)
>> + return (0);
>> + pin = &sc->gpio_entry->gpio_pin;
>> +
>> + flags = GPIO_PIN_OUTPUT;
>> + if (sc->gpio_open_drain)
>> + flags |= GPIO_PIN_OPENDRAIN;
>> + if (sc->param->boot_on || sc->param->always_on) {
>> + rv = GPIO_PIN_SET(pin->dev, pin->pin, sc->param-
>>> enable_active_high);
>> + if (rv != 0) {
>> + device_printf(dev, "Cannot set GPIO pin: %d\n",
>> + pin->pin);
>> + return (rv);
>> + }
>> + }
>> +
>> + rv = GPIO_PIN_SETFLAGS(pin->dev, pin->pin, flags);
>> + if (rv != 0) {
>> + device_printf(dev, "Cannot configure GPIO pin: %d\n", pin-
>>> pin);
>> + return (rv);
>> + }
>> +
>> + return (0);
>> +}
>> +
>> +/*
>> + * Enable/disable regulator.
>> + * Take shared GPIO pins in account
>> + */
>> +static int
>> +regnode_fixed_enable(struct regnode *regnode, bool enable, int *udelay)
>> +{
>> + device_t dev;
>> + struct regnode_fixed_sc *sc;
>> + struct gpiobus_pin *pin;
>> + int rv;
>> +
>> + sc = regnode_get_softc(regnode);
>> + dev = regnode_get_device(regnode);
>> +
>> + *udelay = 0;
>> + if (sc->gpio_entry == NULL)
>> + return (0);
>> + pin = &sc->gpio_entry->gpio_pin;
>> + if (enable) {
>> + sc->gpio_entry->enable_cnt++;
>> + if (sc->gpio_entry->enable_cnt > 1)
>> + return (0);
>> + } else {
>> + KASSERT(sc->gpio_entry->enable_cnt > 0,
>> + ("Invalid enable count"));
>> + sc->gpio_entry->enable_cnt--;
>> + if (sc->gpio_entry->enable_cnt >= 1)
>> + return (0);
>> + }
>> + if (sc->gpio_entry->always_on && !enable)
>> + return (0);
>> + if (!sc->param->enable_active_high)
>> + enable = !enable;
>> + rv = GPIO_PIN_SET(pin->dev, pin->pin, enable);
>> + if (rv != 0) {
>> + device_printf(dev, "Cannot set GPIO pin: %d\n", pin->pin);
>> + return (rv);
>> + }
>> + *udelay = sc->param->enable_delay;
>> + return (0);
>> +}
>> +
>> +/*
>> + * Stop (physicaly shutdown) regulator.
>> + * Take shared GPIO pins in account
>> + */
>> +static int
>> +regnode_fixed_stop(struct regnode *regnode, int *udelay)
>> +{
>> + device_t dev;
>> + struct regnode_fixed_sc *sc;
>> + struct gpiobus_pin *pin;
>> + int rv;
>> +
>> + sc = regnode_get_softc(regnode);
>> + dev = regnode_get_device(regnode);
>> +
>> + *udelay = 0;
>> + if (sc->gpio_entry == NULL)
>> + return (0);
>> + if (sc->gpio_entry->always_on)
>> + return (0);
>> + pin = &sc->gpio_entry->gpio_pin;
>> + if (sc->gpio_entry->enable_cnt > 0) {
>> + /* Other regulator(s) are enabled. */
>> + /* XXXX Any diagnostic message? Or error? */
>> + return (0);
>> + }
>> + rv = GPIO_PIN_SET(pin->dev, pin->pin,
>> + sc->param->enable_active_high ? false: true);
>> + if (rv != 0) {
>> + device_printf(dev, "Cannot set GPIO pin: %d\n", pin->pin);
>> + return (rv);
>> + }
>> + *udelay = sc->param->enable_delay;
>> + return (0);
>> +}
>> +
>> +static int
>> +regnode_fixed_status(struct regnode *regnode, int *status)
>> +{
>> + struct regnode_fixed_sc *sc;
>> + struct gpiobus_pin *pin;
>> + uint32_t val;
>> + int rv;
>> +
>> + sc = regnode_get_softc(regnode);
>> +
>> + *status = 0;
>> + if (sc->gpio_entry == NULL) {
>> + *status = REGULATOR_STATUS_ENABLED;
>> + return (0);
>> + }
>> + pin = &sc->gpio_entry->gpio_pin;
>> +
>> + rv = GPIO_PIN_GET(pin->dev, pin->pin, &val);
>> + if (rv == 0) {
>> + if (!sc->param->enable_active_high ^ (val != 0))
>> + *status = REGULATOR_STATUS_ENABLED;
>> + }
>> + return (rv);
>> +}
>> +
>> +int
>> +regnode_fixed_register(device_t dev, struct regnode_fixed_init_def
>> *init_def)
>> +{
>> + struct regnode *regnode;
>> + struct regnode_fixed_sc *sc;
>> +
>> + regnode = regnode_create(dev, ®node_fixed_class,
>> + &init_def->reg_init_def);
>> + if (regnode == NULL) {
>> + device_printf(dev, "Cannot create regulator.\n");
>> + return(ENXIO);
>> + }
>> + sc = regnode_get_softc(regnode);
>> + sc->gpio_open_drain = init_def->gpio_open_drain;
>> + if (init_def->gpio_pin != NULL) {
>> + sc->gpio_entry = regnode_get_gpio_entry(init_def-
>>> gpio_pin);
>> + if (sc->gpio_entry == NULL)
>> + return(ENXIO);
>> + }
>> + regnode = regnode_register(regnode);
>> + if (regnode == NULL) {
>> + device_printf(dev, "Cannot register regulator.\n");
>> + return(ENXIO);
>> + }
>> +
>> + if (sc->gpio_entry != NULL)
>> + sc->gpio_entry->always_on |= sc->param->always_on;
>> +
>> + return (0);
>> +}
>> +
>> +/*
>> + * OFW Driver implementation.
>> + */
>> +#ifdef FDT
>> +
>> +struct regfix_softc
>> +{
>> + device_t dev;
>> + bool attach_done;
>> + struct regnode_fixed_init_def init_def;
>> + phandle_t gpio_prodxref;
>> + pcell_t *gpio_cells;
>> + int gpio_ncells;
>> + struct gpiobus_pin gpio_pin;
>> +};
>> +
>> +static struct ofw_compat_data compat_data[] = {
>> + {"regulator-fixed", 1},
>> + {NULL, 0},
>> +};
>> +
>> +static int
>> +regfix_get_gpio(struct regfix_softc * sc)
>> +{
>> + device_t busdev;
>> + phandle_t node;
>> +
>> + int rv;
>> +
>> + if (sc->gpio_prodxref == 0)
>> + return (0);
>> +
>> + node = ofw_bus_get_node(sc->dev);
>> +
>> + /* Test if controller exist. */
>> + sc->gpio_pin.dev = OF_device_from_xref(sc->gpio_prodxref);
>> + if (sc->gpio_pin.dev == NULL)
>> + return (ENODEV);
>> +
>> + /* Test if GPIO bus already exist. */
>> + busdev = GPIO_GET_BUS(sc->gpio_pin.dev);
>> + if (busdev == NULL)
>> + return (ENODEV);
>> +
>> + rv = gpio_map_gpios(sc->gpio_pin.dev, node,
>> + OF_node_from_xref(sc->gpio_prodxref), sc->gpio_ncells,
>> + sc->gpio_cells, &(sc->gpio_pin.pin), &(sc->gpio_pin.flags));
>> + if (rv != 0) {
>> + device_printf(sc->dev, "Cannot map the gpio property.\n");
>> + return (ENXIO);
>> + }
>> + sc->init_def.gpio_pin = &sc->gpio_pin;
>> + return (0);
>> +}
>> +
>> +static int
>> +regfix_parse_fdt(struct regfix_softc * sc)
>> +{
>> + phandle_t node;
>> + int rv;
>> + struct regnode_init_def *init_def;
>> +
>> + node = ofw_bus_get_node(sc->dev);
>> + init_def = &sc->init_def.reg_init_def;
>> +
>> + rv = regulator_parse_ofw_stdparam(sc->dev, node, init_def);
>> + if (rv != 0) {
>> + device_printf(sc->dev, "Cannot parse standard
>> parameters.\n");
>> + return(rv);
>> + }
>> +
>> + /* Fixed regulator uses 'startup-delay-us' property for enable_delay
>> */
>> + rv = OF_getencprop(node, "startup-delay-us",
>> + &init_def->std_param.enable_delay,
>> + sizeof(init_def->std_param.enable_delay));
>> + if (rv <= 0)
>> + init_def->std_param.enable_delay = 0;
>> + /* GPIO pin */
>> + if (OF_hasprop(node, "gpio-open-drain"))
>> + sc->init_def.gpio_open_drain = true;
>> +
>> + if (!OF_hasprop(node, "gpio"))
>> + return (0);
>> + rv = ofw_bus_parse_xref_list_alloc(node, "gpio", "#gpio-cells", 0,
>> + &sc->gpio_prodxref, &sc->gpio_ncells, &sc->gpio_cells);
>> + if (rv != 0) {
>> + sc->gpio_prodxref = 0;
>> + device_printf(sc->dev, "Malformed gpio property\n");
>> + return (ENXIO);
>> + }
>> + return (0);
>> +}
>> +
>> +static void
>> +regfix_new_pass(device_t dev)
>> +{
>> + struct regfix_softc * sc;
>> + int rv;
>> +
>> + sc = device_get_softc(dev);
>> + bus_generic_new_pass(dev);
>> +
>> + if (sc->attach_done)
>> + return;
>> +
>> + /* Try to get and configure GPIO. */
>> + rv = regfix_get_gpio(sc);
>> + if (rv != 0)
>> + return;
>> +
>> + /* Register regulator. */
>> + regnode_fixed_register(sc->dev, &sc->init_def);
>> + sc->attach_done = true;
>> +}
>> +
>> +static int
>> +regfix_probe(device_t dev)
>> +{
>> +
>> + if (!ofw_bus_status_okay(dev))
>> + return (ENXIO);
>> +
>> + if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
>> + return (ENXIO);
>> +
>> + device_set_desc(dev, "Fixed Regulator");
>> + return (BUS_PROBE_DEFAULT);
>> +}
>> +
>> +static int
>> +regfix_detach(device_t dev)
>> +{
>> +
>> + /* This device is always present. */
>> + return (EBUSY);
>> +}
>> +
>> +static int
>> +regfix_attach(device_t dev)
>> +{
>> + struct regfix_softc * sc;
>> + int rv;
>> +
>> + sc = device_get_softc(dev);
>> + sc->dev = dev;
>> +
>> + /* Parse FDT data. */
>> + rv = regfix_parse_fdt(sc);
>> + if (rv != 0)
>> + return(ENXIO);
>> +
>> + /* Fill reset of init. */
>> + sc->init_def.reg_init_def.id = 1;
>> + sc->init_def.reg_init_def.flags = REGULATOR_FLAGS_STATIC;
>> +
>> + /* Try to get and configure GPIO. */
>> + rv = regfix_get_gpio(sc);
>> + if (rv != 0)
>> + return (bus_generic_attach(dev));
>> +
>> + /* Register regulator. */
>> + regnode_fixed_register(sc->dev, &sc->init_def);
>> + sc->attach_done = true;
>> +
>> + return (bus_generic_attach(dev));
>> +}
>> +
>> +static device_method_t regfix_methods[] = {
>> + /* Device interface */
>> + DEVMETHOD(device_probe, regfix_probe),
>> + DEVMETHOD(device_attach, regfix_attach),
>> + DEVMETHOD(device_detach, regfix_detach),
>> + /* Bus interface */
>> + DEVMETHOD(bus_new_pass, regfix_new_pass),
>> + /* Regdev interface */
>> + DEVMETHOD(regdev_map, regdev_default_ofw_map),
>> +
>> + DEVMETHOD_END
>> +};
>> +
>> +static devclass_t regfix_devclass;
>> +DEFINE_CLASS_0(regfix, regfix_driver, regfix_methods,
>> + sizeof(struct regfix_softc));
>> +EARLY_DRIVER_MODULE(regfix, simplebus, regfix_driver,
>> + regfix_devclass, 0, 0, BUS_PASS_BUS);
>> +
>> +#endif /* FDT */
>> diff --git a/freebsd/sys/dev/extres/regulator/regulator_fixed.h
>> b/freebsd/sys/dev/extres/regulator/regulator_fixed.h
>> new file mode 100644
>> index 00000000..5cc07516
>> --- /dev/null
>> +++ b/freebsd/sys/dev/extres/regulator/regulator_fixed.h
>> @@ -0,0 +1,44 @@
>> +/*-
>> + * Copyright 2016 Michal Meloun <mmel at 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.
>> + *
>> + * $FreeBSD$
>> + */
>> +
>> +#ifndef _DEV_EXTRES_REGULATOR_FIXED_H_
>> +#define _DEV_EXTRES_REGULATOR_FIXED_H_
>> +
>> +#include <dev/gpio/gpiobusvar.h>
>> +#include <dev/extres/regulator/regulator.h>
>> +
>> +struct regnode_fixed_init_def {
>> + struct regnode_init_def reg_init_def;
>> + bool gpio_open_drain;
>> + struct gpiobus_pin *gpio_pin;
>> +};
>> +
>> +int regnode_fixed_register(device_t dev,
>> + struct regnode_fixed_init_def *init_def);
>> +
>> +#endif /*_DEV_EXTRES_REGULATOR_FIXED_H_*/
>> diff --git a/freebsd/sys/dev/gpio/gpioregulator.c
>> b/freebsd/sys/dev/gpio/gpioregulator.c
>> new file mode 100644
>> index 00000000..6d05e52e
>> --- /dev/null
>> +++ b/freebsd/sys/dev/gpio/gpioregulator.c
>> @@ -0,0 +1,350 @@
>> +#include <machine/rtems-bsd-kernel-space.h>
>> +
>> +/*-
>> + * Copyright (c) 2016 Jared McNeill <jmcneill at invisible.ca>
>> + * 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 ``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 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.
>> + *
>> + * $FreeBSD$
>> + */
>> +
>> +/*
>> + * GPIO controlled regulators
>> + */
>> +
>> +#include <sys/cdefs.h>
>> +__FBSDID("$FreeBSD$");
>> +
>> +#include <sys/param.h>
>> +#include <sys/systm.h>
>> +#include <sys/bus.h>
>> +#include <sys/rman.h>
>> +#include <sys/kernel.h>
>> +#include <sys/module.h>
>> +#include <sys/gpio.h>
>> +
>> +#include <dev/ofw/ofw_bus.h>
>> +#include <dev/ofw/ofw_bus_subr.h>
>> +
>> +#include <dev/gpio/gpiobusvar.h>
>> +
>> +#include <dev/extres/regulator/regulator.h>
>> +
>> +#include <rtems/bsd/local/regdev_if.h>
>> +
>> +struct gpioregulator_state {
>> + int val;
>> + uint32_t mask;
>> +};
>> +
>> +struct gpioregulator_init_def {
>> + struct regnode_init_def reg_init_def;
>> + struct gpiobus_pin *enable_pin;
>> + int enable_pin_valid;
>> + int startup_delay_us;
>> + int nstates;
>> + struct gpioregulator_state *states;
>> + int npins;
>> + struct gpiobus_pin **pins;
>> +};
>> +
>> +struct gpioregulator_reg_sc {
>> + struct regnode *regnode;
>> + device_t base_dev;
>> + struct regnode_std_param *param;
>> + struct gpioregulator_init_def *def;
>> +};
>> +
>> +struct gpioregulator_softc {
>> + device_t dev;
>> + struct gpioregulator_reg_sc *reg_sc;
>> + struct gpioregulator_init_def init_def;
>> +};
>> +
>> +static int
>> +gpioregulator_regnode_init(struct regnode *regnode)
>> +{
>> + struct gpioregulator_reg_sc *sc;
>> + int error, n;
>> +
>> + sc = regnode_get_softc(regnode);
>> +
>> + if (sc->def->enable_pin_valid == 1) {
>> + error = gpio_pin_setflags(sc->def->enable_pin,
>> GPIO_PIN_OUTPUT);
>> + if (error != 0)
>> + return (error);
>> + }
>> +
>> + for (n = 0; n < sc->def->npins; n++) {
>> + error = gpio_pin_setflags(sc->def->pins[n],
>> GPIO_PIN_OUTPUT);
>> + if (error != 0)
>> + return (error);
>> + }
>> +
>> + return (0);
>> +}
>> +
>> +static int
>> +gpioregulator_regnode_enable(struct regnode *regnode, bool enable, int
>> *udelay)
>> +{
>> + struct gpioregulator_reg_sc *sc;
>> + bool active;
>> + int error;
>> +
>> + sc = regnode_get_softc(regnode);
>> +
>> + if (sc->def->enable_pin_valid == 1) {
>> + active = enable;
>> + if (!sc->param->enable_active_high)
>> + active = !active;
>> + error = gpio_pin_set_active(sc->def->enable_pin, active);
>> + if (error != 0)
>> + return (error);
>> + }
>> +
>> + *udelay = sc->def->startup_delay_us;
>> +
>> + return (0);
>> +}
>> +
>> +static int
>> +gpioregulator_regnode_set_voltage(struct regnode *regnode, int
>> min_uvolt,
>> + int max_uvolt, int *udelay)
>> +{
>> + struct gpioregulator_reg_sc *sc;
>> + const struct gpioregulator_state *state;
>> + int error, n;
>> +
>> + sc = regnode_get_softc(regnode);
>> + state = NULL;
>> +
>> + for (n = 0; n < sc->def->nstates; n++) {
>> + if (sc->def->states[n].val >= min_uvolt &&
>> + sc->def->states[n].val <= max_uvolt) {
>> + state = &sc->def->states[n];
>> + break;
>> + }
>> + }
>> + if (state == NULL)
>> + return (EINVAL);
>> +
>> + for (n = 0; n < sc->def->npins; n++) {
>> + error = gpio_pin_set_active(sc->def->pins[n],
>> + (state->mask >> n) & 1);
>> + if (error != 0)
>> + return (error);
>> + }
>> +
>> + *udelay = sc->def->startup_delay_us;
>> +
>> + return (0);
>> +}
>> +
>> +static int
>> +gpioregulator_regnode_get_voltage(struct regnode *regnode, int *uvolt)
>> +{
>> + struct gpioregulator_reg_sc *sc;
>> + uint32_t mask;
>> + int error, n;
>> + bool active;
>> +
>> + sc = regnode_get_softc(regnode);
>> + mask = 0;
>> +
>> + for (n = 0; n < sc->def->npins; n++) {
>> + error = gpio_pin_is_active(sc->def->pins[n], &active);
>> + if (error != 0)
>> + return (error);
>> + mask |= (active << n);
>> + }
>> +
>> + for (n = 0; n < sc->def->nstates; n++) {
>> + if (sc->def->states[n].mask == mask) {
>> + *uvolt = sc->def->states[n].val;
>> + return (0);
>> + }
>> + }
>> +
>> + return (EIO);
>> +}
>> +
>> +static regnode_method_t gpioregulator_regnode_methods[] = {
>> + /* Regulator interface */
>> + REGNODEMETHOD(regnode_init, gpioregulator_regnode_init),
>> + REGNODEMETHOD(regnode_enable,
>> gpioregulator_regnode_enable),
>> + REGNODEMETHOD(regnode_set_voltage,
>> gpioregulator_regnode_set_voltage),
>> + REGNODEMETHOD(regnode_get_voltage,
>> gpioregulator_regnode_get_voltage),
>> + REGNODEMETHOD_END
>> +};
>> +DEFINE_CLASS_1(gpioregulator_regnode, gpioregulator_regnode_class,
>> + gpioregulator_regnode_methods, sizeof(struct gpioregulator_reg_sc),
>> + regnode_class);
>> +
>> +static int
>> +gpioregulator_parse_fdt(struct gpioregulator_softc *sc)
>> +{
>> + uint32_t *pstates, mask;
>> + phandle_t node;
>> + ssize_t len;
>> + int error, n;
>> +
>> + node = ofw_bus_get_node(sc->dev);
>> + pstates = NULL;
>> + mask = 0;
>> +
>> + error = regulator_parse_ofw_stdparam(sc->dev, node,
>> + &sc->init_def.reg_init_def);
>> + if (error != 0)
>> + return (error);
>> +
>> + /* "states" property (required) */
>> + len = OF_getencprop_alloc_multi(node, "states", sizeof(*pstates),
>> + (void **)&pstates);
>> + if (len < 2) {
>> + device_printf(sc->dev, "invalid 'states' property\n");
>> + error = EINVAL;
>> + goto done;
>> + }
>> + sc->init_def.nstates = len / 2;
>> + sc->init_def.states = malloc(sc->init_def.nstates *
>> + sizeof(*sc->init_def.states), M_DEVBUF, M_WAITOK);
>> + for (n = 0; n < sc->init_def.nstates; n++) {
>> + sc->init_def.states[n].val = pstates[n * 2 + 0];
>> + sc->init_def.states[n].mask = pstates[n * 2 + 1];
>> + mask |= sc->init_def.states[n].mask;
>> + }
>> +
>> + /* "startup-delay-us" property (optional) */
>> + len = OF_getencprop(node, "startup-delay-us",
>> + &sc->init_def.startup_delay_us,
>> + sizeof(sc->init_def.startup_delay_us));
>> + if (len <= 0)
>> + sc->init_def.startup_delay_us = 0;
>> +
>> + /* "enable-gpio" property (optional) */
>> + error = gpio_pin_get_by_ofw_property(sc->dev, node, "enable-
>> gpio",
>> + &sc->init_def.enable_pin);
>> + if (error == 0)
>> + sc->init_def.enable_pin_valid = 1;
>> +
>> + /* "gpios" property */
>> + sc->init_def.npins = 32 - __builtin_clz(mask);
>> + sc->init_def.pins = malloc(sc->init_def.npins *
>> + sizeof(sc->init_def.pins), M_DEVBUF, M_WAITOK);
>> + for (n = 0; n < sc->init_def.npins; n++) {
>> + error = gpio_pin_get_by_ofw_idx(sc->dev, node, n,
>> + &sc->init_def.pins[n]);
>> + if (error != 0) {
>> + device_printf(sc->dev, "cannot get pin %d\n", n);
>> + goto done;
>> + }
>> + }
>> +
>> +done:
>> + if (error != 0) {
>> + for (n = 0; n < sc->init_def.npins; n++) {
>> + if (sc->init_def.pins[n] != NULL)
>> + gpio_pin_release(sc->init_def.pins[n]);
>> + }
>> +
>> + free(sc->init_def.states, M_DEVBUF);
>> + free(sc->init_def.pins, M_DEVBUF);
>> +
>> + }
>> + OF_prop_free(pstates);
>> +
>> + return (error);
>> +}
>> +
>> +static int
>> +gpioregulator_probe(device_t dev)
>> +{
>> +
>> + if (!ofw_bus_is_compatible(dev, "regulator-gpio"))
>> + return (ENXIO);
>> +
>> + device_set_desc(dev, "GPIO controlled regulator");
>> + return (BUS_PROBE_GENERIC);
>> +}
>> +
>> +static int
>> +gpioregulator_attach(device_t dev)
>> +{
>> + struct gpioregulator_softc *sc;
>> + struct regnode *regnode;
>> + phandle_t node;
>> + int error;
>> +
>> + sc = device_get_softc(dev);
>> + sc->dev = dev;
>> + node = ofw_bus_get_node(dev);
>> +
>> + error = gpioregulator_parse_fdt(sc);
>> + if (error != 0) {
>> + device_printf(dev, "cannot parse parameters\n");
>> + return (ENXIO);
>> + }
>> + sc->init_def.reg_init_def.id = 1;
>> + sc->init_def.reg_init_def.ofw_node = node;
>> +
>> + regnode = regnode_create(dev, &gpioregulator_regnode_class,
>> + &sc->init_def.reg_init_def);
>> + if (regnode == NULL) {
>> + device_printf(dev, "cannot create regulator\n");
>> + return (ENXIO);
>> + }
>> +
>> + sc->reg_sc = regnode_get_softc(regnode);
>> + sc->reg_sc->regnode = regnode;
>> + sc->reg_sc->base_dev = dev;
>> + sc->reg_sc->param = regnode_get_stdparam(regnode);
>> + sc->reg_sc->def = &sc->init_def;
>> +
>> + regnode_register(regnode);
>> +
>> + return (0);
>> +}
>> +
>> +
>> +static device_method_t gpioregulator_methods[] = {
>> + /* Device interface */
>> + DEVMETHOD(device_probe, gpioregulator_probe),
>> + DEVMETHOD(device_attach, gpioregulator_attach),
>> +
>> + /* Regdev interface */
>> + DEVMETHOD(regdev_map, regdev_default_ofw_map),
>> +
>> + DEVMETHOD_END
>> +};
>> +
>> +static driver_t gpioregulator_driver = {
>> + "gpioregulator",
>> + gpioregulator_methods,
>> + sizeof(struct gpioregulator_softc),
>> +};
>> +
>> +static devclass_t gpioregulator_devclass;
>> +
>> +EARLY_DRIVER_MODULE(gpioregulator, simplebus, gpioregulator_driver,
>> + gpioregulator_devclass, 0, 0, BUS_PASS_INTERRUPT +
>> BUS_PASS_ORDER_LAST);
>> +MODULE_VERSION(gpioregulator, 1);
>> --
>> 2.16.4
>>
>> _______________________________________________
>> devel mailing list
>> devel at rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
--
--------------------------------------------
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Herr Christian Mauderer
Dornierstr. 4
D-82178 Puchheim
Germany
email: christian.mauderer at embedded-brains.de
Phone: +49-89-18 94 741 - 18
Fax: +49-89-18 94 741 - 08
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