Hi Christian, Yes, with this patch my build works again. Thank you very much.
Best regards, Jan > -----Ursprüngliche Nachricht----- > Von: Christian Mauderer [mailto:christian.maude...@embedded-brains.de] > Gesendet: Freitag, 17. April 2020 09:17 > An: Sommer, Jan; devel@rtems.org > Betreff: Re: [PATCH rtems-libbsd v2 06/14] regulator: Import from FreeBSD. > > Hello Jan, > > can you please try this patch: > > https://lists.rtems.org/pipermail/devel/2020-April/059419.html > > I've still seen quite some linker errors in if_em.c. But as far as I can > tell they doesn't seem to be related. Are they? > > Best regards > > Christian > > On 17/04/2020 08:17, Christian Mauderer wrote: > > Hello Jan, > > > > On 16/04/2020 22:27, jan.som...@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-boun...@rtems.org] Im Auftrag von Christian > >>> Mauderer > >>> Gesendet: Dienstag, 14. April 2020 16:51 > >>> An: devel@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 <m...@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 <m...@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 <m...@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 <m...@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 <m...@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 <jmcne...@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@rtems.org > >>> http://lists.rtems.org/mailman/listinfo/devel > > > > -- > -------------------------------------------- > embedded brains GmbH > Herr Christian Mauderer > Dornierstr. 4 > D-82178 Puchheim > Germany > email: christian.maude...@embedded-brains.de > Phone: +49-89-18 94 741 - 18 > Fax: +49-89-18 94 741 - 08 > PGP: Public key available on request. > > Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
