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freebsd-dev/sys/arm/nvidia/as3722_regulators.c
Oleksandr Tymoshenko 217d17bcd3 Clean up OF_getprop_alloc API 
OF_getprop_alloc takes element size argument and returns number of
elements in the property. There are valid use cases for such behavior
but mostly API consumers pass 1 as element size to get string
properties. What API users would expect from OF_getprop_alloc is to be
a combination of malloc + OF_getprop with the same semantic of return
value. This patch modifies API signature to match these expectations.

For the valid use cases with element size != 1 and to reduce
modification scope new OF_getprop_alloc_multi function has been
introduced that behaves the same way OF_getprop_alloc behaved prior to
this patch.

Reviewed by:	ian, manu
Differential Revision:	https://reviews.freebsd.org/D14850
2018-04-08 22:59:34 +00:00

718 lines
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/*-
* Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/gpio.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <sys/sx.h>
#include <machine/bus.h>
#include <dev/extres/regulator/regulator.h>
#include <dev/gpio/gpiobusvar.h>
#include <gnu/dts/include/dt-bindings/mfd/as3722.h>
#include "as3722.h"
MALLOC_DEFINE(M_AS3722_REG, "AS3722 regulator", "AS3722 power regulator");
#define DIV_ROUND_UP(n,d) howmany(n, d)
enum as3722_reg_id {
AS3722_REG_ID_SD0,
AS3722_REG_ID_SD1,
AS3722_REG_ID_SD2,
AS3722_REG_ID_SD3,
AS3722_REG_ID_SD4,
AS3722_REG_ID_SD5,
AS3722_REG_ID_SD6,
AS3722_REG_ID_LDO0,
AS3722_REG_ID_LDO1,
AS3722_REG_ID_LDO2,
AS3722_REG_ID_LDO3,
AS3722_REG_ID_LDO4,
AS3722_REG_ID_LDO5,
AS3722_REG_ID_LDO6,
AS3722_REG_ID_LDO7,
AS3722_REG_ID_LDO9,
AS3722_REG_ID_LDO10,
AS3722_REG_ID_LDO11,
};
/* Regulator HW definition. */
struct reg_def {
intptr_t id; /* ID */
char *name; /* Regulator name */
char *supply_name; /* Source property name */
uint8_t volt_reg;
uint8_t volt_vsel_mask;
uint8_t enable_reg;
uint8_t enable_mask;
uint8_t ext_enable_reg;
uint8_t ext_enable_mask;
struct regulator_range *ranges;
int nranges;
};
struct as3722_reg_sc {
struct regnode *regnode;
struct as3722_softc *base_sc;
struct reg_def *def;
phandle_t xref;
struct regnode_std_param *param;
int ext_control;
int enable_tracking;
int enable_usec;
};
static struct regulator_range as3722_sd016_ranges[] = {
REG_RANGE_INIT(0x00, 0x00, 0, 0),
REG_RANGE_INIT(0x01, 0x5A, 610000, 10000),
};
static struct regulator_range as3722_sd0_lv_ranges[] = {
REG_RANGE_INIT(0x00, 0x00, 0, 0),
REG_RANGE_INIT(0x01, 0x6E, 410000, 10000),
};
static struct regulator_range as3722_sd_ranges[] = {
REG_RANGE_INIT(0x00, 0x00, 0, 0),
REG_RANGE_INIT(0x01, 0x40, 612500, 12500),
REG_RANGE_INIT(0x41, 0x70, 1425000, 25000),
REG_RANGE_INIT(0x71, 0x7F, 2650000, 50000),
};
static struct regulator_range as3722_ldo3_ranges[] = {
REG_RANGE_INIT(0x00, 0x00, 0, 0),
REG_RANGE_INIT(0x01, 0x2D, 620000, 20000),
};
static struct regulator_range as3722_ldo_ranges[] = {
REG_RANGE_INIT(0x00, 0x00, 0, 0),
REG_RANGE_INIT(0x01, 0x24, 825000, 25000),
REG_RANGE_INIT(0x40, 0x7F, 1725000, 25000),
};
static struct reg_def as3722s_def[] = {
{
.id = AS3722_REG_ID_SD0,
.name = "sd0",
.volt_reg = AS3722_SD0_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(0),
.ext_enable_reg = AS3722_ENABLE_CTRL1,
.ext_enable_mask = AS3722_SD0_EXT_ENABLE_MASK,
.ranges = as3722_sd016_ranges,
.nranges = nitems(as3722_sd016_ranges),
},
{
.id = AS3722_REG_ID_SD1,
.name = "sd1",
.volt_reg = AS3722_SD1_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(1),
.ext_enable_reg = AS3722_ENABLE_CTRL1,
.ext_enable_mask = AS3722_SD1_EXT_ENABLE_MASK,
.ranges = as3722_sd_ranges,
.nranges = nitems(as3722_sd_ranges),
},
{
.id = AS3722_REG_ID_SD2,
.name = "sd2",
.supply_name = "vsup-sd2",
.volt_reg = AS3722_SD2_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(2),
.ext_enable_reg = AS3722_ENABLE_CTRL1,
.ext_enable_mask = AS3722_SD2_EXT_ENABLE_MASK,
.ranges = as3722_sd_ranges,
.nranges = nitems(as3722_sd_ranges),
},
{
.id = AS3722_REG_ID_SD3,
.name = "sd3",
.supply_name = "vsup-sd3",
.volt_reg = AS3722_SD3_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(3),
.ext_enable_reg = AS3722_ENABLE_CTRL1,
.ext_enable_mask = AS3722_SD3_EXT_ENABLE_MASK,
.ranges = as3722_sd_ranges,
.nranges = nitems(as3722_sd_ranges),
},
{
.id = AS3722_REG_ID_SD4,
.name = "sd4",
.supply_name = "vsup-sd4",
.volt_reg = AS3722_SD4_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(4),
.ext_enable_reg = AS3722_ENABLE_CTRL2,
.ext_enable_mask = AS3722_SD4_EXT_ENABLE_MASK,
.ranges = as3722_sd_ranges,
.nranges = nitems(as3722_sd_ranges),
},
{
.id = AS3722_REG_ID_SD5,
.name = "sd5",
.supply_name = "vsup-sd5",
.volt_reg = AS3722_SD5_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(5),
.ext_enable_reg = AS3722_ENABLE_CTRL2,
.ext_enable_mask = AS3722_SD5_EXT_ENABLE_MASK,
.ranges = as3722_sd_ranges,
.nranges = nitems(as3722_sd_ranges),
},
{
.id = AS3722_REG_ID_SD6,
.name = "sd6",
.volt_reg = AS3722_SD6_VOLTAGE,
.volt_vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL,
.enable_mask = AS3722_SDN_CTRL(6),
.ext_enable_reg = AS3722_ENABLE_CTRL2,
.ext_enable_mask = AS3722_SD6_EXT_ENABLE_MASK,
.ranges = as3722_sd016_ranges,
.nranges = nitems(as3722_sd016_ranges),
},
{
.id = AS3722_REG_ID_LDO0,
.name = "ldo0",
.supply_name = "vin-ldo0",
.volt_reg = AS3722_LDO0_VOLTAGE,
.volt_vsel_mask = AS3722_LDO0_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO0_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL3,
.ext_enable_mask = AS3722_LDO0_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO1,
.name = "ldo1",
.supply_name = "vin-ldo1-6",
.volt_reg = AS3722_LDO1_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO1_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL3,
.ext_enable_mask = AS3722_LDO1_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO2,
.name = "ldo2",
.supply_name = "vin-ldo2-5-7",
.volt_reg = AS3722_LDO2_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO2_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL3,
.ext_enable_mask = AS3722_LDO2_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO3,
.name = "ldo3",
.supply_name = "vin-ldo3-4",
.volt_reg = AS3722_LDO3_VOLTAGE,
.volt_vsel_mask = AS3722_LDO3_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO3_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL3,
.ext_enable_mask = AS3722_LDO3_EXT_ENABLE_MASK,
.ranges = as3722_ldo3_ranges,
.nranges = nitems(as3722_ldo3_ranges),
},
{
.id = AS3722_REG_ID_LDO4,
.name = "ldo4",
.supply_name = "vin-ldo3-4",
.volt_reg = AS3722_LDO4_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO4_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL4,
.ext_enable_mask = AS3722_LDO4_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO5,
.name = "ldo5",
.supply_name = "vin-ldo2-5-7",
.volt_reg = AS3722_LDO5_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO5_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL4,
.ext_enable_mask = AS3722_LDO5_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO6,
.name = "ldo6",
.supply_name = "vin-ldo1-6",
.volt_reg = AS3722_LDO6_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO6_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL4,
.ext_enable_mask = AS3722_LDO6_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO7,
.name = "ldo7",
.supply_name = "vin-ldo2-5-7",
.volt_reg = AS3722_LDO7_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL0,
.enable_mask = AS3722_LDO7_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL4,
.ext_enable_mask = AS3722_LDO7_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO9,
.name = "ldo9",
.supply_name = "vin-ldo9-10",
.volt_reg = AS3722_LDO9_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL1,
.enable_mask = AS3722_LDO9_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL5,
.ext_enable_mask = AS3722_LDO9_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO10,
.name = "ldo10",
.supply_name = "vin-ldo9-10",
.volt_reg = AS3722_LDO10_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL1,
.enable_mask = AS3722_LDO10_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL5,
.ext_enable_mask = AS3722_LDO10_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
{
.id = AS3722_REG_ID_LDO11,
.name = "ldo11",
.supply_name = "vin-ldo11",
.volt_reg = AS3722_LDO11_VOLTAGE,
.volt_vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDO_CONTROL1,
.enable_mask = AS3722_LDO11_CTRL,
.ext_enable_reg = AS3722_ENABLE_CTRL5,
.ext_enable_mask = AS3722_LDO11_EXT_ENABLE_MASK,
.ranges = as3722_ldo_ranges,
.nranges = nitems(as3722_ldo_ranges),
},
};
struct as3722_regnode_init_def {
struct regnode_init_def reg_init_def;
int ext_control;
int enable_tracking;
};
static int as3722_regnode_init(struct regnode *regnode);
static int as3722_regnode_enable(struct regnode *regnode, bool enable,
int *udelay);
static int as3722_regnode_set_volt(struct regnode *regnode, int min_uvolt,
int max_uvolt, int *udelay);
static int as3722_regnode_get_volt(struct regnode *regnode, int *uvolt);
static regnode_method_t as3722_regnode_methods[] = {
/* Regulator interface */
REGNODEMETHOD(regnode_init, as3722_regnode_init),
REGNODEMETHOD(regnode_enable, as3722_regnode_enable),
REGNODEMETHOD(regnode_set_voltage, as3722_regnode_set_volt),
REGNODEMETHOD(regnode_get_voltage, as3722_regnode_get_volt),
REGNODEMETHOD_END
};
DEFINE_CLASS_1(as3722_regnode, as3722_regnode_class, as3722_regnode_methods,
sizeof(struct as3722_reg_sc), regnode_class);
static int
as3722_read_sel(struct as3722_reg_sc *sc, uint8_t *sel)
{
int rv;
rv = RD1(sc->base_sc, sc->def->volt_reg, sel);
if (rv != 0)
return (rv);
*sel &= sc->def->volt_vsel_mask;
*sel >>= ffs(sc->def->volt_vsel_mask) - 1;
return (0);
}
static int
as3722_write_sel(struct as3722_reg_sc *sc, uint8_t sel)
{
int rv;
sel <<= ffs(sc->def->volt_vsel_mask) - 1;
sel &= sc->def->volt_vsel_mask;
rv = RM1(sc->base_sc, sc->def->volt_reg,
sc->def->volt_vsel_mask, sel);
if (rv != 0)
return (rv);
return (rv);
}
static bool
as3722_sd0_is_low_voltage(struct as3722_reg_sc *sc)
{
uint8_t val;
int rv;
rv = RD1(sc->base_sc, AS3722_FUSE7, &val);
if (rv != 0)
return (rv);
return (val & AS3722_FUSE7_SD0_LOW_VOLTAGE ? true : false);
}
static int
as3722_reg_extreg_setup(struct as3722_reg_sc *sc, int ext_pwr_ctrl)
{
uint8_t val;
int rv;
val = ext_pwr_ctrl << (ffs(sc->def->ext_enable_mask) - 1);
rv = RM1(sc->base_sc, sc->def->ext_enable_reg,
sc->def->ext_enable_mask, val);
return (rv);
}
static int
as3722_reg_enable(struct as3722_reg_sc *sc)
{
int rv;
rv = RM1(sc->base_sc, sc->def->enable_reg,
sc->def->enable_mask, sc->def->enable_mask);
return (rv);
}
static int
as3722_reg_disable(struct as3722_reg_sc *sc)
{
int rv;
rv = RM1(sc->base_sc, sc->def->enable_reg,
sc->def->enable_mask, 0);
return (rv);
}
static int
as3722_regnode_init(struct regnode *regnode)
{
struct as3722_reg_sc *sc;
int rv;
sc = regnode_get_softc(regnode);
sc->enable_usec = 500;
if (sc->def->id == AS3722_REG_ID_SD0) {
if (as3722_sd0_is_low_voltage(sc)) {
sc->def->ranges = as3722_sd0_lv_ranges;
sc->def->nranges = nitems(as3722_sd0_lv_ranges);
}
sc->enable_usec = 600;
} else if (sc->def->id == AS3722_REG_ID_LDO3) {
if (sc->enable_tracking) {
rv = RM1(sc->base_sc, sc->def->volt_reg,
AS3722_LDO3_MODE_MASK,
AS3722_LDO3_MODE_PMOS_TRACKING);
if (rv < 0) {
device_printf(sc->base_sc->dev,
"LDO3 tracking failed: %d\n", rv);
return (rv);
}
}
}
if (sc->ext_control) {
rv = as3722_reg_enable(sc);
if (rv < 0) {
device_printf(sc->base_sc->dev,
"Failed to enable %s regulator: %d\n",
sc->def->name, rv);
return (rv);
}
rv = as3722_reg_extreg_setup(sc, sc->ext_control);
if (rv < 0) {
device_printf(sc->base_sc->dev,
"%s ext control failed: %d", sc->def->name, rv);
return (rv);
}
}
return (0);
}
static void
as3722_fdt_parse(struct as3722_softc *sc, phandle_t node, struct reg_def *def,
struct as3722_regnode_init_def *init_def)
{
int rv;
phandle_t parent, supply_node;
char prop_name[64]; /* Maximum OFW property name length. */
rv = regulator_parse_ofw_stdparam(sc->dev, node,
&init_def->reg_init_def);
rv = OF_getencprop(node, "ams,ext-control", &init_def->ext_control,
sizeof(init_def->ext_control));
if (rv <= 0)
init_def->ext_control = 0;
if (init_def->ext_control > 3) {
device_printf(sc->dev,
"Invalid value for ams,ext-control property: %d\n",
init_def->ext_control);
init_def->ext_control = 0;
}
if (OF_hasprop(node, "ams,enable-tracking"))
init_def->enable_tracking = 1;
/* Get parent supply. */
if (def->supply_name == NULL)
return;
parent = OF_parent(node);
snprintf(prop_name, sizeof(prop_name), "%s-supply",
def->supply_name);
rv = OF_getencprop(parent, prop_name, &supply_node,
sizeof(supply_node));
if (rv <= 0)
return;
supply_node = OF_node_from_xref(supply_node);
rv = OF_getprop_alloc(supply_node, "regulator-name",
(void **)&init_def->reg_init_def.parent_name);
if (rv <= 0)
init_def->reg_init_def.parent_name = NULL;
}
static struct as3722_reg_sc *
as3722_attach(struct as3722_softc *sc, phandle_t node, struct reg_def *def)
{
struct as3722_reg_sc *reg_sc;
struct as3722_regnode_init_def init_def;
struct regnode *regnode;
bzero(&init_def, sizeof(init_def));
as3722_fdt_parse(sc, node, def, &init_def);
init_def.reg_init_def.id = def->id;
init_def.reg_init_def.ofw_node = node;
regnode = regnode_create(sc->dev, &as3722_regnode_class,
&init_def.reg_init_def);
if (regnode == NULL) {
device_printf(sc->dev, "Cannot create regulator.\n");
return (NULL);
}
reg_sc = regnode_get_softc(regnode);
/* Init regulator softc. */
reg_sc->regnode = regnode;
reg_sc->base_sc = sc;
reg_sc->def = def;
reg_sc->xref = OF_xref_from_node(node);
reg_sc->param = regnode_get_stdparam(regnode);
reg_sc->ext_control = init_def.ext_control;
reg_sc->enable_tracking = init_def.enable_tracking;
regnode_register(regnode);
if (bootverbose) {
int volt, rv;
regnode_topo_slock();
rv = regnode_get_voltage(regnode, &volt);
if (rv == ENODEV) {
device_printf(sc->dev,
" Regulator %s: parent doesn't exist yet.\n",
regnode_get_name(regnode));
} else if (rv != 0) {
device_printf(sc->dev,
" Regulator %s: voltage: INVALID!!!\n",
regnode_get_name(regnode));
} else {
device_printf(sc->dev,
" Regulator %s: voltage: %d uV\n",
regnode_get_name(regnode), volt);
}
regnode_topo_unlock();
}
return (reg_sc);
}
int
as3722_regulator_attach(struct as3722_softc *sc, phandle_t node)
{
struct as3722_reg_sc *reg;
phandle_t child, rnode;
int i;
rnode = ofw_bus_find_child(node, "regulators");
if (rnode <= 0) {
device_printf(sc->dev, " Cannot find regulators subnode\n");
return (ENXIO);
}
sc->nregs = nitems(as3722s_def);
sc->regs = malloc(sizeof(struct as3722_reg_sc *) * sc->nregs,
M_AS3722_REG, M_WAITOK | M_ZERO);
/* Attach all known regulators if exist in DT. */
for (i = 0; i < sc->nregs; i++) {
child = ofw_bus_find_child(rnode, as3722s_def[i].name);
if (child == 0) {
if (bootverbose)
device_printf(sc->dev,
"Regulator %s missing in DT\n",
as3722s_def[i].name);
continue;
}
reg = as3722_attach(sc, child, as3722s_def + i);
if (reg == NULL) {
device_printf(sc->dev, "Cannot attach regulator: %s\n",
as3722s_def[i].name);
return (ENXIO);
}
sc->regs[i] = reg;
}
return (0);
}
int
as3722_regulator_map(device_t dev, phandle_t xref, int ncells,
pcell_t *cells, int *num)
{
struct as3722_softc *sc;
int i;
sc = device_get_softc(dev);
for (i = 0; i < sc->nregs; i++) {
if (sc->regs[i] == NULL)
continue;
if (sc->regs[i]->xref == xref) {
*num = sc->regs[i]->def->id;
return (0);
}
}
return (ENXIO);
}
static int
as3722_regnode_enable(struct regnode *regnode, bool val, int *udelay)
{
struct as3722_reg_sc *sc;
int rv;
sc = regnode_get_softc(regnode);
if (val)
rv = as3722_reg_enable(sc);
else
rv = as3722_reg_disable(sc);
*udelay = sc->enable_usec;
return (rv);
}
static int
as3722_regnode_set_volt(struct regnode *regnode, int min_uvolt, int max_uvolt,
int *udelay)
{
struct as3722_reg_sc *sc;
uint8_t sel;
int rv;
sc = regnode_get_softc(regnode);
*udelay = 0;
rv = regulator_range_volt_to_sel8(sc->def->ranges, sc->def->nranges,
min_uvolt, max_uvolt, &sel);
if (rv != 0)
return (rv);
rv = as3722_write_sel(sc, sel);
return (rv);
}
static int
as3722_regnode_get_volt(struct regnode *regnode, int *uvolt)
{
struct as3722_reg_sc *sc;
uint8_t sel;
int rv;
sc = regnode_get_softc(regnode);
rv = as3722_read_sel(sc, &sel);
if (rv != 0)
return (rv);
/* LDO6 have bypass. */
if (sc->def->id == AS3722_REG_ID_LDO6 && sel == AS3722_LDO6_SEL_BYPASS)
return (ENOENT);
rv = regulator_range_sel8_to_volt(sc->def->ranges, sc->def->nranges,
sel, uvolt);
return (rv);
}
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