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Add a driver for ACT8846 used as PMIC for RK3288 SoC.

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This commit is contained in:
Michal Meloun 2020-12-04 14:57:12 +00:00
parent 454f1fdec1
commit 4388c70c08
4 changed files with 914 additions and 0 deletions
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258
sys/dev/iicbus/pmic/act8846.c Normal file
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
*
* 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("$FreeBSD$");
/*
* ACT8846 PMIC driver
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.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/fdt/fdt_pinctrl.h>
#include <dev/iicbus/iiconf.h>
#include <dev/iicbus/iicbus.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/iicbus/pmic/act8846.h>
#include "regdev_if.h"
static struct ofw_compat_data compat_data[] = {
{"active-semi,act8846", 1},
{NULL, 0}
};
#define LOCK(_sc) sx_xlock(&(_sc)->lock)
#define UNLOCK(_sc) sx_xunlock(&(_sc)->lock)
#define LOCK_INIT(_sc) sx_init(&(_sc)->lock, "act8846")
#define LOCK_DESTROY(_sc) sx_destroy(&(_sc)->lock);
#define ASSERT_LOCKED(_sc) sx_assert(&(_sc)->lock, SA_XLOCKED);
#define ASSERT_UNLOCKED(_sc) sx_assert(&(_sc)->lock, SA_UNLOCKED);
/*
* Raw register access function.
*/
int
act8846_read(struct act8846_softc *sc, uint8_t reg, uint8_t *val)
{
uint8_t addr;
int rv;
struct iic_msg msgs[2] = {
{0, IIC_M_WR, 1, &addr},
{0, IIC_M_RD, 1, val},
};
msgs[0].slave = sc->bus_addr;
msgs[1].slave = sc->bus_addr;
addr = reg;
rv = iicbus_transfer_excl(sc->dev, msgs, 2, IIC_INTRWAIT);
if (rv != 0) {
device_printf(sc->dev,
"Error when reading reg 0x%02X, rv: %d\n", reg, rv);
return (EIO);
}
return (0);
}
int act8846_read_buf(struct act8846_softc *sc, uint8_t reg, uint8_t *buf,
size_t size)
{
uint8_t addr;
int rv;
struct iic_msg msgs[2] = {
{0, IIC_M_WR, 1, &addr},
{0, IIC_M_RD, size, buf},
};
msgs[0].slave = sc->bus_addr;
msgs[1].slave = sc->bus_addr;
addr = reg;
rv = iicbus_transfer_excl(sc->dev, msgs, 2, IIC_INTRWAIT);
if (rv != 0) {
device_printf(sc->dev,
"Error when reading reg 0x%02X, rv: %d\n", reg, rv);
return (EIO);
}
return (0);
}
int
act8846_write(struct act8846_softc *sc, uint8_t reg, uint8_t val)
{
uint8_t data[2];
int rv;
struct iic_msg msgs[1] = {
{0, IIC_M_WR, 2, data},
};
msgs[0].slave = sc->bus_addr;
data[0] = reg;
data[1] = val;
rv = iicbus_transfer_excl(sc->dev, msgs, 1, IIC_INTRWAIT);
if (rv != 0) {
device_printf(sc->dev,
"Error when writing reg 0x%02X, rv: %d\n", reg, rv);
return (EIO);
}
return (0);
}
int act8846_write_buf(struct act8846_softc *sc, uint8_t reg, uint8_t *buf,
size_t size)
{
uint8_t data[1];
int rv;
struct iic_msg msgs[2] = {
{0, IIC_M_WR, 1, data},
{0, IIC_M_WR | IIC_M_NOSTART, size, buf},
};
msgs[0].slave = sc->bus_addr;
msgs[1].slave = sc->bus_addr;
data[0] = reg;
rv = iicbus_transfer_excl(sc->dev, msgs, 2, IIC_INTRWAIT);
if (rv != 0) {
device_printf(sc->dev,
"Error when writing reg 0x%02X, rv: %d\n", reg, rv);
return (EIO);
}
return (0);
}
int
act8846_modify(struct act8846_softc *sc, uint8_t reg, uint8_t clear, uint8_t set)
{
uint8_t val;
int rv;
rv = act8846_read(sc, reg, &val);
if (rv != 0)
return (rv);
val &= ~clear;
val |= set;
rv = act8846_write(sc, reg, val);
if (rv != 0)
return (rv);
return (0);
}
static int
act8846_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, "ACT8846 PMIC");
return (BUS_PROBE_DEFAULT);
}
static int
act8846_attach(device_t dev)
{
struct act8846_softc *sc;
int rv;
phandle_t node;
sc = device_get_softc(dev);
sc->dev = dev;
sc->bus_addr = iicbus_get_addr(dev);
node = ofw_bus_get_node(sc->dev);
rv = 0;
LOCK_INIT(sc);
rv = act8846_regulator_attach(sc, node);
if (rv != 0)
goto fail;
return (bus_generic_attach(dev));
fail:
LOCK_DESTROY(sc);
return (rv);
}
static int
act8846_detach(device_t dev)
{
struct act8846_softc *sc;
sc = device_get_softc(dev);
LOCK_DESTROY(sc);
return (bus_generic_detach(dev));
}
static device_method_t act8846_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, act8846_probe),
DEVMETHOD(device_attach, act8846_attach),
DEVMETHOD(device_detach, act8846_detach),
/* Regdev interface */
DEVMETHOD(regdev_map, act8846_regulator_map),
DEVMETHOD_END
};
static devclass_t act8846_devclass;
static DEFINE_CLASS_0(act8846_pmu, act8846_driver, act8846_methods,
sizeof(struct act8846_softc));
EARLY_DRIVER_MODULE(act8846_pmic, iicbus, act8846_driver, act8846_devclass,
NULL, NULL, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LAST);
MODULE_VERSION(act8846_pmic, 1);
MODULE_DEPEND(act8846_pmic, iicbus, IICBUS_MINVER, IICBUS_PREFVER,
IICBUS_MAXVER);
IICBUS_FDT_PNP_INFO(compat_data);

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sys/dev/iicbus/pmic/act8846.h Normal file
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _ACT8846_H_
#define _ACT8846_H_
#include <dev/iicbus/pmic/act8846_reg.h>
struct act8846_reg_sc;
struct act8846_gpio_pin;
struct act8846_softc {
device_t dev;
struct sx lock;
int bus_addr;
/* Regulators. */
struct act8846_reg_sc **regs;
int nregs;
};
#define RD1(sc, reg, val) act8846_read(sc, reg, val)
#define WR1(sc, reg, val) act8846_write(sc, reg, val)
#define RM1(sc, reg, clr, set) act8846_modify(sc, reg, clr, set)
int act8846_read(struct act8846_softc *sc, uint8_t reg, uint8_t *val);
int act8846_write(struct act8846_softc *sc, uint8_t reg, uint8_t val);
int act8846_modify(struct act8846_softc *sc, uint8_t reg, uint8_t clear,
uint8_t set);
int act8846_read_buf(struct act8846_softc *sc, uint8_t reg, uint8_t *buf,
size_t size);
int act8846_write_buf(struct act8846_softc *sc, uint8_t reg, uint8_t *buf,
size_t size);
/* Regulators */
int act8846_regulator_attach(struct act8846_softc *sc, phandle_t node);
int act8846_regulator_map(device_t dev, phandle_t xref, int ncells,
pcell_t *cells, int *num);
#endif /* _ACT8846_H_ */

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sys/dev/iicbus/pmic/act8846_reg.h Normal file
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
*
* 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 _ACT8846_REG_H_
#define _ACT8846_REG_H_
/* ACT8846 registers. */
#define ACT8846_SYS0 0x00
#define ACT8846_SYS1 0x01
#define ACT8846_REG1_CTRL 0x12
#define ACT8846_REG2_VSET0 0x20
#define ACT8846_REG2_VSET1 0x21
#define ACT8846_REG2_CTRL 0x22
#define ACT8846_REG3_VSET0 0x30
#define ACT8846_REG3_VSET1 0x31
#define ACT8846_REG3_CTRL 0x32
#define ACT8846_REG4_VSET0 0x40
#define ACT8846_REG4_VSET1 0x41
#define ACT8846_REG4_CTRL 0x42
#define ACT8846_REG5_VSET 0x50
#define ACT8846_REG5_CTRL 0x51
#define ACT8846_REG6_VSET 0x58
#define ACT8846_REG6_CTRL 0x59
#define ACT8846_REG7_VSET 0x60
#define ACT8846_REG7_CTRL 0x61
#define ACT8846_REG8_VSET 0x68
#define ACT8846_REG8_CTRL 0x69
#define ACT8846_REG9_VSET 0x70
#define ACT8846_REG9_CTRL 0x71
#define ACT8846_REG10_VSET 0x80
#define ACT8846_REG10_CTRL 0x81
#define ACT8846_REG11_VSET 0x90
#define ACT8846_REG11_CTRL 0x91
#define ACT8846_REG12_VSET 0xa0
#define ACT8846_REG12_CTRL 0xa1
#define ACT8846_REG13_CTRL 0xb1
#define ACT8846_PB0 0xc0
#define ACT8846_PB1 0xc1
#define ACT8846_PB2 0xc2
#define ACT8846_PB3 0xc3
#define ACT8846_PB4 0xc4
#define ACT8846_GPIO6 0xe3
#define ACT8846_GPIO5 0xe4
#define ACT8846_GPIO3 0xf4
#define ACT8846_GPIO4 0xf5
/* Common REGxx_CTRL bits */
#define ACT8846_CTRL_ENA 0x80
#define ACT8846_CTRL_OK 0x01
/* Common REGxx_VSEL bits */
#define ACT8846_VSEL_MASK 0x3f
#endif /* _ACT8846_REG_H_ */

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sys/dev/iicbus/pmic/act8846_regulator.c Normal file
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <dev/iicbus/iiconf.h>
#include <dev/iicbus/iicbus.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/extres/regulator/regulator.h>
#include <dev/iicbus/pmic/act8846.h>
#include "regdev_if.h"
MALLOC_DEFINE(M_ACT8846_REG, "ACT8846 regulator", "ACT8846 power regulator");
#if 0
#define dprintf(sc, format, arg...)
device_printf(sc->base_sc->dev, "%s: " format, __func__, arg) */
#else
#define dprintf(sc, format, arg...)
#endif
enum act8846_reg_id {
ACT8846_REG_ID_REG1,
ACT8846_REG_ID_REG2,
ACT8846_REG_ID_REG3,
ACT8846_REG_ID_REG4,
ACT8846_REG_ID_REG5,
ACT8846_REG_ID_REG6,
ACT8846_REG_ID_REG7,
ACT8846_REG_ID_REG8,
ACT8846_REG_ID_REG9,
ACT8846_REG_ID_REG10,
ACT8846_REG_ID_REG11,
ACT8846_REG_ID_REG12,
ACT8846_REG_ID_REG13,
};
struct act8846_regdef {
intptr_t id; /* ID */
char *name; /* Regulator name */
char *supply_name; /* Source property name */
uint8_t enable_reg;
uint8_t enable_mask;
uint8_t voltage_reg;
uint8_t voltage_mask;
struct regulator_range *ranges;
int nranges;
};
struct act8846_softc;
struct act8846_reg_sc {
struct regnode *regnode;
struct act8846_softc *base_sc;
struct act8846_regdef *def;
phandle_t xref;
struct regnode_std_param *param;
};
static struct regulator_range act8846_ranges[] = {
REG_RANGE_INIT( 0, 23, 600000, 25000),
REG_RANGE_INIT( 24, 47, 1200000, 50000),
REG_RANGE_INIT( 48, 64, 2400000, 100000),
};
static struct act8846_regdef act8846_regdefs[] = {
{
.id = ACT8846_REG_ID_REG1,
.name = "REG1",
.supply_name = "vp1",
.enable_reg = ACT8846_REG1_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
},
{
.id = ACT8846_REG_ID_REG2,
.name = "REG2",
.supply_name = "vp2",
.enable_reg = ACT8846_REG2_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG2_VSET0,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG3,
.name = "REG3",
.supply_name = "vp3",
.enable_reg = ACT8846_REG3_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG3_VSET0,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG4,
.name = "REG4",
.supply_name = "vp4",
.enable_reg = ACT8846_REG4_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG4_VSET0,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG5,
.name = "REG5",
.supply_name = "inl1",
.enable_reg = ACT8846_REG5_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG5_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG6,
.name = "REG6",
.supply_name = "inl1",
.enable_reg = ACT8846_REG6_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG6_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG7,
.name = "REG7",
.supply_name = "inl1",
.enable_reg = ACT8846_REG7_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG7_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG8,
.name = "REG8",
.supply_name = "inl2",
.enable_reg = ACT8846_REG8_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG8_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG9,
.name = "REG9",
.supply_name = "inl2",
.enable_reg = ACT8846_REG9_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG9_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG10,
.name = "REG10",
.supply_name = "inl3",
.enable_reg = ACT8846_REG10_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG10_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG11,
.name = "REG11",
.supply_name = "inl3",
.enable_reg = ACT8846_REG11_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG11_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG12,
.name = "REG12",
.supply_name = "inl3",
.enable_reg = ACT8846_REG12_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
.voltage_reg = ACT8846_REG12_VSET,
.voltage_mask = ACT8846_VSEL_MASK,
.ranges = act8846_ranges,
.nranges = nitems(act8846_ranges),
},
{
.id = ACT8846_REG_ID_REG13,
.name = "REG13",
.supply_name = "inl1",
.enable_reg = ACT8846_REG13_CTRL,
.enable_mask = ACT8846_CTRL_ENA,
},
};
static int
act8846_read_sel(struct act8846_reg_sc *sc, uint8_t *sel)
{
int rv;
rv = RD1(sc->base_sc, sc->def->voltage_reg, sel);
if (rv != 0)
return (rv);
*sel &= sc->def->voltage_mask;
*sel >>= ffs(sc->def->voltage_mask) - 1;
return (0);
}
static int
act8846_write_sel(struct act8846_reg_sc *sc, uint8_t sel)
{
int rv;
sel <<= ffs(sc->def->voltage_mask) - 1;
sel &= sc->def->voltage_mask;
rv = RM1(sc->base_sc, sc->def->voltage_reg,
sc->def->voltage_mask, sel);
if (rv != 0)
return (rv);
return (rv);
}
static int
act8846_regnode_init(struct regnode *regnode)
{
return (0);
}
static int
act8846_regnode_enable(struct regnode *regnode, bool enable, int *udelay)
{
struct act8846_reg_sc *sc;
int rv;
sc = regnode_get_softc(regnode);
dprintf(sc, "%sabling regulator %s\n",
enable ? "En" : "Dis",
sc->def->name);
rv = RM1(sc->base_sc, sc->def->enable_reg,
sc->def->enable_mask, enable ? sc->def->enable_mask: 0);
*udelay = sc->param->enable_delay;
return (rv);
}
static int
act8846_regnode_set_voltage(struct regnode *regnode, int min_uvolt,
int max_uvolt, int *udelay)
{
struct act8846_reg_sc *sc;
uint8_t sel;
int uvolt, rv;
sc = regnode_get_softc(regnode);
if (sc->def->ranges == NULL)
return (ENXIO);
dprintf(sc, "Setting %s to %d<->%d uvolts\n",
sc->def->name,
min_uvolt,
max_uvolt);
rv = regulator_range_volt_to_sel8(sc->def->ranges, sc->def->nranges,
min_uvolt, max_uvolt, &sel);
if (rv != 0)
return (rv);
*udelay = sc->param->ramp_delay;
rv = act8846_write_sel(sc, sel);
act8846_read_sel(sc, &sel);
regulator_range_sel8_to_volt(sc->def->ranges, sc->def->nranges,
sel, &uvolt);
dprintf(sc, "Regulator %s set to %d uvolt\n", sc->def->name,
uvolt);
return (rv);
}
static int
act8846_regnode_get_voltage(struct regnode *regnode, int *uvolt)
{
struct act8846_reg_sc *sc;
uint8_t sel;
int rv;
sc = regnode_get_softc(regnode);
if (sc->def->ranges == NULL) {
if (sc->def->id == ACT8846_REG_ID_REG13) {
*uvolt = 1800000;
return (0);
}
return (ENXIO);
}
rv = act8846_read_sel(sc, &sel);
if (rv != 0)
return (rv);
rv = regulator_range_sel8_to_volt(sc->def->ranges, sc->def->nranges,
sel, uvolt);
dprintf(sc, "Regulator %s is at %d uvolt\n", sc->def->name,
*uvolt);
return (rv);
}
static regnode_method_t act8846_regnode_methods[] = {
/* Regulator interface */
REGNODEMETHOD(regnode_init, act8846_regnode_init),
REGNODEMETHOD(regnode_enable, act8846_regnode_enable),
REGNODEMETHOD(regnode_set_voltage, act8846_regnode_set_voltage),
REGNODEMETHOD(regnode_get_voltage, act8846_regnode_get_voltage),
REGNODEMETHOD_END
};
DEFINE_CLASS_1(act8846_regnode, act8846_regnode_class, act8846_regnode_methods,
sizeof(struct act8846_reg_sc), regnode_class);
static int
act8846_fdt_parse(struct act8846_softc *sc, phandle_t pnode, phandle_t node,
struct act8846_regdef *def, struct regnode_init_def *init_def)
{
int rv;
phandle_t supply_node;
char prop_name[64]; /* Maximum OFW property name length. */
rv = regulator_parse_ofw_stdparam(sc->dev, node, init_def);
/* Get parent supply. */
if (def->supply_name == NULL)
return (0);
snprintf(prop_name, sizeof(prop_name), "%s-supply",
def->supply_name);
rv = OF_getencprop(pnode, prop_name, &supply_node,
sizeof(supply_node));
if (rv <= 0)
return (rv);
supply_node = OF_node_from_xref(supply_node);
rv = OF_getprop_alloc(supply_node, "regulator-name",
(void **)&init_def->parent_name);
if (rv <= 0)
init_def->parent_name = NULL;
return (0);
}
static struct act8846_reg_sc *
act8846_attach(struct act8846_softc *sc, phandle_t pnode, phandle_t node,
struct act8846_regdef *def)
{
struct act8846_reg_sc *reg_sc;
struct regnode_init_def initdef;
struct regnode *regnode;
memset(&initdef, 0, sizeof(initdef));
if (act8846_fdt_parse(sc, pnode, node, def, &initdef) != 0) {
device_printf(sc->dev, "cannot parse FDT data for regulator\n");
return (NULL);
}
initdef.id = def->id;
initdef.ofw_node = node;
regnode = regnode_create(sc->dev, &act8846_regnode_class, &initdef);
if (regnode == NULL) {
device_printf(sc->dev, "cannot create regulator\n");
return (NULL);
}
reg_sc = regnode_get_softc(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);
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
act8846_regulator_attach(struct act8846_softc *sc, phandle_t node)
{
struct act8846_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);
}
/* ACT8846 specific definitio. */
sc->nregs = nitems(act8846_regdefs);
sc->regs = malloc(sizeof(struct act8846_reg_sc *) * sc->nregs,
M_ACT8846_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, act8846_regdefs[i].name);
if (child == 0) {
if (bootverbose)
device_printf(sc->dev,
"Regulator %s missing in DT\n",
act8846_regdefs[i].name);
continue;
}
reg = act8846_attach(sc, node, child, act8846_regdefs + i);
if (reg == NULL) {
device_printf(sc->dev, "Cannot attach regulator: %s\n",
act8846_regdefs[i].name);
return (ENXIO);
}
sc->regs[i] = reg;
}
return (0);
}
int
act8846_regulator_map(device_t dev, phandle_t xref, int ncells,
pcell_t *cells, int *num)
{
struct act8846_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);
}