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