A distinct number of double-semicolons have ended up in FreeBSD. Take a pass at getting rid of many of these harmless typos. Reviewed by: emaste, rrs Pull Request: https://github.com/freebsd/freebsd-src/pull/609 Differential Revision: https://reviews.freebsd.org/D31716
507 lines
12 KiB
C
507 lines
12 KiB
C
/*-
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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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/*
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* MAX77620 PMIC driver
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*/
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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/gpio.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <sys/sx.h>
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#include <machine/bus.h>
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#include <dev/extres/regulator/regulator.h>
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#include <dev/fdt/fdt_pinctrl.h>
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#include <dev/gpio/gpiobusvar.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 <dt-bindings/mfd/max77620.h>
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#include "clock_if.h"
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#include "regdev_if.h"
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#include "max77620.h"
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static struct ofw_compat_data compat_data[] = {
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{"maxim,max77620", 1},
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{NULL, 0},
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};
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#define LOCK(_sc) sx_xlock(&(_sc)->lock)
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#define UNLOCK(_sc) sx_xunlock(&(_sc)->lock)
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#define LOCK_INIT(_sc) sx_init(&(_sc)->lock, "max77620")
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#define LOCK_DESTROY(_sc) sx_destroy(&(_sc)->lock);
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#define ASSERT_LOCKED(_sc) sx_assert(&(_sc)->lock, SA_XLOCKED);
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#define ASSERT_UNLOCKED(_sc) sx_assert(&(_sc)->lock, SA_UNLOCKED);
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#define MAX77620_DEVICE_ID 0x0C
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/*
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* Raw register access function.
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*/
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int
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max77620_read(struct max77620_softc *sc, uint8_t reg, uint8_t *val)
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{
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uint8_t addr;
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int rv;
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struct iic_msg msgs[2] = {
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{0, IIC_M_WR, 1, &addr},
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{0, IIC_M_RD, 1, val},
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};
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msgs[0].slave = sc->bus_addr;
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msgs[1].slave = sc->bus_addr;
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addr = reg;
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rv = iicbus_transfer(sc->dev, msgs, 2);
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if (rv != 0) {
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device_printf(sc->dev,
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"Error when reading reg 0x%02X, rv: %d\n", reg, rv);
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return (EIO);
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}
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return (0);
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}
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int max77620_read_buf(struct max77620_softc *sc, uint8_t reg, uint8_t *buf,
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size_t size)
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{
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uint8_t addr;
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int rv;
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struct iic_msg msgs[2] = {
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{0, IIC_M_WR, 1, &addr},
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{0, IIC_M_RD, size, buf},
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};
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msgs[0].slave = sc->bus_addr;
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msgs[1].slave = sc->bus_addr;
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addr = reg;
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rv = iicbus_transfer(sc->dev, msgs, 2);
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if (rv != 0) {
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device_printf(sc->dev,
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"Error when reading reg 0x%02X, rv: %d\n", reg, rv);
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return (EIO);
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}
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return (0);
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}
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int
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max77620_write(struct max77620_softc *sc, uint8_t reg, uint8_t val)
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{
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uint8_t data[2];
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int rv;
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struct iic_msg msgs[1] = {
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{0, IIC_M_WR, 2, data},
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};
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msgs[0].slave = sc->bus_addr;
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data[0] = reg;
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data[1] = val;
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rv = iicbus_transfer(sc->dev, msgs, 1);
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if (rv != 0) {
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device_printf(sc->dev,
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"Error when writing reg 0x%02X, rv: %d\n", reg, rv);
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return (EIO);
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}
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return (0);
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}
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int
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max77620_write_buf(struct max77620_softc *sc, uint8_t reg, uint8_t *buf,
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size_t size)
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{
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uint8_t data[1];
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int rv;
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struct iic_msg msgs[2] = {
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{0, IIC_M_WR, 1, data},
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{0, IIC_M_WR | IIC_M_NOSTART, size, buf},
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};
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msgs[0].slave = sc->bus_addr;
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msgs[1].slave = sc->bus_addr;
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data[0] = reg;
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rv = iicbus_transfer(sc->dev, msgs, 2);
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if (rv != 0) {
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device_printf(sc->dev,
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"Error when writing reg 0x%02X, rv: %d\n", reg, rv);
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return (EIO);
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}
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return (0);
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}
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int
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max77620_modify(struct max77620_softc *sc, uint8_t reg, uint8_t clear,
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uint8_t set)
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{
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uint8_t val;
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int rv;
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rv = max77620_read(sc, reg, &val);
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if (rv != 0)
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return (rv);
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val &= ~clear;
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val |= set;
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rv = max77620_write(sc, reg, val);
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if (rv != 0)
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return (rv);
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return (0);
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}
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static int
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max77620_parse_fps(struct max77620_softc *sc, int id, phandle_t node)
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{
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int val;
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if (OF_getencprop(node, "maxim,shutdown-fps-time-period-us", &val,
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sizeof(val)) >= 0) {
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val = min(val, MAX77620_FPS_PERIOD_MAX_US);
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val = max(val, MAX77620_FPS_PERIOD_MIN_US);
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sc->shutdown_fps[id] = val;
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}
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if (OF_getencprop(node, "maxim,suspend-fps-time-period-us", &val,
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sizeof(val)) >= 0) {
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val = min(val, MAX77620_FPS_PERIOD_MAX_US);
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val = max(val, MAX77620_FPS_PERIOD_MIN_US);
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sc->suspend_fps[id] = val;
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}
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if (OF_getencprop(node, "maxim,fps-event-source", &val,
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sizeof(val)) >= 0) {
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if (val > 2) {
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device_printf(sc->dev, "Invalid 'fps-event-source' "
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"value: %d\n", val);
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return (EINVAL);
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}
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sc->event_source[id] = val;
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}
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return (0);
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}
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static int
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max77620_parse_fdt(struct max77620_softc *sc, phandle_t node)
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{
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phandle_t fpsnode;
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char fps_name[6];
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int i, rv;
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for (i = 0; i < MAX77620_FPS_COUNT; i++) {
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sc->shutdown_fps[i] = -1;
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sc->suspend_fps[i] = -1;
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sc->event_source[i] = -1;
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}
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fpsnode = ofw_bus_find_child(node, "fps");
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if (fpsnode > 0) {
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for (i = 0; i < MAX77620_FPS_COUNT; i++) {
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sprintf(fps_name, "fps%d", i);
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node = ofw_bus_find_child(node, fps_name);
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if (node <= 0)
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continue;
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rv = max77620_parse_fps(sc, i, node);
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if (rv != 0)
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return (rv);
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}
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}
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return (0);
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}
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static int
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max77620_get_version(struct max77620_softc *sc)
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{
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uint8_t buf[6];
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int i;
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int rv;
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/* Verify ID string (5 bytes ). */
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for (i = 0; i <= 6; i++) {
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rv = RD1(sc, MAX77620_REG_CID0 + i , buf + i);
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if (rv != 0) {
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device_printf(sc->dev, "Cannot read chip ID: %d\n", rv);
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return (ENXIO);
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}
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}
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if (bootverbose) {
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device_printf(sc->dev,
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" ID: [0x%02X, 0x%02X, 0x%02X, 0x%02X]\n",
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buf[0], buf[1], buf[2], buf[3]);
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}
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device_printf(sc->dev, " MAX77620 version - OTP: 0x%02X, ES: 0x%02X\n",
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buf[4], buf[5]);
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return (0);
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}
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static uint8_t
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max77620_encode_fps_period(struct max77620_softc *sc, int val)
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{
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uint8_t i;
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int period;
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period = MAX77620_FPS_PERIOD_MIN_US;
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for (i = 0; i < 7; i++) {
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if (period >= val)
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return (i);
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period *= 2;
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}
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return (i);
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}
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static int
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max77620_init(struct max77620_softc *sc)
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{
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uint8_t mask, val, tmp;
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int i, rv;
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mask = 0;
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val = 0;
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for (i = 0; i < MAX77620_FPS_COUNT; i++) {
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if (sc->shutdown_fps[i] != -1) {
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mask |= MAX77620_FPS_TIME_PERIOD_MASK;
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tmp = max77620_encode_fps_period(sc,
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sc->shutdown_fps[i]);
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val |= (tmp << MAX77620_FPS_TIME_PERIOD_SHIFT) &
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MAX77620_FPS_TIME_PERIOD_MASK;
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}
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if (sc->event_source[i] != -1) {
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mask |= MAX77620_FPS_EN_SRC_MASK;
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tmp = sc->event_source[i];
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val |= (tmp << MAX77620_FPS_EN_SRC_SHIFT) &
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MAX77620_FPS_EN_SRC_MASK;
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if (sc->event_source[i] == 2) {
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mask |= MAX77620_FPS_ENFPS_SW_MASK;
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val |= MAX77620_FPS_ENFPS_SW;
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}
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}
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rv = RM1(sc, MAX77620_REG_FPS_CFG0 + i, mask, val);
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if (rv != 0) {
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device_printf(sc->dev, "I/O error: %d\n", rv);
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return (ENXIO);
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}
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}
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/* Global mask interrupts */
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rv = RM1(sc, MAX77620_REG_INTENLBT, 0x81, 0x81);
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rv = RM1(sc, MAX77620_REG_IRQTOPM, 0x81, 0x81);
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if (rv != 0)
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return (ENXIO);
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return (0);
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}
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#ifdef notyet
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static void
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max77620_intr(void *arg)
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{
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struct max77620_softc *sc;
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uint8_t intenlbt, intlbt, irqtop, irqtopm, irqsd, irqmasksd;
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uint8_t irq_lvl2_l0_7, irq_lvl2_l8, irq_lvl2_gpio, irq_msk_l0_7, irq_msk_l8;
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uint8_t onoffirq, onoffirqm;
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sc = (struct max77620_softc *)arg;
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/* XXX Finish temperature alarms. */
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RD1(sc, MAX77620_REG_INTENLBT, &intenlbt);
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RD1(sc, MAX77620_REG_INTLBT, &intlbt);
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RD1(sc, MAX77620_REG_IRQTOP, &irqtop);
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RD1(sc, MAX77620_REG_IRQTOPM, &irqtopm);
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RD1(sc, MAX77620_REG_IRQSD, &irqsd);
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RD1(sc, MAX77620_REG_IRQMASKSD, &irqmasksd);
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RD1(sc, MAX77620_REG_IRQ_LVL2_L0_7, &irq_lvl2_l0_7);
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RD1(sc, MAX77620_REG_IRQ_MSK_L0_7, &irq_msk_l0_7);
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RD1(sc, MAX77620_REG_IRQ_LVL2_L8, &irq_lvl2_l8);
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RD1(sc, MAX77620_REG_IRQ_MSK_L8, &irq_msk_l8);
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RD1(sc, MAX77620_REG_IRQ_LVL2_GPIO, &irq_lvl2_gpio);
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RD1(sc, MAX77620_REG_ONOFFIRQ, &onoffirq);
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RD1(sc, MAX77620_REG_ONOFFIRQM, &onoffirqm);
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printf("%s: intlbt: 0x%02X, intenlbt: 0x%02X\n", __func__, intlbt, intenlbt);
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printf("%s: irqtop: 0x%02X, irqtopm: 0x%02X\n", __func__, irqtop, irqtopm);
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printf("%s: irqsd: 0x%02X, irqmasksd: 0x%02X\n", __func__, irqsd, irqmasksd);
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printf("%s: onoffirq: 0x%02X, onoffirqm: 0x%02X\n", __func__, onoffirq, onoffirqm);
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printf("%s: irq_lvl2_l0_7: 0x%02X, irq_msk_l0_7: 0x%02X\n", __func__, irq_lvl2_l0_7, irq_msk_l0_7);
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printf("%s: irq_lvl2_l8: 0x%02X, irq_msk_l8: 0x%02X\n", __func__, irq_lvl2_l8, irq_msk_l8);
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printf("%s: irq_lvl2_gpio: 0x%02X\n", __func__, irq_lvl2_gpio);
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}
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#endif
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static int
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max77620_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
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return (ENXIO);
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device_set_desc(dev, "MAX77620 PMIC");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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max77620_attach(device_t dev)
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{
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struct max77620_softc *sc;
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int rv, rid;
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phandle_t node;
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sc = device_get_softc(dev);
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sc->dev = dev;
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sc->bus_addr = iicbus_get_addr(dev);
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node = ofw_bus_get_node(sc->dev);
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rv = 0;
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LOCK_INIT(sc);
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rid = 0;
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sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_ACTIVE);
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#ifdef notyet /* Interrupt parent is not implemented */
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if (sc->irq_res == NULL) {
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device_printf(dev, "Cannot allocate interrupt.\n");
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rv = ENXIO;
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goto fail;
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}
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#endif
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rv = max77620_parse_fdt(sc, node);
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if (rv != 0)
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goto fail;
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rv = max77620_get_version(sc);
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if (rv != 0)
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goto fail;
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rv = max77620_init(sc);
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if (rv != 0)
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goto fail;
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rv = max77620_regulator_attach(sc, node);
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if (rv != 0)
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goto fail;
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rv = max77620_gpio_attach(sc, node);
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if (rv != 0)
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goto fail;
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rv = max77620_rtc_create(sc, node);
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if (rv != 0)
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goto fail;
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fdt_pinctrl_register(dev, NULL);
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fdt_pinctrl_configure_by_name(dev, "default");
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/* Setup interrupt. */
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#ifdef notyet
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rv = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
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NULL, max77620_intr, sc, &sc->irq_h);
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if (rv) {
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device_printf(dev, "Cannot setup interrupt.\n");
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goto fail;
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}
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#endif
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return (bus_generic_attach(dev));
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fail:
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if (sc->irq_h != NULL)
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bus_teardown_intr(dev, sc->irq_res, sc->irq_h);
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if (sc->irq_res != NULL)
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bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
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LOCK_DESTROY(sc);
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return (rv);
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}
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static int
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max77620_detach(device_t dev)
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{
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struct max77620_softc *sc;
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sc = device_get_softc(dev);
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if (sc->irq_h != NULL)
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bus_teardown_intr(dev, sc->irq_res, sc->irq_h);
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if (sc->irq_res != NULL)
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bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
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LOCK_DESTROY(sc);
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return (bus_generic_detach(dev));
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}
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static phandle_t
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max77620_gpio_get_node(device_t bus, device_t dev)
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{
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/* We only have one child, the GPIO bus, which needs our own node. */
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return (ofw_bus_get_node(bus));
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}
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static device_method_t max77620_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, max77620_probe),
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DEVMETHOD(device_attach, max77620_attach),
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DEVMETHOD(device_detach, max77620_detach),
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/* Regdev interface */
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DEVMETHOD(regdev_map, max77620_regulator_map),
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|
|
/* GPIO protocol interface */
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DEVMETHOD(gpio_get_bus, max77620_gpio_get_bus),
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DEVMETHOD(gpio_pin_max, max77620_gpio_pin_max),
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DEVMETHOD(gpio_pin_getname, max77620_gpio_pin_getname),
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DEVMETHOD(gpio_pin_getflags, max77620_gpio_pin_getflags),
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DEVMETHOD(gpio_pin_getcaps, max77620_gpio_pin_getcaps),
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DEVMETHOD(gpio_pin_setflags, max77620_gpio_pin_setflags),
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DEVMETHOD(gpio_pin_get, max77620_gpio_pin_get),
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DEVMETHOD(gpio_pin_set, max77620_gpio_pin_set),
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DEVMETHOD(gpio_pin_toggle, max77620_gpio_pin_toggle),
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DEVMETHOD(gpio_map_gpios, max77620_gpio_map_gpios),
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|
|
|
/* fdt_pinctrl interface */
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|
DEVMETHOD(fdt_pinctrl_configure, max77620_pinmux_configure),
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|
|
|
/* ofw_bus interface */
|
|
DEVMETHOD(ofw_bus_get_node, max77620_gpio_get_node),
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|
|
|
DEVMETHOD_END
|
|
};
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|
|
|
static DEFINE_CLASS_0(gpio, max77620_driver, max77620_methods,
|
|
sizeof(struct max77620_softc));
|
|
EARLY_DRIVER_MODULE(max77620, iicbus, max77620_driver, NULL, NULL, 74);
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