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acpi_iicbus.c
(20.59 KB)
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ad7417.c
(14.78 KB)
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ad7418.c
(6.34 KB)
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adm1030.c
(5.78 KB)
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ads111x.c
(17.29 KB)
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adt746x.c
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ds1307.c
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ds1307reg.h
(2.4 KB)
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ds13rtc.c
(15.63 KB)
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ds1631.c
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ds1672.c
(4.88 KB)
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ds1775.c
(6.87 KB)
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ds3231.c
(15.47 KB)
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ds3231reg.h
(2.9 KB)
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gpio
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htu21.c
(11.65 KB)
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icee.c
(9.6 KB)
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if_ic.c
(9.72 KB)
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iic.c
(11.45 KB)
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iic.h
(2.54 KB)
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iic_recover_bus.c
(4.64 KB)
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iic_recover_bus.h
(2.21 KB)
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iicbb.c
(14.06 KB)
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iicbb_if.m
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iicbus.c
(9.91 KB)
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iicbus.h
(3.68 KB)
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iicbus_if.m
(3.13 KB)
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iichid.c
(32.26 KB)
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iicoc.c
(6.56 KB)
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iicoc.h
(3.59 KB)
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iicoc_fdt.c
(4.97 KB)
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iicoc_pci.c
(4.02 KB)
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iiconf.c
(14.68 KB)
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iiconf.h
(6.33 KB)
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iicsmb.c
(11.36 KB)
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isl12xx.c
(10.75 KB)
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lm75.c
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max6690.c
(10.11 KB)
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mux
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nxprtc.c
(29.39 KB)
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ofw_iicbus.c
(6.91 KB)
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pmic
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rtc
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rtc8583.c
(7.61 KB)
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s35390a.c
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sy8106a.c
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syr827.c
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twsi
Editing: iicoc_fdt.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2019 Axiado Corporation. * All rights reserved. * * This software was developed in part by Philip Paeps under contract for * Axiado Corporation. * * 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/limits.h> #include <sys/module.h> #include <sys/bus.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/rman.h> #include <dev/extres/clk/clk.h> #include <dev/iicbus/iicbus.h> #include <dev/iicbus/iiconf.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> #include "iicbus_if.h" #include "iicoc.h" static struct ofw_compat_data compat_data[] = { { "opencores,i2c-ocores", 1 }, { NULL, 0 } }; static struct resource_spec iicoc_spec[] = { { SYS_RES_MEMORY, 0, RF_ACTIVE }, RESOURCE_SPEC_END }; static phandle_t iicoc_get_node(device_t bus, device_t dev) { /* Share controller node with iicbus device. */ return (ofw_bus_get_node(bus)); } static int iicoc_attach(device_t dev) { struct iicoc_softc *sc; phandle_t node; clk_t clock; uint64_t clockfreq; int error; sc = device_get_softc(dev); sc->dev = dev; mtx_init(&sc->sc_mtx, "iicoc", "iicoc", MTX_DEF); error = bus_alloc_resources(dev, iicoc_spec, &sc->mem_res); if (error) { device_printf(dev, "Could not allocate bus resource.\n"); goto fail; } node = ofw_bus_get_node(dev); sc->reg_shift = 0; OF_getencprop(node, "reg-shift", &sc->reg_shift, sizeof(sc->reg_shift)); error = clk_get_by_ofw_index(dev, 0, 0, &clock); if (error) { device_printf(dev, "Couldn't get clock\n"); goto fail; } error = clk_enable(clock); if (error) { device_printf(dev, "Couldn't enable clock\n"); goto fail1; } error = clk_get_freq(clock, &clockfreq); if (error) { device_printf(dev, "Couldn't get clock frequency\n"); goto fail1; } if (clockfreq > UINT_MAX) { device_printf(dev, "Unsupported clock frequency\n"); goto fail1; } sc->clockfreq = (u_int)clockfreq; sc->i2cfreq = XLP_I2C_FREQ; iicoc_init(dev); sc->iicbus = device_add_child(dev, "iicbus", -1); if (sc->iicbus == NULL) { device_printf(dev, "Could not allocate iicbus instance.\n"); error = ENXIO; goto fail1; } /* Probe and attach the iicbus when interrupts are available. */ config_intrhook_oneshot((ich_func_t)bus_generic_attach, dev); return (0); fail1: clk_disable(clock); fail: bus_release_resources(dev, iicoc_spec, &sc->mem_res); mtx_destroy(&sc->sc_mtx); return (error); } static int iicoc_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "OpenCores I2C master controller"); return (BUS_PROBE_DEFAULT); } static device_method_t iicoc_methods[] = { /* device interface */ DEVMETHOD(device_probe, iicoc_probe), DEVMETHOD(device_attach, iicoc_attach), /* ofw interface */ DEVMETHOD(ofw_bus_get_node, iicoc_get_node), /* iicbus interface */ DEVMETHOD(iicbus_callback, iicbus_null_callback), DEVMETHOD(iicbus_repeated_start, iicoc_iicbus_repeated_start), DEVMETHOD(iicbus_start, iicoc_iicbus_start), DEVMETHOD(iicbus_stop, iicoc_iicbus_stop), DEVMETHOD(iicbus_reset, iicoc_iicbus_reset), DEVMETHOD(iicbus_write, iicoc_iicbus_write), DEVMETHOD(iicbus_read, iicoc_iicbus_read), DEVMETHOD(iicbus_transfer, iicbus_transfer_gen), DEVMETHOD_END }; static driver_t iicoc_driver = { "iicoc", iicoc_methods, sizeof(struct iicoc_softc), }; DRIVER_MODULE(iicoc, simplebus, iicoc_driver, iicoc_devclass, 0, 0); DRIVER_MODULE(ofw_iicbus, iicoc, ofw_iicbus_driver, ofw_iicbus_devclass, 0, 0); MODULE_DEPEND(iicoc, iicbus, 1, 1, 1); MODULE_DEPEND(iicoc, ofw_iicbus, 1, 1, 1);
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