142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2003-2012 Broadcom Corporation
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* All rights reserved.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF 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/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <dev/iicbus/iicbus.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include "iicbus_if.h"
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#include "iicoc.h"
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static int
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iicoc_detach(device_t dev)
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{
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struct iicoc_softc *sc;
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sc = device_get_softc(dev);
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device_delete_children(dev);
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bus_generic_detach(dev);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem_res);
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mtx_destroy(&sc->sc_mtx);
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return (0);
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}
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/*
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* We add all the devices which we know about.
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* The generic attach routine will attach them if they are alive.
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*/
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static int
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iicoc_attach(device_t dev)
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{
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struct iicoc_softc *sc;
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sc = device_get_softc(dev);
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sc->dev = dev;
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mtx_init(&sc->sc_mtx, "iicoc", "iicoc", MTX_DEF);
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sc->mem_rid = 0;
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sc->mem_res = bus_alloc_resource_anywhere(dev,
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SYS_RES_MEMORY, &sc->mem_rid, 0x100, RF_ACTIVE);
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if (sc->mem_res == NULL) {
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device_printf(dev, "Could not allocate bus resource.\n");
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return (-1);
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}
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iicoc_init(dev);
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sc->iicbus = device_add_child(dev, "iicbus", -1);
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if (sc->iicbus == NULL) {
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device_printf(dev, "Could not allocate iicbus instance.\n");
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
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sc->mem_res);
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mtx_destroy(&sc->sc_mtx);
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return (-1);
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}
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bus_generic_attach(dev);
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return (0);
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}
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static int
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iicoc_probe(device_t dev)
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{
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struct iicoc_softc *sc;
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sc = device_get_softc(dev);
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if ((pci_get_vendor(dev) == 0x184e) &&
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(pci_get_device(dev) == 0x1011)) {
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sc->clockfreq = XLP_I2C_CLKFREQ;
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sc->i2cfreq = XLP_I2C_FREQ;
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sc->reg_shift = 2;
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device_set_desc(dev, "Netlogic XLP I2C Controller");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static device_method_t iicoc_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, iicoc_probe),
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DEVMETHOD(device_attach, iicoc_attach),
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DEVMETHOD(device_detach, iicoc_detach),
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/* iicbus interface */
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DEVMETHOD(iicbus_callback, iicbus_null_callback),
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DEVMETHOD(iicbus_repeated_start, iicoc_iicbus_repeated_start),
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DEVMETHOD(iicbus_start, iicoc_iicbus_start),
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DEVMETHOD(iicbus_stop, iicoc_iicbus_stop),
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DEVMETHOD(iicbus_reset, iicoc_iicbus_reset),
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DEVMETHOD(iicbus_write, iicoc_iicbus_write),
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DEVMETHOD(iicbus_read, iicoc_iicbus_read),
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DEVMETHOD(iicbus_transfer, iicbus_transfer_gen),
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DEVMETHOD_END
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};
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static driver_t iicoc_driver = {
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"iicoc",
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iicoc_methods,
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sizeof(struct iicoc_softc),
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};
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DRIVER_MODULE(iicoc, pci, iicoc_driver, 0, 0);
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