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62e8ccc3a4
We've removed kernel option EXT_RESOURCES almost two years ago. While it was ok to have some code under a common 'extres' subdirectory at first, we now have a lot of consumer of it and we made it mandatory so no need to have it under a cryptic name. Reviewed by: mhorne Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D43196
227 lines
5.4 KiB
C
227 lines
5.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018 Rubicon Communications, LLC (Netgate)
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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/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/rman.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/intr.h>
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#include <dev/clk/clk_fixed.h>
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#include <dev/syscon/syscon.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 "syscon_if.h"
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static struct clk_fixed_def ap806_clk_cluster_0 = {
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.clkdef.id = 0,
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.clkdef.name = "ap806-cpu-cluster-0",
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.freq = 0,
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};
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static struct clk_fixed_def ap806_clk_cluster_1 = {
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.clkdef.id = 1,
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.clkdef.name = "ap806-cpu-cluster-1",
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.freq = 0,
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};
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static struct clk_fixed_def ap806_clk_fixed = {
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.clkdef.id = 2,
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.clkdef.name = "ap806-fixed",
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.freq = 1200000000,
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};
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/* Thoses are the only exported clocks AFAICT */
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static const char *mss_parents[] = {"ap806-fixed"};
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static struct clk_fixed_def ap806_clk_mss = {
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.clkdef.id = 3,
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.clkdef.name = "ap806-mss",
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.clkdef.parent_names = mss_parents,
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.clkdef.parent_cnt = 1,
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.mult = 1,
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.div = 6,
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};
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static const char *sdio_parents[] = {"ap806-fixed"};
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static struct clk_fixed_def ap806_clk_sdio = {
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.clkdef.id = 4,
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.clkdef.name = "ap806-sdio",
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.clkdef.parent_names = sdio_parents,
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.clkdef.parent_cnt = 1,
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.mult = 1,
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.div = 3,
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};
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struct mv_ap806_clock_softc {
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device_t dev;
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struct syscon *syscon;
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};
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static struct ofw_compat_data compat_data[] = {
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{"marvell,ap806-clock", 1},
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{NULL, 0}
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};
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#define RD4(sc, reg) SYSCON_READ_4((sc)->syscon, (reg))
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#define WR4(sc, reg, val) SYSCON_WRITE_4((sc)->syscon, (reg), (val))
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static int
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mv_ap806_clock_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 == 0)
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return (ENXIO);
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device_set_desc(dev, "Marvell AP806 Clock Controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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mv_ap806_clock_attach(device_t dev)
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{
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struct mv_ap806_clock_softc *sc;
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struct clkdom *clkdom;
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uint64_t clock_freq;
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uint32_t reg;
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sc = device_get_softc(dev);
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sc->dev = dev;
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if (SYSCON_GET_HANDLE(sc->dev, &sc->syscon) != 0 ||
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sc->syscon == NULL) {
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device_printf(dev, "cannot get syscon for device\n");
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return (ENXIO);
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}
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reg = RD4(sc, 0x400);
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switch (reg & 0x1f) {
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case 0x0:
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case 0x1:
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clock_freq = 2000000000;
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break;
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case 0x4:
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clock_freq = 1600000000;
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break;
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case 0x6:
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clock_freq = 1800000000;
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break;
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case 0x7:
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clock_freq = 1800000000;
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break;
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case 0xb:
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clock_freq = 1600000000;
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break;
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case 0xd:
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clock_freq = 1600000000;
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break;
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case 0x13:
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clock_freq = 1000000000;
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break;
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case 0x14:
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clock_freq = 1333000000;
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break;
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case 0x17:
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clock_freq = 1333000000;
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break;
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case 0x19:
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clock_freq = 1200000000;
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break;
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case 0x1a:
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clock_freq = 1400000000;
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break;
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case 0x1b:
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clock_freq = 600000000;
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break;
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case 0x1c:
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clock_freq = 800000000;
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break;
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case 0x1d:
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clock_freq = 1000000000;
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break;
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default:
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device_printf(dev, "Cannot guess clock freq with reg %x\n",
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reg & 0x1f);
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return (ENXIO);
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break;
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};
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ap806_clk_cluster_0.freq = clock_freq;
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ap806_clk_cluster_1.freq = clock_freq;
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clkdom = clkdom_create(dev);
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clknode_fixed_register(clkdom, &ap806_clk_cluster_0);
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clknode_fixed_register(clkdom, &ap806_clk_cluster_1);
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clknode_fixed_register(clkdom, &ap806_clk_fixed);
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clknode_fixed_register(clkdom, &ap806_clk_mss);
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clknode_fixed_register(clkdom, &ap806_clk_sdio);
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clkdom_finit(clkdom);
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if (bootverbose)
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clkdom_dump(clkdom);
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return (0);
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}
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static int
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mv_ap806_clock_detach(device_t dev)
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{
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return (EBUSY);
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}
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static device_method_t mv_ap806_clock_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, mv_ap806_clock_probe),
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DEVMETHOD(device_attach, mv_ap806_clock_attach),
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DEVMETHOD(device_detach, mv_ap806_clock_detach),
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DEVMETHOD_END
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};
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static driver_t mv_ap806_clock_driver = {
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"mv_ap806_clock",
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mv_ap806_clock_methods,
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sizeof(struct mv_ap806_clock_softc),
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};
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EARLY_DRIVER_MODULE(mv_ap806_clock, simplebus, mv_ap806_clock_driver, 0, 0,
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BUS_PASS_RESOURCE + BUS_PASS_ORDER_LATE);
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