0aa4b81381
For now clocks, GPIO, Pinmux, UART, MMC, EHCI is supported. Tested on OrangePi-One Reviewed by: jmcneill Approved by: cognet (mentor) Differential Revision: https://reviews.freebsd.org/D6311
152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*-
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* Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
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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
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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* $FreeBSD$
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*/
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/*
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* Allwinner USB PHY
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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/rman.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/gpio.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/clk/clk.h>
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#include <dev/extres/hwreset/hwreset.h>
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#include <dev/extres/regulator/regulator.h>
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#define USBPHY_NUMOFF 3
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static struct ofw_compat_data compat_data[] = {
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{ "allwinner,sun4i-a10-usb-phy", 1 },
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{ "allwinner,sun5i-a13-usb-phy", 1 },
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{ "allwinner,sun6i-a31-usb-phy", 1 },
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{ "allwinner,sun7i-a20-usb-phy", 1 },
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{ "allwinner,sun8i-a83t-usb-phy", 1 },
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{ "allwinner,sun8i-h3-usb-phy", 1 },
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{ NULL, 0 }
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};
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static int
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awusbphy_init(device_t dev)
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{
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char pname[20];
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int error, off;
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regulator_t reg;
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hwreset_t rst;
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clk_t clk;
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/* Enable clocks */
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for (off = 0; clk_get_by_ofw_index(dev, off, &clk) == 0; off++) {
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error = clk_enable(clk);
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if (error != 0) {
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device_printf(dev, "couldn't enable clock %s\n",
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clk_get_name(clk));
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return (error);
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}
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}
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/* De-assert resets */
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for (off = 0; hwreset_get_by_ofw_idx(dev, off, &rst) == 0; off++) {
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error = hwreset_deassert(rst);
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if (error != 0) {
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device_printf(dev, "couldn't de-assert reset %d\n",
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off);
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return (error);
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}
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}
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/* Enable regulator(s) */
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for (off = 0; off < USBPHY_NUMOFF; off++) {
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snprintf(pname, sizeof(pname), "usb%d_vbus-supply", off);
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if (regulator_get_by_ofw_property(dev, pname, ®) != 0)
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continue;
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error = regulator_enable(reg);
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if (error != 0) {
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device_printf(dev, "couldn't enable regulator %s\n",
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pname);
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return (error);
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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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awusbphy_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, "Allwinner USB PHY");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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awusbphy_attach(device_t dev)
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{
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int error;
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error = awusbphy_init(dev);
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if (error)
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device_printf(dev, "failed to initialize USB PHY, error %d\n",
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error);
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return (error);
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}
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static device_method_t awusbphy_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, awusbphy_probe),
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DEVMETHOD(device_attach, awusbphy_attach),
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DEVMETHOD_END
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};
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static driver_t awusbphy_driver = {
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"awusbphy",
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awusbphy_methods,
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0,
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};
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static devclass_t awusbphy_devclass;
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DRIVER_MODULE(awusbphy, simplebus, awusbphy_driver, awusbphy_devclass, 0, 0);
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MODULE_VERSION(awusbphy, 1);
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