146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/*-
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* Copyright (c) 2015 Luiz Otavio O Souza <loos@FreeBSD.org>
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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 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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#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 <machine/bus.h>
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#include <dev/dwc/if_dwc.h>
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#include <dev/dwc/if_dwcvar.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 <arm/allwinner/aw_machdep.h>
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#include <dev/extres/clk/clk.h>
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#include <dev/extres/regulator/regulator.h>
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#include "if_dwc_if.h"
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static int
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a20_if_dwc_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_is_compatible(dev, "allwinner,sun7i-a20-gmac"))
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return (ENXIO);
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device_set_desc(dev, "A20 Gigabit Ethernet Controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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a20_if_dwc_init(device_t dev)
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{
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const char *tx_parent_name;
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char *phy_type;
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clk_t clk_tx, clk_tx_parent;
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regulator_t reg;
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phandle_t node;
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int error;
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node = ofw_bus_get_node(dev);
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/* Configure PHY for MII or RGMII mode */
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if (OF_getprop_alloc(node, "phy-mode", 1, (void **)&phy_type)) {
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error = clk_get_by_ofw_name(dev, 0, "allwinner_gmac_tx", &clk_tx);
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if (error != 0) {
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device_printf(dev, "could not get tx clk\n");
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return (error);
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}
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if (strcmp(phy_type, "rgmii") == 0)
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tx_parent_name = "gmac_int_tx";
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else
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tx_parent_name = "mii_phy_tx";
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error = clk_get_by_name(dev, tx_parent_name, &clk_tx_parent);
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if (error != 0) {
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device_printf(dev, "could not get clock '%s'\n",
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tx_parent_name);
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return (error);
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}
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error = clk_set_parent_by_clk(clk_tx, clk_tx_parent);
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if (error != 0) {
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device_printf(dev, "could not set tx clk parent\n");
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return (error);
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}
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}
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/* Enable PHY regulator if applicable */
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if (regulator_get_by_ofw_property(dev, 0, "phy-supply", ®) == 0) {
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error = regulator_enable(reg);
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if (error != 0) {
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device_printf(dev, "could not enable PHY regulator\n");
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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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a20_if_dwc_mac_type(device_t dev)
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{
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return (DWC_GMAC_ALT_DESC);
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}
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static int
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a20_if_dwc_mii_clk(device_t dev)
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{
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return (GMAC_MII_CLK_150_250M_DIV102);
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}
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static device_method_t a20_dwc_methods[] = {
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DEVMETHOD(device_probe, a20_if_dwc_probe),
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DEVMETHOD(if_dwc_init, a20_if_dwc_init),
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DEVMETHOD(if_dwc_mac_type, a20_if_dwc_mac_type),
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DEVMETHOD(if_dwc_mii_clk, a20_if_dwc_mii_clk),
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DEVMETHOD_END
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};
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static devclass_t a20_dwc_devclass;
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extern driver_t dwc_driver;
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DEFINE_CLASS_1(dwc, a20_dwc_driver, a20_dwc_methods, sizeof(struct dwc_softc),
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dwc_driver);
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DRIVER_MODULE(a20_dwc, simplebus, a20_dwc_driver, a20_dwc_devclass, 0, 0);
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MODULE_DEPEND(a20_dwc, dwc, 1, 1, 1);
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