From ea8b18848fbc2093600030ce00156d60018e513c Mon Sep 17 00:00:00 2001 From: Luiz Otavio O Souza <loos@FreeBSD.org> Date: Mon, 21 Sep 2015 01:51:37 +0000 Subject: [PATCH] Add the A20 glue code for if_dwc. This code initializes the GMAC clock and sets the pin mux to rgmii. It also override the if_dwc defaults to set the alternate descriptor type and MII clock used on A20. Tested on cubieboard2 and banana pi. --- sys/arm/allwinner/a20/a20_if_dwc.c | 107 +++++++++++++++++++++++++++++ sys/arm/allwinner/a20/files.a20 | 1 + 2 files changed, 108 insertions(+) create mode 100644 sys/arm/allwinner/a20/a20_if_dwc.c diff --git a/sys/arm/allwinner/a20/a20_if_dwc.c b/sys/arm/allwinner/a20/a20_if_dwc.c new file mode 100644 index 000000000000..88981efb5dc2 --- /dev/null +++ b/sys/arm/allwinner/a20/a20_if_dwc.c @@ -0,0 +1,107 @@ +/*- + * Copyright (c) 2015 Luiz Otavio O Souza <loos@FreeBSD.org> + * All rights reserved. + * + * 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 AUTHOR 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 AUTHOR 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/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> + +#include <machine/bus.h> + +#include <dev/dwc/if_dwc.h> +#include <dev/dwc/if_dwcvar.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <arm/allwinner/a10_clk.h> +#include <arm/allwinner/a10_gpio.h> + +#include "if_dwc_if.h" + +static int +a20_if_dwc_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-gmac")) + return (ENXIO); + device_set_desc(dev, "A20 Gigabit Ethernet Controller"); + + return (BUS_PROBE_DEFAULT); +} + +static int +a20_if_dwc_init(device_t dev) +{ + + /* Activate GMAC clock and set the pin mux to rgmii. */ + if (a10_clk_gmac_activate(ofw_bus_get_node(dev)) != 0 || + a10_gpio_ethernet_activate(A10_GPIO_FUNC_RGMII)) { + device_printf(dev, "could not activate gmac module\n"); + return (ENXIO); + } + + return (0); +} + +static int +a20_if_dwc_mac_type(device_t dev) +{ + + return (DWC_GMAC_ALT_DESC); +} + +static int +a20_if_dwc_mii_clk(device_t dev) +{ + + return (GMAC_MII_CLK_150_250M_DIV102); +} + +static device_method_t a20_dwc_methods[] = { + DEVMETHOD(device_probe, a20_if_dwc_probe), + + DEVMETHOD(if_dwc_init, a20_if_dwc_init), + DEVMETHOD(if_dwc_mac_type, a20_if_dwc_mac_type), + DEVMETHOD(if_dwc_mii_clk, a20_if_dwc_mii_clk), + + DEVMETHOD_END +}; + +static devclass_t a20_dwc_devclass; + +extern driver_t dwc_driver; + +DEFINE_CLASS_1(dwc, a20_dwc_driver, a20_dwc_methods, sizeof(struct dwc_softc), + dwc_driver); +DRIVER_MODULE(a20_dwc, simplebus, a20_dwc_driver, a20_dwc_devclass, 0, 0); + +MODULE_DEPEND(a20_dwc, dwc, 1, 1, 1); diff --git a/sys/arm/allwinner/a20/files.a20 b/sys/arm/allwinner/a20/files.a20 index 25fd88010324..fe475b69a2e8 100644 --- a/sys/arm/allwinner/a20/files.a20 +++ b/sys/arm/allwinner/a20/files.a20 @@ -1,3 +1,4 @@ # $FreeBSD$ arm/allwinner/a20/a20_mp.c optional smp +arm/allwinner/a20/a20_if_dwc.c optional dwc