diff --git a/sys/dev/mmc/host/dwmmc_starfive.c b/sys/dev/mmc/host/dwmmc_starfive.c new file mode 100644 --- /dev/null +++ b/sys/dev/mmc/host/dwmmc_starfive.c @@ -0,0 +1,110 @@ +/* + * Copyright 2017 Emmanuel Vadot + * Copyright 2021 Mitchell Horne + * + * 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 +#include +#include +#include +#include +#include + +#include + +#include +#include + +#include + +#include + +#include "opt_mmccam.h" + +#define SDCARD_FREQ 49500000 + +static struct ofw_compat_data compat_data[] = { + {"starfive,jh7110-mmc", 1}, + {NULL, 0} +}; + +static int dwmmc_starfive_update_ios(struct dwmmc_softc *sc, + struct mmc_ios *ios) +{ + int err; + + err = clk_set_freq(sc->ciu, SDCARD_FREQ, CLK_SET_ROUND_DOWN); + if (err) { + printf("%s, Failed to set freq for ciu clock\n", __func__); + return (err); + } + + return (0); +} + +static int +starfive_dwmmc_probe(device_t dev) +{ + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_search_compatible(dev, compat_data)->ocd_str == NULL) + return (ENXIO); + + device_set_desc(dev, "Synopsys DesignWare Mobile Storage " + "Host Controller (StarFive)"); + + return (BUS_PROBE_VENDOR); +} + +static int +starfive_dwmmc_attach(device_t dev) +{ + + struct dwmmc_softc *sc; + + sc = device_get_softc(dev); + sc->update_ios = &dwmmc_starfive_update_ios; + + return (dwmmc_attach(dev)); +} + +static device_method_t starfive_dwmmc_methods[] = { + /* bus interface */ + DEVMETHOD(device_probe, starfive_dwmmc_probe), + DEVMETHOD(device_attach, starfive_dwmmc_attach), + DEVMETHOD(device_detach, dwmmc_detach), + + DEVMETHOD_END +}; + +DEFINE_CLASS_1(starfive_dwmmc, starfive_dwmmc_driver, starfive_dwmmc_methods, + sizeof(struct dwmmc_softc), dwmmc_driver); + +DRIVER_MODULE(starfive_dwmmc, simplebus, starfive_dwmmc_driver, 0, 0); + +#ifndef MMCCAM +MMC_DECLARE_BRIDGE(starfive_dwmmc); +#endif