a1af70e58b
Use the mmc_fdt_parse function instead of parsing everything in the driver. MFC after: 1 month
156 lines
4.0 KiB
C
156 lines
4.0 KiB
C
/*
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* Copyright 2017 Emmanuel Vadot <manu@freebsd.org>
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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 are
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* met:
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*
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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
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF 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/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <machine/bus.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmc_fdt_helpers.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#ifdef EXT_RESOURCES
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#include <dev/extres/clk/clk.h>
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#endif
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#include <dev/mmc/host/dwmmc_var.h>
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#include "opt_mmccam.h"
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enum RKTYPE {
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RK2928 = 1,
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RK3288,
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};
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static struct ofw_compat_data compat_data[] = {
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{"rockchip,rk2928-dw-mshc", RK2928},
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{"rockchip,rk3288-dw-mshc", RK3288},
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{NULL, 0},
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};
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static int dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios);
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static int
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rockchip_dwmmc_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, "Synopsys DesignWare Mobile "
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"Storage Host Controller (RockChip)");
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return (BUS_PROBE_VENDOR);
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}
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static int
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rockchip_dwmmc_attach(device_t dev)
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{
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struct dwmmc_softc *sc;
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int type;
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sc = device_get_softc(dev);
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sc->hwtype = HWTYPE_ROCKCHIP;
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type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
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switch (type) {
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case RK2928:
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sc->use_pio = 1;
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break;
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}
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sc->pwren_inverted = 1;
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#ifdef EXT_RESOURCES
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sc->update_ios = &dwmmc_rockchip_update_ios;
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#endif
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return (dwmmc_attach(dev));
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}
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#ifdef EXT_RESOURCES
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static int
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dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios)
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{
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unsigned int clock;
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int error;
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if (ios->clock && ios->clock != sc->bus_hz) {
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sc->bus_hz = clock = ios->clock;
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/* Set the MMC clock. */
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if (sc->ciu) {
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/*
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* Apparently you need to set the ciu clock to
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* the double of bus_hz
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*/
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error = clk_set_freq(sc->ciu, clock * 2,
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CLK_SET_ROUND_DOWN);
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if (error != 0) {
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device_printf(sc->dev,
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"failed to set frequency to %u Hz: %d\n",
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clock, error);
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return (error);
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}
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}
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}
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return (0);
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}
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#endif
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static device_method_t rockchip_dwmmc_methods[] = {
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/* bus interface */
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DEVMETHOD(device_probe, rockchip_dwmmc_probe),
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DEVMETHOD(device_attach, rockchip_dwmmc_attach),
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DEVMETHOD(device_detach, dwmmc_detach),
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DEVMETHOD_END
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};
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static devclass_t rockchip_dwmmc_devclass;
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DEFINE_CLASS_1(rockchip_dwmmc, rockchip_dwmmc_driver, rockchip_dwmmc_methods,
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sizeof(struct dwmmc_softc), dwmmc_driver);
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DRIVER_MODULE(rockchip_dwmmc, simplebus, rockchip_dwmmc_driver,
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rockchip_dwmmc_devclass, 0, 0);
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DRIVER_MODULE(rockchip_dwmmc, ofwbus, rockchip_dwmmc_driver,
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rockchip_dwmmc_devclass, NULL, NULL);
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#ifndef MMCCAM
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MMC_DECLARE_BRIDGE(rockchip_dwmmc);
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#endif
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