2 * Copyright 2017 Emmanuel Vadot <manu@freebsd.org>
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/queue.h>
35 #include <sys/taskqueue.h>
37 #include <machine/bus.h>
39 #include <dev/mmc/bridge.h>
40 #include <dev/mmc/mmc_fdt_helpers.h>
42 #include <dev/ofw/ofw_bus_subr.h>
45 #include <dev/extres/clk/clk.h>
48 #include <dev/mmc/host/dwmmc_var.h>
50 #include "opt_mmccam.h"
57 static struct ofw_compat_data compat_data[] = {
58 {"rockchip,rk2928-dw-mshc", RK2928},
59 {"rockchip,rk3288-dw-mshc", RK3288},
63 static int dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios);
66 rockchip_dwmmc_probe(device_t dev)
69 if (!ofw_bus_status_okay(dev))
72 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
75 device_set_desc(dev, "Synopsys DesignWare Mobile "
76 "Storage Host Controller (RockChip)");
78 return (BUS_PROBE_VENDOR);
82 rockchip_dwmmc_attach(device_t dev)
84 struct dwmmc_softc *sc;
87 sc = device_get_softc(dev);
88 sc->hwtype = HWTYPE_ROCKCHIP;
89 type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
97 sc->pwren_inverted = 1;
100 sc->update_ios = &dwmmc_rockchip_update_ios;
103 return (dwmmc_attach(dev));
108 dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios)
113 if (ios->clock && ios->clock != sc->bus_hz) {
114 sc->bus_hz = clock = ios->clock;
115 /* Set the MMC clock. */
118 * Apparently you need to set the ciu clock to
119 * the double of bus_hz
121 error = clk_set_freq(sc->ciu, clock * 2,
124 device_printf(sc->dev,
125 "failed to set frequency to %u Hz: %d\n",
135 static device_method_t rockchip_dwmmc_methods[] = {
137 DEVMETHOD(device_probe, rockchip_dwmmc_probe),
138 DEVMETHOD(device_attach, rockchip_dwmmc_attach),
139 DEVMETHOD(device_detach, dwmmc_detach),
144 static devclass_t rockchip_dwmmc_devclass;
146 DEFINE_CLASS_1(rockchip_dwmmc, rockchip_dwmmc_driver, rockchip_dwmmc_methods,
147 sizeof(struct dwmmc_softc), dwmmc_driver);
149 DRIVER_MODULE(rockchip_dwmmc, simplebus, rockchip_dwmmc_driver,
150 rockchip_dwmmc_devclass, 0, 0);
151 DRIVER_MODULE(rockchip_dwmmc, ofwbus, rockchip_dwmmc_driver,
152 rockchip_dwmmc_devclass, NULL, NULL);
154 MMC_DECLARE_BRIDGE(rockchip_dwmmc);