2 * Copyright 2017 Emmanuel Vadot <manu@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/kernel.h>
34 #include <sys/module.h>
36 #include <machine/bus.h>
38 #include <dev/mmc/bridge.h>
40 #include <dev/ofw/ofw_bus_subr.h>
42 #include <dev/mmc/host/dwmmc_var.h>
49 static struct ofw_compat_data compat_data[] = {
50 {"rockchip,rk2928-dw-mshc", RK2928},
51 {"rockchip,rk3328-dw-mshc", RK3328},
55 static int dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios);
58 rockchip_dwmmc_probe(device_t dev)
61 if (!ofw_bus_status_okay(dev))
64 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
67 device_set_desc(dev, "Synopsys DesignWare Mobile "
68 "Storage Host Controller (RockChip)");
70 return (BUS_PROBE_VENDOR);
74 rockchip_dwmmc_attach(device_t dev)
76 struct dwmmc_softc *sc;
79 sc = device_get_softc(dev);
80 sc->hwtype = HWTYPE_ROCKCHIP;
81 type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
89 sc->pwren_inverted = 1;
91 sc->update_ios = &dwmmc_rockchip_update_ios;
93 return (dwmmc_attach(dev));
97 dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios)
102 if (ios->clock && ios->clock != sc->bus_hz) {
103 sc->bus_hz = clock = ios->clock;
104 /* Set the MMC clock. */
107 * Apparently you need to set the ciu clock to
108 * the double of bus_hz
110 error = clk_set_freq(sc->ciu, clock * 2,
113 device_printf(sc->dev,
114 "failed to set frequency to %u Hz: %d\n",
123 static device_method_t rockchip_dwmmc_methods[] = {
125 DEVMETHOD(device_probe, rockchip_dwmmc_probe),
126 DEVMETHOD(device_attach, rockchip_dwmmc_attach),
131 static devclass_t rockchip_dwmmc_devclass;
133 DEFINE_CLASS_1(rockchip_dwmmc, rockchip_dwmmc_driver, rockchip_dwmmc_methods,
134 sizeof(struct dwmmc_softc), dwmmc_driver);
136 DRIVER_MODULE(rockchip_dwmmc, simplebus, rockchip_dwmmc_driver,
137 rockchip_dwmmc_devclass, 0, 0);
138 DRIVER_MODULE(rockchip_dwmmc, ofwbus, rockchip_dwmmc_driver,
139 rockchip_dwmmc_devclass, NULL, NULL);
141 MMC_DECLARE_BRIDGE(rockchip_dwmmc);