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>
43 #include <dev/extres/clk/clk.h>
46 #include <dev/mmc/host/dwmmc_var.h>
48 #include "opt_mmccam.h"
55 static struct ofw_compat_data compat_data[] = {
56 {"rockchip,rk2928-dw-mshc", RK2928},
57 {"rockchip,rk3328-dw-mshc", RK3328},
61 static int dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios);
64 rockchip_dwmmc_probe(device_t dev)
67 if (!ofw_bus_status_okay(dev))
70 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
73 device_set_desc(dev, "Synopsys DesignWare Mobile "
74 "Storage Host Controller (RockChip)");
76 return (BUS_PROBE_VENDOR);
80 rockchip_dwmmc_attach(device_t dev)
82 struct dwmmc_softc *sc;
85 sc = device_get_softc(dev);
86 sc->hwtype = HWTYPE_ROCKCHIP;
87 type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
95 sc->pwren_inverted = 1;
98 sc->update_ios = &dwmmc_rockchip_update_ios;
101 return (dwmmc_attach(dev));
106 dwmmc_rockchip_update_ios(struct dwmmc_softc *sc, struct mmc_ios *ios)
111 if (ios->clock && ios->clock != sc->bus_hz) {
112 sc->bus_hz = clock = ios->clock;
113 /* Set the MMC clock. */
116 * Apparently you need to set the ciu clock to
117 * the double of bus_hz
119 error = clk_set_freq(sc->ciu, clock * 2,
122 device_printf(sc->dev,
123 "failed to set frequency to %u Hz: %d\n",
133 static device_method_t rockchip_dwmmc_methods[] = {
135 DEVMETHOD(device_probe, rockchip_dwmmc_probe),
136 DEVMETHOD(device_attach, rockchip_dwmmc_attach),
141 static devclass_t rockchip_dwmmc_devclass;
143 DEFINE_CLASS_1(rockchip_dwmmc, rockchip_dwmmc_driver, rockchip_dwmmc_methods,
144 sizeof(struct dwmmc_softc), dwmmc_driver);
146 DRIVER_MODULE(rockchip_dwmmc, simplebus, rockchip_dwmmc_driver,
147 rockchip_dwmmc_devclass, 0, 0);
148 DRIVER_MODULE(rockchip_dwmmc, ofwbus, rockchip_dwmmc_driver,
149 rockchip_dwmmc_devclass, NULL, NULL);
151 MMC_DECLARE_BRIDGE(rockchip_dwmmc);