sys/arm/broadcom/bcm2835/bcm283x_dwc_fdt.c

   1 /*
   2  * Copyright 2015 Andrew Turner.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met:
   8  *
   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.
  14  *
  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.
  26  */
  27
  28 #include <sys/param.h>
  29 #include <sys/kernel.h>
  30 #include <sys/bus.h>
  31 #include <sys/callout.h>
  32 #include <sys/condvar.h>
  33 #include <sys/module.h>
  34
  35 #include <dev/ofw/ofw_bus_subr.h>
  36
  37 #include <dev/usb/usb.h>
  38 #include <dev/usb/usbdi.h>
  39
  40 #include <dev/usb/usb_busdma.h>
  41 #include <dev/usb/usb_process.h>
  42
  43 #include <dev/usb/usb_controller.h>
  44 #include <dev/usb/usb_bus.h>
  45
  46 #include <dev/usb/controller/dwc_otg.h>
  47 #include <dev/usb/controller/dwc_otg_fdt.h>
  48
  49 #include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
  50
  51 static struct ofw_compat_data compat_data[] = {
  52         {"broadcom,bcm2835-usb",        1},
  53         {"brcm,bcm2835-usb",            1},
  54         {"brcm,bcm2708-usb",            1},
  55         {NULL,                          0}
  56 };
  57
  58 static device_probe_t bcm283x_dwc_otg_probe;
  59 static device_attach_t bcm283x_dwc_otg_attach;
  60
  61 static int
  62 bcm283x_dwc_otg_probe(device_t dev)
  63 {
  64
  65         if (!ofw_bus_status_okay(dev))
  66                 return (ENXIO);
  67
  68         if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
  69                 return (ENXIO);
  70
  71         device_set_desc(dev, "DWC OTG 2.0 integrated USB controller (bcm283x)");
  72
  73         return (BUS_PROBE_VENDOR);
  74 }
  75
  76 static int
  77 bcm283x_dwc_otg_attach(device_t dev)
  78 {
  79         int err;
  80
  81         err = bcm2835_mbox_set_power_state(BCM2835_MBOX_POWER_ID_USB_HCD, TRUE);
  82         if (err)
  83                 device_printf(dev, "failed to set power state, err=%d\n", err);
  84
  85         return (dwc_otg_attach(dev));
  86 }
  87
  88 static device_method_t bcm283x_dwc_otg_methods[] = {
  89         /* bus interface */
  90         DEVMETHOD(device_probe, bcm283x_dwc_otg_probe),
  91         DEVMETHOD(device_attach, bcm283x_dwc_otg_attach),
  92
  93         DEVMETHOD_END
  94 };
  95
  96 DEFINE_CLASS_1(bcm283x_dwcotg, bcm283x_dwc_otg_driver, bcm283x_dwc_otg_methods,
  97     sizeof(struct dwc_otg_fdt_softc), dwc_otg_driver);
  98 DRIVER_MODULE(bcm283x_dwcotg, simplebus, bcm283x_dwc_otg_driver, 0, 0);
  99 MODULE_DEPEND(bcm283x_dwcotg, usb, 1, 1, 1);