| 1 | /*
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| 2 | * Copyright (c) 2011 Vojtech Horky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup drvusbmid
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | * Main routines of USB multi interface device driver.
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| 35 | */
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| 36 | #include <errno.h>
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| 37 | #include <str_error.h>
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| 38 | #include <usb/debug.h>
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| 39 | #include <usb/classes/classes.h>
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| 40 | #include <usb/dev/request.h>
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| 41 | #include <usb/descriptor.h>
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| 42 | #include <usb/dev/pipes.h>
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| 43 |
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| 44 | #include "usbmid.h"
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| 45 |
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| 46 | /** Callback when new MID device is attached to the host.
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| 47 | *
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| 48 | * @param gen_dev Generic DDF device representing the new device.
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| 49 | * @return Error code.
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| 50 | */
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| 51 | static int usbmid_device_add(usb_device_t *dev)
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| 52 | {
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| 53 | usb_log_info("Taking care of new MID `%s'.\n", dev->ddf_dev->name);
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| 54 |
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| 55 | usb_pipe_start_long_transfer(&dev->ctrl_pipe);
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| 56 |
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| 57 | bool accept = usbmid_explore_device(dev);
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| 58 |
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| 59 | usb_pipe_end_long_transfer(&dev->ctrl_pipe);
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| 60 |
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| 61 | if (!accept) {
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| 62 | return ENOTSUP;
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| 63 | }
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| 64 |
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| 65 | return EOK;
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| 66 | }
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| 67 |
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| 68 | static int usbmid_device_gone(usb_device_t *dev)
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| 69 | {
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| 70 | assert(dev);
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| 71 | usb_log_info("USB MID gone: `%s'.\n", dev->ddf_dev->name);
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| 72 |
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| 73 | /* Remove ctl function */
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| 74 | usb_mid_t *usb_mid = dev->driver_data;
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| 75 | int ret = ddf_fun_unbind(usb_mid->ctl_fun);
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| 76 | if (ret != EOK) {
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| 77 | usb_log_error("Failed to unbind USB MID ctl function: %s.\n",
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| 78 | str_error(ret));
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| 79 | return ret;
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| 80 | }
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| 81 | ddf_fun_destroy(usb_mid->ctl_fun);
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| 82 |
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| 83 | /* Now remove all other functions */
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| 84 | while (!list_empty(&usb_mid->interface_list)) {
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| 85 | link_t *item = list_first(&usb_mid->interface_list);
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| 86 | list_remove(item);
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| 87 |
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| 88 | usbmid_interface_t *iface = list_get_instance(item,
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| 89 | usbmid_interface_t, link);
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| 90 |
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| 91 | usb_log_info("Removing child for interface %d (%s).\n",
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| 92 | iface->interface_no,
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| 93 | usb_str_class(iface->interface->interface_class));
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| 94 |
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| 95 | const int pret = usbmid_interface_destroy(iface);
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| 96 | if (pret != EOK) {
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| 97 | usb_log_error("Failed to remove child for interface "
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| 98 | "%d (%s): %s\n",
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| 99 | iface->interface_no,
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| 100 | usb_str_class(iface->interface->interface_class),
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| 101 | str_error(pret));
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| 102 | ret = pret;
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| 103 | }
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| 104 | }
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| 105 | return ret;
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| 106 | }
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| 107 |
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| 108 | /** USB MID driver ops. */
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| 109 | static usb_driver_ops_t mid_driver_ops = {
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| 110 | .device_add = usbmid_device_add,
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| 111 | .device_gone = usbmid_device_gone,
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| 112 | };
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| 113 |
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| 114 | /** USB MID driver. */
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| 115 | static usb_driver_t mid_driver = {
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| 116 | .name = NAME,
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| 117 | .ops = &mid_driver_ops,
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| 118 | .endpoints = NULL
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| 119 | };
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| 120 |
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| 121 | int main(int argc, char *argv[])
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| 122 | {
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| 123 | printf(NAME ": USB multi interface device driver.\n");
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| 124 |
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| 125 | usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
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| 126 |
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| 127 | return usb_driver_main(&mid_driver);
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| 128 | }
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| 129 |
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| 130 | /**
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| 131 | * @}
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| 132 | */
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