Well, not terminating the list causes very interesting crashes. As in changing the vendor & product ID crashes. Fun. Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
213 lines
4.9 KiB
C
213 lines
4.9 KiB
C
/*
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* g_dnl.c -- USB Downloader Gadget
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*
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* Copyright (C) 2012 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <errno.h>
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#include <common.h>
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#include <malloc.h>
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#include <mmc.h>
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#include <part.h>
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#include <g_dnl.h>
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#include "f_dfu.h"
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#include "gadget_chips.h"
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#include "composite.c"
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/*
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* One needs to define the following:
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* CONFIG_G_DNL_VENDOR_NUM
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* CONFIG_G_DNL_PRODUCT_NUM
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* CONFIG_G_DNL_MANUFACTURER
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* at e.g. ./include/configs/<board>.h
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*/
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#define STRING_MANUFACTURER 25
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#define STRING_PRODUCT 2
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#define STRING_USBDOWN 2
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#define CONFIG_USBDOWNLOADER 2
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#define DRIVER_VERSION "usb_dnl 2.0"
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static const char shortname[] = "usb_dnl_";
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static const char product[] = "USB download gadget";
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static const char manufacturer[] = CONFIG_G_DNL_MANUFACTURER;
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static struct usb_device_descriptor device_desc = {
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.bLength = sizeof device_desc,
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.bDescriptorType = USB_DT_DEVICE,
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.bcdUSB = __constant_cpu_to_le16(0x0200),
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.bDeviceClass = USB_CLASS_COMM,
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.bDeviceSubClass = 0x02, /*0x02:CDC-modem , 0x00:CDC-serial*/
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.idVendor = __constant_cpu_to_le16(CONFIG_G_DNL_VENDOR_NUM),
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.idProduct = __constant_cpu_to_le16(CONFIG_G_DNL_PRODUCT_NUM),
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.iProduct = STRING_PRODUCT,
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.bNumConfigurations = 1,
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};
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/* static strings, in UTF-8 */
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static struct usb_string g_dnl_string_defs[] = {
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{ 0, manufacturer, },
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{ 1, product, },
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{ } /* end of list */
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};
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static struct usb_gadget_strings g_dnl_string_tab = {
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.language = 0x0409, /* en-us */
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.strings = g_dnl_string_defs,
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};
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static struct usb_gadget_strings *g_dnl_composite_strings[] = {
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&g_dnl_string_tab,
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NULL,
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};
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static int g_dnl_unbind(struct usb_composite_dev *cdev)
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{
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struct usb_gadget *gadget = cdev->gadget;
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debug("%s: calling usb_gadget_disconnect for "
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"controller '%s'\n", shortname, gadget->name);
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usb_gadget_disconnect(gadget);
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return 0;
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}
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static int g_dnl_do_config(struct usb_configuration *c)
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{
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const char *s = c->cdev->driver->name;
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int ret = -1;
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debug("%s: configuration: 0x%p composite dev: 0x%p\n",
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__func__, c, c->cdev);
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printf("GADGET DRIVER: %s\n", s);
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if (!strcmp(s, "usb_dnl_dfu"))
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ret = dfu_add(c);
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return ret;
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}
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static int g_dnl_config_register(struct usb_composite_dev *cdev)
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{
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static struct usb_configuration config = {
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.label = "usb_dnload",
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.bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
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.bConfigurationValue = CONFIG_USBDOWNLOADER,
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.iConfiguration = STRING_USBDOWN,
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.bind = g_dnl_do_config,
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};
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return usb_add_config(cdev, &config);
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}
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static int g_dnl_bind(struct usb_composite_dev *cdev)
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{
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struct usb_gadget *gadget = cdev->gadget;
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int id, ret;
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int gcnum;
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debug("%s: gadget: 0x%p cdev: 0x%p\n", __func__, gadget, cdev);
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id = usb_string_id(cdev);
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if (id < 0)
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return id;
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g_dnl_string_defs[0].id = id;
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device_desc.iManufacturer = id;
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id = usb_string_id(cdev);
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if (id < 0)
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return id;
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g_dnl_string_defs[1].id = id;
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device_desc.iProduct = id;
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ret = g_dnl_config_register(cdev);
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if (ret)
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goto error;
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gcnum = usb_gadget_controller_number(gadget);
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debug("gcnum: %d\n", gcnum);
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if (gcnum >= 0)
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device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
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else {
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debug("%s: controller '%s' not recognized\n",
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shortname, gadget->name);
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device_desc.bcdDevice = __constant_cpu_to_le16(0x9999);
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}
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debug("%s: calling usb_gadget_connect for "
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"controller '%s'\n", shortname, gadget->name);
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usb_gadget_connect(gadget);
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return 0;
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error:
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g_dnl_unbind(cdev);
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return -ENOMEM;
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}
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static struct usb_composite_driver g_dnl_driver = {
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.name = NULL,
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.dev = &device_desc,
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.strings = g_dnl_composite_strings,
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.bind = g_dnl_bind,
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.unbind = g_dnl_unbind,
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};
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int g_dnl_register(const char *type)
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{
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/* We only allow "dfu" atm, so 3 should be enough */
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static char name[sizeof(shortname) + 3];
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int ret;
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if (!strcmp(type, "dfu")) {
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strcpy(name, shortname);
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strcat(name, type);
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} else {
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printf("%s: unknown command: %s\n", __func__, type);
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return -EINVAL;
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}
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g_dnl_driver.name = name;
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debug("%s: g_dnl_driver.name: %s\n", __func__, g_dnl_driver.name);
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ret = usb_composite_register(&g_dnl_driver);
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if (ret) {
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printf("%s: failed!, error: %d\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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void g_dnl_unregister(void)
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{
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usb_composite_unregister(&g_dnl_driver);
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}
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