Composite USB download gadget support (g_dnl) for download functions. This code works on top of composite gadget. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Vasut <marex@denx.de>master
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cdeb916120
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/*
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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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}; |
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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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debug("%s\n", __func__); |
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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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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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} |
@ -0,0 +1,33 @@ |
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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 |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (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, |
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* MA 02111-1307 USA |
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*/ |
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#ifndef __G_DOWNLOAD_H_ |
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#define __G_DOWNLOAD_H_ |
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#include <linux/usb/ch9.h> |
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#include <usbdescriptors.h> |
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#include <linux/usb/gadget.h> |
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int g_dnl_register(const char *s); |
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void g_dnl_unregister(void); |
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/* USB initialization declaration - board specific */ |
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void board_usb_init(void); |
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#endif /* __G_DOWNLOAD_H_ */ |
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