1 files changed, 355 insertions, 0 deletions
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
new file mode 100644
index 000000000000..64711feca845
--- /dev/null
+++ b/drivers/usb/gadget/multi.c
@@ -0,0 +1,355 @@
+/*
+ * multi.c -- Multifunction Composite driver
+ *
+ * Copyright (C) 2008 David Brownell
+ * Copyright (C) 2008 Nokia Corporation
+ * Copyright (C) 2009 Samsung Electronics
+ * Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/utsname.h>
+
+
+#if defined CONFIG_USB_G_MULTI_RNDIS
+#  define CONFIG_USB_ETH_RNDIS y
+#endif
+
+
+#define DRIVER_DESC		"Multifunction Composite Gadget"
+#define DRIVER_VERSION		"2009/07/21"
+
+/*-------------------------------------------------------------------------*/
+
+#define MULTI_VENDOR_NUM	0x0525	/* XXX NetChip */
+#define MULTI_PRODUCT_NUM	0xa4ab	/* XXX */
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+
+#include "composite.c"
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+#include "u_serial.c"
+#include "f_acm.c"
+
+#include "f_ecm.c"
+#include "f_subset.c"
+#ifdef CONFIG_USB_ETH_RNDIS
+#  include "f_rndis.c"
+#  include "rndis.c"
+#endif
+#include "u_ether.c"
+
+#undef DBG     /* u_ether.c has broken idea about macros */
+#undef VDBG    /* so clean up after it */
+#undef ERROR
+#undef INFO
+#include "f_mass_storage.c"
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_device_descriptor device_desc = {
+	.bLength =		sizeof device_desc,
+	.bDescriptorType =	USB_DT_DEVICE,
+
+	.bcdUSB =		cpu_to_le16(0x0200),
+
+	/* .bDeviceClass =		USB_CLASS_COMM, */
+	/* .bDeviceSubClass =	0, */
+	/* .bDeviceProtocol =	0, */
+	.bDeviceClass =		0xEF,
+	.bDeviceSubClass =	2,
+	.bDeviceProtocol =	1,
+	/* .bMaxPacketSize0 = f(hardware) */
+
+	/* Vendor and product id can be overridden by module parameters.  */
+	.idVendor =		cpu_to_le16(MULTI_VENDOR_NUM),
+	.idProduct =		cpu_to_le16(MULTI_PRODUCT_NUM),
+	/* .bcdDevice = f(hardware) */
+	/* .iManufacturer = DYNAMIC */
+	/* .iProduct = DYNAMIC */
+	/* NO SERIAL NUMBER */
+	.bNumConfigurations =	1,
+};
+
+static struct usb_otg_descriptor otg_descriptor = {
+	.bLength =		sizeof otg_descriptor,
+	.bDescriptorType =	USB_DT_OTG,
+
+	/* REVISIT SRP-only hardware is possible, although
+	 * it would not be called "OTG" ...
+	 */
+	.bmAttributes =		USB_OTG_SRP | USB_OTG_HNP,
+};
+
+static const struct usb_descriptor_header *otg_desc[] = {
+	(struct usb_descriptor_header *) &otg_descriptor,
+	NULL,
+};
+
+
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX		0
+#define STRING_PRODUCT_IDX		1
+
+static char manufacturer[50];
+
+static struct usb_string strings_dev[] = {
+	[STRING_MANUFACTURER_IDX].s = manufacturer,
+	[STRING_PRODUCT_IDX].s = DRIVER_DESC,
+	{  } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+	.language	= 0x0409,	/* en-us */
+	.strings	= strings_dev,
+};
+
+static struct usb_gadget_strings *dev_strings[] = {
+	&stringtab_dev,
+	NULL,
+};
+
+static u8 hostaddr[ETH_ALEN];
+
+
+
+/****************************** Configurations ******************************/
+
+static struct fsg_module_parameters mod_data = {
+	.stall = 1
+};
+FSG_MODULE_PARAMETERS(/* no prefix */, mod_data);
+
+static struct fsg_common *fsg_common;
+
+
+#ifdef CONFIG_USB_ETH_RNDIS
+
+static int __init rndis_do_config(struct usb_configuration *c)
+{
+	int ret;
+
+	if (gadget_is_otg(c->cdev->gadget)) {
+		c->descriptors = otg_desc;
+		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+	}
+
+	ret = rndis_bind_config(c, hostaddr);
+	if (ret < 0)
+		return ret;
+
+	ret = acm_bind_config(c, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = fsg_add(c->cdev, c, fsg_common);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct usb_configuration rndis_config_driver = {
+	.label			= "Multifunction Composite (RNDIS + MS + ACM)",
+	.bind			= rndis_do_config,
+	.bConfigurationValue	= 2,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
+};
+
+#endif
+
+#ifdef CONFIG_USB_G_MULTI_CDC
+
+static int __init cdc_do_config(struct usb_configuration *c)
+{
+	int ret;
+
+	if (gadget_is_otg(c->cdev->gadget)) {
+		c->descriptors = otg_desc;
+		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+	}
+
+	ret = ecm_bind_config(c, hostaddr);
+	if (ret < 0)
+		return ret;
+
+	ret = acm_bind_config(c, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = fsg_add(c->cdev, c, fsg_common);
+	if (ret < 0)
+		return ret;
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct usb_configuration cdc_config_driver = {
+	.label			= "Multifunction Composite (CDC + MS + ACM)",
+	.bind			= cdc_do_config,
+	.bConfigurationValue	= 1,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
+};
+
+#endif
+
+
+
+/****************************** Gadget Bind ******************************/
+
+
+static int __init multi_bind(struct usb_composite_dev *cdev)
+{
+	struct usb_gadget *gadget = cdev->gadget;
+	int status, gcnum;
+
+	if (!can_support_ecm(cdev->gadget)) {
+		dev_err(&gadget->dev, "controller '%s' not usable\n",
+		        gadget->name);
+		return -EINVAL;
+	}
+
+	/* set up network link layer */
+	status = gether_setup(cdev->gadget, hostaddr);
+	if (status < 0)
+		return status;
+
+	/* set up serial link layer */
+	status = gserial_setup(cdev->gadget, 1);
+	if (status < 0)
+		goto fail0;
+
+	/* set up mass storage function */
+	fsg_common = fsg_common_from_params(0, cdev, &mod_data);
+	if (IS_ERR(fsg_common)) {
+		status = PTR_ERR(fsg_common);
+		goto fail1;
+	}
+
+
+	gcnum = usb_gadget_controller_number(gadget);
+	if (gcnum >= 0)
+		device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
+	else {
+		/* We assume that can_support_ecm() tells the truth;
+		 * but if the controller isn't recognized at all then
+		 * that assumption is a bit more likely to be wrong.
+		 */
+		WARNING(cdev, "controller '%s' not recognized\n",
+		        gadget->name);
+		device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099);
+	}
+
+
+	/* Allocate string descriptor numbers ... note that string
+	 * contents can be overridden by the composite_dev glue.
+	 */
+
+	/* device descriptor strings: manufacturer, product */
+	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
+	         init_utsname()->sysname, init_utsname()->release,
+	         gadget->name);
+	status = usb_string_id(cdev);
+	if (status < 0)
+		goto fail2;
+	strings_dev[STRING_MANUFACTURER_IDX].id = status;
+	device_desc.iManufacturer = status;
+
+	status = usb_string_id(cdev);
+	if (status < 0)
+		goto fail2;
+	strings_dev[STRING_PRODUCT_IDX].id = status;
+	device_desc.iProduct = status;
+
+#ifdef CONFIG_USB_ETH_RNDIS
+	/* register our first configuration */
+	status = usb_add_config(cdev, &rndis_config_driver);
+	if (status < 0)
+		goto fail2;
+#endif
+
+#ifdef CONFIG_USB_G_MULTI_CDC
+	/* register our second configuration */
+	status = usb_add_config(cdev, &cdc_config_driver);
+	if (status < 0)
+		goto fail2;
+#endif
+
+	dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
+	fsg_common_put(fsg_common);
+	return 0;
+
+fail2:
+	fsg_common_put(fsg_common);
+fail1:
+	gserial_cleanup();
+fail0:
+	gether_cleanup();
+	return status;
+}
+
+static int __exit multi_unbind(struct usb_composite_dev *cdev)
+{
+	gserial_cleanup();
+	gether_cleanup();
+	return 0;
+}
+
+
+/****************************** Some noise ******************************/
+
+
+static struct usb_composite_driver multi_driver = {
+	.name		= "g_multi",
+	.dev		= &device_desc,
+	.strings	= dev_strings,
+	.bind		= multi_bind,
+	.unbind		= __exit_p(multi_unbind),
+};
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Michal Nazarewicz");
+MODULE_LICENSE("GPL");
+
+static int __init g_multi_init(void)
+{
+	return usb_composite_register(&multi_driver);
+}
+module_init(g_multi_init);
+
+static void __exit g_multi_cleanup(void)
+{
+	usb_composite_unregister(&multi_driver);
+}
+module_exit(g_multi_cleanup);