1 files changed, 432 insertions, 0 deletions
diff --git a/drivers/usb/gadget/legacy/nokia.c b/drivers/usb/gadget/legacy/nokia.c
new file mode 100644
index 0000000000..2e15f9a32c
--- /dev/null
+++ b/drivers/usb/gadget/legacy/nokia.c
@@ -0,0 +1,432 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * nokia.c -- Nokia Composite Gadget Driver
+ *
+ * Copyright (C) 2008-2010 Nokia Corporation
+ * Contact: Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * This gadget driver borrows from serial.c which is:
+ *
+ * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
+ * Copyright (C) 2008 by David Brownell
+ * Copyright (C) 2008 by Nokia Corporation
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+
+#include "u_serial.h"
+#include "u_ether.h"
+#include "u_phonet.h"
+#include "u_ecm.h"
+#include "f_mass_storage.h"
+
+/* Defines */
+
+#define NOKIA_VERSION_NUM		0x0211
+#define NOKIA_LONG_NAME			"N900 (PC-Suite Mode)"
+
+USB_GADGET_COMPOSITE_OPTIONS();
+
+USB_ETHERNET_MODULE_PARAMETERS();
+
+static struct fsg_module_parameters fsg_mod_data = {
+	.stall = 0,
+	.luns = 2,
+	.removable_count = 2,
+	.removable = { 1, 1, },
+};
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers	CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
+
+#endif /* CONFIG_USB_DEBUG */
+
+FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
+
+#define NOKIA_VENDOR_ID			0x0421	/* Nokia */
+#define NOKIA_PRODUCT_ID		0x01c8	/* Nokia Gadget */
+
+/* string IDs are assigned dynamically */
+
+#define STRING_DESCRIPTION_IDX		USB_GADGET_FIRST_AVAIL_IDX
+
+static char manufacturer_nokia[] = "Nokia";
+static const char description_nokia[] = "PC-Suite Configuration";
+
+static struct usb_string strings_dev[] = {
+	[USB_GADGET_MANUFACTURER_IDX].s = manufacturer_nokia,
+	[USB_GADGET_PRODUCT_IDX].s = NOKIA_LONG_NAME,
+	[USB_GADGET_SERIAL_IDX].s = "",
+	[STRING_DESCRIPTION_IDX].s = description_nokia,
+	{  } /* 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 struct usb_device_descriptor device_desc = {
+	.bLength		= USB_DT_DEVICE_SIZE,
+	.bDescriptorType	= USB_DT_DEVICE,
+	/* .bcdUSB = DYNAMIC */
+	.bDeviceClass		= USB_CLASS_COMM,
+	.idVendor		= cpu_to_le16(NOKIA_VENDOR_ID),
+	.idProduct		= cpu_to_le16(NOKIA_PRODUCT_ID),
+	.bcdDevice		= cpu_to_le16(NOKIA_VERSION_NUM),
+	/* .iManufacturer = DYNAMIC */
+	/* .iProduct = DYNAMIC */
+	.bNumConfigurations =	1,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Module */
+MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
+MODULE_AUTHOR("Felipe Balbi");
+MODULE_LICENSE("GPL");
+
+/*-------------------------------------------------------------------------*/
+static struct usb_function *f_acm_cfg1;
+static struct usb_function *f_acm_cfg2;
+static struct usb_function *f_ecm_cfg1;
+static struct usb_function *f_ecm_cfg2;
+static struct usb_function *f_obex1_cfg1;
+static struct usb_function *f_obex2_cfg1;
+static struct usb_function *f_obex1_cfg2;
+static struct usb_function *f_obex2_cfg2;
+static struct usb_function *f_phonet_cfg1;
+static struct usb_function *f_phonet_cfg2;
+static struct usb_function *f_msg_cfg1;
+static struct usb_function *f_msg_cfg2;
+
+
+static struct usb_configuration nokia_config_500ma_driver = {
+	.label		= "Bus Powered",
+	.bConfigurationValue = 1,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes	= USB_CONFIG_ATT_ONE,
+	.MaxPower	= 500,
+};
+
+static struct usb_configuration nokia_config_100ma_driver = {
+	.label		= "Self Powered",
+	.bConfigurationValue = 2,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes	= USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+	.MaxPower	= 100,
+};
+
+static struct usb_function_instance *fi_acm;
+static struct usb_function_instance *fi_ecm;
+static struct usb_function_instance *fi_obex1;
+static struct usb_function_instance *fi_obex2;
+static struct usb_function_instance *fi_phonet;
+static struct usb_function_instance *fi_msg;
+
+static int nokia_bind_config(struct usb_configuration *c)
+{
+	struct usb_function *f_acm;
+	struct usb_function *f_phonet = NULL;
+	struct usb_function *f_obex1 = NULL;
+	struct usb_function *f_ecm;
+	struct usb_function *f_obex2 = NULL;
+	struct usb_function *f_msg;
+	int status = 0;
+	int obex1_stat = -1;
+	int obex2_stat = -1;
+	int phonet_stat = -1;
+
+	if (!IS_ERR(fi_phonet)) {
+		f_phonet = usb_get_function(fi_phonet);
+		if (IS_ERR(f_phonet))
+			pr_debug("could not get phonet function\n");
+	}
+
+	if (!IS_ERR(fi_obex1)) {
+		f_obex1 = usb_get_function(fi_obex1);
+		if (IS_ERR(f_obex1))
+			pr_debug("could not get obex function 0\n");
+	}
+
+	if (!IS_ERR(fi_obex2)) {
+		f_obex2 = usb_get_function(fi_obex2);
+		if (IS_ERR(f_obex2))
+			pr_debug("could not get obex function 1\n");
+	}
+
+	f_acm = usb_get_function(fi_acm);
+	if (IS_ERR(f_acm)) {
+		status = PTR_ERR(f_acm);
+		goto err_get_acm;
+	}
+
+	f_ecm = usb_get_function(fi_ecm);
+	if (IS_ERR(f_ecm)) {
+		status = PTR_ERR(f_ecm);
+		goto err_get_ecm;
+	}
+
+	f_msg = usb_get_function(fi_msg);
+	if (IS_ERR(f_msg)) {
+		status = PTR_ERR(f_msg);
+		goto err_get_msg;
+	}
+
+	if (!IS_ERR_OR_NULL(f_phonet)) {
+		phonet_stat = usb_add_function(c, f_phonet);
+		if (phonet_stat)
+			pr_debug("could not add phonet function\n");
+	}
+
+	if (!IS_ERR_OR_NULL(f_obex1)) {
+		obex1_stat = usb_add_function(c, f_obex1);
+		if (obex1_stat)
+			pr_debug("could not add obex function 0\n");
+	}
+
+	if (!IS_ERR_OR_NULL(f_obex2)) {
+		obex2_stat = usb_add_function(c, f_obex2);
+		if (obex2_stat)
+			pr_debug("could not add obex function 1\n");
+	}
+
+	status = usb_add_function(c, f_acm);
+	if (status)
+		goto err_conf;
+
+	status = usb_add_function(c, f_ecm);
+	if (status) {
+		pr_debug("could not bind ecm config %d\n", status);
+		goto err_ecm;
+	}
+
+	status = usb_add_function(c, f_msg);
+	if (status)
+		goto err_msg;
+
+	if (c == &nokia_config_500ma_driver) {
+		f_acm_cfg1 = f_acm;
+		f_ecm_cfg1 = f_ecm;
+		f_phonet_cfg1 = f_phonet;
+		f_obex1_cfg1 = f_obex1;
+		f_obex2_cfg1 = f_obex2;
+		f_msg_cfg1 = f_msg;
+	} else {
+		f_acm_cfg2 = f_acm;
+		f_ecm_cfg2 = f_ecm;
+		f_phonet_cfg2 = f_phonet;
+		f_obex1_cfg2 = f_obex1;
+		f_obex2_cfg2 = f_obex2;
+		f_msg_cfg2 = f_msg;
+	}
+
+	return status;
+err_msg:
+	usb_remove_function(c, f_ecm);
+err_ecm:
+	usb_remove_function(c, f_acm);
+err_conf:
+	if (!obex2_stat)
+		usb_remove_function(c, f_obex2);
+	if (!obex1_stat)
+		usb_remove_function(c, f_obex1);
+	if (!phonet_stat)
+		usb_remove_function(c, f_phonet);
+	usb_put_function(f_msg);
+err_get_msg:
+	usb_put_function(f_ecm);
+err_get_ecm:
+	usb_put_function(f_acm);
+err_get_acm:
+	if (!IS_ERR_OR_NULL(f_obex2))
+		usb_put_function(f_obex2);
+	if (!IS_ERR_OR_NULL(f_obex1))
+		usb_put_function(f_obex1);
+	if (!IS_ERR_OR_NULL(f_phonet))
+		usb_put_function(f_phonet);
+	return status;
+}
+
+static int nokia_bind(struct usb_composite_dev *cdev)
+{
+	struct usb_gadget	*gadget = cdev->gadget;
+	struct fsg_opts		*fsg_opts;
+	struct fsg_config	fsg_config;
+	int			status;
+
+	status = usb_string_ids_tab(cdev, strings_dev);
+	if (status < 0)
+		goto err_usb;
+	device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
+	status = strings_dev[STRING_DESCRIPTION_IDX].id;
+	nokia_config_500ma_driver.iConfiguration = status;
+	nokia_config_100ma_driver.iConfiguration = status;
+
+	if (!gadget_is_altset_supported(gadget)) {
+		status = -ENODEV;
+		goto err_usb;
+	}
+
+	fi_phonet = usb_get_function_instance("phonet");
+	if (IS_ERR(fi_phonet))
+		pr_debug("could not find phonet function\n");
+
+	fi_obex1 = usb_get_function_instance("obex");
+	if (IS_ERR(fi_obex1))
+		pr_debug("could not find obex function 1\n");
+
+	fi_obex2 = usb_get_function_instance("obex");
+	if (IS_ERR(fi_obex2))
+		pr_debug("could not find obex function 2\n");
+
+	fi_acm = usb_get_function_instance("acm");
+	if (IS_ERR(fi_acm)) {
+		status = PTR_ERR(fi_acm);
+		goto err_obex2_inst;
+	}
+
+	fi_ecm = usb_get_function_instance("ecm");
+	if (IS_ERR(fi_ecm)) {
+		status = PTR_ERR(fi_ecm);
+		goto err_acm_inst;
+	}
+
+	fi_msg = usb_get_function_instance("mass_storage");
+	if (IS_ERR(fi_msg)) {
+		status = PTR_ERR(fi_msg);
+		goto err_ecm_inst;
+	}
+
+	/* set up mass storage function */
+	fsg_config_from_params(&fsg_config, &fsg_mod_data, fsg_num_buffers);
+	fsg_config.vendor_name = "Nokia";
+	fsg_config.product_name = "N900";
+
+	fsg_opts = fsg_opts_from_func_inst(fi_msg);
+	fsg_opts->no_configfs = true;
+
+	status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
+	if (status)
+		goto err_msg_inst;
+
+	status = fsg_common_set_cdev(fsg_opts->common, cdev, fsg_config.can_stall);
+	if (status)
+		goto err_msg_buf;
+
+	fsg_common_set_sysfs(fsg_opts->common, true);
+
+	status = fsg_common_create_luns(fsg_opts->common, &fsg_config);
+	if (status)
+		goto err_msg_buf;
+
+	fsg_common_set_inquiry_string(fsg_opts->common, fsg_config.vendor_name,
+				      fsg_config.product_name);
+
+	/* finally register the configuration */
+	status = usb_add_config(cdev, &nokia_config_500ma_driver,
+			nokia_bind_config);
+	if (status < 0)
+		goto err_msg_luns;
+
+	status = usb_add_config(cdev, &nokia_config_100ma_driver,
+			nokia_bind_config);
+	if (status < 0)
+		goto err_put_cfg1;
+
+	usb_composite_overwrite_options(cdev, &coverwrite);
+	dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
+
+	return 0;
+
+err_put_cfg1:
+	usb_put_function(f_acm_cfg1);
+	if (!IS_ERR_OR_NULL(f_obex1_cfg1))
+		usb_put_function(f_obex1_cfg1);
+	if (!IS_ERR_OR_NULL(f_obex2_cfg1))
+		usb_put_function(f_obex2_cfg1);
+	if (!IS_ERR_OR_NULL(f_phonet_cfg1))
+		usb_put_function(f_phonet_cfg1);
+	usb_put_function(f_ecm_cfg1);
+err_msg_luns:
+	fsg_common_remove_luns(fsg_opts->common);
+err_msg_buf:
+	fsg_common_free_buffers(fsg_opts->common);
+err_msg_inst:
+	usb_put_function_instance(fi_msg);
+err_ecm_inst:
+	usb_put_function_instance(fi_ecm);
+err_acm_inst:
+	usb_put_function_instance(fi_acm);
+err_obex2_inst:
+	if (!IS_ERR(fi_obex2))
+		usb_put_function_instance(fi_obex2);
+	if (!IS_ERR(fi_obex1))
+		usb_put_function_instance(fi_obex1);
+	if (!IS_ERR(fi_phonet))
+		usb_put_function_instance(fi_phonet);
+err_usb:
+	return status;
+}
+
+static int nokia_unbind(struct usb_composite_dev *cdev)
+{
+	if (!IS_ERR_OR_NULL(f_obex1_cfg2))
+		usb_put_function(f_obex1_cfg2);
+	if (!IS_ERR_OR_NULL(f_obex2_cfg2))
+		usb_put_function(f_obex2_cfg2);
+	if (!IS_ERR_OR_NULL(f_obex1_cfg1))
+		usb_put_function(f_obex1_cfg1);
+	if (!IS_ERR_OR_NULL(f_obex2_cfg1))
+		usb_put_function(f_obex2_cfg1);
+	if (!IS_ERR_OR_NULL(f_phonet_cfg1))
+		usb_put_function(f_phonet_cfg1);
+	if (!IS_ERR_OR_NULL(f_phonet_cfg2))
+		usb_put_function(f_phonet_cfg2);
+	usb_put_function(f_acm_cfg1);
+	usb_put_function(f_acm_cfg2);
+	usb_put_function(f_ecm_cfg1);
+	usb_put_function(f_ecm_cfg2);
+	usb_put_function(f_msg_cfg1);
+	usb_put_function(f_msg_cfg2);
+
+	usb_put_function_instance(fi_msg);
+	usb_put_function_instance(fi_ecm);
+	if (!IS_ERR(fi_obex2))
+		usb_put_function_instance(fi_obex2);
+	if (!IS_ERR(fi_obex1))
+		usb_put_function_instance(fi_obex1);
+	if (!IS_ERR(fi_phonet))
+		usb_put_function_instance(fi_phonet);
+	usb_put_function_instance(fi_acm);
+
+	return 0;
+}
+
+static struct usb_composite_driver nokia_driver = {
+	.name		= "g_nokia",
+	.dev		= &device_desc,
+	.strings	= dev_strings,
+	.max_speed	= USB_SPEED_HIGH,
+	.bind		= nokia_bind,
+	.unbind		= nokia_unbind,
+};
+
+module_usb_composite_driver(nokia_driver);