zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/usb/gadget/serial.c b/ap/os/linux/linux-3.4.x/drivers/usb/gadget/serial.c
new file mode 100644
index 0000000..665c074
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/usb/gadget/serial.c
@@ -0,0 +1,283 @@
+/*
+ * serial.c -- USB gadget serial driver
+ *
+ * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
+ * Copyright (C) 2008 by David Brownell
+ * Copyright (C) 2008 by Nokia Corporation
+ *
+ * This software is distributed under the terms of the GNU General
+ * Public License ("GPL") as published by the Free Software Foundation,
+ * either version 2 of that License or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/utsname.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+
+#include "u_serial.h"
+#include "gadget_chips.h"
+
+
+/* Defines */
+
+#define GS_VERSION_STR "v2.4"
+#define GS_VERSION_NUM 0x2400
+
+#define GS_LONG_NAME "Gadget Serial"
+#define GS_VERSION_NAME GS_LONG_NAME " " GS_VERSION_STR
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * 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 "f_acm.c"
+#include "f_obex.c"
+#include "f_serial.c"
+#include "u_serial.c"
+
+/*-------------------------------------------------------------------------*/
+
+/* Thanks to NetChip Technologies for donating this product ID.
+*
+* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
+* Instead: allocate your own, using normal USB-IF procedures.
+*/
+#define GS_VENDOR_ID 0x0525 /* NetChip */
+#define GS_PRODUCT_ID 0xa4a6 /* Linux-USB Serial Gadget */
+#define GS_CDC_PRODUCT_ID 0xa4a7 /* ... as CDC-ACM */
+#define GS_CDC_OBEX_PRODUCT_ID 0xa4a9 /* ... as CDC-OBEX */
+
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX 0
+#define STRING_PRODUCT_IDX 1
+#define STRING_DESCRIPTION_IDX 2
+
+static char manufacturer[50];
+
+static struct usb_string strings_dev[] = {
+ [STRING_MANUFACTURER_IDX].s = manufacturer,
+ [STRING_PRODUCT_IDX].s = GS_VERSION_NAME,
+ [STRING_DESCRIPTION_IDX].s = NULL /* updated; f(use_acm) */,
+ { } /* 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 = cpu_to_le16(0x0200),
+ /* .bDeviceClass = f(use_acm) */
+ .bDeviceSubClass = 0,
+ .bDeviceProtocol = 0,
+ /* .bMaxPacketSize0 = f(hardware) */
+ .idVendor = cpu_to_le16(GS_VENDOR_ID),
+ /* .idProduct = f(use_acm) */
+ /* .bcdDevice = f(hardware) */
+ /* .iManufacturer = DYNAMIC */
+ /* .iProduct = DYNAMIC */
+ .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,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Module */
+MODULE_DESCRIPTION(GS_VERSION_NAME);
+MODULE_AUTHOR("Al Borchers");
+MODULE_AUTHOR("David Brownell");
+MODULE_LICENSE("GPL");
+
+static bool use_acm = true;
+module_param(use_acm, bool, 0);
+MODULE_PARM_DESC(use_acm, "Use CDC ACM, default=yes");
+
+static bool use_obex = false;
+module_param(use_obex, bool, 0);
+MODULE_PARM_DESC(use_obex, "Use CDC OBEX, default=no");
+
+static unsigned n_ports = 1;
+module_param(n_ports, uint, 0);
+MODULE_PARM_DESC(n_ports, "number of ports to create, default=1");
+
+/*-------------------------------------------------------------------------*/
+
+static int __init serial_bind_config(struct usb_configuration *c)
+{
+ unsigned i;
+ int status = 0;
+
+ for (i = 0; i < n_ports && status == 0; i++) {
+ if (use_acm)
+ status = acm_bind_config(c, i);
+ else if (use_obex)
+ status = obex_bind_config(c, i);
+ else
+ status = gser_bind_config(c, i);
+ }
+ return status;
+}
+
+static struct usb_configuration serial_config_driver = {
+ /* .label = f(use_acm) */
+ /* .bConfigurationValue = f(use_acm) */
+ /* .iConfiguration = DYNAMIC */
+ .bmAttributes = USB_CONFIG_ATT_SELFPOWER,
+};
+
+static int __init gs_bind(struct usb_composite_dev *cdev)
+{
+ int gcnum;
+ struct usb_gadget *gadget = cdev->gadget;
+ int status;
+
+ status = gserial_setup(cdev->gadget, n_ports);
+ if (status < 0)
+ return status;
+
+ /* Allocate string descriptor numbers ... note that string
+ * contents can be overridden by the composite_dev glue.
+ */
+
+ /* device description: 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 fail;
+ strings_dev[STRING_MANUFACTURER_IDX].id = status;
+
+ device_desc.iManufacturer = status;
+
+ status = usb_string_id(cdev);
+ if (status < 0)
+ goto fail;
+ strings_dev[STRING_PRODUCT_IDX].id = status;
+
+ device_desc.iProduct = status;
+
+ /* config description */
+ status = usb_string_id(cdev);
+ if (status < 0)
+ goto fail;
+ strings_dev[STRING_DESCRIPTION_IDX].id = status;
+
+ serial_config_driver.iConfiguration = status;
+
+ /* set up other descriptors */
+ gcnum = usb_gadget_controller_number(gadget);
+ if (gcnum >= 0)
+ device_desc.bcdDevice = cpu_to_le16(GS_VERSION_NUM | gcnum);
+ else {
+ /* this is so simple (for now, no altsettings) that it
+ * SHOULD NOT have problems with bulk-capable hardware.
+ * so warn about unrcognized controllers -- don't panic.
+ *
+ * things like configuration and altsetting numbering
+ * can need hardware-specific attention though.
+ */
+ pr_warning("gs_bind: controller '%s' not recognized\n",
+ gadget->name);
+ device_desc.bcdDevice =
+ cpu_to_le16(GS_VERSION_NUM | 0x0099);
+ }
+
+ if (gadget_is_otg(cdev->gadget)) {
+ serial_config_driver.descriptors = otg_desc;
+ serial_config_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+ }
+
+ /* register our configuration */
+ status = usb_add_config(cdev, &serial_config_driver,
+ serial_bind_config);
+ if (status < 0)
+ goto fail;
+
+ INFO(cdev, "%s\n", GS_VERSION_NAME);
+
+ return 0;
+
+fail:
+ gserial_cleanup();
+ return status;
+}
+
+static struct usb_composite_driver gserial_driver = {
+ .name = "g_serial",
+ .dev = &device_desc,
+ .strings = dev_strings,
+ .max_speed = USB_SPEED_SUPER,
+};
+
+static int __init init(void)
+{
+ /* We *could* export two configs; that'd be much cleaner...
+ * but neither of these product IDs was defined that way.
+ */
+ if (use_acm) {
+ serial_config_driver.label = "CDC ACM config";
+ serial_config_driver.bConfigurationValue = 2;
+ device_desc.bDeviceClass = USB_CLASS_COMM;
+ device_desc.idProduct =
+ cpu_to_le16(GS_CDC_PRODUCT_ID);
+ } else if (use_obex) {
+ serial_config_driver.label = "CDC OBEX config";
+ serial_config_driver.bConfigurationValue = 3;
+ device_desc.bDeviceClass = USB_CLASS_COMM;
+ device_desc.idProduct =
+ cpu_to_le16(GS_CDC_OBEX_PRODUCT_ID);
+ } else {
+ serial_config_driver.label = "Generic Serial config";
+ serial_config_driver.bConfigurationValue = 1;
+ device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC;
+ device_desc.idProduct =
+ cpu_to_le16(GS_PRODUCT_ID);
+ }
+ strings_dev[STRING_DESCRIPTION_IDX].s = serial_config_driver.label;
+
+ return usb_composite_probe(&gserial_driver, gs_bind);
+}
+module_init(init);
+
+static void __exit cleanup(void)
+{
+ usb_composite_unregister(&gserial_driver);
+ gserial_cleanup();
+}
+module_exit(cleanup);