diff options
Diffstat (limited to 'drivers/usb/gadget/serial.c')
| -rw-r--r-- | drivers/usb/gadget/serial.c | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c deleted file mode 100644 index f1d98b7a39..0000000000 --- a/drivers/usb/gadget/serial.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * 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 <common.h> -#include <errno.h> -#include <init.h> -#include <linux/err.h> -#include <usb/ch9.h> -#include <usb/gadget.h> -#include <usb/composite.h> -#include <usb/usbserial.h> -#include <asm/byteorder.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 - -/*-------------------------------------------------------------------------*/ -static struct usb_composite_overwrite coverwrite; - -/* 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_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX - -static struct usb_string strings_dev[] = { - [USB_GADGET_MANUFACTURER_IDX].s = "", - [USB_GADGET_PRODUCT_IDX].s = GS_VERSION_NAME, - [USB_GADGET_SERIAL_IDX].s = "", - [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) */ - /* .idProduct = f(use_acm) */ - .bcdDevice = cpu_to_le16(GS_VERSION_NUM), - /* .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; - -static bool use_obex = false; - -static unsigned n_ports = 1; - -/*-------------------------------------------------------------------------*/ - -static struct usb_configuration serial_config_driver = { - /* .label = f(use_acm) */ - /* .bConfigurationValue = f(use_acm) */ - /* .iConfiguration = DYNAMIC */ - .bmAttributes = USB_CONFIG_ATT_SELFPOWER, -}; - -static struct usb_function_instance *fi_serial[MAX_U_SERIAL_PORTS]; -static struct usb_function *f_serial[MAX_U_SERIAL_PORTS]; - -static int serial_register_ports(struct usb_composite_dev *cdev, - struct usb_configuration *c, const char *f_name) -{ - int i; - int ret; - - ret = usb_add_config_only(cdev, c); - if (ret) - goto out; - - for (i = 0; i < n_ports; i++) { - - fi_serial[i] = usb_get_function_instance(f_name); - if (IS_ERR(fi_serial[i])) { - ret = PTR_ERR(fi_serial[i]); - goto fail; - } - - f_serial[i] = usb_get_function(fi_serial[i]); - if (IS_ERR(f_serial[i])) { - ret = PTR_ERR(f_serial[i]); - goto err_get_func; - } - - ret = usb_add_function(c, f_serial[i]); - if (ret) - goto err_add_func; - } - - return 0; - -err_add_func: - usb_put_function(f_serial[i]); -err_get_func: - usb_put_function_instance(fi_serial[i]); - -fail: - i--; - while (i >= 0) { - usb_remove_function(c, f_serial[i]); - usb_put_function(f_serial[i]); - usb_put_function_instance(fi_serial[i]); - i--; - } -out: - return ret; -} - -static int __init gs_bind(struct usb_composite_dev *cdev) -{ - int status; - struct usb_gadget *gadget = cdev->gadget; - - /* Allocate string descriptor numbers ... note that string - * contents can be overridden by the composite_dev glue. - */ - - if (gadget->vendor_id && gadget->product_id) { - device_desc.idVendor = cpu_to_le16(gadget->vendor_id); - device_desc.idProduct = cpu_to_le16(gadget->product_id); - } else { - device_desc.idVendor = cpu_to_le16(GS_VENDOR_ID); - if (use_acm) - device_desc.idProduct = cpu_to_le16(GS_CDC_PRODUCT_ID); - else - device_desc.idProduct = cpu_to_le16(GS_PRODUCT_ID); - } - - strings_dev[USB_GADGET_MANUFACTURER_IDX].s = gadget->manufacturer; - strings_dev[USB_GADGET_PRODUCT_IDX].s = gadget->productname; - - status = usb_string_ids_tab(cdev, strings_dev); - if (status < 0) - goto fail; - 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; - serial_config_driver.iConfiguration = status; - - if (gadget_is_otg(cdev->gadget)) { - serial_config_driver.descriptors = otg_desc; - serial_config_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - } - - /* register our configuration */ - if (use_acm) { - status = serial_register_ports(cdev, &serial_config_driver, - "acm"); - usb_ep_autoconfig_reset(cdev->gadget); - } else if (use_obex) - status = serial_register_ports(cdev, &serial_config_driver, - "obex"); - else { - status = serial_register_ports(cdev, &serial_config_driver, - "gser"); - } - if (status < 0) - goto fail; - - usb_composite_overwrite_options(cdev, &coverwrite); - INFO(cdev, "%s\n", GS_VERSION_NAME); - - return 0; - -fail: - return status; -} - -static int gs_unbind(struct usb_composite_dev *cdev) -{ - int i; - - for (i = 0; i < n_ports; i++) { - usb_put_function(f_serial[i]); - usb_put_function_instance(fi_serial[i]); - } - return 0; -} - -static struct usb_composite_driver gserial_driver = { - .name = "g_serial", - .dev = &device_desc, - .strings = dev_strings, - .max_speed = USB_SPEED_SUPER, - .bind = gs_bind, - .unbind = gs_unbind, -}; - -int usb_serial_register(struct usb_serial_pdata *pdata) -{ - /* We *could* export two configs; that'd be much cleaner... - * but neither of these product IDs was defined that way. - */ - - use_acm = pdata->acm; - - /* - * PXA CPU suffer a silicon bug which prevents them from being a - * compound device, forbiding the ACM configurations. - */ - - if (IS_ENABLED(CONFIG_ARCH_PXA2XX)) - use_acm = 0; - - if (use_acm) { - serial_config_driver.label = "CDC ACM config"; - serial_config_driver.bConfigurationValue = 2; - device_desc.bDeviceClass = USB_CLASS_COMM; - } else { - serial_config_driver.label = "Generic Serial config"; - serial_config_driver.bConfigurationValue = 1; - device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; - } - - return usb_composite_probe(&gserial_driver); -} - -void usb_serial_unregister(void) -{ - usb_composite_unregister(&gserial_driver); -} |