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/*
* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/*
* otg/functions/acm/tty-if.c
* @(#) tt/root@belcarra.com/debian286.bbb|otg/functions/acm/tty-if.c|20070911235624|35439
*
* Copyright (c) 2003-2005 Belcarra
* Copyright (c) 2005-2006 Belcarra Technologies 2005 Corp
*
* By:
* Stuart Lynne <sl@belcarra.com>,
* Bruce Balden <balden@belcarra.com>
*/
/*!
* @file otg/functions/acm/tty-if.c
* @brief ACM-TTY Descriptor Set
*
* This is the generic portion of the TTY version of the
* ACM driver.
*
* TTY
* Interface
* Upper +----------+
* Edge | tty-l26 |
* Implementation +----------+
*
*
* Function +----------+
* Descriptors | tty-if | <----
* Registration +----------+
*
*
* Function +----------+
* I/O | acm |
* Implementation +----------+
*
*
* Module +----------+
* Loading | acm-l26 |
* +----------+
*
*
*
* @ingroup ACMFunction
* @ingroup LINUXOS
*/
#include <otg/otg-compat.h>
#include <otg/otg-module.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <linux/ctype.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <asm/atomic.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <otg/usbp-chap9.h>
#include <otg/usbp-cdc.h>
#include <otg/usbp-func.h>
#include <otg/usbp-mcpc.h>
#include <otg/otg-trace.h>
#include "acm.h"
/*
* CDC ACM Configuration
*
* Endpoint, Class, Interface, Configuration and Device descriptors/descriptions
*/
/*! Endpoint Index Lists
*/
static u8 tty_alt_endpoint_index[] = { BULK_IN, BULK_OUT, };
static u8 tty_comm_endpoint_index[] = { INT_IN, };
/*! @name Class Descriptors
*/
/*@{*/
static struct usbd_class_header_function_descriptor tty_class_1 = {
bFunctionLength: 0x05,
bDescriptorType: USB_DT_CLASS_SPECIFIC,
bDescriptorSubtype: USB_ST_HEADER,
bcdCDC: __constant_cpu_to_le16(0x0110),
};
static struct usbd_call_management_functional_descriptor tty_class_2 = {
bFunctionLength: 0x05,
bDescriptorType: USB_DT_CLASS_SPECIFIC,
bDescriptorSubtype: USB_ST_CMF,
bmCapabilities: USB_CMFD_CALL_MANAGEMENT | USB_CMFD_DATA_CLASS,
bDataInterface: 1, /* offset to data interface within pipe group */
};
static struct usbd_class_union_function_descriptor tty_class_3 = {
bFunctionLength: 0x05,
bDescriptorType: USB_DT_CLASS_SPECIFIC,
bDescriptorSubtype: USB_ST_UF,
bMasterInterface: 0x00,
bSlaveInterface: { 1 }, /* offset to slave interface within pipe group */
};
/*@}*/
/*! ACMF Class Descriptor
* ACMF - c.f. Table 28
* currenty set to 0x2 - Support Set_Line_Coding etc,
*
* XXX Should we also set 0x4 - Supports Network_Notification?
*/
static struct usbd_abstract_control_functional_descriptor tty_class_4 = {
bFunctionLength: 0x04,
bDescriptorType: USB_DT_CLASS_SPECIFIC,
bDescriptorSubtype: USB_ST_ACMF,
bmCapabilities: USB_ACMFD_CONFIG /*| USB_ACMFD_SEND_BREAK */,
};
static struct usbd_generic_class_descriptor *tty_comm_class_descriptors[] =
{ (struct usbd_generic_class_descriptor *) &tty_class_1,
(struct usbd_generic_class_descriptor *) &tty_class_2,
(struct usbd_generic_class_descriptor *) &tty_class_3,
(struct usbd_generic_class_descriptor *) &tty_class_4, };
/*! Comm alternate descriptions
*/
static struct usbd_alternate_description tty_comm_alternate_descriptions[] = {
{
.iInterface = "Belcarra CDC/ACM",
.bInterfaceClass = COMMUNICATIONS_INTERFACE_CLASS,
.bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
.bInterfaceProtocol = 0x01,
.classes = sizeof (tty_comm_class_descriptors) / sizeof (struct usbd_generic_class_descriptor *),
.class_list = tty_comm_class_descriptors,
.endpoints = sizeof (tty_comm_endpoint_index) / sizeof(u8),
.endpoint_index = tty_comm_endpoint_index,
}, };
/*! Data alternate descriptions
*/
static struct usbd_alternate_description tty_data_alternate_descriptions[] = {
{
.iInterface = "CDC/ACM Data",
.bInterfaceClass = DATA_INTERFACE_CLASS,
.bInterfaceSubClass = COMMUNICATIONS_NO_SUBCLASS,
.bInterfaceProtocol = COMMUNICATIONS_NO_PROTOCOL,
.endpoints = sizeof (tty_alt_endpoint_index) / sizeof(u8),
.endpoint_index = tty_alt_endpoint_index,
}, };
/*! Interface Descriptions List */
static struct usbd_interface_description tty_interfaces[] = {
{
.alternates = sizeof (tty_comm_alternate_descriptions) / sizeof (struct usbd_alternate_description),
.alternate_list = tty_comm_alternate_descriptions,
},
{
.alternates = sizeof (tty_data_alternate_descriptions) / sizeof (struct usbd_alternate_description),
.alternate_list = tty_data_alternate_descriptions,
},
};
/*! Endpoint Request List
* XXX this should be in acm.c
*/
static struct usbd_endpoint_request tty_endpoint_requests[ENDPOINTS+1] = {
{ INT_IN, 1, 0, 0, USB_DIR_IN | USB_ENDPOINT_INTERRUPT, 16, 16, 4, },
{ BULK_IN, 1, 1, 0, USB_DIR_IN | USB_ENDPOINT_BULK, 512 , 512, 0, },
{ BULK_OUT, 1, 1, 0, USB_DIR_OUT | USB_ENDPOINT_BULK, 512, 512, 0, },
{ 0, },
};
static struct usbd_function_operations tty_function_ops;
/*! function_driver
*/
struct usbd_interface_driver tty_function_driver = {
.driver = {
.name = "tty-if",
.fops = &tty_function_ops, },
// .driver.name = "tty-if",
// .driver.fops = &tty_function_ops,
// .driver.function_type = function_interface,
.interfaces = sizeof (tty_interfaces) / sizeof (struct usbd_interface_description),
.interface_list = tty_interfaces,
.endpointsRequested = ENDPOINTS,
.requestedEndpoints = tty_endpoint_requests,
.bFunctionClass = DATA_INTERFACE_CLASS,
.bFunctionSubClass = COMMUNICATIONS_NO_SUBCLASS,
.bFunctionProtocol = COMMUNICATIONS_NO_PROTOCOL,
.iFunction = "Belcarra CDC/ACM",
};
/* ********************************************************************************************* */
/* ********************************************************************************************* */
extern struct acm_os_ops tty_l26_os_ops;
/*!
* @brief tty_if_function_enable - called by USB Device Core to enable the driver
* @param function_instance The function instance for this driver to use.
* @return non-zero if error.
*/
static int tty_if_function_enable (struct usbd_function_instance *function_instance)
{
TRACE_MSG0(TTY, "ENABLED");
return acm_function_enable(function_instance, tty_if, &tty_l26_os_ops, MAX_QUEUED_URBS, MAX_QUEUED_BYTES);
}
/*! void tty_if_exit()
* @brief deregister tty_if interface function driver
* @return none
*/
void tty_if_exit(void)
{
TRACE_MSG0(TTY, "EXIT");
//acm_wait_task(acm->recv_tqueue);
usbd_deregister_interface_function (&tty_function_driver);
}
/*! tty_function_ops
*/
static struct usbd_function_operations tty_function_ops = {
.function_enable = tty_if_function_enable,
.function_disable = acm_function_disable,
.device_request = acm_device_request,
.endpoint_cleared = acm_endpoint_cleared,
.set_configuration = acm_set_configuration,
.set_interface = acm_set_interface,
.reset = acm_reset,
.suspended = acm_suspended,
.resumed = acm_resumed,
};
/*!int tty_if_init(char*)
* @brief initialize and register tty_if interface driver
* @param usbd_module_info
* @return non-zero if error
*/
int tty_if_init(char *usbd_module_info)
{
//printk(KERN_INFO"%s:\n", __FUNCTION__);
TRACE_MSG0(TTY, "INIT");
return usbd_register_interface_function (&tty_function_driver, "tty-if", NULL);
}
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