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/*
* Copyright (c) 2012, 2013 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _MTP_USB_DRIVER_H_
#define _MTP_USB_DRIVER_H_
#include "mtp_config.h"
#include "mtp_datatype.h"
#include "mtp_msgq.h"
/* Start of driver related defines */
#define MTP_DRIVER_PATH "/dev/usb_mtp_gadget"
/* FunctionFS endpoint paths */
#ifndef MTP_FFS_PATH
#define MTP_FFS_PATH "/dev/usb-funcs/mtp/default"
#endif
#define MTP_EP0_PATH MTP_FFS_PATH "/ep0"
#define MTP_EP_IN_PATH MTP_FFS_PATH "/ep1"
#define MTP_EP_OUT_PATH MTP_FFS_PATH "/ep2"
#define MTP_EP_STATUS_PATH MTP_FFS_PATH "/ep3"
/* These values come from f_mtp_slp.h of kernel source */
#define MTP_IOCTL_LETTER 'Z'
#define MTP_GET_HIGH_FULL_SPEED _IOR(MTP_IOCTL_LETTER, 1, int)
#define MTP_DISABLE _IO(MTP_IOCTL_LETTER, 2)
#define MTP_CLEAR_HALT _IO(MTP_IOCTL_LETTER, 3)
#define MTP_WRITE_INT_DATA _IOW(MTP_IOCTL_LETTER, 4, char *)
#define MTP_SET_USER_PID _IOW(MTP_IOCTL_LETTER, 5, int)
#define MTP_GET_SETUP_DATA _IOR(MTP_IOCTL_LETTER, 6, char *)
#define MTP_SET_SETUP_DATA _IOW(MTP_IOCTL_LETTER, 7, char *)
#define MTP_SEND_RESET_ACK _IO(MTP_IOCTL_LETTER, 8)
#define MTP_SET_ZLP_DATA _IO(MTP_IOCTL_LETTER, 9)
#define MTP_GET_MAX_PKT_SIZE _IOR(MTP_IOCTL_LETTER, 22, void *)
#define SIG_SETUP 44
/* End of driver related defines */
typedef struct mtp_max_pkt_size {
mtp_uint32 tx;
mtp_uint32 rx;
} mtp_max_pkt_size_t;
/* Transport driver interface */
typedef struct mtp_usb_driver {
mtp_bool (*transport_init_usb_device)(void);
void *(*transport_thread_fake_usb_read)(void *arg);
void *(*transport_thread_fake_usb_write)(void *arg);
void (*transport_deinit_usb_device)(void);
void *(*transport_thread_usb_write)(void *arg);
void *(*transport_thread_usb_read)(void *arg);
void *(*transport_thread_usb_control)(void *arg);
mtp_int32 (*transport_mq_init)(msgq_id_t *rx_ipc, msgq_id_t *tx_ipc);
mtp_bool (*transport_mq_deinit)(msgq_id_t *rx_ipc, msgq_id_t *tx_ipc);
mtp_uint32 (*transport_get_usb_packet_len)(void);
mtp_uint32 (*get_tx_pkt_size)(void);
mtp_uint32 (*get_rx_pkt_size)(void);
} mtp_usb_driver_t;
extern const mtp_usb_driver_t mtp_usb_driver_slp;
extern const mtp_usb_driver_t mtp_usb_driver_ffs;
typedef enum {
MTP_TRANSPORT_SLP = 0,
MTP_TRANSPORT_FFS,
MTP_TRANSPORT_NUMBER, /* number of supported transports */
MTP_TRANSPORT_UNKNOWN,
} mtp_transport_type_t;
/* Maximum repeat count for USB error recovery */
#define MTP_USB_ERROR_MAX_RETRY 5
mtp_bool _transport_select_driver(void);
mtp_bool _transport_init_usb_device(void);
void _transport_deinit_usb_device(void);
void *_transport_thread_usb_write(void *arg);
void *_transport_thread_usb_read(void *arg);
void *_transport_thread_usb_control(void *arg);
mtp_int32 _transport_mq_init(msgq_id_t *rx_mqid, msgq_id_t *tx_mqid);
mtp_bool _transport_mq_deinit(msgq_id_t *rx_mqid, msgq_id_t *tx_mqid);
mtp_uint32 _transport_get_usb_packet_len(void);
mtp_uint32 _get_tx_pkt_size(void);
mtp_uint32 _get_rx_pkt_size(void);
mtp_transport_type_t _transport_get_type(void);
#endif /* _MTP_USB_DRIVER_H_ */
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