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/*
* dscore.h
*
* Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __DSCORE_H
#define __DSCORE_H
#include <linux/usb.h>
#include <asm/atomic.h>
/* COMMAND TYPE CODES */
#define CONTROL_CMD 0x00
#define COMM_CMD 0x01
#define MODE_CMD 0x02
/* CONTROL COMMAND CODES */
#define CTL_RESET_DEVICE 0x0000
#define CTL_START_EXE 0x0001
#define CTL_RESUME_EXE 0x0002
#define CTL_HALT_EXE_IDLE 0x0003
#define CTL_HALT_EXE_DONE 0x0004
#define CTL_FLUSH_COMM_CMDS 0x0007
#define CTL_FLUSH_RCV_BUFFER 0x0008
#define CTL_FLUSH_XMT_BUFFER 0x0009
#define CTL_GET_COMM_CMDS 0x000A
/* MODE COMMAND CODES */
#define MOD_PULSE_EN 0x0000
#define MOD_SPEED_CHANGE_EN 0x0001
#define MOD_1WIRE_SPEED 0x0002
#define MOD_STRONG_PU_DURATION 0x0003
#define MOD_PULLDOWN_SLEWRATE 0x0004
#define MOD_PROG_PULSE_DURATION 0x0005
#define MOD_WRITE1_LOWTIME 0x0006
#define MOD_DSOW0_TREC 0x0007
/* COMMUNICATION COMMAND CODES */
#define COMM_ERROR_ESCAPE 0x0601
#define COMM_SET_DURATION 0x0012
#define COMM_BIT_IO 0x0020
#define COMM_PULSE 0x0030
#define COMM_1_WIRE_RESET 0x0042
#define COMM_BYTE_IO 0x0052
#define COMM_MATCH_ACCESS 0x0064
#define COMM_BLOCK_IO 0x0074
#define COMM_READ_STRAIGHT 0x0080
#define COMM_DO_RELEASE 0x6092
#define COMM_SET_PATH 0x00A2
#define COMM_WRITE_SRAM_PAGE 0x00B2
#define COMM_WRITE_EPROM 0x00C4
#define COMM_READ_CRC_PROT_PAGE 0x00D4
#define COMM_READ_REDIRECT_PAGE_CRC 0x21E4
#define COMM_SEARCH_ACCESS 0x00F4
/* Communication command bits */
#define COMM_TYPE 0x0008
#define COMM_SE 0x0008
#define COMM_D 0x0008
#define COMM_Z 0x0008
#define COMM_CH 0x0008
#define COMM_SM 0x0008
#define COMM_R 0x0008
#define COMM_IM 0x0001
#define COMM_PS 0x4000
#define COMM_PST 0x4000
#define COMM_CIB 0x4000
#define COMM_RTS 0x4000
#define COMM_DT 0x2000
#define COMM_SPU 0x1000
#define COMM_F 0x0800
#define COMM_NTP 0x0400
#define COMM_ICP 0x0200
#define COMM_RST 0x0100
#define PULSE_PROG 0x01
#define PULSE_SPUE 0x02
#define BRANCH_MAIN 0xCC
#define BRANCH_AUX 0x33
/*
* Duration of the strong pull-up pulse in milliseconds.
*/
#define PULLUP_PULSE_DURATION 750
/* Status flags */
#define ST_SPUA 0x01 /* Strong Pull-up is active */
#define ST_PRGA 0x02 /* 12V programming pulse is being generated */
#define ST_12VP 0x04 /* external 12V programming voltage is present */
#define ST_PMOD 0x08 /* DS2490 powered from USB and external sources */
#define ST_HALT 0x10 /* DS2490 is currently halted */
#define ST_IDLE 0x20 /* DS2490 is currently idle */
#define ST_EPOF 0x80
#define SPEED_NORMAL 0x00
#define SPEED_FLEXIBLE 0x01
#define SPEED_OVERDRIVE 0x02
#define NUM_EP 4
#define EP_CONTROL 0
#define EP_STATUS 1
#define EP_DATA_OUT 2
#define EP_DATA_IN 3
struct ds_device
{
struct usb_device *udev;
struct usb_interface *intf;
int ep[NUM_EP];
atomic_t refcnt;
};
struct ds_status
{
u8 enable;
u8 speed;
u8 pullup_dur;
u8 ppuls_dur;
u8 pulldown_slew;
u8 write1_time;
u8 write0_time;
u8 reserved0;
u8 status;
u8 command0;
u8 command1;
u8 command_buffer_status;
u8 data_out_buffer_status;
u8 data_in_buffer_status;
u8 reserved1;
u8 reserved2;
};
int ds_touch_bit(struct ds_device *, u8, u8 *);
int ds_read_byte(struct ds_device *, u8 *);
int ds_read_bit(struct ds_device *, u8 *);
int ds_write_byte(struct ds_device *, u8);
int ds_write_bit(struct ds_device *, u8);
int ds_start_pulse(struct ds_device *, int);
int ds_set_speed(struct ds_device *, int);
int ds_reset(struct ds_device *, struct ds_status *);
int ds_detect(struct ds_device *, struct ds_status *);
int ds_stop_pulse(struct ds_device *, int);
struct ds_device * ds_get_device(void);
void ds_put_device(struct ds_device *);
int ds_write_block(struct ds_device *, u8 *, int);
int ds_read_block(struct ds_device *, u8 *, int);
#endif /* __DSCORE_H */
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