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Diffstat (limited to 'drivers/w1/dscore.h')
| -rw-r--r-- | drivers/w1/dscore.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/drivers/w1/dscore.h b/drivers/w1/dscore.h new file mode 100644 index 000000000000..9c767ef4ac24 --- /dev/null +++ b/drivers/w1/dscore.h @@ -0,0 +1,170 @@ +/* + * 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 */ + |