This W1 support can also be built as a module. If so, the module
will be called wire.ko.
-config W1_MATROX
- tristate "Matrox G400 transport layer for 1-wire"
- depends on W1 && PCI
- help
- Say Y here if you want to communicate with your 1-wire devices
- using Matrox's G400 GPIO pins.
-
- This support is also available as a module. If so, the module
- will be called matrox_w1.ko.
-
-config W1_DS9490
- tristate "DS9490R transport layer driver"
- depends on W1 && USB
- help
- Say Y here if you want to have a driver for DS9490R UWB <-> W1 bridge.
-
- This support is also available as a module. If so, the module
- will be called ds9490r.ko.
-
-config W1_DS9490_BRIDGE
- tristate "DS9490R USB <-> W1 transport layer for 1-wire"
- depends on W1_DS9490
- help
- Say Y here if you want to communicate with your 1-wire devices
- using DS9490R USB bridge.
-
- This support is also available as a module. If so, the module
- will be called ds_w1_bridge.ko.
-
-config W1_THERM
- tristate "Thermal family implementation"
- depends on W1
- help
- Say Y here if you want to connect 1-wire thermal sensors to you
- wire.
-
-config W1_SMEM
- tristate "Simple 64bit memory family implementation"
- depends on W1
- help
- Say Y here if you want to connect 1-wire
- simple 64bit memory rom(ds2401/ds2411/ds1990*) to you wire.
-
-config W1_DS2433
- tristate "4kb EEPROM family support (DS2433)"
- depends on W1
- help
- Say Y here if you want to use a 1-wire
- 4kb EEPROM family device (DS2433).
-
-config W1_DS2433_CRC
- bool "Protect DS2433 data with a CRC16"
- depends on W1_DS2433
- select CRC16
- help
- Say Y here to protect DS2433 data with a CRC16.
- Each block has 30 bytes of data and a two byte CRC16.
- Full block writes are only allowed if the CRC is valid.
+source drivers/w1/masters/Kconfig
+source drivers/w1/slaves/Kconfig
endmenu
obj-$(CONFIG_W1) += wire.o
wire-objs := w1.o w1_int.o w1_family.o w1_netlink.o w1_io.o
-obj-$(CONFIG_W1_MATROX) += matrox_w1.o
-obj-$(CONFIG_W1_THERM) += w1_therm.o
-obj-$(CONFIG_W1_SMEM) += w1_smem.o
+obj-y += masters/ slaves/
-obj-$(CONFIG_W1_DS9490) += ds9490r.o
-ds9490r-objs := dscore.o
-
-obj-$(CONFIG_W1_DS9490_BRIDGE) += ds_w1_bridge.o
-
-obj-$(CONFIG_W1_DS2433) += w1_ds2433.o
+++ /dev/null
-/*
- * ds_w1_bridge.c
- *
- * 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
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-
-#include "../w1/w1.h"
-#include "../w1/w1_int.h"
-#include "dscore.h"
-
-static struct ds_device *ds_dev;
-static struct w1_bus_master *ds_bus_master;
-
-static u8 ds9490r_touch_bit(void *data, u8 bit)
-{
- u8 ret;
- struct ds_device *dev = data;
-
- if (ds_touch_bit(dev, bit, &ret))
- return 0;
-
- return ret;
-}
-
-static void ds9490r_write_bit(void *data, u8 bit)
-{
- struct ds_device *dev = data;
-
- ds_write_bit(dev, bit);
-}
-
-static void ds9490r_write_byte(void *data, u8 byte)
-{
- struct ds_device *dev = data;
-
- ds_write_byte(dev, byte);
-}
-
-static u8 ds9490r_read_bit(void *data)
-{
- struct ds_device *dev = data;
- int err;
- u8 bit = 0;
-
- err = ds_touch_bit(dev, 1, &bit);
- if (err)
- return 0;
- //err = ds_read_bit(dev, &bit);
- //if (err)
- // return 0;
-
- return bit & 1;
-}
-
-static u8 ds9490r_read_byte(void *data)
-{
- struct ds_device *dev = data;
- int err;
- u8 byte = 0;
-
- err = ds_read_byte(dev, &byte);
- if (err)
- return 0;
-
- return byte;
-}
-
-static void ds9490r_write_block(void *data, const u8 *buf, int len)
-{
- struct ds_device *dev = data;
-
- ds_write_block(dev, (u8 *)buf, len);
-}
-
-static u8 ds9490r_read_block(void *data, u8 *buf, int len)
-{
- struct ds_device *dev = data;
- int err;
-
- err = ds_read_block(dev, buf, len);
- if (err < 0)
- return 0;
-
- return len;
-}
-
-static u8 ds9490r_reset(void *data)
-{
- struct ds_device *dev = data;
- struct ds_status st;
- int err;
-
- memset(&st, 0, sizeof(st));
-
- err = ds_reset(dev, &st);
- if (err)
- return 1;
-
- return 0;
-}
-
-static int __devinit ds_w1_init(void)
-{
- int err;
-
- ds_bus_master = kmalloc(sizeof(*ds_bus_master), GFP_KERNEL);
- if (!ds_bus_master) {
- printk(KERN_ERR "Failed to allocate DS9490R USB<->W1 bus_master structure.\n");
- return -ENOMEM;
- }
-
- ds_dev = ds_get_device();
- if (!ds_dev) {
- printk(KERN_ERR "DS9490R is not registered.\n");
- err = -ENODEV;
- goto err_out_free_bus_master;
- }
-
- memset(ds_bus_master, 0, sizeof(*ds_bus_master));
-
- ds_bus_master->data = ds_dev;
- ds_bus_master->touch_bit = &ds9490r_touch_bit;
- ds_bus_master->read_bit = &ds9490r_read_bit;
- ds_bus_master->write_bit = &ds9490r_write_bit;
- ds_bus_master->read_byte = &ds9490r_read_byte;
- ds_bus_master->write_byte = &ds9490r_write_byte;
- ds_bus_master->read_block = &ds9490r_read_block;
- ds_bus_master->write_block = &ds9490r_write_block;
- ds_bus_master->reset_bus = &ds9490r_reset;
-
- err = w1_add_master_device(ds_bus_master);
- if (err)
- goto err_out_put_device;
-
- return 0;
-
-err_out_put_device:
- ds_put_device(ds_dev);
-err_out_free_bus_master:
- kfree(ds_bus_master);
-
- return err;
-}
-
-static void __devexit ds_w1_fini(void)
-{
- w1_remove_master_device(ds_bus_master);
- ds_put_device(ds_dev);
- kfree(ds_bus_master);
-}
-
-module_init(ds_w1_init);
-module_exit(ds_w1_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+++ /dev/null
-/*
- * dscore.c
- *
- * 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
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mod_devicetable.h>
-#include <linux/usb.h>
-
-#include "dscore.h"
-
-static struct usb_device_id ds_id_table [] = {
- { USB_DEVICE(0x04fa, 0x2490) },
- { },
-};
-MODULE_DEVICE_TABLE(usb, ds_id_table);
-
-static int ds_probe(struct usb_interface *, const struct usb_device_id *);
-static void ds_disconnect(struct usb_interface *);
-
-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);
-static int ds_start_pulse(struct ds_device *, int);
-int ds_reset(struct ds_device *, struct ds_status *);
-struct ds_device * ds_get_device(void);
-void ds_put_device(struct ds_device *);
-
-static inline void ds_dump_status(unsigned char *, unsigned char *, int);
-static int ds_send_control(struct ds_device *, u16, u16);
-static int ds_send_control_mode(struct ds_device *, u16, u16);
-static int ds_send_control_cmd(struct ds_device *, u16, u16);
-
-
-static struct usb_driver ds_driver = {
- .name = "DS9490R",
- .probe = ds_probe,
- .disconnect = ds_disconnect,
- .id_table = ds_id_table,
-};
-
-static struct ds_device *ds_dev;
-
-struct ds_device * ds_get_device(void)
-{
- if (ds_dev)
- atomic_inc(&ds_dev->refcnt);
- return ds_dev;
-}
-
-void ds_put_device(struct ds_device *dev)
-{
- atomic_dec(&dev->refcnt);
-}
-
-static int ds_send_control_cmd(struct ds_device *dev, u16 value, u16 index)
-{
- int err;
-
- err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
- CONTROL_CMD, 0x40, value, index, NULL, 0, 1000);
- if (err < 0) {
- printk(KERN_ERR "Failed to send command control message %x.%x: err=%d.\n",
- value, index, err);
- return err;
- }
-
- return err;
-}
-
-static int ds_send_control_mode(struct ds_device *dev, u16 value, u16 index)
-{
- int err;
-
- err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
- MODE_CMD, 0x40, value, index, NULL, 0, 1000);
- if (err < 0) {
- printk(KERN_ERR "Failed to send mode control message %x.%x: err=%d.\n",
- value, index, err);
- return err;
- }
-
- return err;
-}
-
-static int ds_send_control(struct ds_device *dev, u16 value, u16 index)
-{
- int err;
-
- err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
- COMM_CMD, 0x40, value, index, NULL, 0, 1000);
- if (err < 0) {
- printk(KERN_ERR "Failed to send control message %x.%x: err=%d.\n",
- value, index, err);
- return err;
- }
-
- return err;
-}
-
-static inline void ds_dump_status(unsigned char *buf, unsigned char *str, int off)
-{
- printk("%45s: %8x\n", str, buf[off]);
-}
-
-static int ds_recv_status_nodump(struct ds_device *dev, struct ds_status *st,
- unsigned char *buf, int size)
-{
- int count, err;
-
- memset(st, 0, sizeof(st));
-
- count = 0;
- err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_STATUS]), buf, size, &count, 100);
- if (err < 0) {
- printk(KERN_ERR "Failed to read 1-wire data from 0x%x: err=%d.\n", dev->ep[EP_STATUS], err);
- return err;
- }
-
- if (count >= sizeof(*st))
- memcpy(st, buf, sizeof(*st));
-
- return count;
-}
-
-static int ds_recv_status(struct ds_device *dev, struct ds_status *st)
-{
- unsigned char buf[64];
- int count, err = 0, i;
-
- memcpy(st, buf, sizeof(*st));
-
- count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
- if (count < 0)
- return err;
-
- printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], count);
- for (i=0; i<count; ++i)
- printk("%02x ", buf[i]);
- printk("\n");
-
- if (count >= 16) {
- ds_dump_status(buf, "enable flag", 0);
- ds_dump_status(buf, "1-wire speed", 1);
- ds_dump_status(buf, "strong pullup duration", 2);
- ds_dump_status(buf, "programming pulse duration", 3);
- ds_dump_status(buf, "pulldown slew rate control", 4);
- ds_dump_status(buf, "write-1 low time", 5);
- ds_dump_status(buf, "data sample offset/write-0 recovery time", 6);
- ds_dump_status(buf, "reserved (test register)", 7);
- ds_dump_status(buf, "device status flags", 8);
- ds_dump_status(buf, "communication command byte 1", 9);
- ds_dump_status(buf, "communication command byte 2", 10);
- ds_dump_status(buf, "communication command buffer status", 11);
- ds_dump_status(buf, "1-wire data output buffer status", 12);
- ds_dump_status(buf, "1-wire data input buffer status", 13);
- ds_dump_status(buf, "reserved", 14);
- ds_dump_status(buf, "reserved", 15);
- }
-
- memcpy(st, buf, sizeof(*st));
-
- if (st->status & ST_EPOF) {
- printk(KERN_INFO "Resetting device after ST_EPOF.\n");
- err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
- if (err)
- return err;
- count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
- if (count < 0)
- return err;
- }
-#if 0
- if (st->status & ST_IDLE) {
- printk(KERN_INFO "Resetting pulse after ST_IDLE.\n");
- err = ds_start_pulse(dev, PULLUP_PULSE_DURATION);
- if (err)
- return err;
- }
-#endif
-
- return err;
-}
-
-static int ds_recv_data(struct ds_device *dev, unsigned char *buf, int size)
-{
- int count, err;
- struct ds_status st;
-
- count = 0;
- err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]),
- buf, size, &count, 1000);
- if (err < 0) {
- printk(KERN_INFO "Clearing ep0x%x.\n", dev->ep[EP_DATA_IN]);
- usb_clear_halt(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]));
- ds_recv_status(dev, &st);
- return err;
- }
-
-#if 0
- {
- int i;
-
- printk("%s: count=%d: ", __func__, count);
- for (i=0; i<count; ++i)
- printk("%02x ", buf[i]);
- printk("\n");
- }
-#endif
- return count;
-}
-
-static int ds_send_data(struct ds_device *dev, unsigned char *buf, int len)
-{
- int count, err;
-
- count = 0;
- err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, 1000);
- if (err < 0) {
- printk(KERN_ERR "Failed to read 1-wire data from 0x02: err=%d.\n", err);
- return err;
- }
-
- return err;
-}
-
-#if 0
-
-int ds_stop_pulse(struct ds_device *dev, int limit)
-{
- struct ds_status st;
- int count = 0, err = 0;
- u8 buf[0x20];
-
- do {
- err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0);
- if (err)
- break;
- err = ds_send_control(dev, CTL_RESUME_EXE, 0);
- if (err)
- break;
- err = ds_recv_status_nodump(dev, &st, buf, sizeof(buf));
- if (err)
- break;
-
- if ((st.status & ST_SPUA) == 0) {
- err = ds_send_control_mode(dev, MOD_PULSE_EN, 0);
- if (err)
- break;
- }
- } while(++count < limit);
-
- return err;
-}
-
-int ds_detect(struct ds_device *dev, struct ds_status *st)
-{
- int err;
-
- err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
- if (err)
- return err;
-
- err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0);
- if (err)
- return err;
-
- err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40);
- if (err)
- return err;
-
- err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG);
- if (err)
- return err;
-
- err = ds_recv_status(dev, st);
-
- return err;
-}
-
-#endif /* 0 */
-
-static int ds_wait_status(struct ds_device *dev, struct ds_status *st)
-{
- u8 buf[0x20];
- int err, count = 0;
-
- do {
- err = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
-#if 0
- if (err >= 0) {
- int i;
- printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err);
- for (i=0; i<err; ++i)
- printk("%02x ", buf[i]);
- printk("\n");
- }
-#endif
- } while(!(buf[0x08] & 0x20) && !(err < 0) && ++count < 100);
-
-
- if (((err > 16) && (buf[0x10] & 0x01)) || count >= 100 || err < 0) {
- ds_recv_status(dev, st);
- return -1;
- } else
- return 0;
-}
-
-int ds_reset(struct ds_device *dev, struct ds_status *st)
-{
- int err;
-
- //err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_F | COMM_IM | COMM_SE, SPEED_FLEXIBLE);
- err = ds_send_control(dev, 0x43, SPEED_NORMAL);
- if (err)
- return err;
-
- ds_wait_status(dev, st);
-#if 0
- if (st->command_buffer_status) {
- printk(KERN_INFO "Short circuit.\n");
- return -EIO;
- }
-#endif
-
- return 0;
-}
-
-#if 0
-int ds_set_speed(struct ds_device *dev, int speed)
-{
- int err;
-
- if (speed != SPEED_NORMAL && speed != SPEED_FLEXIBLE && speed != SPEED_OVERDRIVE)
- return -EINVAL;
-
- if (speed != SPEED_OVERDRIVE)
- speed = SPEED_FLEXIBLE;
-
- speed &= 0xff;
-
- err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed);
- if (err)
- return err;
-
- return err;
-}
-#endif /* 0 */
-
-static int ds_start_pulse(struct ds_device *dev, int delay)
-{
- int err;
- u8 del = 1 + (u8)(delay >> 4);
- struct ds_status st;
-
-#if 0
- err = ds_stop_pulse(dev, 10);
- if (err)
- return err;
-
- err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
- if (err)
- return err;
-#endif
- err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del);
- if (err)
- return err;
-
- err = ds_send_control(dev, COMM_PULSE | COMM_IM | COMM_F, 0);
- if (err)
- return err;
-
- mdelay(delay);
-
- ds_wait_status(dev, &st);
-
- return err;
-}
-
-int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit)
-{
- int err, count;
- struct ds_status st;
- u16 value = (COMM_BIT_IO | COMM_IM) | ((bit) ? COMM_D : 0);
- u16 cmd;
-
- err = ds_send_control(dev, value, 0);
- if (err)
- return err;
-
- count = 0;
- do {
- err = ds_wait_status(dev, &st);
- if (err)
- return err;
-
- cmd = st.command0 | (st.command1 << 8);
- } while (cmd != value && ++count < 10);
-
- if (err < 0 || count >= 10) {
- printk(KERN_ERR "Failed to obtain status.\n");
- return -EINVAL;
- }
-
- err = ds_recv_data(dev, tbit, sizeof(*tbit));
- if (err < 0)
- return err;
-
- return 0;
-}
-
-int ds_write_bit(struct ds_device *dev, u8 bit)
-{
- int err;
- struct ds_status st;
-
- err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit) ? COMM_D : 0, 0);
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- return 0;
-}
-
-int ds_write_byte(struct ds_device *dev, u8 byte)
-{
- int err;
- struct ds_status st;
- u8 rbyte;
-
- err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | COMM_SPU, byte);
- if (err)
- return err;
-
- err = ds_wait_status(dev, &st);
- if (err)
- return err;
-
- err = ds_recv_data(dev, &rbyte, sizeof(rbyte));
- if (err < 0)
- return err;
-
- ds_start_pulse(dev, PULLUP_PULSE_DURATION);
-
- return !(byte == rbyte);
-}
-
-int ds_read_bit(struct ds_device *dev, u8 *bit)
-{
- int err;
-
- err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
- if (err)
- return err;
-
- err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_SPU | COMM_D, 0);
- if (err)
- return err;
-
- err = ds_recv_data(dev, bit, sizeof(*bit));
- if (err < 0)
- return err;
-
- return 0;
-}
-
-int ds_read_byte(struct ds_device *dev, u8 *byte)
-{
- int err;
- struct ds_status st;
-
- err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM , 0xff);
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- err = ds_recv_data(dev, byte, sizeof(*byte));
- if (err < 0)
- return err;
-
- return 0;
-}
-
-int ds_read_block(struct ds_device *dev, u8 *buf, int len)
-{
- struct ds_status st;
- int err;
-
- if (len > 64*1024)
- return -E2BIG;
-
- memset(buf, 0xFF, len);
-
- err = ds_send_data(dev, buf, len);
- if (err < 0)
- return err;
-
- err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- memset(buf, 0x00, len);
- err = ds_recv_data(dev, buf, len);
-
- return err;
-}
-
-int ds_write_block(struct ds_device *dev, u8 *buf, int len)
-{
- int err;
- struct ds_status st;
-
- err = ds_send_data(dev, buf, len);
- if (err < 0)
- return err;
-
- ds_wait_status(dev, &st);
-
- err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- err = ds_recv_data(dev, buf, len);
- if (err < 0)
- return err;
-
- ds_start_pulse(dev, PULLUP_PULSE_DURATION);
-
- return !(err == len);
-}
-
-#if 0
-
-int ds_search(struct ds_device *dev, u64 init, u64 *buf, u8 id_number, int conditional_search)
-{
- int err;
- u16 value, index;
- struct ds_status st;
-
- memset(buf, 0, sizeof(buf));
-
- err = ds_send_data(ds_dev, (unsigned char *)&init, 8);
- if (err)
- return err;
-
- ds_wait_status(ds_dev, &st);
-
- value = COMM_SEARCH_ACCESS | COMM_IM | COMM_SM | COMM_F | COMM_RTS;
- index = (conditional_search ? 0xEC : 0xF0) | (id_number << 8);
- err = ds_send_control(ds_dev, value, index);
- if (err)
- return err;
-
- ds_wait_status(ds_dev, &st);
-
- err = ds_recv_data(ds_dev, (unsigned char *)buf, 8*id_number);
- if (err < 0)
- return err;
-
- return err/8;
-}
-
-int ds_match_access(struct ds_device *dev, u64 init)
-{
- int err;
- struct ds_status st;
-
- err = ds_send_data(dev, (unsigned char *)&init, sizeof(init));
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055);
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- return 0;
-}
-
-int ds_set_path(struct ds_device *dev, u64 init)
-{
- int err;
- struct ds_status st;
- u8 buf[9];
-
- memcpy(buf, &init, 8);
- buf[8] = BRANCH_MAIN;
-
- err = ds_send_data(dev, buf, sizeof(buf));
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0);
- if (err)
- return err;
-
- ds_wait_status(dev, &st);
-
- return 0;
-}
-
-#endif /* 0 */
-
-static int ds_probe(struct usb_interface *intf,
- const struct usb_device_id *udev_id)
-{
- struct usb_device *udev = interface_to_usbdev(intf);
- struct usb_endpoint_descriptor *endpoint;
- struct usb_host_interface *iface_desc;
- int i, err;
-
- ds_dev = kmalloc(sizeof(struct ds_device), GFP_KERNEL);
- if (!ds_dev) {
- printk(KERN_INFO "Failed to allocate new DS9490R structure.\n");
- return -ENOMEM;
- }
-
- ds_dev->udev = usb_get_dev(udev);
- usb_set_intfdata(intf, ds_dev);
-
- err = usb_set_interface(ds_dev->udev, intf->altsetting[0].desc.bInterfaceNumber, 3);
- if (err) {
- printk(KERN_ERR "Failed to set alternative setting 3 for %d interface: err=%d.\n",
- intf->altsetting[0].desc.bInterfaceNumber, err);
- return err;
- }
-
- err = usb_reset_configuration(ds_dev->udev);
- if (err) {
- printk(KERN_ERR "Failed to reset configuration: err=%d.\n", err);
- return err;
- }
-
- iface_desc = &intf->altsetting[0];
- if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
- printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints);
- return -ENODEV;
- }
-
- atomic_set(&ds_dev->refcnt, 0);
- memset(ds_dev->ep, 0, sizeof(ds_dev->ep));
-
- /*
- * This loop doesn'd show control 0 endpoint,
- * so we will fill only 1-3 endpoints entry.
- */
- for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
- endpoint = &iface_desc->endpoint[i].desc;
-
- ds_dev->ep[i+1] = endpoint->bEndpointAddress;
-
- printk("%d: addr=%x, size=%d, dir=%s, type=%x\n",
- i, endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize),
- (endpoint->bEndpointAddress & USB_DIR_IN)?"IN":"OUT",
- endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
- }
-
-#if 0
- {
- int err, i;
- u64 buf[3];
- u64 init=0xb30000002078ee81ull;
- struct ds_status st;
-
- ds_reset(ds_dev, &st);
- err = ds_search(ds_dev, init, buf, 3, 0);
- if (err < 0)
- return err;
- for (i=0; i<err; ++i)
- printk("%d: %llx\n", i, buf[i]);
-
- printk("Resetting...\n");
- ds_reset(ds_dev, &st);
- printk("Setting path for %llx.\n", init);
- err = ds_set_path(ds_dev, init);
- if (err)
- return err;
- printk("Calling MATCH_ACCESS.\n");
- err = ds_match_access(ds_dev, init);
- if (err)
- return err;
-
- printk("Searching the bus...\n");
- err = ds_search(ds_dev, init, buf, 3, 0);
-
- printk("ds_search() returned %d\n", err);
-
- if (err < 0)
- return err;
- for (i=0; i<err; ++i)
- printk("%d: %llx\n", i, buf[i]);
-
- return 0;
- }
-#endif
-
- return 0;
-}
-
-static void ds_disconnect(struct usb_interface *intf)
-{
- struct ds_device *dev;
-
- dev = usb_get_intfdata(intf);
- usb_set_intfdata(intf, NULL);
-
- while (atomic_read(&dev->refcnt)) {
- printk(KERN_INFO "Waiting for DS to become free: refcnt=%d.\n",
- atomic_read(&dev->refcnt));
-
- if (msleep_interruptible(1000))
- flush_signals(current);
- }
-
- usb_put_dev(dev->udev);
- kfree(dev);
- ds_dev = NULL;
-}
-
-static int ds_init(void)
-{
- int err;
-
- err = usb_register(&ds_driver);
- if (err) {
- printk(KERN_INFO "Failed to register DS9490R USB device: err=%d.\n", err);
- return err;
- }
-
- return 0;
-}
-
-static void ds_fini(void)
-{
- usb_deregister(&ds_driver);
-}
-
-module_init(ds_init);
-module_exit(ds_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
-
-EXPORT_SYMBOL(ds_touch_bit);
-EXPORT_SYMBOL(ds_read_byte);
-EXPORT_SYMBOL(ds_read_bit);
-EXPORT_SYMBOL(ds_read_block);
-EXPORT_SYMBOL(ds_write_byte);
-EXPORT_SYMBOL(ds_write_bit);
-EXPORT_SYMBOL(ds_write_block);
-EXPORT_SYMBOL(ds_reset);
-EXPORT_SYMBOL(ds_get_device);
-EXPORT_SYMBOL(ds_put_device);
-
-/*
- * This functions can be used for EEPROM programming,
- * when driver will be included into mainline this will
- * require uncommenting.
- */
-#if 0
-EXPORT_SYMBOL(ds_start_pulse);
-EXPORT_SYMBOL(ds_set_speed);
-EXPORT_SYMBOL(ds_detect);
-EXPORT_SYMBOL(ds_stop_pulse);
-EXPORT_SYMBOL(ds_search);
-#endif
+++ /dev/null
-/*
- * 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_reset(struct ds_device *, struct ds_status *);
-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 */
-
--- /dev/null
+#
+# 1-wire bus master configuration
+#
+
+menu "1-wire Bus Masters"
+ depends on W1
+
+config W1_MASTER_MATROX
+ tristate "Matrox G400 transport layer for 1-wire"
+ depends on W1 && PCI
+ help
+ Say Y here if you want to communicate with your 1-wire devices
+ using Matrox's G400 GPIO pins.
+
+ This support is also available as a module. If so, the module
+ will be called matrox_w1.ko.
+
+config W1_MASTER_DS9490
+ tristate "DS9490R transport layer driver"
+ depends on W1 && USB
+ help
+ Say Y here if you want to have a driver for DS9490R UWB <-> W1 bridge.
+
+ This support is also available as a module. If so, the module
+ will be called ds9490r.ko.
+
+config W1_MASTER_DS9490_BRIDGE
+ tristate "DS9490R USB <-> W1 transport layer for 1-wire"
+ depends on W1_DS9490
+ help
+ Say Y here if you want to communicate with your 1-wire devices
+ using DS9490R USB bridge.
+
+ This support is also available as a module. If so, the module
+ will be called ds_w1_bridge.ko.
+
+endmenu
+
--- /dev/null
+#
+# Makefile for 1-wire bus master drivers.
+#
+
+obj-$(CONFIG_W1_MASTER_MATROX) += matrox_w1.o
+
+obj-$(CONFIG_W1_MASTER_DS9490) += ds9490r.o
+ds9490r-objs := dscore.o
+
+obj-$(CONFIG_W1_MASTER_DS9490_BRIDGE) += ds_w1_bridge.o
+
--- /dev/null
+/*
+ * ds_w1_bridge.c
+ *
+ * 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
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include "../w1.h"
+#include "../w1_int.h"
+#include "dscore.h"
+
+static struct ds_device *ds_dev;
+static struct w1_bus_master *ds_bus_master;
+
+static u8 ds9490r_touch_bit(void *data, u8 bit)
+{
+ u8 ret;
+ struct ds_device *dev = data;
+
+ if (ds_touch_bit(dev, bit, &ret))
+ return 0;
+
+ return ret;
+}
+
+static void ds9490r_write_bit(void *data, u8 bit)
+{
+ struct ds_device *dev = data;
+
+ ds_write_bit(dev, bit);
+}
+
+static void ds9490r_write_byte(void *data, u8 byte)
+{
+ struct ds_device *dev = data;
+
+ ds_write_byte(dev, byte);
+}
+
+static u8 ds9490r_read_bit(void *data)
+{
+ struct ds_device *dev = data;
+ int err;
+ u8 bit = 0;
+
+ err = ds_touch_bit(dev, 1, &bit);
+ if (err)
+ return 0;
+ //err = ds_read_bit(dev, &bit);
+ //if (err)
+ // return 0;
+
+ return bit & 1;
+}
+
+static u8 ds9490r_read_byte(void *data)
+{
+ struct ds_device *dev = data;
+ int err;
+ u8 byte = 0;
+
+ err = ds_read_byte(dev, &byte);
+ if (err)
+ return 0;
+
+ return byte;
+}
+
+static void ds9490r_write_block(void *data, const u8 *buf, int len)
+{
+ struct ds_device *dev = data;
+
+ ds_write_block(dev, (u8 *)buf, len);
+}
+
+static u8 ds9490r_read_block(void *data, u8 *buf, int len)
+{
+ struct ds_device *dev = data;
+ int err;
+
+ err = ds_read_block(dev, buf, len);
+ if (err < 0)
+ return 0;
+
+ return len;
+}
+
+static u8 ds9490r_reset(void *data)
+{
+ struct ds_device *dev = data;
+ struct ds_status st;
+ int err;
+
+ memset(&st, 0, sizeof(st));
+
+ err = ds_reset(dev, &st);
+ if (err)
+ return 1;
+
+ return 0;
+}
+
+static int __devinit ds_w1_init(void)
+{
+ int err;
+
+ ds_bus_master = kmalloc(sizeof(*ds_bus_master), GFP_KERNEL);
+ if (!ds_bus_master) {
+ printk(KERN_ERR "Failed to allocate DS9490R USB<->W1 bus_master structure.\n");
+ return -ENOMEM;
+ }
+
+ ds_dev = ds_get_device();
+ if (!ds_dev) {
+ printk(KERN_ERR "DS9490R is not registered.\n");
+ err = -ENODEV;
+ goto err_out_free_bus_master;
+ }
+
+ memset(ds_bus_master, 0, sizeof(*ds_bus_master));
+
+ ds_bus_master->data = ds_dev;
+ ds_bus_master->touch_bit = &ds9490r_touch_bit;
+ ds_bus_master->read_bit = &ds9490r_read_bit;
+ ds_bus_master->write_bit = &ds9490r_write_bit;
+ ds_bus_master->read_byte = &ds9490r_read_byte;
+ ds_bus_master->write_byte = &ds9490r_write_byte;
+ ds_bus_master->read_block = &ds9490r_read_block;
+ ds_bus_master->write_block = &ds9490r_write_block;
+ ds_bus_master->reset_bus = &ds9490r_reset;
+
+ err = w1_add_master_device(ds_bus_master);
+ if (err)
+ goto err_out_put_device;
+
+ return 0;
+
+err_out_put_device:
+ ds_put_device(ds_dev);
+err_out_free_bus_master:
+ kfree(ds_bus_master);
+
+ return err;
+}
+
+static void __devexit ds_w1_fini(void)
+{
+ w1_remove_master_device(ds_bus_master);
+ ds_put_device(ds_dev);
+ kfree(ds_bus_master);
+}
+
+module_init(ds_w1_init);
+module_exit(ds_w1_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
--- /dev/null
+/*
+ * dscore.c
+ *
+ * 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
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/usb.h>
+
+#include "dscore.h"
+
+static struct usb_device_id ds_id_table [] = {
+ { USB_DEVICE(0x04fa, 0x2490) },
+ { },
+};
+MODULE_DEVICE_TABLE(usb, ds_id_table);
+
+static int ds_probe(struct usb_interface *, const struct usb_device_id *);
+static void ds_disconnect(struct usb_interface *);
+
+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);
+static int ds_start_pulse(struct ds_device *, int);
+int ds_reset(struct ds_device *, struct ds_status *);
+struct ds_device * ds_get_device(void);
+void ds_put_device(struct ds_device *);
+
+static inline void ds_dump_status(unsigned char *, unsigned char *, int);
+static int ds_send_control(struct ds_device *, u16, u16);
+static int ds_send_control_mode(struct ds_device *, u16, u16);
+static int ds_send_control_cmd(struct ds_device *, u16, u16);
+
+
+static struct usb_driver ds_driver = {
+ .name = "DS9490R",
+ .probe = ds_probe,
+ .disconnect = ds_disconnect,
+ .id_table = ds_id_table,
+};
+
+static struct ds_device *ds_dev;
+
+struct ds_device * ds_get_device(void)
+{
+ if (ds_dev)
+ atomic_inc(&ds_dev->refcnt);
+ return ds_dev;
+}
+
+void ds_put_device(struct ds_device *dev)
+{
+ atomic_dec(&dev->refcnt);
+}
+
+static int ds_send_control_cmd(struct ds_device *dev, u16 value, u16 index)
+{
+ int err;
+
+ err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
+ CONTROL_CMD, 0x40, value, index, NULL, 0, 1000);
+ if (err < 0) {
+ printk(KERN_ERR "Failed to send command control message %x.%x: err=%d.\n",
+ value, index, err);
+ return err;
+ }
+
+ return err;
+}
+
+static int ds_send_control_mode(struct ds_device *dev, u16 value, u16 index)
+{
+ int err;
+
+ err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
+ MODE_CMD, 0x40, value, index, NULL, 0, 1000);
+ if (err < 0) {
+ printk(KERN_ERR "Failed to send mode control message %x.%x: err=%d.\n",
+ value, index, err);
+ return err;
+ }
+
+ return err;
+}
+
+static int ds_send_control(struct ds_device *dev, u16 value, u16 index)
+{
+ int err;
+
+ err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),
+ COMM_CMD, 0x40, value, index, NULL, 0, 1000);
+ if (err < 0) {
+ printk(KERN_ERR "Failed to send control message %x.%x: err=%d.\n",
+ value, index, err);
+ return err;
+ }
+
+ return err;
+}
+
+static inline void ds_dump_status(unsigned char *buf, unsigned char *str, int off)
+{
+ printk("%45s: %8x\n", str, buf[off]);
+}
+
+static int ds_recv_status_nodump(struct ds_device *dev, struct ds_status *st,
+ unsigned char *buf, int size)
+{
+ int count, err;
+
+ memset(st, 0, sizeof(st));
+
+ count = 0;
+ err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_STATUS]), buf, size, &count, 100);
+ if (err < 0) {
+ printk(KERN_ERR "Failed to read 1-wire data from 0x%x: err=%d.\n", dev->ep[EP_STATUS], err);
+ return err;
+ }
+
+ if (count >= sizeof(*st))
+ memcpy(st, buf, sizeof(*st));
+
+ return count;
+}
+
+static int ds_recv_status(struct ds_device *dev, struct ds_status *st)
+{
+ unsigned char buf[64];
+ int count, err = 0, i;
+
+ memcpy(st, buf, sizeof(*st));
+
+ count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
+ if (count < 0)
+ return err;
+
+ printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], count);
+ for (i=0; i<count; ++i)
+ printk("%02x ", buf[i]);
+ printk("\n");
+
+ if (count >= 16) {
+ ds_dump_status(buf, "enable flag", 0);
+ ds_dump_status(buf, "1-wire speed", 1);
+ ds_dump_status(buf, "strong pullup duration", 2);
+ ds_dump_status(buf, "programming pulse duration", 3);
+ ds_dump_status(buf, "pulldown slew rate control", 4);
+ ds_dump_status(buf, "write-1 low time", 5);
+ ds_dump_status(buf, "data sample offset/write-0 recovery time", 6);
+ ds_dump_status(buf, "reserved (test register)", 7);
+ ds_dump_status(buf, "device status flags", 8);
+ ds_dump_status(buf, "communication command byte 1", 9);
+ ds_dump_status(buf, "communication command byte 2", 10);
+ ds_dump_status(buf, "communication command buffer status", 11);
+ ds_dump_status(buf, "1-wire data output buffer status", 12);
+ ds_dump_status(buf, "1-wire data input buffer status", 13);
+ ds_dump_status(buf, "reserved", 14);
+ ds_dump_status(buf, "reserved", 15);
+ }
+
+ memcpy(st, buf, sizeof(*st));
+
+ if (st->status & ST_EPOF) {
+ printk(KERN_INFO "Resetting device after ST_EPOF.\n");
+ err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
+ if (err)
+ return err;
+ count = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
+ if (count < 0)
+ return err;
+ }
+#if 0
+ if (st->status & ST_IDLE) {
+ printk(KERN_INFO "Resetting pulse after ST_IDLE.\n");
+ err = ds_start_pulse(dev, PULLUP_PULSE_DURATION);
+ if (err)
+ return err;
+ }
+#endif
+
+ return err;
+}
+
+static int ds_recv_data(struct ds_device *dev, unsigned char *buf, int size)
+{
+ int count, err;
+ struct ds_status st;
+
+ count = 0;
+ err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]),
+ buf, size, &count, 1000);
+ if (err < 0) {
+ printk(KERN_INFO "Clearing ep0x%x.\n", dev->ep[EP_DATA_IN]);
+ usb_clear_halt(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]));
+ ds_recv_status(dev, &st);
+ return err;
+ }
+
+#if 0
+ {
+ int i;
+
+ printk("%s: count=%d: ", __func__, count);
+ for (i=0; i<count; ++i)
+ printk("%02x ", buf[i]);
+ printk("\n");
+ }
+#endif
+ return count;
+}
+
+static int ds_send_data(struct ds_device *dev, unsigned char *buf, int len)
+{
+ int count, err;
+
+ count = 0;
+ err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, 1000);
+ if (err < 0) {
+ printk(KERN_ERR "Failed to read 1-wire data from 0x02: err=%d.\n", err);
+ return err;
+ }
+
+ return err;
+}
+
+#if 0
+
+int ds_stop_pulse(struct ds_device *dev, int limit)
+{
+ struct ds_status st;
+ int count = 0, err = 0;
+ u8 buf[0x20];
+
+ do {
+ err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0);
+ if (err)
+ break;
+ err = ds_send_control(dev, CTL_RESUME_EXE, 0);
+ if (err)
+ break;
+ err = ds_recv_status_nodump(dev, &st, buf, sizeof(buf));
+ if (err)
+ break;
+
+ if ((st.status & ST_SPUA) == 0) {
+ err = ds_send_control_mode(dev, MOD_PULSE_EN, 0);
+ if (err)
+ break;
+ }
+ } while(++count < limit);
+
+ return err;
+}
+
+int ds_detect(struct ds_device *dev, struct ds_status *st)
+{
+ int err;
+
+ err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
+ if (err)
+ return err;
+
+ err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0);
+ if (err)
+ return err;
+
+ err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40);
+ if (err)
+ return err;
+
+ err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG);
+ if (err)
+ return err;
+
+ err = ds_recv_status(dev, st);
+
+ return err;
+}
+
+#endif /* 0 */
+
+static int ds_wait_status(struct ds_device *dev, struct ds_status *st)
+{
+ u8 buf[0x20];
+ int err, count = 0;
+
+ do {
+ err = ds_recv_status_nodump(dev, st, buf, sizeof(buf));
+#if 0
+ if (err >= 0) {
+ int i;
+ printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err);
+ for (i=0; i<err; ++i)
+ printk("%02x ", buf[i]);
+ printk("\n");
+ }
+#endif
+ } while(!(buf[0x08] & 0x20) && !(err < 0) && ++count < 100);
+
+
+ if (((err > 16) && (buf[0x10] & 0x01)) || count >= 100 || err < 0) {
+ ds_recv_status(dev, st);
+ return -1;
+ } else
+ return 0;
+}
+
+int ds_reset(struct ds_device *dev, struct ds_status *st)
+{
+ int err;
+
+ //err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_F | COMM_IM | COMM_SE, SPEED_FLEXIBLE);
+ err = ds_send_control(dev, 0x43, SPEED_NORMAL);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, st);
+#if 0
+ if (st->command_buffer_status) {
+ printk(KERN_INFO "Short circuit.\n");
+ return -EIO;
+ }
+#endif
+
+ return 0;
+}
+
+#if 0
+int ds_set_speed(struct ds_device *dev, int speed)
+{
+ int err;
+
+ if (speed != SPEED_NORMAL && speed != SPEED_FLEXIBLE && speed != SPEED_OVERDRIVE)
+ return -EINVAL;
+
+ if (speed != SPEED_OVERDRIVE)
+ speed = SPEED_FLEXIBLE;
+
+ speed &= 0xff;
+
+ err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed);
+ if (err)
+ return err;
+
+ return err;
+}
+#endif /* 0 */
+
+static int ds_start_pulse(struct ds_device *dev, int delay)
+{
+ int err;
+ u8 del = 1 + (u8)(delay >> 4);
+ struct ds_status st;
+
+#if 0
+ err = ds_stop_pulse(dev, 10);
+ if (err)
+ return err;
+
+ err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
+ if (err)
+ return err;
+#endif
+ err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del);
+ if (err)
+ return err;
+
+ err = ds_send_control(dev, COMM_PULSE | COMM_IM | COMM_F, 0);
+ if (err)
+ return err;
+
+ mdelay(delay);
+
+ ds_wait_status(dev, &st);
+
+ return err;
+}
+
+int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit)
+{
+ int err, count;
+ struct ds_status st;
+ u16 value = (COMM_BIT_IO | COMM_IM) | ((bit) ? COMM_D : 0);
+ u16 cmd;
+
+ err = ds_send_control(dev, value, 0);
+ if (err)
+ return err;
+
+ count = 0;
+ do {
+ err = ds_wait_status(dev, &st);
+ if (err)
+ return err;
+
+ cmd = st.command0 | (st.command1 << 8);
+ } while (cmd != value && ++count < 10);
+
+ if (err < 0 || count >= 10) {
+ printk(KERN_ERR "Failed to obtain status.\n");
+ return -EINVAL;
+ }
+
+ err = ds_recv_data(dev, tbit, sizeof(*tbit));
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+int ds_write_bit(struct ds_device *dev, u8 bit)
+{
+ int err;
+ struct ds_status st;
+
+ err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit) ? COMM_D : 0, 0);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ return 0;
+}
+
+int ds_write_byte(struct ds_device *dev, u8 byte)
+{
+ int err;
+ struct ds_status st;
+ u8 rbyte;
+
+ err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | COMM_SPU, byte);
+ if (err)
+ return err;
+
+ err = ds_wait_status(dev, &st);
+ if (err)
+ return err;
+
+ err = ds_recv_data(dev, &rbyte, sizeof(rbyte));
+ if (err < 0)
+ return err;
+
+ ds_start_pulse(dev, PULLUP_PULSE_DURATION);
+
+ return !(byte == rbyte);
+}
+
+int ds_read_bit(struct ds_device *dev, u8 *bit)
+{
+ int err;
+
+ err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_SPUE);
+ if (err)
+ return err;
+
+ err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_SPU | COMM_D, 0);
+ if (err)
+ return err;
+
+ err = ds_recv_data(dev, bit, sizeof(*bit));
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+int ds_read_byte(struct ds_device *dev, u8 *byte)
+{
+ int err;
+ struct ds_status st;
+
+ err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM , 0xff);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ err = ds_recv_data(dev, byte, sizeof(*byte));
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+int ds_read_block(struct ds_device *dev, u8 *buf, int len)
+{
+ struct ds_status st;
+ int err;
+
+ if (len > 64*1024)
+ return -E2BIG;
+
+ memset(buf, 0xFF, len);
+
+ err = ds_send_data(dev, buf, len);
+ if (err < 0)
+ return err;
+
+ err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ memset(buf, 0x00, len);
+ err = ds_recv_data(dev, buf, len);
+
+ return err;
+}
+
+int ds_write_block(struct ds_device *dev, u8 *buf, int len)
+{
+ int err;
+ struct ds_status st;
+
+ err = ds_send_data(dev, buf, len);
+ if (err < 0)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ err = ds_recv_data(dev, buf, len);
+ if (err < 0)
+ return err;
+
+ ds_start_pulse(dev, PULLUP_PULSE_DURATION);
+
+ return !(err == len);
+}
+
+#if 0
+
+int ds_search(struct ds_device *dev, u64 init, u64 *buf, u8 id_number, int conditional_search)
+{
+ int err;
+ u16 value, index;
+ struct ds_status st;
+
+ memset(buf, 0, sizeof(buf));
+
+ err = ds_send_data(ds_dev, (unsigned char *)&init, 8);
+ if (err)
+ return err;
+
+ ds_wait_status(ds_dev, &st);
+
+ value = COMM_SEARCH_ACCESS | COMM_IM | COMM_SM | COMM_F | COMM_RTS;
+ index = (conditional_search ? 0xEC : 0xF0) | (id_number << 8);
+ err = ds_send_control(ds_dev, value, index);
+ if (err)
+ return err;
+
+ ds_wait_status(ds_dev, &st);
+
+ err = ds_recv_data(ds_dev, (unsigned char *)buf, 8*id_number);
+ if (err < 0)
+ return err;
+
+ return err/8;
+}
+
+int ds_match_access(struct ds_device *dev, u64 init)
+{
+ int err;
+ struct ds_status st;
+
+ err = ds_send_data(dev, (unsigned char *)&init, sizeof(init));
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ return 0;
+}
+
+int ds_set_path(struct ds_device *dev, u64 init)
+{
+ int err;
+ struct ds_status st;
+ u8 buf[9];
+
+ memcpy(buf, &init, 8);
+ buf[8] = BRANCH_MAIN;
+
+ err = ds_send_data(dev, buf, sizeof(buf));
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0);
+ if (err)
+ return err;
+
+ ds_wait_status(dev, &st);
+
+ return 0;
+}
+
+#endif /* 0 */
+
+static int ds_probe(struct usb_interface *intf,
+ const struct usb_device_id *udev_id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_host_interface *iface_desc;
+ int i, err;
+
+ ds_dev = kmalloc(sizeof(struct ds_device), GFP_KERNEL);
+ if (!ds_dev) {
+ printk(KERN_INFO "Failed to allocate new DS9490R structure.\n");
+ return -ENOMEM;
+ }
+
+ ds_dev->udev = usb_get_dev(udev);
+ usb_set_intfdata(intf, ds_dev);
+
+ err = usb_set_interface(ds_dev->udev, intf->altsetting[0].desc.bInterfaceNumber, 3);
+ if (err) {
+ printk(KERN_ERR "Failed to set alternative setting 3 for %d interface: err=%d.\n",
+ intf->altsetting[0].desc.bInterfaceNumber, err);
+ return err;
+ }
+
+ err = usb_reset_configuration(ds_dev->udev);
+ if (err) {
+ printk(KERN_ERR "Failed to reset configuration: err=%d.\n", err);
+ return err;
+ }
+
+ iface_desc = &intf->altsetting[0];
+ if (iface_desc->desc.bNumEndpoints != NUM_EP-1) {
+ printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints);
+ return -ENODEV;
+ }
+
+ atomic_set(&ds_dev->refcnt, 0);
+ memset(ds_dev->ep, 0, sizeof(ds_dev->ep));
+
+ /*
+ * This loop doesn'd show control 0 endpoint,
+ * so we will fill only 1-3 endpoints entry.
+ */
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+
+ ds_dev->ep[i+1] = endpoint->bEndpointAddress;
+
+ printk("%d: addr=%x, size=%d, dir=%s, type=%x\n",
+ i, endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize),
+ (endpoint->bEndpointAddress & USB_DIR_IN)?"IN":"OUT",
+ endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
+ }
+
+#if 0
+ {
+ int err, i;
+ u64 buf[3];
+ u64 init=0xb30000002078ee81ull;
+ struct ds_status st;
+
+ ds_reset(ds_dev, &st);
+ err = ds_search(ds_dev, init, buf, 3, 0);
+ if (err < 0)
+ return err;
+ for (i=0; i<err; ++i)
+ printk("%d: %llx\n", i, buf[i]);
+
+ printk("Resetting...\n");
+ ds_reset(ds_dev, &st);
+ printk("Setting path for %llx.\n", init);
+ err = ds_set_path(ds_dev, init);
+ if (err)
+ return err;
+ printk("Calling MATCH_ACCESS.\n");
+ err = ds_match_access(ds_dev, init);
+ if (err)
+ return err;
+
+ printk("Searching the bus...\n");
+ err = ds_search(ds_dev, init, buf, 3, 0);
+
+ printk("ds_search() returned %d\n", err);
+
+ if (err < 0)
+ return err;
+ for (i=0; i<err; ++i)
+ printk("%d: %llx\n", i, buf[i]);
+
+ return 0;
+ }
+#endif
+
+ return 0;
+}
+
+static void ds_disconnect(struct usb_interface *intf)
+{
+ struct ds_device *dev;
+
+ dev = usb_get_intfdata(intf);
+ usb_set_intfdata(intf, NULL);
+
+ while (atomic_read(&dev->refcnt)) {
+ printk(KERN_INFO "Waiting for DS to become free: refcnt=%d.\n",
+ atomic_read(&dev->refcnt));
+
+ if (msleep_interruptible(1000))
+ flush_signals(current);
+ }
+
+ usb_put_dev(dev->udev);
+ kfree(dev);
+ ds_dev = NULL;
+}
+
+static int ds_init(void)
+{
+ int err;
+
+ err = usb_register(&ds_driver);
+ if (err) {
+ printk(KERN_INFO "Failed to register DS9490R USB device: err=%d.\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void ds_fini(void)
+{
+ usb_deregister(&ds_driver);
+}
+
+module_init(ds_init);
+module_exit(ds_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+
+EXPORT_SYMBOL(ds_touch_bit);
+EXPORT_SYMBOL(ds_read_byte);
+EXPORT_SYMBOL(ds_read_bit);
+EXPORT_SYMBOL(ds_read_block);
+EXPORT_SYMBOL(ds_write_byte);
+EXPORT_SYMBOL(ds_write_bit);
+EXPORT_SYMBOL(ds_write_block);
+EXPORT_SYMBOL(ds_reset);
+EXPORT_SYMBOL(ds_get_device);
+EXPORT_SYMBOL(ds_put_device);
+
+/*
+ * This functions can be used for EEPROM programming,
+ * when driver will be included into mainline this will
+ * require uncommenting.
+ */
+#if 0
+EXPORT_SYMBOL(ds_start_pulse);
+EXPORT_SYMBOL(ds_set_speed);
+EXPORT_SYMBOL(ds_detect);
+EXPORT_SYMBOL(ds_stop_pulse);
+EXPORT_SYMBOL(ds_search);
+#endif
--- /dev/null
+/*
+ * 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_reset(struct ds_device *, struct ds_status *);
+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 */
+
--- /dev/null
+/*
+ * matrox_w1.c
+ *
+ * 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
+ */
+
+#include <asm/types.h>
+#include <asm/atomic.h>
+#include <asm/io.h>
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/pci_ids.h>
+#include <linux/pci.h>
+#include <linux/timer.h>
+
+#include "../w1.h"
+#include "../w1_int.h"
+#include "../w1_log.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for transport(Dallas 1-wire prtocol) over VGA DDC(matrox gpio).");
+
+static struct pci_device_id matrox_w1_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G400) },
+ { },
+};
+MODULE_DEVICE_TABLE(pci, matrox_w1_tbl);
+
+static int __devinit matrox_w1_probe(struct pci_dev *, const struct pci_device_id *);
+static void __devexit matrox_w1_remove(struct pci_dev *);
+
+static struct pci_driver matrox_w1_pci_driver = {
+ .name = "matrox_w1",
+ .id_table = matrox_w1_tbl,
+ .probe = matrox_w1_probe,
+ .remove = __devexit_p(matrox_w1_remove),
+};
+
+/*
+ * Matrox G400 DDC registers.
+ */
+
+#define MATROX_G400_DDC_CLK (1<<4)
+#define MATROX_G400_DDC_DATA (1<<1)
+
+#define MATROX_BASE 0x3C00
+#define MATROX_STATUS 0x1e14
+
+#define MATROX_PORT_INDEX_OFFSET 0x00
+#define MATROX_PORT_DATA_OFFSET 0x0A
+
+#define MATROX_GET_CONTROL 0x2A
+#define MATROX_GET_DATA 0x2B
+#define MATROX_CURSOR_CTL 0x06
+
+struct matrox_device
+{
+ void __iomem *base_addr;
+ void __iomem *port_index;
+ void __iomem *port_data;
+ u8 data_mask;
+
+ unsigned long phys_addr;
+ void __iomem *virt_addr;
+ unsigned long found;
+
+ struct w1_bus_master *bus_master;
+};
+
+static u8 matrox_w1_read_ddc_bit(void *);
+static void matrox_w1_write_ddc_bit(void *, u8);
+
+/*
+ * These functions read and write DDC Data bit.
+ *
+ * Using tristate pins, since i can't find any open-drain pin in whole motherboard.
+ * Unfortunately we can't connect to Intel's 82801xx IO controller
+ * since we don't know motherboard schema, wich has pretty unused(may be not) GPIO.
+ *
+ * I've heard that PIIX also has open drain pin.
+ *
+ * Port mapping.
+ */
+static __inline__ u8 matrox_w1_read_reg(struct matrox_device *dev, u8 reg)
+{
+ u8 ret;
+
+ writeb(reg, dev->port_index);
+ ret = readb(dev->port_data);
+ barrier();
+
+ return ret;
+}
+
+static __inline__ void matrox_w1_write_reg(struct matrox_device *dev, u8 reg, u8 val)
+{
+ writeb(reg, dev->port_index);
+ writeb(val, dev->port_data);
+ wmb();
+}
+
+static void matrox_w1_write_ddc_bit(void *data, u8 bit)
+{
+ u8 ret;
+ struct matrox_device *dev = data;
+
+ if (bit)
+ bit = 0;
+ else
+ bit = dev->data_mask;
+
+ ret = matrox_w1_read_reg(dev, MATROX_GET_CONTROL);
+ matrox_w1_write_reg(dev, MATROX_GET_CONTROL, ((ret & ~dev->data_mask) | bit));
+ matrox_w1_write_reg(dev, MATROX_GET_DATA, 0x00);
+}
+
+static u8 matrox_w1_read_ddc_bit(void *data)
+{
+ u8 ret;
+ struct matrox_device *dev = data;
+
+ ret = matrox_w1_read_reg(dev, MATROX_GET_DATA);
+
+ return ret;
+}
+
+static void matrox_w1_hw_init(struct matrox_device *dev)
+{
+ matrox_w1_write_reg(dev, MATROX_GET_DATA, 0xFF);
+ matrox_w1_write_reg(dev, MATROX_GET_CONTROL, 0x00);
+}
+
+static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct matrox_device *dev;
+ int err;
+
+ assert(pdev != NULL);
+ assert(ent != NULL);
+
+ if (pdev->vendor != PCI_VENDOR_ID_MATROX || pdev->device != PCI_DEVICE_ID_MATROX_G400)
+ return -ENODEV;
+
+ dev = kmalloc(sizeof(struct matrox_device) +
+ sizeof(struct w1_bus_master), GFP_KERNEL);
+ if (!dev) {
+ dev_err(&pdev->dev,
+ "%s: Failed to create new matrox_device object.\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
+
+ dev->bus_master = (struct w1_bus_master *)(dev + 1);
+
+ /*
+ * True for G400, for some other we need resource 0, see drivers/video/matrox/matroxfb_base.c
+ */
+
+ dev->phys_addr = pci_resource_start(pdev, 1);
+
+ dev->virt_addr = ioremap_nocache(dev->phys_addr, 16384);
+ if (!dev->virt_addr) {
+ dev_err(&pdev->dev, "%s: failed to ioremap(0x%lx, %d).\n",
+ __func__, dev->phys_addr, 16384);
+ err = -EIO;
+ goto err_out_free_device;
+ }
+
+ dev->base_addr = dev->virt_addr + MATROX_BASE;
+ dev->port_index = dev->base_addr + MATROX_PORT_INDEX_OFFSET;
+ dev->port_data = dev->base_addr + MATROX_PORT_DATA_OFFSET;
+ dev->data_mask = (MATROX_G400_DDC_DATA);
+
+ matrox_w1_hw_init(dev);
+
+ dev->bus_master->data = dev;
+ dev->bus_master->read_bit = &matrox_w1_read_ddc_bit;
+ dev->bus_master->write_bit = &matrox_w1_write_ddc_bit;
+
+ err = w1_add_master_device(dev->bus_master);
+ if (err)
+ goto err_out_free_device;
+
+ pci_set_drvdata(pdev, dev);
+
+ dev->found = 1;
+
+ dev_info(&pdev->dev, "Matrox G400 GPIO transport layer for 1-wire.\n");
+
+ return 0;
+
+err_out_free_device:
+ kfree(dev);
+
+ return err;
+}
+
+static void __devexit matrox_w1_remove(struct pci_dev *pdev)
+{
+ struct matrox_device *dev = pci_get_drvdata(pdev);
+
+ assert(dev != NULL);
+
+ if (dev->found) {
+ w1_remove_master_device(dev->bus_master);
+ iounmap(dev->virt_addr);
+ }
+ kfree(dev);
+}
+
+static int __init matrox_w1_init(void)
+{
+ return pci_register_driver(&matrox_w1_pci_driver);
+}
+
+static void __exit matrox_w1_fini(void)
+{
+ pci_unregister_driver(&matrox_w1_pci_driver);
+}
+
+module_init(matrox_w1_init);
+module_exit(matrox_w1_fini);
+++ /dev/null
-/*
- * matrox_w1.c
- *
- * 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
- */
-
-#include <asm/atomic.h>
-#include <asm/types.h>
-#include <asm/io.h>
-
-#include <linux/delay.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/timer.h>
-#include <linux/slab.h>
-#include <linux/pci_ids.h>
-#include <linux/pci.h>
-#include <linux/timer.h>
-
-#include "w1.h"
-#include "w1_int.h"
-#include "w1_log.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
-MODULE_DESCRIPTION("Driver for transport(Dallas 1-wire prtocol) over VGA DDC(matrox gpio).");
-
-static struct pci_device_id matrox_w1_tbl[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G400) },
- { },
-};
-MODULE_DEVICE_TABLE(pci, matrox_w1_tbl);
-
-static int __devinit matrox_w1_probe(struct pci_dev *, const struct pci_device_id *);
-static void __devexit matrox_w1_remove(struct pci_dev *);
-
-static struct pci_driver matrox_w1_pci_driver = {
- .name = "matrox_w1",
- .id_table = matrox_w1_tbl,
- .probe = matrox_w1_probe,
- .remove = __devexit_p(matrox_w1_remove),
-};
-
-/*
- * Matrox G400 DDC registers.
- */
-
-#define MATROX_G400_DDC_CLK (1<<4)
-#define MATROX_G400_DDC_DATA (1<<1)
-
-#define MATROX_BASE 0x3C00
-#define MATROX_STATUS 0x1e14
-
-#define MATROX_PORT_INDEX_OFFSET 0x00
-#define MATROX_PORT_DATA_OFFSET 0x0A
-
-#define MATROX_GET_CONTROL 0x2A
-#define MATROX_GET_DATA 0x2B
-#define MATROX_CURSOR_CTL 0x06
-
-struct matrox_device
-{
- void __iomem *base_addr;
- void __iomem *port_index;
- void __iomem *port_data;
- u8 data_mask;
-
- unsigned long phys_addr;
- void __iomem *virt_addr;
- unsigned long found;
-
- struct w1_bus_master *bus_master;
-};
-
-static u8 matrox_w1_read_ddc_bit(void *);
-static void matrox_w1_write_ddc_bit(void *, u8);
-
-/*
- * These functions read and write DDC Data bit.
- *
- * Using tristate pins, since i can't find any open-drain pin in whole motherboard.
- * Unfortunately we can't connect to Intel's 82801xx IO controller
- * since we don't know motherboard schema, wich has pretty unused(may be not) GPIO.
- *
- * I've heard that PIIX also has open drain pin.
- *
- * Port mapping.
- */
-static __inline__ u8 matrox_w1_read_reg(struct matrox_device *dev, u8 reg)
-{
- u8 ret;
-
- writeb(reg, dev->port_index);
- ret = readb(dev->port_data);
- barrier();
-
- return ret;
-}
-
-static __inline__ void matrox_w1_write_reg(struct matrox_device *dev, u8 reg, u8 val)
-{
- writeb(reg, dev->port_index);
- writeb(val, dev->port_data);
- wmb();
-}
-
-static void matrox_w1_write_ddc_bit(void *data, u8 bit)
-{
- u8 ret;
- struct matrox_device *dev = data;
-
- if (bit)
- bit = 0;
- else
- bit = dev->data_mask;
-
- ret = matrox_w1_read_reg(dev, MATROX_GET_CONTROL);
- matrox_w1_write_reg(dev, MATROX_GET_CONTROL, ((ret & ~dev->data_mask) | bit));
- matrox_w1_write_reg(dev, MATROX_GET_DATA, 0x00);
-}
-
-static u8 matrox_w1_read_ddc_bit(void *data)
-{
- u8 ret;
- struct matrox_device *dev = data;
-
- ret = matrox_w1_read_reg(dev, MATROX_GET_DATA);
-
- return ret;
-}
-
-static void matrox_w1_hw_init(struct matrox_device *dev)
-{
- matrox_w1_write_reg(dev, MATROX_GET_DATA, 0xFF);
- matrox_w1_write_reg(dev, MATROX_GET_CONTROL, 0x00);
-}
-
-static int __devinit matrox_w1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- struct matrox_device *dev;
- int err;
-
- assert(pdev != NULL);
- assert(ent != NULL);
-
- if (pdev->vendor != PCI_VENDOR_ID_MATROX || pdev->device != PCI_DEVICE_ID_MATROX_G400)
- return -ENODEV;
-
- dev = kmalloc(sizeof(struct matrox_device) +
- sizeof(struct w1_bus_master), GFP_KERNEL);
- if (!dev) {
- dev_err(&pdev->dev,
- "%s: Failed to create new matrox_device object.\n",
- __func__);
- return -ENOMEM;
- }
-
- memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
-
- dev->bus_master = (struct w1_bus_master *)(dev + 1);
-
- /*
- * True for G400, for some other we need resource 0, see drivers/video/matrox/matroxfb_base.c
- */
-
- dev->phys_addr = pci_resource_start(pdev, 1);
-
- dev->virt_addr = ioremap_nocache(dev->phys_addr, 16384);
- if (!dev->virt_addr) {
- dev_err(&pdev->dev, "%s: failed to ioremap(0x%lx, %d).\n",
- __func__, dev->phys_addr, 16384);
- err = -EIO;
- goto err_out_free_device;
- }
-
- dev->base_addr = dev->virt_addr + MATROX_BASE;
- dev->port_index = dev->base_addr + MATROX_PORT_INDEX_OFFSET;
- dev->port_data = dev->base_addr + MATROX_PORT_DATA_OFFSET;
- dev->data_mask = (MATROX_G400_DDC_DATA);
-
- matrox_w1_hw_init(dev);
-
- dev->bus_master->data = dev;
- dev->bus_master->read_bit = &matrox_w1_read_ddc_bit;
- dev->bus_master->write_bit = &matrox_w1_write_ddc_bit;
-
- err = w1_add_master_device(dev->bus_master);
- if (err)
- goto err_out_free_device;
-
- pci_set_drvdata(pdev, dev);
-
- dev->found = 1;
-
- dev_info(&pdev->dev, "Matrox G400 GPIO transport layer for 1-wire.\n");
-
- return 0;
-
-err_out_free_device:
- kfree(dev);
-
- return err;
-}
-
-static void __devexit matrox_w1_remove(struct pci_dev *pdev)
-{
- struct matrox_device *dev = pci_get_drvdata(pdev);
-
- assert(dev != NULL);
-
- if (dev->found) {
- w1_remove_master_device(dev->bus_master);
- iounmap(dev->virt_addr);
- }
- kfree(dev);
-}
-
-static int __init matrox_w1_init(void)
-{
- return pci_register_driver(&matrox_w1_pci_driver);
-}
-
-static void __exit matrox_w1_fini(void)
-{
- pci_unregister_driver(&matrox_w1_pci_driver);
-}
-
-module_init(matrox_w1_init);
-module_exit(matrox_w1_fini);
--- /dev/null
+#
+# 1-wire slaves configuration
+#
+
+menu "1-wire Slaves"
+ depends on W1
+
+config W1_SLAVE_THERM
+ tristate "Thermal family implementation"
+ depends on W1
+ help
+ Say Y here if you want to connect 1-wire thermal sensors to you
+ wire.
+
+config W1_SLAVE_SMEM
+ tristate "Simple 64bit memory family implementation"
+ depends on W1
+ help
+ Say Y here if you want to connect 1-wire
+ simple 64bit memory rom(ds2401/ds2411/ds1990*) to you wire.
+
+config W1_SLAVE_DS2433
+ tristate "4kb EEPROM family support (DS2433)"
+ depends on W1
+ help
+ Say Y here if you want to use a 1-wire
+ 4kb EEPROM family device (DS2433).
+
+config W1_SLAVE_DS2433_CRC
+ bool "Protect DS2433 data with a CRC16"
+ depends on W1_DS2433
+ select CRC16
+ help
+ Say Y here to protect DS2433 data with a CRC16.
+ Each block has 30 bytes of data and a two byte CRC16.
+ Full block writes are only allowed if the CRC is valid.
+
+endmenu
--- /dev/null
+#
+# Makefile for the Dallas's 1-wire slaves.
+#
+
+ifeq ($(CONFIG_W1_SLAVE_DS2433_CRC), y)
+EXTRA_CFLAGS += -DCONFIG_W1_F23_CRC
+endif
+
+obj-$(CONFIG_W1_SLAVE_THERM) += w1_therm.o
+obj-$(CONFIG_W1_SLAVE_SMEM) += w1_smem.o
+obj-$(CONFIG_W1_SLAVE_DS2433) += w1_ds2433.o
+
--- /dev/null
+/*
+ * w1_ds2433.c - w1 family 23 (DS2433) driver
+ *
+ * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#ifdef CONFIG_W1_F23_CRC
+#include <linux/crc16.h>
+
+#define CRC16_INIT 0
+#define CRC16_VALID 0xb001
+
+#endif
+
+#include "../w1.h"
+#include "../w1_io.h"
+#include "../w1_int.h"
+#include "../w1_family.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ben Gardner <bgardner@wabtec.com>");
+MODULE_DESCRIPTION("w1 family 23 driver for DS2433, 4kb EEPROM");
+
+#define W1_EEPROM_SIZE 512
+#define W1_PAGE_COUNT 16
+#define W1_PAGE_SIZE 32
+#define W1_PAGE_BITS 5
+#define W1_PAGE_MASK 0x1F
+
+#define W1_F23_TIME 300
+
+#define W1_F23_READ_EEPROM 0xF0
+#define W1_F23_WRITE_SCRATCH 0x0F
+#define W1_F23_READ_SCRATCH 0xAA
+#define W1_F23_COPY_SCRATCH 0x55
+
+struct w1_f23_data {
+ u8 memory[W1_EEPROM_SIZE];
+ u32 validcrc;
+};
+
+/**
+ * Check the file size bounds and adjusts count as needed.
+ * This would not be needed if the file size didn't reset to 0 after a write.
+ */
+static inline size_t w1_f23_fix_count(loff_t off, size_t count, size_t size)
+{
+ if (off > size)
+ return 0;
+
+ if ((off + count) > size)
+ return (size - off);
+
+ return count;
+}
+
+#ifdef CONFIG_W1_F23_CRC
+static int w1_f23_refresh_block(struct w1_slave *sl, struct w1_f23_data *data,
+ int block)
+{
+ u8 wrbuf[3];
+ int off = block * W1_PAGE_SIZE;
+
+ if (data->validcrc & (1 << block))
+ return 0;
+
+ if (w1_reset_select_slave(sl)) {
+ data->validcrc = 0;
+ return -EIO;
+ }
+
+ wrbuf[0] = W1_F23_READ_EEPROM;
+ wrbuf[1] = off & 0xff;
+ wrbuf[2] = off >> 8;
+ w1_write_block(sl->master, wrbuf, 3);
+ w1_read_block(sl->master, &data->memory[off], W1_PAGE_SIZE);
+
+ /* cache the block if the CRC is valid */
+ if (crc16(CRC16_INIT, &data->memory[off], W1_PAGE_SIZE) == CRC16_VALID)
+ data->validcrc |= (1 << block);
+
+ return 0;
+}
+#endif /* CONFIG_W1_F23_CRC */
+
+static ssize_t w1_f23_read_bin(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ struct w1_slave *sl = kobj_to_w1_slave(kobj);
+#ifdef CONFIG_W1_F23_CRC
+ struct w1_f23_data *data = sl->family_data;
+ int i, min_page, max_page;
+#else
+ u8 wrbuf[3];
+#endif
+
+ if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
+ return 0;
+
+ atomic_inc(&sl->refcnt);
+ if (down_interruptible(&sl->master->mutex)) {
+ count = 0;
+ goto out_dec;
+ }
+
+#ifdef CONFIG_W1_F23_CRC
+
+ min_page = (off >> W1_PAGE_BITS);
+ max_page = (off + count - 1) >> W1_PAGE_BITS;
+ for (i = min_page; i <= max_page; i++) {
+ if (w1_f23_refresh_block(sl, data, i)) {
+ count = -EIO;
+ goto out_up;
+ }
+ }
+ memcpy(buf, &data->memory[off], count);
+
+#else /* CONFIG_W1_F23_CRC */
+
+ /* read directly from the EEPROM */
+ if (w1_reset_select_slave(sl)) {
+ count = -EIO;
+ goto out_up;
+ }
+
+ wrbuf[0] = W1_F23_READ_EEPROM;
+ wrbuf[1] = off & 0xff;
+ wrbuf[2] = off >> 8;
+ w1_write_block(sl->master, wrbuf, 3);
+ w1_read_block(sl->master, buf, count);
+
+#endif /* CONFIG_W1_F23_CRC */
+
+out_up:
+ up(&sl->master->mutex);
+out_dec:
+ atomic_dec(&sl->refcnt);
+
+ return count;
+}
+
+/**
+ * Writes to the scratchpad and reads it back for verification.
+ * Then copies the scratchpad to EEPROM.
+ * The data must be on one page.
+ * The master must be locked.
+ *
+ * @param sl The slave structure
+ * @param addr Address for the write
+ * @param len length must be <= (W1_PAGE_SIZE - (addr & W1_PAGE_MASK))
+ * @param data The data to write
+ * @return 0=Success -1=failure
+ */
+static int w1_f23_write(struct w1_slave *sl, int addr, int len, const u8 *data)
+{
+ u8 wrbuf[4];
+ u8 rdbuf[W1_PAGE_SIZE + 3];
+ u8 es = (addr + len - 1) & 0x1f;
+
+ /* Write the data to the scratchpad */
+ if (w1_reset_select_slave(sl))
+ return -1;
+
+ wrbuf[0] = W1_F23_WRITE_SCRATCH;
+ wrbuf[1] = addr & 0xff;
+ wrbuf[2] = addr >> 8;
+
+ w1_write_block(sl->master, wrbuf, 3);
+ w1_write_block(sl->master, data, len);
+
+ /* Read the scratchpad and verify */
+ if (w1_reset_select_slave(sl))
+ return -1;
+
+ w1_write_8(sl->master, W1_F23_READ_SCRATCH);
+ w1_read_block(sl->master, rdbuf, len + 3);
+
+ /* Compare what was read against the data written */
+ if ((rdbuf[0] != wrbuf[1]) || (rdbuf[1] != wrbuf[2]) ||
+ (rdbuf[2] != es) || (memcmp(data, &rdbuf[3], len) != 0))
+ return -1;
+
+ /* Copy the scratchpad to EEPROM */
+ if (w1_reset_select_slave(sl))
+ return -1;
+
+ wrbuf[0] = W1_F23_COPY_SCRATCH;
+ wrbuf[3] = es;
+ w1_write_block(sl->master, wrbuf, 4);
+
+ /* Sleep for 5 ms to wait for the write to complete */
+ msleep(5);
+
+ /* Reset the bus to wake up the EEPROM (this may not be needed) */
+ w1_reset_bus(sl->master);
+
+ return 0;
+}
+
+static ssize_t w1_f23_write_bin(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ struct w1_slave *sl = kobj_to_w1_slave(kobj);
+ int addr, len, idx;
+
+ if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
+ return 0;
+
+#ifdef CONFIG_W1_F23_CRC
+ /* can only write full blocks in cached mode */
+ if ((off & W1_PAGE_MASK) || (count & W1_PAGE_MASK)) {
+ dev_err(&sl->dev, "invalid offset/count off=%d cnt=%zd\n",
+ (int)off, count);
+ return -EINVAL;
+ }
+
+ /* make sure the block CRCs are valid */
+ for (idx = 0; idx < count; idx += W1_PAGE_SIZE) {
+ if (crc16(CRC16_INIT, &buf[idx], W1_PAGE_SIZE) != CRC16_VALID) {
+ dev_err(&sl->dev, "bad CRC at offset %d\n", (int)off);
+ return -EINVAL;
+ }
+ }
+#endif /* CONFIG_W1_F23_CRC */
+
+ atomic_inc(&sl->refcnt);
+ if (down_interruptible(&sl->master->mutex)) {
+ count = 0;
+ goto out_dec;
+ }
+
+ /* Can only write data to one page at a time */
+ idx = 0;
+ while (idx < count) {
+ addr = off + idx;
+ len = W1_PAGE_SIZE - (addr & W1_PAGE_MASK);
+ if (len > (count - idx))
+ len = count - idx;
+
+ if (w1_f23_write(sl, addr, len, &buf[idx]) < 0) {
+ count = -EIO;
+ goto out_up;
+ }
+ idx += len;
+ }
+
+out_up:
+ up(&sl->master->mutex);
+out_dec:
+ atomic_dec(&sl->refcnt);
+
+ return count;
+}
+
+static struct bin_attribute w1_f23_bin_attr = {
+ .attr = {
+ .name = "eeprom",
+ .mode = S_IRUGO | S_IWUSR,
+ .owner = THIS_MODULE,
+ },
+ .size = W1_EEPROM_SIZE,
+ .read = w1_f23_read_bin,
+ .write = w1_f23_write_bin,
+};
+
+static int w1_f23_add_slave(struct w1_slave *sl)
+{
+ int err;
+#ifdef CONFIG_W1_F23_CRC
+ struct w1_f23_data *data;
+
+ data = kmalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ memset(data, 0, sizeof(struct w1_f23_data));
+ sl->family_data = data;
+
+#endif /* CONFIG_W1_F23_CRC */
+
+ err = sysfs_create_bin_file(&sl->dev.kobj, &w1_f23_bin_attr);
+
+#ifdef CONFIG_W1_F23_CRC
+ if (err)
+ kfree(data);
+#endif /* CONFIG_W1_F23_CRC */
+
+ return err;
+}
+
+static void w1_f23_remove_slave(struct w1_slave *sl)
+{
+#ifdef CONFIG_W1_F23_CRC
+ kfree(sl->family_data);
+ sl->family_data = NULL;
+#endif /* CONFIG_W1_F23_CRC */
+ sysfs_remove_bin_file(&sl->dev.kobj, &w1_f23_bin_attr);
+}
+
+static struct w1_family_ops w1_f23_fops = {
+ .add_slave = w1_f23_add_slave,
+ .remove_slave = w1_f23_remove_slave,
+};
+
+static struct w1_family w1_family_23 = {
+ .fid = W1_EEPROM_DS2433,
+ .fops = &w1_f23_fops,
+};
+
+static int __init w1_f23_init(void)
+{
+ return w1_register_family(&w1_family_23);
+}
+
+static void __exit w1_f23_fini(void)
+{
+ w1_unregister_family(&w1_family_23);
+}
+
+module_init(w1_f23_init);
+module_exit(w1_f23_fini);
--- /dev/null
+/*
+ * w1_smem.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the smems 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
+ */
+
+#include <asm/types.h>
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/types.h>
+
+#include "../w1.h"
+#include "../w1_io.h"
+#include "../w1_int.h"
+#include "../w1_family.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, 64bit memory family.");
+
+static struct w1_family w1_smem_family_01 = {
+ .fid = W1_FAMILY_SMEM_01,
+};
+
+static struct w1_family w1_smem_family_81 = {
+ .fid = W1_FAMILY_SMEM_81,
+};
+
+static int __init w1_smem_init(void)
+{
+ int err;
+
+ err = w1_register_family(&w1_smem_family_01);
+ if (err)
+ return err;
+
+ err = w1_register_family(&w1_smem_family_81);
+ if (err) {
+ w1_unregister_family(&w1_smem_family_01);
+ return err;
+ }
+
+ return 0;
+}
+
+static void __exit w1_smem_fini(void)
+{
+ w1_unregister_family(&w1_smem_family_01);
+ w1_unregister_family(&w1_smem_family_81);
+}
+
+module_init(w1_smem_init);
+module_exit(w1_smem_fini);
--- /dev/null
+/*
+ * w1_therm.c
+ *
+ * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the therms 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
+ */
+
+#include <asm/types.h>
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+
+#include "../w1.h"
+#include "../w1_io.h"
+#include "../w1_int.h"
+#include "../w1_family.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, temperature family.");
+
+static u8 bad_roms[][9] = {
+ {0xaa, 0x00, 0x4b, 0x46, 0xff, 0xff, 0x0c, 0x10, 0x87},
+ {}
+ };
+
+static ssize_t w1_therm_read_bin(struct kobject *, char *, loff_t, size_t);
+
+static struct bin_attribute w1_therm_bin_attr = {
+ .attr = {
+ .name = "w1_slave",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE,
+ },
+ .size = W1_SLAVE_DATA_SIZE,
+ .read = w1_therm_read_bin,
+};
+
+static int w1_therm_add_slave(struct w1_slave *sl)
+{
+ return sysfs_create_bin_file(&sl->dev.kobj, &w1_therm_bin_attr);
+}
+
+static void w1_therm_remove_slave(struct w1_slave *sl)
+{
+ sysfs_remove_bin_file(&sl->dev.kobj, &w1_therm_bin_attr);
+}
+
+static struct w1_family_ops w1_therm_fops = {
+ .add_slave = w1_therm_add_slave,
+ .remove_slave = w1_therm_remove_slave,
+};
+
+static struct w1_family w1_therm_family_DS18S20 = {
+ .fid = W1_THERM_DS18S20,
+ .fops = &w1_therm_fops,
+};
+
+static struct w1_family w1_therm_family_DS18B20 = {
+ .fid = W1_THERM_DS18B20,
+ .fops = &w1_therm_fops,
+};
+
+static struct w1_family w1_therm_family_DS1822 = {
+ .fid = W1_THERM_DS1822,
+ .fops = &w1_therm_fops,
+};
+
+struct w1_therm_family_converter
+{
+ u8 broken;
+ u16 reserved;
+ struct w1_family *f;
+ int (*convert)(u8 rom[9]);
+};
+
+static inline int w1_DS18B20_convert_temp(u8 rom[9]);
+static inline int w1_DS18S20_convert_temp(u8 rom[9]);
+
+static struct w1_therm_family_converter w1_therm_families[] = {
+ {
+ .f = &w1_therm_family_DS18S20,
+ .convert = w1_DS18S20_convert_temp
+ },
+ {
+ .f = &w1_therm_family_DS1822,
+ .convert = w1_DS18B20_convert_temp
+ },
+ {
+ .f = &w1_therm_family_DS18B20,
+ .convert = w1_DS18B20_convert_temp
+ },
+};
+
+static inline int w1_DS18B20_convert_temp(u8 rom[9])
+{
+ int t = (rom[1] << 8) | rom[0];
+ t /= 16;
+ return t;
+}
+
+static inline int w1_DS18S20_convert_temp(u8 rom[9])
+{
+ int t, h;
+
+ if (!rom[7])
+ return 0;
+
+ if (rom[1] == 0)
+ t = ((s32)rom[0] >> 1)*1000;
+ else
+ t = 1000*(-1*(s32)(0x100-rom[0]) >> 1);
+
+ t -= 250;
+ h = 1000*((s32)rom[7] - (s32)rom[6]);
+ h /= (s32)rom[7];
+ t += h;
+
+ return t;
+}
+
+static inline int w1_convert_temp(u8 rom[9], u8 fid)
+{
+ int i;
+
+ for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i)
+ if (w1_therm_families[i].f->fid == fid)
+ return w1_therm_families[i].convert(rom);
+
+ return 0;
+}
+
+static int w1_therm_check_rom(u8 rom[9])
+{
+ int i;
+
+ for (i=0; i<sizeof(bad_roms)/9; ++i)
+ if (!memcmp(bad_roms[i], rom, 9))
+ return 1;
+
+ return 0;
+}
+
+static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+ struct w1_slave *sl = kobj_to_w1_slave(kobj);
+ struct w1_master *dev = sl->master;
+ u8 rom[9], crc, verdict;
+ int i, max_trying = 10;
+
+ atomic_inc(&sl->refcnt);
+ smp_mb__after_atomic_inc();
+ if (down_interruptible(&sl->master->mutex)) {
+ count = 0;
+ goto out_dec;
+ }
+
+ if (off > W1_SLAVE_DATA_SIZE) {
+ count = 0;
+ goto out;
+ }
+ if (off + count > W1_SLAVE_DATA_SIZE) {
+ count = 0;
+ goto out;
+ }
+
+ memset(buf, 0, count);
+ memset(rom, 0, sizeof(rom));
+
+ count = 0;
+ verdict = 0;
+ crc = 0;
+
+ while (max_trying--) {
+ if (!w1_reset_select_slave(sl)) {
+ int count = 0;
+ unsigned int tm = 750;
+
+ w1_write_8(dev, W1_CONVERT_TEMP);
+
+ while (tm) {
+ tm = msleep_interruptible(tm);
+ if (signal_pending(current))
+ flush_signals(current);
+ }
+
+ if (!w1_reset_select_slave(sl)) {
+
+ w1_write_8(dev, W1_READ_SCRATCHPAD);
+ if ((count = w1_read_block(dev, rom, 9)) != 9) {
+ dev_warn(&dev->dev, "w1_read_block() returned %d instead of 9.\n", count);
+ }
+
+ crc = w1_calc_crc8(rom, 8);
+
+ if (rom[8] == crc && rom[0])
+ verdict = 1;
+ }
+ }
+
+ if (!w1_therm_check_rom(rom))
+ break;
+ }
+
+ for (i = 0; i < 9; ++i)
+ count += sprintf(buf + count, "%02x ", rom[i]);
+ count += sprintf(buf + count, ": crc=%02x %s\n",
+ crc, (verdict) ? "YES" : "NO");
+ if (verdict)
+ memcpy(sl->rom, rom, sizeof(sl->rom));
+ else
+ dev_warn(&dev->dev, "18S20 doesn't respond to CONVERT_TEMP.\n");
+
+ for (i = 0; i < 9; ++i)
+ count += sprintf(buf + count, "%02x ", sl->rom[i]);
+
+ count += sprintf(buf + count, "t=%d\n", w1_convert_temp(rom, sl->family->fid));
+out:
+ up(&dev->mutex);
+out_dec:
+ smp_mb__before_atomic_inc();
+ atomic_dec(&sl->refcnt);
+
+ return count;
+}
+
+static int __init w1_therm_init(void)
+{
+ int err, i;
+
+ for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i) {
+ err = w1_register_family(w1_therm_families[i].f);
+ if (err)
+ w1_therm_families[i].broken = 1;
+ }
+
+ return 0;
+}
+
+static void __exit w1_therm_fini(void)
+{
+ int i;
+
+ for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i)
+ if (!w1_therm_families[i].broken)
+ w1_unregister_family(w1_therm_families[i].f);
+}
+
+module_init(w1_therm_init);
+module_exit(w1_therm_fini);
+++ /dev/null
-/*
- * w1_ds2433.c - w1 family 23 (DS2433) driver
- *
- * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/device.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#ifdef CONFIG_W1_F23_CRC
-#include <linux/crc16.h>
-
-#define CRC16_INIT 0
-#define CRC16_VALID 0xb001
-
-#endif
-
-#include "w1.h"
-#include "w1_io.h"
-#include "w1_int.h"
-#include "w1_family.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Ben Gardner <bgardner@wabtec.com>");
-MODULE_DESCRIPTION("w1 family 23 driver for DS2433, 4kb EEPROM");
-
-#define W1_EEPROM_SIZE 512
-#define W1_PAGE_COUNT 16
-#define W1_PAGE_SIZE 32
-#define W1_PAGE_BITS 5
-#define W1_PAGE_MASK 0x1F
-
-#define W1_F23_TIME 300
-
-#define W1_F23_READ_EEPROM 0xF0
-#define W1_F23_WRITE_SCRATCH 0x0F
-#define W1_F23_READ_SCRATCH 0xAA
-#define W1_F23_COPY_SCRATCH 0x55
-
-struct w1_f23_data {
- u8 memory[W1_EEPROM_SIZE];
- u32 validcrc;
-};
-
-/**
- * Check the file size bounds and adjusts count as needed.
- * This would not be needed if the file size didn't reset to 0 after a write.
- */
-static inline size_t w1_f23_fix_count(loff_t off, size_t count, size_t size)
-{
- if (off > size)
- return 0;
-
- if ((off + count) > size)
- return (size - off);
-
- return count;
-}
-
-#ifdef CONFIG_W1_F23_CRC
-static int w1_f23_refresh_block(struct w1_slave *sl, struct w1_f23_data *data,
- int block)
-{
- u8 wrbuf[3];
- int off = block * W1_PAGE_SIZE;
-
- if (data->validcrc & (1 << block))
- return 0;
-
- if (w1_reset_select_slave(sl)) {
- data->validcrc = 0;
- return -EIO;
- }
-
- wrbuf[0] = W1_F23_READ_EEPROM;
- wrbuf[1] = off & 0xff;
- wrbuf[2] = off >> 8;
- w1_write_block(sl->master, wrbuf, 3);
- w1_read_block(sl->master, &data->memory[off], W1_PAGE_SIZE);
-
- /* cache the block if the CRC is valid */
- if (crc16(CRC16_INIT, &data->memory[off], W1_PAGE_SIZE) == CRC16_VALID)
- data->validcrc |= (1 << block);
-
- return 0;
-}
-#endif /* CONFIG_W1_F23_CRC */
-
-static ssize_t w1_f23_read_bin(struct kobject *kobj, char *buf, loff_t off,
- size_t count)
-{
- struct w1_slave *sl = kobj_to_w1_slave(kobj);
-#ifdef CONFIG_W1_F23_CRC
- struct w1_f23_data *data = sl->family_data;
- int i, min_page, max_page;
-#else
- u8 wrbuf[3];
-#endif
-
- if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
- return 0;
-
- atomic_inc(&sl->refcnt);
- if (down_interruptible(&sl->master->mutex)) {
- count = 0;
- goto out_dec;
- }
-
-#ifdef CONFIG_W1_F23_CRC
-
- min_page = (off >> W1_PAGE_BITS);
- max_page = (off + count - 1) >> W1_PAGE_BITS;
- for (i = min_page; i <= max_page; i++) {
- if (w1_f23_refresh_block(sl, data, i)) {
- count = -EIO;
- goto out_up;
- }
- }
- memcpy(buf, &data->memory[off], count);
-
-#else /* CONFIG_W1_F23_CRC */
-
- /* read directly from the EEPROM */
- if (w1_reset_select_slave(sl)) {
- count = -EIO;
- goto out_up;
- }
-
- wrbuf[0] = W1_F23_READ_EEPROM;
- wrbuf[1] = off & 0xff;
- wrbuf[2] = off >> 8;
- w1_write_block(sl->master, wrbuf, 3);
- w1_read_block(sl->master, buf, count);
-
-#endif /* CONFIG_W1_F23_CRC */
-
-out_up:
- up(&sl->master->mutex);
-out_dec:
- atomic_dec(&sl->refcnt);
-
- return count;
-}
-
-/**
- * Writes to the scratchpad and reads it back for verification.
- * Then copies the scratchpad to EEPROM.
- * The data must be on one page.
- * The master must be locked.
- *
- * @param sl The slave structure
- * @param addr Address for the write
- * @param len length must be <= (W1_PAGE_SIZE - (addr & W1_PAGE_MASK))
- * @param data The data to write
- * @return 0=Success -1=failure
- */
-static int w1_f23_write(struct w1_slave *sl, int addr, int len, const u8 *data)
-{
- u8 wrbuf[4];
- u8 rdbuf[W1_PAGE_SIZE + 3];
- u8 es = (addr + len - 1) & 0x1f;
-
- /* Write the data to the scratchpad */
- if (w1_reset_select_slave(sl))
- return -1;
-
- wrbuf[0] = W1_F23_WRITE_SCRATCH;
- wrbuf[1] = addr & 0xff;
- wrbuf[2] = addr >> 8;
-
- w1_write_block(sl->master, wrbuf, 3);
- w1_write_block(sl->master, data, len);
-
- /* Read the scratchpad and verify */
- if (w1_reset_select_slave(sl))
- return -1;
-
- w1_write_8(sl->master, W1_F23_READ_SCRATCH);
- w1_read_block(sl->master, rdbuf, len + 3);
-
- /* Compare what was read against the data written */
- if ((rdbuf[0] != wrbuf[1]) || (rdbuf[1] != wrbuf[2]) ||
- (rdbuf[2] != es) || (memcmp(data, &rdbuf[3], len) != 0))
- return -1;
-
- /* Copy the scratchpad to EEPROM */
- if (w1_reset_select_slave(sl))
- return -1;
-
- wrbuf[0] = W1_F23_COPY_SCRATCH;
- wrbuf[3] = es;
- w1_write_block(sl->master, wrbuf, 4);
-
- /* Sleep for 5 ms to wait for the write to complete */
- msleep(5);
-
- /* Reset the bus to wake up the EEPROM (this may not be needed) */
- w1_reset_bus(sl->master);
-
- return 0;
-}
-
-static ssize_t w1_f23_write_bin(struct kobject *kobj, char *buf, loff_t off,
- size_t count)
-{
- struct w1_slave *sl = kobj_to_w1_slave(kobj);
- int addr, len, idx;
-
- if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
- return 0;
-
-#ifdef CONFIG_W1_F23_CRC
- /* can only write full blocks in cached mode */
- if ((off & W1_PAGE_MASK) || (count & W1_PAGE_MASK)) {
- dev_err(&sl->dev, "invalid offset/count off=%d cnt=%zd\n",
- (int)off, count);
- return -EINVAL;
- }
-
- /* make sure the block CRCs are valid */
- for (idx = 0; idx < count; idx += W1_PAGE_SIZE) {
- if (crc16(CRC16_INIT, &buf[idx], W1_PAGE_SIZE) != CRC16_VALID) {
- dev_err(&sl->dev, "bad CRC at offset %d\n", (int)off);
- return -EINVAL;
- }
- }
-#endif /* CONFIG_W1_F23_CRC */
-
- atomic_inc(&sl->refcnt);
- if (down_interruptible(&sl->master->mutex)) {
- count = 0;
- goto out_dec;
- }
-
- /* Can only write data to one page at a time */
- idx = 0;
- while (idx < count) {
- addr = off + idx;
- len = W1_PAGE_SIZE - (addr & W1_PAGE_MASK);
- if (len > (count - idx))
- len = count - idx;
-
- if (w1_f23_write(sl, addr, len, &buf[idx]) < 0) {
- count = -EIO;
- goto out_up;
- }
- idx += len;
- }
-
-out_up:
- up(&sl->master->mutex);
-out_dec:
- atomic_dec(&sl->refcnt);
-
- return count;
-}
-
-static struct bin_attribute w1_f23_bin_attr = {
- .attr = {
- .name = "eeprom",
- .mode = S_IRUGO | S_IWUSR,
- .owner = THIS_MODULE,
- },
- .size = W1_EEPROM_SIZE,
- .read = w1_f23_read_bin,
- .write = w1_f23_write_bin,
-};
-
-static int w1_f23_add_slave(struct w1_slave *sl)
-{
- int err;
-#ifdef CONFIG_W1_F23_CRC
- struct w1_f23_data *data;
-
- data = kmalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
- memset(data, 0, sizeof(struct w1_f23_data));
- sl->family_data = data;
-
-#endif /* CONFIG_W1_F23_CRC */
-
- err = sysfs_create_bin_file(&sl->dev.kobj, &w1_f23_bin_attr);
-
-#ifdef CONFIG_W1_F23_CRC
- if (err)
- kfree(data);
-#endif /* CONFIG_W1_F23_CRC */
-
- return err;
-}
-
-static void w1_f23_remove_slave(struct w1_slave *sl)
-{
-#ifdef CONFIG_W1_F23_CRC
- kfree(sl->family_data);
- sl->family_data = NULL;
-#endif /* CONFIG_W1_F23_CRC */
- sysfs_remove_bin_file(&sl->dev.kobj, &w1_f23_bin_attr);
-}
-
-static struct w1_family_ops w1_f23_fops = {
- .add_slave = w1_f23_add_slave,
- .remove_slave = w1_f23_remove_slave,
-};
-
-static struct w1_family w1_family_23 = {
- .fid = W1_EEPROM_DS2433,
- .fops = &w1_f23_fops,
-};
-
-static int __init w1_f23_init(void)
-{
- return w1_register_family(&w1_family_23);
-}
-
-static void __exit w1_f23_fini(void)
-{
- w1_unregister_family(&w1_family_23);
-}
-
-module_init(w1_f23_init);
-module_exit(w1_f23_fini);
+++ /dev/null
-/*
- * w1_smem.c
- *
- * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the smems 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
- */
-
-#include <asm/types.h>
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/device.h>
-#include <linux/types.h>
-
-#include "w1.h"
-#include "w1_io.h"
-#include "w1_int.h"
-#include "w1_family.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
-MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, 64bit memory family.");
-
-static struct w1_family w1_smem_family_01 = {
- .fid = W1_FAMILY_SMEM_01,
-};
-
-static struct w1_family w1_smem_family_81 = {
- .fid = W1_FAMILY_SMEM_81,
-};
-
-static int __init w1_smem_init(void)
-{
- int err;
-
- err = w1_register_family(&w1_smem_family_01);
- if (err)
- return err;
-
- err = w1_register_family(&w1_smem_family_81);
- if (err) {
- w1_unregister_family(&w1_smem_family_01);
- return err;
- }
-
- return 0;
-}
-
-static void __exit w1_smem_fini(void)
-{
- w1_unregister_family(&w1_smem_family_01);
- w1_unregister_family(&w1_smem_family_81);
-}
-
-module_init(w1_smem_init);
-module_exit(w1_smem_fini);
+++ /dev/null
-/*
- * w1_therm.c
- *
- * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the therms 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
- */
-
-#include <asm/types.h>
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/device.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-
-#include "w1.h"
-#include "w1_io.h"
-#include "w1_int.h"
-#include "w1_family.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
-MODULE_DESCRIPTION("Driver for 1-wire Dallas network protocol, temperature family.");
-
-static u8 bad_roms[][9] = {
- {0xaa, 0x00, 0x4b, 0x46, 0xff, 0xff, 0x0c, 0x10, 0x87},
- {}
- };
-
-static ssize_t w1_therm_read_bin(struct kobject *, char *, loff_t, size_t);
-
-static struct bin_attribute w1_therm_bin_attr = {
- .attr = {
- .name = "w1_slave",
- .mode = S_IRUGO,
- .owner = THIS_MODULE,
- },
- .size = W1_SLAVE_DATA_SIZE,
- .read = w1_therm_read_bin,
-};
-
-static int w1_therm_add_slave(struct w1_slave *sl)
-{
- return sysfs_create_bin_file(&sl->dev.kobj, &w1_therm_bin_attr);
-}
-
-static void w1_therm_remove_slave(struct w1_slave *sl)
-{
- sysfs_remove_bin_file(&sl->dev.kobj, &w1_therm_bin_attr);
-}
-
-static struct w1_family_ops w1_therm_fops = {
- .add_slave = w1_therm_add_slave,
- .remove_slave = w1_therm_remove_slave,
-};
-
-static struct w1_family w1_therm_family_DS18S20 = {
- .fid = W1_THERM_DS18S20,
- .fops = &w1_therm_fops,
-};
-
-static struct w1_family w1_therm_family_DS18B20 = {
- .fid = W1_THERM_DS18B20,
- .fops = &w1_therm_fops,
-};
-
-static struct w1_family w1_therm_family_DS1822 = {
- .fid = W1_THERM_DS1822,
- .fops = &w1_therm_fops,
-};
-
-struct w1_therm_family_converter
-{
- u8 broken;
- u16 reserved;
- struct w1_family *f;
- int (*convert)(u8 rom[9]);
-};
-
-static inline int w1_DS18B20_convert_temp(u8 rom[9]);
-static inline int w1_DS18S20_convert_temp(u8 rom[9]);
-
-static struct w1_therm_family_converter w1_therm_families[] = {
- {
- .f = &w1_therm_family_DS18S20,
- .convert = w1_DS18S20_convert_temp
- },
- {
- .f = &w1_therm_family_DS1822,
- .convert = w1_DS18B20_convert_temp
- },
- {
- .f = &w1_therm_family_DS18B20,
- .convert = w1_DS18B20_convert_temp
- },
-};
-
-static inline int w1_DS18B20_convert_temp(u8 rom[9])
-{
- int t = (rom[1] << 8) | rom[0];
- t /= 16;
- return t;
-}
-
-static inline int w1_DS18S20_convert_temp(u8 rom[9])
-{
- int t, h;
-
- if (!rom[7])
- return 0;
-
- if (rom[1] == 0)
- t = ((s32)rom[0] >> 1)*1000;
- else
- t = 1000*(-1*(s32)(0x100-rom[0]) >> 1);
-
- t -= 250;
- h = 1000*((s32)rom[7] - (s32)rom[6]);
- h /= (s32)rom[7];
- t += h;
-
- return t;
-}
-
-static inline int w1_convert_temp(u8 rom[9], u8 fid)
-{
- int i;
-
- for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i)
- if (w1_therm_families[i].f->fid == fid)
- return w1_therm_families[i].convert(rom);
-
- return 0;
-}
-
-static int w1_therm_check_rom(u8 rom[9])
-{
- int i;
-
- for (i=0; i<sizeof(bad_roms)/9; ++i)
- if (!memcmp(bad_roms[i], rom, 9))
- return 1;
-
- return 0;
-}
-
-static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
-{
- struct w1_slave *sl = kobj_to_w1_slave(kobj);
- struct w1_master *dev = sl->master;
- u8 rom[9], crc, verdict;
- int i, max_trying = 10;
-
- atomic_inc(&sl->refcnt);
- smp_mb__after_atomic_inc();
- if (down_interruptible(&sl->master->mutex)) {
- count = 0;
- goto out_dec;
- }
-
- if (off > W1_SLAVE_DATA_SIZE) {
- count = 0;
- goto out;
- }
- if (off + count > W1_SLAVE_DATA_SIZE) {
- count = 0;
- goto out;
- }
-
- memset(buf, 0, count);
- memset(rom, 0, sizeof(rom));
-
- count = 0;
- verdict = 0;
- crc = 0;
-
- while (max_trying--) {
- if (!w1_reset_select_slave(sl)) {
- int count = 0;
- unsigned int tm = 750;
-
- w1_write_8(dev, W1_CONVERT_TEMP);
-
- while (tm) {
- tm = msleep_interruptible(tm);
- if (signal_pending(current))
- flush_signals(current);
- }
-
- if (!w1_reset_select_slave(sl)) {
-
- w1_write_8(dev, W1_READ_SCRATCHPAD);
- if ((count = w1_read_block(dev, rom, 9)) != 9) {
- dev_warn(&dev->dev, "w1_read_block() returned %d instead of 9.\n", count);
- }
-
- crc = w1_calc_crc8(rom, 8);
-
- if (rom[8] == crc && rom[0])
- verdict = 1;
- }
- }
-
- if (!w1_therm_check_rom(rom))
- break;
- }
-
- for (i = 0; i < 9; ++i)
- count += sprintf(buf + count, "%02x ", rom[i]);
- count += sprintf(buf + count, ": crc=%02x %s\n",
- crc, (verdict) ? "YES" : "NO");
- if (verdict)
- memcpy(sl->rom, rom, sizeof(sl->rom));
- else
- dev_warn(&dev->dev, "18S20 doesn't respond to CONVERT_TEMP.\n");
-
- for (i = 0; i < 9; ++i)
- count += sprintf(buf + count, "%02x ", sl->rom[i]);
-
- count += sprintf(buf + count, "t=%d\n", w1_convert_temp(rom, sl->family->fid));
-out:
- up(&dev->mutex);
-out_dec:
- smp_mb__before_atomic_inc();
- atomic_dec(&sl->refcnt);
-
- return count;
-}
-
-static int __init w1_therm_init(void)
-{
- int err, i;
-
- for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i) {
- err = w1_register_family(w1_therm_families[i].f);
- if (err)
- w1_therm_families[i].broken = 1;
- }
-
- return 0;
-}
-
-static void __exit w1_therm_fini(void)
-{
- int i;
-
- for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i)
- if (!w1_therm_families[i].broken)
- w1_unregister_family(w1_therm_families[i].f);
-}
-
-module_init(w1_therm_init);
-module_exit(w1_therm_fini);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff