/*
- * w1_therm.c
+ * 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
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},
+ {0xaa, 0x00, 0x4b, 0x46, 0xff, 0xff, 0x0c, 0x10, 0x87},
{}
};
-static ssize_t w1_therm_read_name(struct device *, struct device_attribute *attr, char *);
-static ssize_t w1_therm_read_temp(struct device *, struct device_attribute *attr, char *);
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 = {
- .rname = &w1_therm_read_name,
- .rbin = &w1_therm_read_bin,
- .rval = &w1_therm_read_temp,
- .rvalname = "temp1_input",
+ .add_slave = w1_therm_add_slave,
+ .remove_slave = w1_therm_remove_slave,
};
static struct w1_family w1_therm_family_DS18S20 = {
.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 fid;
u8 broken;
u16 reserved;
struct w1_family *f;
static struct w1_therm_family_converter w1_therm_families[] = {
{
- .fid = W1_THERM_DS18S20,
.f = &w1_therm_family_DS18S20,
.convert = w1_DS18S20_convert_temp
},
{
- .fid = W1_THERM_DS1822,
.f = &w1_therm_family_DS1822,
.convert = w1_DS18B20_convert_temp
},
{
- .fid = W1_THERM_DS18B20,
.f = &w1_therm_family_DS18B20,
.convert = w1_DS18B20_convert_temp
},
};
-static ssize_t w1_therm_read_name(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
-
- return sprintf(buf, "%s\n", sl->name);
-}
-
static inline int w1_DS18B20_convert_temp(u8 rom[9])
{
int t = (rom[1] << 8) | rom[0];
int i;
for (i=0; i<sizeof(w1_therm_families)/sizeof(w1_therm_families[0]); ++i)
- if (w1_therm_families[i].fid == fid)
+ if (w1_therm_families[i].f->fid == fid)
return w1_therm_families[i].convert(rom);
return 0;
}
-static ssize_t w1_therm_read_temp(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
-
- return sprintf(buf, "%d\n", w1_convert_temp(sl->rom, sl->family->fid));
-}
-
static int w1_therm_check_rom(u8 rom[9])
{
int i;
static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
- struct w1_slave *sl = container_of(container_of(kobj, struct device, kobj),
- struct w1_slave, dev);
+ 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;
crc = 0;
while (max_trying--) {
- if (!w1_reset_bus (dev)) {
+ if (!w1_reset_select_slave(sl)) {
int count = 0;
- u8 match[9] = {W1_MATCH_ROM, };
unsigned int tm = 750;
- memcpy(&match[1], (u64 *) & sl->reg_num, 8);
-
- w1_write_block(dev, match, 9);
-
w1_write_8(dev, W1_CONVERT_TEMP);
while (tm) {
flush_signals(current);
}
- if (!w1_reset_bus (dev)) {
- w1_write_block(dev, match, 9);
-
+ 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);
if (rom[8] == crc && rom[0])
verdict = 1;
-
}
}