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Detect LM92, LM76, MAX6633, MAX6634, MAX6635.

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2439 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare
2004-04-14 17:21:26 +00:00
parent 4a6fb11424
commit 8756685f86
1 changed files with 69 additions and 2 deletions
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71
prog/detect/sensors-detect
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@@ -779,7 +779,7 @@ use subs qw(mtp008_detect lm78_detect lm78_isa_detect lm78_alias_detect
saa1064_detect w83l784r_detect mozart_detect max6650_detect
fscher_detect adm1029_detect adm1031_detect max6900_detect
m5879_detect pca9540_detect smartbatt_mgr_detect
smartbatt_chgr_detect adt7467_detect);
smartbatt_chgr_detect adt7467_detect lm92_detect);
# This is a list of all recognized chips.
# Each entry must have the following fields:
@@ -1147,6 +1147,24 @@ use subs qw(mtp008_detect lm78_detect lm78_isa_detect lm78_alias_detect
i2c_addrs => [0x4c],
i2c_detect => sub { lm90_detect 4, @_ },
},
{
name => "National Semiconductor LM92",
driver => "lm92",
i2c_addrs => [0x48..0x4b],
i2c_detect => sub { lm92_detect 0, @_ },
},
{
name => "National Semiconductor LM76",
driver => "lm92",
i2c_addrs => [0x48..0x4b],
i2c_detect => sub { lm92_detect 1, @_ },
},
{
name => "Maxim MAX6633/MAX6634/MAX6635",
driver => "lm92",
i2c_addrs => [0x40..0x4f],
i2c_detect => sub { lm92_detect 2, @_ },
},
{
name => "Analog Devices ADT7461",
driver => "to-be-written",
@@ -2653,7 +2671,7 @@ sub lm78_alias_detect
# make sense);
# 3 means that the configuration register passes the test;
# Registers used:
# 0x01: Temperature
# 0x00: Temperature
# 0x01: Configuration
# 0x02: Hysteresis
# 0x03: Overtemperature Shutdown
@@ -2697,6 +2715,55 @@ sub lm75_detect
and ($hyst&0x00ff) <= 125 and ($os&0x00ff) <= 125 and $hyst<$os;
return 3;
}
# $_[0]: Chip to detect (0 = LM92, 1 = LM76, 2 = MAX6633/MAX6634/MAX6635)
# $_[1]: A reference to the file descriptor to access this chip.
# We may assume an i2c_set_slave_addr was already done.
# $_[2]: Address
# Returns: undef if not detected, 2 or 4 if detected;
# Registers used:
# 0x01: Configuration (National Semiconductor only)
# 0x02: Hysteresis
# 0x03: Critical Temp
# 0x04: Low Limit
# 0x05: High Limit
# 0x07: Manufacturer ID (LM92 only)
# One detection step is based on the fact that the LM92 and clones have a
# limited number of registers, which cycle modulo 16 address values.
# Note that register 0x00 may change, so we can't use the modulo trick on it.
sub lm92_detect
{
my ($chip, $file, $addr) = @_;
my $cur = i2c_smbus_read_word_data($file, 0x00);
my $conf = i2c_smbus_read_byte_data($file, 0x01);
my $hyst = i2c_smbus_read_word_data($file, 0x02);
my $crit = i2c_smbus_read_word_data($file, 0x03);
my $low = i2c_smbus_read_word_data($file, 0x04);
my $high = i2c_smbus_read_word_data($file, 0x05);
return if $chip == 0
and i2c_smbus_read_word_data($file, 0x07) != 0x0180;
return if ($chip == 0 || $chip == 1)
and ($conf & 0xE0);
for (my $i = 0; $i < 8; $i++) {
return if i2c_smbus_read_byte_data($file, $i*16+0x01) != $conf;
return if i2c_smbus_read_word_data($file, $i*16+0x02) != $hyst;
return if i2c_smbus_read_word_data($file, $i*16+0x03) != $crit;
return if i2c_smbus_read_word_data($file, $i*16+0x04) != $low;
return if i2c_smbus_read_word_data($file, $i*16+0x05) != $high;
}
foreach my $temp ($hyst, $crit, $low, $high) {
return if $chip == 2 and ($temp & 0x7F00);
return if $chip != 2 and ($temp & 0x0700);
}
return 4 if $chip == 0;
return 2;
}
# $_[0]: A reference to the file descriptor to access this chip.
# We may assume an i2c_set_slave_addr was already done.