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sensors-detect: Add detection of NCT7802Y

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This commit is contained in:
Guenter Roeck
2014-06-26 14:37:22 +00:00
parent 778c8486c8
commit a5f0ead1ae
2 changed files with 47 additions and 0 deletions
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1
CHANGES
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@@ -13,6 +13,7 @@ SVN HEAD
Add detection of ITE IT8620E and IT8623E Add detection of ITE IT8620E and IT8623E
Add detection of TMP441, TMP442, LM95233, LM95234, Add detection of TMP441, TMP442, LM95233, LM95234,
and LM95235 and LM95235
Add detection of NCT7802Y
3.3.5 "Happy Birthday Beddy" (2014-01-22) 3.3.5 "Happy Birthday Beddy" (2014-01-22)
libsensors: Improve documentation of two functions libsensors: Improve documentation of two functions

46
prog/detect/sensors-detect
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@@ -732,6 +732,11 @@ use vars qw(@i2c_adapter_names);
driver => "w83795", driver => "w83795",
i2c_addrs => [0x2c..0x2f], i2c_addrs => [0x2c..0x2f],
i2c_detect => sub { w83795_detect(@_); }, i2c_detect => sub { w83795_detect(@_); },
}, {
name => "Nuvoton NCT7802Y",
driver => "to-be-written",
i2c_addrs => [0x28..0x2f],
i2c_detect => sub { nct7802_detect(@_); },
}, { }, {
name => "Winbond W83627HF", name => "Winbond W83627HF",
driver => "use-isa-instead", driver => "use-isa-instead",
@@ -5482,6 +5487,47 @@ sub w83795_detect
return 8; return 8;
} }
# Registers used:
# 0x00: Bank selection (Bank 0, 1)
# 0x05: Temperature readout register LSB (Bank 0)
# 0x08: PECI temperature readout register LSB (Bank 0)
# 0x0f: Voltage readout register LSB (Bank 0)
# 0xfd: Vendor ID (Bank 0)
# 0xfe: Device ID (Bank 0)
# 0xff: Device Revision (Bank 0)
#
# Note that identification registers are not accessible in bank 1,
# and there is no usable other means to identify the chip if bank 1
# is selected. Only detect chip if bank 0 is selected.
sub nct7802_detect
{
my ($bank, $reg);
my ($file, $addr) = @_;
$bank = i2c_smbus_read_byte_data($file, 0x00);
return unless $bank == 0x00;
$reg = i2c_smbus_read_byte_data($file, 0xfd);
return unless $reg == 0x50;
$reg = i2c_smbus_read_byte_data($file, 0xfe);
return unless $reg == 0xc3;
$reg = i2c_smbus_read_byte_data($file, 0xff);
return unless ($reg & 0xf0) == 0x20;
$reg = i2c_smbus_read_byte_data($file, 0x05);
return unless ($reg & 0x1f) == 0x00;
$reg = i2c_smbus_read_byte_data($file, 0x08);
return unless ($reg & 0x3f) == 0x00;
$reg = i2c_smbus_read_byte_data($file, 0x0f);
return unless ($reg & 0x3f) == 0x00;
return 8;
}
# Registers used: # Registers used:
# 0x48: Full I2C Address # 0x48: Full I2C Address
# 0x4e: Vendor ID byte selection # 0x4e: Vendor ID byte selection