Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 116 insertions, 0 deletions

diff --git a/Documentation/hwmon/smsc47m192.rst b/Documentation/hwmon/smsc47m192.rst
new file mode 100644
index 000000000..a2e86ab67
--- /dev/null
+++ b/Documentation/hwmon/smsc47m192.rst
@@ -0,0 +1,116 @@
+Kernel driver smsc47m192
+========================
+
+Supported chips:
+
+  * SMSC LPC47M192, LPC47M15x, LPC47M292 and LPC47M997
+
+    Prefix: 'smsc47m192'
+
+    Addresses scanned: I2C 0x2c - 0x2d
+
+    Datasheet: The datasheet for LPC47M192 is publicly available from
+
+	       http://www.smsc.com/
+
+	       The LPC47M15x, LPC47M292 and LPC47M997 are compatible for
+
+	       hardware monitoring.
+
+
+
+Author:
+      - Hartmut Rick <linux@rick.claranet.de>
+
+      - Special thanks to Jean Delvare for careful checking
+	of the code and many helpful comments and suggestions.
+
+
+Description
+-----------
+
+This driver implements support for the hardware sensor capabilities
+of the SMSC LPC47M192 and compatible Super-I/O chips.
+
+These chips support 3 temperature channels and 8 voltage inputs
+as well as CPU voltage VID input.
+
+They do also have fan monitoring and control capabilities, but the
+these features are accessed via ISA bus and are not supported by this
+driver. Use the 'smsc47m1' driver for fan monitoring and control.
+
+Voltages and temperatures are measured by an 8-bit ADC, the resolution
+of the temperatures is 1 bit per degree C.
+Voltages are scaled such that the nominal voltage corresponds to
+192 counts, i.e. 3/4 of the full range. Thus the available range for
+each voltage channel is 0V ... 255/192*(nominal voltage), the resolution
+is 1 bit per (nominal voltage)/192.
+Both voltage and temperature values are scaled by 1000, the sys files
+show voltages in mV and temperatures in units of 0.001 degC.
+
+The +12V analog voltage input channel (in4_input) is multiplexed with
+bit 4 of the encoded CPU voltage. This means that you either get
+a +12V voltage measurement or a 5 bit CPU VID, but not both.
+The default setting is to use the pin as 12V input, and use only 4 bit VID.
+This driver assumes that the information in the configuration register
+is correct, i.e. that the BIOS has updated the configuration if
+the motherboard has this input wired to VID4.
+
+The temperature and voltage readings are updated once every 1.5 seconds.
+Reading them more often repeats the same values.
+
+
+sysfs interface
+---------------
+
+===================== ==========================================================
+in0_input	      +2.5V voltage input
+in1_input	      CPU voltage input (nominal 2.25V)
+in2_input	      +3.3V voltage input
+in3_input	      +5V voltage input
+in4_input	      +12V voltage input (may be missing if used as VID4)
+in5_input	      Vcc voltage input (nominal 3.3V)
+		      This is the supply voltage of the sensor chip itself.
+in6_input	      +1.5V voltage input
+in7_input	      +1.8V voltage input
+
+in[0-7]_min,
+in[0-7]_max	      lower and upper alarm thresholds for in[0-7]_input reading
+
+		      All voltages are read and written in mV.
+
+in[0-7]_alarm	      alarm flags for voltage inputs
+		      These files read '1' in case of alarm, '0' otherwise.
+
+temp1_input	      chip temperature measured by on-chip diode
+temp[2-3]_input	      temperature measured by external diodes (one of these
+		      would typically be wired to the diode inside the CPU)
+
+temp[1-3]_min,
+temp[1-3]_max	      lower and upper alarm thresholds for temperatures
+
+temp[1-3]_offset      temperature offset registers
+		      The chip adds the offsets stored in these registers to
+		      the corresponding temperature readings.
+		      Note that temp1 and temp2 offsets share the same register,
+		      they cannot both be different from zero at the same time.
+		      Writing a non-zero number to one of them will reset the other
+		      offset to zero.
+
+		      All temperatures and offsets are read and written in
+		      units of 0.001 degC.
+
+temp[1-3]_alarm       alarm flags for temperature inputs, '1' in case of alarm,
+		      '0' otherwise.
+temp[2-3]_input_fault diode fault flags for temperature inputs 2 and 3.
+		      A fault is detected if the two pins for the corresponding
+		      sensor are open or shorted, or any of the two is shorted
+		      to ground or Vcc. '1' indicates a diode fault.
+
+cpu0_vid	      CPU voltage as received from the CPU
+
+vrm		      CPU VID standard used for decoding CPU voltage
+===================== ==========================================================
+
+The `*_min`, `*_max`, `*_offset` and `vrm` files can be read and written,
+all others are read-only.