1 What: /sys/bus/platform/devices/INTC1092:00/intc_reg
4 Contact: Shravan S <s.shravan@intel.com>,
5 An Sudhakar <sudhakar.an@intel.com>
7 Specific Absorption Rate (SAR) regulatory mode is typically
8 derived based on information like mcc (Mobile Country Code) and
9 mnc (Mobile Network Code) that is available for the currently
10 attached LTE network. A userspace application is required to set
11 the current SAR regulatory mode on the Dynamic SAR driver using
12 this sysfs node. Such an application can also read back using
13 this sysfs node, the currently configured regulatory mode value
14 from the Dynamic SAR driver.
16 Acceptable regulatory modes are:
23 - The regulatory mode value has one of the above values.
24 - The default regulatory mode used in the driver is 0.
26 What: /sys/bus/platform/devices/INTC1092:00/intc_data
29 Contact: Shravan S <s.shravan@intel.com>,
30 An Sudhakar <sudhakar.an@intel.com>
32 This sysfs entry is used to retrieve Dynamic SAR information
33 emitted/maintained by a BIOS that supports Dynamic SAR.
35 The retrieved information is in the order given below:
41 The above information is sent as integer values separated
42 by a single space. This information can then be pushed to a
43 WWAN modem that uses this to control the transmit signal
44 level using the Band/Antenna/SAR table index information.
45 These parameters are derived/decided by aggregating
46 device-mode like laptop/tablet/clamshell etc. and the
47 proximity-sensor data available to the embedded controller on
48 given host. The regulatory mode configured on Dynamic SAR
49 driver also influences these values.
51 The userspace applications can poll for changes to this file
52 using POLLPRI event on file-descriptor (fd) obtained by opening
53 this sysfs entry. Application can then read this information from
54 the sysfs node and consume the given information.