| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354 |
- What: /sys/bus/platform/devices/INTC1092:00/intc_reg
- Date: August 2021
- KernelVersion: 5.15
- Contact: Shravan S <[email protected]>,
- An Sudhakar <[email protected]>
- Description:
- Specific Absorption Rate (SAR) regulatory mode is typically
- derived based on information like mcc (Mobile Country Code) and
- mnc (Mobile Network Code) that is available for the currently
- attached LTE network. A userspace application is required to set
- the current SAR regulatory mode on the Dynamic SAR driver using
- this sysfs node. Such an application can also read back using
- this sysfs node, the currently configured regulatory mode value
- from the Dynamic SAR driver.
- Acceptable regulatory modes are:
- == ====
- 0 FCC
- 1 CE
- 2 ISED
- == ====
- - The regulatory mode value has one of the above values.
- - The default regulatory mode used in the driver is 0.
- What: /sys/bus/platform/devices/INTC1092:00/intc_data
- Date: August 2021
- KernelVersion: 5.15
- Contact: Shravan S <[email protected]>,
- An Sudhakar <[email protected]>
- Description:
- This sysfs entry is used to retrieve Dynamic SAR information
- emitted/maintained by a BIOS that supports Dynamic SAR.
- The retrieved information is in the order given below:
- - device_mode
- - bandtable_index
- - antennatable_index
- - sartable_index
- The above information is sent as integer values separated
- by a single space. This information can then be pushed to a
- WWAN modem that uses this to control the transmit signal
- level using the Band/Antenna/SAR table index information.
- These parameters are derived/decided by aggregating
- device-mode like laptop/tablet/clamshell etc. and the
- proximity-sensor data available to the embedded controller on
- given host. The regulatory mode configured on Dynamic SAR
- driver also influences these values.
- The userspace applications can poll for changes to this file
- using POLLPRI event on file-descriptor (fd) obtained by opening
- this sysfs entry. Application can then read this information from
- the sysfs node and consume the given information.
|
