wifi: ath12k: Add Support to Calculate and Display TPC Values

wifi: ath12k: Add Support to Calculate and Display TPC Values

Transmit Power Control(TPC) stats should display per chain TPC value per
radio. Add debugfs support to read and display TPC stats type and TPC
stats. Take power values for each preamble type, rate and NSS combination
from a particular index from each power arrays based on number of chains,
NSS, modes, MCS and tx beamforming enabled/disabled parameters. Minimum
of the values taken from reg power table, rates and Conformance Test
Limit(CTL) array table should give the TPC which is in 0.25 dBm steps.

Sample Output:
-------------
echo 1 > /sys/kernel/debug/ath12k/pci-0000\:06\:00.0/mac0/tpc_stats_type
cat /sys/kernel/debug/ath12k/pci-0000\:06\:00.0/mac0/tpc_stats

*************** TPC config **************
* powers are in 0.25 dBm steps
reg domain-22           chan freq-5955
power limit-126         max reg-domain Power-252
No.of tx chain-4        No.of rates-1164
**************** SU WITH TXBF ****************
                                TPC values for Active chains
Rate idx Preamble Rate code     1-Chain 2-Chain 3-Chain 4-Chain
4        OFDM    0x000          39      15      1       -9
5        OFDM    0x001          39      15      1       -9
.....
12       HT20    0x200          40      16      2       -8
13       HT20    0x201          40      16      2       -8
.....
44       HT40    0x200          88      88      88      88
45       HT40    0x201          88      88      88      88
.....
76       VHT20   0x300          40      16      2       -8
77       VHT20   0x301          40      16      2       -8
.....
172      VHT40   0x300          88      88      88      88
173      VHT40   0x301          88      88      88      88
.....
412      HE20    0x400          88      88      88      88
413      HE20    0x401          88      88      88      88
.....
508      HE40    0x400          76      76      76      76
509      HE40    0x401          76      76      76      76
.....
748      EHT20   0x50e          88      88      88      88
749      EHT20   0x50f          88      88      88      88
.....
812      EHT40   0x50e          88      88      88      88
813      EHT40   0x50f          88      88      88      88
.....

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00214-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sowmiya Sree Elavalagan <quic_ssreeela@quicinc.com>
Co-developed-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Co-developed-by: Roopni Devanathan <quic_rdevanat@quicinc.com>
Signed-off-by: Roopni Devanathan <quic_rdevanat@quicinc.com>
Reviewed-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Link: https://patch.msgid.link/20250130061104.962124-3-quic_rdevanat@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>