[PW_SID:1104005] [v2] bluetooth: btintel: Add Bluetooth SAR revision 2 support

[BluezTestBot]

BRDS revision 2 introduces per-chain (Chain A and Chain B) TX power
limits across five sub-bands (2.4G, 5.2G, 5.8/5.9G, 6G-low, 6G-high),
replacing the single-chain per-modulation model of revisions 0 and 1.

• Add btintel_set_sar_rev2() which sends the full Rev2 DDC sequence:
  0x019e inc-power-mode enable flag (1 byte)
  0x0311 2.4 GHz sub-band limits (2 bytes)
  0x0312 5.2 GHz sub-band limits (2 bytes)
  0x0313 5.8/5.9 GHz sub-band limits (2 bytes)
  0x0314 5.8/5.9 GHz sub-band limits again (2 bytes, duplicate FW reg)
  0x0315 6 GHz low sub-band limits (2 bytes)
  0x0316 6 GHz high sub-band limits (2 bytes)
  followed by the SAR-init-complete command (0xfe25).

logs from dmesg when BTSAR2 is enabled in Coreboot/BIOS:

Bluetooth: hci0: BT SAR Rev2: revision=2 bt_sar_bios=1 inc_power_mode=1
Bluetooth: hci0: BT SAR Rev2 Chain A: 2g4=76 5g2=0 5g8_5g9=0 6g1=0 6g3=0
Bluetooth: hci0: BT SAR Rev2 Chain B: 2g4=102 5g2=0 5g8_5g9=0 6g1=0 6g3=0

Signed-off-by: Ravindra ravindra@intel.com
Signed-off-by: Kiran K kiran.k@intel.com

changes in v2:

• Update commit message to include logs
• Validate the ACPI types/size before accessing.

drivers/bluetooth/btintel.c | 195 +++++++++++++++++++++++++++++++++++-
drivers/bluetooth/btintel.h | 18 ++++
2 files changed, 212 insertions(+), 1 deletion(-)

[github-actions]

CheckPatch
Desc: Run checkpatch.pl script
Duration: 1.19 seconds
Result: PASS

[github-actions]

VerifyFixes
Desc: Verify Fixes tag format and validity
Duration: 0.16 seconds
Result: PASS

[github-actions]

VerifySignedoff
Desc: Verify Signed-off-by chain
Duration: 0.14 seconds
Result: PASS

[github-actions]

GitLint
Desc: Run gitlint
Duration: 0.36 seconds
Result: PASS

[github-actions]

SubjectPrefix
Desc: Check subject contains "Bluetooth" prefix
Duration: 0.13 seconds
Result: FAIL
Output:

"Bluetooth: " prefix is not specified in the subject

[github-actions]

BuildKernel
Desc: Build Kernel for Bluetooth
Duration: 28.45 seconds
Result: PASS

[github-actions]

CheckAllWarning
Desc: Run linux kernel with all warning enabled
Duration: 29.87 seconds
Result: PASS

[github-actions]

CheckSparse
Desc: Run sparse tool with linux kernel
Duration: 26.84 seconds
Result: PASS

[github-actions]

BuildKernel32
Desc: Build 32bit Kernel for Bluetooth
Duration: 24.85 seconds
Result: PASS

[github-actions]

TestRunnerSetup
Desc: Setup kernel and bluez for test-runner
Duration: 536.15 seconds
Result: PASS

[github-actions]

IncrementalBuild
Desc: Incremental build with the patches in the series
Duration: 24.15 seconds
Result: PASS