powercap: intel_rapl_tpmi: Fix System Domain probing
authorZhang Rui <rui.zhang@intel.com>
Wed, 31 Jan 2024 11:37:11 +0000 (19:37 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 13 Feb 2024 16:31:48 +0000 (17:31 +0100)
commit903eb9fb85e32810f376a2858aad77c9298f9488
treed127d2594c24219298cda17db962d8c43cbafbd1
parentfaa9130ce716b286d786d59032bacfd9052c2094
powercap: intel_rapl_tpmi: Fix System Domain probing

Only domain root packages can enumerate System (Psys) domain.
Whether a package is domain root or not is described in the Bit 0 of the
Domain Info register.

Add support for Domain Info register and fix the System domain probing
accordingly.

Fixes: 9eef7f9da928 ("powercap: intel_rapl: Introduce RAPL TPMI interface driver")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Cc: 6.5+ <stable@vger.kernel.org> # 6.5+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/powercap/intel_rapl_tpmi.c