drm/i915/pmu: Use functions common with sysfs to read actual freq
authorAshutosh Dixit <ashutosh.dixit@intel.com>
Thu, 16 Mar 2023 00:48:00 +0000 (17:48 -0700)
committerJani Nikula <jani.nikula@intel.com>
Mon, 27 Mar 2023 10:21:40 +0000 (13:21 +0300)
commit12d4eb20d9d86fae5f84117ff047e966e470f7b9
tree6cb5e359e5163f0ef389c3fb75437752f14ae062
parent197b6b60ae7bc51dd0814953c562833143b292aa
drm/i915/pmu: Use functions common with sysfs to read actual freq

Expose intel_rps_read_actual_frequency_fw to read the actual freq without
taking forcewake for use by PMU. The code is refactored to use a common set
of functions across sysfs and PMU. Using common functions with sysfs in PMU
solves the issues of missing support for MTL and missing support for older
generations (prior to Gen6). It also future proofs the PMU where sometimes
code has been updated for sysfs and PMU has been missed.

v2: Remove runtime_pm_if_in_use from read_actual_frequency_fw (Tvrtko)

v3: (Tvrtko)
 - Remove goto in __read_cagf
 - Unexport intel_rps_get_cagf and intel_rps_read_punit_req

Fixes: 22009b6dad66 ("drm/i915/mtl: Modify CAGF functions for MTL")
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/8280
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316004800.2539753-1-ashutosh.dixit@intel.com
(cherry picked from commit 44df42e66139b5fac8db49ee354be279210f9816)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/gt/intel_rps.c
drivers/gpu/drm/i915/gt/intel_rps.h
drivers/gpu/drm/i915/i915_pmu.c