drm/i915: panel: Add get_vbt_pwm_freq() helper

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Factor the code which checks and drm_dbg_kms-s the VBT PWM frequency
out of get_backlight_max_vbt().

This is a preparation patch for honering the VBT PWM frequency for
devices which use an external PWM controller (devices using
pwm_setup_backlight()).

Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200903112337.4113-15-hdegoede@redhat.com

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Hans de Goede 2020-09-03 13:23:34 +02:00

parent c86b155da7

commit 27a79cbc17

1 changed files with 17 additions and 10 deletions

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drivers/gpu/drm/i915/display/intel_panel.c

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