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* [PATCH 0/2] drm/i915/backlight: Sanitize BIOS-enabled PCH PWM in full-AUX VESA path
@ 2026-05-14  5:58 Suraj Kandpal
  2026-05-14  5:58 ` [PATCH 1/2] drm/i915/backlight: Rename debug message in the setup() callback Suraj Kandpal
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: Suraj Kandpal @ 2026-05-14  5:58 UTC (permalink / raw)
  To: intel-xe, intel-gfx
  Cc: ankit.k.nautiyal, arun.r.murthy, jani.nikula, Suraj Kandpal

In full-AUX VESA mode (aux_enable && aux_set) the driver never touches the
native PCH PWM. If BIOS left the PWM CTL register enabled, the PCH PWM keeps
the system alive during s2idle and blocks S0ix. This series sanitizes that
stale BIOS state on first enable so S0ix is no longer blocked, while keeping
runtime behaviour otherwise unchanged.
Patch 1 is a minor debug-message rename cleanup.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>

Suraj Kandpal (2):
  drm/i915/backlight: Rename debug message in the setup() callback
  drm/i915/backlight: Sanitize BIOS-enabled PCH PWM in full-AUX VESA
    path

 .../gpu/drm/i915/display/intel_backlight.c    | 14 ++++----
 .../drm/i915/display/intel_dp_aux_backlight.c | 32 +++++++++++++------
 2 files changed, 30 insertions(+), 16 deletions(-)

-- 
2.34.1


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2026-05-14 10:13 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-05-14  5:58 [PATCH 0/2] drm/i915/backlight: Sanitize BIOS-enabled PCH PWM in full-AUX VESA path Suraj Kandpal
2026-05-14  5:58 ` [PATCH 1/2] drm/i915/backlight: Rename debug message in the setup() callback Suraj Kandpal
2026-05-14  5:58 ` [PATCH 2/2] drm/i915/backlight: Sanitize BIOS-enabled PCH PWM in full-AUX VESA path Suraj Kandpal
2026-05-14  6:05 ` ✓ CI.KUnit: success for drm/i915/backlight: Sanitize BIOS-enabled PCH PWM in full-AUX VESA path (rev2) Patchwork
2026-05-14  7:06 ` ✓ Xe.CI.BAT: " Patchwork
2026-05-14 10:12 ` [PATCH 0/2] drm/i915/backlight: Sanitize BIOS-enabled PCH PWM in full-AUX VESA path Brandt, Todd E

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