From: Luca Coelho Date: Thu, 4 Apr 2024 09:16:46 +0000 (+0300) Subject: drm/i915: limit eDP MSO pipe only for display version 20 and below X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a3f610dd3202be41a22e798e75a832a30a4ad598;p=linux.git drm/i915: limit eDP MSO pipe only for display version 20 and below The pipes that can be used for eDP MSO are limited to pipe A (and sometimes also pipe B) only for display version 20 and below. Modify the function that returns the pipe mask for eDP MSO so that these limitations only apply to version 20 and below, enabling all pipes otherwise. Bspec: 68923 Cc: Jani Nikula Cc: James Ausmus Cc: Ville Syrjälä Signed-off-by: Luca Coelho Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20240404091646.165309-1-luciano.coelho@intel.com Signed-off-by: Jani Nikula --- diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 2e2be08dd26ca..02a31420947d9 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2336,10 +2336,15 @@ static void intel_ddi_power_up_lanes(struct intel_encoder *encoder, } } -/* Splitter enable for eDP MSO is limited to certain pipes. */ +/* + * Splitter enable for eDP MSO is limited to certain pipes, on certain + * platforms. + */ static u8 intel_ddi_splitter_pipe_mask(struct drm_i915_private *i915) { - if (IS_ALDERLAKE_P(i915)) + if (DISPLAY_VER(i915) > 20) + return ~0; + else if (IS_ALDERLAKE_P(i915)) return BIT(PIPE_A) | BIT(PIPE_B); else return BIT(PIPE_A);