From: José Roberto de Souza Date: Thu, 8 Apr 2021 20:31:49 +0000 (-0700) Subject: drm/i915: Do not set any power wells when there is no display X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=61a60d7962a6e8ed94ece62764f94368cd6082b2;p=linux.git drm/i915: Do not set any power wells when there is no display Power wells are only part of display block and not necessary when running a headless driver. Reviewed-by: Radhakrishna Sripada Cc: Lucas De Marchi Signed-off-by: José Roberto de Souza Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20210408203150.237947-2-jose.souza@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c index 9419ae8c6111b..53311b9764dc5 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power.c +++ b/drivers/gpu/drm/i915/display/intel_display_power.c @@ -4674,7 +4674,10 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv) * The enabling order will be from lower to higher indexed wells, * the disabling order is reversed. */ - if (IS_ALDERLAKE_S(dev_priv) || IS_DG1(dev_priv)) { + if (!HAS_DISPLAY(dev_priv)) { + power_domains->power_well_count = 0; + err = 0; + } else if (IS_ALDERLAKE_S(dev_priv) || IS_DG1(dev_priv)) { err = set_power_wells_mask(power_domains, tgl_power_wells, BIT_ULL(TGL_DISP_PW_TC_COLD_OFF)); } else if (IS_ROCKETLAKE(dev_priv)) {