From f615cb6a8a42c5497b88fbf152f791a1699de9aa Mon Sep 17 00:00:00 2001 From: José Roberto de Souza Date: Wed, 8 Jul 2020 13:55:10 -0700 Subject: drm/i915/bios: Parse HOBL parameter MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit HOBL means hours of battery life, it is a power-saving feature were supported motherboards can use a special voltage swing table that uses less power. So here parsing the VBT to check if this feature is supported. BSpec: 20150 Reviewed-by: Anusha Srivatsa Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20200708205512.21625-3-jose.souza@intel.com --- drivers/gpu/drm/i915/display/intel_bios.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu/drm/i915/display/intel_bios.c') diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 6593e2c38043..c53c85d38fa5 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -722,6 +722,9 @@ parse_power_conservation_features(struct drm_i915_private *dev_priv, */ if (!(power->drrs & BIT(panel_type))) dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; + + if (bdb->version >= 232) + dev_priv->vbt.edp.hobl = power->hobl & BIT(panel_type); } static void -- cgit