diff options
| author | José Roberto de Souza <jose.souza@intel.com> | 2020-07-08 13:55:10 -0700 |
|---|---|---|
| committer | José Roberto de Souza <jose.souza@intel.com> | 2020-07-09 12:33:24 -0700 |
| commit | f615cb6a8a42c5497b88fbf152f791a1699de9aa (patch) | |
| tree | e55adab169947013fbbcfb0964260c4139626b40 /drivers/gpu/drm/i915/display/intel_bios.c | |
| parent | f0e86e0520977eda55324ae0e0505e2836fad633 (diff) | |
drm/i915/bios: Parse HOBL parameter
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 <anusha.srivatsa@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200708205512.21625-3-jose.souza@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 3 |
1 files changed, 3 insertions, 0 deletions
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 |