diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_opregion.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index c45fec5b5521..ce1c79eedcb1 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -291,6 +291,57 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) #undef C } +#define DISPLAY_TYPE_CRT 0 +#define DISPLAY_TYPE_TV 1 +#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 +#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 + +int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, + bool enable) +{ + struct drm_device *dev = intel_encoder->base.dev; + u32 parm = 0; + u32 type = 0; + u32 port; + + /* don't care about old stuff for now */ + if (!HAS_DDI(dev)) + return 0; + + port = intel_ddi_get_encoder_port(intel_encoder); + if (port == PORT_E) { + port = 0; + } else { + parm |= 1 << port; + port++; + } + + if (!enable) + parm |= 4 << 8; + + switch (intel_encoder->type) { + case INTEL_OUTPUT_ANALOG: + type = DISPLAY_TYPE_CRT; + break; + case INTEL_OUTPUT_UNKNOWN: + case INTEL_OUTPUT_DISPLAYPORT: + case INTEL_OUTPUT_HDMI: + type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; + break; + case INTEL_OUTPUT_EDP: + type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; + break; + default: + WARN_ONCE(1, "unsupported intel_encoder type %d\n", + intel_encoder->type); + return -EINVAL; + } + + parm |= type << (16 + port * 3); + + return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); +} + static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) { struct drm_i915_private *dev_priv = dev->dev_private; |