drm/i915: add port power domains

Parts that poke port specific HW blocks like the encoder HW state
readout or connector hotplug detect code need a way to check whether
required power domains are on or enable/disable these. For this purpose
add a set of power domains that refer to the port HW blocks. Get the
proper port power domains during modeset.

For now when requesting the power domain for a DDI port get it for a 4
lane configuration. This can be optimized later to request only the 2
lane power domain, when proper support is added on the VLV PHY side for
this. Atm, the PHY setup code assumes a 4 lane config in all cases.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9e26103af07a..9387c56647ba 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -114,6 +114,17 @@ enum intel_display_power_domain {
         POWER_DOMAIN_TRANSCODER_B,
         POWER_DOMAIN_TRANSCODER_C,
         POWER_DOMAIN_TRANSCODER_EDP,
+        POWER_DOMAIN_PORT_DDI_A_2_LANES,
+        POWER_DOMAIN_PORT_DDI_A_4_LANES,
+        POWER_DOMAIN_PORT_DDI_B_2_LANES,
+        POWER_DOMAIN_PORT_DDI_B_4_LANES,
+        POWER_DOMAIN_PORT_DDI_C_2_LANES,
+        POWER_DOMAIN_PORT_DDI_C_4_LANES,
+        POWER_DOMAIN_PORT_DDI_D_2_LANES,
+        POWER_DOMAIN_PORT_DDI_D_4_LANES,
+        POWER_DOMAIN_PORT_DSI,
+        POWER_DOMAIN_PORT_CRT,
+        POWER_DOMAIN_PORT_OTHER,
         POWER_DOMAIN_VGA,
         POWER_DOMAIN_AUDIO,
         POWER_DOMAIN_INIT,