[Intel-gfx] [PATCH v2 02/10] i915:Added DC3CO mask to allowed_dc_mask and gen9_dc_mask.

[Anshuman Gupta]

This patch enables dc3co state in enable_dc module param
and adds dc3co enable mask to allowed_dc_mask and gen9_dc_mask.

Cc: jani.nik...@intel.com
Cc: imre.d...@intel.com
Cc: animesh.ma...@intel.com
Signed-off-by: Anshuman Gupta <anshuman.gu...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_power.c | 13 +++++++++++--
 drivers/gpu/drm/i915/i915_params.c                 |  3 ++-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c 
b/drivers/gpu/drm/i915/display/intel_display_power.c
index f040a74349df..0dec4d01877f 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -714,6 +714,10 @@ static u32 gen9_dc_mask(struct drm_i915_private *dev_priv)
        u32 mask;
 
        mask = DC_STATE_EN_UPTO_DC5;
+
+       if (INTEL_GEN(dev_priv) == 12)
+               mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6
+                                         | DC_STATE_EN_DC9;
        if (INTEL_GEN(dev_priv) >= 11)
                mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9;
        else if (IS_GEN9_LP(dev_priv))
@@ -3943,7 +3947,10 @@ static u32 get_allowed_dc_mask(const struct 
drm_i915_private *dev_priv,
        int requested_dc;
        int max_dc;
 
-       if (INTEL_GEN(dev_priv) >= 11) {
+       if (INTEL_GEN(dev_priv) == 12) {
+               max_dc = 3;
+               mask = DC_STATE_EN_DC9;
+       } else if (INTEL_GEN(dev_priv) >= 11) {
                max_dc = 2;
                /*
                 * DC9 has a separate HW flow from the rest of the DC states,
@@ -3969,7 +3976,7 @@ static u32 get_allowed_dc_mask(const struct 
drm_i915_private *dev_priv,
                requested_dc = enable_dc;
        } else if (enable_dc == -1) {
                requested_dc = max_dc;
-       } else if (enable_dc > max_dc && enable_dc <= 2) {
+       } else if (enable_dc > max_dc && enable_dc <= 3) {
                DRM_DEBUG_KMS("Adjusting requested max DC state (%d->%d)\n",
                              enable_dc, max_dc);
                requested_dc = max_dc;
@@ -3978,6 +3985,8 @@ static u32 get_allowed_dc_mask(const struct 
drm_i915_private *dev_priv,
                requested_dc = max_dc;
        }
 
+       if (requested_dc > 2)
+               mask |= DC_STATE_EN_DC3CO;
        if (requested_dc > 1)
                mask |= DC_STATE_EN_UPTO_DC6;
        if (requested_dc > 0)
diff --git a/drivers/gpu/drm/i915/i915_params.c 
b/drivers/gpu/drm/i915/i915_params.c
index 296452f9efe4..7a46dc957660 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -46,7 +46,8 @@ i915_param_named(modeset, int, 0400,
 
 i915_param_named_unsafe(enable_dc, int, 0400,
        "Enable power-saving display C-states. "
-       "(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
+       "(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6; "
+       "3=up to DC6 with DC3CO)");
 
 i915_param_named_unsafe(enable_fbc, int, 0600,
        "Enable frame buffer compression for power savings "
-- 
2.21.0

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