drm/amdgpu: add ELM/BAF support to dce_v11_0_pick_pll (v2)

New PLL scheme on ELM/BAF.

v2: squash in pll fix.  Plls are part of the phys.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 613cc98..d1a0a55 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -2385,6 +2385,44 @@ static u32 dce_v11_0_pick_pll(struct drm_crtc *crtc)
        u32 pll_in_use;
        int pll;
 
+       if ((adev->asic_type == CHIP_ELLESMERE) ||
+           (adev->asic_type == CHIP_BAFFIN)) {
+               struct amdgpu_encoder *amdgpu_encoder =
+                       to_amdgpu_encoder(amdgpu_crtc->encoder);
+               struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
+
+               if (ENCODER_MODE_IS_DP(amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder)))
+                       return ATOM_DP_DTO;
+               /* use the same PPLL for all monitors with the same clock */
+               pll = amdgpu_pll_get_shared_nondp_ppll(crtc);
+               if (pll != ATOM_PPLL_INVALID)
+                       return pll;
+
+               switch (amdgpu_encoder->encoder_id) {
+               case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
+                       if (dig->linkb)
+                               return ATOM_COMBOPHY_PLL1;
+                       else
+                               return ATOM_COMBOPHY_PLL0;
+                       break;
+               case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
+                       if (dig->linkb)
+                               return ATOM_COMBOPHY_PLL3;
+                       else
+                               return ATOM_COMBOPHY_PLL2;
+                       break;
+               case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
+                       if (dig->linkb)
+                               return ATOM_COMBOPHY_PLL5;
+                       else
+                               return ATOM_COMBOPHY_PLL4;
+                       break;
+               default:
+                       DRM_ERROR("invalid encoder_id: 0x%x\n", amdgpu_encoder->encoder_id);
+                       return ATOM_PPLL_INVALID;
+               }
+       }
+
        if (ENCODER_MODE_IS_DP(amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder))) {
                if (adev->clock.dp_extclk)
                        /* skip PPLL programming if using ext clock */