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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>
This commit is contained in:
Alex Deucher 2015-10-15 15:21:09 -04:00
parent d031287a43
commit 927a81c98e
1 changed files with 38 additions and 0 deletions
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38
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
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@ -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 */