From: Alex Deucher <alexander.deucher@xxxxxxx>
On TN, UNIPHYA always uses PPLL2, UNIPHYB/C/D/E/F
can use either PPLL1 or PPLL0.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/radeon/atombios_crtc.c | 31 ++++++++++++++++++++++++++++++-
1 files changed, 30 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 224775b..92263af 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1487,7 +1487,36 @@ static int radeon_atom_pick_pll(struct drm_crtc *crtc)
struct drm_crtc *test_crtc;
uint32_t pll_in_use = 0;
- if (ASIC_IS_DCE4(rdev)) {
+ if (ASIC_IS_DCE61(rdev)) {
+ list_for_each_entry(test_encoder, &dev->mode_config.encoder_list, head) {
+ if (test_encoder->crtc && (test_encoder->crtc == crtc)) {
+ struct radeon_encoder *test_radeon_encoder =
+ to_radeon_encoder(test_encoder);
+ struct radeon_encoder_atom_dig *dig =
+ test_radeon_encoder->enc_priv;
+
+ if ((test_radeon_encoder->encoder_id ==
+ ENCODER_OBJECT_ID_INTERNAL_UNIPHY) &&
+ (dig->linkb == false)) /* UNIPHY A uses PPLL2 */
+ return ATOM_PPLL2;
+ }
+ }
+ /* UNIPHY B/C/D/E/F */
+ list_for_each_entry(test_crtc, &dev->mode_config.crtc_list, head) {
+ struct radeon_crtc *radeon_test_crtc;
+
+ if (crtc == test_crtc)
+ continue;
+
+ radeon_test_crtc = to_radeon_crtc(test_crtc);
+ if ((radeon_test_crtc->pll_id == ATOM_PPLL0) ||
+ (radeon_test_crtc->pll_id == ATOM_PPLL1))
+ pll_in_use |= (1 << radeon_test_crtc->pll_id);
+ }
+ if (!(pll_in_use & 4))
+ return ATOM_PPLL0;
+ return ATOM_PPLL1;
+ } else if (ASIC_IS_DCE4(rdev)) {
list_for_each_entry(test_encoder, &dev->mode_config.encoder_list, head) {
if (test_encoder->crtc && (test_encoder->crtc == crtc)) {
/* in DP mode, the DP ref clock can come from PPLL, DCPLL, or ext clock,
--
1.7.7.5
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