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drm/radeon/kms: Adjust pll picker for DCE6.1

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On TN, UNIPHYA always uses PPLL2, UNIPHYB/C/D/E/F
can use either PPLL1 or PPLL0.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2012-03-20 17:18:32 -04:00 committed by Dave Airlie
parent 729b95ef03
commit 24e1f7947b
1 changed files with 30 additions and 1 deletions
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31
drivers/gpu/drm/radeon/atombios_crtc.c
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@ -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,