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path: root/drivers/gpu/drm/radeon/atombios_crtc.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_crtc.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_crtc.c54
1 files changed, 31 insertions, 23 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 2e566e123e9e..3bce0299f64a 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1696,35 +1696,43 @@ static int radeon_atom_pick_pll(struct drm_crtc *crtc)
return ATOM_PPLL2;
DRM_ERROR("unable to allocate a PPLL\n");
return ATOM_PPLL_INVALID;
- } else {
- if (ASIC_IS_AVIVO(rdev)) {
- /* in DP mode, the DP ref clock can come from either PPLL
- * depending on the asic:
- * DCE3: PPLL1 or PPLL2
- */
- if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
- /* use the same PPLL for all DP monitors */
- pll = radeon_get_shared_dp_ppll(crtc);
- if (pll != ATOM_PPLL_INVALID)
- return pll;
- } else {
- /* use the same PPLL for all monitors with the same clock */
- pll = radeon_get_shared_nondp_ppll(crtc);
- if (pll != ATOM_PPLL_INVALID)
- return pll;
- }
- /* all other cases */
- pll_in_use = radeon_get_pll_use_mask(crtc);
+ } else if (ASIC_IS_AVIVO(rdev)) {
+ /* in DP mode, the DP ref clock can come from either PPLL
+ * depending on the asic:
+ * DCE3: PPLL1 or PPLL2
+ */
+ if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
+ /* use the same PPLL for all DP monitors */
+ pll = radeon_get_shared_dp_ppll(crtc);
+ if (pll != ATOM_PPLL_INVALID)
+ return pll;
+ } else {
+ /* use the same PPLL for all monitors with the same clock */
+ pll = radeon_get_shared_nondp_ppll(crtc);
+ if (pll != ATOM_PPLL_INVALID)
+ return pll;
+ }
+ /* all other cases */
+ pll_in_use = radeon_get_pll_use_mask(crtc);
+ /* the order shouldn't matter here, but we probably
+ * need this until we have atomic modeset
+ */
+ if (rdev->flags & RADEON_IS_IGP) {
if (!(pll_in_use & (1 << ATOM_PPLL1)))
return ATOM_PPLL1;
if (!(pll_in_use & (1 << ATOM_PPLL2)))
return ATOM_PPLL2;
- DRM_ERROR("unable to allocate a PPLL\n");
- return ATOM_PPLL_INVALID;
} else {
- /* on pre-R5xx asics, the crtc to pll mapping is hardcoded */
- return radeon_crtc->crtc_id;
+ if (!(pll_in_use & (1 << ATOM_PPLL2)))
+ return ATOM_PPLL2;
+ if (!(pll_in_use & (1 << ATOM_PPLL1)))
+ return ATOM_PPLL1;
}
+ DRM_ERROR("unable to allocate a PPLL\n");
+ return ATOM_PPLL_INVALID;
+ } else {
+ /* on pre-R5xx asics, the crtc to pll mapping is hardcoded */
+ return radeon_crtc->crtc_id;
}
}