aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/radeon/atombios_crtc.c
diff options
context:
space:
mode:
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)
1696 return ATOM_PPLL2; 1696 return ATOM_PPLL2;
1697 DRM_ERROR("unable to allocate a PPLL\n"); 1697 DRM_ERROR("unable to allocate a PPLL\n");
1698 return ATOM_PPLL_INVALID; 1698 return ATOM_PPLL_INVALID;
1699 } else { 1699 } else if (ASIC_IS_AVIVO(rdev)) {
1700 if (ASIC_IS_AVIVO(rdev)) { 1700 /* in DP mode, the DP ref clock can come from either PPLL
1701 /* in DP mode, the DP ref clock can come from either PPLL 1701 * depending on the asic:
1702 * depending on the asic: 1702 * DCE3: PPLL1 or PPLL2
1703 * DCE3: PPLL1 or PPLL2 1703 */
1704 */ 1704 if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) {
1705 if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(radeon_crtc->encoder))) { 1705 /* use the same PPLL for all DP monitors */
1706 /* use the same PPLL for all DP monitors */ 1706 pll = radeon_get_shared_dp_ppll(crtc);
1707 pll = radeon_get_shared_dp_ppll(crtc); 1707 if (pll != ATOM_PPLL_INVALID)
1708 if (pll != ATOM_PPLL_INVALID) 1708 return pll;
1709 return pll; 1709 } else {
1710 } else { 1710 /* use the same PPLL for all monitors with the same clock */
1711 /* use the same PPLL for all monitors with the same clock */ 1711 pll = radeon_get_shared_nondp_ppll(crtc);
1712 pll = radeon_get_shared_nondp_ppll(crtc); 1712 if (pll != ATOM_PPLL_INVALID)
1713 if (pll != ATOM_PPLL_INVALID) 1713 return pll;
1714 return pll; 1714 }
1715 } 1715 /* all other cases */
1716 /* all other cases */ 1716 pll_in_use = radeon_get_pll_use_mask(crtc);
1717 pll_in_use = radeon_get_pll_use_mask(crtc); 1717 /* the order shouldn't matter here, but we probably
1718 * need this until we have atomic modeset
1719 */
1720 if (rdev->flags & RADEON_IS_IGP) {
1718 if (!(pll_in_use & (1 << ATOM_PPLL1))) 1721 if (!(pll_in_use & (1 << ATOM_PPLL1)))
1719 return ATOM_PPLL1; 1722 return ATOM_PPLL1;
1720 if (!(pll_in_use & (1 << ATOM_PPLL2))) 1723 if (!(pll_in_use & (1 << ATOM_PPLL2)))
1721 return ATOM_PPLL2; 1724 return ATOM_PPLL2;
1722 DRM_ERROR("unable to allocate a PPLL\n");
1723 return ATOM_PPLL_INVALID;
1724 } else { 1725 } else {
1725 /* on pre-R5xx asics, the crtc to pll mapping is hardcoded */ 1726 if (!(pll_in_use & (1 << ATOM_PPLL2)))
1726 return radeon_crtc->crtc_id; 1727 return ATOM_PPLL2;
1728 if (!(pll_in_use & (1 << ATOM_PPLL1)))
1729 return ATOM_PPLL1;
1727 } 1730 }
1731 DRM_ERROR("unable to allocate a PPLL\n");
1732 return ATOM_PPLL_INVALID;
1733 } else {
1734 /* on pre-R5xx asics, the crtc to pll mapping is hardcoded */
1735 return radeon_crtc->crtc_id;
1728 } 1736 }
1729} 1737}
1730 1738