drm/i915: Don't use link_bw for PLL setup
Use port_clock instead of link_bw when picking the PLL parameters for
DP. link_bw may be zero with an eDP 1.4 sink that supports
DP_LINK_RATE_SET so we shouldn't use it for anything other than feed it
to the sink appropriately.
v2: Fix typo in commit message (Sivakumar)
Reviewed-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index d5c331d..0e2f982 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1579,17 +1579,14 @@
DPLL_CFGCR2_PDIV(wrpll_params.pdiv) |
wrpll_params.central_freq;
} else if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) {
- struct drm_encoder *encoder = &intel_encoder->base;
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-
- switch (intel_dp->link_bw) {
- case DP_LINK_BW_1_62:
+ switch (crtc_state->port_clock / 2) {
+ case 81000:
ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, 0);
break;
- case DP_LINK_BW_2_7:
+ case 135000:
ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, 0);
break;
- case DP_LINK_BW_5_4:
+ case 270000:
ctrl1 |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, 0);
break;
}