[Intel-gfx] [PATCH v2 11/21] drm/i915/mtl: C20 HDMI state calculations

[Mika Kahola]

Add C20 HDMI state calculations and put HDMI table definitions
in use.

Signed-off-by: Mika Kahola <mika.kahola at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221014124740.774835-12-mika.kahola@intel.com
---
 drivers/gpu/drm/i915/display/intel_cx0_phy.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index 14ea40cd0631..e5542fb209ab 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -1732,9 +1732,19 @@ intel_c20_pll_tables_get(struct intel_crtc_state *crtc_state,
 int intel_c20pll_calc_state(struct intel_crtc_state *crtc_state,
 	                    struct intel_encoder *encoder)
 {
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	enum phy phy = intel_port_to_phy(i915, encoder->port);
 	const struct intel_c20pll_state * const *tables;
 	int i;
 
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+		if (intel_c20_phy_check_hdmi_link_rate(crtc_state->port_clock) != MODE_OK) {
+			drm_dbg_kms(&i915->drm, "Can't support HDMI link rate %d on phy %c.\n",
+				    crtc_state->port_clock, phy_name(phy));
+			return -EINVAL;
+		}
+	}
+
 	tables = intel_c20_pll_tables_get(crtc_state, encoder);
 	if (!tables)
 		return -EINVAL;
-- 
2.34.1