drm/i915/display: Use struct intel_display instead of struct drm_i915_private

Let's start using struct intel_display instead of struct drm_i915_private
when introducing new code. No functional changes.

v2: Drop tc_to_intel_display() helper function (Jani)

Signed-off-by: Mika Kahola <[email protected]>
Reviewed-by: Chaitanya Kumar Borah <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: mkahola

drivers/gpu/drm/i915/display/intel_tc.c

@@ -1043,23 +1043,22 @@ static void xelpdp_tc_power_request_wa(struct intel_display *display, bool enabl
 
 static void __xelpdp_tc_phy_enable_tcss_power(struct intel_tc_port *tc, bool enable)
 {
-	struct drm_i915_private *i915 = tc_to_i915(tc);
-	struct intel_display *display = &i915->display;
+	struct intel_display *display = to_intel_display(tc->dig_port);
 	enum port port = tc->dig_port->base.port;
-	i915_reg_t reg = XELPDP_PORT_BUF_CTL1(i915, port);
+	i915_reg_t reg = XELPDP_PORT_BUF_CTL1(display, port);
 	u32 val;
 
 	assert_tc_cold_blocked(tc);
 
 	if (DISPLAY_VER(display) == 30)
 		xelpdp_tc_power_request_wa(display, enable);
 
-	val = intel_de_read(i915, reg);
+	val = intel_de_read(display, reg);
 	if (enable)
 		val |= XELPDP_TCSS_POWER_REQUEST;
 	else
 		val &= ~XELPDP_TCSS_POWER_REQUEST;
-	intel_de_write(i915, reg, val);
+	intel_de_write(display, reg, val);
 }
 
 static bool xelpdp_tc_phy_enable_tcss_power(struct intel_tc_port *tc, bool enable)