drm/i915: add intel_display_power_enabled

This should replace intel_using_power_well. The idea is that we're
adding the requested power domain as an argument, so this might enable
the code to look less platform-specific and also allows us to easily
add new domains in case we need.

v2: Add more domains to enum intel_display_power_domain
v3: Even more domains requested

Requested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b9d5711c..c46f40d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1110,8 +1110,8 @@
 	if (pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE)
 		state = true;
 
-	if (!intel_using_power_well(dev_priv->dev) &&
-	    cpu_transcoder != TRANSCODER_EDP) {
+	if (!intel_display_power_enabled(dev_priv->dev,
+				POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
 		cur_state = false;
 	} else {
 		reg = PIPECONF(cpu_transcoder);
@@ -3532,7 +3532,8 @@
 	/* XXX: Once we have proper panel fitter state tracking implemented with
 	 * hardware state read/check support we should switch to only disable
 	 * the panel fitter when we know it's used. */
-	if (intel_using_power_well(dev)) {
+	if (intel_display_power_enabled(dev,
+					POWER_DOMAIN_PIPE_PANEL_FITTER(pipe))) {
 		I915_WRITE(PF_CTL(pipe), 0);
 		I915_WRITE(PF_WIN_SZ(pipe), 0);
 	}
@@ -6039,8 +6040,8 @@
 	enum transcoder cpu_transcoder = crtc->config.cpu_transcoder;
 	uint32_t tmp;
 
-	if (!intel_using_power_well(dev_priv->dev) &&
-	    cpu_transcoder != TRANSCODER_EDP)
+	if (!intel_display_power_enabled(dev,
+			POWER_DOMAIN_TRANSCODER(cpu_transcoder)))
 		return false;
 
 	tmp = I915_READ(PIPECONF(cpu_transcoder));