drm/i915/display: rename display version macros

While converting the rest of the driver to use GRAPHICS_VER() and
MEDIA_VER(), following what was done for display, some discussions went
back on what we did for display:

	1) Why is the == comparison special that deserves a separate
	macro instead of just getting the version and comparing directly
	like is done for >, >=, <=?

	2) IS_DISPLAY_RANGE() is weird in that it omits the "_VER" for
	brevity. If we remove the current users of IS_DISPLAY_VER(), we
	could actually repurpose it for a range check

With (1) there could be an advantage if we used gen_mask since multiple
conditionals be combined by the compiler in a single and instruction and
check the result. However a) INTEL_GEN() doesn't use the mask since it
would make the code bigger everywhere else and b) in the cases it made
sense, it also made sense to convert to the _RANGE() variant.

So here we repurpose IS_DISPLAY_VER() to work with a [ from, to ] range
like was the IS_DISPLAY_RANGE() and convert the current IS_DISPLAY_VER()
users to use == and != operators. Aside from the definition changes,
this was done by the following semantic patch:

	@@ expression dev_priv, E1; @@
	- !IS_DISPLAY_VER(dev_priv, E1)
	+ DISPLAY_VER(dev_priv) != E1

	@@ expression dev_priv, E1; @@
	- IS_DISPLAY_VER(dev_priv, E1)
	+ DISPLAY_VER(dev_priv) == E1

	@@ expression dev_priv, from, until; @@
	- IS_DISPLAY_RANGE(dev_priv, from, until)
	+ IS_DISPLAY_VER(dev_priv, from, until)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
[Jani: Minor conflict resolve while applying.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210413051002.92589-4-lucas.demarchi@intel.com

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
index fdd25861edd5..58d6417b8f3e 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
@@ -881,7 +881,7 @@ intel_ddi_get_buf_trans_edp(struct intel_encoder *encoder, int *n_entries)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
-	if (IS_DISPLAY_VER(dev_priv, 9) && !IS_BROXTON(dev_priv)) {
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv)) {
 		const struct ddi_buf_trans *ddi_translations =
 			skl_get_buf_trans_edp(encoder, n_entries);
 		*n_entries = skl_buf_trans_num_entries(encoder->port, *n_entries);
@@ -919,7 +919,7 @@ intel_ddi_get_buf_trans_hdmi(struct intel_encoder *encoder,
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
-	if (IS_DISPLAY_VER(dev_priv, 9) && !IS_BROXTON(dev_priv)) {
+	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv)) {
 		return skl_get_buf_trans_hdmi(dev_priv, n_entries);
 	} else if (IS_BROADWELL(dev_priv)) {
 		*n_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
@@ -1361,7 +1361,7 @@ int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
 		else
 			tgl_get_dkl_buf_trans_hdmi(encoder, crtc_state, &n_entries);
 		*default_entry = n_entries - 1;
-	} else if (IS_DISPLAY_VER(dev_priv, 11)) {
+	} else if (DISPLAY_VER(dev_priv) == 11) {
 		if (intel_phy_is_combo(dev_priv, phy))
 			icl_get_combo_buf_trans_hdmi(encoder, crtc_state, &n_entries);
 		else
@@ -1373,7 +1373,7 @@ int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
 	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
 		bxt_get_buf_trans_hdmi(encoder, &n_entries);
 		*default_entry = n_entries - 1;
-	} else if (IS_DISPLAY_VER(dev_priv, 9)) {
+	} else if (DISPLAY_VER(dev_priv) == 9) {
 		intel_ddi_get_buf_trans_hdmi(encoder, &n_entries);
 		*default_entry = 8;
 	} else if (IS_BROADWELL(dev_priv)) {