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, 5 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 9aff790817c0..ef1911f11739 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -806,7 +806,7 @@ static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 		vtotal /= 2;
 
-	if (IS_DISPLAY_VER(dev_priv, 2))
+	if (DISPLAY_VER(dev_priv) == 2)
 		position = intel_de_read_fw(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN2;
 	else
 		position = intel_de_read_fw(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN3;
@@ -857,7 +857,7 @@ static bool i915_get_crtc_scanoutpos(struct drm_crtc *_crtc,
 	int vbl_start, vbl_end, hsync_start, htotal, vtotal;
 	unsigned long irqflags;
 	bool use_scanline_counter = DISPLAY_VER(dev_priv) >= 5 ||
-		IS_G4X(dev_priv) || IS_DISPLAY_VER(dev_priv, 2) ||
+		IS_G4X(dev_priv) || DISPLAY_VER(dev_priv) == 2 ||
 		crtc->mode_flags & I915_MODE_FLAG_USE_SCANLINE_COUNTER;
 
 	if (drm_WARN_ON(&dev_priv->drm, !mode->crtc_clock)) {
@@ -2077,7 +2077,7 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
 		intel_uncore_write(&dev_priv->uncore, SDEIIR, pch_iir);
 	}
 
-	if (IS_DISPLAY_VER(dev_priv, 5) && de_iir & DE_PCU_EVENT)
+	if (DISPLAY_VER(dev_priv) == 5 && de_iir & DE_PCU_EVENT)
 		gen5_rps_irq_handler(&dev_priv->gt.rps);
 }
 
@@ -2287,10 +2287,10 @@ static u32 gen8_de_port_aux_mask(struct drm_i915_private *dev_priv)
 			GEN9_AUX_CHANNEL_C |
 			GEN9_AUX_CHANNEL_D;
 
-	if (IS_CNL_WITH_PORT_F(dev_priv) || IS_DISPLAY_VER(dev_priv, 11))
+	if (IS_CNL_WITH_PORT_F(dev_priv) || DISPLAY_VER(dev_priv) == 11)
 		mask |= CNL_AUX_CHANNEL_F;
 
-	if (IS_DISPLAY_VER(dev_priv, 11))
+	if (DISPLAY_VER(dev_priv) == 11)
 		mask |= ICL_AUX_CHANNEL_E;
 
 	return mask;