drm/i915/display: Simplify GLK display version tests

GLK has always been a bit of a special case since it reports INTEL_GEN()
as 9, but has version 10 display IP.  Now we can properly represent the
display version as 10 and simplify the display generation tests
throughout the display code.

Aside from manually adding the version to the glk_info structure, the
rest of this patch is generated with a Coccinelle semantic patch.  Note
that we also need to switch any code that matches gen10 today but *not*
GLK to be CNL-specific:

        @@ expression dev_priv; @@
        - DISPLAY_VER(dev_priv) > 9
        + DISPLAY_VER(dev_priv) >= 10

        @@ expression dev_priv, E; @@
        (
        - DISPLAY_VER(dev_priv) >= 10 && E
        + (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)) && E
        |
        - DISPLAY_VER(dev_priv) >= 10
        + DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)
        |
        - IS_DISPLAY_RANGE(dev_priv, 10, E)
        + IS_DISPLAY_RANGE(dev_priv, 11, E) || IS_CANNONLAKE(dev_priv)
        )

        @@ expression dev_priv, E, E2; @@
        (
        - (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
        + IS_DISPLAY_VER(dev_priv, 10)
        |
        - E || IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)
        + E || IS_DISPLAY_VER(dev_priv, 10)
        |
        - (IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv))
        + IS_DISPLAY_VER(dev_priv, 10)
        |
        - IS_GEMINILAKE(dev_priv) || E || IS_CANNONLAKE(dev_priv)
        + E || IS_DISPLAY_VER(dev_priv, 10)
        |
        - E || IS_GEMINILAKE(dev_priv) || E2 || IS_CANNONLAKE(dev_priv)
        + E || E2 || IS_DISPLAY_VER(dev_priv, 10)
        |
        - (IS_DISPLAY_VER(dev_priv, 10) || IS_GEMINILAKE(dev_priv))
        + IS_DISPLAY_VER(dev_priv, 10)
        |
        - (IS_GEMINILAKE(dev_priv) || IS_DISPLAY_VER(dev_priv, 10))
        + IS_DISPLAY_VER(dev_priv, 10)
        )

        @@ expression dev_priv; @@
        - (IS_DISPLAY_VER(dev_priv, 9) && !IS_GEMINILAKE(dev_priv))
        + IS_DISPLAY_VER(dev_priv, 9)

        @@ expression dev_priv; @@
        (
        - !(DISPLAY_VER(dev_priv) >= 11 || IS_DISPLAY_VER(dev_priv, 10))
        + DISPLAY_VER(dev_priv) < 10
        |
        - (DISPLAY_VER(dev_priv) >= 11 || IS_DISPLAY_VER(dev_priv, 10))
        + DISPLAY_VER(dev_priv) >= 10
        )

        @@ expression dev_priv, E; @@
        - E || DISPLAY_VER(dev_priv) >= 11 || IS_DISPLAY_VER(dev_priv, 10)
        + E || DISPLAY_VER(dev_priv) >= 10

        @@ expression dev_priv, E; @@
        - (IS_DISPLAY_RANGE(dev_priv, 11, E) || IS_DISPLAY_VER(dev_priv, 10))
        + IS_DISPLAY_RANGE(dev_priv, 10, E)

        @@ expression dev_priv; @@
        (
        - DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv) || IS_GEN9_LP(dev_priv)
        + DISPLAY_VER(dev_priv) >= 10 || IS_GEN9_LP(dev_priv)
        |
        - IS_GEN9_LP(dev_priv) || DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)
        + IS_GEN9_LP(dev_priv) || DISPLAY_VER(dev_priv) >= 10
        )

        @@ expression dev_priv, E; @@
        - !(DISPLAY_VER(dev_priv) >= E)
        + DISPLAY_VER(dev_priv) < E

v2:
 - Convert gen10 conditions that don't include GLK into CNL conditions.
   (Ville)

v3:
 - Rework coccinelle rules so that "ver>=10" turns into "ver>=11||is_cnl." (Ville)

v3.1:
 - Manually re-add the ".display.version = 10" to glk_info after
   regenerating patch via Coccinelle.

v4:
 - Also apply cocci rules to intel_pm.c and i915_irq.c!  (CI)

Cc: Ville Syrjälä <ville.syrjala@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210322233840.4056851-1-matthew.d.roper@intel.com

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 4208356d9875..bde9cc4b6e0f 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3259,7 +3259,7 @@ static bool needs_nv12_wa(const struct intel_crtc_state *crtc_state)
 		return false;
 
 	/* WA Display #0827: Gen9:all */
-	if (IS_DISPLAY_VER(dev_priv, 9) && !IS_GEMINILAKE(dev_priv))
+	if (IS_DISPLAY_VER(dev_priv, 9))
 		return true;
 
 	return false;
@@ -3989,7 +3989,7 @@ static void hsw_crtc_enable(struct intel_atomic_state *state,
 	crtc->active = true;
 
 	/* Display WA #1180: WaDisableScalarClockGating: glk, cnl */
-	psl_clkgate_wa = (IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
+	psl_clkgate_wa = IS_DISPLAY_VER(dev_priv, 10) &&
 		new_crtc_state->pch_pfit.enabled;
 	if (psl_clkgate_wa)
 		glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, true);
@@ -13338,8 +13338,7 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
 			 * use plane->min_cdclk() :(
 			 */
 			if (plane_state->uapi.visible && plane->min_cdclk) {
-				if (crtc_state->double_wide ||
-				    DISPLAY_VER(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
+				if (crtc_state->double_wide || DISPLAY_VER(dev_priv) >= 10)
 					crtc_state->min_cdclk[plane->id] =
 						DIV_ROUND_UP(crtc_state->pixel_rate, 2);
 				else
@@ -13430,7 +13429,7 @@ static void intel_early_display_was(struct drm_i915_private *dev_priv)
 	 * Display WA #1185 WaDisableDARBFClkGating:cnl,glk,icl,ehl,tgl
 	 * Also known as Wa_14010480278.
 	 */
-	if (IS_DISPLAY_RANGE(dev_priv, 10, 12) || IS_GEMINILAKE(dev_priv))
+	if (IS_DISPLAY_RANGE(dev_priv, 10, 12))
 		intel_de_write(dev_priv, GEN9_CLKGATE_DIS_0,
 			       intel_de_read(dev_priv, GEN9_CLKGATE_DIS_0) | DARBF_GATING_DIS);