[Intel-gfx] [PATCH 19/21] drm/i915: constify display function vtable

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

---
 drivers/gpu/drm/i915/display/intel_display.c | 81 ++++++++++++--------
 drivers/gpu/drm/i915/i915_drv.h              |  2 +-
 2 files changed, 52 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 09c9dc741026..20fd35c6858c 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3736,7 +3736,7 @@ static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
 
 	drm_WARN_ON(&dev_priv->drm, IS_ERR(temp_crtc_state) || ret);
 
-	dev_priv->display.crtc_disable(to_intel_atomic_state(state), crtc);
+	dev_priv->display->crtc_disable(to_intel_atomic_state(state), crtc);
 
 	drm_atomic_state_put(state);
 
@@ -5941,7 +5941,7 @@ static bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state)
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
 
-	if (!i915->display.get_pipe_config(crtc, crtc_state))
+	if (!i915->display->get_pipe_config(crtc, crtc_state))
 		return false;
 
 	crtc_state->hw.active = true;
@@ -9778,7 +9778,7 @@ static void intel_enable_crtc(struct intel_atomic_state *state,
 
 	intel_crtc_update_active_timings(new_crtc_state);
 
-	dev_priv->display.crtc_enable(state, crtc);
+	dev_priv->display->crtc_enable(state, crtc);
 
 	if (new_crtc_state->bigjoiner_slave)
 		return;
@@ -9866,7 +9866,7 @@ static void intel_old_crtc_state_disables(struct intel_atomic_state *state,
 	 */
 	intel_crtc_disable_pipe_crc(crtc);
 
-	dev_priv->display.crtc_disable(state, crtc);
+	dev_priv->display->crtc_disable(state, crtc);
 	crtc->active = false;
 	intel_fbc_disable(crtc);
 	intel_disable_shared_dpll(old_crtc_state);
@@ -10246,7 +10246,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	}
 
 	/* Now enable the clocks, plane, pipe, and connectors that we set up. */
-	dev_priv->display.commit_modeset_enables(state);
+	dev_priv->display->commit_modeset_enables(state);
 
 	if (state->modeset) {
 		intel_encoders_update_complete(state);
@@ -11250,6 +11250,46 @@ static const struct drm_mode_config_funcs intel_mode_funcs = {
 	.atomic_state_free = intel_atomic_state_free,
 };
 
+static const struct drm_i915_display_funcs skl_display_funcs = {
+	.get_pipe_config = hsw_get_pipe_config,
+	.crtc_enable = hsw_crtc_enable,
+	.crtc_disable = hsw_crtc_disable,
+	.commit_modeset_enables = skl_commit_modeset_enables,
+	.get_initial_plane_config = skl_get_initial_plane_config,
+};
+
+static const struct drm_i915_display_funcs ddi_display_funcs = {
+	.get_pipe_config = hsw_get_pipe_config,
+	.crtc_enable = hsw_crtc_enable,
+	.crtc_disable = hsw_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+static const struct drm_i915_display_funcs pch_split_display_funcs = {
+	.get_pipe_config = ilk_get_pipe_config,
+	.crtc_enable = ilk_crtc_enable,
+	.crtc_disable = ilk_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+static const struct drm_i915_display_funcs vlv_display_funcs = {
+	.get_pipe_config = i9xx_get_pipe_config,
+	.crtc_enable = valleyview_crtc_enable,
+	.crtc_disable = i9xx_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
+static const struct drm_i915_display_funcs i9xx_display_funcs = {
+	.get_pipe_config = i9xx_get_pipe_config,
+	.crtc_enable = i9xx_crtc_enable,
+	.crtc_disable = i9xx_crtc_disable,
+	.commit_modeset_enables = intel_commit_modeset_enables,
+	.get_initial_plane_config = i9xx_get_initial_plane_config,
+};
+
 /**
  * intel_init_display_hooks - initialize the display modesetting hooks
  * @dev_priv: device private
@@ -11265,38 +11305,19 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
 	intel_dpll_init_clock_hook(dev_priv);
 
 	if (DISPLAY_VER(dev_priv) >= 9) {
-		dev_priv->display.get_pipe_config = hsw_get_pipe_config;
-		dev_priv->display.crtc_enable = hsw_crtc_enable;
-		dev_priv->display.crtc_disable = hsw_crtc_disable;
+		dev_priv->display = &skl_display_funcs;
 	} else if (HAS_DDI(dev_priv)) {
-		dev_priv->display.get_pipe_config = hsw_get_pipe_config;
-		dev_priv->display.crtc_enable = hsw_crtc_enable;
-		dev_priv->display.crtc_disable = hsw_crtc_disable;
+		dev_priv->display = &ddi_display_funcs;
 	} else if (HAS_PCH_SPLIT(dev_priv)) {
-		dev_priv->display.get_pipe_config = ilk_get_pipe_config;
-		dev_priv->display.crtc_enable = ilk_crtc_enable;
-		dev_priv->display.crtc_disable = ilk_crtc_disable;
+		dev_priv->display = &pch_split_display_funcs;
 	} else if (IS_CHERRYVIEW(dev_priv) ||
 		   IS_VALLEYVIEW(dev_priv)) {
-		dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
-		dev_priv->display.crtc_enable = valleyview_crtc_enable;
-		dev_priv->display.crtc_disable = i9xx_crtc_disable;
+		dev_priv->display = &vlv_display_funcs;
 	} else {
-		dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
-		dev_priv->display.crtc_enable = i9xx_crtc_enable;
-		dev_priv->display.crtc_disable = i9xx_crtc_disable;
+		dev_priv->display = &i9xx_display_funcs;
 	}
 
 	intel_fdi_init_hook(dev_priv);
-
-	if (DISPLAY_VER(dev_priv) >= 9) {
-		dev_priv->display.commit_modeset_enables = skl_commit_modeset_enables;
-		dev_priv->display.get_initial_plane_config = skl_get_initial_plane_config;
-	} else {
-		dev_priv->display.commit_modeset_enables = intel_commit_modeset_enables;
-		dev_priv->display.get_initial_plane_config = i9xx_get_initial_plane_config;
-	}
-
 }
 
 void intel_modeset_init_hw(struct drm_i915_private *i915)
@@ -11723,7 +11744,7 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915)
 		 * can even allow for smooth boot transitions if the BIOS
 		 * fb is large enough for the active pipe configuration.
 		 */
-		i915->display.get_initial_plane_config(crtc, &plane_config);
+		i915->display->get_initial_plane_config(crtc, &plane_config);
 
 		/*
 		 * If the fb is shared between multiple heads, we'll
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2231b93c2111..fbcafc7cc075 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1005,7 +1005,7 @@ struct drm_i915_private {
 	const struct drm_i915_dpll_funcs *dpll_funcs;
 
 	/* Display functions */
-	struct drm_i915_display_funcs display;
+	const struct drm_i915_display_funcs *display;
 
 	/* Display internal color functions */
 	const struct drm_i915_display_color_funcs *color_funcs;
-- 
2.31.1