[Intel-gfx] [PATCH 16/21] drm/i915: constify the dpll clock vtable

[Dave Airlie <airlied@gmail.com>]

From: Dave Airlie <airlied@redhat.com>

---
 drivers/gpu/drm/i915/display/intel_display.c |  6 +--
 drivers/gpu/drm/i915/display/intel_dpll.c    | 49 ++++++++++++++++----
 drivers/gpu/drm/i915/i915_drv.h              |  2 +-
 3 files changed, 45 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 0ad577aceb9d..d8a576d1435e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6768,10 +6768,10 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 		crtc_state->update_wm_post = true;
 
 	if (mode_changed && crtc_state->hw.enable &&
-	    dev_priv->dpll_funcs.crtc_compute_clock &&
+	    dev_priv->dpll_funcs &&
 	    !crtc_state->bigjoiner_slave &&
 	    !drm_WARN_ON(&dev_priv->drm, crtc_state->shared_dpll)) {
-		ret = dev_priv->dpll_funcs.crtc_compute_clock(crtc_state);
+		ret = dev_priv->dpll_funcs->crtc_compute_clock(crtc_state);
 		if (ret)
 			return ret;
 	}
@@ -8807,7 +8807,7 @@ static void intel_modeset_clear_plls(struct intel_atomic_state *state)
 	struct intel_crtc *crtc;
 	int i;
 
-	if (!dev_priv->dpll_funcs.crtc_compute_clock)
+	if (!dev_priv->dpll_funcs)
 		return;
 
 	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 9326c7cbb05c..3df10b88e69f 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -1363,25 +1363,58 @@ static int i8xx_crtc_compute_clock(struct intel_crtc_state *crtc_state)
 	return 0;
 }
 
+static const struct drm_i915_dpll_funcs hsw_dpll_funcs = {
+	.crtc_compute_clock = hsw_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs ilk_dpll_funcs = {
+	.crtc_compute_clock = ilk_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs chv_dpll_funcs = {
+	.crtc_compute_clock = chv_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs vlv_dpll_funcs = {
+	.crtc_compute_clock = vlv_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs g4x_dpll_funcs = {
+	.crtc_compute_clock = g4x_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs pnv_dpll_funcs = {
+	.crtc_compute_clock = pnv_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs i9xx_dpll_funcs = {
+	.crtc_compute_clock = i9xx_crtc_compute_clock
+};
+
+static const struct drm_i915_dpll_funcs i8xx_dpll_funcs = {
+	.crtc_compute_clock = i8xx_crtc_compute_clock
+};
+
+
 void
 intel_dpll_init_clock_hook(struct drm_i915_private *dev_priv)
 {
 	if (DISPLAY_VER(dev_priv) >= 9 || HAS_DDI(dev_priv))
-		dev_priv->dpll_funcs.crtc_compute_clock = hsw_crtc_compute_clock;
+		dev_priv->dpll_funcs = &hsw_dpll_funcs;
 	else if (HAS_PCH_SPLIT(dev_priv))
-		dev_priv->dpll_funcs.crtc_compute_clock = ilk_crtc_compute_clock;
+		dev_priv->dpll_funcs = &ilk_dpll_funcs;
 	else if (IS_CHERRYVIEW(dev_priv))
-		dev_priv->dpll_funcs.crtc_compute_clock = chv_crtc_compute_clock;
+		dev_priv->dpll_funcs = &chv_dpll_funcs;
 	else if (IS_VALLEYVIEW(dev_priv))
-		dev_priv->dpll_funcs.crtc_compute_clock = vlv_crtc_compute_clock;
+		dev_priv->dpll_funcs = &vlv_dpll_funcs;
 	else if (IS_G4X(dev_priv))
-		dev_priv->dpll_funcs.crtc_compute_clock = g4x_crtc_compute_clock;
+		dev_priv->dpll_funcs = &g4x_dpll_funcs;
 	else if (IS_PINEVIEW(dev_priv))
-		dev_priv->dpll_funcs.crtc_compute_clock = pnv_crtc_compute_clock;
+		dev_priv->dpll_funcs = &pnv_dpll_funcs;
 	else if (DISPLAY_VER(dev_priv) != 2)
-		dev_priv->dpll_funcs.crtc_compute_clock = i9xx_crtc_compute_clock;
+		dev_priv->dpll_funcs = &i9xx_dpll_funcs;
 	else
-		dev_priv->dpll_funcs.crtc_compute_clock = i8xx_crtc_compute_clock;
+		dev_priv->dpll_funcs = &i8xx_dpll_funcs;
 }
 
 static bool i9xx_has_pps(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8d14318c5708..a9563730aad5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1009,7 +1009,7 @@ struct drm_i915_private {
 	const struct drm_i915_fdi_link_train_funcs *fdi_funcs;
 
 	/* display pll funcs */
-	struct drm_i915_dpll_funcs dpll_funcs;
+	const struct drm_i915_dpll_funcs *dpll_funcs;
 
 	/* Display functions */
 	struct drm_i915_display_funcs display;
-- 
2.31.1