drm/i915: constify hotplug function vtable.

Use a macro to avoid mistakes, this type of macro is only used
in a couple of places.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/af229c1e8ec894f177b344ab77b90e32c33428de.1632869550.git.jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
index 05f76ab..3c1cec9 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -215,8 +215,8 @@ intel_hpd_irq_storm_switch_to_polling(struct drm_i915_private *dev_priv)
 
 static void intel_hpd_irq_setup(struct drm_i915_private *i915)
 {
-       if (i915->display_irqs_enabled && i915->hotplug_funcs.hpd_irq_setup)
-               i915->hotplug_funcs.hpd_irq_setup(i915);
+       if (i915->display_irqs_enabled && i915->hotplug_funcs->hpd_irq_setup)
+               i915->hotplug_funcs->hpd_irq_setup(i915);
 }
 
 static void intel_hpd_irq_storm_reenable_work(struct work_struct *work)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e01fe21..6dcd515 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -988,7 +988,7 @@ struct drm_i915_private {
        struct drm_i915_wm_disp_funcs wm_disp;
 
        /* irq display functions */
-       struct intel_hotplug_funcs hotplug_funcs;
+       const struct intel_hotplug_funcs *hotplug_funcs;
 
        /* fdi display functions */
        const struct intel_fdi_funcs *fdi_funcs;

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c35065f..77680bc 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -4345,6 +4345,20 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
        return ret;
 }
 
+#define HPD_FUNCS(platform)                                     \
+static const struct intel_hotplug_funcs platform##_hpd_funcs = { \
+       .hpd_irq_setup = platform##_hpd_irq_setup,               \
+}
+
+HPD_FUNCS(i915);
+HPD_FUNCS(dg1);
+HPD_FUNCS(gen11);
+HPD_FUNCS(bxt);
+HPD_FUNCS(icp);
+HPD_FUNCS(spt);
+HPD_FUNCS(ilk);
+#undef HPD_FUNCS
+
 /**
  * intel_irq_init - initializes irq support
  * @dev_priv: i915 device instance
@@ -4395,20 +4409,20 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 
        if (HAS_GMCH(dev_priv)) {
                if (I915_HAS_HOTPLUG(dev_priv))
-                       dev_priv->hotplug_funcs.hpd_irq_setup = i915_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &i915_hpd_funcs;
        } else {
                if (HAS_PCH_DG1(dev_priv))
-                       dev_priv->hotplug_funcs.hpd_irq_setup = dg1_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &dg1_hpd_funcs;
                else if (DISPLAY_VER(dev_priv) >= 11)
-                       dev_priv->hotplug_funcs.hpd_irq_setup = gen11_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &gen11_hpd_funcs;
                else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
-                       dev_priv->hotplug_funcs.hpd_irq_setup = bxt_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &bxt_hpd_funcs;
                else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
-                       dev_priv->hotplug_funcs.hpd_irq_setup = icp_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &icp_hpd_funcs;
                else if (INTEL_PCH_TYPE(dev_priv) >= PCH_SPT)
-                       dev_priv->hotplug_funcs.hpd_irq_setup = spt_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &spt_hpd_funcs;
                else
-                       dev_priv->hotplug_funcs.hpd_irq_setup = ilk_hpd_irq_setup;
+                       dev_priv->hotplug_funcs = &ilk_hpd_funcs;
        }
 }