drm/i915: move VBT based TV presence check to intel_bios.c

Hide knowledge about VBT child devices in intel_bios.c.

v2: also move int_tv_support check to intel_bios.c (Sivakumar)

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458125015-7931-1-git-send-email-jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 33e1311..3724edd 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3353,6 +3353,7 @@ extern void intel_i2c_reset(struct drm_device *dev);
 /* intel_bios.c */
 int intel_bios_init(struct drm_i915_private *dev_priv);
 bool intel_bios_is_valid_vbt(const void *buf, size_t size);
+bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
 
 /* intel_opregion.c */
 #ifdef CONFIG_ACPI

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index bf62a19..d5e6da0 100644 (file)
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1431,3 +1431,44 @@ intel_bios_init(struct drm_i915_private *dev_priv)
 
        return 0;
 }
+
+/**
+ * intel_bios_is_tv_present - is integrated TV present in VBT
+ * @dev_priv:  i915 device instance
+ *
+ * Return true if TV is present. If no child devices were parsed from VBT,
+ * assume TV is present.
+ */
+bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv)
+{
+       union child_device_config *p_child;
+       int i;
+
+       if (!dev_priv->vbt.int_tv_support)
+               return false;
+
+       if (!dev_priv->vbt.child_dev_num)
+               return true;
+
+       for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
+               p_child = dev_priv->vbt.child_dev + i;
+               /*
+                * If the device type is not TV, continue.
+                */
+               switch (p_child->old.device_type) {
+               case DEVICE_TYPE_INT_TV:
+               case DEVICE_TYPE_TV:
+               case DEVICE_TYPE_TV_SVIDEO_COMPOSITE:
+                       break;
+               default:
+                       continue;
+               }
+               /* Only when the addin_offset is non-zero, it is regarded
+                * as present.
+                */
+               if (p_child->old.addin_offset)
+                       return true;
+       }
+
+       return false;
+}

diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index d5570c8..223129d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1519,47 +1519,6 @@ static const struct drm_encoder_funcs intel_tv_enc_funcs = {
        .destroy = intel_encoder_destroy,
 };
 
-/*
- * Enumerate the child dev array parsed from VBT to check whether
- * the integrated TV is present.
- * If it is present, return 1.
- * If it is not present, return false.
- * If no child dev is parsed from VBT, it assumes that the TV is present.
- */
-static int tv_is_present_in_vbt(struct drm_device *dev)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       union child_device_config *p_child;
-       int i, ret;
-
-       if (!dev_priv->vbt.child_dev_num)
-               return 1;
-
-       ret = 0;
-       for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
-               p_child = dev_priv->vbt.child_dev + i;
-               /*
-                * If the device type is not TV, continue.
-                */
-               switch (p_child->old.device_type) {
-               case DEVICE_TYPE_INT_TV:
-               case DEVICE_TYPE_TV:
-               case DEVICE_TYPE_TV_SVIDEO_COMPOSITE:
-                       break;
-               default:
-                       continue;
-               }
-               /* Only when the addin_offset is non-zero, it is regarded
-                * as present.
-                */
-               if (p_child->old.addin_offset) {
-                       ret = 1;
-                       break;
-               }
-       }
-       return ret;
-}
-
 void
 intel_tv_init(struct drm_device *dev)
 {
@@ -1575,13 +1534,10 @@ intel_tv_init(struct drm_device *dev)
        if ((I915_READ(TV_CTL) & TV_FUSE_STATE_MASK) == TV_FUSE_STATE_DISABLED)
                return;
 
-       if (!tv_is_present_in_vbt(dev)) {
+       if (!intel_bios_is_tv_present(dev_priv)) {
                DRM_DEBUG_KMS("Integrated TV is not present.\n");
                return;
        }
-       /* Even if we have an encoder we may not have a connector */
-       if (!dev_priv->vbt.int_tv_support)
-               return;
 
        /*
         * Sanity check the TV output by checking to see if the