drm/i915: move VBT based DSI presence check to intel_bios.c
Hide knowledge about VBT child devices in intel_bios.c.
v2: Move port 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/1458125015-7931-4-git-send-email-jani.nikula@intel.com
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 7f61ca8..4b6bd6f 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1237,7 +1237,6 @@
&&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) {
DRM_DEBUG_KMS("Found MIPI as LFP\n");
dev_priv->vbt.has_mipi = 1;
- dev_priv->vbt.dsi.port = p_child->common.dvo_port;
}
child_dev_ptr = dev_priv->vbt.child_dev + count;
@@ -1555,3 +1554,41 @@
return false;
}
+
+/**
+ * intel_bios_is_dsi_present - is DSI present in VBT
+ * @dev_priv: i915 device instance
+ * @port: port for DSI if present
+ *
+ * Return true if DSI is present, and return the port in %port.
+ */
+bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv,
+ enum port *port)
+{
+ union child_device_config *p_child;
+ u8 dvo_port;
+ int i;
+
+ for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
+ p_child = dev_priv->vbt.child_dev + i;
+
+ if (!(p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT))
+ continue;
+
+ dvo_port = p_child->common.dvo_port;
+
+ switch (dvo_port) {
+ case DVO_PORT_MIPIA:
+ case DVO_PORT_MIPIC:
+ *port = dvo_port - DVO_PORT_MIPIA;
+ return true;
+ case DVO_PORT_MIPIB:
+ case DVO_PORT_MIPID:
+ DRM_DEBUG_KMS("VBT has unsupported DSI port %c\n",
+ port_name(dvo_port - DVO_PORT_MIPIA));
+ break;
+ }
+ }
+
+ return false;
+}