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

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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
This commit is contained in:
Jani Nikula
2016-03-16 12:43:32 +02:00
parent 951d9efe07
commit 7137aec1cf
3 changed files with 47 additions and 11 deletions
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39
drivers/gpu/drm/i915/intel_bios.c
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@@ -1237,7 +1237,6 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
&&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 @@ bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
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;
}