diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8f68678f361f..4063ee1dec17 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1222,6 +1222,7 @@ struct intel_vbt_data { unsigned int lvds_use_ssc:1; unsigned int display_clock_mode:1; unsigned int fdi_rx_polarity_inverted:1; + unsigned int has_mipi:1; int lvds_ssc_freq; unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */ @@ -1245,6 +1246,7 @@ struct intel_vbt_data { /* MIPI DSI */ struct { + u16 port; u16 panel_id; struct mipi_config *config; struct mipi_pps_data *pps; diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 2945f57c53ee..3d43da6d3482 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -720,6 +720,10 @@ parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb) int i, panel_id, seq_size; u16 block_size; + /* parse MIPI blocks only if LFP type is MIPI */ + if (!dev_priv->vbt.has_mipi) + return; + /* Initialize this to undefined indicating no generic MIPI support */ dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID; @@ -1035,6 +1039,15 @@ parse_device_mapping(struct drm_i915_private *dev_priv, /* skip the device block if device type is invalid */ continue; } + + if (p_child->common.dvo_port >= DVO_PORT_MIPIA + && p_child->common.dvo_port <= DVO_PORT_MIPID + &&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; count++; memcpy((void *)child_dev_ptr, (void *)p_child, diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index 6009debebaaf..b98667796337 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -743,6 +743,10 @@ int intel_parse_bios(struct drm_device *dev); #define DVO_PORT_DPC 8 #define DVO_PORT_DPD 9 #define DVO_PORT_DPA 10 +#define DVO_PORT_MIPIA 21 +#define DVO_PORT_MIPIB 22 +#define DVO_PORT_MIPIC 23 +#define DVO_PORT_MIPID 24 /* Block 52 contains MIPI Panel info * 6 such enteries will there. Index into correct diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index e73bec616904..944a4211aa91 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -660,6 +660,10 @@ bool intel_dsi_init(struct drm_device *dev) DRM_DEBUG_KMS("\n"); + /* There is no detection method for MIPI so rely on VBT */ + if (!dev_priv->vbt.has_mipi) + return false; + intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); if (!intel_dsi) return false;