drm/i915/bios: split the MIPI DSI VBT block parsing to two

There's two blocks to parse, have one function per block. The existing
one cuts neatly into two.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/6c9598e2b4d07e8d264617cdfe8b6527a74261f7.1450702954.git.jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index b6ccba1..5ea6087 100644 (file)
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -765,16 +765,12 @@ static u8 *goto_next_sequence(u8 *data, int *size)
 }
 
 static void
-parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
+parse_mipi_config(struct drm_i915_private *dev_priv,
+                 const struct bdb_header *bdb)
 {
        const struct bdb_mipi_config *start;
-       const struct bdb_mipi_sequence *sequence;
        const struct mipi_config *config;
        const struct mipi_pps_data *pps;
-       u8 *data;
-       const u8 *seq_data;
-       int i, panel_id, seq_size;
-       u16 block_size;
 
        /* parse MIPI blocks only if LFP type is MIPI */
        if (!dev_priv->vbt.has_mipi)
@@ -820,8 +816,22 @@ parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
 
        /* We have mandatory mipi config blocks. Initialize as generic panel */
        dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
+}
+
+static void
+parse_mipi_sequence(struct drm_i915_private *dev_priv,
+                   const struct bdb_header *bdb)
+{
+       const struct bdb_mipi_sequence *sequence;
+       const u8 *seq_data;
+       u8 *data;
+       u16 block_size;
+       int i, panel_id, seq_size;
+
+       /* Only our generic panel driver uses the sequence block. */
+       if (dev_priv->vbt.dsi.panel_id != MIPI_DSI_GENERIC_PANEL_ID)
+               return;
 
-       /* Check if we have sequence block as well */
        sequence = find_section(bdb, BDB_MIPI_SEQUENCE);
        if (!sequence) {
                DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n");
@@ -1359,7 +1369,8 @@ intel_bios_init(struct drm_i915_private *dev_priv)
        parse_driver_features(dev_priv, bdb);
        parse_edp(dev_priv, bdb);
        parse_psr(dev_priv, bdb);
-       parse_mipi(dev_priv, bdb);
+       parse_mipi_config(dev_priv, bdb);
+       parse_mipi_sequence(dev_priv, bdb);
        parse_ddi_ports(dev_priv, bdb);
 
        if (bios)