drm/i915: Extract hsw_panel_transcoders()

Extract the "panel transcoder" bitmask into a helper. We'll
have a couple of uses for this later.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210913144440.23008-9-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3163a72..f6c0c59 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5599,21 +5599,27 @@ out:
        return ret;
 }
 
+static u8 hsw_panel_transcoders(struct drm_i915_private *i915)
+{
+       u8 panel_transcoder_mask = BIT(TRANSCODER_EDP);
+
+       if (DISPLAY_VER(i915) >= 11)
+               panel_transcoder_mask |= BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
+
+       return panel_transcoder_mask;
+}
+
 static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
                                     struct intel_crtc_state *pipe_config,
                                     struct intel_display_power_domain_set *power_domain_set)
 {
        struct drm_device *dev = crtc->base.dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       unsigned long panel_transcoder_mask = BIT(TRANSCODER_EDP);
+       u8 panel_transcoder_mask = hsw_panel_transcoders(dev_priv);
        unsigned long enabled_panel_transcoders = 0;
        enum transcoder panel_transcoder;
        u32 tmp;
 
-       if (DISPLAY_VER(dev_priv) >= 11)
-               panel_transcoder_mask |=
-                       BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
-
        /*
         * The pipe->transcoder mapping is fixed with the exception of the eDP
         * and DSI transcoders handled below.