drm/i915/cursor: Extract intel_cursor_mode_config_init()

Move the max cursor size initialization into intel_cursor.c
so that all the platform specific details about cursors are
concentrated in one file.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251107181126.5743-9-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

Author: vsyrjala

drivers/gpu/drm/i915/display/intel_cursor.c

@@ -1092,3 +1092,20 @@ intel_cursor_plane_create(struct intel_display *display,
 
 	return ERR_PTR(ret);
 }
+
+void intel_cursor_mode_config_init(struct intel_display *display)
+{
+	struct drm_mode_config *mode_config = &display->drm->mode_config;
+
+	if (display->platform.i845g || display->platform.i865g) {
+		mode_config->cursor_width = display->platform.i845g ? 64 : 512;
+		mode_config->cursor_height = 1023;
+	} else if (display->platform.i830 || display->platform.i85x ||
+		   display->platform.i915g || display->platform.i915gm) {
+		mode_config->cursor_width = 64;
+		mode_config->cursor_height = 64;
+	} else {
+		mode_config->cursor_width = 256;
+		mode_config->cursor_height = 256;
+	}
+}

drivers/gpu/drm/i915/display/intel_cursor.h

@@ -17,4 +17,6 @@ intel_cursor_plane_create(struct intel_display *display,
 
 void intel_cursor_unpin_work(struct kthread_work *base);
 
+void intel_cursor_mode_config_init(struct intel_display *display);
+
 #endif

drivers/gpu/drm/i915/display/intel_display_driver.c

@@ -29,6 +29,7 @@
 #include "intel_cdclk.h"
 #include "intel_color.h"
 #include "intel_crtc.h"
+#include "intel_cursor.h"
 #include "intel_dbuf_bw.h"
 #include "intel_display_core.h"
 #include "intel_display_debugfs.h"
@@ -148,17 +149,7 @@ static void intel_mode_config_init(struct intel_display *display)
 		mode_config->max_height = 2048;
 	}
 
-	if (display->platform.i845g || display->platform.i865g) {
-		mode_config->cursor_width = display->platform.i845g ? 64 : 512;
-		mode_config->cursor_height = 1023;
-	} else if (display->platform.i830 || display->platform.i85x ||
-		   display->platform.i915g || display->platform.i915gm) {
-		mode_config->cursor_width = 64;
-		mode_config->cursor_height = 64;
-	} else {
-		mode_config->cursor_width = 256;
-		mode_config->cursor_height = 256;
-	}
+	intel_cursor_mode_config_init(display);
 }
 
 static void intel_mode_config_cleanup(struct intel_display *display)