drm/i915/dsi: call vbt_panel_get_modes directly instead of via drm_panel

Commit 18a00095 ("drm/i915/dsi: Make intel_dsi_enable/disable
directly exec VBT sequences") started calling the VBT sequence functions
directly instead of using the drm_panel hooks. Remove the last drm_panel
hook by calling vbt_panel_get_modes() directly. No functional changes.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Madhav Chauhan <madhav.chauhan@intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/63d0d41f29583507f5968b42b5f52e6574a1f245.1488810382.git.jani.nikula@intel.com

drivers/gpu/drm/i915/intel_dsi.c

@@ -1843,7 +1843,7 @@ void intel_dsi_init(struct drm_i915_private *dev_priv)
 	drm_panel_attach(intel_dsi->panel, connector);
 
 	mutex_lock(&dev->mode_config.mutex);
-	drm_panel_get_modes(intel_dsi->panel);
+	intel_dsi_vbt_get_modes(intel_dsi->panel);
 	list_for_each_entry(scan, &connector->probed_modes, head) {
 		if ((scan->type & DRM_MODE_TYPE_PREFERRED)) {
 			fixed_mode = drm_mode_duplicate(dev, scan);

drivers/gpu/drm/i915/intel_dsi.h

@@ -147,6 +147,7 @@ void intel_dsi_reset_clocks(struct intel_encoder *encoder,
 			    enum port port);
 
 struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id);
+int intel_dsi_vbt_get_modes(struct drm_panel *panel);
 enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);
 
 #endif /* _INTEL_DSI_H */

drivers/gpu/drm/i915/intel_dsi_panel_vbt.c

@@ -492,7 +492,7 @@ void intel_dsi_exec_vbt_sequence(struct intel_dsi *intel_dsi,
 	}
 }
 
-static int vbt_panel_get_modes(struct drm_panel *panel)
+int intel_dsi_vbt_get_modes(struct drm_panel *panel)
 {
 	struct vbt_panel *vbt_panel = to_vbt_panel(panel);
 	struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
@@ -514,10 +514,6 @@ static int vbt_panel_get_modes(struct drm_panel *panel)
 	return 1;
 }
 
-static const struct drm_panel_funcs vbt_panel_funcs = {
-	.get_modes = vbt_panel_get_modes,
-};
-
 struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 {
 	struct drm_device *dev = intel_dsi->base.base.dev;
@@ -816,7 +812,6 @@ struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 
 	vbt_panel->intel_dsi = intel_dsi;
 	drm_panel_init(&vbt_panel->panel);
-	vbt_panel->panel.funcs = &vbt_panel_funcs;
 	drm_panel_add(&vbt_panel->panel);
 
 	/* a regular driver would get the device in probe */