[Intel-gfx] [PATCH 33/35] drm/i915: Don't use plane update helper in legacy mode set

[Ander Conselvan de Oliveira]

Use lower level calls to better integrate with the modeset code and
allow a full state swap in a follow up patch.

Signed-off-by: Ander Conselvan de Oliveira 
<ander.conselvan.de.olive...@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 47 +++++++++++++++++++-----------------
 1 file changed, 25 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index edfe198..99a3bc0 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12244,6 +12244,23 @@ static int __intel_set_mode_checks(struct 
drm_atomic_state *state)
        return 0;
 }
 
+static void __intel_set_mode_swap_plane_state(struct drm_device *dev,
+                                             struct drm_atomic_state *state)
+{
+       int i;
+
+       for (i = 0; i < dev->mode_config.num_total_plane; i++) {
+               struct drm_plane *plane = state->planes[i];
+
+               if (!plane)
+                       continue;
+
+               plane->state->state = state;
+               swap(state->plane_states[i], plane->state);
+               plane->state->state = NULL;
+       }
+}
+
 static int __intel_set_mode(struct drm_crtc *modeset_crtc,
                            struct intel_crtc_state *pipe_config)
 {
@@ -12254,8 +12271,6 @@ static int __intel_set_mode(struct drm_crtc 
*modeset_crtc,
        struct intel_crtc *intel_crtc;
        struct drm_crtc *crtc;
        struct drm_crtc_state *crtc_state;
-       struct drm_plane *plane;
-       struct drm_plane_state *plane_state;
        int ret = 0;
        int i;
 
@@ -12263,6 +12278,10 @@ static int __intel_set_mode(struct drm_crtc 
*modeset_crtc,
        if (ret < 0)
                return ret;
 
+       ret = drm_atomic_helper_prepare_planes(dev, state);
+       if (ret)
+               return ret;
+
        crtc_state_copy = kmalloc(sizeof(*crtc_state_copy), GFP_KERNEL);
        if (!crtc_state_copy)
                return -ENOMEM;
@@ -12307,26 +12326,8 @@ static int __intel_set_mode(struct drm_crtc 
*modeset_crtc,
 
        modeset_update_crtc_power_domains(state);
 
-       for_each_plane_in_state(state, plane, plane_state, i) {
-               if (WARN_ON(plane != modeset_crtc->primary))
-                       continue;
-
-               /* Primary plane is disabled in intel_crtc_disable() */
-               if (!pipe_config->base.enable)
-                       continue;
-
-               ret = drm_plane_helper_update(plane, plane_state->crtc,
-                                             plane_state->fb,
-                                             plane_state->crtc_x,
-                                             plane_state->crtc_y,
-                                             plane_state->crtc_w,
-                                             plane_state->crtc_h,
-                                             plane_state->src_x,
-                                             plane_state->src_y,
-                                             plane_state->src_w,
-                                             plane_state->src_h);
-               WARN_ON(ret != 0);
-       }
+       __intel_set_mode_swap_plane_state(dev, state);
+       drm_atomic_helper_commit_planes(dev, state);
 
        /* Now enable the clocks, plane, pipe, and connectors that we set up. */
        for_each_crtc_in_state(state, crtc, crtc_state, i) {
@@ -12349,6 +12350,8 @@ static int __intel_set_mode(struct drm_crtc 
*modeset_crtc,
        intel_crtc->config = crtc_state_copy;
        intel_crtc->base.state = &crtc_state_copy->base;
 
+       drm_atomic_helper_cleanup_planes(dev, state);
+
        drm_atomic_state_free(state);
 
        return 0;
-- 
2.1.0

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