[Intel-gfx] [PATCH 1/3] drm/i915: Broadwell modeset global pipes to atomic

[Mika Kahola]

Convert 'broadwell_modeset_global_pipes()' into atomic
mode setting.

Signed-off-by: Mika Kahola <mika.kah...@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index 3f48917..953eda7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9683,6 +9683,10 @@ static int broadwell_modeset_global_pipes(struct 
drm_atomic_state *state)
        struct drm_crtc_state *crtc_state;
        int max_pixclk = ilk_max_pixel_rate(dev_priv);
        int cdclk, i;
+       int ret = 0;
+
+       if (max_pixclk < 0)
+               return max_pixclk;
 
        cdclk = broadwell_calc_cdclk(dev_priv, max_pixclk);
 
@@ -9697,14 +9701,22 @@ static int broadwell_modeset_global_pipes(struct 
drm_atomic_state *state)
                crtc_state = drm_atomic_get_crtc_state(state, crtc);
                if (IS_ERR(crtc_state))
                        return PTR_ERR(crtc_state);
-       }
 
-       /* disable/enable all currently active pipes while we change cdclk */
-       for_each_crtc_in_state(state, crtc, crtc_state, i)
-               if (crtc_state->enable)
-                       crtc_state->mode_changed = true;
+               if (!crtc_state->active || needs_modeset(crtc_state))
+                       continue;
 
-       return 0;
+               crtc_state->mode_changed = true;
+
+               ret = drm_atomic_add_affected_connectors(state, crtc);
+               if (ret)
+                       break;
+
+               ret = drm_atomic_add_affected_planes(state, crtc);
+               if (ret)
+                       break;
+       }
+
+       return ret;
 }
 
 static void broadwell_modeset_global_resources(struct drm_atomic_state *state)
-- 
1.9.1

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