drm/omap: fix primary-plane's possible_crtcs

We set the possible_crtc for all planes to "(1 << priv->num_crtcs) - 1",
which is fine as the HW planes can be used fro all crtcs. However, when
we're doing that, we are still incrementing 'num_crtcs', and we'll end
up with bad possible_crtcs, preventing the use of the primary planes.

This patch passes a possible_crtcs mask to plane init function so that
we get correct possible_crtc.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

3 files changed, 17 insertions, 9 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 39c5312b466c..fdc83cbcde61 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -267,13 +267,15 @@ cleanup:
 }
 
 static int omap_modeset_create_crtc(struct drm_device *dev, int id,
-                                    enum omap_channel channel)
+                                    enum omap_channel channel,
+                                    u32 possible_crtcs)
 {
         struct omap_drm_private *priv = dev->dev_private;
         struct drm_plane *plane;
         struct drm_crtc *crtc;
 
-        plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY);
+        plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY,
+                possible_crtcs);
         if (IS_ERR(plane))
                 return PTR_ERR(plane);
 
@@ -309,6 +311,7 @@ static int omap_modeset_init(struct drm_device *dev)
         int num_crtcs;
         int i, id = 0;
         int ret;
+        u32 possible_crtcs;
 
         drm_mode_config_init(dev);
 
@@ -325,6 +328,7 @@ static int omap_modeset_init(struct drm_device *dev)
          * We use the num_crtc argument to limit the number of crtcs we create.
          */
         num_crtcs = min3(num_crtc, num_mgrs, num_ovls);
+        possible_crtcs = (1 << num_crtcs) - 1;
 
         dssdev = NULL;
 
@@ -388,7 +392,8 @@ static int omap_modeset_init(struct drm_device *dev)
                  * allocated crtc, we create a new crtc for it
                  */
                 if (!channel_used(dev, channel)) {
-                        ret = omap_modeset_create_crtc(dev, id, channel);
+                        ret = omap_modeset_create_crtc(dev, id, channel,
+                                possible_crtcs);
                         if (ret < 0) {
                                 dev_err(dev->dev,
                                         "could not create CRTC (channel %u)\n",
@@ -418,7 +423,8 @@ static int omap_modeset_init(struct drm_device *dev)
                         return -ENOMEM;
                 }
 
-                ret = omap_modeset_create_crtc(dev, id, i);
+                ret = omap_modeset_create_crtc(dev, id, i,
+                        possible_crtcs);
                 if (ret < 0) {
                         dev_err(dev->dev,
                                 "could not create CRTC (channel %u)\n", i);
@@ -432,7 +438,8 @@ static int omap_modeset_init(struct drm_device *dev)
         for (; id < num_ovls; id++) {
                 struct drm_plane *plane;
 
-                plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY);
+                plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY,
+                        possible_crtcs);
                 if (IS_ERR(plane))
                         return PTR_ERR(plane);
 
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h
index 4c51135eb9a6..7d9dd5400cef 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.h
+++ b/drivers/gpu/drm/omapdrm/omap_drv.h
@@ -157,7 +157,8 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 int omap_crtc_wait_pending(struct drm_crtc *crtc);
 
 struct drm_plane *omap_plane_init(struct drm_device *dev,
-                int id, enum drm_plane_type type);
+                int id, enum drm_plane_type type,
+                u32 possible_crtcs);
 void omap_plane_install_properties(struct drm_plane *plane,
                 struct drm_mode_object *obj);
 
diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index 9c43cb481e62..82b2c23d6769 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -356,9 +356,9 @@ static const uint32_t error_irqs[] = {
 
 /* initialize plane */
 struct drm_plane *omap_plane_init(struct drm_device *dev,
-                int id, enum drm_plane_type type)
+                int id, enum drm_plane_type type,
+                u32 possible_crtcs)
 {
-        struct omap_drm_private *priv = dev->dev_private;
         struct drm_plane *plane;
         struct omap_plane *omap_plane;
         int ret;
@@ -381,7 +381,7 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
         omap_plane->error_irq.irq = omap_plane_error_irq;
         omap_irq_register(dev, &omap_plane->error_irq);
 
-        ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
+        ret = drm_universal_plane_init(dev, plane, possible_crtcs,
                                        &omap_plane_funcs, omap_plane->formats,
                                        omap_plane->nformats, type, NULL);
         if (ret < 0)