[PATCH 2/9] drm/i915: Add crtc->plane_ids_mask

ville.syrjala
2016-11-22T16:02:14Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Add a mask of which planes are available for each pipe. This doesn't
quite work for old platforms with dynamic plane<->pipe assignment, but
as we don't support that sort of stuff (yet) we can get away with it.

The main use I have for this is the for_each_plane_id_on_crtc() macro
for iterating over all possible planes on the crtc. I suppose we could
not add the mask, and instead iterate by comparing intel_plane->pipe
but then we'd need a local intel_plane variable which is just
unnecessary clutter in some cases. But I'm not hung up on this, so if
people prefer the other option I could be convinced to use it.

v2: Use BIT() in the iterator macro too (Paulo)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 4 ++++
drivers/gpu/drm/i915/intel_display.c | 3 +++
drivers/gpu/drm/i915/intel_drv.h | 3 ++-
3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6c9864287b29..90bd31d71a81 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -210,6 +210,10 @@ enum plane_id {
I915_MAX_PLANES,
};

+#define for_each_plane_id_on_crtc(__crtc, __p) \
+ for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
+ for_each_if ((__crtc)->plane_ids_mask & BIT(__p))
+
enum port {
PORT_NONE = -1,
PORT_A = 0,
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index dfd3dbe6a92a..6c3032f04d54 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15277,6 +15277,7 @@ static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
ret = PTR_ERR(primary);
goto fail;
}
+ intel_crtc->plane_ids_mask |= BIT(primary->id);

for_each_sprite(dev_priv, pipe, sprite) {
struct intel_plane *plane;
@@ -15286,6 +15287,7 @@ static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
ret = PTR_ERR(plane);
goto fail;
}
+ intel_crtc->plane_ids_mask |= BIT(plane->id);
}

cursor = intel_cursor_plane_create(dev_priv, pipe);
@@ -15293,6 +15295,7 @@ static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
ret = PTR_ERR(cursor);
goto fail;
}
+ intel_crtc->plane_ids_mask |= BIT(cursor->id);

ret = drm_crtc_init_with_planes(&dev_priv->drm, &intel_crtc->base,
&primary->base, &cursor->base,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b2a0409330a9..c1b245853ba9 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -691,8 +691,9 @@ struct intel_crtc {
* some outputs connected to this crtc.
*/
bool active;
- unsigned long enabled_power_domains;
bool lowfreq_avail;
+ u8 plane_ids_mask;
+ unsigned long enabled_power_domains;
struct intel_overlay *overlay;
struct intel_flip_work *flip_work;

--
2.7.4