[v6,1/4] drm/dp: add crtc backpointer to drm_dp_aux

Message ID 20170303133936.14964-2-tomeu.vizoso@collabora.com
State New
Headers show
Series
  • drm/dp: Implement CRC debugfs API
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Commit Message

Tomeu Vizoso March 3, 2017, 1:39 p.m.
This backpointer allows DP helpers to access the crtc it's currently
being used for.

v6: Have the backpointer be to drm_crtc (Sean Paul)

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---

 include/drm/drm_dp_helper.h | 2 ++
 1 file changed, 2 insertions(+)

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diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index ba89295c8651..a710e39b5f83 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -789,6 +789,7 @@  struct drm_dp_aux_msg {
  * @name: user-visible name of this AUX channel and the I2C-over-AUX adapter
  * @ddc: I2C adapter that can be used for I2C-over-AUX communication
  * @dev: pointer to struct device that is the parent for this AUX channel
+ * @crtc: backpointer to the crtc that is currently using this AUX channel
  * @hw_mutex: internal mutex used for locking transfers
  * @transfer: transfers a message representing a single AUX transaction
  *
@@ -825,6 +826,7 @@  struct drm_dp_aux {
 	const char *name;
 	struct i2c_adapter ddc;
 	struct device *dev;
+	struct drm_crtc *crtc;
 	struct mutex hw_mutex;
 	ssize_t (*transfer)(struct drm_dp_aux *aux,
 			    struct drm_dp_aux_msg *msg);