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

From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
To: linux-kernel@vger.kernel.org
Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>,
	"Sean Paul" <seanpaul@chromium.org>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	intel-gfx-trybot@lists.freedesktop.org,
	"Emil Velikov" <emil.l.velikov@gmail.com>,
	"Daniel Vetter" <daniel.vetter@intel.com>,
	"Benjamin Gaignard" <benjamin.gaignard@linaro.org>,
	"Tomeu Vizoso" <tomeu.vizoso@collabora.com>,
	"Jani Nikula" <jani.nikula@linux.intel.com>,
	dri-devel@lists.freedesktop.org,
	"David Airlie" <airlied@linux.ie>
Subject: [PATCH v6 1/4] drm/dp: add crtc backpointer to drm_dp_aux
Date: Fri,  3 Mar 2017 14:39:33 +0100	[thread overview]
Message-ID: <20170303133936.14964-2-tomeu.vizoso@collabora.com> (raw)
In-Reply-To: <20170303133936.14964-1-tomeu.vizoso@collabora.com>

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(+)

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);
-- 
2.9.3
