[PATCH v6 3/4] drm/bridge: analogix_dp: add helpers for capture of frame CRCs

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>,
	"Archit Taneja" <architt@codeaurora.org>,
	"David Airlie" <airlied@linux.ie>,
	dri-devel@lists.freedesktop.org
Subject: [PATCH v6 3/4] drm/bridge: analogix_dp: add helpers for capture of frame CRCs
Date: Fri,  3 Mar 2017 14:39:35 +0100	[thread overview]
Message-ID: <20170303133936.14964-4-tomeu.vizoso@collabora.com> (raw)
In-Reply-To: <20170303133936.14964-1-tomeu.vizoso@collabora.com>

Add two simple functions that just take the drm_dp_aux from our struct
and calls the corresponding DP helpers with it.

v6: Pass to the DP helper the drm_crtc of the current connector (Sean Paul)

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

 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 22 ++++++++++++++++++++++
 include/drm/bridge/analogix_dp.h                   |  3 +++
 2 files changed, 25 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index e7cd1056ff2d..c26997afd3cf 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1488,6 +1488,28 @@ int analogix_dp_resume(struct device *dev)
 EXPORT_SYMBOL_GPL(analogix_dp_resume);
 #endif
 
+int analogix_dp_start_crc(struct drm_connector *connector)
+{
+	struct analogix_dp_device *dp = to_dp(connector);
+
+	if (!connector->state->crtc) {
+		DRM_ERROR("Connector %s doesn't currently have a CRTC.\n",
+			  connector->name);
+		return -EINVAL;
+	}
+
+	return drm_dp_start_crc(&dp->aux, connector->state->crtc);
+}
+EXPORT_SYMBOL_GPL(analogix_dp_start_crc);
+
+int analogix_dp_stop_crc(struct drm_connector *connector)
+{
+	struct analogix_dp_device *dp = to_dp(connector);
+
+	return drm_dp_stop_crc(&dp->aux);
+}
+EXPORT_SYMBOL_GPL(analogix_dp_stop_crc);
+
 MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
 MODULE_DESCRIPTION("Analogix DP Core Driver");
 MODULE_LICENSE("GPL v2");
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index f6f0c062205c..c99d6eaef1ac 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -49,4 +49,7 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 		     struct analogix_dp_plat_data *plat_data);
 void analogix_dp_unbind(struct device *dev, struct device *master, void *data);
 
+int analogix_dp_start_crc(struct drm_connector *connector);
+int analogix_dp_stop_crc(struct drm_connector *connector);
+
 #endif /* _ANALOGIX_DP_H_ */
-- 
2.9.3
