linux-kernel - [PATCH 1/3] drm/msm/dp: Reorganize code to avoid forward declaration

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Date:   Fri, 17 Jun 2022 13:47:48 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        Sean Paul <sean@...rly.run>, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org,
        Kuogee Hsieh <quic_khsieh@...cinc.com>
Subject: [PATCH 1/3] drm/msm/dp: Reorganize code to avoid forward declaration

Let's move these functions around to avoid having to forward declare
dp_ctrl_on_stream_phy_test_report(). Also remove
dp_ctrl_reinitialize_mainlink() forward declaration because we're doing
that sort of task.

Cc: Kuogee Hsieh <quic_khsieh@...cinc.com>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/gpu/drm/msm/dp/dp_ctrl.c | 104 +++++++++++++++----------------
 1 file changed, 50 insertions(+), 54 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 703249384e7c..bd445e683cfc 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1238,8 +1238,6 @@ static int dp_ctrl_link_train_2(struct dp_ctrl_private *ctrl,
 	return -ETIMEDOUT;
 }
 
-static int dp_ctrl_reinitialize_mainlink(struct dp_ctrl_private *ctrl);
-
 static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl,
 			int *training_step)
 {
@@ -1534,38 +1532,6 @@ static int dp_ctrl_link_maintenance(struct dp_ctrl_private *ctrl)
 	return ret;
 }
 
-static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl);
-
-static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl)
-{
-	int ret = 0;
-
-	if (!ctrl->link->phy_params.phy_test_pattern_sel) {
-		drm_dbg_dp(ctrl->drm_dev,
-			"no test pattern selected by sink\n");
-		return ret;
-	}
-
-	/*
-	 * The global reset will need DP link related clocks to be
-	 * running. Add the global reset just before disabling the
-	 * link clocks and core clocks.
-	 */
-	ret = dp_ctrl_off(&ctrl->dp_ctrl);
-	if (ret) {
-		DRM_ERROR("failed to disable DP controller\n");
-		return ret;
-	}
-
-	ret = dp_ctrl_on_link(&ctrl->dp_ctrl);
-	if (!ret)
-		ret = dp_ctrl_on_stream_phy_test_report(&ctrl->dp_ctrl);
-	else
-		DRM_ERROR("failed to enable DP link controller\n");
-
-	return ret;
-}
-
 static bool dp_ctrl_send_phy_test_pattern(struct dp_ctrl_private *ctrl)
 {
 	bool success = false;
@@ -1618,6 +1584,56 @@ static bool dp_ctrl_send_phy_test_pattern(struct dp_ctrl_private *ctrl)
 	return success;
 }
 
+static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl)
+{
+	int ret;
+	struct dp_ctrl_private *ctrl;
+
+	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
+
+	ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock;
+
+	ret = dp_ctrl_enable_stream_clocks(ctrl);
+	if (ret) {
+		DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret);
+		return ret;
+	}
+
+	dp_ctrl_send_phy_test_pattern(ctrl);
+
+	return 0;
+}
+
+static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl)
+{
+	int ret = 0;
+
+	if (!ctrl->link->phy_params.phy_test_pattern_sel) {
+		drm_dbg_dp(ctrl->drm_dev,
+			"no test pattern selected by sink\n");
+		return ret;
+	}
+
+	/*
+	 * The global reset will need DP link related clocks to be
+	 * running. Add the global reset just before disabling the
+	 * link clocks and core clocks.
+	 */
+	ret = dp_ctrl_off(&ctrl->dp_ctrl);
+	if (ret) {
+		DRM_ERROR("failed to disable DP controller\n");
+		return ret;
+	}
+
+	ret = dp_ctrl_on_link(&ctrl->dp_ctrl);
+	if (!ret)
+		ret = dp_ctrl_on_stream_phy_test_report(&ctrl->dp_ctrl);
+	else
+		DRM_ERROR("failed to enable DP link controller\n");
+
+	return ret;
+}
+
 void dp_ctrl_handle_sink_request(struct dp_ctrl *dp_ctrl)
 {
 	struct dp_ctrl_private *ctrl;
@@ -1815,26 +1831,6 @@ static int dp_ctrl_link_retrain(struct dp_ctrl_private *ctrl)
 	return dp_ctrl_setup_main_link(ctrl, &training_step);
 }
 
-static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl)
-{
-	int ret;
-	struct dp_ctrl_private *ctrl;
-
-	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-
-	ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock;
-
-	ret = dp_ctrl_enable_stream_clocks(ctrl);
-	if (ret) {
-		DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret);
-		return ret;
-	}
-
-	dp_ctrl_send_phy_test_pattern(ctrl);
-
-	return 0;
-}
-
 int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train)
 {
 	int ret = 0;
-- 
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