[PATCH] drm/msm: reduce usage of round_pixclk callback

[PATCH] drm/msm: reduce usage of round_pixclk callback

[Dmitry Baryshkov]

The round_pixclk() callback returns different rate only on MDP4 in HDMI
(DTV) case. Stop using this callback in other cases to simplify
mode_valid callbacks.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c   |  7 -------
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c  |  7 -------
 drivers/gpu/drm/msm/dsi/dsi_manager.c     | 22 ----------------------
 drivers/gpu/drm/msm/edp/edp_connector.c   | 11 -----------
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c |  9 +++++----
 5 files changed, 5 insertions(+), 51 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 1d3a4f395e74..5bf66d885af3 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -659,12 +659,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 	return ret;
 }
 
-static long dpu_kms_round_pixclk(struct msm_kms *kms, unsigned long rate,
-		struct drm_encoder *encoder)
-{
-	return rate;
-}
-
 static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
 {
 	int i;
@@ -861,7 +855,6 @@ static const struct msm_kms_funcs kms_funcs = {
 	.disable_vblank  = dpu_kms_disable_vblank,
 	.check_modified_format = dpu_format_check_modified_format,
 	.get_format      = dpu_get_msm_format,
-	.round_pixclk    = dpu_kms_round_pixclk,
 	.destroy         = dpu_kms_destroy,
 	.set_encoder_mode = _dpu_kms_set_encoder_mode,
 	.snapshot        = dpu_kms_mdp_snapshot,
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index 15aed45022bc..40831f091c29 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -190,12 +190,6 @@ static void mdp5_complete_commit(struct msm_kms *kms, unsigned crtc_mask)
 		mdp5_smp_complete_commit(mdp5_kms->smp, &global_state->smp);
 }
 
-static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate,
-		struct drm_encoder *encoder)
-{
-	return rate;
-}
-
 static int mdp5_set_split_display(struct msm_kms *kms,
 		struct drm_encoder *encoder,
 		struct drm_encoder *slave_encoder,
@@ -285,7 +279,6 @@ static const struct mdp_kms_funcs kms_funcs = {
 		.wait_flush      = mdp5_wait_flush,
 		.complete_commit = mdp5_complete_commit,
 		.get_format      = mdp_get_format,
-		.round_pixclk    = mdp5_round_pixclk,
 		.set_split_display = mdp5_set_split_display,
 		.set_encoder_mode = mdp5_set_encoder_mode,
 		.destroy         = mdp5_kms_destroy,
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 4ebfedc4a9ac..e9fa96ca9fa5 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -327,27 +327,6 @@ static int dsi_mgr_connector_get_modes(struct drm_connector *connector)
 	return num;
 }
 
-static enum drm_mode_status dsi_mgr_connector_mode_valid(struct drm_connector *connector,
-				struct drm_display_mode *mode)
-{
-	int id = dsi_mgr_connector_get_id(connector);
-	struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
-	struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi);
-	struct msm_drm_private *priv = connector->dev->dev_private;
-	struct msm_kms *kms = priv->kms;
-	long actual, requested;
-
-	DBG("");
-	requested = 1000 * mode->clock;
-	actual = kms->funcs->round_pixclk(kms, requested, encoder);
-
-	DBG("requested=%ld, actual=%ld", requested, actual);
-	if (actual != requested)
-		return MODE_CLOCK_RANGE;
-
-	return MODE_OK;
-}
-
 static struct drm_encoder *
 dsi_mgr_connector_best_encoder(struct drm_connector *connector)
 {
@@ -579,7 +558,6 @@ static const struct drm_connector_funcs dsi_mgr_connector_funcs = {
 
 static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = {
 	.get_modes = dsi_mgr_connector_get_modes,
-	.mode_valid = dsi_mgr_connector_mode_valid,
 	.best_encoder = dsi_mgr_connector_best_encoder,
 };
 
diff --git a/drivers/gpu/drm/msm/edp/edp_connector.c b/drivers/gpu/drm/msm/edp/edp_connector.c
index 73cb5fd97a5a..1dc6c7333c5a 100644
--- a/drivers/gpu/drm/msm/edp/edp_connector.c
+++ b/drivers/gpu/drm/msm/edp/edp_connector.c
@@ -60,17 +60,6 @@ static int edp_connector_mode_valid(struct drm_connector *connector,
 {
 	struct edp_connector *edp_connector = to_edp_connector(connector);
 	struct msm_edp *edp = edp_connector->edp;
-	struct msm_drm_private *priv = connector->dev->dev_private;
-	struct msm_kms *kms = priv->kms;
-	long actual, requested;
-
-	requested = 1000 * mode->clock;
-	actual = kms->funcs->round_pixclk(kms,
-			requested, edp_connector->edp->encoder);
-
-	DBG("requested=%ld, actual=%ld", requested, actual);
-	if (actual != requested)
-		return MODE_CLOCK_RANGE;
 
 	if (!msm_edp_ctrl_pixel_clock_valid(
 		edp->ctrl, mode->clock, NULL, NULL))
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index 58707a1f3878..94318d8ef303 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -386,15 +386,16 @@ static int msm_hdmi_connector_mode_valid(struct drm_connector *connector,
 	long actual, requested;
 
 	requested = 1000 * mode->clock;
-	actual = kms->funcs->round_pixclk(kms,
-			requested, hdmi_connector->hdmi->encoder);
 
+	if (kms->funcs->round_pixclk)
+		actual = kms->funcs->round_pixclk(kms,
+			requested, hdmi_connector->hdmi->encoder);
+	else if (config->pwr_clk_cnt > 0)
 	/* for mdp5/apq8074, we manage our own pixel clk (as opposed to
 	 * mdp4/dtv stuff where pixel clk is assigned to mdp/encoder
 	 * instead):
 	 */
-	if (config->pwr_clk_cnt > 0)
-		actual = clk_round_rate(hdmi->pwr_clks[0], actual);
+		actual = clk_round_rate(hdmi->pwr_clks[0], requested);
 
 	DBG("requested=%ld, actual=%ld", requested, actual);
 
-- 
2.30.2