drm/msm/dp: handle PHY directly in dp_ctrl

There is little point in going trough dp_parser->io indirection each
time the driver needs to access the PHY. Store the pointer directly in
dp_ctrl_private.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Tested-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/576119/
Link: https://lore.kernel.org/r/20240126-dp-power-parser-cleanup-v3-11-098d5f581dd3@linaro.org

drivers/gpu/drm/msm/dp/dp_ctrl.c

@@ -76,9 +76,10 @@ struct dp_ctrl_private {
 	struct drm_dp_aux *aux;
 	struct dp_panel *panel;
 	struct dp_link *link;
-	struct dp_parser *parser;
 	struct dp_catalog *catalog;
 
+	struct phy *phy;
+
 	unsigned int num_core_clks;
 	struct clk_bulk_data *core_clks;
 
@@ -1023,7 +1024,7 @@ static int dp_ctrl_set_vx_px(struct dp_ctrl_private *ctrl,
 	phy_opts->dp.voltage[0] = v_level;
 	phy_opts->dp.pre[0] = p_level;
 	phy_opts->dp.set_voltages = 1;
-	phy_configure(ctrl->parser->io.phy, phy_opts);
+	phy_configure(ctrl->phy, phy_opts);
 	phy_opts->dp.set_voltages = 0;
 
 	return 0;
@@ -1437,7 +1438,7 @@ static void dp_ctrl_link_clk_disable(struct dp_ctrl *dp_ctrl)
 static int dp_ctrl_enable_mainlink_clocks(struct dp_ctrl_private *ctrl)
 {
 	int ret = 0;
-	struct phy *phy = ctrl->parser->io.phy;
+	struct phy *phy = ctrl->phy;
 	const u8 *dpcd = ctrl->panel->dpcd;
 
 	ctrl->phy_opts.dp.lanes = ctrl->link->link_params.num_lanes;
@@ -1535,12 +1536,10 @@ void dp_ctrl_set_psr(struct dp_ctrl *dp_ctrl, bool enter)
 void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl)
 {
 	struct dp_ctrl_private *ctrl;
-	struct dp_io *dp_io;
 	struct phy *phy;
 
 	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-	dp_io = &ctrl->parser->io;
-	phy = dp_io->phy;
+	phy = ctrl->phy;
 
 	dp_catalog_ctrl_phy_reset(ctrl->catalog);
 	phy_init(phy);
@@ -1552,12 +1551,10 @@ void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl)
 void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
 {
 	struct dp_ctrl_private *ctrl;
-	struct dp_io *dp_io;
 	struct phy *phy;
 
 	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-	dp_io = &ctrl->parser->io;
-	phy = dp_io->phy;
+	phy = ctrl->phy;
 
 	dp_catalog_ctrl_phy_reset(ctrl->catalog);
 	phy_exit(phy);
@@ -1582,7 +1579,7 @@ static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
 
 static int dp_ctrl_reinitialize_mainlink(struct dp_ctrl_private *ctrl)
 {
-	struct phy *phy = ctrl->parser->io.phy;
+	struct phy *phy = ctrl->phy;
 	int ret = 0;
 
 	dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false);
@@ -1612,11 +1609,9 @@ static int dp_ctrl_reinitialize_mainlink(struct dp_ctrl_private *ctrl)
 
 static int dp_ctrl_deinitialize_mainlink(struct dp_ctrl_private *ctrl)
 {
-	struct dp_io *dp_io;
 	struct phy *phy;
 
-	dp_io = &ctrl->parser->io;
-	phy = dp_io->phy;
+	phy = ctrl->phy;
 
 	dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false);
 
@@ -2042,12 +2037,10 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train)
 void dp_ctrl_off_link_stream(struct dp_ctrl *dp_ctrl)
 {
 	struct dp_ctrl_private *ctrl;
-	struct dp_io *dp_io;
 	struct phy *phy;
 
 	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-	dp_io = &ctrl->parser->io;
-	phy = dp_io->phy;
+	phy = ctrl->phy;
 
 	/* set dongle to D3 (power off) mode */
 	dp_link_psm_config(ctrl->link, &ctrl->panel->link_info, true);
@@ -2075,12 +2068,10 @@ void dp_ctrl_off_link_stream(struct dp_ctrl *dp_ctrl)
 void dp_ctrl_off_link(struct dp_ctrl *dp_ctrl)
 {
 	struct dp_ctrl_private *ctrl;
-	struct dp_io *dp_io;
 	struct phy *phy;
 
 	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-	dp_io = &ctrl->parser->io;
-	phy = dp_io->phy;
+	phy = ctrl->phy;
 
 	dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false);
 
@@ -2098,12 +2089,10 @@ void dp_ctrl_off_link(struct dp_ctrl *dp_ctrl)
 void dp_ctrl_off(struct dp_ctrl *dp_ctrl)
 {
 	struct dp_ctrl_private *ctrl;
-	struct dp_io *dp_io;
 	struct phy *phy;
 
 	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-	dp_io = &ctrl->parser->io;
-	phy = dp_io->phy;
+	phy = ctrl->phy;
 
 	dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false);
 
@@ -2220,7 +2209,7 @@ static int dp_ctrl_clk_init(struct dp_ctrl *dp_ctrl)
 struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
 			struct dp_panel *panel,	struct drm_dp_aux *aux,
 			struct dp_catalog *catalog,
-			struct dp_parser *parser)
+			struct phy *phy)
 {
 	struct dp_ctrl_private *ctrl;
 	int ret;
@@ -2254,12 +2243,12 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
 	init_completion(&ctrl->video_comp);
 
 	/* in parameters */
-	ctrl->parser   = parser;
 	ctrl->panel    = panel;
 	ctrl->aux      = aux;
 	ctrl->link     = link;
 	ctrl->catalog  = catalog;
 	ctrl->dev      = dev;
+	ctrl->phy      = phy;
 
 	ret = dp_ctrl_clk_init(&ctrl->dp_ctrl);
 	if (ret) {

drivers/gpu/drm/msm/dp/dp_ctrl.h

@@ -28,7 +28,7 @@ void dp_ctrl_handle_sink_request(struct dp_ctrl *dp_ctrl);
 struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
 			struct dp_panel *panel,	struct drm_dp_aux *aux,
 			struct dp_catalog *catalog,
-			struct dp_parser *parser);
+			struct phy *phy);
 
 void dp_ctrl_reset_irq_ctrl(struct dp_ctrl *dp_ctrl, bool enable);
 void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl);

drivers/gpu/drm/msm/dp/dp_display.c

@@ -761,7 +761,8 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 	}
 
 	dp->ctrl = dp_ctrl_get(dev, dp->link, dp->panel, dp->aux,
-			       dp->catalog, dp->parser);
+			       dp->catalog,
+			       dp->parser->io.phy);
 	if (IS_ERR(dp->ctrl)) {
 		rc = PTR_ERR(dp->ctrl);
 		DRM_ERROR("failed to initialize ctrl, rc = %d\n", rc);