drm/msm/dp: Use function arguments for timing configuration

dp_catalog_panel_timing_cfg() takes 4 arguments, which are passed from
the calling function through members of struct dp_catalog.

No state is maintained other than across this call, so switch to
function arguments to clean up the code.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/585351/
Link: https://lore.kernel.org/r/20240328-msm-dp-cleanup-v2-5-a5aed9798d32@quicinc.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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

@@ -881,19 +881,17 @@ u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog)
 }
 
 /* panel related catalog functions */
-int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog)
+int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog, u32 total,
+				u32 sync_start, u32 width_blanking, u32 dp_active)
 {
 	struct dp_catalog_private *catalog = container_of(dp_catalog,
 				struct dp_catalog_private, dp_catalog);
 	u32 reg;
 
-	dp_write_link(catalog, REG_DP_TOTAL_HOR_VER,
-				dp_catalog->total);
-	dp_write_link(catalog, REG_DP_START_HOR_VER_FROM_SYNC,
-				dp_catalog->sync_start);
-	dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY,
-				dp_catalog->width_blanking);
-	dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_catalog->dp_active);
+	dp_write_link(catalog, REG_DP_TOTAL_HOR_VER, total);
+	dp_write_link(catalog, REG_DP_START_HOR_VER_FROM_SYNC, sync_start);
+	dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY, width_blanking);
+	dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_active);
 
 	reg = dp_read_p0(catalog, MMSS_DP_INTF_CONFIG);
 

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

@@ -48,10 +48,6 @@ enum dp_catalog_audio_header_type {
 };
 
 struct dp_catalog {
-	u32 total;
-	u32 sync_start;
-	u32 width_blanking;
-	u32 dp_active;
 	enum dp_catalog_audio_sdp_type sdp_type;
 	enum dp_catalog_audio_header_type sdp_header;
 	u32 audio_data;
@@ -107,7 +103,8 @@ void dp_catalog_ctrl_send_phy_pattern(struct dp_catalog *dp_catalog,
 u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog);
 
 /* DP Panel APIs */
-int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog);
+int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog, u32 total,
+				u32 sync_start, u32 width_blanking, u32 dp_active);
 void dp_catalog_panel_enable_vsc_sdp(struct dp_catalog *dp_catalog, struct dp_sdp *vsc_sdp);
 void dp_catalog_panel_disable_vsc_sdp(struct dp_catalog *dp_catalog);
 void dp_catalog_dump_regs(struct dp_catalog *dp_catalog);

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

@@ -353,6 +353,10 @@ int dp_panel_timing_cfg(struct dp_panel *dp_panel)
 	struct dp_catalog *catalog;
 	struct dp_panel_private *panel;
 	struct drm_display_mode *drm_mode;
+	u32 width_blanking;
+	u32 sync_start;
+	u32 dp_active;
+	u32 total;
 
 	panel = container_of(dp_panel, struct dp_panel_private, dp_panel);
 	catalog = panel->catalog;
@@ -376,13 +380,13 @@ int dp_panel_timing_cfg(struct dp_panel *dp_panel)
 	data <<= 16;
 	data |= total_hor;
 
-	catalog->total = data;
+	total = data;
 
 	data = (drm_mode->vtotal - drm_mode->vsync_start);
 	data <<= 16;
 	data |= (drm_mode->htotal - drm_mode->hsync_start);
 
-	catalog->sync_start = data;
+	sync_start = data;
 
 	data = drm_mode->vsync_end - drm_mode->vsync_start;
 	data <<= 16;
@@ -390,15 +394,15 @@ int dp_panel_timing_cfg(struct dp_panel *dp_panel)
 	data |= drm_mode->hsync_end - drm_mode->hsync_start;
 	data |= (panel->dp_panel.dp_mode.h_active_low << 15);
 
-	catalog->width_blanking = data;
+	width_blanking = data;
 
 	data = drm_mode->vdisplay;
 	data <<= 16;
 	data |= drm_mode->hdisplay;
 
-	catalog->dp_active = data;
+	dp_active = data;
 
-	dp_catalog_panel_timing_cfg(catalog);
+	dp_catalog_panel_timing_cfg(catalog, total, sync_start, width_blanking, dp_active);
 
 	if (dp_panel->dp_mode.out_fmt_is_yuv_420)
 		dp_panel_setup_vsc_sdp_yuv_420(dp_panel);