[PATCH v4 07/19] drm/msm/dp: store mode YUV420 information to be used by rest of DP

[Paloma Arellano]

Wide bus is not supported when the mode is YUV420 in DP. In preparation
for changing the DPU programming to reflect this, the value and
assignment location of wide_bus_en for the DP submodules must be
changed. Move it from boot time in dp_init_sub_modules() to run time in
dp_display_mode_set.

Signed-off-by: Paloma Arellano <quic_parellan at quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 17 +++++++++++++----
 drivers/gpu/drm/msm/dp/dp_panel.h   |  1 +
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 792191f67717f..1a84f68e2b59a 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -785,10 +785,6 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_ctrl;
 	}
 
-	/* populate wide_bus_supported to different layers */
-	dp->ctrl->wide_bus_en = dp->wide_bus_supported;
-	dp->catalog->wide_bus_en = dp->wide_bus_supported;
-
 	return rc;
 
 error_ctrl:
@@ -809,6 +805,7 @@ static int dp_display_set_mode(struct msm_dp *dp_display,
 	drm_mode_copy(&dp->panel->dp_mode.drm_mode, &mode->drm_mode);
 	dp->panel->dp_mode.bpp = mode->bpp;
 	dp->panel->dp_mode.capabilities = mode->capabilities;
+	dp->panel->dp_mode.out_fmt_is_yuv_420 = mode->out_fmt_is_yuv_420;
 	dp_panel_init_panel_info(dp->panel);
 	return 0;
 }
@@ -1403,6 +1400,9 @@ bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
 
 	dp = container_of(dp_display, struct dp_display_private, dp_display);
 
+	if (dp->dp_mode.out_fmt_is_yuv_420)
+		return false;
+
 	return dp->wide_bus_supported;
 }
 
@@ -1616,6 +1616,15 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
 
 	dp_display->dp_mode.h_active_low =
 		!!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);
+
+	dp_display->dp_mode.out_fmt_is_yuv_420 =
+		drm_mode_is_420_only(&dp->connector->display_info, adjusted_mode);
+
+	/* populate wide_bus_support to different layers */
+	dp_display->ctrl->wide_bus_en =
+		dp_display->dp_mode.out_fmt_is_yuv_420 ? false : dp_display->wide_bus_supported;
+	dp_display->catalog->wide_bus_en =
+		dp_display->dp_mode.out_fmt_is_yuv_420 ? false : dp_display->wide_bus_supported;
 }
 
 void dp_bridge_hpd_enable(struct drm_bridge *bridge)
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h b/drivers/gpu/drm/msm/dp/dp_panel.h
index a0dfc579c5f9f..6ec68be9f2366 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.h
+++ b/drivers/gpu/drm/msm/dp/dp_panel.h
@@ -19,6 +19,7 @@ struct dp_display_mode {
 	u32 bpp;
 	u32 h_active_low;
 	u32 v_active_low;
+	bool out_fmt_is_yuv_420;
 };
 
 struct dp_panel_in {
-- 
2.39.2