drm/stm: ltdc: add user update info in plane print state

This patch adds the user update information in
frames-per-second into the drm debugfs plane state.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Vincent Abriou <vincent.abriou@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180407213503.30932-1-philippe.cornu@st.com

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/stm/ltdc.h b/drivers/gpu/drm/stm/ltdc.h
index 61a80d00bc3b..1e16d6afb0d2 100644
--- a/drivers/gpu/drm/stm/ltdc.h
+++ b/drivers/gpu/drm/stm/ltdc.h
@@ -20,6 +20,13 @@ struct ltdc_caps {
 	bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */
 };
 
+#define LTDC_MAX_LAYER	4
+
+struct fps_info {
+	unsigned int counter;
+	ktime_t last_timestamp;
+};
+
 struct ltdc_device {
 	void __iomem *regs;
 	struct clk *pixel_clk;	/* lcd pixel clock */
@@ -27,6 +34,7 @@ struct ltdc_device {
 	struct ltdc_caps caps;
 	u32 error_status;
 	u32 irq_status;
+	struct fps_info plane_fpsi[LTDC_MAX_LAYER];
 };
 
 int ltdc_load(struct drm_device *ddev);