disp: msm: sde: correct line time to include compression ratio

Current computation of line time does not include compression ratio
from either DSC or VDC. This change stores source bpp and target bpp in
sde_crtc during sde encoder mode set to be used while calculating line
time.

Change-Id: Ib1e045dce17fcf006447d4562b402cc3f214ed8c
Signed-off-by: Samantha Tran <samtran@codeaurora.org>

msm/sde/sde_crtc.h

@@ -255,6 +255,8 @@ struct sde_crtc_misr_info {
  * @ltm_buffer_lock : muttx to protect ltm_buffers allcation and free
  * @ltm_lock        : Spinlock to protect ltm buffer_cnt, hist_en and ltm lists
  * @needs_hw_reset  : Initiate a hw ctl reset
+ * @src_bpp         : source bpp used to calculate compression ratio
+ * @target_bpp      : target bpp used to calculate compression ratio
  */
 struct sde_crtc {
 	struct drm_crtc base;
@@ -337,6 +339,9 @@ struct sde_crtc {
 	struct mutex ltm_buffer_lock;
 	spinlock_t ltm_lock;
 	bool needs_hw_reset;
+
+	int src_bpp;
+	int target_bpp;
 };
 
 #define to_sde_crtc(x) container_of(x, struct sde_crtc, base)
@@ -830,4 +835,17 @@ void sde_crtc_misr_setup(struct drm_crtc *crtc, bool enable, u32 frame_count);
 void sde_crtc_get_misr_info(struct drm_crtc *crtc,
 		struct sde_crtc_misr_info *crtc_misr_info);
 
+/**
+ * sde_crtc_set_bpp - set src and target bpp values
+ * @sde_crtc: Pointer to sde crtc struct
+ * @src_bpp: source bpp value to be stored
+ * @target_bpp: target value to be stored
+ */
+static inline void sde_crtc_set_bpp(struct sde_crtc *sde_crtc, int src_bpp,
+		int target_bpp)
+{
+	sde_crtc->src_bpp = src_bpp;
+	sde_crtc->target_bpp = target_bpp;
+}
+
 #endif /* _SDE_CRTC_H_ */