[Intel-gfx] [PATCH 5/7] drm/i915/skl+: Use scaling amount for plane data rate calculation

[Shobhit Kumar]

From: "Kumar, Mahesh" <mahesh1.kumar at intel.com>

Signed-off-by: Kumar, Mahesh <mahesh1.kumar at intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index ffcc56a..dc08494 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2978,6 +2978,8 @@ skl_plane_relative_data_rate(const struct intel_crtc_state *cstate,
 	struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc);
 	struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate);
 	struct drm_framebuffer *fb = pstate->fb;
+	struct intel_plane *intel_plane = to_intel_plane(pstate->plane);
+	uint32_t down_scale_amount, data_rate;
 	uint32_t width = 0, height = 0;
 
 	if (drm_rect_width(&intel_pstate->src)) {
@@ -2994,15 +2996,19 @@ skl_plane_relative_data_rate(const struct intel_crtc_state *cstate,
 	/* for planar format */
 	if (fb->pixel_format == DRM_FORMAT_NV12) {
 		if (y)  /* y-plane data rate */
-			return width * height *
+			data_rate = width * height *
 				drm_format_plane_cpp(fb->pixel_format, 0);
 		else    /* uv-plane data rate */
-			return (width / 2) * (height / 2) *
+			data_rate = (width / 2) * (height / 2) *
 				drm_format_plane_cpp(fb->pixel_format, 1);
 	}
 
 	/* for packed formats */
-	return width * height * drm_format_plane_cpp(fb->pixel_format, 0);
+	data_rate = width * height * drm_format_plane_cpp(fb->pixel_format, 0);
+	down_scale_amount = skl_plane_downscale_amount(intel_plane);
+
+	return DIV_ROUND_UP((data_rate * down_scale_amount), 1000);
+
 }
 
 /*
-- 
2.4.3