[PATCH 2/2] drm/i915/display/tgl: Bump up the plane/fb height to support 8K

[Manasi Navare <manasi.d.navare@intel.com>]

On TGL+, the plane height for 8K planes can be 4320, so bump it up
To support 4320, we need to increase the number of bits used to
read plane_height to 13 as opposed to older 12 bits.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 21 ++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 0d5c8af01f54..be9a54cb5ecc 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3343,6 +3343,16 @@ static int icl_max_plane_width(const struct drm_framebuffer *fb,
 	return 5120;
 }
 
+static int skl_max_plane_height(void)
+{
+	return 4096;
+}
+
+static int tgl_max_plane_height(void)
+{
+	return 4320;
+}
+
 static bool skl_check_main_ccs_coordinates(struct intel_plane_state *plane_state,
 					   int main_x, int main_y, u32 main_offset)
 {
@@ -3391,9 +3401,13 @@ static int skl_check_main_surface(struct intel_plane_state *plane_state)
 	int w = drm_rect_width(&plane_state->base.src) >> 16;
 	int h = drm_rect_height(&plane_state->base.src) >> 16;
 	int max_width;
-	int max_height = 4096;
+	int max_height;
 	u32 alignment, offset, aux_offset = plane_state->color_plane[1].offset;
 
+	if (INTEL_GEN(dev_priv) >= 12)
+		max_height = tgl_max_plane_height();
+	else
+		max_height = skl_max_plane_height();
 	if (INTEL_GEN(dev_priv) >= 11)
 		max_width = icl_max_plane_width(fb, 0, rotation);
 	else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
@@ -9865,7 +9879,10 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
 	offset = I915_READ(PLANE_OFFSET(pipe, plane_id));
 
 	val = I915_READ(PLANE_SIZE(pipe, plane_id));
-	fb->height = ((val >> 16) & 0xfff) + 1;
+	if (INTEL_GEN(dev_priv) >= 12)
+		fb->height = ((val >> 16) & 0x1fff) + 1;
+	else
+		fb->height = ((val >> 16) & 0xfff) + 1;
 	fb->width = ((val >> 0) & 0x1fff) + 1;
 
 	val = I915_READ(PLANE_STRIDE(pipe, plane_id));
-- 
2.19.1

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