1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0556-drm-vc4-crtc-Turn-static-const-variable-into-a-defin.patch b/target/linux/bcm27xx/patches-5.4/950-0556-drm-vc4-crtc-Turn-static-const-variable-into-a-defin.patch
new file mode 100644
index 0000000000..3deefc361f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0556-drm-vc4-crtc-Turn-static-const-variable-into-a-defin.patch
@@ -0,0 +1,50 @@
+From c017882242d671cf81256301a3e9a6fc9eefdc13 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 13 Jan 2020 13:39:32 +0100
+Subject: [PATCH] drm/vc4: crtc: Turn static const variable into a
+ define
+
+The hvs_latency_pix variable doesn't need to be a variable and can just be
+defined.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -44,6 +44,8 @@
+ #include "vc4_drv.h"
+ #include "vc4_regs.h"
+ 
++#define HVS_FIFO_LATENCY_PIX	6
++
+ #define CRTC_WRITE(offset, val) writel(val, vc4_crtc->regs + (offset))
+ #define CRTC_READ(offset) readl(vc4_crtc->regs + (offset))
+ 
+@@ -227,21 +229,21 @@ vc4_crtc_update_gamma_lut(struct drm_crt
+ 	vc4_crtc_lut_load(crtc);
+ }
+ 
++
+ static u32 vc4_get_fifo_full_level(u32 format)
+ {
+ 	static const u32 fifo_len_bytes = 64;
+-	static const u32 hvs_latency_pix = 6;
+ 
+ 	switch (format) {
+ 	case PV_CONTROL_FORMAT_DSIV_16:
+ 	case PV_CONTROL_FORMAT_DSIC_16:
+-		return fifo_len_bytes - 2 * hvs_latency_pix;
++		return fifo_len_bytes - 2 * HVS_FIFO_LATENCY_PIX;
+ 	case PV_CONTROL_FORMAT_DSIV_18:
+ 		return fifo_len_bytes - 14;
+ 	case PV_CONTROL_FORMAT_24:
+ 	case PV_CONTROL_FORMAT_DSIV_24:
+ 	default:
+-		return fifo_len_bytes - 3 * hvs_latency_pix;
++		return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
+ 	}
+ }
+