openwrt/target/linux/bcm27xx/patches-5.15/950-0627-drm-vc4-hdmi-Replace-CSC_CTL-hardcoded-value-by-defi.patch

From 77b0e8ded57e7fb5d742fb533d7a9bb3f3788513 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Wed, 13 Jan 2021 11:20:08 +0100
Subject: [PATCH] drm/vc4: hdmi: Replace CSC_CTL hardcoded value by
 defines

On BCM2711, the HDMI_CSC_CTL register value has been hardcoded to an
opaque value. Let's replace it with properly defined values.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 5 ++---
 drivers/gpu/drm/vc4/vc4_regs.h | 3 +++
 2 files changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -786,9 +786,8 @@ static void vc5_hdmi_csc_setup(struct vc
 			       const struct drm_display_mode *mode)
 {
 	unsigned long flags;
-	u32 csc_ctl;
-
-	csc_ctl = 0x07;	/* RGB_CONVERT_MODE = custom matrix, || USE_RGB_TO_YCBCR */
+	u32 csc_ctl = VC5_MT_CP_CSC_CTL_ENABLE | VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM,
+							       VC5_MT_CP_CSC_CTL_MODE);
 
 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
 
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -804,6 +804,9 @@ enum {
 # define VC4_HD_CSC_CTL_RGB2YCC			BIT(1)
 # define VC4_HD_CSC_CTL_ENABLE			BIT(0)
 
+# define VC5_MT_CP_CSC_CTL_ENABLE		BIT(2)
+# define VC5_MT_CP_CSC_CTL_MODE_MASK		VC4_MASK(1, 0)
+
 # define VC4_DVP_HT_CLOCK_STOP_PIXEL		BIT(1)
 
 /* HVS display list information. */