openwrt/target/linux/bcm27xx/patches-6.6/950-0831-vc4-hdmi-Update-MAI_THR-for-D0.patch

From de6a4aa502318ed5bfbf707b93fb62e786b93bea Mon Sep 17 00:00:00 2001
From: Dom Cobley <popcornmix@gmail.com>
Date: Thu, 16 Nov 2023 14:39:30 +0000
Subject: [PATCH 0831/1085] vc4/hdmi: Update MAI_THR for D0

2712D0 has increased the fifo sizes of MAI_THR blocks,
resulting in adjusted bit offsets. Handle that.

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 8 +++++++-
 drivers/gpu/drm/vc4/vc4_regs.h | 9 +++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -2603,7 +2603,13 @@ static int vc4_hdmi_audio_prepare(struct
 					     VC4_HDMI_AUDIO_PACKET_CEA_MASK);
 
 	/* Set the MAI threshold */
-	if (vc4->gen >= VC4_GEN_5)
+	if (vc4->gen >= VC4_GEN_5 && vc4->step_d0)
+		HDMI_WRITE(HDMI_MAI_THR,
+			VC4_SET_FIELD(0x10, VC4_D0_HD_MAI_THR_PANICHIGH) |
+			VC4_SET_FIELD(0x10, VC4_D0_HD_MAI_THR_PANICLOW) |
+			VC4_SET_FIELD(0x1c, VC4_D0_HD_MAI_THR_DREQHIGH) |
+			VC4_SET_FIELD(0x1c, VC4_D0_HD_MAI_THR_DREQLOW));
+	else if (vc4->gen >= VC4_GEN_5)
 		HDMI_WRITE(HDMI_MAI_THR,
 			VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_PANICHIGH) |
 			VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_PANICLOW) |
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -1039,6 +1039,15 @@ enum {
 # define VC4_HD_MAI_THR_DREQLOW_MASK		VC4_MASK(5, 0)
 # define VC4_HD_MAI_THR_DREQLOW_SHIFT		0
 
+# define VC4_D0_HD_MAI_THR_PANICHIGH_MASK		VC4_MASK(29, 23)
+# define VC4_D0_HD_MAI_THR_PANICHIGH_SHIFT		23
+# define VC4_D0_HD_MAI_THR_PANICLOW_MASK		VC4_MASK(21, 15)
+# define VC4_D0_HD_MAI_THR_PANICLOW_SHIFT		15
+# define VC4_D0_HD_MAI_THR_DREQHIGH_MASK		VC4_MASK(13, 7)
+# define VC4_D0_HD_MAI_THR_DREQHIGH_SHIFT		7
+# define VC4_D0_HD_MAI_THR_DREQLOW_MASK		VC4_MASK(6, 0)
+# define VC4_D0_HD_MAI_THR_DREQLOW_SHIFT		0
+
 /* Divider from HDMI HSM clock to MAI serial clock.  Sampling period
  * converges to N / (M + 1) cycles.
  */