From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Fri, 3 Jun 2016 13:29:59 +0300
Subject: drm/omap: fix WBDELAYCOUNT for HDMI
Git-commit: 46a930418544a5c28abec8dc3e0899d53381814a
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
For HDMI, WBDELAYCOUNT starts counting at the start of vsync, not at the
start of vfp.
This patch adjusts the wbdelay for HDMI accordingly.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/omapdrm/dss/dispc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/omapdrm/dss/dispc.c
+++ b/drivers/gpu/drm/omapdrm/dss/dispc.c
@@ -2816,8 +2816,12 @@ int dispc_wb_setup(struct dispc_device *
} else {
int wbdelay;
- wbdelay = min(vm->vfront_porch +
- vm->vsync_len + vm->vback_porch, (u32)255);
+ if (channel_in == DSS_WB_TV_MGR)
+ wbdelay = min(vm->vsync_len + vm->vback_porch,
+ (u32)255);
+ else
+ wbdelay = min(vm->vfront_porch +
+ vm->vsync_len + vm->vback_porch, (u32)255);
/* WBDELAYCOUNT */
REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0);