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From 7ca1ee604c2269389ee00990dd8f7c375df3be06 Mon Sep 17 00:00:00 2001
From: Chris Morgan <macromorgan@hotmail.com>
Date: Fri, 28 Jan 2022 17:39:54 -0600
Subject: [PATCH] drm/vc4: dpi: Support DPI interface in mode3 for
RGB565
Add support for the VC4 DPI driver to utilize DPI mode 3. This is
defined here as xxxRRRRRxxGGGGGGxxxBBBBB:
https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#parallel-display-interface-dpi
This mode is required to use the Geekworm MZP280 DPI display.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/gpu/drm/vc4/vc4_dpi.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -189,6 +189,10 @@ static void vc4_dpi_encoder_enable(struc
dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_1,
DPI_FORMAT);
break;
+ case MEDIA_BUS_FMT_RGB565_1X24_CPADHI:
+ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_2,
+ DPI_FORMAT);
+ break;
}
} else {
/* Default to 18bit if no connector found. */
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