linux-kernel - [PATCH 5/7] drm/vc4: dpi: Support BGR666 formats

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Message-Id: <20221013-rpi-dpi-improvements-v1-5-8a7a96949cb0@cerno.tech>
Date:   Thu, 13 Oct 2022 11:56:49 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Maxime Ripard <mripard@...nel.org>, Eric Anholt <eric@...olt.net>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>, Rob Herring <robh@...nel.org>,
        Emma Anholt <emma@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org,
        Joerg Quinten <aBUGSworstnightmare@...il.com>,
        Chris Morgan <macromorgan@...mail.com>,
        Maxime Ripard <maxime@...no.tech>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        linux-kernel@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: [PATCH 5/7] drm/vc4: dpi: Support BGR666 formats

From: Joerg Quinten <aBUGSworstnightmare@...il.com>

The VC4 DPI output can support multiple BGR666 variants, but they were
never added to the driver. Let's add the the support for those formats.

Signed-off-by: Joerg Quinten <aBUGSworstnightmare@...il.com>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/gpu/drm/vc4/vc4_dpi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index 7da3dd1db50e..ecbe4cd87036 100644
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -170,10 +170,16 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
 				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
 						       DPI_ORDER);
 				break;
+			case MEDIA_BUS_FMT_BGR666_1X24_CPADHI:
+				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+				fallthrough;
 			case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
 				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
 						       DPI_FORMAT);
 				break;
+			case MEDIA_BUS_FMT_BGR666_1X18:
+				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+				fallthrough;
 			case MEDIA_BUS_FMT_RGB666_1X18:
 				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
 						       DPI_FORMAT);

-- 
b4 0.11.0-dev-7da52