From:   Gerald Loacker <gerald.loacker@wolfvision.net>
To:     dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     Thierry Reding <thierry.reding@gmail.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Maxime Ripard <mripard@kernel.org>,
        Michael Riesch <michael.riesch@wolfvision.net>,
        Gerald Loacker <gerald.loacker@wolfvision.net>
Subject: [PATCH 1/7] drm/panel: sitronix-st7789v: propagate RGB666 format
Date:   Tue, 14 Mar 2023 12:56:38 +0100
Message-Id: <20230314115644.3775169-2-gerald.loacker@wolfvision.net>
In-Reply-To: <20230314115644.3775169-1-gerald.loacker@wolfvision.net>
References: <20230314115644.3775169-1-gerald.loacker@wolfvision.net>
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From: Michael Riesch <michael.riesch@wolfvision.net>

The ST7789V display is operated in RGB666 (18-bit) mode. Propagate
this format via the display info.

Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Gerald Loacker <gerald.loacker@wolfvision.net>
---
 drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index bbc4569cbcdc..9535437271d3 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -5,6 +5,7 @@
 
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
+#include <linux/media-bus-format.h>
 #include <linux/module.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
@@ -171,6 +172,7 @@ static int st7789v_get_modes(struct drm_panel *panel,
 			     struct drm_connector *connector)
 {
 	struct drm_display_mode *mode;
+	u32 bus_format = MEDIA_BUS_FMT_RGB666_1X18;
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
@@ -188,6 +190,9 @@ static int st7789v_get_modes(struct drm_panel *panel,
 	connector->display_info.width_mm = 61;
 	connector->display_info.height_mm = 103;
 
+	drm_display_info_set_bus_formats(&connector->display_info, &bus_format,
+					 1);
+
 	return 1;
 }
 
-- 
2.37.2