linux-kernel - [PATCH 3/3] DRM: ingenic: Add support for panels with 8-bit serial bus

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Message-Id: <20190627182114.27299-3-paul@crapouillou.net>
Date:   Thu, 27 Jun 2019 20:21:14 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>
Cc:     Sam Ravnborg <sam@...nborg.org>, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, od@...c.me,
        Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH 3/3] DRM: ingenic: Add support for panels with 8-bit serial bus

Add support for the LCD panels with a serial 8-bit bus, where the color
components of each 24-bit pixel are sent sequentially.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/gpu/drm/ingenic/ingenic-drm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c
index da966f3dc1f7..ce1fae3a78a9 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm.c
@@ -426,6 +426,9 @@ static void ingenic_drm_encoder_atomic_mode_set(struct drm_encoder *encoder,
 			case MEDIA_BUS_FMT_RGB888_1X24:
 				cfg |= JZ_LCD_CFG_MODE_GENERIC_24BIT;
 				break;
+			case MEDIA_BUS_FMT_RGB888_3X8:
+				cfg |= JZ_LCD_CFG_MODE_8BIT_SERIAL;
+				break;
 			default:
 				break;
 			}
@@ -451,6 +454,7 @@ static int ingenic_drm_encoder_atomic_check(struct drm_encoder *encoder,
 	case MEDIA_BUS_FMT_RGB565_1X16:
 	case MEDIA_BUS_FMT_RGB666_1X18:
 	case MEDIA_BUS_FMT_RGB888_1X24:
+	case MEDIA_BUS_FMT_RGB888_3X8:
 		return 0;
 	default:
 		return -EINVAL;
-- 
2.21.0.593.g511ec345e18