linux-kernel - [PATCH] drm/panel: jdi-fhd-r63452: make use of prepare_prev

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Message-Id: <20240423-jdi-fix-v1-1-808970662b40@gmail.com>
Date: Tue, 23 Apr 2024 22:54:33 +0200
From: Barnabás Czémán <trabarni@...il.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 y.oudjana@...tonmail.com, 
 Barnabás Czémán <trabarni@...il.com>
Subject: [PATCH] drm/panel: jdi-fhd-r63452: make use of prepare_prev_first

The DSI host must be enabled for the panel to be initialized in
prepare(). Set the prepare_prev_first flag to guarantee this.

Signed-off-by: Barnabás Czémán <trabarni@...il.com>
---
 drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
index 3e0a8e0d58a0..483dc88d16d8 100644
--- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
+++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
@@ -247,6 +247,7 @@ static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
 
 	drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
+	ctx->panel.prepare_prev_first = true;
 
 	ret = drm_panel_of_backlight(&ctx->panel);
 	if (ret)

---
base-commit: a59668a9397e7245b26e9be85d23f242ff757ae8
change-id: 20240423-jdi-fix-986a796a3101

Best regards,
-- 
Barnabás Czémán <trabarni@...il.com>