linux-kernel - [PATCH v2] drm/panel: visionox-vtdr6130: Set prepare_prev

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Date: Thu, 1 Feb 2024 16:10:15 -0800
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: <quic_abhinavk@...cinc.com>
CC: Jessica Zhang <quic_jesszhan@...cinc.com>,
        Neil Armstrong
	<neil.armstrong@...aro.org>,
        Sam Ravnborg <sam@...nborg.org>, David Airlie
	<airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, <quic_parellan@...cinc.com>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] drm/panel: visionox-vtdr6130: Set prepare_prev_first
 flag

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: Jessica Zhang <quic_jesszhan@...cinc.com>
---
To: Neil Armstrong <neil.armstrong@...aro.org>
To: Sam Ravnborg <sam@...nborg.org>
To: David Airlie <airlied@...il.com>
To: Daniel Vetter <daniel@...ll.ch>
To: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To: Maxime Ripard <mripard@...nel.org>
To: Thomas Zimmermann <tzimmermann@...e.de>
Cc: quic_abhinavk@...cinc.com
Cc: quic_parellan@...cinc.com
Cc: dri-devel@...ts.freedesktop.org
Cc: linux-kernel@...r.kernel.org

Changes in v2:
- Corrected commit message to mention that DCS on commands are sent during
  prepare() instead of probe()
- Dropped Fixes tag
- Rebased onto tip of linux-next
- Link to v1: https://lore.kernel.org/r/20230725-visionox-vtdr-prev-first-v1-1-3bc44cec7dc6@quicinc.com
---
 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
index a23407b9f6fb6..540099253e1bd 100644
--- a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
+++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
@@ -287,6 +287,7 @@ static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
 			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
+	ctx->panel.prepare_prev_first = true;
 
 	drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);

---
base-commit: 51b70ff55ed88edd19b080a524063446bcc34b62
change-id: 20230717-visionox-vtdr-prev-first-e00ae02eec9f

Best regards,
-- 
Jessica Zhang <quic_jesszhan@...cinc.com>