linux-kernel - [PATCH 4/8] drm/atmel-hlcdc: use drm_crtc

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Message-ID: <20251121-lcd_cleanup_mainline-v1-4-2587e6fe4d67@microchip.com>
Date: Fri, 21 Nov 2025 16:04:36 +0100
From: Ludovic Desroches <ludovic.desroches@...rochip.com>
To: Manikandan Muralidharan <manikandan.m@...rochip.com>, "Dharma
 Balasubiramani" <dharma.b@...rochip.com>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>, Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>, Claudiu Beznea
	<claudiu.beznea@...on.dev>
CC: <dri-devel@...ts.freedesktop.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Ludovic Desroches
	<ludovic.desroches@...rochip.com>
Subject: [PATCH 4/8] drm/atmel-hlcdc: use drm_crtc_mask()

Prefer using the drm_crtc_mask() helper instead of a raw value. It
involves reordering components initialization as we need a valid crtc.

Signed-off-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
Reviewed-by: Manikandan Muralidharan <manikandan.m@...rochip.com>
---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c     | 12 ++++++------
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c |  4 +++-
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index 8ff582a394794aacf84f9e23fd59f123445926a3..d1f5451ebfeaf81c382b49d0c1a6c3c32e44866b 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -723,12 +723,6 @@ static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
 
 	drm_mode_config_init(dev);
 
-	ret = atmel_hlcdc_create_outputs(dev);
-	if (ret) {
-		drm_err(dev, "failed to create HLCDC outputs: %d\n", ret);
-		return ret;
-	}
-
 	ret = atmel_hlcdc_create_planes(dev);
 	if (ret) {
 		drm_err(dev, "failed to create planes: %d\n", ret);
@@ -741,6 +735,12 @@ static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
 		return ret;
 	}
 
+	ret = atmel_hlcdc_create_outputs(dev);
+	if (ret) {
+		drm_err(dev, "failed to create HLCDC outputs: %d\n", ret);
+		return ret;
+	}
+
 	dev->mode_config.min_width = dc->desc->min_width;
 	dev->mode_config.min_height = dc->desc->min_height;
 	dev->mode_config.max_width = dc->desc->max_width;
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
index 1f43e0feeedae54321a17efc266654e72e8b9d8e..e582315f70a119f2b39057ff112bc427117b85f5 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
@@ -71,6 +71,8 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
 	struct device_node *ep;
 	struct drm_panel *panel;
 	struct drm_bridge *bridge;
+	struct atmel_hlcdc_dc *dc = dev->dev_private;
+	struct drm_crtc *crtc = dc->crtc;
 	int ret;
 
 	ret = drm_of_find_panel_or_bridge(dev->dev->of_node, 0, endpoint,
@@ -95,7 +97,6 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
 	}
 
 
-	output->encoder.possible_crtcs = 0x1;
 
 	if (panel) {
 		bridge = drm_panel_bridge_add_typed(panel,
@@ -103,6 +104,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
 		if (IS_ERR(bridge))
 			return PTR_ERR(bridge);
 	}
+	output->encoder.possible_crtcs = drm_crtc_mask(crtc);
 
 	if (bridge) {
 		ret = drm_bridge_attach(&output->encoder, bridge, NULL, 0);

-- 
2.51.0