linux-kernel - [PATCH 08/14] drm/panel/khadas-ts050: Use refcounted allocation in place of devm

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Message-Id: <20250710-b4-driver-convert-last-part-july-v1-8-de73ba81b2f5@redhat.com>
Date: Thu, 10 Jul 2025 23:31:19 -0500
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <jessica.zhang@....qualcomm.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>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Sumit Semwal <sumit.semwal@...aro.org>, 
 Casey Connolly <casey.connolly@...aro.org>, 
 Jerry Han <hanxu5@...qin.corp-partner.google.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 08/14] drm/panel/khadas-ts050: Use refcounted allocation in
 place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel. In the call to the new API, avoid using explicit type and use
__typeof() for more type safety.

Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
 drivers/gpu/drm/panel/panel-khadas-ts050.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-khadas-ts050.c b/drivers/gpu/drm/panel/panel-khadas-ts050.c
index 0e5e8e57bd1e573af934fe22b59f6513aac4dae4..67ca055f06f39f74ec4c34120c644d97b62c3921 100644
--- a/drivers/gpu/drm/panel/panel-khadas-ts050.c
+++ b/drivers/gpu/drm/panel/panel-khadas-ts050.c
@@ -821,9 +821,6 @@ static int khadas_ts050_panel_add(struct khadas_ts050_panel *khadas_ts050)
 		return dev_err_probe(dev, PTR_ERR(khadas_ts050->enable_gpio),
 				     "failed to get enable gpio");
 
-	drm_panel_init(&khadas_ts050->base, &khadas_ts050->link->dev,
-		       &khadas_ts050_panel_funcs, DRM_MODE_CONNECTOR_DSI);
-
 	err = drm_panel_of_backlight(&khadas_ts050->base);
 	if (err)
 		return err;
@@ -850,10 +847,12 @@ static int khadas_ts050_panel_probe(struct mipi_dsi_device *dsi)
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
 			  MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
 
-	khadas_ts050 = devm_kzalloc(&dsi->dev, sizeof(*khadas_ts050),
-				    GFP_KERNEL);
-	if (!khadas_ts050)
-		return -ENOMEM;
+	khadas_ts050 = devm_drm_panel_alloc(&dsi->dev, __typeof(*khadas_ts050),
+					    base, &khadas_ts050_panel_funcs,
+					    DRM_MODE_CONNECTOR_DSI);
+
+	if (IS_ERR(khadas_ts050))
+		return PTR_ERR(khadas_ts050);
 
 	khadas_ts050->panel_data = (struct khadas_ts050_panel_data *)data;
 	mipi_dsi_set_drvdata(dsi, khadas_ts050);

-- 
2.48.1