[v2,17/21] drm/imx: parallel-display: move initialization into probe

Commit Message

Philipp Zabel Sept. 11, 2020, 1:38 p.m. UTC

The parts of the initialization do not require the drm device can be
done once during probe instead of possibly multiple times during bind.
The bind function only creates the encoder.

Signed-off-by: Philipp Zabel <[e-mail]>
---
New in v2.
---
 drivers/gpu/drm/imx/parallel-display.c | 42 ++++++++++++--------------
 1 file changed, 20 insertions(+), 22 deletions(-)

Patch

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 16e576f8ee83..42b44dbf45f5 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -261,6 +261,10 @@  static int imx_pd_register(struct drm_device *drm,
 	struct drm_bridge *bridge = &imxpd->bridge;
 	int ret;
 
+	memset(connector, 0, sizeof(*connector));
+	memset(encoder, 0, sizeof(*encoder));
+	memset(bridge, 0, sizeof(*bridge));
+
 	ret = imx_drm_encoder_parse_of(drm, encoder, imxpd->dev->of_node);
 	if (ret)
 		return ret;
@@ -301,6 +305,18 @@  static int imx_pd_register(struct drm_device *drm,
 static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 {
 	struct drm_device *drm = data;
+	struct imx_parallel_display *imxpd = dev_get_drvdata(dev);
+
+	return imx_pd_register(drm, imxpd);
+}
+
+static const struct component_ops imx_pd_ops = {
+	.bind	= imx_pd_bind,
+};
+
+static int imx_pd_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	const u8 *edidp;
 	struct imx_parallel_display *imxpd;
@@ -309,8 +325,9 @@  static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	u32 bus_format = 0;
 	const char *fmt;
 
-	imxpd = dev_get_drvdata(dev);
-	memset(imxpd, 0, sizeof(*imxpd));
+	imxpd = devm_kzalloc(dev, sizeof(*imxpd), GFP_KERNEL);
+	if (!imxpd)
+		return -ENOMEM;
 
 	/* port@1 is the output port */
 	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel,
@@ -337,28 +354,9 @@  static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 
 	imxpd->dev = dev;
 
-	ret = imx_pd_register(drm, imxpd);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-static const struct component_ops imx_pd_ops = {
-	.bind	= imx_pd_bind,
-};
-
-static int imx_pd_probe(struct platform_device *pdev)
-{
-	struct imx_parallel_display *imxpd;
-
-	imxpd = devm_kzalloc(&pdev->dev, sizeof(*imxpd), GFP_KERNEL);
-	if (!imxpd)
-		return -ENOMEM;
-
 	platform_set_drvdata(pdev, imxpd);
 
-	return component_add(&pdev->dev, &imx_pd_ops);
+	return component_add(dev, &imx_pd_ops);
 }
 
 static int imx_pd_remove(struct platform_device *pdev)