Merge tag 'imx-drm-next-2021-01-04' of git://git.pengutronix.de/git/pza/linux into drm-next

drm/imx: fixes and drm managed resources

- Reduce stack usage in ipu-di.
- Fix imx-ldb for compile tests.
- Make drm encoder control functions optional.
- Add drm managed variants drmm_encoder_alloc(),
  drmm_simple_encoder_alloc(), drmm_universal_plane_alloc(), and
  drmm_crtc_alloc_with_planes() for drm_encoder_init(),
  drm_simple_encoder_init(), drm_universal_plane_init(), and
  drm_crtc_init_with_planes(), respectively.
- Update imx-drm to use the new functions for drm managed resource
  allocation, moving initialization from bind to probe where possible.
- Fix imx-tve clock provider leak.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
[danvet: Fix conflict between doc changes by both Philipp and Simon
Ser, see 9999587b684f ("drm: rework description of primary and cursor
planes")]
From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/c745fc1596898932c9454fd2979297b4242566a2.camel@pengutronix.de

1 files changed, 55 insertions, 54 deletions

diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 2a8d2e32e7b4..bc8c3f802a15 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -19,6 +19,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_fb_helper.h>
+#include <drm/drm_managed.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
 
@@ -99,9 +100,13 @@ enum {
 	TVE_MODE_VGA,
 };
 
-struct imx_tve {
+struct imx_tve_encoder {
 	struct drm_connector connector;
 	struct drm_encoder encoder;
+	struct imx_tve *tve;
+};
+
+struct imx_tve {
 	struct device *dev;
 	int mode;
 	int di_hsync_pin;
@@ -118,12 +123,12 @@ struct imx_tve {
 
 static inline struct imx_tve *con_to_tve(struct drm_connector *c)
 {
-	return container_of(c, struct imx_tve, connector);
+	return container_of(c, struct imx_tve_encoder, connector)->tve;
 }
 
 static inline struct imx_tve *enc_to_tve(struct drm_encoder *e)
 {
-	return container_of(e, struct imx_tve, encoder);
+	return container_of(e, struct imx_tve_encoder, encoder)->tve;
 }
 
 static void tve_enable(struct imx_tve *tve)
@@ -418,7 +423,7 @@ static int tve_clk_init(struct imx_tve *tve, void __iomem *base)
 	init.parent_names = (const char **)&tve_di_parent;
 
 	tve->clk_hw_di.init = &init;
-	tve->di_clk = clk_register(tve->dev, &tve->clk_hw_di);
+	tve->di_clk = devm_clk_register(tve->dev, &tve->clk_hw_di);
 	if (IS_ERR(tve->di_clk)) {
 		dev_err(tve->dev, "failed to register TVE output clock: %ld\n",
 			PTR_ERR(tve->di_clk));
@@ -428,33 +433,6 @@ static int tve_clk_init(struct imx_tve *tve, void __iomem *base)
 	return 0;
 }
 
-static int imx_tve_register(struct drm_device *drm, struct imx_tve *tve)
-{
-	int encoder_type;
-	int ret;
-
-	encoder_type = tve->mode == TVE_MODE_VGA ?
-				DRM_MODE_ENCODER_DAC : DRM_MODE_ENCODER_TVDAC;
-
-	ret = imx_drm_encoder_parse_of(drm, &tve->encoder, tve->dev->of_node);
-	if (ret)
-		return ret;
-
-	drm_encoder_helper_add(&tve->encoder, &imx_tve_encoder_helper_funcs);
-	drm_simple_encoder_init(drm, &tve->encoder, encoder_type);
-
-	drm_connector_helper_add(&tve->connector,
-			&imx_tve_connector_helper_funcs);
-	drm_connector_init_with_ddc(drm, &tve->connector,
-				    &imx_tve_connector_funcs,
-				    DRM_MODE_CONNECTOR_VGA,
-				    tve->ddc);
-
-	drm_connector_attach_encoder(&tve->connector, &tve->encoder);
-
-	return 0;
-}
-
 static void imx_tve_disable_regulator(void *data)
 {
 	struct imx_tve *tve = data;
@@ -502,8 +480,49 @@ static int of_get_tve_mode(struct device_node *np)
 
 static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 {
-	struct platform_device *pdev = to_platform_device(dev);
 	struct drm_device *drm = data;
+	struct imx_tve *tve = dev_get_drvdata(dev);
+	struct imx_tve_encoder *tvee;
+	struct drm_encoder *encoder;
+	struct drm_connector *connector;
+	int encoder_type;
+	int ret;
+
+	encoder_type = tve->mode == TVE_MODE_VGA ?
+		       DRM_MODE_ENCODER_DAC : DRM_MODE_ENCODER_TVDAC;
+
+	tvee = drmm_simple_encoder_alloc(drm, struct imx_tve_encoder, encoder,
+					 encoder_type);
+	if (IS_ERR(tvee))
+		return PTR_ERR(tvee);
+
+	tvee->tve = tve;
+	encoder = &tvee->encoder;
+	connector = &tvee->connector;
+
+	ret = imx_drm_encoder_parse_of(drm, encoder, tve->dev->of_node);
+	if (ret)
+		return ret;
+
+	drm_encoder_helper_add(encoder, &imx_tve_encoder_helper_funcs);
+
+	drm_connector_helper_add(connector, &imx_tve_connector_helper_funcs);
+	ret = drm_connector_init_with_ddc(drm, connector,
+					  &imx_tve_connector_funcs,
+					  DRM_MODE_CONNECTOR_VGA, tve->ddc);
+	if (ret)
+		return ret;
+
+	return drm_connector_attach_encoder(connector, encoder);
+}
+
+static const struct component_ops imx_tve_ops = {
+	.bind	= imx_tve_bind,
+};
+
+static int imx_tve_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct device_node *ddc_node;
 	struct imx_tve *tve;
@@ -513,8 +532,9 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 	int irq;
 	int ret;
 
-	tve = dev_get_drvdata(dev);
-	memset(tve, 0, sizeof(*tve));
+	tve = devm_kzalloc(dev, sizeof(*tve), GFP_KERNEL);
+	if (!tve)
+		return -ENOMEM;
 
 	tve->dev = dev;
 
@@ -621,28 +641,9 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 	if (ret)
 		return ret;
 
-	ret = imx_tve_register(drm, tve);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-static const struct component_ops imx_tve_ops = {
-	.bind	= imx_tve_bind,
-};
-
-static int imx_tve_probe(struct platform_device *pdev)
-{
-	struct imx_tve *tve;
-
-	tve = devm_kzalloc(&pdev->dev, sizeof(*tve), GFP_KERNEL);
-	if (!tve)
-		return -ENOMEM;
-
 	platform_set_drvdata(pdev, tve);
 
-	return component_add(&pdev->dev, &imx_tve_ops);
+	return component_add(dev, &imx_tve_ops);
 }
 
 static int imx_tve_remove(struct platform_device *pdev)