[PATCH v3 00/11] drm/cma-helper: Remove drm_fbdev_cma* functions

[PATCH v3 00/11] drm/cma-helper: Remove drm_fbdev_cma* functions

[Noralf Trønnes]

These are the remaining patches not applied due to missing review and:
- arm/hdlcd and rcar-du have started to use
  drm_fbdev_cma_set_suspend_unlocked() since last, so I have added patches
  converting them to drm_mode_config_helper_suspend/resume().
- tinydrm has gained a new driver ili9225

Noralf.


Noralf Trønnes (11):
  drm/arc: Use drm_fb_cma_fbdev_init/fini()
  drm/arm/hdlcd: Use drm_mode_config_helper_suspend/resume()
  drm/arm/hdlcd: Use drm_fb_cma_fbdev_init/fini()
  drm/hisilicon/kirin: Use drm_fb_cma_fbdev_init/fini()
  drm/meson: Use drm_fb_cma_fbdev_init/fini()
  drm/mxsfb: Use drm_fb_cma_fbdev_init/fini()
  drm/rcar-du: Use drm_mode_config_helper_suspend/resume()
  drm/rcar-du: Use drm_fb_cma_fbdev_init/fini()
  drm/fsl-dcu: Use drm_fb_cma_fbdev_init/fini()
  drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()
  drm/cma-helper: Remove drm_fbdev_cma* functions

 Documentation/gpu/todo.rst                      |   5 -
 drivers/gpu/drm/arc/arcpgu.h                    |   4 -
 drivers/gpu/drm/arc/arcpgu_drv.c                |  36 ++----
 drivers/gpu/drm/arm/hdlcd_drv.c                 |  62 ++--------
 drivers/gpu/drm/arm/hdlcd_drv.h                 |   2 -
 drivers/gpu/drm/drm_fb_cma_helper.c             | 158 ------------------------
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c       |  26 +---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h       |   1 -
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c |  35 +-----
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h |   4 -
 drivers/gpu/drm/meson/meson_drv.c               |  20 +--
 drivers/gpu/drm/meson/meson_drv.h               |   1 -
 drivers/gpu/drm/mxsfb/mxsfb_drv.c               |  21 +---
 drivers/gpu/drm/mxsfb/mxsfb_drv.h               |   1 -
 drivers/gpu/drm/rcar-du/rcar_du_drv.c           |  34 +----
 drivers/gpu/drm/rcar-du/rcar_du_drv.h           |   3 -
 drivers/gpu/drm/rcar-du/rcar_du_kms.c           |  20 +--
 drivers/gpu/drm/tinydrm/core/tinydrm-core.c     |  37 +-----
 drivers/gpu/drm/tinydrm/ili9225.c               |   3 +-
 drivers/gpu/drm/tinydrm/mi0283qt.c              |   3 +-
 drivers/gpu/drm/tinydrm/st7586.c                |   3 +-
 include/drm/drm_fb_cma_helper.h                 |  28 +----
 include/drm/tinydrm/tinydrm.h                   |   3 -
 23 files changed, 61 insertions(+), 449 deletions(-)

-- 
2.14.2

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[PATCH v3 01/11] drm/arc: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.
Remove unused function prototype arcpgu_fbdev_cma_init().

Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/arc/arcpgu.h     |  4 ----
 drivers/gpu/drm/arc/arcpgu_drv.c | 36 +++++++-----------------------------
 2 files changed, 7 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/arc/arcpgu.h b/drivers/gpu/drm/arc/arcpgu.h
index e8fcf3ab1d9a..90ef76b19f8a 100644
--- a/drivers/gpu/drm/arc/arcpgu.h
+++ b/drivers/gpu/drm/arc/arcpgu.h
@@ -20,7 +20,6 @@
 struct arcpgu_drm_private {
 	void __iomem		*regs;
 	struct clk		*clk;
-	struct drm_fbdev_cma	*fbdev;
 	struct drm_framebuffer	*fb;
 	struct drm_crtc		crtc;
 	struct drm_plane	*plane;
@@ -43,8 +42,5 @@ static inline u32 arc_pgu_read(struct arcpgu_drm_private *arcpgu,
 int arc_pgu_setup_crtc(struct drm_device *dev);
 int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np);
 int arcpgu_drm_sim_init(struct drm_device *drm, struct device_node *np);
-struct drm_fbdev_cma *arcpgu_fbdev_cma_init(struct drm_device *dev,
-	unsigned int preferred_bpp, unsigned int num_crtc,
-	unsigned int max_conn_count);
 
 #endif
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c
index f067de4e1e82..e25981adbed0 100644
--- a/drivers/gpu/drm/arc/arcpgu_drv.c
+++ b/drivers/gpu/drm/arc/arcpgu_drv.c
@@ -16,6 +16,7 @@
 
 #include <linux/clk.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
@@ -25,16 +26,9 @@
 #include "arcpgu.h"
 #include "arcpgu_regs.h"
 
-static void arcpgu_fb_output_poll_changed(struct drm_device *dev)
-{
-	struct arcpgu_drm_private *arcpgu = dev->dev_private;
-
-	drm_fbdev_cma_hotplug_event(arcpgu->fbdev);
-}
-
 static const struct drm_mode_config_funcs arcpgu_drm_modecfg_funcs = {
 	.fb_create  = drm_gem_fb_create,
-	.output_poll_changed = arcpgu_fb_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
@@ -51,13 +45,6 @@ static void arcpgu_setup_mode_config(struct drm_device *drm)
 
 DEFINE_DRM_GEM_CMA_FOPS(arcpgu_drm_ops);
 
-static void arcpgu_lastclose(struct drm_device *drm)
-{
-	struct arcpgu_drm_private *arcpgu = drm->dev_private;
-
-	drm_fbdev_cma_restore_mode(arcpgu->fbdev);
-}
-
 static int arcpgu_load(struct drm_device *drm)
 {
 	struct platform_device *pdev = to_platform_device(drm->dev);
@@ -113,13 +100,9 @@ static int arcpgu_load(struct drm_device *drm)
 	drm_mode_config_reset(drm);
 	drm_kms_helper_poll_init(drm);
 
-	arcpgu->fbdev = drm_fbdev_cma_init(drm, 16,
-					   drm->mode_config.num_connector);
-	if (IS_ERR(arcpgu->fbdev)) {
-		ret = PTR_ERR(arcpgu->fbdev);
-		arcpgu->fbdev = NULL;
-		return -ENODEV;
-	}
+	ret = drm_fb_cma_fbdev_init(drm, 16, 0);
+	if (ret)
+		return ret;
 
 	platform_set_drvdata(pdev, drm);
 	return 0;
@@ -127,12 +110,7 @@ static int arcpgu_load(struct drm_device *drm)
 
 static int arcpgu_unload(struct drm_device *drm)
 {
-	struct arcpgu_drm_private *arcpgu = drm->dev_private;
-
-	if (arcpgu->fbdev) {
-		drm_fbdev_cma_fini(arcpgu->fbdev);
-		arcpgu->fbdev = NULL;
-	}
+	drm_fb_cma_fbdev_fini(drm);
 	drm_kms_helper_poll_fini(drm);
 	drm_mode_config_cleanup(drm);
 
@@ -167,7 +145,7 @@ static int arcpgu_debugfs_init(struct drm_minor *minor)
 static struct drm_driver arcpgu_drm_driver = {
 	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
 			   DRIVER_ATOMIC,
-	.lastclose = arcpgu_lastclose,
+	.lastclose = drm_fb_helper_lastclose,
 	.name = "arcpgu",
 	.desc = "ARC PGU Controller",
 	.date = "20160219",
-- 
2.14.2

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[PATCH v3 02/11] drm/arm/hdlcd: Use drm_mode_config_helper_suspend/resume()

[Noralf Trønnes]

Replace driver's code with the generic helpers that do the same thing
including the NULL check.

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/arm/hdlcd_drv.c | 25 +++----------------------
 drivers/gpu/drm/arm/hdlcd_drv.h |  1 -
 2 files changed, 3 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index feaa8bc3d7b7..9800a9e388ef 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -27,6 +27,7 @@
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_modeset_helper.h>
 #include <drm/drm_of.h>
 
 #include "hdlcd_drv.h"
@@ -427,35 +428,15 @@ MODULE_DEVICE_TABLE(of, hdlcd_of_match);
 static int __maybe_unused hdlcd_pm_suspend(struct device *dev)
 {
 	struct drm_device *drm = dev_get_drvdata(dev);
-	struct hdlcd_drm_private *hdlcd = drm ? drm->dev_private : NULL;
 
-	if (!hdlcd)
-		return 0;
-
-	drm_kms_helper_poll_disable(drm);
-	drm_fbdev_cma_set_suspend_unlocked(hdlcd->fbdev, 1);
-
-	hdlcd->state = drm_atomic_helper_suspend(drm);
-	if (IS_ERR(hdlcd->state)) {
-		drm_fbdev_cma_set_suspend_unlocked(hdlcd->fbdev, 0);
-		drm_kms_helper_poll_enable(drm);
-		return PTR_ERR(hdlcd->state);
-	}
-
-	return 0;
+	return drm_mode_config_helper_suspend(drm);
 }
 
 static int __maybe_unused hdlcd_pm_resume(struct device *dev)
 {
 	struct drm_device *drm = dev_get_drvdata(dev);
-	struct hdlcd_drm_private *hdlcd = drm ? drm->dev_private : NULL;
 
-	if (!hdlcd)
-		return 0;
-
-	drm_atomic_helper_resume(drm, hdlcd->state);
-	drm_fbdev_cma_set_suspend_unlocked(hdlcd->fbdev, 0);
-	drm_kms_helper_poll_enable(drm);
+	drm_mode_config_helper_resume(drm);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.h b/drivers/gpu/drm/arm/hdlcd_drv.h
index 56f34dfff640..58d75d7e1b20 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.h
+++ b/drivers/gpu/drm/arm/hdlcd_drv.h
@@ -12,7 +12,6 @@ struct hdlcd_drm_private {
 	struct drm_fbdev_cma		*fbdev;
 	struct drm_crtc			crtc;
 	struct drm_plane		*plane;
-	struct drm_atomic_state		*state;
 #ifdef CONFIG_DEBUG_FS
 	atomic_t buffer_underrun_count;
 	atomic_t bus_error_count;
-- 
2.14.2

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[PATCH v3 03/11] drm/arm/hdlcd: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
---
 drivers/gpu/drm/arm/hdlcd_drv.c | 37 ++++++-------------------------------
 drivers/gpu/drm/arm/hdlcd_drv.h |  1 -
 2 files changed, 6 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index 9800a9e388ef..fd5b8c44af14 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -101,16 +101,9 @@ static int hdlcd_load(struct drm_device *drm, unsigned long flags)
 	return ret;
 }
 
-static void hdlcd_fb_output_poll_changed(struct drm_device *drm)
-{
-	struct hdlcd_drm_private *hdlcd = drm->dev_private;
-
-	drm_fbdev_cma_hotplug_event(hdlcd->fbdev);
-}
-
 static const struct drm_mode_config_funcs hdlcd_mode_config_funcs = {
 	.fb_create = drm_gem_fb_create,
-	.output_poll_changed = hdlcd_fb_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
@@ -125,13 +118,6 @@ static void hdlcd_setup_mode_config(struct drm_device *drm)
 	drm->mode_config.funcs = &hdlcd_mode_config_funcs;
 }
 
-static void hdlcd_lastclose(struct drm_device *drm)
-{
-	struct hdlcd_drm_private *hdlcd = drm->dev_private;
-
-	drm_fbdev_cma_restore_mode(hdlcd->fbdev);
-}
-
 static irqreturn_t hdlcd_irq(int irq, void *arg)
 {
 	struct drm_device *drm = arg;
@@ -247,7 +233,7 @@ static struct drm_driver hdlcd_driver = {
 	.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
 			   DRIVER_MODESET | DRIVER_PRIME |
 			   DRIVER_ATOMIC,
-	.lastclose = hdlcd_lastclose,
+	.lastclose = drm_fb_helper_lastclose,
 	.irq_handler = hdlcd_irq,
 	.irq_preinstall = hdlcd_irq_preinstall,
 	.irq_postinstall = hdlcd_irq_postinstall,
@@ -322,14 +308,9 @@ static int hdlcd_drm_bind(struct device *dev)
 	drm_mode_config_reset(drm);
 	drm_kms_helper_poll_init(drm);
 
-	hdlcd->fbdev = drm_fbdev_cma_init(drm, 32,
-					  drm->mode_config.num_connector);
-
-	if (IS_ERR(hdlcd->fbdev)) {
-		ret = PTR_ERR(hdlcd->fbdev);
-		hdlcd->fbdev = NULL;
+	ret = drm_fb_cma_fbdev_init(drm, 32, 0);
+	if (ret)
 		goto err_fbdev;
-	}
 
 	ret = drm_dev_register(drm, 0);
 	if (ret)
@@ -338,10 +319,7 @@ static int hdlcd_drm_bind(struct device *dev)
 	return 0;
 
 err_register:
-	if (hdlcd->fbdev) {
-		drm_fbdev_cma_fini(hdlcd->fbdev);
-		hdlcd->fbdev = NULL;
-	}
+	drm_fb_cma_fbdev_fini(drm);
 err_fbdev:
 	drm_kms_helper_poll_fini(drm);
 err_vblank:
@@ -367,10 +345,7 @@ static void hdlcd_drm_unbind(struct device *dev)
 	struct hdlcd_drm_private *hdlcd = drm->dev_private;
 
 	drm_dev_unregister(drm);
-	if (hdlcd->fbdev) {
-		drm_fbdev_cma_fini(hdlcd->fbdev);
-		hdlcd->fbdev = NULL;
-	}
+	drm_fb_cma_fbdev_fini(drm);
 	drm_kms_helper_poll_fini(drm);
 	component_unbind_all(dev, drm);
 	of_node_put(hdlcd->crtc.port);
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.h b/drivers/gpu/drm/arm/hdlcd_drv.h
index 58d75d7e1b20..fd438d177b64 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.h
+++ b/drivers/gpu/drm/arm/hdlcd_drv.h
@@ -9,7 +9,6 @@
 struct hdlcd_drm_private {
 	void __iomem			*mmio;
 	struct clk			*clk;
-	struct drm_fbdev_cma		*fbdev;
 	struct drm_crtc			crtc;
 	struct drm_plane		*plane;
 #ifdef CONFIG_DEBUG_FS
-- 
2.14.2

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[PATCH v3 04/11] drm/hisilicon/kirin: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.

Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Chen Feng <puck.chen@hisilicon.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 35 ++++---------------------
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h |  4 ---
 2 files changed, 5 insertions(+), 34 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index ddb0403f1975..e3673efbf1c2 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -21,6 +21,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_atomic_helper.h>
@@ -33,32 +34,17 @@ static struct kirin_dc_ops *dc_ops;
 
 static int kirin_drm_kms_cleanup(struct drm_device *dev)
 {
-	struct kirin_drm_private *priv = dev->dev_private;
-
-	if (priv->fbdev) {
-		drm_fbdev_cma_fini(priv->fbdev);
-		priv->fbdev = NULL;
-	}
-
+	drm_fb_cma_fbdev_fini(dev);
 	drm_kms_helper_poll_fini(dev);
 	dc_ops->cleanup(to_platform_device(dev->dev));
 	drm_mode_config_cleanup(dev);
-	devm_kfree(dev->dev, priv);
-	dev->dev_private = NULL;
 
 	return 0;
 }
 
-static void kirin_fbdev_output_poll_changed(struct drm_device *dev)
-{
-	struct kirin_drm_private *priv = dev->dev_private;
-
-	drm_fbdev_cma_hotplug_event(priv->fbdev);
-}
-
 static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
 	.fb_create = drm_gem_fb_create,
-	.output_poll_changed = kirin_fbdev_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
@@ -76,14 +62,8 @@ static void kirin_drm_mode_config_init(struct drm_device *dev)
 
 static int kirin_drm_kms_init(struct drm_device *dev)
 {
-	struct kirin_drm_private *priv;
 	int ret;
 
-	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
-	dev->dev_private = priv;
 	dev_set_drvdata(dev->dev, dev);
 
 	/* dev->mode_config initialization */
@@ -117,12 +97,9 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 	/* init kms poll for handling hpd */
 	drm_kms_helper_poll_init(dev);
 
-	priv->fbdev = drm_fbdev_cma_init(dev, 32,
-					 dev->mode_config.num_connector);
-
-	if (IS_ERR(priv->fbdev)) {
+	ret = drm_fb_cma_fbdev_init(dev, 32, 0);
+	if (ret) {
 		DRM_ERROR("failed to initialize fbdev.\n");
-		ret = PTR_ERR(priv->fbdev);
 		goto err_cleanup_poll;
 	}
 	return 0;
@@ -135,8 +112,6 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 	dc_ops->cleanup(to_platform_device(dev->dev));
 err_mode_config_cleanup:
 	drm_mode_config_cleanup(dev);
-	devm_kfree(dev->dev, priv);
-	dev->dev_private = NULL;
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
index 56cb62df065c..ad027d1cc826 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -19,10 +19,6 @@ struct kirin_dc_ops {
 	void (*cleanup)(struct platform_device *pdev);
 };
 
-struct kirin_drm_private {
-	struct drm_fbdev_cma *fbdev;
-};
-
 extern const struct kirin_dc_ops ade_dc_ops;
 
 #endif /* __KIRIN_DRM_DRV_H__ */
-- 
2.14.2

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[PATCH v3 05/11] drm/meson: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.

Cc: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/meson/meson_drv.c | 20 +++++---------------
 drivers/gpu/drm/meson/meson_drv.h |  1 -
 2 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index f9ad0e960263..55f0f2c07101 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -35,6 +35,7 @@
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_rect.h>
 #include <drm/drm_fb_helper.h>
@@ -68,15 +69,8 @@
  * - Powering Up HDMI controller and PHY
  */
 
-static void meson_fb_output_poll_changed(struct drm_device *dev)
-{
-	struct meson_drm *priv = dev->dev_private;
-
-	drm_fbdev_cma_hotplug_event(priv->fbdev);
-}
-
 static const struct drm_mode_config_funcs meson_mode_config_funcs = {
-	.output_poll_changed = meson_fb_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check        = drm_atomic_helper_check,
 	.atomic_commit       = drm_atomic_helper_commit,
 	.fb_create           = drm_gem_fb_create,
@@ -263,12 +257,9 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 
 	drm_mode_config_reset(drm);
 
-	priv->fbdev = drm_fbdev_cma_init(drm, 32,
-					 drm->mode_config.num_connector);
-	if (IS_ERR(priv->fbdev)) {
-		ret = PTR_ERR(priv->fbdev);
+	ret = drm_fb_cma_fbdev_init(drm, 32, 0);
+	if (ret)
 		goto free_drm;
-	}
 
 	drm_kms_helper_poll_init(drm);
 
@@ -294,11 +285,10 @@ static int meson_drv_bind(struct device *dev)
 static void meson_drv_unbind(struct device *dev)
 {
 	struct drm_device *drm = dev_get_drvdata(dev);
-	struct meson_drm *priv = drm->dev_private;
 
 	drm_dev_unregister(drm);
 	drm_kms_helper_poll_fini(drm);
-	drm_fbdev_cma_fini(priv->fbdev);
+	drm_fb_cma_fbdev_fini(drm);
 	drm_mode_config_cleanup(drm);
 	drm_dev_unref(drm);
 
diff --git a/drivers/gpu/drm/meson/meson_drv.h b/drivers/gpu/drm/meson/meson_drv.h
index 5e8b392b9d1f..746bbdbbdec3 100644
--- a/drivers/gpu/drm/meson/meson_drv.h
+++ b/drivers/gpu/drm/meson/meson_drv.h
@@ -33,7 +33,6 @@ struct meson_drm {
 
 	struct drm_device *drm;
 	struct drm_crtc *crtc;
-	struct drm_fbdev_cma *fbdev;
 	struct drm_plane *primary_plane;
 
 	/* Components Data */
-- 
2.14.2

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[PATCH v3 06/11] drm/mxsfb: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/mxsfb/mxsfb_drv.c | 21 ++++-----------------
 drivers/gpu/drm/mxsfb/mxsfb_drv.h |  1 -
 2 files changed, 4 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 1207ffe36250..d846dbfc22e9 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -223,11 +223,8 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
 
 	drm_kms_helper_poll_init(drm);
 
-	mxsfb->fbdev = drm_fbdev_cma_init(drm, 32,
-					  drm->mode_config.num_connector);
-	if (IS_ERR(mxsfb->fbdev)) {
-		ret = PTR_ERR(mxsfb->fbdev);
-		mxsfb->fbdev = NULL;
+	ret = drm_fb_cma_fbdev_init(drm, 32, 0);
+	if (ret) {
 		dev_err(drm->dev, "Failed to init FB CMA area\n");
 		goto err_cma;
 	}
@@ -250,10 +247,7 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
 
 static void mxsfb_unload(struct drm_device *drm)
 {
-	struct mxsfb_drm_private *mxsfb = drm->dev_private;
-
-	if (mxsfb->fbdev)
-		drm_fbdev_cma_fini(mxsfb->fbdev);
+	drm_fb_cma_fbdev_fini(drm);
 
 	drm_kms_helper_poll_fini(drm);
 	drm_mode_config_cleanup(drm);
@@ -267,13 +261,6 @@ static void mxsfb_unload(struct drm_device *drm)
 	pm_runtime_disable(drm->dev);
 }
 
-static void mxsfb_lastclose(struct drm_device *drm)
-{
-	struct mxsfb_drm_private *mxsfb = drm->dev_private;
-
-	drm_fbdev_cma_restore_mode(mxsfb->fbdev);
-}
-
 static int mxsfb_enable_vblank(struct drm_device *drm, unsigned int crtc)
 {
 	struct mxsfb_drm_private *mxsfb = drm->dev_private;
@@ -329,7 +316,7 @@ static struct drm_driver mxsfb_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET |
 				  DRIVER_PRIME | DRIVER_ATOMIC |
 				  DRIVER_HAVE_IRQ,
-	.lastclose		= mxsfb_lastclose,
+	.lastclose		= drm_fb_helper_lastclose,
 	.irq_handler		= mxsfb_irq_handler,
 	.irq_preinstall		= mxsfb_irq_preinstall,
 	.irq_uninstall		= mxsfb_irq_preinstall,
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.h b/drivers/gpu/drm/mxsfb/mxsfb_drv.h
index 5d0883fc805b..bedd6801edca 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.h
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.h
@@ -37,7 +37,6 @@ struct mxsfb_drm_private {
 	struct drm_simple_display_pipe	pipe;
 	struct drm_connector		connector;
 	struct drm_panel		*panel;
-	struct drm_fbdev_cma		*fbdev;
 };
 
 int mxsfb_setup_crtc(struct drm_device *dev);
-- 
2.14.2

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[PATCH v3 07/11] drm/rcar-du: Use drm_mode_config_helper_suspend/resume()

[Noralf Trønnes]

Replace driver's code with the generic helpers that do the same thing.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 21 +++------------------
 drivers/gpu/drm/rcar-du/rcar_du_drv.h |  1 -
 2 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 6e02c762a557..db040a64de45 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -22,10 +22,10 @@
 #include <linux/wait.h>
 
 #include <drm/drmP.h>
-#include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_modeset_helper.h>
 
 #include "rcar_du_drv.h"
 #include "rcar_du_kms.h"
@@ -310,30 +310,15 @@ static struct drm_driver rcar_du_driver = {
 static int rcar_du_pm_suspend(struct device *dev)
 {
 	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
-	struct drm_atomic_state *state;
 
-	drm_kms_helper_poll_disable(rcdu->ddev);
-	drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, true);
-
-	state = drm_atomic_helper_suspend(rcdu->ddev);
-	if (IS_ERR(state)) {
-		drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
-		drm_kms_helper_poll_enable(rcdu->ddev);
-		return PTR_ERR(state);
-	}
-
-	rcdu->suspend_state = state;
-
-	return 0;
+	return drm_mode_config_helper_suspend(rcdu->ddev);
 }
 
 static int rcar_du_pm_resume(struct device *dev)
 {
 	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
 
-	drm_atomic_helper_resume(rcdu->ddev, rcdu->suspend_state);
-	drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
-	drm_kms_helper_poll_enable(rcdu->ddev);
+	drm_mode_config_helper_resume(rcdu->ddev);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index f400fde65a0c..f8cd79488ece 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -81,7 +81,6 @@ struct rcar_du_device {
 
 	struct drm_device *ddev;
 	struct drm_fbdev_cma *fbdev;
-	struct drm_atomic_state *suspend_state;
 
 	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
 	unsigned int num_crtcs;
-- 
2.14.2

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[PATCH v3 08/11] drm/rcar-du: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 13 +++----------
 drivers/gpu/drm/rcar-du/rcar_du_drv.h |  2 --
 drivers/gpu/drm/rcar-du/rcar_du_kms.c | 20 +++++---------------
 3 files changed, 8 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index db040a64de45..de0374cb21b4 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -23,6 +23,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_modeset_helper.h>
@@ -269,19 +270,12 @@ MODULE_DEVICE_TABLE(of, rcar_du_of_table);
  * DRM operations
  */
 
-static void rcar_du_lastclose(struct drm_device *dev)
-{
-	struct rcar_du_device *rcdu = dev->dev_private;
-
-	drm_fbdev_cma_restore_mode(rcdu->fbdev);
-}
-
 DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops);
 
 static struct drm_driver rcar_du_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME
 				| DRIVER_ATOMIC,
-	.lastclose		= rcar_du_lastclose,
+	.lastclose		= drm_fb_helper_lastclose,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,
 	.gem_vm_ops		= &drm_gem_cma_vm_ops,
 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
@@ -339,8 +333,7 @@ static int rcar_du_remove(struct platform_device *pdev)
 
 	drm_dev_unregister(ddev);
 
-	if (rcdu->fbdev)
-		drm_fbdev_cma_fini(rcdu->fbdev);
+	drm_fb_cma_fbdev_fini(ddev);
 
 	drm_kms_helper_poll_fini(ddev);
 	drm_mode_config_cleanup(ddev);
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index f8cd79488ece..bb3516ad26b3 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -24,7 +24,6 @@
 struct clk;
 struct device;
 struct drm_device;
-struct drm_fbdev_cma;
 struct rcar_du_device;
 struct rcar_du_lvdsenc;
 
@@ -80,7 +79,6 @@ struct rcar_du_device {
 	void __iomem *mmio;
 
 	struct drm_device *ddev;
-	struct drm_fbdev_cma *fbdev;
 
 	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
 	unsigned int num_crtcs;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 566d1a948c8f..344c4613fbc1 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -16,6 +16,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
@@ -217,13 +218,6 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 	return drm_gem_fb_create(dev, file_priv, mode_cmd);
 }
 
-static void rcar_du_output_poll_changed(struct drm_device *dev)
-{
-	struct rcar_du_device *rcdu = dev->dev_private;
-
-	drm_fbdev_cma_hotplug_event(rcdu->fbdev);
-}
-
 /* -----------------------------------------------------------------------------
  * Atomic Check and Update
  */
@@ -278,7 +272,7 @@ static const struct drm_mode_config_helper_funcs rcar_du_mode_config_helper = {
 
 static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
 	.fb_create = rcar_du_fb_create,
-	.output_poll_changed = rcar_du_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = rcar_du_atomic_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
@@ -519,7 +513,6 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 
 	struct drm_device *dev = rcdu->ddev;
 	struct drm_encoder *encoder;
-	struct drm_fbdev_cma *fbdev;
 	unsigned int num_encoders;
 	unsigned int num_groups;
 	unsigned int i;
@@ -629,12 +622,9 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 	drm_kms_helper_poll_init(dev);
 
 	if (dev->mode_config.num_connector) {
-		fbdev = drm_fbdev_cma_init(dev, 32,
-					   dev->mode_config.num_connector);
-		if (IS_ERR(fbdev))
-			return PTR_ERR(fbdev);
-
-		rcdu->fbdev = fbdev;
+		ret = drm_fb_cma_fbdev_init(dev, 32, 0);
+		if (ret)
+			return ret;
 	} else {
 		dev_info(rcdu->dev,
 			 "no connector found, disabling fbdev emulation\n");
-- 
2.14.2

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[PATCH v3 09/11] drm/fsl-dcu: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.
Remove console.h inclusion which was forgotten when converting to the
suspend/resume helpers.

Cc: Stefan Agner <stefan@agner.ch>
Cc: Alison Wang <alison.wang@freescale.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 26 ++++++--------------------
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h |  1 -
 2 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 80232321a244..e487a2002783 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -11,7 +11,6 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
-#include <linux/console.h>
 #include <linux/io.h>
 #include <linux/mfd/syscon.h>
 #include <linux/mm.h>
@@ -25,6 +24,7 @@
 #include <drm/drmP.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_modeset_helper.h>
@@ -89,19 +89,15 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags)
 			"Invalid legacyfb_depth.  Defaulting to 24bpp\n");
 		legacyfb_depth = 24;
 	}
-	fsl_dev->fbdev = drm_fbdev_cma_init(dev, legacyfb_depth, 1);
-	if (IS_ERR(fsl_dev->fbdev)) {
-		ret = PTR_ERR(fsl_dev->fbdev);
-		fsl_dev->fbdev = NULL;
+	ret = drm_fb_cma_fbdev_init(dev, legacyfb_depth, 1);
+	if (ret)
 		goto done;
-	}
 
 	return 0;
 done:
 	drm_kms_helper_poll_fini(dev);
 
-	if (fsl_dev->fbdev)
-		drm_fbdev_cma_fini(fsl_dev->fbdev);
+	drm_fb_cma_fbdev_fini(dev);
 
 	drm_mode_config_cleanup(dev);
 	drm_irq_uninstall(dev);
@@ -112,13 +108,10 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags)
 
 static void fsl_dcu_unload(struct drm_device *dev)
 {
-	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
-
 	drm_atomic_helper_shutdown(dev);
 	drm_kms_helper_poll_fini(dev);
 
-	if (fsl_dev->fbdev)
-		drm_fbdev_cma_fini(fsl_dev->fbdev);
+	drm_fb_cma_fbdev_fini(dev);
 
 	drm_mode_config_cleanup(dev);
 	drm_irq_uninstall(dev);
@@ -147,19 +140,12 @@ static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static void fsl_dcu_drm_lastclose(struct drm_device *dev)
-{
-	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
-
-	drm_fbdev_cma_restore_mode(fsl_dev->fbdev);
-}
-
 DEFINE_DRM_GEM_CMA_FOPS(fsl_dcu_drm_fops);
 
 static struct drm_driver fsl_dcu_drm_driver = {
 	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
 				| DRIVER_PRIME | DRIVER_ATOMIC,
-	.lastclose		= fsl_dcu_drm_lastclose,
+	.lastclose		= drm_fb_helper_lastclose,
 	.load			= fsl_dcu_load,
 	.unload			= fsl_dcu_unload,
 	.irq_handler		= fsl_dcu_drm_irq,
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
index 93bfb98012d4..cb87bb74cb87 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
@@ -191,7 +191,6 @@ struct fsl_dcu_drm_device {
 	/*protects hardware register*/
 	spinlock_t irq_lock;
 	struct drm_device *drm;
-	struct drm_fbdev_cma *fbdev;
 	struct drm_crtc crtc;
 	struct drm_encoder encoder;
 	struct fsl_dcu_drm_connector connector;
-- 
2.14.2

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Re: [PATCH v3 09/11] drm/fsl-dcu: Use drm_fb_cma_fbdev_init/fini()

[Stefan Agner]

On 08.12.2017 20:37, Noralf Trønnes wrote:
> Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
> the fact that drm_device holds a pointer to the drm_fb_helper structure.
> This means that the driver doesn't have to keep track of that.
> Also use the drm_fb_helper functions directly.
> Remove console.h inclusion which was forgotten when converting to the
> suspend/resume helpers.

Just realized this never made it upstream. I guess its still valid and
could be applied?

--
Stefan

> 
> Cc: Stefan Agner <stefan@agner.ch>
> Cc: Alison Wang <alison.wang@freescale.com>
> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
> ---
>  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 26 ++++++--------------------
>  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h |  1 -
>  2 files changed, 6 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> index 80232321a244..e487a2002783 100644
> --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> @@ -11,7 +11,6 @@
>  
>  #include <linux/clk.h>
>  #include <linux/clk-provider.h>
> -#include <linux/console.h>
>  #include <linux/io.h>
>  #include <linux/mfd/syscon.h>
>  #include <linux/mm.h>
> @@ -25,6 +24,7 @@
>  #include <drm/drmP.h>
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_fb_helper.h>
>  #include <drm/drm_fb_cma_helper.h>
>  #include <drm/drm_gem_cma_helper.h>
>  #include <drm/drm_modeset_helper.h>
> @@ -89,19 +89,15 @@ static int fsl_dcu_load(struct drm_device *dev,
> unsigned long flags)
>  			"Invalid legacyfb_depth.  Defaulting to 24bpp\n");
>  		legacyfb_depth = 24;
>  	}
> -	fsl_dev->fbdev = drm_fbdev_cma_init(dev, legacyfb_depth, 1);
> -	if (IS_ERR(fsl_dev->fbdev)) {
> -		ret = PTR_ERR(fsl_dev->fbdev);
> -		fsl_dev->fbdev = NULL;
> +	ret = drm_fb_cma_fbdev_init(dev, legacyfb_depth, 1);
> +	if (ret)
>  		goto done;
> -	}
>  
>  	return 0;
>  done:
>  	drm_kms_helper_poll_fini(dev);
>  
> -	if (fsl_dev->fbdev)
> -		drm_fbdev_cma_fini(fsl_dev->fbdev);
> +	drm_fb_cma_fbdev_fini(dev);
>  
>  	drm_mode_config_cleanup(dev);
>  	drm_irq_uninstall(dev);
> @@ -112,13 +108,10 @@ static int fsl_dcu_load(struct drm_device *dev,
> unsigned long flags)
>  
>  static void fsl_dcu_unload(struct drm_device *dev)
>  {
> -	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
> -
>  	drm_atomic_helper_shutdown(dev);
>  	drm_kms_helper_poll_fini(dev);
>  
> -	if (fsl_dev->fbdev)
> -		drm_fbdev_cma_fini(fsl_dev->fbdev);
> +	drm_fb_cma_fbdev_fini(dev);
>  
>  	drm_mode_config_cleanup(dev);
>  	drm_irq_uninstall(dev);
> @@ -147,19 +140,12 @@ static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
>  	return IRQ_HANDLED;
>  }
>  
> -static void fsl_dcu_drm_lastclose(struct drm_device *dev)
> -{
> -	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
> -
> -	drm_fbdev_cma_restore_mode(fsl_dev->fbdev);
> -}
> -
>  DEFINE_DRM_GEM_CMA_FOPS(fsl_dcu_drm_fops);
>  
>  static struct drm_driver fsl_dcu_drm_driver = {
>  	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
>  				| DRIVER_PRIME | DRIVER_ATOMIC,
> -	.lastclose		= fsl_dcu_drm_lastclose,
> +	.lastclose		= drm_fb_helper_lastclose,
>  	.load			= fsl_dcu_load,
>  	.unload			= fsl_dcu_unload,
>  	.irq_handler		= fsl_dcu_drm_irq,
> diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
> b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
> index 93bfb98012d4..cb87bb74cb87 100644
> --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
> +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
> @@ -191,7 +191,6 @@ struct fsl_dcu_drm_device {
>  	/*protects hardware register*/
>  	spinlock_t irq_lock;
>  	struct drm_device *drm;
> -	struct drm_fbdev_cma *fbdev;
>  	struct drm_crtc crtc;
>  	struct drm_encoder encoder;
>  	struct fsl_dcu_drm_connector connector;
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Re: [PATCH v3 09/11] drm/fsl-dcu: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Den 26.09.2018 22.26, skrev Stefan Agner:
> On 08.12.2017 20:37, Noralf Trønnes wrote:
>> Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
>> the fact that drm_device holds a pointer to the drm_fb_helper structure.
>> This means that the driver doesn't have to keep track of that.
>> Also use the drm_fb_helper functions directly.
>> Remove console.h inclusion which was forgotten when converting to the
>> suspend/resume helpers.
> Just realized this never made it upstream. I guess its still valid and
> could be applied?

It has been superseeded by this patch:

[03/20] drm/fsl-dcu: Use drm_fbdev_generic_setup()
https://patchwork.freedesktop.org/patch/247865/

Noralf.

> --
> Stefan
>
>> Cc: Stefan Agner <stefan@agner.ch>
>> Cc: Alison Wang <alison.wang@freescale.com>
>> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
>> ---
>>   drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 26 ++++++--------------------
>>   drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h |  1 -
>>   2 files changed, 6 insertions(+), 21 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
>> b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
>> index 80232321a244..e487a2002783 100644
>> --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
>> +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
>> @@ -11,7 +11,6 @@
>>   
>>   #include <linux/clk.h>
>>   #include <linux/clk-provider.h>
>> -#include <linux/console.h>
>>   #include <linux/io.h>
>>   #include <linux/mfd/syscon.h>
>>   #include <linux/mm.h>
>> @@ -25,6 +24,7 @@
>>   #include <drm/drmP.h>
>>   #include <drm/drm_atomic_helper.h>
>>   #include <drm/drm_crtc_helper.h>
>> +#include <drm/drm_fb_helper.h>
>>   #include <drm/drm_fb_cma_helper.h>
>>   #include <drm/drm_gem_cma_helper.h>
>>   #include <drm/drm_modeset_helper.h>
>> @@ -89,19 +89,15 @@ static int fsl_dcu_load(struct drm_device *dev,
>> unsigned long flags)
>>   			"Invalid legacyfb_depth.  Defaulting to 24bpp\n");
>>   		legacyfb_depth = 24;
>>   	}
>> -	fsl_dev->fbdev = drm_fbdev_cma_init(dev, legacyfb_depth, 1);
>> -	if (IS_ERR(fsl_dev->fbdev)) {
>> -		ret = PTR_ERR(fsl_dev->fbdev);
>> -		fsl_dev->fbdev = NULL;
>> +	ret = drm_fb_cma_fbdev_init(dev, legacyfb_depth, 1);
>> +	if (ret)
>>   		goto done;
>> -	}
>>   
>>   	return 0;
>>   done:
>>   	drm_kms_helper_poll_fini(dev);
>>   
>> -	if (fsl_dev->fbdev)
>> -		drm_fbdev_cma_fini(fsl_dev->fbdev);
>> +	drm_fb_cma_fbdev_fini(dev);
>>   
>>   	drm_mode_config_cleanup(dev);
>>   	drm_irq_uninstall(dev);
>> @@ -112,13 +108,10 @@ static int fsl_dcu_load(struct drm_device *dev,
>> unsigned long flags)
>>   
>>   static void fsl_dcu_unload(struct drm_device *dev)
>>   {
>> -	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
>> -
>>   	drm_atomic_helper_shutdown(dev);
>>   	drm_kms_helper_poll_fini(dev);
>>   
>> -	if (fsl_dev->fbdev)
>> -		drm_fbdev_cma_fini(fsl_dev->fbdev);
>> +	drm_fb_cma_fbdev_fini(dev);
>>   
>>   	drm_mode_config_cleanup(dev);
>>   	drm_irq_uninstall(dev);
>> @@ -147,19 +140,12 @@ static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
>>   	return IRQ_HANDLED;
>>   }
>>   
>> -static void fsl_dcu_drm_lastclose(struct drm_device *dev)
>> -{
>> -	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
>> -
>> -	drm_fbdev_cma_restore_mode(fsl_dev->fbdev);
>> -}
>> -
>>   DEFINE_DRM_GEM_CMA_FOPS(fsl_dcu_drm_fops);
>>   
>>   static struct drm_driver fsl_dcu_drm_driver = {
>>   	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
>>   				| DRIVER_PRIME | DRIVER_ATOMIC,
>> -	.lastclose		= fsl_dcu_drm_lastclose,
>> +	.lastclose		= drm_fb_helper_lastclose,
>>   	.load			= fsl_dcu_load,
>>   	.unload			= fsl_dcu_unload,
>>   	.irq_handler		= fsl_dcu_drm_irq,
>> diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
>> b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
>> index 93bfb98012d4..cb87bb74cb87 100644
>> --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
>> +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h
>> @@ -191,7 +191,6 @@ struct fsl_dcu_drm_device {
>>   	/*protects hardware register*/
>>   	spinlock_t irq_lock;
>>   	struct drm_device *drm;
>> -	struct drm_fbdev_cma *fbdev;
>>   	struct drm_crtc crtc;
>>   	struct drm_encoder encoder;
>>   	struct fsl_dcu_drm_connector connector;

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[PATCH v3 10/11] drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init_with_funcs() and drm_fb_cma_fbdev_fini() which
relies on the fact that drm_device holds a pointer to the drm_fb_helper
structure. This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.
Remove todo entry.

Cc: David Lechner <david@lechnology.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: David Lechner <david@lechnology.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 Documentation/gpu/todo.rst                  |  5 ----
 drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 37 ++++-------------------------
 drivers/gpu/drm/tinydrm/ili9225.c           |  3 ++-
 drivers/gpu/drm/tinydrm/mi0283qt.c          |  3 ++-
 drivers/gpu/drm/tinydrm/st7586.c            |  3 ++-
 include/drm/tinydrm/tinydrm.h               |  3 ---
 6 files changed, 11 insertions(+), 43 deletions(-)

diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index af614746d9c5..f421a54527d2 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -395,11 +395,6 @@ those drivers as simple as possible, so lots of room for refactoring:
   one of the ideas for having a shared dsi/dbi helper, abstracting away the
   transport details more.
 
-- tinydrm_lastclose could be drm_fb_helper_lastclose. Only thing we need
-  for that is to store the drm_fb_helper pointer somewhere in
-  drm_device->mode_config. And then we could roll that out to all the
-  drivers.
-
 - tinydrm_gem_cma_prime_import_sg_table should probably go into the cma
   helpers, as a _vmapped variant (since not every driver needs the vmap).
   And tinydrm_gem_cma_free_object could the be merged into
diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
index bd7b82824a34..4c6616278c48 100644
--- a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
+++ b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
@@ -10,6 +10,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/tinydrm/tinydrm.h>
 #include <linux/device.h>
@@ -35,23 +36,6 @@
  * and registers the DRM device using devm_tinydrm_register().
  */
 
-/**
- * tinydrm_lastclose - DRM lastclose helper
- * @drm: DRM device
- *
- * This function ensures that fbdev is restored when drm_lastclose() is called
- * on the last drm_release(). Drivers can use this as their
- * &drm_driver->lastclose callback.
- */
-void tinydrm_lastclose(struct drm_device *drm)
-{
-	struct tinydrm_device *tdev = drm->dev_private;
-
-	DRM_DEBUG_KMS("\n");
-	drm_fbdev_cma_restore_mode(tdev->fbdev_cma);
-}
-EXPORT_SYMBOL(tinydrm_lastclose);
-
 /**
  * tinydrm_gem_cma_prime_import_sg_table - Produce a CMA GEM object from
  *     another driver's scatter/gather table of pinned pages
@@ -214,35 +198,24 @@ EXPORT_SYMBOL(devm_tinydrm_init);
 static int tinydrm_register(struct tinydrm_device *tdev)
 {
 	struct drm_device *drm = tdev->drm;
-	int bpp = drm->mode_config.preferred_depth;
-	struct drm_fbdev_cma *fbdev;
 	int ret;
 
 	ret = drm_dev_register(tdev->drm, 0);
 	if (ret)
 		return ret;
 
-	fbdev = drm_fbdev_cma_init_with_funcs(drm, bpp ? bpp : 32,
-					      drm->mode_config.num_connector,
-					      tdev->fb_funcs);
-	if (IS_ERR(fbdev))
-		DRM_ERROR("Failed to initialize fbdev: %ld\n", PTR_ERR(fbdev));
-	else
-		tdev->fbdev_cma = fbdev;
+	ret = drm_fb_cma_fbdev_init_with_funcs(drm, 0, 0, tdev->fb_funcs);
+	if (ret)
+		DRM_ERROR("Failed to initialize fbdev: %d\n", ret);
 
 	return 0;
 }
 
 static void tinydrm_unregister(struct tinydrm_device *tdev)
 {
-	struct drm_fbdev_cma *fbdev_cma = tdev->fbdev_cma;
-
 	drm_atomic_helper_shutdown(tdev->drm);
-	/* don't restore fbdev in lastclose, keep pipeline disabled */
-	tdev->fbdev_cma = NULL;
+	drm_fb_cma_fbdev_fini(tdev->drm);
 	drm_dev_unregister(tdev->drm);
-	if (fbdev_cma)
-		drm_fbdev_cma_fini(fbdev_cma);
 }
 
 static void devm_tinydrm_register_release(void *data)
diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c
index 3b766a26aa61..e8f1b3af3852 100644
--- a/drivers/gpu/drm/tinydrm/ili9225.c
+++ b/drivers/gpu/drm/tinydrm/ili9225.c
@@ -20,6 +20,7 @@
 #include <linux/spi/spi.h>
 #include <video/mipi_display.h>
 
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/tinydrm/mipi-dbi.h>
 #include <drm/tinydrm/tinydrm-helpers.h>
@@ -381,7 +382,7 @@ static struct drm_driver ili9225_driver = {
 				  DRIVER_ATOMIC,
 	.fops			= &ili9225_fops,
 	TINYDRM_GEM_DRIVER_OPS,
-	.lastclose		= tinydrm_lastclose,
+	.lastclose		= drm_fb_helper_lastclose,
 	.name			= "ili9225",
 	.desc			= "Ilitek ILI9225",
 	.date			= "20171106",
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
index 70ae4f76f455..674d407640be 100644
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
@@ -9,6 +9,7 @@
  * (at your option) any later version.
  */
 
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_modeset_helper.h>
 #include <drm/tinydrm/ili9341.h>
 #include <drm/tinydrm/mipi-dbi.h>
@@ -140,7 +141,7 @@ static struct drm_driver mi0283qt_driver = {
 				  DRIVER_ATOMIC,
 	.fops			= &mi0283qt_fops,
 	TINYDRM_GEM_DRIVER_OPS,
-	.lastclose		= tinydrm_lastclose,
+	.lastclose		= drm_fb_helper_lastclose,
 	.debugfs_init		= mipi_dbi_debugfs_init,
 	.name			= "mi0283qt",
 	.desc			= "Multi-Inno MI0283QT",
diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c
index 0a2c60da5c0e..5aebfceb740e 100644
--- a/drivers/gpu/drm/tinydrm/st7586.c
+++ b/drivers/gpu/drm/tinydrm/st7586.c
@@ -17,6 +17,7 @@
 #include <linux/spi/spi.h>
 #include <video/mipi_display.h>
 
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/tinydrm/mipi-dbi.h>
 #include <drm/tinydrm/tinydrm-helpers.h>
@@ -320,7 +321,7 @@ static struct drm_driver st7586_driver = {
 				  DRIVER_ATOMIC,
 	.fops			= &st7586_fops,
 	TINYDRM_GEM_DRIVER_OPS,
-	.lastclose		= tinydrm_lastclose,
+	.lastclose		= drm_fb_helper_lastclose,
 	.debugfs_init		= mipi_dbi_debugfs_init,
 	.name			= "st7586",
 	.desc			= "Sitronix ST7586",
diff --git a/include/drm/tinydrm/tinydrm.h b/include/drm/tinydrm/tinydrm.h
index 03cd9d72308c..07a9a11fe19d 100644
--- a/include/drm/tinydrm/tinydrm.h
+++ b/include/drm/tinydrm/tinydrm.h
@@ -19,14 +19,12 @@
  * @drm: DRM device
  * @pipe: Display pipe structure
  * @dirty_lock: Serializes framebuffer flushing
- * @fbdev_cma: CMA fbdev structure
  * @fb_funcs: Framebuffer functions used when creating framebuffers
  */
 struct tinydrm_device {
 	struct drm_device *drm;
 	struct drm_simple_display_pipe pipe;
 	struct mutex dirty_lock;
-	struct drm_fbdev_cma *fbdev_cma;
 	const struct drm_framebuffer_funcs *fb_funcs;
 };
 
@@ -80,7 +78,6 @@ pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
 	.type = DRM_MODE_TYPE_DRIVER, \
 	.clock = 1 /* pass validation */
 
-void tinydrm_lastclose(struct drm_device *drm);
 void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj);
 struct drm_gem_object *
 tinydrm_gem_cma_prime_import_sg_table(struct drm_device *drm,
-- 
2.14.2

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Re: [PATCH v3 10/11] drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()

[David Lechner]

On 12/08/2017 01:37 PM, Noralf Trønnes wrote:
> Use drm_fb_cma_fbdev_init_with_funcs() and drm_fb_cma_fbdev_fini() which
> relies on the fact that drm_device holds a pointer to the drm_fb_helper
> structure. This means that the driver doesn't have to keep track of that.
> Also use the drm_fb_helper functions directly.
> Remove todo entry.
> 
> Cc: David Lechner <david@lechnology.com>
> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
> Acked-by: David Lechner <david@lechnology.com>
> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
>   Documentation/gpu/todo.rst                  |  5 ----
>   drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 37 ++++-------------------------
>   drivers/gpu/drm/tinydrm/ili9225.c           |  3 ++-
>   drivers/gpu/drm/tinydrm/mi0283qt.c          |  3 ++-
>   drivers/gpu/drm/tinydrm/st7586.c            |  3 ++-
>   include/drm/tinydrm/tinydrm.h               |  3 ---
>   6 files changed, 11 insertions(+), 43 deletions(-)
> 

Tested-by: David Lechner <david@lechnolgy.com>

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Re: [PATCH v3 10/11] drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()

[Noralf Trønnes]

Den 08.12.2017 22.34, skrev David Lechner:
> On 12/08/2017 01:37 PM, Noralf Trønnes wrote:
>> Use drm_fb_cma_fbdev_init_with_funcs() and drm_fb_cma_fbdev_fini() which
>> relies on the fact that drm_device holds a pointer to the drm_fb_helper
>> structure. This means that the driver doesn't have to keep track of 
>> that.
>> Also use the drm_fb_helper functions directly.
>> Remove todo entry.
>>
>> Cc: David Lechner <david@lechnology.com>
>> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
>> Acked-by: David Lechner <david@lechnology.com>
>> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>> ---
>>   Documentation/gpu/todo.rst                  |  5 ----
>>   drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 37 
>> ++++-------------------------
>>   drivers/gpu/drm/tinydrm/ili9225.c           |  3 ++-
>>   drivers/gpu/drm/tinydrm/mi0283qt.c          |  3 ++-
>>   drivers/gpu/drm/tinydrm/st7586.c            |  3 ++-
>>   include/drm/tinydrm/tinydrm.h               |  3 ---
>>   6 files changed, 11 insertions(+), 43 deletions(-)
>>
>
> Tested-by: David Lechner <david@lechnolgy.com>
>

Thanks, applied to drm-misc.

Noralf.

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[PATCH v3 11/11] drm/cma-helper: Remove drm_fbdev_cma* functions

[Noralf Trønnes]

Remove the unused struct drm_fbdev_cma functions.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/drm_fb_cma_helper.c | 158 ------------------------------------
 include/drm/drm_fb_cma_helper.h     |  28 +------
 2 files changed, 3 insertions(+), 183 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index 186d00adfb5f..7e2a01fa8a38 100644
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -389,161 +389,3 @@ void drm_fb_cma_fbdev_fini(struct drm_device *dev)
 	kfree(to_fbdev_cma(fb_helper));
 }
 EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_fini);
-
-/**
- * drm_fbdev_cma_init_with_funcs() - Allocate and initializes a drm_fbdev_cma struct
- * @dev: DRM device
- * @preferred_bpp: Preferred bits per pixel for the device
- * @max_conn_count: Maximum number of connectors
- * @funcs: fb helper functions, in particular a custom dirty() callback
- *
- * Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR.
- */
-struct drm_fbdev_cma *drm_fbdev_cma_init_with_funcs(struct drm_device *dev,
-	unsigned int preferred_bpp, unsigned int max_conn_count,
-	const struct drm_framebuffer_funcs *funcs)
-{
-	struct drm_fbdev_cma *fbdev_cma;
-	struct drm_fb_helper *helper;
-	int ret;
-
-	fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL);
-	if (!fbdev_cma) {
-		dev_err(dev->dev, "Failed to allocate drm fbdev.\n");
-		return ERR_PTR(-ENOMEM);
-	}
-	fbdev_cma->fb_funcs = funcs;
-
-	helper = &fbdev_cma->fb_helper;
-
-	drm_fb_helper_prepare(dev, helper, &drm_fb_cma_helper_funcs);
-
-	ret = drm_fb_helper_init(dev, helper, max_conn_count);
-	if (ret < 0) {
-		dev_err(dev->dev, "Failed to initialize drm fb helper.\n");
-		goto err_free;
-	}
-
-	ret = drm_fb_helper_single_add_all_connectors(helper);
-	if (ret < 0) {
-		dev_err(dev->dev, "Failed to add connectors.\n");
-		goto err_drm_fb_helper_fini;
-
-	}
-
-	ret = drm_fb_helper_initial_config(helper, preferred_bpp);
-	if (ret < 0) {
-		dev_err(dev->dev, "Failed to set initial hw configuration.\n");
-		goto err_drm_fb_helper_fini;
-	}
-
-	return fbdev_cma;
-
-err_drm_fb_helper_fini:
-	drm_fb_helper_fini(helper);
-err_free:
-	kfree(fbdev_cma);
-
-	return ERR_PTR(ret);
-}
-EXPORT_SYMBOL_GPL(drm_fbdev_cma_init_with_funcs);
-
-static const struct drm_framebuffer_funcs drm_fb_cma_funcs = {
-	.destroy	= drm_gem_fb_destroy,
-	.create_handle	= drm_gem_fb_create_handle,
-};
-
-/**
- * drm_fbdev_cma_init() - Allocate and initializes a drm_fbdev_cma struct
- * @dev: DRM device
- * @preferred_bpp: Preferred bits per pixel for the device
- * @max_conn_count: Maximum number of connectors
- *
- * Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR.
- */
-struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev,
-	unsigned int preferred_bpp, unsigned int max_conn_count)
-{
-	return drm_fbdev_cma_init_with_funcs(dev, preferred_bpp,
-					     max_conn_count,
-					     &drm_fb_cma_funcs);
-}
-EXPORT_SYMBOL_GPL(drm_fbdev_cma_init);
-
-/**
- * drm_fbdev_cma_fini() - Free drm_fbdev_cma struct
- * @fbdev_cma: The drm_fbdev_cma struct
- */
-void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma)
-{
-	drm_fb_helper_unregister_fbi(&fbdev_cma->fb_helper);
-	if (fbdev_cma->fb_helper.fbdev)
-		drm_fbdev_cma_defio_fini(fbdev_cma->fb_helper.fbdev);
-
-	if (fbdev_cma->fb_helper.fb)
-		drm_framebuffer_remove(fbdev_cma->fb_helper.fb);
-
-	drm_fb_helper_fini(&fbdev_cma->fb_helper);
-	kfree(fbdev_cma);
-}
-EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini);
-
-/**
- * drm_fbdev_cma_restore_mode() - Restores initial framebuffer mode
- * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
- *
- * This function is usually called from the &drm_driver.lastclose callback.
- */
-void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma)
-{
-	if (fbdev_cma)
-		drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev_cma->fb_helper);
-}
-EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode);
-
-/**
- * drm_fbdev_cma_hotplug_event() - Poll for hotpulug events
- * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
- *
- * This function is usually called from the &drm_mode_config.output_poll_changed
- * callback.
- */
-void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
-{
-	if (fbdev_cma)
-		drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
-}
-EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
-
-/**
- * drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
- * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
- * @state: desired state, zero to resume, non-zero to suspend
- *
- * Calls drm_fb_helper_set_suspend, which is a wrapper around
- * fb_set_suspend implemented by fbdev core.
- */
-void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state)
-{
-	if (fbdev_cma)
-		drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
-}
-EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
-
-/**
- * drm_fbdev_cma_set_suspend_unlocked - wrapper around
- *                                      drm_fb_helper_set_suspend_unlocked
- * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
- * @state: desired state, zero to resume, non-zero to suspend
- *
- * Calls drm_fb_helper_set_suspend, which is a wrapper around
- * fb_set_suspend implemented by fbdev core.
- */
-void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
-					bool state)
-{
-	if (fbdev_cma)
-		drm_fb_helper_set_suspend_unlocked(&fbdev_cma->fb_helper,
-						   state);
-}
-EXPORT_SYMBOL(drm_fbdev_cma_set_suspend_unlocked);
diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
index d532f88a8d55..6dc846c91e48 100644
--- a/include/drm/drm_fb_cma_helper.h
+++ b/include/drm/drm_fb_cma_helper.h
@@ -2,18 +2,10 @@
 #ifndef __DRM_FB_CMA_HELPER_H__
 #define __DRM_FB_CMA_HELPER_H__
 
-struct drm_fbdev_cma;
-struct drm_gem_cma_object;
-
-struct drm_fb_helper_surface_size;
-struct drm_framebuffer_funcs;
-struct drm_fb_helper_funcs;
-struct drm_framebuffer;
-struct drm_fb_helper;
 struct drm_device;
-struct drm_file;
-struct drm_mode_fb_cmd2;
-struct drm_plane;
+struct drm_framebuffer;
+struct drm_framebuffer_funcs;
+struct drm_gem_cma_object;
 struct drm_plane_state;
 
 int drm_fb_cma_fbdev_init_with_funcs(struct drm_device *dev,
@@ -23,19 +15,6 @@ int drm_fb_cma_fbdev_init(struct drm_device *dev, unsigned int preferred_bpp,
 			  unsigned int max_conn_count);
 void drm_fb_cma_fbdev_fini(struct drm_device *dev);
 
-struct drm_fbdev_cma *drm_fbdev_cma_init_with_funcs(struct drm_device *dev,
-	unsigned int preferred_bpp, unsigned int max_conn_count,
-	const struct drm_framebuffer_funcs *funcs);
-struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev,
-	unsigned int preferred_bpp, unsigned int max_conn_count);
-void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
-
-void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
-void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
-void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state);
-void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
-					bool state);
-
 struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
 	unsigned int plane);
 
@@ -44,4 +23,3 @@ dma_addr_t drm_fb_cma_get_gem_addr(struct drm_framebuffer *fb,
 				   unsigned int plane);
 
 #endif
-
-- 
2.14.2

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Re: [PATCH v3 00/11] drm/cma-helper: Remove drm_fbdev_cma* functions

[Noralf Trønnes]

Den 08.12.2017 20.37, skrev Noralf Trønnes:
> These are the remaining patches not applied due to missing review and:
> - arm/hdlcd and rcar-du have started to use
>    drm_fbdev_cma_set_suspend_unlocked() since last, so I have added patches
>    converting them to drm_mode_config_helper_suspend/resume().
> - tinydrm has gained a new driver ili9225
>
> Noralf.

Just a note that this series has been superseeded by the generic fbdev
work. During Christmas I got the idea that maybe it was possible to do
generic fbdev using dumb buffers. A prototype for this was done in one
day, but it took months before it was mergeable due to a drm_client API
that had to be made.

So this is the superseeding series based on the generic fbdev work:

drm/cma-helper drivers: Use drm_fbdev_generic_setup()
https://patchwork.freedesktop.org/series/49382/


Noralf.

>
> Noralf Trønnes (11):
>    drm/arc: Use drm_fb_cma_fbdev_init/fini()
>    drm/arm/hdlcd: Use drm_mode_config_helper_suspend/resume()
>    drm/arm/hdlcd: Use drm_fb_cma_fbdev_init/fini()
>    drm/hisilicon/kirin: Use drm_fb_cma_fbdev_init/fini()
>    drm/meson: Use drm_fb_cma_fbdev_init/fini()
>    drm/mxsfb: Use drm_fb_cma_fbdev_init/fini()
>    drm/rcar-du: Use drm_mode_config_helper_suspend/resume()
>    drm/rcar-du: Use drm_fb_cma_fbdev_init/fini()
>    drm/fsl-dcu: Use drm_fb_cma_fbdev_init/fini()
>    drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()
>    drm/cma-helper: Remove drm_fbdev_cma* functions
>
>   Documentation/gpu/todo.rst                      |   5 -
>   drivers/gpu/drm/arc/arcpgu.h                    |   4 -
>   drivers/gpu/drm/arc/arcpgu_drv.c                |  36 ++----
>   drivers/gpu/drm/arm/hdlcd_drv.c                 |  62 ++--------
>   drivers/gpu/drm/arm/hdlcd_drv.h                 |   2 -
>   drivers/gpu/drm/drm_fb_cma_helper.c             | 158 ------------------------
>   drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c       |  26 +---
>   drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h       |   1 -
>   drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c |  35 +-----
>   drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h |   4 -
>   drivers/gpu/drm/meson/meson_drv.c               |  20 +--
>   drivers/gpu/drm/meson/meson_drv.h               |   1 -
>   drivers/gpu/drm/mxsfb/mxsfb_drv.c               |  21 +---
>   drivers/gpu/drm/mxsfb/mxsfb_drv.h               |   1 -
>   drivers/gpu/drm/rcar-du/rcar_du_drv.c           |  34 +----
>   drivers/gpu/drm/rcar-du/rcar_du_drv.h           |   3 -
>   drivers/gpu/drm/rcar-du/rcar_du_kms.c           |  20 +--
>   drivers/gpu/drm/tinydrm/core/tinydrm-core.c     |  37 +-----
>   drivers/gpu/drm/tinydrm/ili9225.c               |   3 +-
>   drivers/gpu/drm/tinydrm/mi0283qt.c              |   3 +-
>   drivers/gpu/drm/tinydrm/st7586.c                |   3 +-
>   include/drm/drm_fb_cma_helper.h                 |  28 +----
>   include/drm/tinydrm/tinydrm.h                   |   3 -
>   23 files changed, 61 insertions(+), 449 deletions(-)
>

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