[PATCH 74/86] drm/armada: Run DRM default client setup
Thomas Zimmermann
tzimmermann at suse.de
Fri Aug 16 12:23:40 UTC 2024
Rework fbdev probing to support fbdev_probe in struct drm_driver
and remove the old fb_probe callback. Provide an initializer macro
for struct drm_driver that sets the callback according to the kernel
configuration.
Call drm_client_setup() to run the kernel's default client setup
for DRM. Set fbdev_probe in struct drm_driver, so that the client
setup can start the common fbdev client.
The armada driver specifies a preferred color mode of 32. As this
is the default if no format has been given, leave it out entirely.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Cc: Russell King <linux at armlinux.org.uk>
---
drivers/gpu/drm/armada/armada_drm.h | 11 ++-
drivers/gpu/drm/armada/armada_drv.c | 4 +-
drivers/gpu/drm/armada/armada_fbdev.c | 115 ++------------------------
3 files changed, 17 insertions(+), 113 deletions(-)
diff --git a/drivers/gpu/drm/armada/armada_drm.h b/drivers/gpu/drm/armada/armada_drm.h
index c303e8c7ff6c..3c0ff221a43b 100644
--- a/drivers/gpu/drm/armada/armada_drm.h
+++ b/drivers/gpu/drm/armada/armada_drm.h
@@ -16,6 +16,8 @@ struct armada_crtc;
struct armada_gem_object;
struct clk;
struct drm_display_mode;
+struct drm_fb_helper;
+struct drm_fb_helper_surface_size;
static inline void
armada_updatel(uint32_t val, uint32_t mask, void __iomem *ptr)
@@ -74,10 +76,13 @@ struct armada_private {
#define drm_to_armada_dev(dev) container_of(dev, struct armada_private, drm)
#if defined(CONFIG_DRM_FBDEV_EMULATION)
-void armada_fbdev_setup(struct drm_device *dev);
+int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,
+ struct drm_fb_helper_surface_size *sizes);
+#define ARMADA_FBDEV_DRIVER_OPS \
+ .fbdev_probe = armada_fbdev_driver_fbdev_probe
#else
-static inline void armada_fbdev_setup(struct drm_device *dev)
-{ }
+#define ARMADA_FBDEV_DRIVER_OPS \
+ .fbdev_probe = NULL
#endif
int armada_overlay_plane_create(struct drm_device *, unsigned long);
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index e51ecc4f7ef4..3dc5f0499e4c 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -12,6 +12,7 @@
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_setup.h>
#include <drm/drm_drv.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_managed.h>
@@ -39,6 +40,7 @@ DEFINE_DRM_GEM_FOPS(armada_drm_fops);
static const struct drm_driver armada_drm_driver = {
.gem_prime_import = armada_gem_prime_import,
.dumb_create = armada_gem_dumb_create,
+ ARMADA_FBDEV_DRIVER_OPS,
.major = 1,
.minor = 0,
.name = "armada-drm",
@@ -137,7 +139,7 @@ static int armada_drm_bind(struct device *dev)
armada_drm_debugfs_init(priv->drm.primary);
#endif
- armada_fbdev_setup(&priv->drm);
+ drm_client_setup(&priv->drm, NULL);
return 0;
diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c
index d223176912b6..1ad87bb0bad9 100644
--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@@ -39,8 +39,10 @@ static const struct fb_ops armada_fb_ops = {
.fb_destroy = armada_fbdev_fb_destroy,
};
-static int armada_fbdev_create(struct drm_fb_helper *fbh,
- struct drm_fb_helper_surface_size *sizes)
+static const struct drm_fb_helper_funcs armada_fbdev_helper_funcs;
+
+int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,
+ struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = fbh->dev;
struct drm_mode_fb_cmd2 mode;
@@ -98,6 +100,7 @@ static int armada_fbdev_create(struct drm_fb_helper *fbh,
info->fix.smem_len = obj->obj.size;
info->screen_size = obj->obj.size;
info->screen_base = ptr;
+ fbh->funcs = &armada_fbdev_helper_funcs;
fbh->fb = &dfb->fb;
drm_fb_helper_fill_info(info, fbh, sizes);
@@ -108,113 +111,7 @@ static int armada_fbdev_create(struct drm_fb_helper *fbh,
return 0;
- err_fballoc:
+err_fballoc:
dfb->fb.funcs->destroy(&dfb->fb);
return ret;
}
-
-static int armada_fb_probe(struct drm_fb_helper *fbh,
- struct drm_fb_helper_surface_size *sizes)
-{
- int ret = 0;
-
- if (!fbh->fb) {
- ret = armada_fbdev_create(fbh, sizes);
- if (ret == 0)
- ret = 1;
- }
- return ret;
-}
-
-static const struct drm_fb_helper_funcs armada_fb_helper_funcs = {
- .fb_probe = armada_fb_probe,
-};
-
-/*
- * Fbdev client and struct drm_client_funcs
- */
-
-static void armada_fbdev_client_unregister(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fbh = drm_fb_helper_from_client(client);
-
- if (fbh->info) {
- drm_fb_helper_unregister_info(fbh);
- } else {
- drm_client_release(&fbh->client);
- drm_fb_helper_unprepare(fbh);
- kfree(fbh);
- }
-}
-
-static int armada_fbdev_client_restore(struct drm_client_dev *client)
-{
- drm_fb_helper_lastclose(client->dev);
-
- return 0;
-}
-
-static int armada_fbdev_client_hotplug(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fbh = drm_fb_helper_from_client(client);
- struct drm_device *dev = client->dev;
- int ret;
-
- if (dev->fb_helper)
- return drm_fb_helper_hotplug_event(dev->fb_helper);
-
- ret = drm_fb_helper_init(dev, fbh);
- if (ret)
- goto err_drm_err;
-
- if (!drm_drv_uses_atomic_modeset(dev))
- drm_helper_disable_unused_functions(dev);
-
- ret = drm_fb_helper_initial_config(fbh);
- if (ret)
- goto err_drm_fb_helper_fini;
-
- return 0;
-
-err_drm_fb_helper_fini:
- drm_fb_helper_fini(fbh);
-err_drm_err:
- drm_err(dev, "armada: Failed to setup fbdev emulation (ret=%d)\n", ret);
- return ret;
-}
-
-static const struct drm_client_funcs armada_fbdev_client_funcs = {
- .owner = THIS_MODULE,
- .unregister = armada_fbdev_client_unregister,
- .restore = armada_fbdev_client_restore,
- .hotplug = armada_fbdev_client_hotplug,
-};
-
-void armada_fbdev_setup(struct drm_device *dev)
-{
- struct drm_fb_helper *fbh;
- int ret;
-
- drm_WARN(dev, !dev->registered, "Device has not been registered.\n");
- drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n");
-
- fbh = kzalloc(sizeof(*fbh), GFP_KERNEL);
- if (!fbh)
- return;
- drm_fb_helper_prepare(dev, fbh, 32, &armada_fb_helper_funcs);
-
- ret = drm_client_init(dev, &fbh->client, "fbdev", &armada_fbdev_client_funcs);
- if (ret) {
- drm_err(dev, "Failed to register client: %d\n", ret);
- goto err_drm_client_init;
- }
-
- drm_client_register(&fbh->client);
-
- return;
-
-err_drm_client_init:
- drm_fb_helper_unprepare(fbh);
- kfree(fbh);
- return;
-}
--
2.46.0
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