[PATCH v2 75/86] drm/exynos-drm: Run DRM default client setup
Thomas Zimmermann
tzimmermann at suse.de
Wed Aug 21 13:00:12 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 exynos-drm 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: Inki Dae <inki.dae at samsung.com>
Cc: Seung-Woo Kim <sw0312.kim at samsung.com>
Cc: Kyungmin Park <kyungmin.park at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_drv.c | 4 +-
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 101 ++--------------------
drivers/gpu/drm/exynos/exynos_drm_fbdev.h | 15 ++--
3 files changed, 19 insertions(+), 101 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 7c59e1164a48..2a466d8179f4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -15,6 +15,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_setup.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_fourcc.h>
@@ -111,6 +112,7 @@ static const struct drm_driver exynos_drm_driver = {
.dumb_create = exynos_drm_gem_dumb_create,
.gem_prime_import = exynos_drm_gem_prime_import,
.gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
+ EXYNOS_DRM_FBDEV_DRIVER_OPS,
.ioctls = exynos_ioctls,
.num_ioctls = ARRAY_SIZE(exynos_ioctls),
.fops = &exynos_drm_driver_fops,
@@ -288,7 +290,7 @@ static int exynos_drm_bind(struct device *dev)
if (ret < 0)
goto err_cleanup_poll;
- exynos_drm_fbdev_setup(drm);
+ drm_client_setup(drm, NULL);
return 0;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index a379c8ca435a..73fa7b77d8d0 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -22,9 +22,6 @@
#include "exynos_drm_fb.h"
#include "exynos_drm_fbdev.h"
-#define MAX_CONNECTOR 4
-#define PREFERRED_BPP 32
-
static int exynos_drm_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct drm_fb_helper *helper = info->par;
@@ -87,8 +84,11 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
return 0;
}
-static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
- struct drm_fb_helper_surface_size *sizes)
+static const struct drm_fb_helper_funcs exynos_drm_fbdev_helper_funcs = {
+};
+
+int exynos_drm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
{
struct exynos_drm_gem *exynos_gem;
struct drm_device *dev = helper->dev;
@@ -120,6 +120,7 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
ret = PTR_ERR(helper->fb);
goto err_destroy_gem;
}
+ helper->funcs = &exynos_drm_fbdev_helper_funcs;
ret = exynos_drm_fbdev_update(helper, sizes, exynos_gem);
if (ret < 0)
@@ -134,93 +135,3 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
exynos_drm_gem_destroy(exynos_gem);
return ret;
}
-
-static const struct drm_fb_helper_funcs exynos_drm_fb_helper_funcs = {
- .fb_probe = exynos_drm_fbdev_create,
-};
-
-/*
- * struct drm_client
- */
-
-static void exynos_drm_fbdev_client_unregister(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
-
- if (fb_helper->info) {
- drm_fb_helper_unregister_info(fb_helper);
- } else {
- drm_client_release(&fb_helper->client);
- drm_fb_helper_unprepare(fb_helper);
- kfree(fb_helper);
- }
-}
-
-static int exynos_drm_fbdev_client_restore(struct drm_client_dev *client)
-{
- drm_fb_helper_lastclose(client->dev);
-
- return 0;
-}
-
-static int exynos_drm_fbdev_client_hotplug(struct drm_client_dev *client)
-{
- struct drm_fb_helper *fb_helper = 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, fb_helper);
- 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(fb_helper);
- if (ret)
- goto err_drm_fb_helper_fini;
-
- return 0;
-
-err_drm_fb_helper_fini:
- drm_fb_helper_fini(fb_helper);
-err_drm_err:
- drm_err(dev, "Failed to setup fbdev emulation (ret=%d)\n", ret);
- return ret;
-}
-
-static const struct drm_client_funcs exynos_drm_fbdev_client_funcs = {
- .owner = THIS_MODULE,
- .unregister = exynos_drm_fbdev_client_unregister,
- .restore = exynos_drm_fbdev_client_restore,
- .hotplug = exynos_drm_fbdev_client_hotplug,
-};
-
-void exynos_drm_fbdev_setup(struct drm_device *dev)
-{
- struct drm_fb_helper *fb_helper;
- 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");
-
- fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
- if (!fb_helper)
- return;
- drm_fb_helper_prepare(dev, fb_helper, PREFERRED_BPP, &exynos_drm_fb_helper_funcs);
-
- ret = drm_client_init(dev, &fb_helper->client, "fbdev", &exynos_drm_fbdev_client_funcs);
- if (ret)
- goto err_drm_client_init;
-
- drm_client_register(&fb_helper->client);
-
- return;
-
-err_drm_client_init:
- drm_fb_helper_unprepare(fb_helper);
- kfree(fb_helper);
-}
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
index 1e1dea627cd9..02a9201abea3 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
@@ -11,12 +11,17 @@
#ifndef _EXYNOS_DRM_FBDEV_H_
#define _EXYNOS_DRM_FBDEV_H_
-#ifdef CONFIG_DRM_FBDEV_EMULATION
-void exynos_drm_fbdev_setup(struct drm_device *dev);
+struct drm_fb_helper;
+struct drm_fb_helper_surface_size;
+
+#if defined(CONFIG_DRM_FBDEV_EMULATION)
+int exynos_drm_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,
+ struct drm_fb_helper_surface_size *sizes);
+#define EXYNOS_DRM_FBDEV_DRIVER_OPS \
+ .fbdev_probe = exynos_drm_fbdev_driver_fbdev_probe
#else
-static inline void exynos_drm_fbdev_setup(struct drm_device *dev)
-{
-}
+#define EXYNOS_DRM_FBDEV_DRIVER_OPS \
+ .fbdev_probe = NULL
#endif
#endif
--
2.46.0
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