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drm/fbdev-dma: Remove obsolete setup function

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The old setup function drm_fbdev_dma_setup() is unused. Remove it and
its internal callbacks. New drivers should call drm_client_setup()
instead.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-49-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2024-09-24 09:12:46 +02:00
parent c08810e97a
commit 731fddf430
2 changed files with 1 additions and 126 deletions
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120
drivers/gpu/drm/drm_fbdev_dma.c
View File

@ -2,15 +2,13 @@
#include <linux/fb.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_fb_dma_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_fbdev_dma.h>
/*
* struct fb_ops
*/
@ -102,12 +100,6 @@ static const struct fb_ops drm_fbdev_dma_deferred_fb_ops = {
* struct drm_fb_helper
*/
static int drm_fbdev_dma_helper_fb_probe(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_surface_size *sizes)
{
return drm_fbdev_dma_driver_fbdev_probe(fb_helper, sizes);
}
static int drm_fbdev_dma_helper_fb_dirty(struct drm_fb_helper *helper,
struct drm_clip_rect *clip)
{
@ -128,7 +120,6 @@ static int drm_fbdev_dma_helper_fb_dirty(struct drm_fb_helper *helper,
}
static const struct drm_fb_helper_funcs drm_fbdev_dma_helper_funcs = {
.fb_probe = drm_fbdev_dma_helper_fb_probe,
.fb_dirty = drm_fbdev_dma_helper_fb_dirty,
};
@ -246,112 +237,3 @@ int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
return ret;
}
EXPORT_SYMBOL(drm_fbdev_dma_driver_fbdev_probe);
/*
* struct drm_client_funcs
*/
static void drm_fbdev_dma_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 drm_fbdev_dma_client_restore(struct drm_client_dev *client)
{
drm_fb_helper_lastclose(client->dev);
return 0;
}
static int drm_fbdev_dma_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, "fbdev-dma: Failed to setup generic emulation (ret=%d)\n", ret);
return ret;
}
static const struct drm_client_funcs drm_fbdev_dma_client_funcs = {
.owner = THIS_MODULE,
.unregister = drm_fbdev_dma_client_unregister,
.restore = drm_fbdev_dma_client_restore,
.hotplug = drm_fbdev_dma_client_hotplug,
};
/**
* drm_fbdev_dma_setup() - Setup fbdev emulation for GEM DMA helpers
* @dev: DRM device
* @preferred_bpp: Preferred bits per pixel for the device.
* 32 is used if this is zero.
*
* This function sets up fbdev emulation for GEM DMA drivers that support
* dumb buffers with a virtual address and that can be mmap'ed.
* drm_fbdev_dma_setup() shall be called after the DRM driver registered
* the new DRM device with drm_dev_register().
*
* Restore, hotplug events and teardown are all taken care of. Drivers that do
* suspend/resume need to call drm_fb_helper_set_suspend_unlocked() themselves.
* Simple drivers might use drm_mode_config_helper_suspend().
*
* This function is safe to call even when there are no connectors present.
* Setup will be retried on the next hotplug event.
*
* The fbdev is destroyed by drm_dev_unregister().
*/
void drm_fbdev_dma_setup(struct drm_device *dev, unsigned int preferred_bpp)
{
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, &drm_fbdev_dma_helper_funcs);
ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_dma_client_funcs);
if (ret) {
drm_err(dev, "Failed to register client: %d\n", 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);
}
EXPORT_SYMBOL(drm_fbdev_dma_setup);

7
include/drm/drm_fbdev_dma.h
View File

@ -3,7 +3,6 @@
#ifndef DRM_FBDEV_DMA_H
#define DRM_FBDEV_DMA_H
struct drm_device;
struct drm_fb_helper;
struct drm_fb_helper_surface_size;
@ -13,15 +12,9 @@ int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
#define DRM_FBDEV_DMA_DRIVER_OPS \
.fbdev_probe = drm_fbdev_dma_driver_fbdev_probe
void drm_fbdev_dma_setup(struct drm_device *dev, unsigned int preferred_bpp);
#else
static inline void drm_fbdev_dma_setup(struct drm_device *dev, unsigned int preferred_bpp)
{ }
#define DRM_FBDEV_DMA_DRIVER_OPS \
.fbdev_probe = NULL
#endif
#endif