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drm/cma-helper: Remove unused fbdev code 

CMA helper drivers have been converted to drm_fbdev_generic_setup()
so the fbdev code can be removed.

v3: Remove CMA specific conditional in the generic fbdev client

v2: Clean up the includes some more (Laurent)

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190114121059.20704-1-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes 2019-01-14 13:10:59 +01:00
parent 3725cd0957
commit 2de304b44d
4 changed files with 4 additions and 171 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/Kconfig
View File

@ -170,10 +170,6 @@ config DRM_KMS_CMA_HELPER
bool
depends on DRM
select DRM_GEM_CMA_HELPER
select DRM_KMS_FB_HELPER
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
help
Choose this if you need the KMS CMA helper functions

137
drivers/gpu/drm/drm_fb_cma_helper.c
View File

@ -17,20 +17,13 @@
* GNU General Public License for more details.
*/
#include <drm/drmP.h>
#include <drm/drm_client.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_plane.h>
#include <linux/module.h>
struct drm_fbdev_cma {
struct drm_fb_helper fb_helper;
};
/**
* DOC: framebuffer cma helper functions
*
@ -39,16 +32,8 @@ struct drm_fbdev_cma {
*
* drm_gem_fb_create() is used in the &drm_mode_config_funcs.fb_create
* callback function to create a cma backed framebuffer.
*
* An fbdev framebuffer backed by cma is also available by calling
* drm_fb_cma_fbdev_init(). drm_fb_cma_fbdev_fini() tears it down.
*/
static inline struct drm_fbdev_cma *to_fbdev_cma(struct drm_fb_helper *helper)
{
return container_of(helper, struct drm_fbdev_cma, fb_helper);
}
/**
* drm_fb_cma_get_gem_obj() - Get CMA GEM object for framebuffer
* @fb: The framebuffer
@ -119,121 +104,3 @@ dma_addr_t drm_fb_cma_get_gem_addr(struct drm_framebuffer *fb,
return paddr;
}
EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_addr);
/**
* drm_fb_cma_fbdev_init() - Allocate and initialize fbdev emulation
* @dev: DRM device
* @preferred_bpp: Preferred bits per pixel for the device.
* @dev->mode_config.preferred_depth is used if this is zero.
* @max_conn_count: Maximum number of connectors.
* @dev->mode_config.num_connector is used if this is zero.
*
* Returns:
* Zero on success or negative error code on failure.
*/
int drm_fb_cma_fbdev_init(struct drm_device *dev, unsigned int preferred_bpp,
unsigned int max_conn_count)
{
struct drm_fbdev_cma *fbdev_cma;
/* dev->fb_helper will indirectly point to fbdev_cma after this call */
fbdev_cma = drm_fbdev_cma_init(dev, preferred_bpp, max_conn_count);
return PTR_ERR_OR_ZERO(fbdev_cma);
}
EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_init);
/**
* drm_fb_cma_fbdev_fini() - Teardown fbdev emulation
* @dev: DRM device
*/
void drm_fb_cma_fbdev_fini(struct drm_device *dev)
{
if (dev->fb_helper)
drm_fbdev_cma_fini(to_fbdev_cma(dev->fb_helper));
}
EXPORT_SYMBOL_GPL(drm_fb_cma_fbdev_fini);
static const struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = {
.fb_probe = drm_fb_helper_generic_probe,
};
/**
* 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)
{
struct drm_fbdev_cma *fbdev_cma;
struct drm_fb_helper *fb_helper;
int ret;
fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL);
if (!fbdev_cma)
return ERR_PTR(-ENOMEM);
fb_helper = &fbdev_cma->fb_helper;
ret = drm_client_init(dev, &fb_helper->client, "fbdev", NULL);
if (ret)
goto err_free;
ret = drm_fb_helper_fbdev_setup(dev, fb_helper, &drm_fb_cma_helper_funcs,
preferred_bpp, max_conn_count);
if (ret)
goto err_client_put;
drm_client_add(&fb_helper->client);
return fbdev_cma;
err_client_put:
drm_client_release(&fb_helper->client);
err_free:
kfree(fbdev_cma);
return ERR_PTR(ret);
}
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);
/* All resources have now been freed by drm_fbdev_fb_destroy() */
}
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);

12
drivers/gpu/drm/drm_fb_helper.c
View File

@ -3042,16 +3042,8 @@ static void drm_fbdev_cleanup(struct drm_fb_helper *fb_helper)
static void drm_fbdev_release(struct drm_fb_helper *fb_helper)
{
drm_fbdev_cleanup(fb_helper);
/*
* FIXME:
* Remove conditional when all CMA drivers have been moved over to using
* drm_fbdev_generic_setup().
*/
if (fb_helper->client.funcs) {
drm_client_release(&fb_helper->client);
kfree(fb_helper);
}
drm_client_release(&fb_helper->client);
kfree(fb_helper);
}
/*

22
include/drm/drm_fb_cma_helper.h
View File

@ -2,31 +2,9 @@
#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_plane_state;
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(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);
struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
unsigned int plane);