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drm/i915/display: Remove struct drm_fb_helper from struct intel_fbdev

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Store instances of drm_fb_helper and struct intel_fbdev separately.
This will allow i915 to use the common fbdev client, which allocates
its own instance of struct drm_fb_helper.

There is at most one instance of type each per DRM device, so both can
be referenced directly from the i915 and DRM device structures. A later
patchset might rework the common fbdev client to allow for storing
both, drm_fb_helper and intel_fbdev, together in the same place.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241212170913.185939-9-tzimmermann@suse.de
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
This commit is contained in:
Thomas Zimmermann
2024-12-12 18:08:49 +01:00
committed by Maarten Lankhorst
parent 03e1b3df21
commit 04a1c47798
1 changed files with 28 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/i915/display/intel_fbdev.c
View File

@@ -43,6 +43,7 @@
#include <drm/drm_fourcc.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_managed.h>
#include <drm/drm_print.h>
#include "i915_drv.h"
@@ -56,7 +57,6 @@
#include "intel_frontbuffer.h"
struct intel_fbdev {
struct drm_fb_helper helper;
struct intel_framebuffer *fb;
struct i915_vma *vma;
unsigned long vma_flags;
@@ -64,7 +64,9 @@ struct intel_fbdev {
static struct intel_fbdev *to_intel_fbdev(struct drm_fb_helper *fb_helper)
{
return container_of(fb_helper, struct intel_fbdev, helper);
struct drm_i915_private *i915 = to_i915(fb_helper->client.dev);
return i915->display.fbdev.fbdev;
}
static struct intel_frontbuffer *to_frontbuffer(struct intel_fbdev *ifbdev)
@@ -120,8 +122,8 @@ static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct intel_fbdev *fbdev = to_intel_fbdev(info->par);
struct drm_gem_object *obj = drm_gem_fb_get_obj(&fbdev->fb->base, 0);
struct drm_fb_helper *fb_helper = info->par;
struct drm_gem_object *obj = drm_gem_fb_get_obj(fb_helper->fb, 0);
return intel_bo_fb_mmap(obj, vma);
}
@@ -129,9 +131,9 @@ static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma)
static void intel_fbdev_fb_destroy(struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper);
struct intel_fbdev *ifbdev = to_intel_fbdev(fb_helper);
drm_fb_helper_fini(&ifbdev->helper);
drm_fb_helper_fini(fb_helper);
/*
* We rely on the object-free to release the VMA pinning for
@@ -139,11 +141,11 @@ static void intel_fbdev_fb_destroy(struct fb_info *info)
* trying to rectify all the possible error paths leading here.
*/
intel_fb_unpin_vma(ifbdev->vma, ifbdev->vma_flags);
drm_framebuffer_remove(&ifbdev->fb->base);
drm_framebuffer_remove(fb_helper->fb);
drm_client_release(&fb_helper->client);
drm_fb_helper_unprepare(&ifbdev->helper);
kfree(ifbdev);
drm_fb_helper_unprepare(fb_helper);
kfree(fb_helper);
}
__diag_push();
@@ -227,7 +229,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
goto out_unpin;
}
ifbdev->helper.fb = &fb->base;
helper->fb = &fb->base;
info->fbops = &intelfb_ops;
@@ -237,7 +239,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
if (ret)
goto out_unpin;
drm_fb_helper_fill_info(info, &ifbdev->helper, sizes);
drm_fb_helper_fill_info(info, dev->fb_helper, sizes);
/* If the object is shmemfs backed, it will have given us zeroed pages.
* If the object is stolen however, it will be full of whatever
@@ -528,13 +530,14 @@ void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous
}
}
drm_fb_helper_set_suspend(&ifbdev->helper, state);
drm_fb_helper_set_suspend(dev->fb_helper, state);
console_unlock();
}
static int intel_fbdev_restore_mode(struct drm_i915_private *dev_priv)
{
struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev;
struct drm_device *dev = &dev_priv->drm;
int ret;
if (!ifbdev)
@@ -543,7 +546,7 @@ static int intel_fbdev_restore_mode(struct drm_i915_private *dev_priv)
if (!ifbdev->vma)
return -ENOMEM;
ret = drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev->helper);
ret = drm_fb_helper_restore_fbdev_mode_unlocked(dev->fb_helper);
if (ret)
return ret;
@@ -640,13 +643,14 @@ void intel_fbdev_setup(struct drm_i915_private *i915)
{
struct drm_device *dev = &i915->drm;
struct intel_fbdev *ifbdev;
struct drm_fb_helper *fb_helper;
unsigned int preferred_bpp = 0;
int ret;
if (!HAS_DISPLAY(i915))
return;
ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL);
ifbdev = drmm_kzalloc(dev, sizeof(*ifbdev), GFP_KERNEL);
if (!ifbdev)
return;
@@ -657,30 +661,33 @@ void intel_fbdev_setup(struct drm_i915_private *i915)
if (!preferred_bpp)
preferred_bpp = 32;
drm_fb_helper_prepare(dev, &ifbdev->helper, preferred_bpp, &intel_fb_helper_funcs);
fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
if (!fb_helper)
return;
drm_fb_helper_prepare(dev, fb_helper, preferred_bpp, &intel_fb_helper_funcs);
ret = drm_client_init(dev, &ifbdev->helper.client, "intel-fbdev",
ret = drm_client_init(dev, &fb_helper->client, "intel-fbdev",
&intel_fbdev_client_funcs);
if (ret) {
drm_err(dev, "Failed to register client: %d\n", ret);
goto err_drm_fb_helper_unprepare;
}
drm_client_register(&ifbdev->helper.client);
drm_client_register(&fb_helper->client);
return;
err_drm_fb_helper_unprepare:
drm_fb_helper_unprepare(&ifbdev->helper);
kfree(ifbdev);
drm_fb_helper_unprepare(dev->fb_helper);
kfree(fb_helper);
}
struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev)
{
if (!fbdev || !fbdev->helper.fb)
if (!fbdev)
return NULL;
return to_intel_framebuffer(fbdev->helper.fb);
return fbdev->fb;
}
struct i915_vma *intel_fbdev_vma_pointer(struct intel_fbdev *fbdev)